This commit is contained in:
iceman1001 2024-09-30 10:36:29 +02:00
parent c3591b9692
commit 71c86f4b21
68 changed files with 18942 additions and 18745 deletions

View file

@ -41,18 +41,18 @@
static struct hitagS_tag tag = {
.data.pages = {
// Plain mode: | Authentication mode:
[0] = {0x5F, 0xC2, 0x11, 0x84}, // UID | UID
// HITAG S 2048
[1] = {0xCA, 0x00, 0x00, 0xAA}, // CON0 CON1 CON2 Reserved | CON0 CON1 CON2 PWDH0
[2] = {0x48, 0x54, 0x4F, 0x4E}, // Data | PWDL0 PWDL1 KEYH0 KEYH1
[3] = {0x4D, 0x49, 0x4B, 0x52}, // Data | KEYL0 KEYL1 KEYL2 KEYL3
[4] = {0xFF, 0x80, 0x00, 0x00}, // Data
[5] = {0x00, 0x00, 0x00, 0x00}, // Data
[6] = {0x00, 0x00, 0x00, 0x00}, // Data
[7] = {0x57, 0x5F, 0x4F, 0x48}, // Data
// up to index 63 for HITAG S2048 public data
},
// Plain mode: | Authentication mode:
[0] = {0x5F, 0xC2, 0x11, 0x84}, // UID | UID
// HITAG S 2048
[1] = {0xCA, 0x00, 0x00, 0xAA}, // CON0 CON1 CON2 Reserved | CON0 CON1 CON2 PWDH0
[2] = {0x48, 0x54, 0x4F, 0x4E}, // Data | PWDL0 PWDL1 KEYH0 KEYH1
[3] = {0x4D, 0x49, 0x4B, 0x52}, // Data | KEYL0 KEYL1 KEYL2 KEYL3
[4] = {0xFF, 0x80, 0x00, 0x00}, // Data
[5] = {0x00, 0x00, 0x00, 0x00}, // Data
[6] = {0x00, 0x00, 0x00, 0x00}, // Data
[7] = {0x57, 0x5F, 0x4F, 0x48}, // Data
// up to index 63 for HITAG S2048 public data
},
};
static uint8_t page_to_be_written = 0;
static int block_data_left = 0;
@ -1157,7 +1157,7 @@ static int hts_select_tag(const lf_hitag_data_t *packet, uint8_t *tx, size_t siz
key_le = *(uint64_t *)packet->key;
uint64_t state = ht2_hitag2_init(reflect48(key_le), reflect32(tag.data.s.uid_le), reflect32(*(uint32_t*)rnd));
uint64_t state = ht2_hitag2_init(reflect48(key_le), reflect32(tag.data.s.uid_le), reflect32(*(uint32_t *)rnd));
uint8_t auth_ks[4];
for (int i = 0; i < 4; i++) {

View file

@ -1257,7 +1257,7 @@ bool SimulateIso14443aInit(uint8_t tagType, uint16_t flags, uint8_t *data, uint8
// copy the iRATs if supplied
if ((flags & RATS_IN_DATA) == RATS_IN_DATA) {
memcpy(rRATS ,iRATs, sizeof(iRATs));
memcpy(rRATS, iRATs, sizeof(iRATs));
// rats len is dictated by the first char of the string, add 2 crc bytes
rRATS_len = (iRATs[0] + 2);
}
@ -3934,11 +3934,11 @@ void SimulateIso14443aTagAID(uint8_t tagType, uint16_t flags, uint8_t *data, uin
BigBuf_free_keep_EM();
// Increased the buffer size to allow for more complex responses
#define DYNAMIC_RESPONSE_BUFFER2_SIZE 512
#define DYNAMIC_MODULATION_BUFFER2_SIZE 1536
#define DYNAMIC_RESPONSE_BUFFER2_SIZE 512
#define DYNAMIC_MODULATION_BUFFER2_SIZE 1536
uint8_t * dynamic_response_buffer2 = BigBuf_calloc(DYNAMIC_RESPONSE_BUFFER2_SIZE);
uint8_t * dynamic_modulation_buffer2 = BigBuf_calloc(DYNAMIC_MODULATION_BUFFER2_SIZE);
uint8_t *dynamic_response_buffer2 = BigBuf_calloc(DYNAMIC_RESPONSE_BUFFER2_SIZE);
uint8_t *dynamic_modulation_buffer2 = BigBuf_calloc(DYNAMIC_MODULATION_BUFFER2_SIZE);
tag_response_info_t dynamic_response_info = {
.response = dynamic_response_buffer2,
.response_n = 0,
@ -4024,104 +4024,104 @@ void SimulateIso14443aTagAID(uint8_t tagType, uint16_t flags, uint8_t *data, uin
p_response = NULL;
finished = true;
} else if (receivedCmd[0] == ISO14443A_CMD_RATS && len == 4) { // Received a RATS request
p_response = &responses[RESP_INDEX_RATS];
p_response = &responses[RESP_INDEX_RATS];
} else {
// clear old dynamic responses
dynamic_response_info.response_n = 0;
dynamic_response_info.modulation_n = 0;
// Check for ISO 14443A-4 compliant commands, look at left nibble
switch (receivedCmd[0]) {
case 0x0B:
case 0x0A: { // IBlock (command CID)
dynamic_response_info.response[0] = receivedCmd[0];
dynamic_response_info.response[1] = 0x00;
// Check for ISO 14443A-4 compliant commands, look at left nibble
switch (receivedCmd[0]) {
case 0x0B:
case 0x0A: { // IBlock (command CID)
dynamic_response_info.response[0] = receivedCmd[0];
dynamic_response_info.response[1] = 0x00;
switch (receivedCmd[3]) { // APDU Class Byte
// receivedCmd in this case is expecting to structured with a CID, then the APDU command for SelectFile
// | IBlock (CID) | CID | APDU Command | CRC |
switch (receivedCmd[3]) { // APDU Class Byte
// receivedCmd in this case is expecting to structured with a CID, then the APDU command for SelectFile
// | IBlock (CID) | CID | APDU Command | CRC |
case 0xA4: { // SELECT FILE
// Select File AID uses the following format for GlobalPlatform
//
// | 00 | A4 | 04 | 00 | xx | AID | 00 |
// xx in this case is len of the AID value in hex
case 0xA4: { // SELECT FILE
// Select File AID uses the following format for GlobalPlatform
//
// | 00 | A4 | 04 | 00 | xx | AID | 00 |
// xx in this case is len of the AID value in hex
// aid len is found as a hex value in receivedCmd[6] (Index Starts at 0)
int aid_len = receivedCmd[6];
uint8_t* recieved_aid = &receivedCmd[7];
// aid len is found as a hex value in receivedCmd[6] (Index Starts at 0)
int aid_len = receivedCmd[6];
uint8_t *recieved_aid = &receivedCmd[7];
// aid enumeration flag
if (enumerate == true) {
Dbprintf("Received AID (%d):", aid_len);
Dbhexdump(aid_len, recieved_aid, false);
}
if (memcmp(aidFilter, recieved_aid, aid_len) == 0) { // Evaluate the AID sent by the Reader to the AID supplied
// AID Response will be parsed here
memcpy(dynamic_response_info.response + 2 , aidResponse, respondLen + 2);
dynamic_response_info.response_n = respondLen + 2;
} else { // Any other SELECT FILE command will return with a Not Found
dynamic_response_info.response[2] = 0x6A;
dynamic_response_info.response[3] = 0x82;
dynamic_response_info.response_n = 4;
}
// aid enumeration flag
if (enumerate == true) {
Dbprintf("Received AID (%d):", aid_len);
Dbhexdump(aid_len, recieved_aid, false);
}
break;
case 0xDA: { // PUT DATA
// Just send them a 90 00 response
dynamic_response_info.response[2] = 0x90;
dynamic_response_info.response[3] = 0x00;
dynamic_response_info.response_n = 4;
}
break;
case 0xCA: { // GET DATA
if (sentCount == 0) {
// APDU Command will just be parsed here
memcpy(dynamic_response_info.response + 2 , apduCommand, apduLen + 2);
dynamic_response_info.response_n = respondLen + 2;
} else {
finished = true;
break;
}
sentCount++;
}
break;
default : {
// Any other non-listed command
// Respond Not Found
if (memcmp(aidFilter, recieved_aid, aid_len) == 0) { // Evaluate the AID sent by the Reader to the AID supplied
// AID Response will be parsed here
memcpy(dynamic_response_info.response + 2, aidResponse, respondLen + 2);
dynamic_response_info.response_n = respondLen + 2;
} else { // Any other SELECT FILE command will return with a Not Found
dynamic_response_info.response[2] = 0x6A;
dynamic_response_info.response[3] = 0x82;
dynamic_response_info.response_n = 4;
}
}
break;
}
break;
break;
case 0xCA:
case 0xC2: { // Readers sends deselect command
dynamic_response_info.response[0] = 0xCA;
dynamic_response_info.response[1] = 0x00;
dynamic_response_info.response_n = 2;
finished = true;
}
break;
default: {
// Never seen this command before
LogTrace(receivedCmd, Uart.len, Uart.startTime * 16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime * 16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true);
if (g_dbglevel >= DBG_DEBUG) {
Dbprintf("Received unknown command (len=%d):", len);
Dbhexdump(len, receivedCmd, false);
case 0xDA: { // PUT DATA
// Just send them a 90 00 response
dynamic_response_info.response[2] = 0x90;
dynamic_response_info.response[3] = 0x00;
dynamic_response_info.response_n = 4;
}
break;
case 0xCA: { // GET DATA
if (sentCount == 0) {
// APDU Command will just be parsed here
memcpy(dynamic_response_info.response + 2, apduCommand, apduLen + 2);
dynamic_response_info.response_n = respondLen + 2;
} else {
finished = true;
break;
}
sentCount++;
}
break;
default : {
// Any other non-listed command
// Respond Not Found
dynamic_response_info.response[2] = 0x6A;
dynamic_response_info.response[3] = 0x82;
dynamic_response_info.response_n = 4;
}
// Do not respond
dynamic_response_info.response_n = 0;
}
break;
}
break;
case 0xCA:
case 0xC2: { // Readers sends deselect command
dynamic_response_info.response[0] = 0xCA;
dynamic_response_info.response[1] = 0x00;
dynamic_response_info.response_n = 2;
finished = true;
}
break;
default: {
// Never seen this command before
LogTrace(receivedCmd, Uart.len, Uart.startTime * 16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime * 16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true);
if (g_dbglevel >= DBG_DEBUG) {
Dbprintf("Received unknown command (len=%d):", len);
Dbhexdump(len, receivedCmd, false);
}
// Do not respond
dynamic_response_info.response_n = 0;
}
break;
}
if (dynamic_response_info.response_n > 0) {
// Copy the CID from the reader query

File diff suppressed because it is too large Load diff

File diff suppressed because it is too large Load diff

View file

@ -36,86 +36,86 @@ typedef struct luaL_Buffer luaL_Buffer;
typedef struct luaL_Reg {
const char *name;
lua_CFunction func;
const char *name;
lua_CFunction func;
} luaL_Reg;
#define LUAL_NUMSIZES (sizeof(lua_Integer)*16 + sizeof(lua_Number))
LUALIB_API void (luaL_checkversion_) (lua_State *L, lua_Number ver, size_t sz);
LUALIB_API void (luaL_checkversion_)(lua_State *L, lua_Number ver, size_t sz);
#define luaL_checkversion(L) \
luaL_checkversion_(L, LUA_VERSION_NUM, LUAL_NUMSIZES)
LUALIB_API int (luaL_getmetafield) (lua_State *L, int obj, const char *e);
LUALIB_API int (luaL_callmeta) (lua_State *L, int obj, const char *e);
LUALIB_API const char *(luaL_tolstring) (lua_State *L, int idx, size_t *len);
LUALIB_API int (luaL_argerror) (lua_State *L, int arg, const char *extramsg);
LUALIB_API int (luaL_typeerror) (lua_State *L, int arg, const char *tname);
LUALIB_API const char *(luaL_checklstring) (lua_State *L, int arg,
size_t *l);
LUALIB_API const char *(luaL_optlstring) (lua_State *L, int arg,
const char *def, size_t *l);
LUALIB_API lua_Number (luaL_checknumber) (lua_State *L, int arg);
LUALIB_API lua_Number (luaL_optnumber) (lua_State *L, int arg, lua_Number def);
LUALIB_API int (luaL_getmetafield)(lua_State *L, int obj, const char *e);
LUALIB_API int (luaL_callmeta)(lua_State *L, int obj, const char *e);
LUALIB_API const char *(luaL_tolstring)(lua_State *L, int idx, size_t *len);
LUALIB_API int (luaL_argerror)(lua_State *L, int arg, const char *extramsg);
LUALIB_API int (luaL_typeerror)(lua_State *L, int arg, const char *tname);
LUALIB_API const char *(luaL_checklstring)(lua_State *L, int arg,
size_t *l);
LUALIB_API const char *(luaL_optlstring)(lua_State *L, int arg,
const char *def, size_t *l);
LUALIB_API lua_Number(luaL_checknumber)(lua_State *L, int arg);
LUALIB_API lua_Number(luaL_optnumber)(lua_State *L, int arg, lua_Number def);
LUALIB_API lua_Integer (luaL_checkinteger) (lua_State *L, int arg);
LUALIB_API lua_Integer (luaL_optinteger) (lua_State *L, int arg,
lua_Integer def);
LUALIB_API lua_Integer(luaL_checkinteger)(lua_State *L, int arg);
LUALIB_API lua_Integer(luaL_optinteger)(lua_State *L, int arg,
lua_Integer def);
LUALIB_API void (luaL_checkstack) (lua_State *L, int sz, const char *msg);
LUALIB_API void (luaL_checktype) (lua_State *L, int arg, int t);
LUALIB_API void (luaL_checkany) (lua_State *L, int arg);
LUALIB_API void (luaL_checkstack)(lua_State *L, int sz, const char *msg);
LUALIB_API void (luaL_checktype)(lua_State *L, int arg, int t);
LUALIB_API void (luaL_checkany)(lua_State *L, int arg);
LUALIB_API int (luaL_newmetatable) (lua_State *L, const char *tname);
LUALIB_API void (luaL_setmetatable) (lua_State *L, const char *tname);
LUALIB_API void *(luaL_testudata) (lua_State *L, int ud, const char *tname);
LUALIB_API void *(luaL_checkudata) (lua_State *L, int ud, const char *tname);
LUALIB_API int (luaL_newmetatable)(lua_State *L, const char *tname);
LUALIB_API void (luaL_setmetatable)(lua_State *L, const char *tname);
LUALIB_API void *(luaL_testudata)(lua_State *L, int ud, const char *tname);
LUALIB_API void *(luaL_checkudata)(lua_State *L, int ud, const char *tname);
LUALIB_API void (luaL_where) (lua_State *L, int lvl);
LUALIB_API int (luaL_error) (lua_State *L, const char *fmt, ...);
LUALIB_API void (luaL_where)(lua_State *L, int lvl);
LUALIB_API int (luaL_error)(lua_State *L, const char *fmt, ...);
LUALIB_API int (luaL_checkoption) (lua_State *L, int arg, const char *def,
const char *const lst[]);
LUALIB_API int (luaL_checkoption)(lua_State *L, int arg, const char *def,
const char *const lst[]);
LUALIB_API int (luaL_fileresult) (lua_State *L, int stat, const char *fname);
LUALIB_API int (luaL_execresult) (lua_State *L, int stat);
LUALIB_API int (luaL_fileresult)(lua_State *L, int stat, const char *fname);
LUALIB_API int (luaL_execresult)(lua_State *L, int stat);
/* predefined references */
#define LUA_NOREF (-2)
#define LUA_REFNIL (-1)
LUALIB_API int (luaL_ref) (lua_State *L, int t);
LUALIB_API void (luaL_unref) (lua_State *L, int t, int ref);
LUALIB_API int (luaL_ref)(lua_State *L, int t);
LUALIB_API void (luaL_unref)(lua_State *L, int t, int ref);
LUALIB_API int (luaL_loadfilex) (lua_State *L, const char *filename,
const char *mode);
LUALIB_API int (luaL_loadfilex)(lua_State *L, const char *filename,
const char *mode);
#define luaL_loadfile(L,f) luaL_loadfilex(L,f,NULL)
LUALIB_API int (luaL_loadbufferx) (lua_State *L, const char *buff, size_t sz,
const char *name, const char *mode);
LUALIB_API int (luaL_loadstring) (lua_State *L, const char *s);
LUALIB_API int (luaL_loadbufferx)(lua_State *L, const char *buff, size_t sz,
const char *name, const char *mode);
LUALIB_API int (luaL_loadstring)(lua_State *L, const char *s);
LUALIB_API lua_State *(luaL_newstate) (void);
LUALIB_API lua_State *(luaL_newstate)(void);
LUALIB_API lua_Integer (luaL_len) (lua_State *L, int idx);
LUALIB_API lua_Integer(luaL_len)(lua_State *L, int idx);
LUALIB_API void (luaL_addgsub) (luaL_Buffer *b, const char *s,
const char *p, const char *r);
LUALIB_API const char *(luaL_gsub) (lua_State *L, const char *s,
const char *p, const char *r);
LUALIB_API void (luaL_addgsub)(luaL_Buffer *b, const char *s,
const char *p, const char *r);
LUALIB_API const char *(luaL_gsub)(lua_State *L, const char *s,
const char *p, const char *r);
LUALIB_API void (luaL_setfuncs) (lua_State *L, const luaL_Reg *l, int nup);
LUALIB_API void (luaL_setfuncs)(lua_State *L, const luaL_Reg *l, int nup);
LUALIB_API int (luaL_getsubtable) (lua_State *L, int idx, const char *fname);
LUALIB_API int (luaL_getsubtable)(lua_State *L, int idx, const char *fname);
LUALIB_API void (luaL_traceback) (lua_State *L, lua_State *L1,
const char *msg, int level);
LUALIB_API void (luaL_traceback)(lua_State *L, lua_State *L1,
const char *msg, int level);
LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname,
lua_CFunction openf, int glb);
LUALIB_API void (luaL_requiref)(lua_State *L, const char *modname,
lua_CFunction openf, int glb);
/*
** ===============================================================
@ -172,10 +172,10 @@ LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname,
#if !defined(lua_assert)
#if defined LUAI_ASSERT
#include <assert.h>
#define lua_assert(c) assert(c)
#include <assert.h>
#define lua_assert(c) assert(c)
#else
#define lua_assert(c) ((void)0)
#define lua_assert(c) ((void)0)
#endif
#endif
@ -189,14 +189,14 @@ LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname,
*/
struct luaL_Buffer {
char *b; /* buffer address */
size_t size; /* buffer size */
size_t n; /* number of characters in buffer */
lua_State *L;
union {
LUAI_MAXALIGN; /* ensure maximum alignment for buffer */
char b[LUAL_BUFFERSIZE]; /* initial buffer */
} init;
char *b; /* buffer address */
size_t size; /* buffer size */
size_t n; /* number of characters in buffer */
lua_State *L;
union {
LUAI_MAXALIGN; /* ensure maximum alignment for buffer */
char b[LUAL_BUFFERSIZE]; /* initial buffer */
} init;
};
@ -212,14 +212,14 @@ struct luaL_Buffer {
#define luaL_buffsub(B,s) ((B)->n -= (s))
LUALIB_API void (luaL_buffinit) (lua_State *L, luaL_Buffer *B);
LUALIB_API char *(luaL_prepbuffsize) (luaL_Buffer *B, size_t sz);
LUALIB_API void (luaL_addlstring) (luaL_Buffer *B, const char *s, size_t l);
LUALIB_API void (luaL_addstring) (luaL_Buffer *B, const char *s);
LUALIB_API void (luaL_addvalue) (luaL_Buffer *B);
LUALIB_API void (luaL_pushresult) (luaL_Buffer *B);
LUALIB_API void (luaL_pushresultsize) (luaL_Buffer *B, size_t sz);
LUALIB_API char *(luaL_buffinitsize) (lua_State *L, luaL_Buffer *B, size_t sz);
LUALIB_API void (luaL_buffinit)(lua_State *L, luaL_Buffer *B);
LUALIB_API char *(luaL_prepbuffsize)(luaL_Buffer *B, size_t sz);
LUALIB_API void (luaL_addlstring)(luaL_Buffer *B, const char *s, size_t l);
LUALIB_API void (luaL_addstring)(luaL_Buffer *B, const char *s);
LUALIB_API void (luaL_addvalue)(luaL_Buffer *B);
LUALIB_API void (luaL_pushresult)(luaL_Buffer *B);
LUALIB_API void (luaL_pushresultsize)(luaL_Buffer *B, size_t sz);
LUALIB_API char *(luaL_buffinitsize)(lua_State *L, luaL_Buffer *B, size_t sz);
#define luaL_prepbuffer(B) luaL_prepbuffsize(B, LUAL_BUFFERSIZE)
@ -243,8 +243,8 @@ LUALIB_API char *(luaL_buffinitsize) (lua_State *L, luaL_Buffer *B, size_t sz);
typedef struct luaL_Stream {
FILE *f; /* stream (NULL for incompletely created streams) */
lua_CFunction closef; /* to close stream (NULL for closed streams) */
FILE *f; /* stream (NULL for incompletely created streams) */
lua_CFunction closef; /* to close stream (NULL for closed streams) */
} luaL_Stream;
/* }====================================================== */

View file

@ -21,19 +21,19 @@
#include "lualib.h"
static int luaB_print (lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
int i;
for (i = 1; i <= n; i++) { /* for each argument */
size_t l;
const char *s = luaL_tolstring(L, i, &l); /* convert it to string */
if (i > 1) /* not the first element? */
lua_writestring("\t", 1); /* add a tab before it */
lua_writestring(s, l); /* print it */
lua_pop(L, 1); /* pop result */
}
lua_writeline();
return 0;
static int luaB_print(lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
int i;
for (i = 1; i <= n; i++) { /* for each argument */
size_t l;
const char *s = luaL_tolstring(L, i, &l); /* convert it to string */
if (i > 1) /* not the first element? */
lua_writestring("\t", 1); /* add a tab before it */
lua_writestring(s, l); /* print it */
lua_pop(L, 1); /* pop result */
}
lua_writeline();
return 0;
}
@ -42,152 +42,150 @@ static int luaB_print (lua_State *L) {
** Check first for errors; otherwise an error may interrupt
** the composition of a warning, leaving it unfinished.
*/
static int luaB_warn (lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
int i;
luaL_checkstring(L, 1); /* at least one argument */
for (i = 2; i <= n; i++)
luaL_checkstring(L, i); /* make sure all arguments are strings */
for (i = 1; i < n; i++) /* compose warning */
lua_warning(L, lua_tostring(L, i), 1);
lua_warning(L, lua_tostring(L, n), 0); /* close warning */
return 0;
static int luaB_warn(lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
int i;
luaL_checkstring(L, 1); /* at least one argument */
for (i = 2; i <= n; i++)
luaL_checkstring(L, i); /* make sure all arguments are strings */
for (i = 1; i < n; i++) /* compose warning */
lua_warning(L, lua_tostring(L, i), 1);
lua_warning(L, lua_tostring(L, n), 0); /* close warning */
return 0;
}
#define SPACECHARS " \f\n\r\t\v"
static const char *b_str2int (const char *s, int base, lua_Integer *pn) {
lua_Unsigned n = 0;
int neg = 0;
s += strspn(s, SPACECHARS); /* skip initial spaces */
if (*s == '-') { s++; neg = 1; } /* handle sign */
else if (*s == '+') s++;
if (!isalnum((unsigned char)*s)) /* no digit? */
return NULL;
do {
int digit = (isdigit((unsigned char)*s)) ? *s - '0'
: (toupper((unsigned char)*s) - 'A') + 10;
if (digit >= base) return NULL; /* invalid numeral */
n = n * base + digit;
s++;
} while (isalnum((unsigned char)*s));
s += strspn(s, SPACECHARS); /* skip trailing spaces */
*pn = (lua_Integer)((neg) ? (0u - n) : n);
return s;
static const char *b_str2int(const char *s, int base, lua_Integer *pn) {
lua_Unsigned n = 0;
int neg = 0;
s += strspn(s, SPACECHARS); /* skip initial spaces */
if (*s == '-') { s++; neg = 1; } /* handle sign */
else if (*s == '+') s++;
if (!isalnum((unsigned char)*s)) /* no digit? */
return NULL;
do {
int digit = (isdigit((unsigned char) * s)) ? *s - '0'
: (toupper((unsigned char) * s) - 'A') + 10;
if (digit >= base) return NULL; /* invalid numeral */
n = n * base + digit;
s++;
} while (isalnum((unsigned char)*s));
s += strspn(s, SPACECHARS); /* skip trailing spaces */
*pn = (lua_Integer)((neg) ? (0u - n) : n);
return s;
}
static int luaB_tonumber (lua_State *L) {
if (lua_isnoneornil(L, 2)) { /* standard conversion? */
if (lua_type(L, 1) == LUA_TNUMBER) { /* already a number? */
lua_settop(L, 1); /* yes; return it */
return 1;
}
else {
size_t l;
const char *s = lua_tolstring(L, 1, &l);
if (s != NULL && lua_stringtonumber(L, s) == l + 1)
return 1; /* successful conversion to number */
/* else not a number */
luaL_checkany(L, 1); /* (but there must be some parameter) */
}
}
else {
size_t l;
const char *s;
lua_Integer n = 0; /* to avoid warnings */
lua_Integer base = luaL_checkinteger(L, 2);
luaL_checktype(L, 1, LUA_TSTRING); /* no numbers as strings */
s = lua_tolstring(L, 1, &l);
luaL_argcheck(L, 2 <= base && base <= 36, 2, "base out of range");
if (b_str2int(s, (int)base, &n) == s + l) {
lua_pushinteger(L, n);
return 1;
static int luaB_tonumber(lua_State *L) {
if (lua_isnoneornil(L, 2)) { /* standard conversion? */
if (lua_type(L, 1) == LUA_TNUMBER) { /* already a number? */
lua_settop(L, 1); /* yes; return it */
return 1;
} else {
size_t l;
const char *s = lua_tolstring(L, 1, &l);
if (s != NULL && lua_stringtonumber(L, s) == l + 1)
return 1; /* successful conversion to number */
/* else not a number */
luaL_checkany(L, 1); /* (but there must be some parameter) */
}
} else {
size_t l;
const char *s;
lua_Integer n = 0; /* to avoid warnings */
lua_Integer base = luaL_checkinteger(L, 2);
luaL_checktype(L, 1, LUA_TSTRING); /* no numbers as strings */
s = lua_tolstring(L, 1, &l);
luaL_argcheck(L, 2 <= base && base <= 36, 2, "base out of range");
if (b_str2int(s, (int)base, &n) == s + l) {
lua_pushinteger(L, n);
return 1;
} /* else not a number */
} /* else not a number */
} /* else not a number */
luaL_pushfail(L); /* not a number */
return 1;
luaL_pushfail(L); /* not a number */
return 1;
}
static int luaB_error (lua_State *L) {
int level = (int)luaL_optinteger(L, 2, 1);
lua_settop(L, 1);
if (lua_type(L, 1) == LUA_TSTRING && level > 0) {
luaL_where(L, level); /* add extra information */
lua_pushvalue(L, 1);
lua_concat(L, 2);
}
return lua_error(L);
static int luaB_error(lua_State *L) {
int level = (int)luaL_optinteger(L, 2, 1);
lua_settop(L, 1);
if (lua_type(L, 1) == LUA_TSTRING && level > 0) {
luaL_where(L, level); /* add extra information */
lua_pushvalue(L, 1);
lua_concat(L, 2);
}
return lua_error(L);
}
static int luaB_getmetatable (lua_State *L) {
luaL_checkany(L, 1);
if (!lua_getmetatable(L, 1)) {
lua_pushnil(L);
return 1; /* no metatable */
}
luaL_getmetafield(L, 1, "__metatable");
return 1; /* returns either __metatable field (if present) or metatable */
static int luaB_getmetatable(lua_State *L) {
luaL_checkany(L, 1);
if (!lua_getmetatable(L, 1)) {
lua_pushnil(L);
return 1; /* no metatable */
}
luaL_getmetafield(L, 1, "__metatable");
return 1; /* returns either __metatable field (if present) or metatable */
}
static int luaB_setmetatable (lua_State *L) {
int t = lua_type(L, 2);
luaL_checktype(L, 1, LUA_TTABLE);
luaL_argexpected(L, t == LUA_TNIL || t == LUA_TTABLE, 2, "nil or table");
if (l_unlikely(luaL_getmetafield(L, 1, "__metatable") != LUA_TNIL))
return luaL_error(L, "cannot change a protected metatable");
lua_settop(L, 2);
lua_setmetatable(L, 1);
return 1;
static int luaB_setmetatable(lua_State *L) {
int t = lua_type(L, 2);
luaL_checktype(L, 1, LUA_TTABLE);
luaL_argexpected(L, t == LUA_TNIL || t == LUA_TTABLE, 2, "nil or table");
if (l_unlikely(luaL_getmetafield(L, 1, "__metatable") != LUA_TNIL))
return luaL_error(L, "cannot change a protected metatable");
lua_settop(L, 2);
lua_setmetatable(L, 1);
return 1;
}
static int luaB_rawequal (lua_State *L) {
luaL_checkany(L, 1);
luaL_checkany(L, 2);
lua_pushboolean(L, lua_rawequal(L, 1, 2));
return 1;
static int luaB_rawequal(lua_State *L) {
luaL_checkany(L, 1);
luaL_checkany(L, 2);
lua_pushboolean(L, lua_rawequal(L, 1, 2));
return 1;
}
static int luaB_rawlen (lua_State *L) {
int t = lua_type(L, 1);
luaL_argexpected(L, t == LUA_TTABLE || t == LUA_TSTRING, 1,
"table or string");
lua_pushinteger(L, lua_rawlen(L, 1));
return 1;
static int luaB_rawlen(lua_State *L) {
int t = lua_type(L, 1);
luaL_argexpected(L, t == LUA_TTABLE || t == LUA_TSTRING, 1,
"table or string");
lua_pushinteger(L, lua_rawlen(L, 1));
return 1;
}
static int luaB_rawget (lua_State *L) {
luaL_checktype(L, 1, LUA_TTABLE);
luaL_checkany(L, 2);
lua_settop(L, 2);
lua_rawget(L, 1);
return 1;
static int luaB_rawget(lua_State *L) {
luaL_checktype(L, 1, LUA_TTABLE);
luaL_checkany(L, 2);
lua_settop(L, 2);
lua_rawget(L, 1);
return 1;
}
static int luaB_rawset (lua_State *L) {
luaL_checktype(L, 1, LUA_TTABLE);
luaL_checkany(L, 2);
luaL_checkany(L, 3);
lua_settop(L, 3);
lua_rawset(L, 1);
return 1;
static int luaB_rawset(lua_State *L) {
luaL_checktype(L, 1, LUA_TTABLE);
luaL_checkany(L, 2);
luaL_checkany(L, 3);
lua_settop(L, 3);
lua_rawset(L, 1);
return 1;
}
static int pushmode (lua_State *L, int oldmode) {
if (oldmode == -1)
luaL_pushfail(L); /* invalid call to 'lua_gc' */
else
lua_pushstring(L, (oldmode == LUA_GCINC) ? "incremental"
: "generational");
return 1;
static int pushmode(lua_State *L, int oldmode) {
if (oldmode == -1)
luaL_pushfail(L); /* invalid call to 'lua_gc' */
else
lua_pushstring(L, (oldmode == LUA_GCINC) ? "incremental"
: "generational");
return 1;
}
@ -196,114 +194,117 @@ static int pushmode (lua_State *L, int oldmode) {
*/
#define checkvalres(res) { if (res == -1) break; }
static int luaB_collectgarbage (lua_State *L) {
static const char *const opts[] = {"stop", "restart", "collect",
"count", "step", "setpause", "setstepmul",
"isrunning", "generational", "incremental", NULL};
static const int optsnum[] = {LUA_GCSTOP, LUA_GCRESTART, LUA_GCCOLLECT,
LUA_GCCOUNT, LUA_GCSTEP, LUA_GCSETPAUSE, LUA_GCSETSTEPMUL,
LUA_GCISRUNNING, LUA_GCGEN, LUA_GCINC};
int o = optsnum[luaL_checkoption(L, 1, "collect", opts)];
switch (o) {
case LUA_GCCOUNT: {
int k = lua_gc(L, o);
int b = lua_gc(L, LUA_GCCOUNTB);
checkvalres(k);
lua_pushnumber(L, (lua_Number)k + ((lua_Number)b/1024));
return 1;
static int luaB_collectgarbage(lua_State *L) {
static const char *const opts[] = {"stop", "restart", "collect",
"count", "step", "setpause", "setstepmul",
"isrunning", "generational", "incremental", NULL
};
static const int optsnum[] = {LUA_GCSTOP, LUA_GCRESTART, LUA_GCCOLLECT,
LUA_GCCOUNT, LUA_GCSTEP, LUA_GCSETPAUSE, LUA_GCSETSTEPMUL,
LUA_GCISRUNNING, LUA_GCGEN, LUA_GCINC
};
int o = optsnum[luaL_checkoption(L, 1, "collect", opts)];
switch (o) {
case LUA_GCCOUNT: {
int k = lua_gc(L, o);
int b = lua_gc(L, LUA_GCCOUNTB);
checkvalres(k);
lua_pushnumber(L, (lua_Number)k + ((lua_Number)b / 1024));
return 1;
}
case LUA_GCSTEP: {
int step = (int)luaL_optinteger(L, 2, 0);
int res = lua_gc(L, o, step);
checkvalres(res);
lua_pushboolean(L, res);
return 1;
}
case LUA_GCSETPAUSE:
case LUA_GCSETSTEPMUL: {
int p = (int)luaL_optinteger(L, 2, 0);
int previous = lua_gc(L, o, p);
checkvalres(previous);
lua_pushinteger(L, previous);
return 1;
}
case LUA_GCISRUNNING: {
int res = lua_gc(L, o);
checkvalres(res);
lua_pushboolean(L, res);
return 1;
}
case LUA_GCGEN: {
int minormul = (int)luaL_optinteger(L, 2, 0);
int majormul = (int)luaL_optinteger(L, 3, 0);
return pushmode(L, lua_gc(L, o, minormul, majormul));
}
case LUA_GCINC: {
int pause = (int)luaL_optinteger(L, 2, 0);
int stepmul = (int)luaL_optinteger(L, 3, 0);
int stepsize = (int)luaL_optinteger(L, 4, 0);
return pushmode(L, lua_gc(L, o, pause, stepmul, stepsize));
}
default: {
int res = lua_gc(L, o);
checkvalres(res);
lua_pushinteger(L, res);
return 1;
}
}
case LUA_GCSTEP: {
int step = (int)luaL_optinteger(L, 2, 0);
int res = lua_gc(L, o, step);
checkvalres(res);
lua_pushboolean(L, res);
return 1;
}
case LUA_GCSETPAUSE:
case LUA_GCSETSTEPMUL: {
int p = (int)luaL_optinteger(L, 2, 0);
int previous = lua_gc(L, o, p);
checkvalres(previous);
lua_pushinteger(L, previous);
return 1;
}
case LUA_GCISRUNNING: {
int res = lua_gc(L, o);
checkvalres(res);
lua_pushboolean(L, res);
return 1;
}
case LUA_GCGEN: {
int minormul = (int)luaL_optinteger(L, 2, 0);
int majormul = (int)luaL_optinteger(L, 3, 0);
return pushmode(L, lua_gc(L, o, minormul, majormul));
}
case LUA_GCINC: {
int pause = (int)luaL_optinteger(L, 2, 0);
int stepmul = (int)luaL_optinteger(L, 3, 0);
int stepsize = (int)luaL_optinteger(L, 4, 0);
return pushmode(L, lua_gc(L, o, pause, stepmul, stepsize));
}
default: {
int res = lua_gc(L, o);
checkvalres(res);
lua_pushinteger(L, res);
return 1;
}
}
luaL_pushfail(L); /* invalid call (inside a finalizer) */
return 1;
}
static int luaB_type (lua_State *L) {
int t = lua_type(L, 1);
luaL_argcheck(L, t != LUA_TNONE, 1, "value expected");
lua_pushstring(L, lua_typename(L, t));
return 1;
}
static int luaB_next (lua_State *L) {
luaL_checktype(L, 1, LUA_TTABLE);
lua_settop(L, 2); /* create a 2nd argument if there isn't one */
if (lua_next(L, 1))
return 2;
else {
lua_pushnil(L);
luaL_pushfail(L); /* invalid call (inside a finalizer) */
return 1;
}
}
static int pairscont (lua_State *L, int status, lua_KContext k) {
(void)L; (void)status; (void)k; /* unused */
return 3;
static int luaB_type(lua_State *L) {
int t = lua_type(L, 1);
luaL_argcheck(L, t != LUA_TNONE, 1, "value expected");
lua_pushstring(L, lua_typename(L, t));
return 1;
}
static int luaB_pairs (lua_State *L) {
luaL_checkany(L, 1);
if (luaL_getmetafield(L, 1, "__pairs") == LUA_TNIL) { /* no metamethod? */
lua_pushcfunction(L, luaB_next); /* will return generator, */
lua_pushvalue(L, 1); /* state, */
lua_pushnil(L); /* and initial value */
}
else {
lua_pushvalue(L, 1); /* argument 'self' to metamethod */
lua_callk(L, 1, 3, 0, pairscont); /* get 3 values from metamethod */
}
return 3;
static int luaB_next(lua_State *L) {
luaL_checktype(L, 1, LUA_TTABLE);
lua_settop(L, 2); /* create a 2nd argument if there isn't one */
if (lua_next(L, 1))
return 2;
else {
lua_pushnil(L);
return 1;
}
}
static int pairscont(lua_State *L, int status, lua_KContext k) {
(void)L;
(void)status;
(void)k; /* unused */
return 3;
}
static int luaB_pairs(lua_State *L) {
luaL_checkany(L, 1);
if (luaL_getmetafield(L, 1, "__pairs") == LUA_TNIL) { /* no metamethod? */
lua_pushcfunction(L, luaB_next); /* will return generator, */
lua_pushvalue(L, 1); /* state, */
lua_pushnil(L); /* and initial value */
} else {
lua_pushvalue(L, 1); /* argument 'self' to metamethod */
lua_callk(L, 1, 3, 0, pairscont); /* get 3 values from metamethod */
}
return 3;
}
/*
** Traversal function for 'ipairs'
*/
static int ipairsaux (lua_State *L) {
lua_Integer i = luaL_checkinteger(L, 2);
i = luaL_intop(+, i, 1);
lua_pushinteger(L, i);
return (lua_geti(L, 1, i) == LUA_TNIL) ? 1 : 2;
static int ipairsaux(lua_State *L) {
lua_Integer i = luaL_checkinteger(L, 2);
i = luaL_intop(+, i, 1);
lua_pushinteger(L, i);
return (lua_geti(L, 1, i) == LUA_TNIL) ? 1 : 2;
}
@ -311,38 +312,37 @@ static int ipairsaux (lua_State *L) {
** 'ipairs' function. Returns 'ipairsaux', given "table", 0.
** (The given "table" may not be a table.)
*/
static int luaB_ipairs (lua_State *L) {
luaL_checkany(L, 1);
lua_pushcfunction(L, ipairsaux); /* iteration function */
lua_pushvalue(L, 1); /* state */
lua_pushinteger(L, 0); /* initial value */
return 3;
static int luaB_ipairs(lua_State *L) {
luaL_checkany(L, 1);
lua_pushcfunction(L, ipairsaux); /* iteration function */
lua_pushvalue(L, 1); /* state */
lua_pushinteger(L, 0); /* initial value */
return 3;
}
static int load_aux (lua_State *L, int status, int envidx) {
if (l_likely(status == LUA_OK)) {
if (envidx != 0) { /* 'env' parameter? */
lua_pushvalue(L, envidx); /* environment for loaded function */
if (!lua_setupvalue(L, -2, 1)) /* set it as 1st upvalue */
lua_pop(L, 1); /* remove 'env' if not used by previous call */
static int load_aux(lua_State *L, int status, int envidx) {
if (l_likely(status == LUA_OK)) {
if (envidx != 0) { /* 'env' parameter? */
lua_pushvalue(L, envidx); /* environment for loaded function */
if (!lua_setupvalue(L, -2, 1)) /* set it as 1st upvalue */
lua_pop(L, 1); /* remove 'env' if not used by previous call */
}
return 1;
} else { /* error (message is on top of the stack) */
luaL_pushfail(L);
lua_insert(L, -2); /* put before error message */
return 2; /* return fail plus error message */
}
return 1;
}
else { /* error (message is on top of the stack) */
luaL_pushfail(L);
lua_insert(L, -2); /* put before error message */
return 2; /* return fail plus error message */
}
}
static int luaB_loadfile (lua_State *L) {
const char *fname = luaL_optstring(L, 1, NULL);
const char *mode = luaL_optstring(L, 2, NULL);
int env = (!lua_isnone(L, 3) ? 3 : 0); /* 'env' index or 0 if no 'env' */
int status = luaL_loadfilex(L, fname, mode);
return load_aux(L, status, env);
static int luaB_loadfile(lua_State *L) {
const char *fname = luaL_optstring(L, 1, NULL);
const char *mode = luaL_optstring(L, 2, NULL);
int env = (!lua_isnone(L, 3) ? 3 : 0); /* 'env' index or 0 if no 'env' */
int status = luaL_loadfilex(L, fname, mode);
return load_aux(L, status, env);
}
@ -367,87 +367,85 @@ static int luaB_loadfile (lua_State *L) {
** stack top. Instead, it keeps its resulting string in a
** reserved slot inside the stack.
*/
static const char *generic_reader (lua_State *L, void *ud, size_t *size) {
(void)(ud); /* not used */
luaL_checkstack(L, 2, "too many nested functions");
lua_pushvalue(L, 1); /* get function */
lua_call(L, 0, 1); /* call it */
if (lua_isnil(L, -1)) {
lua_pop(L, 1); /* pop result */
*size = 0;
return NULL;
}
else if (l_unlikely(!lua_isstring(L, -1)))
luaL_error(L, "reader function must return a string");
lua_replace(L, RESERVEDSLOT); /* save string in reserved slot */
return lua_tolstring(L, RESERVEDSLOT, size);
static const char *generic_reader(lua_State *L, void *ud, size_t *size) {
(void)(ud); /* not used */
luaL_checkstack(L, 2, "too many nested functions");
lua_pushvalue(L, 1); /* get function */
lua_call(L, 0, 1); /* call it */
if (lua_isnil(L, -1)) {
lua_pop(L, 1); /* pop result */
*size = 0;
return NULL;
} else if (l_unlikely(!lua_isstring(L, -1)))
luaL_error(L, "reader function must return a string");
lua_replace(L, RESERVEDSLOT); /* save string in reserved slot */
return lua_tolstring(L, RESERVEDSLOT, size);
}
static int luaB_load (lua_State *L) {
int status;
size_t l;
const char *s = lua_tolstring(L, 1, &l);
const char *mode = luaL_optstring(L, 3, "bt");
int env = (!lua_isnone(L, 4) ? 4 : 0); /* 'env' index or 0 if no 'env' */
if (s != NULL) { /* loading a string? */
const char *chunkname = luaL_optstring(L, 2, s);
status = luaL_loadbufferx(L, s, l, chunkname, mode);
}
else { /* loading from a reader function */
const char *chunkname = luaL_optstring(L, 2, "=(load)");
luaL_checktype(L, 1, LUA_TFUNCTION);
lua_settop(L, RESERVEDSLOT); /* create reserved slot */
status = lua_load(L, generic_reader, NULL, chunkname, mode);
}
return load_aux(L, status, env);
static int luaB_load(lua_State *L) {
int status;
size_t l;
const char *s = lua_tolstring(L, 1, &l);
const char *mode = luaL_optstring(L, 3, "bt");
int env = (!lua_isnone(L, 4) ? 4 : 0); /* 'env' index or 0 if no 'env' */
if (s != NULL) { /* loading a string? */
const char *chunkname = luaL_optstring(L, 2, s);
status = luaL_loadbufferx(L, s, l, chunkname, mode);
} else { /* loading from a reader function */
const char *chunkname = luaL_optstring(L, 2, "=(load)");
luaL_checktype(L, 1, LUA_TFUNCTION);
lua_settop(L, RESERVEDSLOT); /* create reserved slot */
status = lua_load(L, generic_reader, NULL, chunkname, mode);
}
return load_aux(L, status, env);
}
/* }====================================================== */
static int dofilecont (lua_State *L, int d1, lua_KContext d2) {
(void)d1; (void)d2; /* only to match 'lua_Kfunction' prototype */
return lua_gettop(L) - 1;
static int dofilecont(lua_State *L, int d1, lua_KContext d2) {
(void)d1;
(void)d2; /* only to match 'lua_Kfunction' prototype */
return lua_gettop(L) - 1;
}
static int luaB_dofile (lua_State *L) {
const char *fname = luaL_optstring(L, 1, NULL);
lua_settop(L, 1);
if (l_unlikely(luaL_loadfile(L, fname) != LUA_OK))
return lua_error(L);
lua_callk(L, 0, LUA_MULTRET, 0, dofilecont);
return dofilecont(L, 0, 0);
static int luaB_dofile(lua_State *L) {
const char *fname = luaL_optstring(L, 1, NULL);
lua_settop(L, 1);
if (l_unlikely(luaL_loadfile(L, fname) != LUA_OK))
return lua_error(L);
lua_callk(L, 0, LUA_MULTRET, 0, dofilecont);
return dofilecont(L, 0, 0);
}
static int luaB_assert (lua_State *L) {
if (l_likely(lua_toboolean(L, 1))) /* condition is true? */
return lua_gettop(L); /* return all arguments */
else { /* error */
luaL_checkany(L, 1); /* there must be a condition */
lua_remove(L, 1); /* remove it */
lua_pushliteral(L, "assertion failed!"); /* default message */
lua_settop(L, 1); /* leave only message (default if no other one) */
return luaB_error(L); /* call 'error' */
}
static int luaB_assert(lua_State *L) {
if (l_likely(lua_toboolean(L, 1))) /* condition is true? */
return lua_gettop(L); /* return all arguments */
else { /* error */
luaL_checkany(L, 1); /* there must be a condition */
lua_remove(L, 1); /* remove it */
lua_pushliteral(L, "assertion failed!"); /* default message */
lua_settop(L, 1); /* leave only message (default if no other one) */
return luaB_error(L); /* call 'error' */
}
}
static int luaB_select (lua_State *L) {
int n = lua_gettop(L);
if (lua_type(L, 1) == LUA_TSTRING && *lua_tostring(L, 1) == '#') {
lua_pushinteger(L, n-1);
return 1;
}
else {
lua_Integer i = luaL_checkinteger(L, 1);
if (i < 0) i = n + i;
else if (i > n) i = n;
luaL_argcheck(L, 1 <= i, 1, "index out of range");
return n - (int)i;
}
static int luaB_select(lua_State *L) {
int n = lua_gettop(L);
if (lua_type(L, 1) == LUA_TSTRING && *lua_tostring(L, 1) == '#') {
lua_pushinteger(L, n - 1);
return 1;
} else {
lua_Integer i = luaL_checkinteger(L, 1);
if (i < 0) i = n + i;
else if (i > n) i = n;
luaL_argcheck(L, 1 <= i, 1, "index out of range");
return n - (int)i;
}
}
@ -458,24 +456,23 @@ static int luaB_select (lua_State *L) {
** 'extra' values (where 'extra' is exactly the number of items to be
** ignored).
*/
static int finishpcall (lua_State *L, int status, lua_KContext extra) {
if (l_unlikely(status != LUA_OK && status != LUA_YIELD)) { /* error? */
lua_pushboolean(L, 0); /* first result (false) */
lua_pushvalue(L, -2); /* error message */
return 2; /* return false, msg */
}
else
return lua_gettop(L) - (int)extra; /* return all results */
static int finishpcall(lua_State *L, int status, lua_KContext extra) {
if (l_unlikely(status != LUA_OK && status != LUA_YIELD)) { /* error? */
lua_pushboolean(L, 0); /* first result (false) */
lua_pushvalue(L, -2); /* error message */
return 2; /* return false, msg */
} else
return lua_gettop(L) - (int)extra; /* return all results */
}
static int luaB_pcall (lua_State *L) {
int status;
luaL_checkany(L, 1);
lua_pushboolean(L, 1); /* first result if no errors */
lua_insert(L, 1); /* put it in place */
status = lua_pcallk(L, lua_gettop(L) - 2, LUA_MULTRET, 0, 0, finishpcall);
return finishpcall(L, status, 0);
static int luaB_pcall(lua_State *L) {
int status;
luaL_checkany(L, 1);
lua_pushboolean(L, 1); /* first result if no errors */
lua_insert(L, 1); /* put it in place */
status = lua_pcallk(L, lua_gettop(L) - 2, LUA_MULTRET, 0, 0, finishpcall);
return finishpcall(L, status, 0);
}
@ -484,66 +481,66 @@ static int luaB_pcall (lua_State *L) {
** stack will have <f, err, true, f, [args...]>; so, the function passes
** 2 to 'finishpcall' to skip the 2 first values when returning results.
*/
static int luaB_xpcall (lua_State *L) {
int status;
int n = lua_gettop(L);
luaL_checktype(L, 2, LUA_TFUNCTION); /* check error function */
lua_pushboolean(L, 1); /* first result */
lua_pushvalue(L, 1); /* function */
lua_rotate(L, 3, 2); /* move them below function's arguments */
status = lua_pcallk(L, n - 2, LUA_MULTRET, 2, 2, finishpcall);
return finishpcall(L, status, 2);
static int luaB_xpcall(lua_State *L) {
int status;
int n = lua_gettop(L);
luaL_checktype(L, 2, LUA_TFUNCTION); /* check error function */
lua_pushboolean(L, 1); /* first result */
lua_pushvalue(L, 1); /* function */
lua_rotate(L, 3, 2); /* move them below function's arguments */
status = lua_pcallk(L, n - 2, LUA_MULTRET, 2, 2, finishpcall);
return finishpcall(L, status, 2);
}
static int luaB_tostring (lua_State *L) {
luaL_checkany(L, 1);
luaL_tolstring(L, 1, NULL);
return 1;
static int luaB_tostring(lua_State *L) {
luaL_checkany(L, 1);
luaL_tolstring(L, 1, NULL);
return 1;
}
static const luaL_Reg base_funcs[] = {
{"assert", luaB_assert},
{"collectgarbage", luaB_collectgarbage},
{"dofile", luaB_dofile},
{"error", luaB_error},
{"getmetatable", luaB_getmetatable},
{"ipairs", luaB_ipairs},
{"loadfile", luaB_loadfile},
{"load", luaB_load},
{"next", luaB_next},
{"pairs", luaB_pairs},
{"pcall", luaB_pcall},
{"print", luaB_print},
{"warn", luaB_warn},
{"rawequal", luaB_rawequal},
{"rawlen", luaB_rawlen},
{"rawget", luaB_rawget},
{"rawset", luaB_rawset},
{"select", luaB_select},
{"setmetatable", luaB_setmetatable},
{"tonumber", luaB_tonumber},
{"tostring", luaB_tostring},
{"type", luaB_type},
{"xpcall", luaB_xpcall},
/* placeholders */
{LUA_GNAME, NULL},
{"_VERSION", NULL},
{NULL, NULL}
{"assert", luaB_assert},
{"collectgarbage", luaB_collectgarbage},
{"dofile", luaB_dofile},
{"error", luaB_error},
{"getmetatable", luaB_getmetatable},
{"ipairs", luaB_ipairs},
{"loadfile", luaB_loadfile},
{"load", luaB_load},
{"next", luaB_next},
{"pairs", luaB_pairs},
{"pcall", luaB_pcall},
{"print", luaB_print},
{"warn", luaB_warn},
{"rawequal", luaB_rawequal},
{"rawlen", luaB_rawlen},
{"rawget", luaB_rawget},
{"rawset", luaB_rawset},
{"select", luaB_select},
{"setmetatable", luaB_setmetatable},
{"tonumber", luaB_tonumber},
{"tostring", luaB_tostring},
{"type", luaB_type},
{"xpcall", luaB_xpcall},
/* placeholders */
{LUA_GNAME, NULL},
{"_VERSION", NULL},
{NULL, NULL}
};
LUAMOD_API int luaopen_base (lua_State *L) {
/* open lib into global table */
lua_pushglobaltable(L);
luaL_setfuncs(L, base_funcs, 0);
/* set global _G */
lua_pushvalue(L, -1);
lua_setfield(L, -2, LUA_GNAME);
/* set global _VERSION */
lua_pushliteral(L, LUA_VERSION);
lua_setfield(L, -2, "_VERSION");
return 1;
LUAMOD_API int luaopen_base(lua_State *L) {
/* open lib into global table */
lua_pushglobaltable(L);
luaL_setfuncs(L, base_funcs, 0);
/* set global _G */
lua_pushvalue(L, -1);
lua_setfield(L, -2, LUA_GNAME);
/* set global _VERSION */
lua_pushliteral(L, LUA_VERSION);
lua_setfield(L, -2, "_VERSION");
return 1;
}

File diff suppressed because it is too large Load diff

View file

@ -24,20 +24,20 @@
** grep "ORDER OPR" if you change these enums (ORDER OP)
*/
typedef enum BinOpr {
/* arithmetic operators */
OPR_ADD, OPR_SUB, OPR_MUL, OPR_MOD, OPR_POW,
OPR_DIV, OPR_IDIV,
/* bitwise operators */
OPR_BAND, OPR_BOR, OPR_BXOR,
OPR_SHL, OPR_SHR,
/* string operator */
OPR_CONCAT,
/* comparison operators */
OPR_EQ, OPR_LT, OPR_LE,
OPR_NE, OPR_GT, OPR_GE,
/* logical operators */
OPR_AND, OPR_OR,
OPR_NOBINOPR
/* arithmetic operators */
OPR_ADD, OPR_SUB, OPR_MUL, OPR_MOD, OPR_POW,
OPR_DIV, OPR_IDIV,
/* bitwise operators */
OPR_BAND, OPR_BOR, OPR_BXOR,
OPR_SHL, OPR_SHR,
/* string operator */
OPR_CONCAT,
/* comparison operators */
OPR_EQ, OPR_LT, OPR_LE,
OPR_NE, OPR_GT, OPR_GE,
/* logical operators */
OPR_AND, OPR_OR,
OPR_NOBINOPR
} BinOpr;
@ -59,43 +59,43 @@ typedef enum UnOpr { OPR_MINUS, OPR_BNOT, OPR_NOT, OPR_LEN, OPR_NOUNOPR } UnOpr;
#define luaK_jumpto(fs,t) luaK_patchlist(fs, luaK_jump(fs), t)
LUAI_FUNC int luaK_code (FuncState *fs, Instruction i);
LUAI_FUNC int luaK_codeABx (FuncState *fs, OpCode o, int A, unsigned int Bx);
LUAI_FUNC int luaK_codeABCk (FuncState *fs, OpCode o, int A,
int B, int C, int k);
LUAI_FUNC int luaK_exp2const (FuncState *fs, const expdesc *e, TValue *v);
LUAI_FUNC void luaK_fixline (FuncState *fs, int line);
LUAI_FUNC void luaK_nil (FuncState *fs, int from, int n);
LUAI_FUNC void luaK_reserveregs (FuncState *fs, int n);
LUAI_FUNC void luaK_checkstack (FuncState *fs, int n);
LUAI_FUNC void luaK_int (FuncState *fs, int reg, lua_Integer n);
LUAI_FUNC void luaK_dischargevars (FuncState *fs, expdesc *e);
LUAI_FUNC int luaK_exp2anyreg (FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_exp2anyregup (FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_exp2nextreg (FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_exp2val (FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_self (FuncState *fs, expdesc *e, expdesc *key);
LUAI_FUNC void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k);
LUAI_FUNC void luaK_goiftrue (FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_goiffalse (FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_storevar (FuncState *fs, expdesc *var, expdesc *e);
LUAI_FUNC void luaK_setreturns (FuncState *fs, expdesc *e, int nresults);
LUAI_FUNC void luaK_setoneret (FuncState *fs, expdesc *e);
LUAI_FUNC int luaK_jump (FuncState *fs);
LUAI_FUNC void luaK_ret (FuncState *fs, int first, int nret);
LUAI_FUNC void luaK_patchlist (FuncState *fs, int list, int target);
LUAI_FUNC void luaK_patchtohere (FuncState *fs, int list);
LUAI_FUNC void luaK_concat (FuncState *fs, int *l1, int l2);
LUAI_FUNC int luaK_getlabel (FuncState *fs);
LUAI_FUNC void luaK_prefix (FuncState *fs, UnOpr op, expdesc *v, int line);
LUAI_FUNC void luaK_infix (FuncState *fs, BinOpr op, expdesc *v);
LUAI_FUNC void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1,
expdesc *v2, int line);
LUAI_FUNC void luaK_settablesize (FuncState *fs, int pc,
int ra, int asize, int hsize);
LUAI_FUNC void luaK_setlist (FuncState *fs, int base, int nelems, int tostore);
LUAI_FUNC void luaK_finish (FuncState *fs);
LUAI_FUNC l_noret luaK_semerror (LexState *ls, const char *msg);
LUAI_FUNC int luaK_code(FuncState *fs, Instruction i);
LUAI_FUNC int luaK_codeABx(FuncState *fs, OpCode o, int A, unsigned int Bx);
LUAI_FUNC int luaK_codeABCk(FuncState *fs, OpCode o, int A,
int B, int C, int k);
LUAI_FUNC int luaK_exp2const(FuncState *fs, const expdesc *e, TValue *v);
LUAI_FUNC void luaK_fixline(FuncState *fs, int line);
LUAI_FUNC void luaK_nil(FuncState *fs, int from, int n);
LUAI_FUNC void luaK_reserveregs(FuncState *fs, int n);
LUAI_FUNC void luaK_checkstack(FuncState *fs, int n);
LUAI_FUNC void luaK_int(FuncState *fs, int reg, lua_Integer n);
LUAI_FUNC void luaK_dischargevars(FuncState *fs, expdesc *e);
LUAI_FUNC int luaK_exp2anyreg(FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_exp2anyregup(FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_exp2nextreg(FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_exp2val(FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_self(FuncState *fs, expdesc *e, expdesc *key);
LUAI_FUNC void luaK_indexed(FuncState *fs, expdesc *t, expdesc *k);
LUAI_FUNC void luaK_goiftrue(FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_goiffalse(FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_storevar(FuncState *fs, expdesc *var, expdesc *e);
LUAI_FUNC void luaK_setreturns(FuncState *fs, expdesc *e, int nresults);
LUAI_FUNC void luaK_setoneret(FuncState *fs, expdesc *e);
LUAI_FUNC int luaK_jump(FuncState *fs);
LUAI_FUNC void luaK_ret(FuncState *fs, int first, int nret);
LUAI_FUNC void luaK_patchlist(FuncState *fs, int list, int target);
LUAI_FUNC void luaK_patchtohere(FuncState *fs, int list);
LUAI_FUNC void luaK_concat(FuncState *fs, int *l1, int l2);
LUAI_FUNC int luaK_getlabel(FuncState *fs);
LUAI_FUNC void luaK_prefix(FuncState *fs, UnOpr op, expdesc *v, int line);
LUAI_FUNC void luaK_infix(FuncState *fs, BinOpr op, expdesc *v);
LUAI_FUNC void luaK_posfix(FuncState *fs, BinOpr op, expdesc *v1,
expdesc *v2, int line);
LUAI_FUNC void luaK_settablesize(FuncState *fs, int pc,
int ra, int asize, int hsize);
LUAI_FUNC void luaK_setlist(FuncState *fs, int base, int nelems, int tostore);
LUAI_FUNC void luaK_finish(FuncState *fs);
LUAI_FUNC l_noret luaK_semerror(LexState *ls, const char *msg);
#endif

View file

@ -18,10 +18,10 @@
#include "lualib.h"
static lua_State *getco (lua_State *L) {
lua_State *co = lua_tothread(L, 1);
luaL_argexpected(L, co, 1, "thread");
return co;
static lua_State *getco(lua_State *L) {
lua_State *co = lua_tothread(L, 1);
luaL_argexpected(L, co, 1, "thread");
return co;
}
@ -29,88 +29,86 @@ static lua_State *getco (lua_State *L) {
** Resumes a coroutine. Returns the number of results for non-error
** cases or -1 for errors.
*/
static int auxresume (lua_State *L, lua_State *co, int narg) {
int status, nres;
if (l_unlikely(!lua_checkstack(co, narg))) {
lua_pushliteral(L, "too many arguments to resume");
return -1; /* error flag */
}
lua_xmove(L, co, narg);
status = lua_resume(co, L, narg, &nres);
if (l_likely(status == LUA_OK || status == LUA_YIELD)) {
if (l_unlikely(!lua_checkstack(L, nres + 1))) {
lua_pop(co, nres); /* remove results anyway */
lua_pushliteral(L, "too many results to resume");
return -1; /* error flag */
static int auxresume(lua_State *L, lua_State *co, int narg) {
int status, nres;
if (l_unlikely(!lua_checkstack(co, narg))) {
lua_pushliteral(L, "too many arguments to resume");
return -1; /* error flag */
}
lua_xmove(co, L, nres); /* move yielded values */
return nres;
}
else {
lua_xmove(co, L, 1); /* move error message */
return -1; /* error flag */
}
}
static int luaB_coresume (lua_State *L) {
lua_State *co = getco(L);
int r;
r = auxresume(L, co, lua_gettop(L) - 1);
if (l_unlikely(r < 0)) {
lua_pushboolean(L, 0);
lua_insert(L, -2);
return 2; /* return false + error message */
}
else {
lua_pushboolean(L, 1);
lua_insert(L, -(r + 1));
return r + 1; /* return true + 'resume' returns */
}
}
static int luaB_auxwrap (lua_State *L) {
lua_State *co = lua_tothread(L, lua_upvalueindex(1));
int r = auxresume(L, co, lua_gettop(L));
if (l_unlikely(r < 0)) { /* error? */
int stat = lua_status(co);
if (stat != LUA_OK && stat != LUA_YIELD) { /* error in the coroutine? */
stat = lua_closethread(co, L); /* close its tbc variables */
lua_assert(stat != LUA_OK);
lua_xmove(co, L, 1); /* move error message to the caller */
lua_xmove(L, co, narg);
status = lua_resume(co, L, narg, &nres);
if (l_likely(status == LUA_OK || status == LUA_YIELD)) {
if (l_unlikely(!lua_checkstack(L, nres + 1))) {
lua_pop(co, nres); /* remove results anyway */
lua_pushliteral(L, "too many results to resume");
return -1; /* error flag */
}
lua_xmove(co, L, nres); /* move yielded values */
return nres;
} else {
lua_xmove(co, L, 1); /* move error message */
return -1; /* error flag */
}
if (stat != LUA_ERRMEM && /* not a memory error and ... */
lua_type(L, -1) == LUA_TSTRING) { /* ... error object is a string? */
luaL_where(L, 1); /* add extra info, if available */
lua_insert(L, -2);
lua_concat(L, 2);
}
static int luaB_coresume(lua_State *L) {
lua_State *co = getco(L);
int r;
r = auxresume(L, co, lua_gettop(L) - 1);
if (l_unlikely(r < 0)) {
lua_pushboolean(L, 0);
lua_insert(L, -2);
return 2; /* return false + error message */
} else {
lua_pushboolean(L, 1);
lua_insert(L, -(r + 1));
return r + 1; /* return true + 'resume' returns */
}
return lua_error(L); /* propagate error */
}
return r;
}
static int luaB_cocreate (lua_State *L) {
lua_State *NL;
luaL_checktype(L, 1, LUA_TFUNCTION);
NL = lua_newthread(L);
lua_pushvalue(L, 1); /* move function to top */
lua_xmove(L, NL, 1); /* move function from L to NL */
return 1;
static int luaB_auxwrap(lua_State *L) {
lua_State *co = lua_tothread(L, lua_upvalueindex(1));
int r = auxresume(L, co, lua_gettop(L));
if (l_unlikely(r < 0)) { /* error? */
int stat = lua_status(co);
if (stat != LUA_OK && stat != LUA_YIELD) { /* error in the coroutine? */
stat = lua_closethread(co, L); /* close its tbc variables */
lua_assert(stat != LUA_OK);
lua_xmove(co, L, 1); /* move error message to the caller */
}
if (stat != LUA_ERRMEM && /* not a memory error and ... */
lua_type(L, -1) == LUA_TSTRING) { /* ... error object is a string? */
luaL_where(L, 1); /* add extra info, if available */
lua_insert(L, -2);
lua_concat(L, 2);
}
return lua_error(L); /* propagate error */
}
return r;
}
static int luaB_cowrap (lua_State *L) {
luaB_cocreate(L);
lua_pushcclosure(L, luaB_auxwrap, 1);
return 1;
static int luaB_cocreate(lua_State *L) {
lua_State *NL;
luaL_checktype(L, 1, LUA_TFUNCTION);
NL = lua_newthread(L);
lua_pushvalue(L, 1); /* move function to top */
lua_xmove(L, NL, 1); /* move function from L to NL */
return 1;
}
static int luaB_yield (lua_State *L) {
return lua_yield(L, lua_gettop(L));
static int luaB_cowrap(lua_State *L) {
luaB_cocreate(L);
lua_pushcclosure(L, luaB_auxwrap, 1);
return 1;
}
static int luaB_yield(lua_State *L) {
return lua_yield(L, lua_gettop(L));
}
@ -121,90 +119,90 @@ static int luaB_yield (lua_State *L) {
static const char *const statname[] =
{"running", "dead", "suspended", "normal"};
{"running", "dead", "suspended", "normal"};
static int auxstatus (lua_State *L, lua_State *co) {
if (L == co) return COS_RUN;
else {
switch (lua_status(co)) {
case LUA_YIELD:
return COS_YIELD;
case LUA_OK: {
lua_Debug ar;
if (lua_getstack(co, 0, &ar)) /* does it have frames? */
return COS_NORM; /* it is running */
else if (lua_gettop(co) == 0)
return COS_DEAD;
else
return COS_YIELD; /* initial state */
}
default: /* some error occurred */
return COS_DEAD;
static int auxstatus(lua_State *L, lua_State *co) {
if (L == co) return COS_RUN;
else {
switch (lua_status(co)) {
case LUA_YIELD:
return COS_YIELD;
case LUA_OK: {
lua_Debug ar;
if (lua_getstack(co, 0, &ar)) /* does it have frames? */
return COS_NORM; /* it is running */
else if (lua_gettop(co) == 0)
return COS_DEAD;
else
return COS_YIELD; /* initial state */
}
default: /* some error occurred */
return COS_DEAD;
}
}
}
}
static int luaB_costatus (lua_State *L) {
lua_State *co = getco(L);
lua_pushstring(L, statname[auxstatus(L, co)]);
return 1;
static int luaB_costatus(lua_State *L) {
lua_State *co = getco(L);
lua_pushstring(L, statname[auxstatus(L, co)]);
return 1;
}
static int luaB_yieldable (lua_State *L) {
lua_State *co = lua_isnone(L, 1) ? L : getco(L);
lua_pushboolean(L, lua_isyieldable(co));
return 1;
static int luaB_yieldable(lua_State *L) {
lua_State *co = lua_isnone(L, 1) ? L : getco(L);
lua_pushboolean(L, lua_isyieldable(co));
return 1;
}
static int luaB_corunning (lua_State *L) {
int ismain = lua_pushthread(L);
lua_pushboolean(L, ismain);
return 2;
static int luaB_corunning(lua_State *L) {
int ismain = lua_pushthread(L);
lua_pushboolean(L, ismain);
return 2;
}
static int luaB_close (lua_State *L) {
lua_State *co = getco(L);
int status = auxstatus(L, co);
switch (status) {
case COS_DEAD: case COS_YIELD: {
status = lua_closethread(co, L);
if (status == LUA_OK) {
lua_pushboolean(L, 1);
return 1;
}
else {
lua_pushboolean(L, 0);
lua_xmove(co, L, 1); /* move error message */
return 2;
}
static int luaB_close(lua_State *L) {
lua_State *co = getco(L);
int status = auxstatus(L, co);
switch (status) {
case COS_DEAD:
case COS_YIELD: {
status = lua_closethread(co, L);
if (status == LUA_OK) {
lua_pushboolean(L, 1);
return 1;
} else {
lua_pushboolean(L, 0);
lua_xmove(co, L, 1); /* move error message */
return 2;
}
}
default: /* normal or running coroutine */
return luaL_error(L, "cannot close a %s coroutine", statname[status]);
}
default: /* normal or running coroutine */
return luaL_error(L, "cannot close a %s coroutine", statname[status]);
}
}
static const luaL_Reg co_funcs[] = {
{"create", luaB_cocreate},
{"resume", luaB_coresume},
{"running", luaB_corunning},
{"status", luaB_costatus},
{"wrap", luaB_cowrap},
{"yield", luaB_yield},
{"isyieldable", luaB_yieldable},
{"close", luaB_close},
{NULL, NULL}
{"create", luaB_cocreate},
{"resume", luaB_coresume},
{"running", luaB_corunning},
{"status", luaB_costatus},
{"wrap", luaB_cowrap},
{"yield", luaB_yield},
{"isyieldable", luaB_yieldable},
{"close", luaB_close},
{NULL, NULL}
};
LUAMOD_API int luaopen_coroutine (lua_State *L) {
luaL_newlib(L, co_funcs);
return 1;
LUAMOD_API int luaopen_coroutine(lua_State *L) {
luaL_newlib(L, co_funcs);
return 1;
}

View file

@ -26,39 +26,39 @@
LUAI_DDEF const lu_byte luai_ctype_[UCHAR_MAX + 2] = {
0x00, /* EOZ */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0. */
0x00, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 1. */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x0c, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, /* 2. */
0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04,
0x16, 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, /* 3. */
0x16, 0x16, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04,
0x04, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x05, /* 4. */
0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05,
0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, /* 5. */
0x05, 0x05, 0x05, 0x04, 0x04, 0x04, 0x04, 0x05,
0x04, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x05, /* 6. */
0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05,
0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, /* 7. */
0x05, 0x05, 0x05, 0x04, 0x04, 0x04, 0x04, 0x00,
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA, /* 8. */
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA,
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA, /* 9. */
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA,
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA, /* a. */
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA,
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA, /* b. */
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA,
0x00, 0x00, NONA, NONA, NONA, NONA, NONA, NONA, /* c. */
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA,
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA, /* d. */
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA,
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA, /* e. */
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA,
NONA, NONA, NONA, NONA, NONA, 0x00, 0x00, 0x00, /* f. */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
0x00, /* EOZ */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0. */
0x00, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 1. */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x0c, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, /* 2. */
0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04,
0x16, 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, /* 3. */
0x16, 0x16, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04,
0x04, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x05, /* 4. */
0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05,
0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, /* 5. */
0x05, 0x05, 0x05, 0x04, 0x04, 0x04, 0x04, 0x05,
0x04, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x05, /* 6. */
0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05,
0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, /* 7. */
0x05, 0x05, 0x05, 0x04, 0x04, 0x04, 0x04, 0x00,
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA, /* 8. */
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA,
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA, /* 9. */
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA,
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA, /* a. */
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA,
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA, /* b. */
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA,
0x00, 0x00, NONA, NONA, NONA, NONA, NONA, NONA, /* c. */
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA,
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA, /* d. */
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA,
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA, /* e. */
NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA,
NONA, NONA, NONA, NONA, NONA, 0x00, 0x00, 0x00, /* f. */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
#endif /* } */

View file

@ -32,56 +32,56 @@ static const char *const HOOKKEY = "_HOOKKEY";
** guarantees about its stack space; any push in L1 must be
** checked.
*/
static void checkstack (lua_State *L, lua_State *L1, int n) {
if (l_unlikely(L != L1 && !lua_checkstack(L1, n)))
luaL_error(L, "stack overflow");
static void checkstack(lua_State *L, lua_State *L1, int n) {
if (l_unlikely(L != L1 && !lua_checkstack(L1, n)))
luaL_error(L, "stack overflow");
}
static int db_getregistry (lua_State *L) {
lua_pushvalue(L, LUA_REGISTRYINDEX);
return 1;
static int db_getregistry(lua_State *L) {
lua_pushvalue(L, LUA_REGISTRYINDEX);
return 1;
}
static int db_getmetatable (lua_State *L) {
luaL_checkany(L, 1);
if (!lua_getmetatable(L, 1)) {
lua_pushnil(L); /* no metatable */
}
return 1;
static int db_getmetatable(lua_State *L) {
luaL_checkany(L, 1);
if (!lua_getmetatable(L, 1)) {
lua_pushnil(L); /* no metatable */
}
return 1;
}
static int db_setmetatable (lua_State *L) {
int t = lua_type(L, 2);
luaL_argexpected(L, t == LUA_TNIL || t == LUA_TTABLE, 2, "nil or table");
lua_settop(L, 2);
lua_setmetatable(L, 1);
return 1; /* return 1st argument */
static int db_setmetatable(lua_State *L) {
int t = lua_type(L, 2);
luaL_argexpected(L, t == LUA_TNIL || t == LUA_TTABLE, 2, "nil or table");
lua_settop(L, 2);
lua_setmetatable(L, 1);
return 1; /* return 1st argument */
}
static int db_getuservalue (lua_State *L) {
int n = (int)luaL_optinteger(L, 2, 1);
if (lua_type(L, 1) != LUA_TUSERDATA)
luaL_pushfail(L);
else if (lua_getiuservalue(L, 1, n) != LUA_TNONE) {
lua_pushboolean(L, 1);
return 2;
}
return 1;
static int db_getuservalue(lua_State *L) {
int n = (int)luaL_optinteger(L, 2, 1);
if (lua_type(L, 1) != LUA_TUSERDATA)
luaL_pushfail(L);
else if (lua_getiuservalue(L, 1, n) != LUA_TNONE) {
lua_pushboolean(L, 1);
return 2;
}
return 1;
}
static int db_setuservalue (lua_State *L) {
int n = (int)luaL_optinteger(L, 3, 1);
luaL_checktype(L, 1, LUA_TUSERDATA);
luaL_checkany(L, 2);
lua_settop(L, 2);
if (!lua_setiuservalue(L, 1, n))
luaL_pushfail(L);
return 1;
static int db_setuservalue(lua_State *L) {
int n = (int)luaL_optinteger(L, 3, 1);
luaL_checktype(L, 1, LUA_TUSERDATA);
luaL_checkany(L, 2);
lua_settop(L, 2);
if (!lua_setiuservalue(L, 1, n))
luaL_pushfail(L);
return 1;
}
@ -91,15 +91,14 @@ static int db_setuservalue (lua_State *L) {
** 1 if this argument is present (so that functions can skip it to
** access their other arguments)
*/
static lua_State *getthread (lua_State *L, int *arg) {
if (lua_isthread(L, 1)) {
*arg = 1;
return lua_tothread(L, 1);
}
else {
*arg = 0;
return L; /* function will operate over current thread */
}
static lua_State *getthread(lua_State *L, int *arg) {
if (lua_isthread(L, 1)) {
*arg = 1;
return lua_tothread(L, 1);
} else {
*arg = 0;
return L; /* function will operate over current thread */
}
}
@ -108,19 +107,19 @@ static lua_State *getthread (lua_State *L, int *arg) {
** from 'lua_getinfo' into result table. Key is always a string;
** value can be a string, an int, or a boolean.
*/
static void settabss (lua_State *L, const char *k, const char *v) {
lua_pushstring(L, v);
lua_setfield(L, -2, k);
static void settabss(lua_State *L, const char *k, const char *v) {
lua_pushstring(L, v);
lua_setfield(L, -2, k);
}
static void settabsi (lua_State *L, const char *k, int v) {
lua_pushinteger(L, v);
lua_setfield(L, -2, k);
static void settabsi(lua_State *L, const char *k, int v) {
lua_pushinteger(L, v);
lua_setfield(L, -2, k);
}
static void settabsb (lua_State *L, const char *k, int v) {
lua_pushboolean(L, v);
lua_setfield(L, -2, k);
static void settabsb(lua_State *L, const char *k, int v) {
lua_pushboolean(L, v);
lua_setfield(L, -2, k);
}
@ -131,12 +130,12 @@ static void settabsb (lua_State *L, const char *k, int v) {
** 'lua_getinfo' on top of the result table so that it can call
** 'lua_setfield'.
*/
static void treatstackoption (lua_State *L, lua_State *L1, const char *fname) {
if (L == L1)
lua_rotate(L, -2, 1); /* exchange object and table */
else
lua_xmove(L1, L, 1); /* move object to the "main" stack */
lua_setfield(L, -2, fname); /* put object into table */
static void treatstackoption(lua_State *L, lua_State *L1, const char *fname) {
if (L == L1)
lua_rotate(L, -2, 1); /* exchange object and table */
else
lua_xmove(L1, L, 1); /* move object to the "main" stack */
lua_setfield(L, -2, fname); /* put object into table */
}
@ -146,135 +145,132 @@ static void treatstackoption (lua_State *L, lua_State *L1, const char *fname) {
** two optional outputs (function and line table) from function
** 'lua_getinfo'.
*/
static int db_getinfo (lua_State *L) {
lua_Debug ar;
int arg;
lua_State *L1 = getthread(L, &arg);
const char *options = luaL_optstring(L, arg+2, "flnSrtu");
checkstack(L, L1, 3);
luaL_argcheck(L, options[0] != '>', arg + 2, "invalid option '>'");
if (lua_isfunction(L, arg + 1)) { /* info about a function? */
options = lua_pushfstring(L, ">%s", options); /* add '>' to 'options' */
lua_pushvalue(L, arg + 1); /* move function to 'L1' stack */
lua_xmove(L, L1, 1);
}
else { /* stack level */
if (!lua_getstack(L1, (int)luaL_checkinteger(L, arg + 1), &ar)) {
luaL_pushfail(L); /* level out of range */
return 1;
}
}
if (!lua_getinfo(L1, options, &ar))
return luaL_argerror(L, arg+2, "invalid option");
lua_newtable(L); /* table to collect results */
if (strchr(options, 'S')) {
lua_pushlstring(L, ar.source, ar.srclen);
lua_setfield(L, -2, "source");
settabss(L, "short_src", ar.short_src);
settabsi(L, "linedefined", ar.linedefined);
settabsi(L, "lastlinedefined", ar.lastlinedefined);
settabss(L, "what", ar.what);
}
if (strchr(options, 'l'))
settabsi(L, "currentline", ar.currentline);
if (strchr(options, 'u')) {
settabsi(L, "nups", ar.nups);
settabsi(L, "nparams", ar.nparams);
settabsb(L, "isvararg", ar.isvararg);
}
if (strchr(options, 'n')) {
settabss(L, "name", ar.name);
settabss(L, "namewhat", ar.namewhat);
}
if (strchr(options, 'r')) {
settabsi(L, "ftransfer", ar.ftransfer);
settabsi(L, "ntransfer", ar.ntransfer);
}
if (strchr(options, 't'))
settabsb(L, "istailcall", ar.istailcall);
if (strchr(options, 'L'))
treatstackoption(L, L1, "activelines");
if (strchr(options, 'f'))
treatstackoption(L, L1, "func");
return 1; /* return table */
}
static int db_getlocal (lua_State *L) {
int arg;
lua_State *L1 = getthread(L, &arg);
int nvar = (int)luaL_checkinteger(L, arg + 2); /* local-variable index */
if (lua_isfunction(L, arg + 1)) { /* function argument? */
lua_pushvalue(L, arg + 1); /* push function */
lua_pushstring(L, lua_getlocal(L, NULL, nvar)); /* push local name */
return 1; /* return only name (there is no value) */
}
else { /* stack-level argument */
static int db_getinfo(lua_State *L) {
lua_Debug ar;
const char *name;
int level = (int)luaL_checkinteger(L, arg + 1);
if (l_unlikely(!lua_getstack(L1, level, &ar))) /* out of range? */
return luaL_argerror(L, arg+1, "level out of range");
checkstack(L, L1, 1);
name = lua_getlocal(L1, &ar, nvar);
if (name) {
lua_xmove(L1, L, 1); /* move local value */
lua_pushstring(L, name); /* push name */
lua_rotate(L, -2, 1); /* re-order */
return 2;
int arg;
lua_State *L1 = getthread(L, &arg);
const char *options = luaL_optstring(L, arg + 2, "flnSrtu");
checkstack(L, L1, 3);
luaL_argcheck(L, options[0] != '>', arg + 2, "invalid option '>'");
if (lua_isfunction(L, arg + 1)) { /* info about a function? */
options = lua_pushfstring(L, ">%s", options); /* add '>' to 'options' */
lua_pushvalue(L, arg + 1); /* move function to 'L1' stack */
lua_xmove(L, L1, 1);
} else { /* stack level */
if (!lua_getstack(L1, (int)luaL_checkinteger(L, arg + 1), &ar)) {
luaL_pushfail(L); /* level out of range */
return 1;
}
}
else {
luaL_pushfail(L); /* no name (nor value) */
return 1;
if (!lua_getinfo(L1, options, &ar))
return luaL_argerror(L, arg + 2, "invalid option");
lua_newtable(L); /* table to collect results */
if (strchr(options, 'S')) {
lua_pushlstring(L, ar.source, ar.srclen);
lua_setfield(L, -2, "source");
settabss(L, "short_src", ar.short_src);
settabsi(L, "linedefined", ar.linedefined);
settabsi(L, "lastlinedefined", ar.lastlinedefined);
settabss(L, "what", ar.what);
}
}
if (strchr(options, 'l'))
settabsi(L, "currentline", ar.currentline);
if (strchr(options, 'u')) {
settabsi(L, "nups", ar.nups);
settabsi(L, "nparams", ar.nparams);
settabsb(L, "isvararg", ar.isvararg);
}
if (strchr(options, 'n')) {
settabss(L, "name", ar.name);
settabss(L, "namewhat", ar.namewhat);
}
if (strchr(options, 'r')) {
settabsi(L, "ftransfer", ar.ftransfer);
settabsi(L, "ntransfer", ar.ntransfer);
}
if (strchr(options, 't'))
settabsb(L, "istailcall", ar.istailcall);
if (strchr(options, 'L'))
treatstackoption(L, L1, "activelines");
if (strchr(options, 'f'))
treatstackoption(L, L1, "func");
return 1; /* return table */
}
static int db_setlocal (lua_State *L) {
int arg;
const char *name;
lua_State *L1 = getthread(L, &arg);
lua_Debug ar;
int level = (int)luaL_checkinteger(L, arg + 1);
int nvar = (int)luaL_checkinteger(L, arg + 2);
if (l_unlikely(!lua_getstack(L1, level, &ar))) /* out of range? */
return luaL_argerror(L, arg+1, "level out of range");
luaL_checkany(L, arg+3);
lua_settop(L, arg+3);
checkstack(L, L1, 1);
lua_xmove(L, L1, 1);
name = lua_setlocal(L1, &ar, nvar);
if (name == NULL)
lua_pop(L1, 1); /* pop value (if not popped by 'lua_setlocal') */
lua_pushstring(L, name);
return 1;
static int db_getlocal(lua_State *L) {
int arg;
lua_State *L1 = getthread(L, &arg);
int nvar = (int)luaL_checkinteger(L, arg + 2); /* local-variable index */
if (lua_isfunction(L, arg + 1)) { /* function argument? */
lua_pushvalue(L, arg + 1); /* push function */
lua_pushstring(L, lua_getlocal(L, NULL, nvar)); /* push local name */
return 1; /* return only name (there is no value) */
} else { /* stack-level argument */
lua_Debug ar;
const char *name;
int level = (int)luaL_checkinteger(L, arg + 1);
if (l_unlikely(!lua_getstack(L1, level, &ar))) /* out of range? */
return luaL_argerror(L, arg + 1, "level out of range");
checkstack(L, L1, 1);
name = lua_getlocal(L1, &ar, nvar);
if (name) {
lua_xmove(L1, L, 1); /* move local value */
lua_pushstring(L, name); /* push name */
lua_rotate(L, -2, 1); /* re-order */
return 2;
} else {
luaL_pushfail(L); /* no name (nor value) */
return 1;
}
}
}
static int db_setlocal(lua_State *L) {
int arg;
const char *name;
lua_State *L1 = getthread(L, &arg);
lua_Debug ar;
int level = (int)luaL_checkinteger(L, arg + 1);
int nvar = (int)luaL_checkinteger(L, arg + 2);
if (l_unlikely(!lua_getstack(L1, level, &ar))) /* out of range? */
return luaL_argerror(L, arg + 1, "level out of range");
luaL_checkany(L, arg + 3);
lua_settop(L, arg + 3);
checkstack(L, L1, 1);
lua_xmove(L, L1, 1);
name = lua_setlocal(L1, &ar, nvar);
if (name == NULL)
lua_pop(L1, 1); /* pop value (if not popped by 'lua_setlocal') */
lua_pushstring(L, name);
return 1;
}
/*
** get (if 'get' is true) or set an upvalue from a closure
*/
static int auxupvalue (lua_State *L, int get) {
const char *name;
int n = (int)luaL_checkinteger(L, 2); /* upvalue index */
luaL_checktype(L, 1, LUA_TFUNCTION); /* closure */
name = get ? lua_getupvalue(L, 1, n) : lua_setupvalue(L, 1, n);
if (name == NULL) return 0;
lua_pushstring(L, name);
lua_insert(L, -(get+1)); /* no-op if get is false */
return get + 1;
static int auxupvalue(lua_State *L, int get) {
const char *name;
int n = (int)luaL_checkinteger(L, 2); /* upvalue index */
luaL_checktype(L, 1, LUA_TFUNCTION); /* closure */
name = get ? lua_getupvalue(L, 1, n) : lua_setupvalue(L, 1, n);
if (name == NULL) return 0;
lua_pushstring(L, name);
lua_insert(L, -(get + 1)); /* no-op if get is false */
return get + 1;
}
static int db_getupvalue (lua_State *L) {
return auxupvalue(L, 1);
static int db_getupvalue(lua_State *L) {
return auxupvalue(L, 1);
}
static int db_setupvalue (lua_State *L) {
luaL_checkany(L, 3);
return auxupvalue(L, 0);
static int db_setupvalue(lua_State *L) {
luaL_checkany(L, 3);
return auxupvalue(L, 0);
}
@ -282,37 +278,37 @@ static int db_setupvalue (lua_State *L) {
** Check whether a given upvalue from a given closure exists and
** returns its index
*/
static void *checkupval (lua_State *L, int argf, int argnup, int *pnup) {
void *id;
int nup = (int)luaL_checkinteger(L, argnup); /* upvalue index */
luaL_checktype(L, argf, LUA_TFUNCTION); /* closure */
id = lua_upvalueid(L, argf, nup);
if (pnup) {
luaL_argcheck(L, id != NULL, argnup, "invalid upvalue index");
*pnup = nup;
}
return id;
static void *checkupval(lua_State *L, int argf, int argnup, int *pnup) {
void *id;
int nup = (int)luaL_checkinteger(L, argnup); /* upvalue index */
luaL_checktype(L, argf, LUA_TFUNCTION); /* closure */
id = lua_upvalueid(L, argf, nup);
if (pnup) {
luaL_argcheck(L, id != NULL, argnup, "invalid upvalue index");
*pnup = nup;
}
return id;
}
static int db_upvalueid (lua_State *L) {
void *id = checkupval(L, 1, 2, NULL);
if (id != NULL)
lua_pushlightuserdata(L, id);
else
luaL_pushfail(L);
return 1;
static int db_upvalueid(lua_State *L) {
void *id = checkupval(L, 1, 2, NULL);
if (id != NULL)
lua_pushlightuserdata(L, id);
else
luaL_pushfail(L);
return 1;
}
static int db_upvaluejoin (lua_State *L) {
int n1, n2;
checkupval(L, 1, 2, &n1);
checkupval(L, 3, 4, &n2);
luaL_argcheck(L, !lua_iscfunction(L, 1), 1, "Lua function expected");
luaL_argcheck(L, !lua_iscfunction(L, 3), 3, "Lua function expected");
lua_upvaluejoin(L, 1, n1, 3, n2);
return 0;
static int db_upvaluejoin(lua_State *L) {
int n1, n2;
checkupval(L, 1, 2, &n1);
checkupval(L, 3, 4, &n2);
luaL_argcheck(L, !lua_iscfunction(L, 1), 1, "Lua function expected");
luaL_argcheck(L, !lua_iscfunction(L, 3), 3, "Lua function expected");
lua_upvaluejoin(L, 1, n1, 3, n2);
return 0;
}
@ -320,164 +316,167 @@ static int db_upvaluejoin (lua_State *L) {
** Call hook function registered at hook table for the current
** thread (if there is one)
*/
static void hookf (lua_State *L, lua_Debug *ar) {
static const char *const hooknames[] =
static void hookf(lua_State *L, lua_Debug *ar) {
static const char *const hooknames[] =
{"call", "return", "line", "count", "tail call"};
lua_getfield(L, LUA_REGISTRYINDEX, HOOKKEY);
lua_pushthread(L);
if (lua_rawget(L, -2) == LUA_TFUNCTION) { /* is there a hook function? */
lua_pushstring(L, hooknames[(int)ar->event]); /* push event name */
if (ar->currentline >= 0)
lua_pushinteger(L, ar->currentline); /* push current line */
else lua_pushnil(L);
lua_assert(lua_getinfo(L, "lS", ar));
lua_call(L, 2, 0); /* call hook function */
}
lua_getfield(L, LUA_REGISTRYINDEX, HOOKKEY);
lua_pushthread(L);
if (lua_rawget(L, -2) == LUA_TFUNCTION) { /* is there a hook function? */
lua_pushstring(L, hooknames[(int)ar->event]); /* push event name */
if (ar->currentline >= 0)
lua_pushinteger(L, ar->currentline); /* push current line */
else lua_pushnil(L);
lua_assert(lua_getinfo(L, "lS", ar));
lua_call(L, 2, 0); /* call hook function */
}
}
/*
** Convert a string mask (for 'sethook') into a bit mask
*/
static int makemask (const char *smask, int count) {
int mask = 0;
if (strchr(smask, 'c')) mask |= LUA_MASKCALL;
if (strchr(smask, 'r')) mask |= LUA_MASKRET;
if (strchr(smask, 'l')) mask |= LUA_MASKLINE;
if (count > 0) mask |= LUA_MASKCOUNT;
return mask;
static int makemask(const char *smask, int count) {
int mask = 0;
if (strchr(smask, 'c')) mask |= LUA_MASKCALL;
if (strchr(smask, 'r')) mask |= LUA_MASKRET;
if (strchr(smask, 'l')) mask |= LUA_MASKLINE;
if (count > 0) mask |= LUA_MASKCOUNT;
return mask;
}
/*
** Convert a bit mask (for 'gethook') into a string mask
*/
static char *unmakemask (int mask, char *smask) {
int i = 0;
if (mask & LUA_MASKCALL) smask[i++] = 'c';
if (mask & LUA_MASKRET) smask[i++] = 'r';
if (mask & LUA_MASKLINE) smask[i++] = 'l';
smask[i] = '\0';
return smask;
static char *unmakemask(int mask, char *smask) {
int i = 0;
if (mask & LUA_MASKCALL) smask[i++] = 'c';
if (mask & LUA_MASKRET) smask[i++] = 'r';
if (mask & LUA_MASKLINE) smask[i++] = 'l';
smask[i] = '\0';
return smask;
}
static int db_sethook (lua_State *L) {
int arg, mask, count;
lua_Hook func;
lua_State *L1 = getthread(L, &arg);
if (lua_isnoneornil(L, arg+1)) { /* no hook? */
lua_settop(L, arg+1);
func = NULL; mask = 0; count = 0; /* turn off hooks */
}
else {
const char *smask = luaL_checkstring(L, arg+2);
luaL_checktype(L, arg+1, LUA_TFUNCTION);
count = (int)luaL_optinteger(L, arg + 3, 0);
func = hookf; mask = makemask(smask, count);
}
if (!luaL_getsubtable(L, LUA_REGISTRYINDEX, HOOKKEY)) {
/* table just created; initialize it */
lua_pushliteral(L, "k");
lua_setfield(L, -2, "__mode"); /** hooktable.__mode = "k" */
lua_pushvalue(L, -1);
lua_setmetatable(L, -2); /* metatable(hooktable) = hooktable */
}
checkstack(L, L1, 1);
lua_pushthread(L1); lua_xmove(L1, L, 1); /* key (thread) */
lua_pushvalue(L, arg + 1); /* value (hook function) */
lua_rawset(L, -3); /* hooktable[L1] = new Lua hook */
lua_sethook(L1, func, mask, count);
return 0;
}
static int db_gethook (lua_State *L) {
int arg;
lua_State *L1 = getthread(L, &arg);
char buff[5];
int mask = lua_gethookmask(L1);
lua_Hook hook = lua_gethook(L1);
if (hook == NULL) { /* no hook? */
luaL_pushfail(L);
return 1;
}
else if (hook != hookf) /* external hook? */
lua_pushliteral(L, "external hook");
else { /* hook table must exist */
lua_getfield(L, LUA_REGISTRYINDEX, HOOKKEY);
static int db_sethook(lua_State *L) {
int arg, mask, count;
lua_Hook func;
lua_State *L1 = getthread(L, &arg);
if (lua_isnoneornil(L, arg + 1)) { /* no hook? */
lua_settop(L, arg + 1);
func = NULL;
mask = 0;
count = 0; /* turn off hooks */
} else {
const char *smask = luaL_checkstring(L, arg + 2);
luaL_checktype(L, arg + 1, LUA_TFUNCTION);
count = (int)luaL_optinteger(L, arg + 3, 0);
func = hookf;
mask = makemask(smask, count);
}
if (!luaL_getsubtable(L, LUA_REGISTRYINDEX, HOOKKEY)) {
/* table just created; initialize it */
lua_pushliteral(L, "k");
lua_setfield(L, -2, "__mode"); /** hooktable.__mode = "k" */
lua_pushvalue(L, -1);
lua_setmetatable(L, -2); /* metatable(hooktable) = hooktable */
}
checkstack(L, L1, 1);
lua_pushthread(L1); lua_xmove(L1, L, 1);
lua_rawget(L, -2); /* 1st result = hooktable[L1] */
lua_remove(L, -2); /* remove hook table */
}
lua_pushstring(L, unmakemask(mask, buff)); /* 2nd result = mask */
lua_pushinteger(L, lua_gethookcount(L1)); /* 3rd result = count */
return 3;
lua_pushthread(L1);
lua_xmove(L1, L, 1); /* key (thread) */
lua_pushvalue(L, arg + 1); /* value (hook function) */
lua_rawset(L, -3); /* hooktable[L1] = new Lua hook */
lua_sethook(L1, func, mask, count);
return 0;
}
static int db_debug (lua_State *L) {
for (;;) {
char buffer[250];
lua_writestringerror("%s", "lua_debug> ");
if (fgets(buffer, sizeof(buffer), stdin) == NULL ||
strcmp(buffer, "cont\n") == 0)
return 0;
if (luaL_loadbuffer(L, buffer, strlen(buffer), "=(debug command)") ||
lua_pcall(L, 0, 0, 0))
lua_writestringerror("%s\n", luaL_tolstring(L, -1, NULL));
lua_settop(L, 0); /* remove eventual returns */
}
static int db_gethook(lua_State *L) {
int arg;
lua_State *L1 = getthread(L, &arg);
char buff[5];
int mask = lua_gethookmask(L1);
lua_Hook hook = lua_gethook(L1);
if (hook == NULL) { /* no hook? */
luaL_pushfail(L);
return 1;
} else if (hook != hookf) /* external hook? */
lua_pushliteral(L, "external hook");
else { /* hook table must exist */
lua_getfield(L, LUA_REGISTRYINDEX, HOOKKEY);
checkstack(L, L1, 1);
lua_pushthread(L1);
lua_xmove(L1, L, 1);
lua_rawget(L, -2); /* 1st result = hooktable[L1] */
lua_remove(L, -2); /* remove hook table */
}
lua_pushstring(L, unmakemask(mask, buff)); /* 2nd result = mask */
lua_pushinteger(L, lua_gethookcount(L1)); /* 3rd result = count */
return 3;
}
static int db_traceback (lua_State *L) {
int arg;
lua_State *L1 = getthread(L, &arg);
const char *msg = lua_tostring(L, arg + 1);
if (msg == NULL && !lua_isnoneornil(L, arg + 1)) /* non-string 'msg'? */
lua_pushvalue(L, arg + 1); /* return it untouched */
else {
int level = (int)luaL_optinteger(L, arg + 2, (L == L1) ? 1 : 0);
luaL_traceback(L, L1, msg, level);
}
return 1;
static int db_debug(lua_State *L) {
for (;;) {
char buffer[250];
lua_writestringerror("%s", "lua_debug> ");
if (fgets(buffer, sizeof(buffer), stdin) == NULL ||
strcmp(buffer, "cont\n") == 0)
return 0;
if (luaL_loadbuffer(L, buffer, strlen(buffer), "=(debug command)") ||
lua_pcall(L, 0, 0, 0))
lua_writestringerror("%s\n", luaL_tolstring(L, -1, NULL));
lua_settop(L, 0); /* remove eventual returns */
}
}
static int db_setcstacklimit (lua_State *L) {
int limit = (int)luaL_checkinteger(L, 1);
int res = lua_setcstacklimit(L, limit);
lua_pushinteger(L, res);
return 1;
static int db_traceback(lua_State *L) {
int arg;
lua_State *L1 = getthread(L, &arg);
const char *msg = lua_tostring(L, arg + 1);
if (msg == NULL && !lua_isnoneornil(L, arg + 1)) /* non-string 'msg'? */
lua_pushvalue(L, arg + 1); /* return it untouched */
else {
int level = (int)luaL_optinteger(L, arg + 2, (L == L1) ? 1 : 0);
luaL_traceback(L, L1, msg, level);
}
return 1;
}
static int db_setcstacklimit(lua_State *L) {
int limit = (int)luaL_checkinteger(L, 1);
int res = lua_setcstacklimit(L, limit);
lua_pushinteger(L, res);
return 1;
}
static const luaL_Reg dblib[] = {
{"debug", db_debug},
{"getuservalue", db_getuservalue},
{"gethook", db_gethook},
{"getinfo", db_getinfo},
{"getlocal", db_getlocal},
{"getregistry", db_getregistry},
{"getmetatable", db_getmetatable},
{"getupvalue", db_getupvalue},
{"upvaluejoin", db_upvaluejoin},
{"upvalueid", db_upvalueid},
{"setuservalue", db_setuservalue},
{"sethook", db_sethook},
{"setlocal", db_setlocal},
{"setmetatable", db_setmetatable},
{"setupvalue", db_setupvalue},
{"traceback", db_traceback},
{"setcstacklimit", db_setcstacklimit},
{NULL, NULL}
{"debug", db_debug},
{"getuservalue", db_getuservalue},
{"gethook", db_gethook},
{"getinfo", db_getinfo},
{"getlocal", db_getlocal},
{"getregistry", db_getregistry},
{"getmetatable", db_getmetatable},
{"getupvalue", db_getupvalue},
{"upvaluejoin", db_upvaluejoin},
{"upvalueid", db_upvalueid},
{"setuservalue", db_setuservalue},
{"sethook", db_sethook},
{"setlocal", db_setlocal},
{"setmetatable", db_setmetatable},
{"setupvalue", db_setupvalue},
{"traceback", db_traceback},
{"setcstacklimit", db_setcstacklimit},
{NULL, NULL}
};
LUAMOD_API int luaopen_debug (lua_State *L) {
luaL_newlib(L, dblib);
return 1;
LUAMOD_API int luaopen_debug(lua_State *L) {
luaL_newlib(L, dblib);
return 1;
}

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@ -36,29 +36,29 @@
#endif
LUAI_FUNC int luaG_getfuncline (const Proto *f, int pc);
LUAI_FUNC const char *luaG_findlocal (lua_State *L, CallInfo *ci, int n,
StkId *pos);
LUAI_FUNC l_noret luaG_typeerror (lua_State *L, const TValue *o,
const char *opname);
LUAI_FUNC l_noret luaG_callerror (lua_State *L, const TValue *o);
LUAI_FUNC l_noret luaG_forerror (lua_State *L, const TValue *o,
const char *what);
LUAI_FUNC l_noret luaG_concaterror (lua_State *L, const TValue *p1,
const TValue *p2);
LUAI_FUNC l_noret luaG_opinterror (lua_State *L, const TValue *p1,
const TValue *p2,
const char *msg);
LUAI_FUNC l_noret luaG_tointerror (lua_State *L, const TValue *p1,
const TValue *p2);
LUAI_FUNC l_noret luaG_ordererror (lua_State *L, const TValue *p1,
const TValue *p2);
LUAI_FUNC l_noret luaG_runerror (lua_State *L, const char *fmt, ...);
LUAI_FUNC const char *luaG_addinfo (lua_State *L, const char *msg,
TString *src, int line);
LUAI_FUNC l_noret luaG_errormsg (lua_State *L);
LUAI_FUNC int luaG_traceexec (lua_State *L, const Instruction *pc);
LUAI_FUNC int luaG_tracecall (lua_State *L);
LUAI_FUNC int luaG_getfuncline(const Proto *f, int pc);
LUAI_FUNC const char *luaG_findlocal(lua_State *L, CallInfo *ci, int n,
StkId *pos);
LUAI_FUNC l_noret luaG_typeerror(lua_State *L, const TValue *o,
const char *opname);
LUAI_FUNC l_noret luaG_callerror(lua_State *L, const TValue *o);
LUAI_FUNC l_noret luaG_forerror(lua_State *L, const TValue *o,
const char *what);
LUAI_FUNC l_noret luaG_concaterror(lua_State *L, const TValue *p1,
const TValue *p2);
LUAI_FUNC l_noret luaG_opinterror(lua_State *L, const TValue *p1,
const TValue *p2,
const char *msg);
LUAI_FUNC l_noret luaG_tointerror(lua_State *L, const TValue *p1,
const TValue *p2);
LUAI_FUNC l_noret luaG_ordererror(lua_State *L, const TValue *p1,
const TValue *p2);
LUAI_FUNC l_noret luaG_runerror(lua_State *L, const char *fmt, ...);
LUAI_FUNC const char *luaG_addinfo(lua_State *L, const char *msg,
TString *src, int line);
LUAI_FUNC l_noret luaG_errormsg(lua_State *L);
LUAI_FUNC int luaG_traceexec(lua_State *L, const Instruction *pc);
LUAI_FUNC int luaG_tracecall(lua_State *L);
#endif

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@ -58,30 +58,30 @@
/* type of protected functions, to be ran by 'runprotected' */
typedef void (*Pfunc) (lua_State *L, void *ud);
typedef void (*Pfunc)(lua_State *L, void *ud);
LUAI_FUNC void luaD_seterrorobj (lua_State *L, int errcode, StkId oldtop);
LUAI_FUNC int luaD_protectedparser (lua_State *L, ZIO *z, const char *name,
const char *mode);
LUAI_FUNC void luaD_hook (lua_State *L, int event, int line,
int fTransfer, int nTransfer);
LUAI_FUNC void luaD_hookcall (lua_State *L, CallInfo *ci);
LUAI_FUNC int luaD_pretailcall (lua_State *L, CallInfo *ci, StkId func,
int narg1, int delta);
LUAI_FUNC CallInfo *luaD_precall (lua_State *L, StkId func, int nResults);
LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults);
LUAI_FUNC void luaD_callnoyield (lua_State *L, StkId func, int nResults);
LUAI_FUNC int luaD_closeprotected (lua_State *L, ptrdiff_t level, int status);
LUAI_FUNC int luaD_pcall (lua_State *L, Pfunc func, void *u,
ptrdiff_t oldtop, ptrdiff_t ef);
LUAI_FUNC void luaD_poscall (lua_State *L, CallInfo *ci, int nres);
LUAI_FUNC int luaD_reallocstack (lua_State *L, int newsize, int raiseerror);
LUAI_FUNC int luaD_growstack (lua_State *L, int n, int raiseerror);
LUAI_FUNC void luaD_shrinkstack (lua_State *L);
LUAI_FUNC void luaD_inctop (lua_State *L);
LUAI_FUNC void luaD_seterrorobj(lua_State *L, int errcode, StkId oldtop);
LUAI_FUNC int luaD_protectedparser(lua_State *L, ZIO *z, const char *name,
const char *mode);
LUAI_FUNC void luaD_hook(lua_State *L, int event, int line,
int fTransfer, int nTransfer);
LUAI_FUNC void luaD_hookcall(lua_State *L, CallInfo *ci);
LUAI_FUNC int luaD_pretailcall(lua_State *L, CallInfo *ci, StkId func,
int narg1, int delta);
LUAI_FUNC CallInfo *luaD_precall(lua_State *L, StkId func, int nResults);
LUAI_FUNC void luaD_call(lua_State *L, StkId func, int nResults);
LUAI_FUNC void luaD_callnoyield(lua_State *L, StkId func, int nResults);
LUAI_FUNC int luaD_closeprotected(lua_State *L, ptrdiff_t level, int status);
LUAI_FUNC int luaD_pcall(lua_State *L, Pfunc func, void *u,
ptrdiff_t oldtop, ptrdiff_t ef);
LUAI_FUNC void luaD_poscall(lua_State *L, CallInfo *ci, int nres);
LUAI_FUNC int luaD_reallocstack(lua_State *L, int newsize, int raiseerror);
LUAI_FUNC int luaD_growstack(lua_State *L, int n, int raiseerror);
LUAI_FUNC void luaD_shrinkstack(lua_State *L);
LUAI_FUNC void luaD_inctop(lua_State *L);
LUAI_FUNC l_noret luaD_throw (lua_State *L, int errcode);
LUAI_FUNC int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud);
LUAI_FUNC l_noret luaD_throw(lua_State *L, int errcode);
LUAI_FUNC int luaD_rawrunprotected(lua_State *L, Pfunc f, void *ud);
#endif

View file

@ -21,11 +21,11 @@
typedef struct {
lua_State *L;
lua_Writer writer;
void *data;
int strip;
int status;
lua_State *L;
lua_Writer writer;
void *data;
int strip;
int status;
} DumpState;
@ -38,21 +38,21 @@ typedef struct {
#define dumpLiteral(D, s) dumpBlock(D,s,sizeof(s) - sizeof(char))
static void dumpBlock (DumpState *D, const void *b, size_t size) {
if (D->status == 0 && size > 0) {
lua_unlock(D->L);
D->status = (*D->writer)(D->L, b, size, D->data);
lua_lock(D->L);
}
static void dumpBlock(DumpState *D, const void *b, size_t size) {
if (D->status == 0 && size > 0) {
lua_unlock(D->L);
D->status = (*D->writer)(D->L, b, size, D->data);
lua_lock(D->L);
}
}
#define dumpVar(D,x) dumpVector(D,&x,1)
static void dumpByte (DumpState *D, int y) {
lu_byte x = (lu_byte)y;
dumpVar(D, x);
static void dumpByte(DumpState *D, int y) {
lu_byte x = (lu_byte)y;
dumpVar(D, x);
}
@ -62,152 +62,152 @@ static void dumpByte (DumpState *D, int y) {
*/
#define DIBS ((sizeof(size_t) * CHAR_BIT + 6) / 7)
static void dumpSize (DumpState *D, size_t x) {
lu_byte buff[DIBS];
int n = 0;
do {
buff[DIBS - (++n)] = x & 0x7f; /* fill buffer in reverse order */
x >>= 7;
} while (x != 0);
buff[DIBS - 1] |= 0x80; /* mark last byte */
dumpVector(D, buff + DIBS - n, n);
static void dumpSize(DumpState *D, size_t x) {
lu_byte buff[DIBS];
int n = 0;
do {
buff[DIBS - (++n)] = x & 0x7f; /* fill buffer in reverse order */
x >>= 7;
} while (x != 0);
buff[DIBS - 1] |= 0x80; /* mark last byte */
dumpVector(D, buff + DIBS - n, n);
}
static void dumpInt (DumpState *D, int x) {
dumpSize(D, x);
static void dumpInt(DumpState *D, int x) {
dumpSize(D, x);
}
static void dumpNumber (DumpState *D, lua_Number x) {
dumpVar(D, x);
static void dumpNumber(DumpState *D, lua_Number x) {
dumpVar(D, x);
}
static void dumpInteger (DumpState *D, lua_Integer x) {
dumpVar(D, x);
static void dumpInteger(DumpState *D, lua_Integer x) {
dumpVar(D, x);
}
static void dumpString (DumpState *D, const TString *s) {
if (s == NULL)
dumpSize(D, 0);
else {
size_t size = tsslen(s);
const char *str = getstr(s);
dumpSize(D, size + 1);
dumpVector(D, str, size);
}
static void dumpString(DumpState *D, const TString *s) {
if (s == NULL)
dumpSize(D, 0);
else {
size_t size = tsslen(s);
const char *str = getstr(s);
dumpSize(D, size + 1);
dumpVector(D, str, size);
}
}
static void dumpCode (DumpState *D, const Proto *f) {
dumpInt(D, f->sizecode);
dumpVector(D, f->code, f->sizecode);
static void dumpCode(DumpState *D, const Proto *f) {
dumpInt(D, f->sizecode);
dumpVector(D, f->code, f->sizecode);
}
static void dumpFunction(DumpState *D, const Proto *f, TString *psource);
static void dumpConstants (DumpState *D, const Proto *f) {
int i;
int n = f->sizek;
dumpInt(D, n);
for (i = 0; i < n; i++) {
const TValue *o = &f->k[i];
int tt = ttypetag(o);
dumpByte(D, tt);
switch (tt) {
case LUA_VNUMFLT:
dumpNumber(D, fltvalue(o));
break;
case LUA_VNUMINT:
dumpInteger(D, ivalue(o));
break;
case LUA_VSHRSTR:
case LUA_VLNGSTR:
dumpString(D, tsvalue(o));
break;
default:
lua_assert(tt == LUA_VNIL || tt == LUA_VFALSE || tt == LUA_VTRUE);
static void dumpConstants(DumpState *D, const Proto *f) {
int i;
int n = f->sizek;
dumpInt(D, n);
for (i = 0; i < n; i++) {
const TValue *o = &f->k[i];
int tt = ttypetag(o);
dumpByte(D, tt);
switch (tt) {
case LUA_VNUMFLT:
dumpNumber(D, fltvalue(o));
break;
case LUA_VNUMINT:
dumpInteger(D, ivalue(o));
break;
case LUA_VSHRSTR:
case LUA_VLNGSTR:
dumpString(D, tsvalue(o));
break;
default:
lua_assert(tt == LUA_VNIL || tt == LUA_VFALSE || tt == LUA_VTRUE);
}
}
}
}
static void dumpProtos (DumpState *D, const Proto *f) {
int i;
int n = f->sizep;
dumpInt(D, n);
for (i = 0; i < n; i++)
dumpFunction(D, f->p[i], f->source);
static void dumpProtos(DumpState *D, const Proto *f) {
int i;
int n = f->sizep;
dumpInt(D, n);
for (i = 0; i < n; i++)
dumpFunction(D, f->p[i], f->source);
}
static void dumpUpvalues (DumpState *D, const Proto *f) {
int i, n = f->sizeupvalues;
dumpInt(D, n);
for (i = 0; i < n; i++) {
dumpByte(D, f->upvalues[i].instack);
dumpByte(D, f->upvalues[i].idx);
dumpByte(D, f->upvalues[i].kind);
}
static void dumpUpvalues(DumpState *D, const Proto *f) {
int i, n = f->sizeupvalues;
dumpInt(D, n);
for (i = 0; i < n; i++) {
dumpByte(D, f->upvalues[i].instack);
dumpByte(D, f->upvalues[i].idx);
dumpByte(D, f->upvalues[i].kind);
}
}
static void dumpDebug (DumpState *D, const Proto *f) {
int i, n;
n = (D->strip) ? 0 : f->sizelineinfo;
dumpInt(D, n);
dumpVector(D, f->lineinfo, n);
n = (D->strip) ? 0 : f->sizeabslineinfo;
dumpInt(D, n);
for (i = 0; i < n; i++) {
dumpInt(D, f->abslineinfo[i].pc);
dumpInt(D, f->abslineinfo[i].line);
}
n = (D->strip) ? 0 : f->sizelocvars;
dumpInt(D, n);
for (i = 0; i < n; i++) {
dumpString(D, f->locvars[i].varname);
dumpInt(D, f->locvars[i].startpc);
dumpInt(D, f->locvars[i].endpc);
}
n = (D->strip) ? 0 : f->sizeupvalues;
dumpInt(D, n);
for (i = 0; i < n; i++)
dumpString(D, f->upvalues[i].name);
static void dumpDebug(DumpState *D, const Proto *f) {
int i, n;
n = (D->strip) ? 0 : f->sizelineinfo;
dumpInt(D, n);
dumpVector(D, f->lineinfo, n);
n = (D->strip) ? 0 : f->sizeabslineinfo;
dumpInt(D, n);
for (i = 0; i < n; i++) {
dumpInt(D, f->abslineinfo[i].pc);
dumpInt(D, f->abslineinfo[i].line);
}
n = (D->strip) ? 0 : f->sizelocvars;
dumpInt(D, n);
for (i = 0; i < n; i++) {
dumpString(D, f->locvars[i].varname);
dumpInt(D, f->locvars[i].startpc);
dumpInt(D, f->locvars[i].endpc);
}
n = (D->strip) ? 0 : f->sizeupvalues;
dumpInt(D, n);
for (i = 0; i < n; i++)
dumpString(D, f->upvalues[i].name);
}
static void dumpFunction (DumpState *D, const Proto *f, TString *psource) {
if (D->strip || f->source == psource)
dumpString(D, NULL); /* no debug info or same source as its parent */
else
dumpString(D, f->source);
dumpInt(D, f->linedefined);
dumpInt(D, f->lastlinedefined);
dumpByte(D, f->numparams);
dumpByte(D, f->is_vararg);
dumpByte(D, f->maxstacksize);
dumpCode(D, f);
dumpConstants(D, f);
dumpUpvalues(D, f);
dumpProtos(D, f);
dumpDebug(D, f);
static void dumpFunction(DumpState *D, const Proto *f, TString *psource) {
if (D->strip || f->source == psource)
dumpString(D, NULL); /* no debug info or same source as its parent */
else
dumpString(D, f->source);
dumpInt(D, f->linedefined);
dumpInt(D, f->lastlinedefined);
dumpByte(D, f->numparams);
dumpByte(D, f->is_vararg);
dumpByte(D, f->maxstacksize);
dumpCode(D, f);
dumpConstants(D, f);
dumpUpvalues(D, f);
dumpProtos(D, f);
dumpDebug(D, f);
}
static void dumpHeader (DumpState *D) {
dumpLiteral(D, LUA_SIGNATURE);
dumpByte(D, LUAC_VERSION);
dumpByte(D, LUAC_FORMAT);
dumpLiteral(D, LUAC_DATA);
dumpByte(D, sizeof(Instruction));
dumpByte(D, sizeof(lua_Integer));
dumpByte(D, sizeof(lua_Number));
dumpInteger(D, LUAC_INT);
dumpNumber(D, LUAC_NUM);
static void dumpHeader(DumpState *D) {
dumpLiteral(D, LUA_SIGNATURE);
dumpByte(D, LUAC_VERSION);
dumpByte(D, LUAC_FORMAT);
dumpLiteral(D, LUAC_DATA);
dumpByte(D, sizeof(Instruction));
dumpByte(D, sizeof(lua_Integer));
dumpByte(D, sizeof(lua_Number));
dumpInteger(D, LUAC_INT);
dumpNumber(D, LUAC_NUM);
}
@ -216,15 +216,15 @@ static void dumpHeader (DumpState *D) {
*/
int luaU_dump(lua_State *L, const Proto *f, lua_Writer w, void *data,
int strip) {
DumpState D;
D.L = L;
D.writer = w;
D.data = data;
D.strip = strip;
D.status = 0;
dumpHeader(&D);
dumpByte(&D, f->sizeupvalues);
dumpFunction(&D, f, NULL);
return D.status;
DumpState D;
D.L = L;
D.writer = w;
D.data = data;
D.strip = strip;
D.status = 0;
dumpHeader(&D);
dumpByte(&D, f->sizeupvalues);
dumpFunction(&D, f, NULL);
return D.status;
}

View file

@ -24,37 +24,37 @@
CClosure *luaF_newCclosure (lua_State *L, int nupvals) {
GCObject *o = luaC_newobj(L, LUA_VCCL, sizeCclosure(nupvals));
CClosure *c = gco2ccl(o);
c->nupvalues = cast_byte(nupvals);
return c;
CClosure *luaF_newCclosure(lua_State *L, int nupvals) {
GCObject *o = luaC_newobj(L, LUA_VCCL, sizeCclosure(nupvals));
CClosure *c = gco2ccl(o);
c->nupvalues = cast_byte(nupvals);
return c;
}
LClosure *luaF_newLclosure (lua_State *L, int nupvals) {
GCObject *o = luaC_newobj(L, LUA_VLCL, sizeLclosure(nupvals));
LClosure *c = gco2lcl(o);
c->p = NULL;
c->nupvalues = cast_byte(nupvals);
while (nupvals--) c->upvals[nupvals] = NULL;
return c;
LClosure *luaF_newLclosure(lua_State *L, int nupvals) {
GCObject *o = luaC_newobj(L, LUA_VLCL, sizeLclosure(nupvals));
LClosure *c = gco2lcl(o);
c->p = NULL;
c->nupvalues = cast_byte(nupvals);
while (nupvals--) c->upvals[nupvals] = NULL;
return c;
}
/*
** fill a closure with new closed upvalues
*/
void luaF_initupvals (lua_State *L, LClosure *cl) {
int i;
for (i = 0; i < cl->nupvalues; i++) {
GCObject *o = luaC_newobj(L, LUA_VUPVAL, sizeof(UpVal));
UpVal *uv = gco2upv(o);
uv->v.p = &uv->u.value; /* make it closed */
setnilvalue(uv->v.p);
cl->upvals[i] = uv;
luaC_objbarrier(L, cl, uv);
}
void luaF_initupvals(lua_State *L, LClosure *cl) {
int i;
for (i = 0; i < cl->nupvalues; i++) {
GCObject *o = luaC_newobj(L, LUA_VUPVAL, sizeof(UpVal));
UpVal *uv = gco2upv(o);
uv->v.p = &uv->u.value; /* make it closed */
setnilvalue(uv->v.p);
cl->upvals[i] = uv;
luaC_objbarrier(L, cl, uv);
}
}
@ -62,21 +62,21 @@ void luaF_initupvals (lua_State *L, LClosure *cl) {
** Create a new upvalue at the given level, and link it to the list of
** open upvalues of 'L' after entry 'prev'.
**/
static UpVal *newupval (lua_State *L, StkId level, UpVal **prev) {
GCObject *o = luaC_newobj(L, LUA_VUPVAL, sizeof(UpVal));
UpVal *uv = gco2upv(o);
UpVal *next = *prev;
uv->v.p = s2v(level); /* current value lives in the stack */
uv->u.open.next = next; /* link it to list of open upvalues */
uv->u.open.previous = prev;
if (next)
next->u.open.previous = &uv->u.open.next;
*prev = uv;
if (!isintwups(L)) { /* thread not in list of threads with upvalues? */
L->twups = G(L)->twups; /* link it to the list */
G(L)->twups = L;
}
return uv;
static UpVal *newupval(lua_State *L, StkId level, UpVal **prev) {
GCObject *o = luaC_newobj(L, LUA_VUPVAL, sizeof(UpVal));
UpVal *uv = gco2upv(o);
UpVal *next = *prev;
uv->v.p = s2v(level); /* current value lives in the stack */
uv->u.open.next = next; /* link it to list of open upvalues */
uv->u.open.previous = prev;
if (next)
next->u.open.previous = &uv->u.open.next;
*prev = uv;
if (!isintwups(L)) { /* thread not in list of threads with upvalues? */
L->twups = G(L)->twups; /* link it to the list */
G(L)->twups = L;
}
return uv;
}
@ -84,18 +84,18 @@ static UpVal *newupval (lua_State *L, StkId level, UpVal **prev) {
** Find and reuse, or create if it does not exist, an upvalue
** at the given level.
*/
UpVal *luaF_findupval (lua_State *L, StkId level) {
UpVal **pp = &L->openupval;
UpVal *p;
lua_assert(isintwups(L) || L->openupval == NULL);
while ((p = *pp) != NULL && uplevel(p) >= level) { /* search for it */
lua_assert(!isdead(G(L), p));
if (uplevel(p) == level) /* corresponding upvalue? */
return p; /* return it */
pp = &p->u.open.next;
}
/* not found: create a new upvalue after 'pp' */
return newupval(L, level, pp);
UpVal *luaF_findupval(lua_State *L, StkId level) {
UpVal **pp = &L->openupval;
UpVal *p;
lua_assert(isintwups(L) || L->openupval == NULL);
while ((p = *pp) != NULL && uplevel(p) >= level) { /* search for it */
lua_assert(!isdead(G(L), p));
if (uplevel(p) == level) /* corresponding upvalue? */
return p; /* return it */
pp = &p->u.open.next;
}
/* not found: create a new upvalue after 'pp' */
return newupval(L, level, pp);
}
@ -104,17 +104,17 @@ UpVal *luaF_findupval (lua_State *L, StkId level) {
** boolean 'yy' controls whether the call is yieldable.
** (This function assumes EXTRA_STACK.)
*/
static void callclosemethod (lua_State *L, TValue *obj, TValue *err, int yy) {
StkId top = L->top.p;
const TValue *tm = luaT_gettmbyobj(L, obj, TM_CLOSE);
setobj2s(L, top, tm); /* will call metamethod... */
setobj2s(L, top + 1, obj); /* with 'self' as the 1st argument */
setobj2s(L, top + 2, err); /* and error msg. as 2nd argument */
L->top.p = top + 3; /* add function and arguments */
if (yy)
luaD_call(L, top, 0);
else
luaD_callnoyield(L, top, 0);
static void callclosemethod(lua_State *L, TValue *obj, TValue *err, int yy) {
StkId top = L->top.p;
const TValue *tm = luaT_gettmbyobj(L, obj, TM_CLOSE);
setobj2s(L, top, tm); /* will call metamethod... */
setobj2s(L, top + 1, obj); /* with 'self' as the 1st argument */
setobj2s(L, top + 2, err); /* and error msg. as 2nd argument */
L->top.p = top + 3; /* add function and arguments */
if (yy)
luaD_call(L, top, 0);
else
luaD_callnoyield(L, top, 0);
}
@ -122,14 +122,14 @@ static void callclosemethod (lua_State *L, TValue *obj, TValue *err, int yy) {
** Check whether object at given level has a close metamethod and raise
** an error if not.
*/
static void checkclosemth (lua_State *L, StkId level) {
const TValue *tm = luaT_gettmbyobj(L, s2v(level), TM_CLOSE);
if (ttisnil(tm)) { /* no metamethod? */
int idx = cast_int(level - L->ci->func.p); /* variable index */
const char *vname = luaG_findlocal(L, L->ci, idx, NULL);
if (vname == NULL) vname = "?";
luaG_runerror(L, "variable '%s' got a non-closable value", vname);
}
static void checkclosemth(lua_State *L, StkId level) {
const TValue *tm = luaT_gettmbyobj(L, s2v(level), TM_CLOSE);
if (ttisnil(tm)) { /* no metamethod? */
int idx = cast_int(level - L->ci->func.p); /* variable index */
const char *vname = luaG_findlocal(L, L->ci, idx, NULL);
if (vname == NULL) vname = "?";
luaG_runerror(L, "variable '%s' got a non-closable value", vname);
}
}
@ -140,16 +140,16 @@ static void checkclosemth (lua_State *L, StkId level) {
** the 'level' of the upvalue being closed, as everything after that
** won't be used again.
*/
static void prepcallclosemth (lua_State *L, StkId level, int status, int yy) {
TValue *uv = s2v(level); /* value being closed */
TValue *errobj;
if (status == CLOSEKTOP)
errobj = &G(L)->nilvalue; /* error object is nil */
else { /* 'luaD_seterrorobj' will set top to level + 2 */
errobj = s2v(level + 1); /* error object goes after 'uv' */
luaD_seterrorobj(L, status, level + 1); /* set error object */
}
callclosemethod(L, uv, errobj, yy);
static void prepcallclosemth(lua_State *L, StkId level, int status, int yy) {
TValue *uv = s2v(level); /* value being closed */
TValue *errobj;
if (status == CLOSEKTOP)
errobj = &G(L)->nilvalue; /* error object is nil */
else { /* 'luaD_seterrorobj' will set top to level + 2 */
errobj = s2v(level + 1); /* error object goes after 'uv' */
luaD_seterrorobj(L, status, level + 1); /* set error object */
}
callclosemethod(L, uv, errobj, yy);
}
@ -165,58 +165,58 @@ static void prepcallclosemth (lua_State *L, StkId level, int status, int yy) {
/*
** Insert a variable in the list of to-be-closed variables.
*/
void luaF_newtbcupval (lua_State *L, StkId level) {
lua_assert(level > L->tbclist.p);
if (l_isfalse(s2v(level)))
return; /* false doesn't need to be closed */
checkclosemth(L, level); /* value must have a close method */
while (cast_uint(level - L->tbclist.p) > MAXDELTA) {
L->tbclist.p += MAXDELTA; /* create a dummy node at maximum delta */
L->tbclist.p->tbclist.delta = 0;
}
level->tbclist.delta = cast(unsigned short, level - L->tbclist.p);
L->tbclist.p = level;
void luaF_newtbcupval(lua_State *L, StkId level) {
lua_assert(level > L->tbclist.p);
if (l_isfalse(s2v(level)))
return; /* false doesn't need to be closed */
checkclosemth(L, level); /* value must have a close method */
while (cast_uint(level - L->tbclist.p) > MAXDELTA) {
L->tbclist.p += MAXDELTA; /* create a dummy node at maximum delta */
L->tbclist.p->tbclist.delta = 0;
}
level->tbclist.delta = cast(unsigned short, level - L->tbclist.p);
L->tbclist.p = level;
}
void luaF_unlinkupval (UpVal *uv) {
lua_assert(upisopen(uv));
*uv->u.open.previous = uv->u.open.next;
if (uv->u.open.next)
uv->u.open.next->u.open.previous = uv->u.open.previous;
void luaF_unlinkupval(UpVal *uv) {
lua_assert(upisopen(uv));
*uv->u.open.previous = uv->u.open.next;
if (uv->u.open.next)
uv->u.open.next->u.open.previous = uv->u.open.previous;
}
/*
** Close all upvalues up to the given stack level.
*/
void luaF_closeupval (lua_State *L, StkId level) {
UpVal *uv;
StkId upl; /* stack index pointed by 'uv' */
while ((uv = L->openupval) != NULL && (upl = uplevel(uv)) >= level) {
TValue *slot = &uv->u.value; /* new position for value */
lua_assert(uplevel(uv) < L->top.p);
luaF_unlinkupval(uv); /* remove upvalue from 'openupval' list */
setobj(L, slot, uv->v.p); /* move value to upvalue slot */
uv->v.p = slot; /* now current value lives here */
if (!iswhite(uv)) { /* neither white nor dead? */
nw2black(uv); /* closed upvalues cannot be gray */
luaC_barrier(L, uv, slot);
void luaF_closeupval(lua_State *L, StkId level) {
UpVal *uv;
StkId upl; /* stack index pointed by 'uv' */
while ((uv = L->openupval) != NULL && (upl = uplevel(uv)) >= level) {
TValue *slot = &uv->u.value; /* new position for value */
lua_assert(uplevel(uv) < L->top.p);
luaF_unlinkupval(uv); /* remove upvalue from 'openupval' list */
setobj(L, slot, uv->v.p); /* move value to upvalue slot */
uv->v.p = slot; /* now current value lives here */
if (!iswhite(uv)) { /* neither white nor dead? */
nw2black(uv); /* closed upvalues cannot be gray */
luaC_barrier(L, uv, slot);
}
}
}
}
/*
** Remove first element from the tbclist plus its dummy nodes.
*/
static void poptbclist (lua_State *L) {
StkId tbc = L->tbclist.p;
lua_assert(tbc->tbclist.delta > 0); /* first element cannot be dummy */
tbc -= tbc->tbclist.delta;
while (tbc > L->stack.p && tbc->tbclist.delta == 0)
tbc -= MAXDELTA; /* remove dummy nodes */
L->tbclist.p = tbc;
static void poptbclist(lua_State *L) {
StkId tbc = L->tbclist.p;
lua_assert(tbc->tbclist.delta > 0); /* first element cannot be dummy */
tbc -= tbc->tbclist.delta;
while (tbc > L->stack.p && tbc->tbclist.delta == 0)
tbc -= MAXDELTA; /* remove dummy nodes */
L->tbclist.p = tbc;
}
@ -224,55 +224,55 @@ static void poptbclist (lua_State *L) {
** Close all upvalues and to-be-closed variables up to the given stack
** level. Return restored 'level'.
*/
StkId luaF_close (lua_State *L, StkId level, int status, int yy) {
ptrdiff_t levelrel = savestack(L, level);
luaF_closeupval(L, level); /* first, close the upvalues */
while (L->tbclist.p >= level) { /* traverse tbc's down to that level */
StkId tbc = L->tbclist.p; /* get variable index */
poptbclist(L); /* remove it from list */
prepcallclosemth(L, tbc, status, yy); /* close variable */
level = restorestack(L, levelrel);
}
return level;
StkId luaF_close(lua_State *L, StkId level, int status, int yy) {
ptrdiff_t levelrel = savestack(L, level);
luaF_closeupval(L, level); /* first, close the upvalues */
while (L->tbclist.p >= level) { /* traverse tbc's down to that level */
StkId tbc = L->tbclist.p; /* get variable index */
poptbclist(L); /* remove it from list */
prepcallclosemth(L, tbc, status, yy); /* close variable */
level = restorestack(L, levelrel);
}
return level;
}
Proto *luaF_newproto (lua_State *L) {
GCObject *o = luaC_newobj(L, LUA_VPROTO, sizeof(Proto));
Proto *f = gco2p(o);
f->k = NULL;
f->sizek = 0;
f->p = NULL;
f->sizep = 0;
f->code = NULL;
f->sizecode = 0;
f->lineinfo = NULL;
f->sizelineinfo = 0;
f->abslineinfo = NULL;
f->sizeabslineinfo = 0;
f->upvalues = NULL;
f->sizeupvalues = 0;
f->numparams = 0;
f->is_vararg = 0;
f->maxstacksize = 0;
f->locvars = NULL;
f->sizelocvars = 0;
f->linedefined = 0;
f->lastlinedefined = 0;
f->source = NULL;
return f;
Proto *luaF_newproto(lua_State *L) {
GCObject *o = luaC_newobj(L, LUA_VPROTO, sizeof(Proto));
Proto *f = gco2p(o);
f->k = NULL;
f->sizek = 0;
f->p = NULL;
f->sizep = 0;
f->code = NULL;
f->sizecode = 0;
f->lineinfo = NULL;
f->sizelineinfo = 0;
f->abslineinfo = NULL;
f->sizeabslineinfo = 0;
f->upvalues = NULL;
f->sizeupvalues = 0;
f->numparams = 0;
f->is_vararg = 0;
f->maxstacksize = 0;
f->locvars = NULL;
f->sizelocvars = 0;
f->linedefined = 0;
f->lastlinedefined = 0;
f->source = NULL;
return f;
}
void luaF_freeproto (lua_State *L, Proto *f) {
luaM_freearray(L, f->code, f->sizecode);
luaM_freearray(L, f->p, f->sizep);
luaM_freearray(L, f->k, f->sizek);
luaM_freearray(L, f->lineinfo, f->sizelineinfo);
luaM_freearray(L, f->abslineinfo, f->sizeabslineinfo);
luaM_freearray(L, f->locvars, f->sizelocvars);
luaM_freearray(L, f->upvalues, f->sizeupvalues);
luaM_free(L, f);
void luaF_freeproto(lua_State *L, Proto *f) {
luaM_freearray(L, f->code, f->sizecode);
luaM_freearray(L, f->p, f->sizep);
luaM_freearray(L, f->k, f->sizek);
luaM_freearray(L, f->lineinfo, f->sizelineinfo);
luaM_freearray(L, f->abslineinfo, f->sizeabslineinfo);
luaM_freearray(L, f->locvars, f->sizelocvars);
luaM_freearray(L, f->upvalues, f->sizeupvalues);
luaM_free(L, f);
}
@ -280,15 +280,15 @@ void luaF_freeproto (lua_State *L, Proto *f) {
** Look for n-th local variable at line 'line' in function 'func'.
** Returns NULL if not found.
*/
const char *luaF_getlocalname (const Proto *f, int local_number, int pc) {
int i;
for (i = 0; i<f->sizelocvars && f->locvars[i].startpc <= pc; i++) {
if (pc < f->locvars[i].endpc) { /* is variable active? */
local_number--;
if (local_number == 0)
return getstr(f->locvars[i].varname);
const char *luaF_getlocalname(const Proto *f, int local_number, int pc) {
int i;
for (i = 0; i < f->sizelocvars && f->locvars[i].startpc <= pc; i++) {
if (pc < f->locvars[i].endpc) { /* is variable active? */
local_number--;
if (local_number == 0)
return getstr(f->locvars[i].varname);
}
}
}
return NULL; /* not found */
return NULL; /* not found */
}

View file

@ -47,18 +47,18 @@
#define CLOSEKTOP (-1)
LUAI_FUNC Proto *luaF_newproto (lua_State *L);
LUAI_FUNC CClosure *luaF_newCclosure (lua_State *L, int nupvals);
LUAI_FUNC LClosure *luaF_newLclosure (lua_State *L, int nupvals);
LUAI_FUNC void luaF_initupvals (lua_State *L, LClosure *cl);
LUAI_FUNC UpVal *luaF_findupval (lua_State *L, StkId level);
LUAI_FUNC void luaF_newtbcupval (lua_State *L, StkId level);
LUAI_FUNC void luaF_closeupval (lua_State *L, StkId level);
LUAI_FUNC StkId luaF_close (lua_State *L, StkId level, int status, int yy);
LUAI_FUNC void luaF_unlinkupval (UpVal *uv);
LUAI_FUNC void luaF_freeproto (lua_State *L, Proto *f);
LUAI_FUNC const char *luaF_getlocalname (const Proto *func, int local_number,
int pc);
LUAI_FUNC Proto *luaF_newproto(lua_State *L);
LUAI_FUNC CClosure *luaF_newCclosure(lua_State *L, int nupvals);
LUAI_FUNC LClosure *luaF_newLclosure(lua_State *L, int nupvals);
LUAI_FUNC void luaF_initupvals(lua_State *L, LClosure *cl);
LUAI_FUNC UpVal *luaF_findupval(lua_State *L, StkId level);
LUAI_FUNC void luaF_newtbcupval(lua_State *L, StkId level);
LUAI_FUNC void luaF_closeupval(lua_State *L, StkId level);
LUAI_FUNC StkId luaF_close(lua_State *L, StkId level, int status, int yy);
LUAI_FUNC void luaF_unlinkupval(UpVal *uv);
LUAI_FUNC void luaF_freeproto(lua_State *L, Proto *f);
LUAI_FUNC const char *luaF_getlocalname(const Proto *func, int local_number,
int pc);
#endif

File diff suppressed because it is too large Load diff

View file

@ -185,18 +185,18 @@
#define luaC_barrierback(L,p,v) ( \
iscollectable(v) ? luaC_objbarrierback(L, p, gcvalue(v)) : cast_void(0))
LUAI_FUNC void luaC_fix (lua_State *L, GCObject *o);
LUAI_FUNC void luaC_freeallobjects (lua_State *L);
LUAI_FUNC void luaC_step (lua_State *L);
LUAI_FUNC void luaC_runtilstate (lua_State *L, int statesmask);
LUAI_FUNC void luaC_fullgc (lua_State *L, int isemergency);
LUAI_FUNC GCObject *luaC_newobj (lua_State *L, int tt, size_t sz);
LUAI_FUNC GCObject *luaC_newobjdt (lua_State *L, int tt, size_t sz,
size_t offset);
LUAI_FUNC void luaC_barrier_ (lua_State *L, GCObject *o, GCObject *v);
LUAI_FUNC void luaC_barrierback_ (lua_State *L, GCObject *o);
LUAI_FUNC void luaC_checkfinalizer (lua_State *L, GCObject *o, Table *mt);
LUAI_FUNC void luaC_changemode (lua_State *L, int newmode);
LUAI_FUNC void luaC_fix(lua_State *L, GCObject *o);
LUAI_FUNC void luaC_freeallobjects(lua_State *L);
LUAI_FUNC void luaC_step(lua_State *L);
LUAI_FUNC void luaC_runtilstate(lua_State *L, int statesmask);
LUAI_FUNC void luaC_fullgc(lua_State *L, int isemergency);
LUAI_FUNC GCObject *luaC_newobj(lua_State *L, int tt, size_t sz);
LUAI_FUNC GCObject *luaC_newobjdt(lua_State *L, int tt, size_t sz,
size_t offset);
LUAI_FUNC void luaC_barrier_(lua_State *L, GCObject *o, GCObject *v);
LUAI_FUNC void luaC_barrierback_(lua_State *L, GCObject *o);
LUAI_FUNC void luaC_checkfinalizer(lua_State *L, GCObject *o, Table *mt);
LUAI_FUNC void luaC_changemode(lua_State *L, int newmode);
#endif

View file

@ -40,26 +40,26 @@
** program
*/
static const luaL_Reg loadedlibs[] = {
{LUA_GNAME, luaopen_base},
{LUA_LOADLIBNAME, luaopen_package},
{LUA_COLIBNAME, luaopen_coroutine},
{LUA_TABLIBNAME, luaopen_table},
{LUA_IOLIBNAME, luaopen_io},
{LUA_OSLIBNAME, luaopen_os},
{LUA_STRLIBNAME, luaopen_string},
{LUA_MATHLIBNAME, luaopen_math},
{LUA_UTF8LIBNAME, luaopen_utf8},
{LUA_DBLIBNAME, luaopen_debug},
{NULL, NULL}
{LUA_GNAME, luaopen_base},
{LUA_LOADLIBNAME, luaopen_package},
{LUA_COLIBNAME, luaopen_coroutine},
{LUA_TABLIBNAME, luaopen_table},
{LUA_IOLIBNAME, luaopen_io},
{LUA_OSLIBNAME, luaopen_os},
{LUA_STRLIBNAME, luaopen_string},
{LUA_MATHLIBNAME, luaopen_math},
{LUA_UTF8LIBNAME, luaopen_utf8},
{LUA_DBLIBNAME, luaopen_debug},
{NULL, NULL}
};
LUALIB_API void luaL_openlibs (lua_State *L) {
const luaL_Reg *lib;
/* "require" functions from 'loadedlibs' and set results to global table */
for (lib = loadedlibs; lib->func; lib++) {
luaL_requiref(L, lib->name, lib->func, 1);
lua_pop(L, 1); /* remove lib */
}
LUALIB_API void luaL_openlibs(lua_State *L) {
const luaL_Reg *lib;
/* "require" functions from 'loadedlibs' and set results to global table */
for (lib = loadedlibs; lib->func; lib++) {
luaL_requiref(L, lib->name, lib->func, 1);
lua_pop(L, 1); /* remove lib */
}
}

File diff suppressed because it is too large Load diff

View file

@ -19,94 +19,94 @@
static const void *const disptab[NUM_OPCODES] = {
#if 0
** you can update the following list with this command:
**
** sed -n '/^OP_/\!d; s/OP_/\&\&L_OP_/ ; s/,.*/,/ ; s/\/.*// ; p' lopcodes.h
**
**you can update the following list with this command:
**
**sed - n '/^OP_/\!d; s/OP_/\&\&L_OP_/ ; s/,.*/,/ ; s/\/.*// ; p' lopcodes.h
**
#endif
&&L_OP_MOVE,
&&L_OP_LOADI,
&&L_OP_LOADF,
&&L_OP_LOADK,
&&L_OP_LOADKX,
&&L_OP_LOADFALSE,
&&L_OP_LFALSESKIP,
&&L_OP_LOADTRUE,
&&L_OP_LOADNIL,
&&L_OP_GETUPVAL,
&&L_OP_SETUPVAL,
&&L_OP_GETTABUP,
&&L_OP_GETTABLE,
&&L_OP_GETI,
&&L_OP_GETFIELD,
&&L_OP_SETTABUP,
&&L_OP_SETTABLE,
&&L_OP_SETI,
&&L_OP_SETFIELD,
&&L_OP_NEWTABLE,
&&L_OP_SELF,
&&L_OP_ADDI,
&&L_OP_ADDK,
&&L_OP_SUBK,
&&L_OP_MULK,
&&L_OP_MODK,
&&L_OP_POWK,
&&L_OP_DIVK,
&&L_OP_IDIVK,
&&L_OP_BANDK,
&&L_OP_BORK,
&&L_OP_BXORK,
&&L_OP_SHRI,
&&L_OP_SHLI,
&&L_OP_ADD,
&&L_OP_SUB,
&&L_OP_MUL,
&&L_OP_MOD,
&&L_OP_POW,
&&L_OP_DIV,
&&L_OP_IDIV,
&&L_OP_BAND,
&&L_OP_BOR,
&&L_OP_BXOR,
&&L_OP_SHL,
&&L_OP_SHR,
&&L_OP_MMBIN,
&&L_OP_MMBINI,
&&L_OP_MMBINK,
&&L_OP_UNM,
&&L_OP_BNOT,
&&L_OP_NOT,
&&L_OP_LEN,
&&L_OP_CONCAT,
&&L_OP_CLOSE,
&&L_OP_TBC,
&&L_OP_JMP,
&&L_OP_EQ,
&&L_OP_LT,
&&L_OP_LE,
&&L_OP_EQK,
&&L_OP_EQI,
&&L_OP_LTI,
&&L_OP_LEI,
&&L_OP_GTI,
&&L_OP_GEI,
&&L_OP_TEST,
&&L_OP_TESTSET,
&&L_OP_CALL,
&&L_OP_TAILCALL,
&&L_OP_RETURN,
&&L_OP_RETURN0,
&&L_OP_RETURN1,
&&L_OP_FORLOOP,
&&L_OP_FORPREP,
&&L_OP_TFORPREP,
&&L_OP_TFORCALL,
&&L_OP_TFORLOOP,
&&L_OP_SETLIST,
&&L_OP_CLOSURE,
&&L_OP_VARARG,
&&L_OP_VARARGPREP,
&&L_OP_EXTRAARG
&&L_OP_MOVE,
&&L_OP_LOADI,
&&L_OP_LOADF,
&&L_OP_LOADK,
&&L_OP_LOADKX,
&&L_OP_LOADFALSE,
&&L_OP_LFALSESKIP,
&&L_OP_LOADTRUE,
&&L_OP_LOADNIL,
&&L_OP_GETUPVAL,
&&L_OP_SETUPVAL,
&&L_OP_GETTABUP,
&&L_OP_GETTABLE,
&&L_OP_GETI,
&&L_OP_GETFIELD,
&&L_OP_SETTABUP,
&&L_OP_SETTABLE,
&&L_OP_SETI,
&&L_OP_SETFIELD,
&&L_OP_NEWTABLE,
&&L_OP_SELF,
&&L_OP_ADDI,
&&L_OP_ADDK,
&&L_OP_SUBK,
&&L_OP_MULK,
&&L_OP_MODK,
&&L_OP_POWK,
&&L_OP_DIVK,
&&L_OP_IDIVK,
&&L_OP_BANDK,
&&L_OP_BORK,
&&L_OP_BXORK,
&&L_OP_SHRI,
&&L_OP_SHLI,
&&L_OP_ADD,
&&L_OP_SUB,
&&L_OP_MUL,
&&L_OP_MOD,
&&L_OP_POW,
&&L_OP_DIV,
&&L_OP_IDIV,
&&L_OP_BAND,
&&L_OP_BOR,
&&L_OP_BXOR,
&&L_OP_SHL,
&&L_OP_SHR,
&&L_OP_MMBIN,
&&L_OP_MMBINI,
&&L_OP_MMBINK,
&&L_OP_UNM,
&&L_OP_BNOT,
&&L_OP_NOT,
&&L_OP_LEN,
&&L_OP_CONCAT,
&&L_OP_CLOSE,
&&L_OP_TBC,
&&L_OP_JMP,
&&L_OP_EQ,
&&L_OP_LT,
&&L_OP_LE,
&&L_OP_EQK,
&&L_OP_EQI,
&&L_OP_LTI,
&&L_OP_LEI,
&&L_OP_GTI,
&&L_OP_GEI,
&&L_OP_TEST,
&&L_OP_TESTSET,
&&L_OP_CALL,
&&L_OP_TAILCALL,
&&L_OP_RETURN,
&&L_OP_RETURN0,
&&L_OP_RETURN1,
&&L_OP_FORLOOP,
&&L_OP_FORPREP,
&&L_OP_TFORPREP,
&&L_OP_TFORCALL,
&&L_OP_TFORLOOP,
&&L_OP_SETLIST,
&&L_OP_CLOSURE,
&&L_OP_VARARG,
&&L_OP_VARARGPREP,
&&L_OP_EXTRAARG
};

View file

@ -51,73 +51,74 @@ static const char *const luaX_tokens [] = {
#define save_and_next(ls) (save(ls, ls->current), next(ls))
static l_noret lexerror (LexState *ls, const char *msg, int token);
static l_noret lexerror(LexState *ls, const char *msg, int token);
static void save (LexState *ls, int c) {
Mbuffer *b = ls->buff;
if (luaZ_bufflen(b) + 1 > luaZ_sizebuffer(b)) {
size_t newsize;
if (luaZ_sizebuffer(b) >= MAX_SIZE/2)
lexerror(ls, "lexical element too long", 0);
newsize = luaZ_sizebuffer(b) * 2;
luaZ_resizebuffer(ls->L, b, newsize);
}
b->buffer[luaZ_bufflen(b)++] = cast_char(c);
static void save(LexState *ls, int c) {
Mbuffer *b = ls->buff;
if (luaZ_bufflen(b) + 1 > luaZ_sizebuffer(b)) {
size_t newsize;
if (luaZ_sizebuffer(b) >= MAX_SIZE / 2)
lexerror(ls, "lexical element too long", 0);
newsize = luaZ_sizebuffer(b) * 2;
luaZ_resizebuffer(ls->L, b, newsize);
}
b->buffer[luaZ_bufflen(b)++] = cast_char(c);
}
void luaX_init (lua_State *L) {
int i;
TString *e = luaS_newliteral(L, LUA_ENV); /* create env name */
luaC_fix(L, obj2gco(e)); /* never collect this name */
for (i=0; i<NUM_RESERVED; i++) {
TString *ts = luaS_new(L, luaX_tokens[i]);
luaC_fix(L, obj2gco(ts)); /* reserved words are never collected */
ts->extra = cast_byte(i+1); /* reserved word */
}
void luaX_init(lua_State *L) {
int i;
TString *e = luaS_newliteral(L, LUA_ENV); /* create env name */
luaC_fix(L, obj2gco(e)); /* never collect this name */
for (i = 0; i < NUM_RESERVED; i++) {
TString *ts = luaS_new(L, luaX_tokens[i]);
luaC_fix(L, obj2gco(ts)); /* reserved words are never collected */
ts->extra = cast_byte(i + 1); /* reserved word */
}
}
const char *luaX_token2str (LexState *ls, int token) {
if (token < FIRST_RESERVED) { /* single-byte symbols? */
if (lisprint(token))
return luaO_pushfstring(ls->L, "'%c'", token);
else /* control character */
return luaO_pushfstring(ls->L, "'<\\%d>'", token);
}
else {
const char *s = luaX_tokens[token - FIRST_RESERVED];
if (token < TK_EOS) /* fixed format (symbols and reserved words)? */
return luaO_pushfstring(ls->L, "'%s'", s);
else /* names, strings, and numerals */
return s;
}
const char *luaX_token2str(LexState *ls, int token) {
if (token < FIRST_RESERVED) { /* single-byte symbols? */
if (lisprint(token))
return luaO_pushfstring(ls->L, "'%c'", token);
else /* control character */
return luaO_pushfstring(ls->L, "'<\\%d>'", token);
} else {
const char *s = luaX_tokens[token - FIRST_RESERVED];
if (token < TK_EOS) /* fixed format (symbols and reserved words)? */
return luaO_pushfstring(ls->L, "'%s'", s);
else /* names, strings, and numerals */
return s;
}
}
static const char *txtToken (LexState *ls, int token) {
switch (token) {
case TK_NAME: case TK_STRING:
case TK_FLT: case TK_INT:
save(ls, '\0');
return luaO_pushfstring(ls->L, "'%s'", luaZ_buffer(ls->buff));
default:
return luaX_token2str(ls, token);
}
static const char *txtToken(LexState *ls, int token) {
switch (token) {
case TK_NAME:
case TK_STRING:
case TK_FLT:
case TK_INT:
save(ls, '\0');
return luaO_pushfstring(ls->L, "'%s'", luaZ_buffer(ls->buff));
default:
return luaX_token2str(ls, token);
}
}
static l_noret lexerror (LexState *ls, const char *msg, int token) {
msg = luaG_addinfo(ls->L, msg, ls->source, ls->linenumber);
if (token)
luaO_pushfstring(ls->L, "%s near %s", msg, txtToken(ls, token));
luaD_throw(ls->L, LUA_ERRSYNTAX);
static l_noret lexerror(LexState *ls, const char *msg, int token) {
msg = luaG_addinfo(ls->L, msg, ls->source, ls->linenumber);
if (token)
luaO_pushfstring(ls->L, "%s near %s", msg, txtToken(ls, token));
luaD_throw(ls->L, LUA_ERRSYNTAX);
}
l_noret luaX_syntaxerror (LexState *ls, const char *msg) {
lexerror(ls, msg, ls->t.token);
l_noret luaX_syntaxerror(LexState *ls, const char *msg) {
lexerror(ls, msg, ls->t.token);
}
@ -131,21 +132,21 @@ l_noret luaX_syntaxerror (LexState *ls, const char *msg) {
** is a TValue readily available. Later, the code generation can change
** this value.
*/
TString *luaX_newstring (LexState *ls, const char *str, size_t l) {
lua_State *L = ls->L;
TString *ts = luaS_newlstr(L, str, l); /* create new string */
const TValue *o = luaH_getstr(ls->h, ts);
if (!ttisnil(o)) /* string already present? */
ts = keystrval(nodefromval(o)); /* get saved copy */
else { /* not in use yet */
TValue *stv = s2v(L->top.p++); /* reserve stack space for string */
setsvalue(L, stv, ts); /* temporarily anchor the string */
luaH_finishset(L, ls->h, stv, o, stv); /* t[string] = string */
/* table is not a metatable, so it does not need to invalidate cache */
luaC_checkGC(L);
L->top.p--; /* remove string from stack */
}
return ts;
TString *luaX_newstring(LexState *ls, const char *str, size_t l) {
lua_State *L = ls->L;
TString *ts = luaS_newlstr(L, str, l); /* create new string */
const TValue *o = luaH_getstr(ls->h, ts);
if (!ttisnil(o)) /* string already present? */
ts = keystrval(nodefromval(o)); /* get saved copy */
else { /* not in use yet */
TValue *stv = s2v(L->top.p++); /* reserve stack space for string */
setsvalue(L, stv, ts); /* temporarily anchor the string */
luaH_finishset(L, ls->h, stv, o, stv); /* t[string] = string */
/* table is not a metatable, so it does not need to invalidate cache */
luaC_checkGC(L);
L->top.p--; /* remove string from stack */
}
return ts;
}
@ -153,30 +154,30 @@ TString *luaX_newstring (LexState *ls, const char *str, size_t l) {
** increment line number and skips newline sequence (any of
** \n, \r, \n\r, or \r\n)
*/
static void inclinenumber (LexState *ls) {
int old = ls->current;
lua_assert(currIsNewline(ls));
next(ls); /* skip '\n' or '\r' */
if (currIsNewline(ls) && ls->current != old)
next(ls); /* skip '\n\r' or '\r\n' */
if (++ls->linenumber >= MAX_INT)
lexerror(ls, "chunk has too many lines", 0);
static void inclinenumber(LexState *ls) {
int old = ls->current;
lua_assert(currIsNewline(ls));
next(ls); /* skip '\n' or '\r' */
if (currIsNewline(ls) && ls->current != old)
next(ls); /* skip '\n\r' or '\r\n' */
if (++ls->linenumber >= MAX_INT)
lexerror(ls, "chunk has too many lines", 0);
}
void luaX_setinput (lua_State *L, LexState *ls, ZIO *z, TString *source,
int firstchar) {
ls->t.token = 0;
ls->L = L;
ls->current = firstchar;
ls->lookahead.token = TK_EOS; /* no look-ahead token */
ls->z = z;
ls->fs = NULL;
ls->linenumber = 1;
ls->lastline = 1;
ls->source = source;
ls->envn = luaS_newliteral(L, LUA_ENV); /* get env name */
luaZ_resizebuffer(ls->L, ls->buff, LUA_MINBUFFER); /* initialize buffer */
void luaX_setinput(lua_State *L, LexState *ls, ZIO *z, TString *source,
int firstchar) {
ls->t.token = 0;
ls->L = L;
ls->current = firstchar;
ls->lookahead.token = TK_EOS; /* no look-ahead token */
ls->z = z;
ls->fs = NULL;
ls->linenumber = 1;
ls->lastline = 1;
ls->source = source;
ls->envn = luaS_newliteral(L, LUA_ENV); /* get env name */
luaZ_resizebuffer(ls->L, ls->buff, LUA_MINBUFFER); /* initialize buffer */
}
@ -188,12 +189,11 @@ void luaX_setinput (lua_State *L, LexState *ls, ZIO *z, TString *source,
*/
static int check_next1 (LexState *ls, int c) {
if (ls->current == c) {
next(ls);
return 1;
}
else return 0;
static int check_next1(LexState *ls, int c) {
if (ls->current == c) {
next(ls);
return 1;
} else return 0;
}
@ -201,13 +201,12 @@ static int check_next1 (LexState *ls, int c) {
** Check whether current char is in set 'set' (with two chars) and
** saves it
*/
static int check_next2 (LexState *ls, const char *set) {
lua_assert(set[2] == '\0');
if (ls->current == set[0] || ls->current == set[1]) {
save_and_next(ls);
return 1;
}
else return 0;
static int check_next2(LexState *ls, const char *set) {
lua_assert(set[2] == '\0');
if (ls->current == set[0] || ls->current == set[1]) {
save_and_next(ls);
return 1;
} else return 0;
}
@ -224,35 +223,34 @@ static int check_next2 (LexState *ls, const char *set) {
**
** The caller might have already read an initial dot.
*/
static int read_numeral (LexState *ls, SemInfo *seminfo) {
TValue obj;
const char *expo = "Ee";
int first = ls->current;
lua_assert(lisdigit(ls->current));
save_and_next(ls);
if (first == '0' && check_next2(ls, "xX")) /* hexadecimal? */
expo = "Pp";
for (;;) {
if (check_next2(ls, expo)) /* exponent mark? */
check_next2(ls, "-+"); /* optional exponent sign */
else if (lisxdigit(ls->current) || ls->current == '.') /* '%x|%.' */
save_and_next(ls);
else break;
}
if (lislalpha(ls->current)) /* is numeral touching a letter? */
save_and_next(ls); /* force an error */
save(ls, '\0');
if (luaO_str2num(luaZ_buffer(ls->buff), &obj) == 0) /* format error? */
lexerror(ls, "malformed number", TK_FLT);
if (ttisinteger(&obj)) {
seminfo->i = ivalue(&obj);
return TK_INT;
}
else {
lua_assert(ttisfloat(&obj));
seminfo->r = fltvalue(&obj);
return TK_FLT;
}
static int read_numeral(LexState *ls, SemInfo *seminfo) {
TValue obj;
const char *expo = "Ee";
int first = ls->current;
lua_assert(lisdigit(ls->current));
save_and_next(ls);
if (first == '0' && check_next2(ls, "xX")) /* hexadecimal? */
expo = "Pp";
for (;;) {
if (check_next2(ls, expo)) /* exponent mark? */
check_next2(ls, "-+"); /* optional exponent sign */
else if (lisxdigit(ls->current) || ls->current == '.') /* '%x|%.' */
save_and_next(ls);
else break;
}
if (lislalpha(ls->current)) /* is numeral touching a letter? */
save_and_next(ls); /* force an error */
save(ls, '\0');
if (luaO_str2num(luaZ_buffer(ls->buff), &obj) == 0) /* format error? */
lexerror(ls, "malformed number", TK_FLT);
if (ttisinteger(&obj)) {
seminfo->i = ivalue(&obj);
return TK_INT;
} else {
lua_assert(ttisfloat(&obj));
seminfo->r = fltvalue(&obj);
return TK_FLT;
}
}
@ -262,320 +260,357 @@ static int read_numeral (LexState *ls, SemInfo *seminfo) {
** return 1 if it is a single bracket (no '='s and no 2nd bracket);
** otherwise (an unfinished '[==...') return 0.
*/
static size_t skip_sep (LexState *ls) {
size_t count = 0;
int s = ls->current;
lua_assert(s == '[' || s == ']');
save_and_next(ls);
while (ls->current == '=') {
static size_t skip_sep(LexState *ls) {
size_t count = 0;
int s = ls->current;
lua_assert(s == '[' || s == ']');
save_and_next(ls);
count++;
}
return (ls->current == s) ? count + 2
: (count == 0) ? 1
: 0;
while (ls->current == '=') {
save_and_next(ls);
count++;
}
return (ls->current == s) ? count + 2
: (count == 0) ? 1
: 0;
}
static void read_long_string (LexState *ls, SemInfo *seminfo, size_t sep) {
int line = ls->linenumber; /* initial line (for error message) */
save_and_next(ls); /* skip 2nd '[' */
if (currIsNewline(ls)) /* string starts with a newline? */
inclinenumber(ls); /* skip it */
for (;;) {
switch (ls->current) {
case EOZ: { /* error */
const char *what = (seminfo ? "string" : "comment");
const char *msg = luaO_pushfstring(ls->L,
"unfinished long %s (starting at line %d)", what, line);
lexerror(ls, msg, TK_EOS);
break; /* to avoid warnings */
}
case ']': {
if (skip_sep(ls) == sep) {
save_and_next(ls); /* skip 2nd ']' */
goto endloop;
static void read_long_string(LexState *ls, SemInfo *seminfo, size_t sep) {
int line = ls->linenumber; /* initial line (for error message) */
save_and_next(ls); /* skip 2nd '[' */
if (currIsNewline(ls)) /* string starts with a newline? */
inclinenumber(ls); /* skip it */
for (;;) {
switch (ls->current) {
case EOZ: { /* error */
const char *what = (seminfo ? "string" : "comment");
const char *msg = luaO_pushfstring(ls->L,
"unfinished long %s (starting at line %d)", what, line);
lexerror(ls, msg, TK_EOS);
break; /* to avoid warnings */
}
case ']': {
if (skip_sep(ls) == sep) {
save_and_next(ls); /* skip 2nd ']' */
goto endloop;
}
break;
}
case '\n':
case '\r': {
save(ls, '\n');
inclinenumber(ls);
if (!seminfo) luaZ_resetbuffer(ls->buff); /* avoid wasting space */
break;
}
default: {
if (seminfo) save_and_next(ls);
else next(ls);
}
}
break;
}
case '\n': case '\r': {
save(ls, '\n');
inclinenumber(ls);
if (!seminfo) luaZ_resetbuffer(ls->buff); /* avoid wasting space */
break;
}
default: {
if (seminfo) save_and_next(ls);
else next(ls);
}
}
} endloop:
if (seminfo)
seminfo->ts = luaX_newstring(ls, luaZ_buffer(ls->buff) + sep,
endloop:
if (seminfo)
seminfo->ts = luaX_newstring(ls, luaZ_buffer(ls->buff) + sep,
luaZ_bufflen(ls->buff) - 2 * sep);
}
static void esccheck (LexState *ls, int c, const char *msg) {
if (!c) {
if (ls->current != EOZ)
save_and_next(ls); /* add current to buffer for error message */
lexerror(ls, msg, TK_STRING);
}
static void esccheck(LexState *ls, int c, const char *msg) {
if (!c) {
if (ls->current != EOZ)
save_and_next(ls); /* add current to buffer for error message */
lexerror(ls, msg, TK_STRING);
}
}
static int gethexa (LexState *ls) {
save_and_next(ls);
esccheck (ls, lisxdigit(ls->current), "hexadecimal digit expected");
return luaO_hexavalue(ls->current);
}
static int readhexaesc (LexState *ls) {
int r = gethexa(ls);
r = (r << 4) + gethexa(ls);
luaZ_buffremove(ls->buff, 2); /* remove saved chars from buffer */
return r;
}
static unsigned long readutf8esc (LexState *ls) {
unsigned long r;
int i = 4; /* chars to be removed: '\', 'u', '{', and first digit */
save_and_next(ls); /* skip 'u' */
esccheck(ls, ls->current == '{', "missing '{'");
r = gethexa(ls); /* must have at least one digit */
while (cast_void(save_and_next(ls)), lisxdigit(ls->current)) {
i++;
esccheck(ls, r <= (0x7FFFFFFFu >> 4), "UTF-8 value too large");
r = (r << 4) + luaO_hexavalue(ls->current);
}
esccheck(ls, ls->current == '}', "missing '}'");
next(ls); /* skip '}' */
luaZ_buffremove(ls->buff, i); /* remove saved chars from buffer */
return r;
}
static void utf8esc (LexState *ls) {
char buff[UTF8BUFFSZ];
int n = luaO_utf8esc(buff, readutf8esc(ls));
for (; n > 0; n--) /* add 'buff' to string */
save(ls, buff[UTF8BUFFSZ - n]);
}
static int readdecesc (LexState *ls) {
int i;
int r = 0; /* result accumulator */
for (i = 0; i < 3 && lisdigit(ls->current); i++) { /* read up to 3 digits */
r = 10*r + ls->current - '0';
static int gethexa(LexState *ls) {
save_and_next(ls);
}
esccheck(ls, r <= UCHAR_MAX, "decimal escape too large");
luaZ_buffremove(ls->buff, i); /* remove read digits from buffer */
return r;
esccheck(ls, lisxdigit(ls->current), "hexadecimal digit expected");
return luaO_hexavalue(ls->current);
}
static void read_string (LexState *ls, int del, SemInfo *seminfo) {
save_and_next(ls); /* keep delimiter (for error messages) */
while (ls->current != del) {
switch (ls->current) {
case EOZ:
lexerror(ls, "unfinished string", TK_EOS);
break; /* to avoid warnings */
case '\n':
case '\r':
lexerror(ls, "unfinished string", TK_STRING);
break; /* to avoid warnings */
case '\\': { /* escape sequences */
int c; /* final character to be saved */
save_and_next(ls); /* keep '\\' for error messages */
static int readhexaesc(LexState *ls) {
int r = gethexa(ls);
r = (r << 4) + gethexa(ls);
luaZ_buffremove(ls->buff, 2); /* remove saved chars from buffer */
return r;
}
static unsigned long readutf8esc(LexState *ls) {
unsigned long r;
int i = 4; /* chars to be removed: '\', 'u', '{', and first digit */
save_and_next(ls); /* skip 'u' */
esccheck(ls, ls->current == '{', "missing '{'");
r = gethexa(ls); /* must have at least one digit */
while (cast_void(save_and_next(ls)), lisxdigit(ls->current)) {
i++;
esccheck(ls, r <= (0x7FFFFFFFu >> 4), "UTF-8 value too large");
r = (r << 4) + luaO_hexavalue(ls->current);
}
esccheck(ls, ls->current == '}', "missing '}'");
next(ls); /* skip '}' */
luaZ_buffremove(ls->buff, i); /* remove saved chars from buffer */
return r;
}
static void utf8esc(LexState *ls) {
char buff[UTF8BUFFSZ];
int n = luaO_utf8esc(buff, readutf8esc(ls));
for (; n > 0; n--) /* add 'buff' to string */
save(ls, buff[UTF8BUFFSZ - n]);
}
static int readdecesc(LexState *ls) {
int i;
int r = 0; /* result accumulator */
for (i = 0; i < 3 && lisdigit(ls->current); i++) { /* read up to 3 digits */
r = 10 * r + ls->current - '0';
save_and_next(ls);
}
esccheck(ls, r <= UCHAR_MAX, "decimal escape too large");
luaZ_buffremove(ls->buff, i); /* remove read digits from buffer */
return r;
}
static void read_string(LexState *ls, int del, SemInfo *seminfo) {
save_and_next(ls); /* keep delimiter (for error messages) */
while (ls->current != del) {
switch (ls->current) {
case 'a': c = '\a'; goto read_save;
case 'b': c = '\b'; goto read_save;
case 'f': c = '\f'; goto read_save;
case 'n': c = '\n'; goto read_save;
case 'r': c = '\r'; goto read_save;
case 't': c = '\t'; goto read_save;
case 'v': c = '\v'; goto read_save;
case 'x': c = readhexaesc(ls); goto read_save;
case 'u': utf8esc(ls); goto no_save;
case '\n': case '\r':
inclinenumber(ls); c = '\n'; goto only_save;
case '\\': case '\"': case '\'':
c = ls->current; goto read_save;
case EOZ: goto no_save; /* will raise an error next loop */
case 'z': { /* zap following span of spaces */
luaZ_buffremove(ls->buff, 1); /* remove '\\' */
next(ls); /* skip the 'z' */
while (lisspace(ls->current)) {
if (currIsNewline(ls)) inclinenumber(ls);
else next(ls);
case EOZ:
lexerror(ls, "unfinished string", TK_EOS);
break; /* to avoid warnings */
case '\n':
case '\r':
lexerror(ls, "unfinished string", TK_STRING);
break; /* to avoid warnings */
case '\\': { /* escape sequences */
int c; /* final character to be saved */
save_and_next(ls); /* keep '\\' for error messages */
switch (ls->current) {
case 'a':
c = '\a';
goto read_save;
case 'b':
c = '\b';
goto read_save;
case 'f':
c = '\f';
goto read_save;
case 'n':
c = '\n';
goto read_save;
case 'r':
c = '\r';
goto read_save;
case 't':
c = '\t';
goto read_save;
case 'v':
c = '\v';
goto read_save;
case 'x':
c = readhexaesc(ls);
goto read_save;
case 'u':
utf8esc(ls);
goto no_save;
case '\n':
case '\r':
inclinenumber(ls);
c = '\n';
goto only_save;
case '\\':
case '\"':
case '\'':
c = ls->current;
goto read_save;
case EOZ:
goto no_save; /* will raise an error next loop */
case 'z': { /* zap following span of spaces */
luaZ_buffremove(ls->buff, 1); /* remove '\\' */
next(ls); /* skip the 'z' */
while (lisspace(ls->current)) {
if (currIsNewline(ls)) inclinenumber(ls);
else next(ls);
}
goto no_save;
}
default: {
esccheck(ls, lisdigit(ls->current), "invalid escape sequence");
c = readdecesc(ls); /* digital escape '\ddd' */
goto only_save;
}
}
read_save:
next(ls);
/* go through */
only_save:
luaZ_buffremove(ls->buff, 1); /* remove '\\' */
save(ls, c);
/* go through */
no_save:
break;
}
goto no_save;
}
default: {
esccheck(ls, lisdigit(ls->current), "invalid escape sequence");
c = readdecesc(ls); /* digital escape '\ddd' */
goto only_save;
}
default:
save_and_next(ls);
}
read_save:
next(ls);
/* go through */
only_save:
luaZ_buffremove(ls->buff, 1); /* remove '\\' */
save(ls, c);
/* go through */
no_save: break;
}
default:
save_and_next(ls);
}
}
save_and_next(ls); /* skip delimiter */
seminfo->ts = luaX_newstring(ls, luaZ_buffer(ls->buff) + 1,
luaZ_bufflen(ls->buff) - 2);
save_and_next(ls); /* skip delimiter */
seminfo->ts = luaX_newstring(ls, luaZ_buffer(ls->buff) + 1,
luaZ_bufflen(ls->buff) - 2);
}
static int llex (LexState *ls, SemInfo *seminfo) {
luaZ_resetbuffer(ls->buff);
for (;;) {
switch (ls->current) {
case '\n': case '\r': { /* line breaks */
inclinenumber(ls);
break;
}
case ' ': case '\f': case '\t': case '\v': { /* spaces */
next(ls);
break;
}
case '-': { /* '-' or '--' (comment) */
next(ls);
if (ls->current != '-') return '-';
/* else is a comment */
next(ls);
if (ls->current == '[') { /* long comment? */
size_t sep = skip_sep(ls);
luaZ_resetbuffer(ls->buff); /* 'skip_sep' may dirty the buffer */
if (sep >= 2) {
read_long_string(ls, NULL, sep); /* skip long comment */
luaZ_resetbuffer(ls->buff); /* previous call may dirty the buff. */
break;
}
static int llex(LexState *ls, SemInfo *seminfo) {
luaZ_resetbuffer(ls->buff);
for (;;) {
switch (ls->current) {
case '\n':
case '\r': { /* line breaks */
inclinenumber(ls);
break;
}
case ' ':
case '\f':
case '\t':
case '\v': { /* spaces */
next(ls);
break;
}
case '-': { /* '-' or '--' (comment) */
next(ls);
if (ls->current != '-') return '-';
/* else is a comment */
next(ls);
if (ls->current == '[') { /* long comment? */
size_t sep = skip_sep(ls);
luaZ_resetbuffer(ls->buff); /* 'skip_sep' may dirty the buffer */
if (sep >= 2) {
read_long_string(ls, NULL, sep); /* skip long comment */
luaZ_resetbuffer(ls->buff); /* previous call may dirty the buff. */
break;
}
}
/* else short comment */
while (!currIsNewline(ls) && ls->current != EOZ)
next(ls); /* skip until end of line (or end of file) */
break;
}
case '[': { /* long string or simply '[' */
size_t sep = skip_sep(ls);
if (sep >= 2) {
read_long_string(ls, seminfo, sep);
return TK_STRING;
} else if (sep == 0) /* '[=...' missing second bracket? */
lexerror(ls, "invalid long string delimiter", TK_STRING);
return '[';
}
case '=': {
next(ls);
if (check_next1(ls, '=')) return TK_EQ; /* '==' */
else return '=';
}
case '<': {
next(ls);
if (check_next1(ls, '=')) return TK_LE; /* '<=' */
else if (check_next1(ls, '<')) return TK_SHL; /* '<<' */
else return '<';
}
case '>': {
next(ls);
if (check_next1(ls, '=')) return TK_GE; /* '>=' */
else if (check_next1(ls, '>')) return TK_SHR; /* '>>' */
else return '>';
}
case '/': {
next(ls);
if (check_next1(ls, '/')) return TK_IDIV; /* '//' */
else return '/';
}
case '~': {
next(ls);
if (check_next1(ls, '=')) return TK_NE; /* '~=' */
else return '~';
}
case ':': {
next(ls);
if (check_next1(ls, ':')) return TK_DBCOLON; /* '::' */
else return ':';
}
case '"':
case '\'': { /* short literal strings */
read_string(ls, ls->current, seminfo);
return TK_STRING;
}
case '.': { /* '.', '..', '...', or number */
save_and_next(ls);
if (check_next1(ls, '.')) {
if (check_next1(ls, '.'))
return TK_DOTS; /* '...' */
else return TK_CONCAT; /* '..' */
} else if (!lisdigit(ls->current)) return '.';
else return read_numeral(ls, seminfo);
}
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9': {
return read_numeral(ls, seminfo);
}
case EOZ: {
return TK_EOS;
}
default: {
if (lislalpha(ls->current)) { /* identifier or reserved word? */
TString *ts;
do {
save_and_next(ls);
} while (lislalnum(ls->current));
ts = luaX_newstring(ls, luaZ_buffer(ls->buff),
luaZ_bufflen(ls->buff));
seminfo->ts = ts;
if (isreserved(ts)) /* reserved word? */
return ts->extra - 1 + FIRST_RESERVED;
else {
return TK_NAME;
}
} else { /* single-char tokens ('+', '*', '%', '{', '}', ...) */
int c = ls->current;
next(ls);
return c;
}
}
}
/* else short comment */
while (!currIsNewline(ls) && ls->current != EOZ)
next(ls); /* skip until end of line (or end of file) */
break;
}
case '[': { /* long string or simply '[' */
size_t sep = skip_sep(ls);
if (sep >= 2) {
read_long_string(ls, seminfo, sep);
return TK_STRING;
}
else if (sep == 0) /* '[=...' missing second bracket? */
lexerror(ls, "invalid long string delimiter", TK_STRING);
return '[';
}
case '=': {
next(ls);
if (check_next1(ls, '=')) return TK_EQ; /* '==' */
else return '=';
}
case '<': {
next(ls);
if (check_next1(ls, '=')) return TK_LE; /* '<=' */
else if (check_next1(ls, '<')) return TK_SHL; /* '<<' */
else return '<';
}
case '>': {
next(ls);
if (check_next1(ls, '=')) return TK_GE; /* '>=' */
else if (check_next1(ls, '>')) return TK_SHR; /* '>>' */
else return '>';
}
case '/': {
next(ls);
if (check_next1(ls, '/')) return TK_IDIV; /* '//' */
else return '/';
}
case '~': {
next(ls);
if (check_next1(ls, '=')) return TK_NE; /* '~=' */
else return '~';
}
case ':': {
next(ls);
if (check_next1(ls, ':')) return TK_DBCOLON; /* '::' */
else return ':';
}
case '"': case '\'': { /* short literal strings */
read_string(ls, ls->current, seminfo);
return TK_STRING;
}
case '.': { /* '.', '..', '...', or number */
save_and_next(ls);
if (check_next1(ls, '.')) {
if (check_next1(ls, '.'))
return TK_DOTS; /* '...' */
else return TK_CONCAT; /* '..' */
}
else if (!lisdigit(ls->current)) return '.';
else return read_numeral(ls, seminfo);
}
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9': {
return read_numeral(ls, seminfo);
}
case EOZ: {
return TK_EOS;
}
default: {
if (lislalpha(ls->current)) { /* identifier or reserved word? */
TString *ts;
do {
save_and_next(ls);
} while (lislalnum(ls->current));
ts = luaX_newstring(ls, luaZ_buffer(ls->buff),
luaZ_bufflen(ls->buff));
seminfo->ts = ts;
if (isreserved(ts)) /* reserved word? */
return ts->extra - 1 + FIRST_RESERVED;
else {
return TK_NAME;
}
}
else { /* single-char tokens ('+', '*', '%', '{', '}', ...) */
int c = ls->current;
next(ls);
return c;
}
}
}
}
}
void luaX_next (LexState *ls) {
ls->lastline = ls->linenumber;
if (ls->lookahead.token != TK_EOS) { /* is there a look-ahead token? */
ls->t = ls->lookahead; /* use this one */
ls->lookahead.token = TK_EOS; /* and discharge it */
}
else
ls->t.token = llex(ls, &ls->t.seminfo); /* read next token */
void luaX_next(LexState *ls) {
ls->lastline = ls->linenumber;
if (ls->lookahead.token != TK_EOS) { /* is there a look-ahead token? */
ls->t = ls->lookahead; /* use this one */
ls->lookahead.token = TK_EOS; /* and discharge it */
} else
ls->t.token = llex(ls, &ls->t.seminfo); /* read next token */
}
int luaX_lookahead (LexState *ls) {
lua_assert(ls->lookahead.token == TK_EOS);
ls->lookahead.token = llex(ls, &ls->lookahead.seminfo);
return ls->lookahead.token;
int luaX_lookahead(LexState *ls) {
lua_assert(ls->lookahead.token == TK_EOS);
ls->lookahead.token = llex(ls, &ls->lookahead.seminfo);
return ls->lookahead.token;
}

View file

@ -30,16 +30,16 @@
* grep "ORDER RESERVED"
*/
enum RESERVED {
/* terminal symbols denoted by reserved words */
TK_AND = FIRST_RESERVED, TK_BREAK,
TK_DO, TK_ELSE, TK_ELSEIF, TK_END, TK_FALSE, TK_FOR, TK_FUNCTION,
TK_GOTO, TK_IF, TK_IN, TK_LOCAL, TK_NIL, TK_NOT, TK_OR, TK_REPEAT,
TK_RETURN, TK_THEN, TK_TRUE, TK_UNTIL, TK_WHILE,
/* other terminal symbols */
TK_IDIV, TK_CONCAT, TK_DOTS, TK_EQ, TK_GE, TK_LE, TK_NE,
TK_SHL, TK_SHR,
TK_DBCOLON, TK_EOS,
TK_FLT, TK_INT, TK_NAME, TK_STRING
/* terminal symbols denoted by reserved words */
TK_AND = FIRST_RESERVED, TK_BREAK,
TK_DO, TK_ELSE, TK_ELSEIF, TK_END, TK_FALSE, TK_FOR, TK_FUNCTION,
TK_GOTO, TK_IF, TK_IN, TK_LOCAL, TK_NIL, TK_NOT, TK_OR, TK_REPEAT,
TK_RETURN, TK_THEN, TK_TRUE, TK_UNTIL, TK_WHILE,
/* other terminal symbols */
TK_IDIV, TK_CONCAT, TK_DOTS, TK_EQ, TK_GE, TK_LE, TK_NE,
TK_SHL, TK_SHR,
TK_DBCOLON, TK_EOS,
TK_FLT, TK_INT, TK_NAME, TK_STRING
};
/* number of reserved words */
@ -47,45 +47,45 @@ enum RESERVED {
typedef union {
lua_Number r;
lua_Integer i;
TString *ts;
lua_Number r;
lua_Integer i;
TString *ts;
} SemInfo; /* semantics information */
typedef struct Token {
int token;
SemInfo seminfo;
int token;
SemInfo seminfo;
} Token;
/* state of the lexer plus state of the parser when shared by all
functions */
typedef struct LexState {
int current; /* current character (charint) */
int linenumber; /* input line counter */
int lastline; /* line of last token 'consumed' */
Token t; /* current token */
Token lookahead; /* look ahead token */
struct FuncState *fs; /* current function (parser) */
struct lua_State *L;
ZIO *z; /* input stream */
Mbuffer *buff; /* buffer for tokens */
Table *h; /* to avoid collection/reuse strings */
struct Dyndata *dyd; /* dynamic structures used by the parser */
TString *source; /* current source name */
TString *envn; /* environment variable name */
int current; /* current character (charint) */
int linenumber; /* input line counter */
int lastline; /* line of last token 'consumed' */
Token t; /* current token */
Token lookahead; /* look ahead token */
struct FuncState *fs; /* current function (parser) */
struct lua_State *L;
ZIO *z; /* input stream */
Mbuffer *buff; /* buffer for tokens */
Table *h; /* to avoid collection/reuse strings */
struct Dyndata *dyd; /* dynamic structures used by the parser */
TString *source; /* current source name */
TString *envn; /* environment variable name */
} LexState;
LUAI_FUNC void luaX_init (lua_State *L);
LUAI_FUNC void luaX_setinput (lua_State *L, LexState *ls, ZIO *z,
TString *source, int firstchar);
LUAI_FUNC TString *luaX_newstring (LexState *ls, const char *str, size_t l);
LUAI_FUNC void luaX_next (LexState *ls);
LUAI_FUNC int luaX_lookahead (LexState *ls);
LUAI_FUNC l_noret luaX_syntaxerror (LexState *ls, const char *s);
LUAI_FUNC const char *luaX_token2str (LexState *ls, int token);
LUAI_FUNC void luaX_init(lua_State *L);
LUAI_FUNC void luaX_setinput(lua_State *L, LexState *ls, ZIO *z,
TString *source, int firstchar);
LUAI_FUNC TString *luaX_newstring(LexState *ls, const char *str, size_t l);
LUAI_FUNC void luaX_next(LexState *ls);
LUAI_FUNC int luaX_lookahead(LexState *ls);
LUAI_FUNC l_noret luaX_syntaxerror(LexState *ls, const char *s);
LUAI_FUNC const char *luaX_token2str(LexState *ls, int token);
#endif

View file

@ -26,108 +26,105 @@
#define PI (l_mathop(3.141592653589793238462643383279502884))
static int math_abs (lua_State *L) {
if (lua_isinteger(L, 1)) {
lua_Integer n = lua_tointeger(L, 1);
if (n < 0) n = (lua_Integer)(0u - (lua_Unsigned)n);
lua_pushinteger(L, n);
}
else
lua_pushnumber(L, l_mathop(fabs)(luaL_checknumber(L, 1)));
return 1;
static int math_abs(lua_State *L) {
if (lua_isinteger(L, 1)) {
lua_Integer n = lua_tointeger(L, 1);
if (n < 0) n = (lua_Integer)(0u - (lua_Unsigned)n);
lua_pushinteger(L, n);
} else
lua_pushnumber(L, l_mathop(fabs)(luaL_checknumber(L, 1)));
return 1;
}
static int math_sin (lua_State *L) {
lua_pushnumber(L, l_mathop(sin)(luaL_checknumber(L, 1)));
return 1;
static int math_sin(lua_State *L) {
lua_pushnumber(L, l_mathop(sin)(luaL_checknumber(L, 1)));
return 1;
}
static int math_cos (lua_State *L) {
lua_pushnumber(L, l_mathop(cos)(luaL_checknumber(L, 1)));
return 1;
static int math_cos(lua_State *L) {
lua_pushnumber(L, l_mathop(cos)(luaL_checknumber(L, 1)));
return 1;
}
static int math_tan (lua_State *L) {
lua_pushnumber(L, l_mathop(tan)(luaL_checknumber(L, 1)));
return 1;
static int math_tan(lua_State *L) {
lua_pushnumber(L, l_mathop(tan)(luaL_checknumber(L, 1)));
return 1;
}
static int math_asin (lua_State *L) {
lua_pushnumber(L, l_mathop(asin)(luaL_checknumber(L, 1)));
return 1;
static int math_asin(lua_State *L) {
lua_pushnumber(L, l_mathop(asin)(luaL_checknumber(L, 1)));
return 1;
}
static int math_acos (lua_State *L) {
lua_pushnumber(L, l_mathop(acos)(luaL_checknumber(L, 1)));
return 1;
static int math_acos(lua_State *L) {
lua_pushnumber(L, l_mathop(acos)(luaL_checknumber(L, 1)));
return 1;
}
static int math_atan (lua_State *L) {
lua_Number y = luaL_checknumber(L, 1);
lua_Number x = luaL_optnumber(L, 2, 1);
lua_pushnumber(L, l_mathop(atan2)(y, x));
return 1;
static int math_atan(lua_State *L) {
lua_Number y = luaL_checknumber(L, 1);
lua_Number x = luaL_optnumber(L, 2, 1);
lua_pushnumber(L, l_mathop(atan2)(y, x));
return 1;
}
static int math_toint (lua_State *L) {
int valid;
lua_Integer n = lua_tointegerx(L, 1, &valid);
if (l_likely(valid))
lua_pushinteger(L, n);
else {
luaL_checkany(L, 1);
luaL_pushfail(L); /* value is not convertible to integer */
}
return 1;
}
static void pushnumint (lua_State *L, lua_Number d) {
lua_Integer n;
if (lua_numbertointeger(d, &n)) /* does 'd' fit in an integer? */
lua_pushinteger(L, n); /* result is integer */
else
lua_pushnumber(L, d); /* result is float */
}
static int math_floor (lua_State *L) {
if (lua_isinteger(L, 1))
lua_settop(L, 1); /* integer is its own floor */
else {
lua_Number d = l_mathop(floor)(luaL_checknumber(L, 1));
pushnumint(L, d);
}
return 1;
}
static int math_ceil (lua_State *L) {
if (lua_isinteger(L, 1))
lua_settop(L, 1); /* integer is its own ceil */
else {
lua_Number d = l_mathop(ceil)(luaL_checknumber(L, 1));
pushnumint(L, d);
}
return 1;
}
static int math_fmod (lua_State *L) {
if (lua_isinteger(L, 1) && lua_isinteger(L, 2)) {
lua_Integer d = lua_tointeger(L, 2);
if ((lua_Unsigned)d + 1u <= 1u) { /* special cases: -1 or 0 */
luaL_argcheck(L, d != 0, 2, "zero");
lua_pushinteger(L, 0); /* avoid overflow with 0x80000... / -1 */
static int math_toint(lua_State *L) {
int valid;
lua_Integer n = lua_tointegerx(L, 1, &valid);
if (l_likely(valid))
lua_pushinteger(L, n);
else {
luaL_checkany(L, 1);
luaL_pushfail(L); /* value is not convertible to integer */
}
return 1;
}
static void pushnumint(lua_State *L, lua_Number d) {
lua_Integer n;
if (lua_numbertointeger(d, &n)) /* does 'd' fit in an integer? */
lua_pushinteger(L, n); /* result is integer */
else
lua_pushinteger(L, lua_tointeger(L, 1) % d);
}
else
lua_pushnumber(L, l_mathop(fmod)(luaL_checknumber(L, 1),
luaL_checknumber(L, 2)));
return 1;
lua_pushnumber(L, d); /* result is float */
}
static int math_floor(lua_State *L) {
if (lua_isinteger(L, 1))
lua_settop(L, 1); /* integer is its own floor */
else {
lua_Number d = l_mathop(floor)(luaL_checknumber(L, 1));
pushnumint(L, d);
}
return 1;
}
static int math_ceil(lua_State *L) {
if (lua_isinteger(L, 1))
lua_settop(L, 1); /* integer is its own ceil */
else {
lua_Number d = l_mathop(ceil)(luaL_checknumber(L, 1));
pushnumint(L, d);
}
return 1;
}
static int math_fmod(lua_State *L) {
if (lua_isinteger(L, 1) && lua_isinteger(L, 2)) {
lua_Integer d = lua_tointeger(L, 2);
if ((lua_Unsigned)d + 1u <= 1u) { /* special cases: -1 or 0 */
luaL_argcheck(L, d != 0, 2, "zero");
lua_pushinteger(L, 0); /* avoid overflow with 0x80000... / -1 */
} else
lua_pushinteger(L, lua_tointeger(L, 1) % d);
} else
lua_pushnumber(L, l_mathop(fmod)(luaL_checknumber(L, 1),
luaL_checknumber(L, 2)));
return 1;
}
@ -136,109 +133,108 @@ static int math_fmod (lua_State *L) {
** (which is not compatible with 'float*') when lua_Number is not
** 'double'.
*/
static int math_modf (lua_State *L) {
if (lua_isinteger(L ,1)) {
lua_settop(L, 1); /* number is its own integer part */
lua_pushnumber(L, 0); /* no fractional part */
}
else {
lua_Number n = luaL_checknumber(L, 1);
/* integer part (rounds toward zero) */
lua_Number ip = (n < 0) ? l_mathop(ceil)(n) : l_mathop(floor)(n);
pushnumint(L, ip);
/* fractional part (test needed for inf/-inf) */
lua_pushnumber(L, (n == ip) ? l_mathop(0.0) : (n - ip));
}
return 2;
static int math_modf(lua_State *L) {
if (lua_isinteger(L, 1)) {
lua_settop(L, 1); /* number is its own integer part */
lua_pushnumber(L, 0); /* no fractional part */
} else {
lua_Number n = luaL_checknumber(L, 1);
/* integer part (rounds toward zero) */
lua_Number ip = (n < 0) ? l_mathop(ceil)(n) : l_mathop(floor)(n);
pushnumint(L, ip);
/* fractional part (test needed for inf/-inf) */
lua_pushnumber(L, (n == ip) ? l_mathop(0.0) : (n - ip));
}
return 2;
}
static int math_sqrt (lua_State *L) {
lua_pushnumber(L, l_mathop(sqrt)(luaL_checknumber(L, 1)));
return 1;
static int math_sqrt(lua_State *L) {
lua_pushnumber(L, l_mathop(sqrt)(luaL_checknumber(L, 1)));
return 1;
}
static int math_ult (lua_State *L) {
lua_Integer a = luaL_checkinteger(L, 1);
lua_Integer b = luaL_checkinteger(L, 2);
lua_pushboolean(L, (lua_Unsigned)a < (lua_Unsigned)b);
return 1;
static int math_ult(lua_State *L) {
lua_Integer a = luaL_checkinteger(L, 1);
lua_Integer b = luaL_checkinteger(L, 2);
lua_pushboolean(L, (lua_Unsigned)a < (lua_Unsigned)b);
return 1;
}
static int math_log (lua_State *L) {
lua_Number x = luaL_checknumber(L, 1);
lua_Number res;
if (lua_isnoneornil(L, 2))
res = l_mathop(log)(x);
else {
lua_Number base = luaL_checknumber(L, 2);
static int math_log(lua_State *L) {
lua_Number x = luaL_checknumber(L, 1);
lua_Number res;
if (lua_isnoneornil(L, 2))
res = l_mathop(log)(x);
else {
lua_Number base = luaL_checknumber(L, 2);
#if !defined(LUA_USE_C89)
if (base == l_mathop(2.0))
res = l_mathop(log2)(x);
else
if (base == l_mathop(2.0))
res = l_mathop(log2)(x);
else
#endif
if (base == l_mathop(10.0))
res = l_mathop(log10)(x);
else
res = l_mathop(log)(x)/l_mathop(log)(base);
}
lua_pushnumber(L, res);
return 1;
if (base == l_mathop(10.0))
res = l_mathop(log10)(x);
else
res = l_mathop(log)(x) / l_mathop(log)(base);
}
lua_pushnumber(L, res);
return 1;
}
static int math_exp (lua_State *L) {
lua_pushnumber(L, l_mathop(exp)(luaL_checknumber(L, 1)));
return 1;
static int math_exp(lua_State *L) {
lua_pushnumber(L, l_mathop(exp)(luaL_checknumber(L, 1)));
return 1;
}
static int math_deg (lua_State *L) {
lua_pushnumber(L, luaL_checknumber(L, 1) * (l_mathop(180.0) / PI));
return 1;
static int math_deg(lua_State *L) {
lua_pushnumber(L, luaL_checknumber(L, 1) * (l_mathop(180.0) / PI));
return 1;
}
static int math_rad (lua_State *L) {
lua_pushnumber(L, luaL_checknumber(L, 1) * (PI / l_mathop(180.0)));
return 1;
static int math_rad(lua_State *L) {
lua_pushnumber(L, luaL_checknumber(L, 1) * (PI / l_mathop(180.0)));
return 1;
}
static int math_min (lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
int imin = 1; /* index of current minimum value */
int i;
luaL_argcheck(L, n >= 1, 1, "value expected");
for (i = 2; i <= n; i++) {
if (lua_compare(L, i, imin, LUA_OPLT))
imin = i;
}
lua_pushvalue(L, imin);
return 1;
static int math_min(lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
int imin = 1; /* index of current minimum value */
int i;
luaL_argcheck(L, n >= 1, 1, "value expected");
for (i = 2; i <= n; i++) {
if (lua_compare(L, i, imin, LUA_OPLT))
imin = i;
}
lua_pushvalue(L, imin);
return 1;
}
static int math_max (lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
int imax = 1; /* index of current maximum value */
int i;
luaL_argcheck(L, n >= 1, 1, "value expected");
for (i = 2; i <= n; i++) {
if (lua_compare(L, imax, i, LUA_OPLT))
imax = i;
}
lua_pushvalue(L, imax);
return 1;
static int math_max(lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
int imax = 1; /* index of current maximum value */
int i;
luaL_argcheck(L, n >= 1, 1, "value expected");
for (i = 2; i <= n; i++) {
if (lua_compare(L, imax, i, LUA_OPLT))
imax = i;
}
lua_pushvalue(L, imax);
return 1;
}
static int math_type (lua_State *L) {
if (lua_type(L, 1) == LUA_TNUMBER)
lua_pushstring(L, (lua_isinteger(L, 1)) ? "integer" : "float");
else {
luaL_checkany(L, 1);
luaL_pushfail(L);
}
return 1;
static int math_type(lua_State *L) {
if (lua_type(L, 1) == LUA_TNUMBER)
lua_pushstring(L, (lua_isinteger(L, 1)) ? "integer" : "float");
else {
luaL_checkany(L, 1);
luaL_pushfail(L);
}
return 1;
}
@ -313,21 +309,21 @@ static int math_type (lua_State *L) {
/* rotate left 'x' by 'n' bits */
static Rand64 rotl (Rand64 x, int n) {
return (x << n) | (trim64(x) >> (64 - n));
static Rand64 rotl(Rand64 x, int n) {
return (x << n) | (trim64(x) >> (64 - n));
}
static Rand64 nextrand (Rand64 *state) {
Rand64 state0 = state[0];
Rand64 state1 = state[1];
Rand64 state2 = state[2] ^ state0;
Rand64 state3 = state[3] ^ state1;
Rand64 res = rotl(state1 * 5, 7) * 9;
state[0] = state0 ^ state3;
state[1] = state1 ^ state2;
state[2] = state2 ^ (state1 << 17);
state[3] = rotl(state3, 45);
return res;
static Rand64 nextrand(Rand64 *state) {
Rand64 state0 = state[0];
Rand64 state1 = state[1];
Rand64 state2 = state[2] ^ state0;
Rand64 state3 = state[3] ^ state1;
Rand64 res = rotl(state1 * 5, 7) * 9;
state[0] = state0 ^ state3;
state[1] = state1 ^ state2;
state[2] = state2 ^ (state1 << 17);
state[3] = rotl(state3, 45);
return res;
}
@ -348,13 +344,13 @@ static Rand64 nextrand (Rand64 *state) {
/* 2^(-FIGS) == 2^-1 / 2^(FIGS-1) */
#define scaleFIG (l_mathop(0.5) / ((Rand64)1 << (FIGS - 1)))
static lua_Number I2d (Rand64 x) {
SRand64 sx = (SRand64)(trim64(x) >> shift64_FIG);
lua_Number res = (lua_Number)(sx) * scaleFIG;
if (sx < 0)
res += l_mathop(1.0); /* correct the two's complement if negative */
lua_assert(0 <= res && res < 1);
return res;
static lua_Number I2d(Rand64 x) {
SRand64 sx = (SRand64)(trim64(x) >> shift64_FIG);
lua_Number res = (lua_Number)(sx) * scaleFIG;
if (sx < 0)
res += l_mathop(1.0); /* correct the two's complement if negative */
lua_assert(0 <= res && res < 1);
return res;
}
/* convert a 'Rand64' to a 'lua_Unsigned' */
@ -378,8 +374,8 @@ typedef unsigned long lu_int32;
** Use two 32-bit integers to represent a 64-bit quantity.
*/
typedef struct Rand64 {
lu_int32 h; /* higher half */
lu_int32 l; /* lower half */
lu_int32 h; /* higher half */
lu_int32 l; /* lower half */
} Rand64;
@ -398,71 +394,71 @@ typedef struct Rand64 {
*/
/* build a new Rand64 value */
static Rand64 packI (lu_int32 h, lu_int32 l) {
Rand64 result;
result.h = h;
result.l = l;
return result;
static Rand64 packI(lu_int32 h, lu_int32 l) {
Rand64 result;
result.h = h;
result.l = l;
return result;
}
/* return i << n */
static Rand64 Ishl (Rand64 i, int n) {
lua_assert(n > 0 && n < 32);
return packI((i.h << n) | (trim32(i.l) >> (32 - n)), i.l << n);
static Rand64 Ishl(Rand64 i, int n) {
lua_assert(n > 0 && n < 32);
return packI((i.h << n) | (trim32(i.l) >> (32 - n)), i.l << n);
}
/* i1 ^= i2 */
static void Ixor (Rand64 *i1, Rand64 i2) {
i1->h ^= i2.h;
i1->l ^= i2.l;
static void Ixor(Rand64 *i1, Rand64 i2) {
i1->h ^= i2.h;
i1->l ^= i2.l;
}
/* return i1 + i2 */
static Rand64 Iadd (Rand64 i1, Rand64 i2) {
Rand64 result = packI(i1.h + i2.h, i1.l + i2.l);
if (trim32(result.l) < trim32(i1.l)) /* carry? */
result.h++;
return result;
static Rand64 Iadd(Rand64 i1, Rand64 i2) {
Rand64 result = packI(i1.h + i2.h, i1.l + i2.l);
if (trim32(result.l) < trim32(i1.l)) /* carry? */
result.h++;
return result;
}
/* return i * 5 */
static Rand64 times5 (Rand64 i) {
return Iadd(Ishl(i, 2), i); /* i * 5 == (i << 2) + i */
static Rand64 times5(Rand64 i) {
return Iadd(Ishl(i, 2), i); /* i * 5 == (i << 2) + i */
}
/* return i * 9 */
static Rand64 times9 (Rand64 i) {
return Iadd(Ishl(i, 3), i); /* i * 9 == (i << 3) + i */
static Rand64 times9(Rand64 i) {
return Iadd(Ishl(i, 3), i); /* i * 9 == (i << 3) + i */
}
/* return 'i' rotated left 'n' bits */
static Rand64 rotl (Rand64 i, int n) {
lua_assert(n > 0 && n < 32);
return packI((i.h << n) | (trim32(i.l) >> (32 - n)),
(trim32(i.h) >> (32 - n)) | (i.l << n));
static Rand64 rotl(Rand64 i, int n) {
lua_assert(n > 0 && n < 32);
return packI((i.h << n) | (trim32(i.l) >> (32 - n)),
(trim32(i.h) >> (32 - n)) | (i.l << n));
}
/* for offsets larger than 32, rotate right by 64 - offset */
static Rand64 rotl1 (Rand64 i, int n) {
lua_assert(n > 32 && n < 64);
n = 64 - n;
return packI((trim32(i.h) >> n) | (i.l << (32 - n)),
(i.h << (32 - n)) | (trim32(i.l) >> n));
static Rand64 rotl1(Rand64 i, int n) {
lua_assert(n > 32 && n < 64);
n = 64 - n;
return packI((trim32(i.h) >> n) | (i.l << (32 - n)),
(i.h << (32 - n)) | (trim32(i.l) >> n));
}
/*
** implementation of 'xoshiro256**' algorithm on 'Rand64' values
*/
static Rand64 nextrand (Rand64 *state) {
Rand64 res = times9(rotl(times5(state[1]), 7));
Rand64 t = Ishl(state[1], 17);
Ixor(&state[2], state[0]);
Ixor(&state[3], state[1]);
Ixor(&state[1], state[2]);
Ixor(&state[0], state[3]);
Ixor(&state[2], t);
state[3] = rotl1(state[3], 45);
return res;
static Rand64 nextrand(Rand64 *state) {
Rand64 res = times9(rotl(times5(state[1]), 7));
Rand64 t = Ishl(state[1], 17);
Ixor(&state[2], state[0]);
Ixor(&state[3], state[1]);
Ixor(&state[1], state[2]);
Ixor(&state[0], state[3]);
Ixor(&state[2], t);
state[3] = rotl1(state[3], 45);
return res;
}
@ -483,9 +479,9 @@ static Rand64 nextrand (Rand64 *state) {
** get up to 32 bits from higher half, shifting right to
** throw out the extra bits.
*/
static lua_Number I2d (Rand64 x) {
lua_Number h = (lua_Number)(trim32(x.h) >> (32 - FIGS));
return h * scaleFIG;
static lua_Number I2d(Rand64 x) {
lua_Number h = (lua_Number)(trim32(x.h) >> (32 - FIGS));
return h * scaleFIG;
}
#else /* 32 < FIGS <= 64 */
@ -506,23 +502,23 @@ static lua_Number I2d (Rand64 x) {
#define shiftHI ((lua_Number)(UONE << (FIGS - 33)) * l_mathop(2.0))
static lua_Number I2d (Rand64 x) {
lua_Number h = (lua_Number)trim32(x.h) * shiftHI;
lua_Number l = (lua_Number)(trim32(x.l) >> shiftLOW);
return (h + l) * scaleFIG;
static lua_Number I2d(Rand64 x) {
lua_Number h = (lua_Number)trim32(x.h) * shiftHI;
lua_Number l = (lua_Number)(trim32(x.l) >> shiftLOW);
return (h + l) * scaleFIG;
}
#endif
/* convert a 'Rand64' to a 'lua_Unsigned' */
static lua_Unsigned I2UInt (Rand64 x) {
return (((lua_Unsigned)trim32(x.h) << 31) << 1) | (lua_Unsigned)trim32(x.l);
static lua_Unsigned I2UInt(Rand64 x) {
return (((lua_Unsigned)trim32(x.h) << 31) << 1) | (lua_Unsigned)trim32(x.l);
}
/* convert a 'lua_Unsigned' to a 'Rand64' */
static Rand64 Int2I (lua_Unsigned n) {
return packI((lu_int32)((n >> 31) >> 1), (lu_int32)n);
static Rand64 Int2I(lua_Unsigned n) {
return packI((lu_int32)((n >> 31) >> 1), (lu_int32)n);
}
#endif /* } */
@ -532,7 +528,7 @@ static Rand64 Int2I (lua_Unsigned n) {
** A state uses four 'Rand64' values.
*/
typedef struct {
Rand64 s[4];
Rand64 s[4];
} RanState;
@ -546,77 +542,78 @@ typedef struct {
** is inside [0, n], we are done. Otherwise, we try with another 'ran',
** until we have a result inside the interval.
*/
static lua_Unsigned project (lua_Unsigned ran, lua_Unsigned n,
RanState *state) {
if ((n & (n + 1)) == 0) /* is 'n + 1' a power of 2? */
return ran & n; /* no bias */
else {
lua_Unsigned lim = n;
/* compute the smallest (2^b - 1) not smaller than 'n' */
lim |= (lim >> 1);
lim |= (lim >> 2);
lim |= (lim >> 4);
lim |= (lim >> 8);
lim |= (lim >> 16);
static lua_Unsigned project(lua_Unsigned ran, lua_Unsigned n,
RanState *state) {
if ((n & (n + 1)) == 0) /* is 'n + 1' a power of 2? */
return ran & n; /* no bias */
else {
lua_Unsigned lim = n;
/* compute the smallest (2^b - 1) not smaller than 'n' */
lim |= (lim >> 1);
lim |= (lim >> 2);
lim |= (lim >> 4);
lim |= (lim >> 8);
lim |= (lim >> 16);
#if (LUA_MAXUNSIGNED >> 31) >= 3
lim |= (lim >> 32); /* integer type has more than 32 bits */
lim |= (lim >> 32); /* integer type has more than 32 bits */
#endif
lua_assert((lim & (lim + 1)) == 0 /* 'lim + 1' is a power of 2, */
&& lim >= n /* not smaller than 'n', */
&& (lim >> 1) < n); /* and it is the smallest one */
while ((ran &= lim) > n) /* project 'ran' into [0..lim] */
ran = I2UInt(nextrand(state->s)); /* not inside [0..n]? try again */
return ran;
}
lua_assert((lim & (lim + 1)) == 0 /* 'lim + 1' is a power of 2, */
&& lim >= n /* not smaller than 'n', */
&& (lim >> 1) < n); /* and it is the smallest one */
while ((ran &= lim) > n) /* project 'ran' into [0..lim] */
ran = I2UInt(nextrand(state->s)); /* not inside [0..n]? try again */
return ran;
}
}
static int math_random (lua_State *L) {
lua_Integer low, up;
lua_Unsigned p;
RanState *state = (RanState *)lua_touserdata(L, lua_upvalueindex(1));
Rand64 rv = nextrand(state->s); /* next pseudo-random value */
switch (lua_gettop(L)) { /* check number of arguments */
case 0: { /* no arguments */
lua_pushnumber(L, I2d(rv)); /* float between 0 and 1 */
return 1;
static int math_random(lua_State *L) {
lua_Integer low, up;
lua_Unsigned p;
RanState *state = (RanState *)lua_touserdata(L, lua_upvalueindex(1));
Rand64 rv = nextrand(state->s); /* next pseudo-random value */
switch (lua_gettop(L)) { /* check number of arguments */
case 0: { /* no arguments */
lua_pushnumber(L, I2d(rv)); /* float between 0 and 1 */
return 1;
}
case 1: { /* only upper limit */
low = 1;
up = luaL_checkinteger(L, 1);
if (up == 0) { /* single 0 as argument? */
lua_pushinteger(L, I2UInt(rv)); /* full random integer */
return 1;
}
break;
}
case 2: { /* lower and upper limits */
low = luaL_checkinteger(L, 1);
up = luaL_checkinteger(L, 2);
break;
}
default:
return luaL_error(L, "wrong number of arguments");
}
case 1: { /* only upper limit */
low = 1;
up = luaL_checkinteger(L, 1);
if (up == 0) { /* single 0 as argument? */
lua_pushinteger(L, I2UInt(rv)); /* full random integer */
return 1;
}
break;
}
case 2: { /* lower and upper limits */
low = luaL_checkinteger(L, 1);
up = luaL_checkinteger(L, 2);
break;
}
default: return luaL_error(L, "wrong number of arguments");
}
/* random integer in the interval [low, up] */
luaL_argcheck(L, low <= up, 1, "interval is empty");
/* project random integer into the interval [0, up - low] */
p = project(I2UInt(rv), (lua_Unsigned)up - (lua_Unsigned)low, state);
lua_pushinteger(L, p + (lua_Unsigned)low);
return 1;
/* random integer in the interval [low, up] */
luaL_argcheck(L, low <= up, 1, "interval is empty");
/* project random integer into the interval [0, up - low] */
p = project(I2UInt(rv), (lua_Unsigned)up - (lua_Unsigned)low, state);
lua_pushinteger(L, p + (lua_Unsigned)low);
return 1;
}
static void setseed (lua_State *L, Rand64 *state,
lua_Unsigned n1, lua_Unsigned n2) {
int i;
state[0] = Int2I(n1);
state[1] = Int2I(0xff); /* avoid a zero state */
state[2] = Int2I(n2);
state[3] = Int2I(0);
for (i = 0; i < 16; i++)
nextrand(state); /* discard initial values to "spread" seed */
lua_pushinteger(L, n1);
lua_pushinteger(L, n2);
static void setseed(lua_State *L, Rand64 *state,
lua_Unsigned n1, lua_Unsigned n2) {
int i;
state[0] = Int2I(n1);
state[1] = Int2I(0xff); /* avoid a zero state */
state[2] = Int2I(n2);
state[3] = Int2I(0);
for (i = 0; i < 16; i++)
nextrand(state); /* discard initial values to "spread" seed */
lua_pushinteger(L, n1);
lua_pushinteger(L, n2);
}
@ -625,42 +622,41 @@ static void setseed (lua_State *L, Rand64 *state,
** and the address of 'L' (in case the machine does address space layout
** randomization).
*/
static void randseed (lua_State *L, RanState *state) {
lua_Unsigned seed1 = (lua_Unsigned)time(NULL);
lua_Unsigned seed2 = (lua_Unsigned)(size_t)L;
setseed(L, state->s, seed1, seed2);
static void randseed(lua_State *L, RanState *state) {
lua_Unsigned seed1 = (lua_Unsigned)time(NULL);
lua_Unsigned seed2 = (lua_Unsigned)(size_t)L;
setseed(L, state->s, seed1, seed2);
}
static int math_randomseed (lua_State *L) {
RanState *state = (RanState *)lua_touserdata(L, lua_upvalueindex(1));
if (lua_isnone(L, 1)) {
randseed(L, state);
}
else {
lua_Integer n1 = luaL_checkinteger(L, 1);
lua_Integer n2 = luaL_optinteger(L, 2, 0);
setseed(L, state->s, n1, n2);
}
return 2; /* return seeds */
static int math_randomseed(lua_State *L) {
RanState *state = (RanState *)lua_touserdata(L, lua_upvalueindex(1));
if (lua_isnone(L, 1)) {
randseed(L, state);
} else {
lua_Integer n1 = luaL_checkinteger(L, 1);
lua_Integer n2 = luaL_optinteger(L, 2, 0);
setseed(L, state->s, n1, n2);
}
return 2; /* return seeds */
}
static const luaL_Reg randfuncs[] = {
{"random", math_random},
{"randomseed", math_randomseed},
{NULL, NULL}
{"random", math_random},
{"randomseed", math_randomseed},
{NULL, NULL}
};
/*
** Register the random functions and initialize their state.
*/
static void setrandfunc (lua_State *L) {
RanState *state = (RanState *)lua_newuserdatauv(L, sizeof(RanState), 0);
randseed(L, state); /* initialize with a "random" seed */
lua_pop(L, 2); /* remove pushed seeds */
luaL_setfuncs(L, randfuncs, 1);
static void setrandfunc(lua_State *L) {
RanState *state = (RanState *)lua_newuserdatauv(L, sizeof(RanState), 0);
randseed(L, state); /* initialize with a "random" seed */
lua_pop(L, 2); /* remove pushed seeds */
luaL_setfuncs(L, randfuncs, 1);
}
/* }================================================================== */
@ -673,45 +669,45 @@ static void setrandfunc (lua_State *L) {
*/
#if defined(LUA_COMPAT_MATHLIB)
static int math_cosh (lua_State *L) {
lua_pushnumber(L, l_mathop(cosh)(luaL_checknumber(L, 1)));
return 1;
static int math_cosh(lua_State *L) {
lua_pushnumber(L, l_mathop(cosh)(luaL_checknumber(L, 1)));
return 1;
}
static int math_sinh (lua_State *L) {
lua_pushnumber(L, l_mathop(sinh)(luaL_checknumber(L, 1)));
return 1;
static int math_sinh(lua_State *L) {
lua_pushnumber(L, l_mathop(sinh)(luaL_checknumber(L, 1)));
return 1;
}
static int math_tanh (lua_State *L) {
lua_pushnumber(L, l_mathop(tanh)(luaL_checknumber(L, 1)));
return 1;
static int math_tanh(lua_State *L) {
lua_pushnumber(L, l_mathop(tanh)(luaL_checknumber(L, 1)));
return 1;
}
static int math_pow (lua_State *L) {
lua_Number x = luaL_checknumber(L, 1);
lua_Number y = luaL_checknumber(L, 2);
lua_pushnumber(L, l_mathop(pow)(x, y));
return 1;
static int math_pow(lua_State *L) {
lua_Number x = luaL_checknumber(L, 1);
lua_Number y = luaL_checknumber(L, 2);
lua_pushnumber(L, l_mathop(pow)(x, y));
return 1;
}
static int math_frexp (lua_State *L) {
int e;
lua_pushnumber(L, l_mathop(frexp)(luaL_checknumber(L, 1), &e));
lua_pushinteger(L, e);
return 2;
static int math_frexp(lua_State *L) {
int e;
lua_pushnumber(L, l_mathop(frexp)(luaL_checknumber(L, 1), &e));
lua_pushinteger(L, e);
return 2;
}
static int math_ldexp (lua_State *L) {
lua_Number x = luaL_checknumber(L, 1);
int ep = (int)luaL_checkinteger(L, 2);
lua_pushnumber(L, l_mathop(ldexp)(x, ep));
return 1;
static int math_ldexp(lua_State *L) {
lua_Number x = luaL_checknumber(L, 1);
int ep = (int)luaL_checkinteger(L, 2);
lua_pushnumber(L, l_mathop(ldexp)(x, ep));
return 1;
}
static int math_log10 (lua_State *L) {
lua_pushnumber(L, l_mathop(log10)(luaL_checknumber(L, 1)));
return 1;
static int math_log10(lua_State *L) {
lua_pushnumber(L, l_mathop(log10)(luaL_checknumber(L, 1)));
return 1;
}
#endif
@ -720,62 +716,62 @@ static int math_log10 (lua_State *L) {
static const luaL_Reg mathlib[] = {
{"abs", math_abs},
{"acos", math_acos},
{"asin", math_asin},
{"atan", math_atan},
{"ceil", math_ceil},
{"cos", math_cos},
{"deg", math_deg},
{"exp", math_exp},
{"tointeger", math_toint},
{"floor", math_floor},
{"fmod", math_fmod},
{"ult", math_ult},
{"log", math_log},
{"max", math_max},
{"min", math_min},
{"modf", math_modf},
{"rad", math_rad},
{"sin", math_sin},
{"sqrt", math_sqrt},
{"tan", math_tan},
{"type", math_type},
{"abs", math_abs},
{"acos", math_acos},
{"asin", math_asin},
{"atan", math_atan},
{"ceil", math_ceil},
{"cos", math_cos},
{"deg", math_deg},
{"exp", math_exp},
{"tointeger", math_toint},
{"floor", math_floor},
{"fmod", math_fmod},
{"ult", math_ult},
{"log", math_log},
{"max", math_max},
{"min", math_min},
{"modf", math_modf},
{"rad", math_rad},
{"sin", math_sin},
{"sqrt", math_sqrt},
{"tan", math_tan},
{"type", math_type},
#if defined(LUA_COMPAT_MATHLIB)
{"atan2", math_atan},
{"cosh", math_cosh},
{"sinh", math_sinh},
{"tanh", math_tanh},
{"pow", math_pow},
{"frexp", math_frexp},
{"ldexp", math_ldexp},
{"log10", math_log10},
{"atan2", math_atan},
{"cosh", math_cosh},
{"sinh", math_sinh},
{"tanh", math_tanh},
{"pow", math_pow},
{"frexp", math_frexp},
{"ldexp", math_ldexp},
{"log10", math_log10},
#endif
/* placeholders */
{"random", NULL},
{"randomseed", NULL},
{"pi", NULL},
{"huge", NULL},
{"maxinteger", NULL},
{"mininteger", NULL},
{NULL, NULL}
/* placeholders */
{"random", NULL},
{"randomseed", NULL},
{"pi", NULL},
{"huge", NULL},
{"maxinteger", NULL},
{"mininteger", NULL},
{NULL, NULL}
};
/*
** Open math library
*/
LUAMOD_API int luaopen_math (lua_State *L) {
luaL_newlib(L, mathlib);
lua_pushnumber(L, PI);
lua_setfield(L, -2, "pi");
lua_pushnumber(L, (lua_Number)HUGE_VAL);
lua_setfield(L, -2, "huge");
lua_pushinteger(L, LUA_MAXINTEGER);
lua_setfield(L, -2, "maxinteger");
lua_pushinteger(L, LUA_MININTEGER);
lua_setfield(L, -2, "mininteger");
setrandfunc(L);
return 1;
LUAMOD_API int luaopen_math(lua_State *L) {
luaL_newlib(L, mathlib);
lua_pushnumber(L, PI);
lua_setfield(L, -2, "pi");
lua_pushnumber(L, (lua_Number)HUGE_VAL);
lua_setfield(L, -2, "huge");
lua_pushinteger(L, LUA_MAXINTEGER);
lua_setfield(L, -2, "maxinteger");
lua_pushinteger(L, LUA_MININTEGER);
lua_setfield(L, -2, "mininteger");
setrandfunc(L);
return 1;
}

View file

@ -66,11 +66,11 @@
** fail) and when it cannot try again; this fail will trigger 'tryagain'
** and a full GC cycle at every allocation.
*/
static void *firsttry (global_State *g, void *block, size_t os, size_t ns) {
if (ns > 0 && cantryagain(g))
return NULL; /* fail */
else /* normal allocation */
return callfrealloc(g, block, os, ns);
static void *firsttry(global_State *g, void *block, size_t os, size_t ns) {
if (ns > 0 && cantryagain(g))
return NULL; /* fail */
else /* normal allocation */
return callfrealloc(g, block, os, ns);
}
#else
#define firsttry(g,block,os,ns) callfrealloc(g, block, os, ns)
@ -94,28 +94,27 @@ static void *firsttry (global_State *g, void *block, size_t os, size_t ns) {
#define MINSIZEARRAY 4
void *luaM_growaux_ (lua_State *L, void *block, int nelems, int *psize,
int size_elems, int limit, const char *what) {
void *newblock;
int size = *psize;
if (nelems + 1 <= size) /* does one extra element still fit? */
return block; /* nothing to be done */
if (size >= limit / 2) { /* cannot double it? */
if (l_unlikely(size >= limit)) /* cannot grow even a little? */
luaG_runerror(L, "too many %s (limit is %d)", what, limit);
size = limit; /* still have at least one free place */
}
else {
size *= 2;
if (size < MINSIZEARRAY)
size = MINSIZEARRAY; /* minimum size */
}
lua_assert(nelems + 1 <= size && size <= limit);
/* 'limit' ensures that multiplication will not overflow */
newblock = luaM_saferealloc_(L, block, cast_sizet(*psize) * size_elems,
cast_sizet(size) * size_elems);
*psize = size; /* update only when everything else is OK */
return newblock;
void *luaM_growaux_(lua_State *L, void *block, int nelems, int *psize,
int size_elems, int limit, const char *what) {
void *newblock;
int size = *psize;
if (nelems + 1 <= size) /* does one extra element still fit? */
return block; /* nothing to be done */
if (size >= limit / 2) { /* cannot double it? */
if (l_unlikely(size >= limit)) /* cannot grow even a little? */
luaG_runerror(L, "too many %s (limit is %d)", what, limit);
size = limit; /* still have at least one free place */
} else {
size *= 2;
if (size < MINSIZEARRAY)
size = MINSIZEARRAY; /* minimum size */
}
lua_assert(nelems + 1 <= size && size <= limit);
/* 'limit' ensures that multiplication will not overflow */
newblock = luaM_saferealloc_(L, block, cast_sizet(*psize) * size_elems,
cast_sizet(size) * size_elems);
*psize = size; /* update only when everything else is OK */
return newblock;
}
@ -125,33 +124,33 @@ void *luaM_growaux_ (lua_State *L, void *block, int nelems, int *psize,
** to its number of elements, the only option is to raise an
** error.
*/
void *luaM_shrinkvector_ (lua_State *L, void *block, int *size,
int final_n, int size_elem) {
void *newblock;
size_t oldsize = cast_sizet((*size) * size_elem);
size_t newsize = cast_sizet(final_n * size_elem);
lua_assert(newsize <= oldsize);
newblock = luaM_saferealloc_(L, block, oldsize, newsize);
*size = final_n;
return newblock;
void *luaM_shrinkvector_(lua_State *L, void *block, int *size,
int final_n, int size_elem) {
void *newblock;
size_t oldsize = cast_sizet((*size) * size_elem);
size_t newsize = cast_sizet(final_n * size_elem);
lua_assert(newsize <= oldsize);
newblock = luaM_saferealloc_(L, block, oldsize, newsize);
*size = final_n;
return newblock;
}
/* }================================================================== */
l_noret luaM_toobig (lua_State *L) {
luaG_runerror(L, "memory allocation error: block too big");
l_noret luaM_toobig(lua_State *L) {
luaG_runerror(L, "memory allocation error: block too big");
}
/*
** Free memory
*/
void luaM_free_ (lua_State *L, void *block, size_t osize) {
global_State *g = G(L);
lua_assert((osize == 0) == (block == NULL));
callfrealloc(g, block, osize, 0);
g->GCdebt -= osize;
void luaM_free_(lua_State *L, void *block, size_t osize) {
global_State *g = G(L);
lua_assert((osize == 0) == (block == NULL));
callfrealloc(g, block, osize, 0);
g->GCdebt -= osize;
}
@ -159,57 +158,56 @@ void luaM_free_ (lua_State *L, void *block, size_t osize) {
** In case of allocation fail, this function will do an emergency
** collection to free some memory and then try the allocation again.
*/
static void *tryagain (lua_State *L, void *block,
size_t osize, size_t nsize) {
global_State *g = G(L);
if (cantryagain(g)) {
luaC_fullgc(L, 1); /* try to free some memory... */
return callfrealloc(g, block, osize, nsize); /* try again */
}
else return NULL; /* cannot run an emergency collection */
static void *tryagain(lua_State *L, void *block,
size_t osize, size_t nsize) {
global_State *g = G(L);
if (cantryagain(g)) {
luaC_fullgc(L, 1); /* try to free some memory... */
return callfrealloc(g, block, osize, nsize); /* try again */
} else return NULL; /* cannot run an emergency collection */
}
/*
** Generic allocation routine.
*/
void *luaM_realloc_ (lua_State *L, void *block, size_t osize, size_t nsize) {
void *newblock;
global_State *g = G(L);
lua_assert((osize == 0) == (block == NULL));
newblock = firsttry(g, block, osize, nsize);
if (l_unlikely(newblock == NULL && nsize > 0)) {
newblock = tryagain(L, block, osize, nsize);
if (newblock == NULL) /* still no memory? */
return NULL; /* do not update 'GCdebt' */
}
lua_assert((nsize == 0) == (newblock == NULL));
g->GCdebt = (g->GCdebt + nsize) - osize;
return newblock;
}
void *luaM_saferealloc_ (lua_State *L, void *block, size_t osize,
size_t nsize) {
void *newblock = luaM_realloc_(L, block, osize, nsize);
if (l_unlikely(newblock == NULL && nsize > 0)) /* allocation failed? */
luaM_error(L);
return newblock;
}
void *luaM_malloc_ (lua_State *L, size_t size, int tag) {
if (size == 0)
return NULL; /* that's all */
else {
void *luaM_realloc_(lua_State *L, void *block, size_t osize, size_t nsize) {
void *newblock;
global_State *g = G(L);
void *newblock = firsttry(g, NULL, tag, size);
if (l_unlikely(newblock == NULL)) {
newblock = tryagain(L, NULL, tag, size);
if (newblock == NULL)
luaM_error(L);
lua_assert((osize == 0) == (block == NULL));
newblock = firsttry(g, block, osize, nsize);
if (l_unlikely(newblock == NULL && nsize > 0)) {
newblock = tryagain(L, block, osize, nsize);
if (newblock == NULL) /* still no memory? */
return NULL; /* do not update 'GCdebt' */
}
g->GCdebt += size;
lua_assert((nsize == 0) == (newblock == NULL));
g->GCdebt = (g->GCdebt + nsize) - osize;
return newblock;
}
}
void *luaM_saferealloc_(lua_State *L, void *block, size_t osize,
size_t nsize) {
void *newblock = luaM_realloc_(L, block, osize, nsize);
if (l_unlikely(newblock == NULL && nsize > 0)) /* allocation failed? */
luaM_error(L);
return newblock;
}
void *luaM_malloc_(lua_State *L, size_t size, int tag) {
if (size == 0)
return NULL; /* that's all */
else {
global_State *g = G(L);
void *newblock = firsttry(g, NULL, tag, size);
if (l_unlikely(newblock == NULL)) {
newblock = tryagain(L, NULL, tag, size);
if (newblock == NULL)
luaM_error(L);
}
g->GCdebt += size;
return newblock;
}
}

View file

@ -74,20 +74,20 @@
#define luaM_shrinkvector(L,v,size,fs,t) \
((v)=cast(t *, luaM_shrinkvector_(L, v, &(size), fs, sizeof(t))))
LUAI_FUNC l_noret luaM_toobig (lua_State *L);
LUAI_FUNC l_noret luaM_toobig(lua_State *L);
/* not to be called directly */
LUAI_FUNC void *luaM_realloc_ (lua_State *L, void *block, size_t oldsize,
size_t size);
LUAI_FUNC void *luaM_saferealloc_ (lua_State *L, void *block, size_t oldsize,
size_t size);
LUAI_FUNC void luaM_free_ (lua_State *L, void *block, size_t osize);
LUAI_FUNC void *luaM_growaux_ (lua_State *L, void *block, int nelems,
int *size, int size_elem, int limit,
const char *what);
LUAI_FUNC void *luaM_shrinkvector_ (lua_State *L, void *block, int *nelem,
int final_n, int size_elem);
LUAI_FUNC void *luaM_malloc_ (lua_State *L, size_t size, int tag);
LUAI_FUNC void *luaM_realloc_(lua_State *L, void *block, size_t oldsize,
size_t size);
LUAI_FUNC void *luaM_saferealloc_(lua_State *L, void *block, size_t oldsize,
size_t size);
LUAI_FUNC void luaM_free_(lua_State *L, void *block, size_t osize);
LUAI_FUNC void *luaM_growaux_(lua_State *L, void *block, int nelems,
int *size, int size_elem, int limit,
const char *what);
LUAI_FUNC void *luaM_shrinkvector_(lua_State *L, void *block, int *nelem,
int final_n, int size_elem);
LUAI_FUNC void *luaM_malloc_(lua_State *L, size_t size, int tag);
#endif

View file

@ -72,7 +72,7 @@ typedef void (*voidf)(void);
/*
** unload library 'lib'
*/
static void lsys_unloadlib (void *lib);
static void lsys_unloadlib(void *lib);
/*
** load C library in file 'path'. If 'seeglb', load with all names in
@ -80,14 +80,14 @@ static void lsys_unloadlib (void *lib);
** Returns the library; in case of error, returns NULL plus an
** error string in the stack.
*/
static void *lsys_load (lua_State *L, const char *path, int seeglb);
static void *lsys_load(lua_State *L, const char *path, int seeglb);
/*
** Try to find a function named 'sym' in library 'lib'.
** Returns the function; in case of error, returns NULL plus an
** error string in the stack.
*/
static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym);
static lua_CFunction lsys_sym(lua_State *L, void *lib, const char *sym);
@ -116,24 +116,24 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym);
#endif
static void lsys_unloadlib (void *lib) {
dlclose(lib);
static void lsys_unloadlib(void *lib) {
dlclose(lib);
}
static void *lsys_load (lua_State *L, const char *path, int seeglb) {
void *lib = dlopen(path, RTLD_NOW | (seeglb ? RTLD_GLOBAL : RTLD_LOCAL));
if (l_unlikely(lib == NULL))
lua_pushstring(L, dlerror());
return lib;
static void *lsys_load(lua_State *L, const char *path, int seeglb) {
void *lib = dlopen(path, RTLD_NOW | (seeglb ? RTLD_GLOBAL : RTLD_LOCAL));
if (l_unlikely(lib == NULL))
lua_pushstring(L, dlerror());
return lib;
}
static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
lua_CFunction f = cast_func(dlsym(lib, sym));
if (l_unlikely(f == NULL))
lua_pushstring(L, dlerror());
return f;
static lua_CFunction lsys_sym(lua_State *L, void *lib, const char *sym) {
lua_CFunction f = cast_func(dlsym(lib, sym));
if (l_unlikely(f == NULL))
lua_pushstring(L, dlerror());
return f;
}
/* }====================================================== */
@ -165,50 +165,50 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
** Replace in the path (on the top of the stack) any occurrence
** of LUA_EXEC_DIR with the executable's path.
*/
static void setprogdir (lua_State *L) {
char buff[MAX_PATH + 1];
char *lb;
DWORD nsize = sizeof(buff)/sizeof(char);
DWORD n = GetModuleFileNameA(NULL, buff, nsize); /* get exec. name */
if (n == 0 || n == nsize || (lb = strrchr(buff, '\\')) == NULL)
luaL_error(L, "unable to get ModuleFileName");
else {
*lb = '\0'; /* cut name on the last '\\' to get the path */
luaL_gsub(L, lua_tostring(L, -1), LUA_EXEC_DIR, buff);
lua_remove(L, -2); /* remove original string */
}
static void setprogdir(lua_State *L) {
char buff[MAX_PATH + 1];
char *lb;
DWORD nsize = sizeof(buff) / sizeof(char);
DWORD n = GetModuleFileNameA(NULL, buff, nsize); /* get exec. name */
if (n == 0 || n == nsize || (lb = strrchr(buff, '\\')) == NULL)
luaL_error(L, "unable to get ModuleFileName");
else {
*lb = '\0'; /* cut name on the last '\\' to get the path */
luaL_gsub(L, lua_tostring(L, -1), LUA_EXEC_DIR, buff);
lua_remove(L, -2); /* remove original string */
}
}
static void pusherror (lua_State *L) {
int error = GetLastError();
char buffer[128];
if (FormatMessageA(FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM,
NULL, error, 0, buffer, sizeof(buffer)/sizeof(char), NULL))
lua_pushstring(L, buffer);
else
lua_pushfstring(L, "system error %d\n", error);
static void pusherror(lua_State *L) {
int error = GetLastError();
char buffer[128];
if (FormatMessageA(FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM,
NULL, error, 0, buffer, sizeof(buffer) / sizeof(char), NULL))
lua_pushstring(L, buffer);
else
lua_pushfstring(L, "system error %d\n", error);
}
static void lsys_unloadlib (void *lib) {
FreeLibrary((HMODULE)lib);
static void lsys_unloadlib(void *lib) {
FreeLibrary((HMODULE)lib);
}
static void *lsys_load (lua_State *L, const char *path, int seeglb) {
HMODULE lib = LoadLibraryExA(path, NULL, LUA_LLE_FLAGS);
(void)(seeglb); /* not used: symbols are 'global' by default */
if (lib == NULL) pusherror(L);
return lib;
static void *lsys_load(lua_State *L, const char *path, int seeglb) {
HMODULE lib = LoadLibraryExA(path, NULL, LUA_LLE_FLAGS);
(void)(seeglb); /* not used: symbols are 'global' by default */
if (lib == NULL) pusherror(L);
return lib;
}
static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
lua_CFunction f = (lua_CFunction)(voidf)GetProcAddress((HMODULE)lib, sym);
if (f == NULL) pusherror(L);
return f;
static lua_CFunction lsys_sym(lua_State *L, void *lib, const char *sym) {
lua_CFunction f = (lua_CFunction)(voidf)GetProcAddress((HMODULE)lib, sym);
if (f == NULL) pusherror(L);
return f;
}
/* }====================================================== */
@ -228,22 +228,24 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
#define DLMSG "dynamic libraries not enabled; check your Lua installation"
static void lsys_unloadlib (void *lib) {
(void)(lib); /* not used */
static void lsys_unloadlib(void *lib) {
(void)(lib); /* not used */
}
static void *lsys_load (lua_State *L, const char *path, int seeglb) {
(void)(path); (void)(seeglb); /* not used */
lua_pushliteral(L, DLMSG);
return NULL;
static void *lsys_load(lua_State *L, const char *path, int seeglb) {
(void)(path);
(void)(seeglb); /* not used */
lua_pushliteral(L, DLMSG);
return NULL;
}
static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
(void)(lib); (void)(sym); /* not used */
lua_pushliteral(L, DLMSG);
return NULL;
static lua_CFunction lsys_sym(lua_State *L, void *lib, const char *sym) {
(void)(lib);
(void)(sym); /* not used */
lua_pushliteral(L, DLMSG);
return NULL;
}
/* }====================================================== */
@ -273,48 +275,48 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
/*
** return registry.LUA_NOENV as a boolean
*/
static int noenv (lua_State *L) {
int b;
lua_getfield(L, LUA_REGISTRYINDEX, "LUA_NOENV");
b = lua_toboolean(L, -1);
lua_pop(L, 1); /* remove value */
return b;
static int noenv(lua_State *L) {
int b;
lua_getfield(L, LUA_REGISTRYINDEX, "LUA_NOENV");
b = lua_toboolean(L, -1);
lua_pop(L, 1); /* remove value */
return b;
}
/*
** Set a path
*/
static void setpath (lua_State *L, const char *fieldname,
const char *envname,
const char *dft) {
const char *dftmark;
const char *nver = lua_pushfstring(L, "%s%s", envname, LUA_VERSUFFIX);
const char *path = getenv(nver); /* try versioned name */
if (path == NULL) /* no versioned environment variable? */
path = getenv(envname); /* try unversioned name */
if (path == NULL || noenv(L)) /* no environment variable? */
lua_pushstring(L, dft); /* use default */
else if ((dftmark = strstr(path, LUA_PATH_SEP LUA_PATH_SEP)) == NULL)
lua_pushstring(L, path); /* nothing to change */
else { /* path contains a ";;": insert default path in its place */
size_t len = strlen(path);
luaL_Buffer b;
luaL_buffinit(L, &b);
if (path < dftmark) { /* is there a prefix before ';;'? */
luaL_addlstring(&b, path, dftmark - path); /* add it */
luaL_addchar(&b, *LUA_PATH_SEP);
static void setpath(lua_State *L, const char *fieldname,
const char *envname,
const char *dft) {
const char *dftmark;
const char *nver = lua_pushfstring(L, "%s%s", envname, LUA_VERSUFFIX);
const char *path = getenv(nver); /* try versioned name */
if (path == NULL) /* no versioned environment variable? */
path = getenv(envname); /* try unversioned name */
if (path == NULL || noenv(L)) /* no environment variable? */
lua_pushstring(L, dft); /* use default */
else if ((dftmark = strstr(path, LUA_PATH_SEP LUA_PATH_SEP)) == NULL)
lua_pushstring(L, path); /* nothing to change */
else { /* path contains a ";;": insert default path in its place */
size_t len = strlen(path);
luaL_Buffer b;
luaL_buffinit(L, &b);
if (path < dftmark) { /* is there a prefix before ';;'? */
luaL_addlstring(&b, path, dftmark - path); /* add it */
luaL_addchar(&b, *LUA_PATH_SEP);
}
luaL_addstring(&b, dft); /* add default */
if (dftmark < path + len - 2) { /* is there a suffix after ';;'? */
luaL_addchar(&b, *LUA_PATH_SEP);
luaL_addlstring(&b, dftmark + 2, (path + len - 2) - dftmark);
}
luaL_pushresult(&b);
}
luaL_addstring(&b, dft); /* add default */
if (dftmark < path + len - 2) { /* is there a suffix after ';;'? */
luaL_addchar(&b, *LUA_PATH_SEP);
luaL_addlstring(&b, dftmark + 2, (path + len - 2) - dftmark);
}
luaL_pushresult(&b);
}
setprogdir(L);
lua_setfield(L, -3, fieldname); /* package[fieldname] = path value */
lua_pop(L, 1); /* pop versioned variable name ('nver') */
setprogdir(L);
lua_setfield(L, -3, fieldname); /* package[fieldname] = path value */
lua_pop(L, 1); /* pop versioned variable name ('nver') */
}
/* }================================================================== */
@ -323,13 +325,13 @@ static void setpath (lua_State *L, const char *fieldname,
/*
** return registry.CLIBS[path]
*/
static void *checkclib (lua_State *L, const char *path) {
void *plib;
lua_getfield(L, LUA_REGISTRYINDEX, CLIBS);
lua_getfield(L, -1, path);
plib = lua_touserdata(L, -1); /* plib = CLIBS[path] */
lua_pop(L, 2); /* pop CLIBS table and 'plib' */
return plib;
static void *checkclib(lua_State *L, const char *path) {
void *plib;
lua_getfield(L, LUA_REGISTRYINDEX, CLIBS);
lua_getfield(L, -1, path);
plib = lua_touserdata(L, -1); /* plib = CLIBS[path] */
lua_pop(L, 2); /* pop CLIBS table and 'plib' */
return plib;
}
@ -337,13 +339,13 @@ static void *checkclib (lua_State *L, const char *path) {
** registry.CLIBS[path] = plib -- for queries
** registry.CLIBS[#CLIBS + 1] = plib -- also keep a list of all libraries
*/
static void addtoclib (lua_State *L, const char *path, void *plib) {
lua_getfield(L, LUA_REGISTRYINDEX, CLIBS);
lua_pushlightuserdata(L, plib);
lua_pushvalue(L, -1);
lua_setfield(L, -3, path); /* CLIBS[path] = plib */
lua_rawseti(L, -2, luaL_len(L, -2) + 1); /* CLIBS[#CLIBS + 1] = plib */
lua_pop(L, 1); /* pop CLIBS table */
static void addtoclib(lua_State *L, const char *path, void *plib) {
lua_getfield(L, LUA_REGISTRYINDEX, CLIBS);
lua_pushlightuserdata(L, plib);
lua_pushvalue(L, -1);
lua_setfield(L, -3, path); /* CLIBS[path] = plib */
lua_rawseti(L, -2, luaL_len(L, -2) + 1); /* CLIBS[#CLIBS + 1] = plib */
lua_pop(L, 1); /* pop CLIBS table */
}
@ -351,14 +353,14 @@ static void addtoclib (lua_State *L, const char *path, void *plib) {
** __gc tag method for CLIBS table: calls 'lsys_unloadlib' for all lib
** handles in list CLIBS
*/
static int gctm (lua_State *L) {
lua_Integer n = luaL_len(L, 1);
for (; n >= 1; n--) { /* for each handle, in reverse order */
lua_rawgeti(L, 1, n); /* get handle CLIBS[n] */
lsys_unloadlib(lua_touserdata(L, -1));
lua_pop(L, 1); /* pop handle */
}
return 0;
static int gctm(lua_State *L) {
lua_Integer n = luaL_len(L, 1);
for (; n >= 1; n--) { /* for each handle, in reverse order */
lua_rawgeti(L, 1, n); /* get handle CLIBS[n] */
lsys_unloadlib(lua_touserdata(L, -1));
lua_pop(L, 1); /* pop handle */
}
return 0;
}
@ -378,39 +380,38 @@ static int gctm (lua_State *L) {
** Return 0 and 'true' or a function in the stack; in case of
** errors, return an error code and an error message in the stack.
*/
static int lookforfunc (lua_State *L, const char *path, const char *sym) {
void *reg = checkclib(L, path); /* check loaded C libraries */
if (reg == NULL) { /* must load library? */
reg = lsys_load(L, path, *sym == '*'); /* global symbols if 'sym'=='*' */
if (reg == NULL) return ERRLIB; /* unable to load library */
addtoclib(L, path, reg);
}
if (*sym == '*') { /* loading only library (no function)? */
lua_pushboolean(L, 1); /* return 'true' */
return 0; /* no errors */
}
else {
lua_CFunction f = lsys_sym(L, reg, sym);
if (f == NULL)
return ERRFUNC; /* unable to find function */
lua_pushcfunction(L, f); /* else create new function */
return 0; /* no errors */
}
static int lookforfunc(lua_State *L, const char *path, const char *sym) {
void *reg = checkclib(L, path); /* check loaded C libraries */
if (reg == NULL) { /* must load library? */
reg = lsys_load(L, path, *sym == '*'); /* global symbols if 'sym'=='*' */
if (reg == NULL) return ERRLIB; /* unable to load library */
addtoclib(L, path, reg);
}
if (*sym == '*') { /* loading only library (no function)? */
lua_pushboolean(L, 1); /* return 'true' */
return 0; /* no errors */
} else {
lua_CFunction f = lsys_sym(L, reg, sym);
if (f == NULL)
return ERRFUNC; /* unable to find function */
lua_pushcfunction(L, f); /* else create new function */
return 0; /* no errors */
}
}
static int ll_loadlib (lua_State *L) {
const char *path = luaL_checkstring(L, 1);
const char *init = luaL_checkstring(L, 2);
int stat = lookforfunc(L, path, init);
if (l_likely(stat == 0)) /* no errors? */
return 1; /* return the loaded function */
else { /* error; error message is on stack top */
luaL_pushfail(L);
lua_insert(L, -2);
lua_pushstring(L, (stat == ERRLIB) ? LIB_FAIL : "init");
return 3; /* return fail, error message, and where */
}
static int ll_loadlib(lua_State *L) {
const char *path = luaL_checkstring(L, 1);
const char *init = luaL_checkstring(L, 2);
int stat = lookforfunc(L, path, init);
if (l_likely(stat == 0)) /* no errors? */
return 1; /* return the loaded function */
else { /* error; error message is on stack top */
luaL_pushfail(L);
lua_insert(L, -2);
lua_pushstring(L, (stat == ERRLIB) ? LIB_FAIL : "init");
return 3; /* return fail, error message, and where */
}
}
@ -422,11 +423,11 @@ static int ll_loadlib (lua_State *L) {
*/
static int readable (const char *filename) {
FILE *f = fopen(filename, "r"); /* try to open file */
if (f == NULL) return 0; /* open failed */
fclose(f);
return 1;
static int readable(const char *filename) {
FILE *f = fopen(filename, "r"); /* try to open file */
if (f == NULL) return 0; /* open failed */
fclose(f);
return 1;
}
@ -435,21 +436,21 @@ static int readable (const char *filename) {
** the ending ';' to '\0' to create a zero-terminated string. Return
** NULL when list ends.
*/
static const char *getnextfilename (char **path, char *end) {
char *sep;
char *name = *path;
if (name == end)
return NULL; /* no more names */
else if (*name == '\0') { /* from previous iteration? */
*name = *LUA_PATH_SEP; /* restore separator */
name++; /* skip it */
}
sep = strchr(name, *LUA_PATH_SEP); /* find next separator */
if (sep == NULL) /* separator not found? */
sep = end; /* name goes until the end */
*sep = '\0'; /* finish file name */
*path = sep; /* will start next search from here */
return name;
static const char *getnextfilename(char **path, char *end) {
char *sep;
char *name = *path;
if (name == end)
return NULL; /* no more names */
else if (*name == '\0') { /* from previous iteration? */
*name = *LUA_PATH_SEP; /* restore separator */
name++; /* skip it */
}
sep = strchr(name, *LUA_PATH_SEP); /* find next separator */
if (sep == NULL) /* separator not found? */
sep = end; /* name goes until the end */
*sep = '\0'; /* finish file name */
*path = sep; /* will start next search from here */
return name;
}
@ -459,86 +460,85 @@ static const char *getnextfilename (char **path, char *end) {
** no file 'blabla.so'
** no file 'blublu.so'
*/
static void pusherrornotfound (lua_State *L, const char *path) {
luaL_Buffer b;
luaL_buffinit(L, &b);
luaL_addstring(&b, "no file '");
luaL_addgsub(&b, path, LUA_PATH_SEP, "'\n\tno file '");
luaL_addstring(&b, "'");
luaL_pushresult(&b);
static void pusherrornotfound(lua_State *L, const char *path) {
luaL_Buffer b;
luaL_buffinit(L, &b);
luaL_addstring(&b, "no file '");
luaL_addgsub(&b, path, LUA_PATH_SEP, "'\n\tno file '");
luaL_addstring(&b, "'");
luaL_pushresult(&b);
}
static const char *searchpath (lua_State *L, const char *name,
const char *path,
const char *sep,
const char *dirsep) {
luaL_Buffer buff;
char *pathname; /* path with name inserted */
char *endpathname; /* its end */
const char *filename;
/* separator is non-empty and appears in 'name'? */
if (*sep != '\0' && strchr(name, *sep) != NULL)
name = luaL_gsub(L, name, sep, dirsep); /* replace it by 'dirsep' */
luaL_buffinit(L, &buff);
/* add path to the buffer, replacing marks ('?') with the file name */
luaL_addgsub(&buff, path, LUA_PATH_MARK, name);
luaL_addchar(&buff, '\0');
pathname = luaL_buffaddr(&buff); /* writable list of file names */
endpathname = pathname + luaL_bufflen(&buff) - 1;
while ((filename = getnextfilename(&pathname, endpathname)) != NULL) {
if (readable(filename)) /* does file exist and is readable? */
return lua_pushstring(L, filename); /* save and return name */
}
luaL_pushresult(&buff); /* push path to create error message */
pusherrornotfound(L, lua_tostring(L, -1)); /* create error message */
return NULL; /* not found */
static const char *searchpath(lua_State *L, const char *name,
const char *path,
const char *sep,
const char *dirsep) {
luaL_Buffer buff;
char *pathname; /* path with name inserted */
char *endpathname; /* its end */
const char *filename;
/* separator is non-empty and appears in 'name'? */
if (*sep != '\0' && strchr(name, *sep) != NULL)
name = luaL_gsub(L, name, sep, dirsep); /* replace it by 'dirsep' */
luaL_buffinit(L, &buff);
/* add path to the buffer, replacing marks ('?') with the file name */
luaL_addgsub(&buff, path, LUA_PATH_MARK, name);
luaL_addchar(&buff, '\0');
pathname = luaL_buffaddr(&buff); /* writable list of file names */
endpathname = pathname + luaL_bufflen(&buff) - 1;
while ((filename = getnextfilename(&pathname, endpathname)) != NULL) {
if (readable(filename)) /* does file exist and is readable? */
return lua_pushstring(L, filename); /* save and return name */
}
luaL_pushresult(&buff); /* push path to create error message */
pusherrornotfound(L, lua_tostring(L, -1)); /* create error message */
return NULL; /* not found */
}
static int ll_searchpath (lua_State *L) {
const char *f = searchpath(L, luaL_checkstring(L, 1),
luaL_checkstring(L, 2),
luaL_optstring(L, 3, "."),
luaL_optstring(L, 4, LUA_DIRSEP));
if (f != NULL) return 1;
else { /* error message is on top of the stack */
luaL_pushfail(L);
lua_insert(L, -2);
return 2; /* return fail + error message */
}
static int ll_searchpath(lua_State *L) {
const char *f = searchpath(L, luaL_checkstring(L, 1),
luaL_checkstring(L, 2),
luaL_optstring(L, 3, "."),
luaL_optstring(L, 4, LUA_DIRSEP));
if (f != NULL) return 1;
else { /* error message is on top of the stack */
luaL_pushfail(L);
lua_insert(L, -2);
return 2; /* return fail + error message */
}
}
static const char *findfile (lua_State *L, const char *name,
const char *pname,
const char *dirsep) {
const char *path;
lua_getfield(L, lua_upvalueindex(1), pname);
path = lua_tostring(L, -1);
if (l_unlikely(path == NULL))
luaL_error(L, "'package.%s' must be a string", pname);
return searchpath(L, name, path, ".", dirsep);
static const char *findfile(lua_State *L, const char *name,
const char *pname,
const char *dirsep) {
const char *path;
lua_getfield(L, lua_upvalueindex(1), pname);
path = lua_tostring(L, -1);
if (l_unlikely(path == NULL))
luaL_error(L, "'package.%s' must be a string", pname);
return searchpath(L, name, path, ".", dirsep);
}
static int checkload (lua_State *L, int stat, const char *filename) {
if (l_likely(stat)) { /* module loaded successfully? */
lua_pushstring(L, filename); /* will be 2nd argument to module */
return 2; /* return open function and file name */
}
else
return luaL_error(L, "error loading module '%s' from file '%s':\n\t%s",
static int checkload(lua_State *L, int stat, const char *filename) {
if (l_likely(stat)) { /* module loaded successfully? */
lua_pushstring(L, filename); /* will be 2nd argument to module */
return 2; /* return open function and file name */
} else
return luaL_error(L, "error loading module '%s' from file '%s':\n\t%s",
lua_tostring(L, 1), filename, lua_tostring(L, -1));
}
static int searcher_Lua (lua_State *L) {
const char *filename;
const char *name = luaL_checkstring(L, 1);
filename = findfile(L, name, "path", LUA_LSUBSEP);
if (filename == NULL) return 1; /* module not found in this path */
return checkload(L, (luaL_loadfile(L, filename) == LUA_OK), filename);
static int searcher_Lua(lua_State *L) {
const char *filename;
const char *name = luaL_checkstring(L, 1);
filename = findfile(L, name, "path", LUA_LSUBSEP);
if (filename == NULL) return 1; /* module not found in this path */
return checkload(L, (luaL_loadfile(L, filename) == LUA_OK), filename);
}
@ -550,128 +550,126 @@ static int searcher_Lua (lua_State *L) {
** fails, it also tries "luaopen_Y".) If there is no ignore mark,
** look for a function named "luaopen_modname".
*/
static int loadfunc (lua_State *L, const char *filename, const char *modname) {
const char *openfunc;
const char *mark;
modname = luaL_gsub(L, modname, ".", LUA_OFSEP);
mark = strchr(modname, *LUA_IGMARK);
if (mark) {
static int loadfunc(lua_State *L, const char *filename, const char *modname) {
const char *openfunc;
const char *mark;
modname = luaL_gsub(L, modname, ".", LUA_OFSEP);
mark = strchr(modname, *LUA_IGMARK);
if (mark) {
int stat;
openfunc = lua_pushlstring(L, modname, mark - modname);
openfunc = lua_pushfstring(L, LUA_POF"%s", openfunc);
stat = lookforfunc(L, filename, openfunc);
if (stat != ERRFUNC) return stat;
modname = mark + 1; /* else go ahead and try old-style name */
}
openfunc = lua_pushfstring(L, LUA_POF"%s", modname);
return lookforfunc(L, filename, openfunc);
}
static int searcher_C(lua_State *L) {
const char *name = luaL_checkstring(L, 1);
const char *filename = findfile(L, name, "cpath", LUA_CSUBSEP);
if (filename == NULL) return 1; /* module not found in this path */
return checkload(L, (loadfunc(L, filename, name) == 0), filename);
}
static int searcher_Croot(lua_State *L) {
const char *filename;
const char *name = luaL_checkstring(L, 1);
const char *p = strchr(name, '.');
int stat;
openfunc = lua_pushlstring(L, modname, mark - modname);
openfunc = lua_pushfstring(L, LUA_POF"%s", openfunc);
stat = lookforfunc(L, filename, openfunc);
if (stat != ERRFUNC) return stat;
modname = mark + 1; /* else go ahead and try old-style name */
}
openfunc = lua_pushfstring(L, LUA_POF"%s", modname);
return lookforfunc(L, filename, openfunc);
}
static int searcher_C (lua_State *L) {
const char *name = luaL_checkstring(L, 1);
const char *filename = findfile(L, name, "cpath", LUA_CSUBSEP);
if (filename == NULL) return 1; /* module not found in this path */
return checkload(L, (loadfunc(L, filename, name) == 0), filename);
}
static int searcher_Croot (lua_State *L) {
const char *filename;
const char *name = luaL_checkstring(L, 1);
const char *p = strchr(name, '.');
int stat;
if (p == NULL) return 0; /* is root */
lua_pushlstring(L, name, p - name);
filename = findfile(L, lua_tostring(L, -1), "cpath", LUA_CSUBSEP);
if (filename == NULL) return 1; /* root not found */
if ((stat = loadfunc(L, filename, name)) != 0) {
if (stat != ERRFUNC)
return checkload(L, 0, filename); /* real error */
else { /* open function not found */
lua_pushfstring(L, "no module '%s' in file '%s'", name, filename);
return 1;
if (p == NULL) return 0; /* is root */
lua_pushlstring(L, name, p - name);
filename = findfile(L, lua_tostring(L, -1), "cpath", LUA_CSUBSEP);
if (filename == NULL) return 1; /* root not found */
if ((stat = loadfunc(L, filename, name)) != 0) {
if (stat != ERRFUNC)
return checkload(L, 0, filename); /* real error */
else { /* open function not found */
lua_pushfstring(L, "no module '%s' in file '%s'", name, filename);
return 1;
}
}
}
lua_pushstring(L, filename); /* will be 2nd argument to module */
return 2;
}
static int searcher_preload (lua_State *L) {
const char *name = luaL_checkstring(L, 1);
lua_getfield(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE);
if (lua_getfield(L, -1, name) == LUA_TNIL) { /* not found? */
lua_pushfstring(L, "no field package.preload['%s']", name);
return 1;
}
else {
lua_pushliteral(L, ":preload:");
lua_pushstring(L, filename); /* will be 2nd argument to module */
return 2;
}
}
static void findloader (lua_State *L, const char *name) {
int i;
luaL_Buffer msg; /* to build error message */
/* push 'package.searchers' to index 3 in the stack */
if (l_unlikely(lua_getfield(L, lua_upvalueindex(1), "searchers")
!= LUA_TTABLE))
luaL_error(L, "'package.searchers' must be a table");
luaL_buffinit(L, &msg);
/* iterate over available searchers to find a loader */
for (i = 1; ; i++) {
luaL_addstring(&msg, "\n\t"); /* error-message prefix */
if (l_unlikely(lua_rawgeti(L, 3, i) == LUA_TNIL)) { /* no more searchers? */
lua_pop(L, 1); /* remove nil */
luaL_buffsub(&msg, 2); /* remove prefix */
luaL_pushresult(&msg); /* create error message */
luaL_error(L, "module '%s' not found:%s", name, lua_tostring(L, -1));
static int searcher_preload(lua_State *L) {
const char *name = luaL_checkstring(L, 1);
lua_getfield(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE);
if (lua_getfield(L, -1, name) == LUA_TNIL) { /* not found? */
lua_pushfstring(L, "no field package.preload['%s']", name);
return 1;
} else {
lua_pushliteral(L, ":preload:");
return 2;
}
lua_pushstring(L, name);
lua_call(L, 1, 2); /* call it */
if (lua_isfunction(L, -2)) /* did it find a loader? */
return; /* module loader found */
else if (lua_isstring(L, -2)) { /* searcher returned error message? */
lua_pop(L, 1); /* remove extra return */
luaL_addvalue(&msg); /* concatenate error message */
}
else { /* no error message */
lua_pop(L, 2); /* remove both returns */
luaL_buffsub(&msg, 2); /* remove prefix */
}
}
}
static int ll_require (lua_State *L) {
const char *name = luaL_checkstring(L, 1);
lua_settop(L, 1); /* LOADED table will be at index 2 */
lua_getfield(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE);
lua_getfield(L, 2, name); /* LOADED[name] */
if (lua_toboolean(L, -1)) /* is it there? */
return 1; /* package is already loaded */
/* else must load package */
lua_pop(L, 1); /* remove 'getfield' result */
findloader(L, name);
lua_rotate(L, -2, 1); /* function <-> loader data */
lua_pushvalue(L, 1); /* name is 1st argument to module loader */
lua_pushvalue(L, -3); /* loader data is 2nd argument */
/* stack: ...; loader data; loader function; mod. name; loader data */
lua_call(L, 2, 1); /* run loader to load module */
/* stack: ...; loader data; result from loader */
if (!lua_isnil(L, -1)) /* non-nil return? */
lua_setfield(L, 2, name); /* LOADED[name] = returned value */
else
lua_pop(L, 1); /* pop nil */
if (lua_getfield(L, 2, name) == LUA_TNIL) { /* module set no value? */
lua_pushboolean(L, 1); /* use true as result */
lua_copy(L, -1, -2); /* replace loader result */
lua_setfield(L, 2, name); /* LOADED[name] = true */
}
lua_rotate(L, -2, 1); /* loader data <-> module result */
return 2; /* return module result and loader data */
static void findloader(lua_State *L, const char *name) {
int i;
luaL_Buffer msg; /* to build error message */
/* push 'package.searchers' to index 3 in the stack */
if (l_unlikely(lua_getfield(L, lua_upvalueindex(1), "searchers")
!= LUA_TTABLE))
luaL_error(L, "'package.searchers' must be a table");
luaL_buffinit(L, &msg);
/* iterate over available searchers to find a loader */
for (i = 1; ; i++) {
luaL_addstring(&msg, "\n\t"); /* error-message prefix */
if (l_unlikely(lua_rawgeti(L, 3, i) == LUA_TNIL)) { /* no more searchers? */
lua_pop(L, 1); /* remove nil */
luaL_buffsub(&msg, 2); /* remove prefix */
luaL_pushresult(&msg); /* create error message */
luaL_error(L, "module '%s' not found:%s", name, lua_tostring(L, -1));
}
lua_pushstring(L, name);
lua_call(L, 1, 2); /* call it */
if (lua_isfunction(L, -2)) /* did it find a loader? */
return; /* module loader found */
else if (lua_isstring(L, -2)) { /* searcher returned error message? */
lua_pop(L, 1); /* remove extra return */
luaL_addvalue(&msg); /* concatenate error message */
} else { /* no error message */
lua_pop(L, 2); /* remove both returns */
luaL_buffsub(&msg, 2); /* remove prefix */
}
}
}
static int ll_require(lua_State *L) {
const char *name = luaL_checkstring(L, 1);
lua_settop(L, 1); /* LOADED table will be at index 2 */
lua_getfield(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE);
lua_getfield(L, 2, name); /* LOADED[name] */
if (lua_toboolean(L, -1)) /* is it there? */
return 1; /* package is already loaded */
/* else must load package */
lua_pop(L, 1); /* remove 'getfield' result */
findloader(L, name);
lua_rotate(L, -2, 1); /* function <-> loader data */
lua_pushvalue(L, 1); /* name is 1st argument to module loader */
lua_pushvalue(L, -3); /* loader data is 2nd argument */
/* stack: ...; loader data; loader function; mod. name; loader data */
lua_call(L, 2, 1); /* run loader to load module */
/* stack: ...; loader data; result from loader */
if (!lua_isnil(L, -1)) /* non-nil return? */
lua_setfield(L, 2, name); /* LOADED[name] = returned value */
else
lua_pop(L, 1); /* pop nil */
if (lua_getfield(L, 2, name) == LUA_TNIL) { /* module set no value? */
lua_pushboolean(L, 1); /* use true as result */
lua_copy(L, -1, -2); /* replace loader result */
lua_setfield(L, 2, name); /* LOADED[name] = true */
}
lua_rotate(L, -2, 1); /* loader data <-> module result */
return 2; /* return module result and loader data */
}
/* }====================================================== */
@ -680,42 +678,42 @@ static int ll_require (lua_State *L) {
static const luaL_Reg pk_funcs[] = {
{"loadlib", ll_loadlib},
{"searchpath", ll_searchpath},
/* placeholders */
{"preload", NULL},
{"cpath", NULL},
{"path", NULL},
{"searchers", NULL},
{"loaded", NULL},
{NULL, NULL}
{"loadlib", ll_loadlib},
{"searchpath", ll_searchpath},
/* placeholders */
{"preload", NULL},
{"cpath", NULL},
{"path", NULL},
{"searchers", NULL},
{"loaded", NULL},
{NULL, NULL}
};
static const luaL_Reg ll_funcs[] = {
{"require", ll_require},
{NULL, NULL}
{"require", ll_require},
{NULL, NULL}
};
static void createsearcherstable (lua_State *L) {
static const lua_CFunction searchers[] = {
searcher_preload,
searcher_Lua,
searcher_C,
searcher_Croot,
NULL
};
int i;
/* create 'searchers' table */
lua_createtable(L, sizeof(searchers)/sizeof(searchers[0]) - 1, 0);
/* fill it with predefined searchers */
for (i=0; searchers[i] != NULL; i++) {
lua_pushvalue(L, -2); /* set 'package' as upvalue for all searchers */
lua_pushcclosure(L, searchers[i], 1);
lua_rawseti(L, -2, i+1);
}
lua_setfield(L, -2, "searchers"); /* put it in field 'searchers' */
static void createsearcherstable(lua_State *L) {
static const lua_CFunction searchers[] = {
searcher_preload,
searcher_Lua,
searcher_C,
searcher_Croot,
NULL
};
int i;
/* create 'searchers' table */
lua_createtable(L, sizeof(searchers) / sizeof(searchers[0]) - 1, 0);
/* fill it with predefined searchers */
for (i = 0; searchers[i] != NULL; i++) {
lua_pushvalue(L, -2); /* set 'package' as upvalue for all searchers */
lua_pushcclosure(L, searchers[i], 1);
lua_rawseti(L, -2, i + 1);
}
lua_setfield(L, -2, "searchers"); /* put it in field 'searchers' */
}
@ -723,36 +721,36 @@ static void createsearcherstable (lua_State *L) {
** create table CLIBS to keep track of loaded C libraries,
** setting a finalizer to close all libraries when closing state.
*/
static void createclibstable (lua_State *L) {
luaL_getsubtable(L, LUA_REGISTRYINDEX, CLIBS); /* create CLIBS table */
lua_createtable(L, 0, 1); /* create metatable for CLIBS */
lua_pushcfunction(L, gctm);
lua_setfield(L, -2, "__gc"); /* set finalizer for CLIBS table */
lua_setmetatable(L, -2);
static void createclibstable(lua_State *L) {
luaL_getsubtable(L, LUA_REGISTRYINDEX, CLIBS); /* create CLIBS table */
lua_createtable(L, 0, 1); /* create metatable for CLIBS */
lua_pushcfunction(L, gctm);
lua_setfield(L, -2, "__gc"); /* set finalizer for CLIBS table */
lua_setmetatable(L, -2);
}
LUAMOD_API int luaopen_package (lua_State *L) {
createclibstable(L);
luaL_newlib(L, pk_funcs); /* create 'package' table */
createsearcherstable(L);
/* set paths */
setpath(L, "path", LUA_PATH_VAR, LUA_PATH_DEFAULT);
setpath(L, "cpath", LUA_CPATH_VAR, LUA_CPATH_DEFAULT);
/* store config information */
lua_pushliteral(L, LUA_DIRSEP "\n" LUA_PATH_SEP "\n" LUA_PATH_MARK "\n"
LUA_EXEC_DIR "\n" LUA_IGMARK "\n");
lua_setfield(L, -2, "config");
/* set field 'loaded' */
luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE);
lua_setfield(L, -2, "loaded");
/* set field 'preload' */
luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE);
lua_setfield(L, -2, "preload");
lua_pushglobaltable(L);
lua_pushvalue(L, -2); /* set 'package' as upvalue for next lib */
luaL_setfuncs(L, ll_funcs, 1); /* open lib into global table */
lua_pop(L, 1); /* pop global table */
return 1; /* return 'package' table */
LUAMOD_API int luaopen_package(lua_State *L) {
createclibstable(L);
luaL_newlib(L, pk_funcs); /* create 'package' table */
createsearcherstable(L);
/* set paths */
setpath(L, "path", LUA_PATH_VAR, LUA_PATH_DEFAULT);
setpath(L, "cpath", LUA_CPATH_VAR, LUA_CPATH_DEFAULT);
/* store config information */
lua_pushliteral(L, LUA_DIRSEP "\n" LUA_PATH_SEP "\n" LUA_PATH_MARK "\n"
LUA_EXEC_DIR "\n" LUA_IGMARK "\n");
lua_setfield(L, -2, "config");
/* set field 'loaded' */
luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE);
lua_setfield(L, -2, "loaded");
/* set field 'preload' */
luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE);
lua_setfield(L, -2, "preload");
lua_pushglobaltable(L);
lua_pushvalue(L, -2); /* set 'package' as upvalue for next lib */
luaL_setfuncs(L, ll_funcs, 1); /* open lib into global table */
lua_pop(L, 1); /* pop global table */
return 1; /* return 'package' table */
}

View file

@ -32,116 +32,143 @@
/*
** Computes ceil(log2(x))
*/
int luaO_ceillog2 (unsigned int x) {
static const lu_byte log_2[256] = { /* log_2[i] = ceil(log2(i - 1)) */
0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8
};
int l = 0;
x--;
while (x >= 256) { l += 8; x >>= 8; }
return l + log_2[x];
int luaO_ceillog2(unsigned int x) {
static const lu_byte log_2[256] = { /* log_2[i] = ceil(log2(i - 1)) */
0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8
};
int l = 0;
x--;
while (x >= 256) { l += 8; x >>= 8; }
return l + log_2[x];
}
static lua_Integer intarith (lua_State *L, int op, lua_Integer v1,
lua_Integer v2) {
switch (op) {
case LUA_OPADD: return intop(+, v1, v2);
case LUA_OPSUB:return intop(-, v1, v2);
case LUA_OPMUL:return intop(*, v1, v2);
case LUA_OPMOD: return luaV_mod(L, v1, v2);
case LUA_OPIDIV: return luaV_idiv(L, v1, v2);
case LUA_OPBAND: return intop(&, v1, v2);
case LUA_OPBOR: return intop(|, v1, v2);
case LUA_OPBXOR: return intop(^, v1, v2);
case LUA_OPSHL: return luaV_shiftl(v1, v2);
case LUA_OPSHR: return luaV_shiftr(v1, v2);
case LUA_OPUNM: return intop(-, 0, v1);
case LUA_OPBNOT: return intop(^, ~l_castS2U(0), v1);
default: lua_assert(0); return 0;
}
}
static lua_Number numarith (lua_State *L, int op, lua_Number v1,
lua_Number v2) {
switch (op) {
case LUA_OPADD: return luai_numadd(L, v1, v2);
case LUA_OPSUB: return luai_numsub(L, v1, v2);
case LUA_OPMUL: return luai_nummul(L, v1, v2);
case LUA_OPDIV: return luai_numdiv(L, v1, v2);
case LUA_OPPOW: return luai_numpow(L, v1, v2);
case LUA_OPIDIV: return luai_numidiv(L, v1, v2);
case LUA_OPUNM: return luai_numunm(L, v1);
case LUA_OPMOD: return luaV_modf(L, v1, v2);
default: lua_assert(0); return 0;
}
}
int luaO_rawarith (lua_State *L, int op, const TValue *p1, const TValue *p2,
TValue *res) {
switch (op) {
case LUA_OPBAND: case LUA_OPBOR: case LUA_OPBXOR:
case LUA_OPSHL: case LUA_OPSHR:
case LUA_OPBNOT: { /* operate only on integers */
lua_Integer i1; lua_Integer i2;
if (tointegerns(p1, &i1) && tointegerns(p2, &i2)) {
setivalue(res, intarith(L, op, i1, i2));
return 1;
}
else return 0; /* fail */
static lua_Integer intarith(lua_State *L, int op, lua_Integer v1,
lua_Integer v2) {
switch (op) {
case LUA_OPADD:
return intop(+, v1, v2);
case LUA_OPSUB:
return intop(-, v1, v2);
case LUA_OPMUL:
return intop(*, v1, v2);
case LUA_OPMOD:
return luaV_mod(L, v1, v2);
case LUA_OPIDIV:
return luaV_idiv(L, v1, v2);
case LUA_OPBAND:
return intop(&, v1, v2);
case LUA_OPBOR:
return intop( |, v1, v2);
case LUA_OPBXOR:
return intop(^, v1, v2);
case LUA_OPSHL:
return luaV_shiftl(v1, v2);
case LUA_OPSHR:
return luaV_shiftr(v1, v2);
case LUA_OPUNM:
return intop(-, 0, v1);
case LUA_OPBNOT:
return intop(^, ~l_castS2U(0), v1);
default:
lua_assert(0);
return 0;
}
case LUA_OPDIV: case LUA_OPPOW: { /* operate only on floats */
lua_Number n1; lua_Number n2;
if (tonumberns(p1, n1) && tonumberns(p2, n2)) {
setfltvalue(res, numarith(L, op, n1, n2));
return 1;
}
else return 0; /* fail */
}
static lua_Number numarith(lua_State *L, int op, lua_Number v1,
lua_Number v2) {
switch (op) {
case LUA_OPADD:
return luai_numadd(L, v1, v2);
case LUA_OPSUB:
return luai_numsub(L, v1, v2);
case LUA_OPMUL:
return luai_nummul(L, v1, v2);
case LUA_OPDIV:
return luai_numdiv(L, v1, v2);
case LUA_OPPOW:
return luai_numpow(L, v1, v2);
case LUA_OPIDIV:
return luai_numidiv(L, v1, v2);
case LUA_OPUNM:
return luai_numunm(L, v1);
case LUA_OPMOD:
return luaV_modf(L, v1, v2);
default:
lua_assert(0);
return 0;
}
default: { /* other operations */
lua_Number n1; lua_Number n2;
if (ttisinteger(p1) && ttisinteger(p2)) {
setivalue(res, intarith(L, op, ivalue(p1), ivalue(p2)));
return 1;
}
else if (tonumberns(p1, n1) && tonumberns(p2, n2)) {
setfltvalue(res, numarith(L, op, n1, n2));
return 1;
}
else return 0; /* fail */
}
int luaO_rawarith(lua_State *L, int op, const TValue *p1, const TValue *p2,
TValue *res) {
switch (op) {
case LUA_OPBAND:
case LUA_OPBOR:
case LUA_OPBXOR:
case LUA_OPSHL:
case LUA_OPSHR:
case LUA_OPBNOT: { /* operate only on integers */
lua_Integer i1;
lua_Integer i2;
if (tointegerns(p1, &i1) && tointegerns(p2, &i2)) {
setivalue(res, intarith(L, op, i1, i2));
return 1;
} else return 0; /* fail */
}
case LUA_OPDIV:
case LUA_OPPOW: { /* operate only on floats */
lua_Number n1;
lua_Number n2;
if (tonumberns(p1, n1) && tonumberns(p2, n2)) {
setfltvalue(res, numarith(L, op, n1, n2));
return 1;
} else return 0; /* fail */
}
default: { /* other operations */
lua_Number n1;
lua_Number n2;
if (ttisinteger(p1) && ttisinteger(p2)) {
setivalue(res, intarith(L, op, ivalue(p1), ivalue(p2)));
return 1;
} else if (tonumberns(p1, n1) && tonumberns(p2, n2)) {
setfltvalue(res, numarith(L, op, n1, n2));
return 1;
} else return 0; /* fail */
}
}
}
}
void luaO_arith (lua_State *L, int op, const TValue *p1, const TValue *p2,
StkId res) {
if (!luaO_rawarith(L, op, p1, p2, s2v(res))) {
/* could not perform raw operation; try metamethod */
luaT_trybinTM(L, p1, p2, res, cast(TMS, (op - LUA_OPADD) + TM_ADD));
}
void luaO_arith(lua_State *L, int op, const TValue *p1, const TValue *p2,
StkId res) {
if (!luaO_rawarith(L, op, p1, p2, s2v(res))) {
/* could not perform raw operation; try metamethod */
luaT_trybinTM(L, p1, p2, res, cast(TMS, (op - LUA_OPADD) + TM_ADD));
}
}
int luaO_hexavalue (int c) {
if (lisdigit(c)) return c - '0';
else return (ltolower(c) - 'a') + 10;
int luaO_hexavalue(int c) {
if (lisdigit(c)) return c - '0';
else return (ltolower(c) - 'a') + 10;
}
static int isneg (const char **s) {
if (**s == '-') { (*s)++; return 1; }
else if (**s == '+') (*s)++;
return 0;
static int isneg(const char **s) {
if (**s == '-') { (*s)++; return 1; }
else if (**s == '+')(*s)++;
return 0;
}
@ -162,53 +189,51 @@ static int isneg (const char **s) {
** convert a hexadecimal numeric string to a number, following
** C99 specification for 'strtod'
*/
static lua_Number lua_strx2number (const char *s, char **endptr) {
int dot = lua_getlocaledecpoint();
lua_Number r = l_mathop(0.0); /* result (accumulator) */
int sigdig = 0; /* number of significant digits */
int nosigdig = 0; /* number of non-significant digits */
int e = 0; /* exponent correction */
int neg; /* 1 if number is negative */
int hasdot = 0; /* true after seen a dot */
*endptr = cast_charp(s); /* nothing is valid yet */
while (lisspace(cast_uchar(*s))) s++; /* skip initial spaces */
neg = isneg(&s); /* check sign */
if (!(*s == '0' && (*(s + 1) == 'x' || *(s + 1) == 'X'))) /* check '0x' */
return l_mathop(0.0); /* invalid format (no '0x') */
for (s += 2; ; s++) { /* skip '0x' and read numeral */
if (*s == dot) {
if (hasdot) break; /* second dot? stop loop */
else hasdot = 1;
static lua_Number lua_strx2number(const char *s, char **endptr) {
int dot = lua_getlocaledecpoint();
lua_Number r = l_mathop(0.0); /* result (accumulator) */
int sigdig = 0; /* number of significant digits */
int nosigdig = 0; /* number of non-significant digits */
int e = 0; /* exponent correction */
int neg; /* 1 if number is negative */
int hasdot = 0; /* true after seen a dot */
*endptr = cast_charp(s); /* nothing is valid yet */
while (lisspace(cast_uchar(*s))) s++; /* skip initial spaces */
neg = isneg(&s); /* check sign */
if (!(*s == '0' && (*(s + 1) == 'x' || *(s + 1) == 'X'))) /* check '0x' */
return l_mathop(0.0); /* invalid format (no '0x') */
for (s += 2; ; s++) { /* skip '0x' and read numeral */
if (*s == dot) {
if (hasdot) break; /* second dot? stop loop */
else hasdot = 1;
} else if (lisxdigit(cast_uchar(*s))) {
if (sigdig == 0 && *s == '0') /* non-significant digit (zero)? */
nosigdig++;
else if (++sigdig <= MAXSIGDIG) /* can read it without overflow? */
r = (r * l_mathop(16.0)) + luaO_hexavalue(*s);
else e++; /* too many digits; ignore, but still count for exponent */
if (hasdot) e--; /* decimal digit? correct exponent */
} else break; /* neither a dot nor a digit */
}
else if (lisxdigit(cast_uchar(*s))) {
if (sigdig == 0 && *s == '0') /* non-significant digit (zero)? */
nosigdig++;
else if (++sigdig <= MAXSIGDIG) /* can read it without overflow? */
r = (r * l_mathop(16.0)) + luaO_hexavalue(*s);
else e++; /* too many digits; ignore, but still count for exponent */
if (hasdot) e--; /* decimal digit? correct exponent */
}
else break; /* neither a dot nor a digit */
}
if (nosigdig + sigdig == 0) /* no digits? */
return l_mathop(0.0); /* invalid format */
*endptr = cast_charp(s); /* valid up to here */
e *= 4; /* each digit multiplies/divides value by 2^4 */
if (*s == 'p' || *s == 'P') { /* exponent part? */
int exp1 = 0; /* exponent value */
int neg1; /* exponent sign */
s++; /* skip 'p' */
neg1 = isneg(&s); /* sign */
if (!lisdigit(cast_uchar(*s)))
return l_mathop(0.0); /* invalid; must have at least one digit */
while (lisdigit(cast_uchar(*s))) /* read exponent */
exp1 = exp1 * 10 + *(s++) - '0';
if (neg1) exp1 = -exp1;
e += exp1;
if (nosigdig + sigdig == 0) /* no digits? */
return l_mathop(0.0); /* invalid format */
*endptr = cast_charp(s); /* valid up to here */
}
if (neg) r = -r;
return l_mathop(ldexp)(r, e);
e *= 4; /* each digit multiplies/divides value by 2^4 */
if (*s == 'p' || *s == 'P') { /* exponent part? */
int exp1 = 0; /* exponent value */
int neg1; /* exponent sign */
s++; /* skip 'p' */
neg1 = isneg(&s); /* sign */
if (!lisdigit(cast_uchar(*s)))
return l_mathop(0.0); /* invalid; must have at least one digit */
while (lisdigit(cast_uchar(*s))) /* read exponent */
exp1 = exp1 * 10 + *(s++) - '0';
if (neg1) exp1 = -exp1;
e += exp1;
*endptr = cast_charp(s); /* valid up to here */
}
if (neg) r = -r;
return l_mathop(ldexp)(r, e);
}
#endif
@ -225,13 +250,13 @@ static lua_Number lua_strx2number (const char *s, char **endptr) {
** fail or the address of the ending '\0' on success. ('mode' == 'x')
** means a hexadecimal numeral.
*/
static const char *l_str2dloc (const char *s, lua_Number *result, int mode) {
char *endptr;
*result = (mode == 'x') ? lua_strx2number(s, &endptr) /* try to convert */
: lua_str2number(s, &endptr);
if (endptr == s) return NULL; /* nothing recognized? */
while (lisspace(cast_uchar(*endptr))) endptr++; /* skip trailing spaces */
return (*endptr == '\0') ? endptr : NULL; /* OK iff no trailing chars */
static const char *l_str2dloc(const char *s, lua_Number *result, int mode) {
char *endptr;
*result = (mode == 'x') ? lua_strx2number(s, &endptr) /* try to convert */
: lua_str2number(s, &endptr);
if (endptr == s) return NULL; /* nothing recognized? */
while (lisspace(cast_uchar(*endptr))) endptr++; /* skip trailing spaces */
return (*endptr == '\0') ? endptr : NULL; /* OK iff no trailing chars */
}
@ -248,93 +273,91 @@ static const char *l_str2dloc (const char *s, lua_Number *result, int mode) {
** - 'x' means a hexadecimal numeral
** - '.' just optimizes the search for the common case (no special chars)
*/
static const char *l_str2d (const char *s, lua_Number *result) {
const char *endptr;
const char *pmode = strpbrk(s, ".xXnN"); /* look for special chars */
int mode = pmode ? ltolower(cast_uchar(*pmode)) : 0;
if (mode == 'n') /* reject 'inf' and 'nan' */
return NULL;
endptr = l_str2dloc(s, result, mode); /* try to convert */
if (endptr == NULL) { /* failed? may be a different locale */
char buff[L_MAXLENNUM + 1];
const char *pdot = strchr(s, '.');
if (pdot == NULL || strlen(s) > L_MAXLENNUM)
return NULL; /* string too long or no dot; fail */
strcpy(buff, s); /* copy string to buffer */
buff[pdot - s] = lua_getlocaledecpoint(); /* correct decimal point */
endptr = l_str2dloc(buff, result, mode); /* try again */
if (endptr != NULL)
endptr = s + (endptr - buff); /* make relative to 's' */
}
return endptr;
static const char *l_str2d(const char *s, lua_Number *result) {
const char *endptr;
const char *pmode = strpbrk(s, ".xXnN"); /* look for special chars */
int mode = pmode ? ltolower(cast_uchar(*pmode)) : 0;
if (mode == 'n') /* reject 'inf' and 'nan' */
return NULL;
endptr = l_str2dloc(s, result, mode); /* try to convert */
if (endptr == NULL) { /* failed? may be a different locale */
char buff[L_MAXLENNUM + 1];
const char *pdot = strchr(s, '.');
if (pdot == NULL || strlen(s) > L_MAXLENNUM)
return NULL; /* string too long or no dot; fail */
strcpy(buff, s); /* copy string to buffer */
buff[pdot - s] = lua_getlocaledecpoint(); /* correct decimal point */
endptr = l_str2dloc(buff, result, mode); /* try again */
if (endptr != NULL)
endptr = s + (endptr - buff); /* make relative to 's' */
}
return endptr;
}
#define MAXBY10 cast(lua_Unsigned, LUA_MAXINTEGER / 10)
#define MAXLASTD cast_int(LUA_MAXINTEGER % 10)
static const char *l_str2int (const char *s, lua_Integer *result) {
lua_Unsigned a = 0;
int empty = 1;
int neg;
while (lisspace(cast_uchar(*s))) s++; /* skip initial spaces */
neg = isneg(&s);
if (s[0] == '0' &&
(s[1] == 'x' || s[1] == 'X')) { /* hex? */
s += 2; /* skip '0x' */
for (; lisxdigit(cast_uchar(*s)); s++) {
a = a * 16 + luaO_hexavalue(*s);
empty = 0;
static const char *l_str2int(const char *s, lua_Integer *result) {
lua_Unsigned a = 0;
int empty = 1;
int neg;
while (lisspace(cast_uchar(*s))) s++; /* skip initial spaces */
neg = isneg(&s);
if (s[0] == '0' &&
(s[1] == 'x' || s[1] == 'X')) { /* hex? */
s += 2; /* skip '0x' */
for (; lisxdigit(cast_uchar(*s)); s++) {
a = a * 16 + luaO_hexavalue(*s);
empty = 0;
}
} else { /* decimal */
for (; lisdigit(cast_uchar(*s)); s++) {
int d = *s - '0';
if (a >= MAXBY10 && (a > MAXBY10 || d > MAXLASTD + neg)) /* overflow? */
return NULL; /* do not accept it (as integer) */
a = a * 10 + d;
empty = 0;
}
}
}
else { /* decimal */
for (; lisdigit(cast_uchar(*s)); s++) {
int d = *s - '0';
if (a >= MAXBY10 && (a > MAXBY10 || d > MAXLASTD + neg)) /* overflow? */
return NULL; /* do not accept it (as integer) */
a = a * 10 + d;
empty = 0;
while (lisspace(cast_uchar(*s))) s++; /* skip trailing spaces */
if (empty || *s != '\0') return NULL; /* something wrong in the numeral */
else {
*result = l_castU2S((neg) ? 0u - a : a);
return s;
}
}
while (lisspace(cast_uchar(*s))) s++; /* skip trailing spaces */
if (empty || *s != '\0') return NULL; /* something wrong in the numeral */
else {
*result = l_castU2S((neg) ? 0u - a : a);
return s;
}
}
size_t luaO_str2num (const char *s, TValue *o) {
lua_Integer i; lua_Number n;
const char *e;
if ((e = l_str2int(s, &i)) != NULL) { /* try as an integer */
setivalue(o, i);
}
else if ((e = l_str2d(s, &n)) != NULL) { /* else try as a float */
setfltvalue(o, n);
}
else
return 0; /* conversion failed */
return (e - s) + 1; /* success; return string size */
size_t luaO_str2num(const char *s, TValue *o) {
lua_Integer i;
lua_Number n;
const char *e;
if ((e = l_str2int(s, &i)) != NULL) { /* try as an integer */
setivalue(o, i);
} else if ((e = l_str2d(s, &n)) != NULL) { /* else try as a float */
setfltvalue(o, n);
} else
return 0; /* conversion failed */
return (e - s) + 1; /* success; return string size */
}
int luaO_utf8esc (char *buff, unsigned long x) {
int n = 1; /* number of bytes put in buffer (backwards) */
lua_assert(x <= 0x7FFFFFFFu);
if (x < 0x80) /* ascii? */
buff[UTF8BUFFSZ - 1] = cast_char(x);
else { /* need continuation bytes */
unsigned int mfb = 0x3f; /* maximum that fits in first byte */
do { /* add continuation bytes */
buff[UTF8BUFFSZ - (n++)] = cast_char(0x80 | (x & 0x3f));
x >>= 6; /* remove added bits */
mfb >>= 1; /* now there is one less bit available in first byte */
} while (x > mfb); /* still needs continuation byte? */
buff[UTF8BUFFSZ - n] = cast_char((~mfb << 1) | x); /* add first byte */
}
return n;
int luaO_utf8esc(char *buff, unsigned long x) {
int n = 1; /* number of bytes put in buffer (backwards) */
lua_assert(x <= 0x7FFFFFFFu);
if (x < 0x80) /* ascii? */
buff[UTF8BUFFSZ - 1] = cast_char(x);
else { /* need continuation bytes */
unsigned int mfb = 0x3f; /* maximum that fits in first byte */
do { /* add continuation bytes */
buff[UTF8BUFFSZ - (n++)] = cast_char(0x80 | (x & 0x3f));
x >>= 6; /* remove added bits */
mfb >>= 1; /* now there is one less bit available in first byte */
} while (x > mfb); /* still needs continuation byte? */
buff[UTF8BUFFSZ - n] = cast_char((~mfb << 1) | x); /* add first byte */
}
return n;
}
@ -352,29 +375,29 @@ int luaO_utf8esc (char *buff, unsigned long x) {
/*
** Convert a number object to a string, adding it to a buffer
*/
static int tostringbuff (TValue *obj, char *buff) {
int len;
lua_assert(ttisnumber(obj));
if (ttisinteger(obj))
len = lua_integer2str(buff, MAXNUMBER2STR, ivalue(obj));
else {
len = lua_number2str(buff, MAXNUMBER2STR, fltvalue(obj));
if (buff[strspn(buff, "-0123456789")] == '\0') { /* looks like an int? */
buff[len++] = lua_getlocaledecpoint();
buff[len++] = '0'; /* adds '.0' to result */
static int tostringbuff(TValue *obj, char *buff) {
int len;
lua_assert(ttisnumber(obj));
if (ttisinteger(obj))
len = lua_integer2str(buff, MAXNUMBER2STR, ivalue(obj));
else {
len = lua_number2str(buff, MAXNUMBER2STR, fltvalue(obj));
if (buff[strspn(buff, "-0123456789")] == '\0') { /* looks like an int? */
buff[len++] = lua_getlocaledecpoint();
buff[len++] = '0'; /* adds '.0' to result */
}
}
}
return len;
return len;
}
/*
** Convert a number object to a Lua string, replacing the value at 'obj'
*/
void luaO_tostring (lua_State *L, TValue *obj) {
char buff[MAXNUMBER2STR];
int len = tostringbuff(obj, buff);
setsvalue(L, obj, luaS_newlstr(L, buff, len));
void luaO_tostring(lua_State *L, TValue *obj) {
char buff[MAXNUMBER2STR];
int len = tostringbuff(obj, buff);
setsvalue(L, obj, luaS_newlstr(L, buff, len));
}
@ -395,10 +418,10 @@ void luaO_tostring (lua_State *L, TValue *obj) {
/* buffer used by 'luaO_pushvfstring' */
typedef struct BuffFS {
lua_State *L;
int pushed; /* true if there is a part of the result on the stack */
int blen; /* length of partial string in 'space' */
char space[BUFVFS]; /* holds last part of the result */
lua_State *L;
int pushed; /* true if there is a part of the result on the stack */
int blen; /* length of partial string in 'space' */
char space[BUFVFS]; /* holds last part of the result */
} BuffFS;
@ -411,23 +434,23 @@ typedef struct BuffFS {
** long. In that case, 'luaV_concat' frees the extra slot before
** raising the error.
*/
static void pushstr (BuffFS *buff, const char *str, size_t lstr) {
lua_State *L = buff->L;
setsvalue2s(L, L->top.p, luaS_newlstr(L, str, lstr));
L->top.p++; /* may use one slot from EXTRA_STACK */
if (!buff->pushed) /* no previous string on the stack? */
buff->pushed = 1; /* now there is one */
else /* join previous string with new one */
luaV_concat(L, 2);
static void pushstr(BuffFS *buff, const char *str, size_t lstr) {
lua_State *L = buff->L;
setsvalue2s(L, L->top.p, luaS_newlstr(L, str, lstr));
L->top.p++; /* may use one slot from EXTRA_STACK */
if (!buff->pushed) /* no previous string on the stack? */
buff->pushed = 1; /* now there is one */
else /* join previous string with new one */
luaV_concat(L, 2);
}
/*
** empty the buffer space into the stack
*/
static void clearbuff (BuffFS *buff) {
pushstr(buff, buff->space, buff->blen); /* push buffer contents */
buff->blen = 0; /* space now is empty */
static void clearbuff(BuffFS *buff) {
pushstr(buff, buff->space, buff->blen); /* push buffer contents */
buff->blen = 0; /* space now is empty */
}
@ -435,11 +458,12 @@ static void clearbuff (BuffFS *buff) {
** Get a space of size 'sz' in the buffer. If buffer has not enough
** space, empty it. 'sz' must fit in an empty buffer.
*/
static char *getbuff (BuffFS *buff, int sz) {
lua_assert(buff->blen <= BUFVFS); lua_assert(sz <= BUFVFS);
if (sz > BUFVFS - buff->blen) /* not enough space? */
clearbuff(buff);
return buff->space + buff->blen;
static char *getbuff(BuffFS *buff, int sz) {
lua_assert(buff->blen <= BUFVFS);
lua_assert(sz <= BUFVFS);
if (sz > BUFVFS - buff->blen) /* not enough space? */
clearbuff(buff);
return buff->space + buff->blen;
}
@ -450,26 +474,25 @@ static char *getbuff (BuffFS *buff, int sz) {
** Add 'str' to the buffer. If string is larger than the buffer space,
** push the string directly to the stack.
*/
static void addstr2buff (BuffFS *buff, const char *str, size_t slen) {
if (slen <= BUFVFS) { /* does string fit into buffer? */
char *bf = getbuff(buff, cast_int(slen));
memcpy(bf, str, slen); /* add string to buffer */
addsize(buff, cast_int(slen));
}
else { /* string larger than buffer */
clearbuff(buff); /* string comes after buffer's content */
pushstr(buff, str, slen); /* push string */
}
static void addstr2buff(BuffFS *buff, const char *str, size_t slen) {
if (slen <= BUFVFS) { /* does string fit into buffer? */
char *bf = getbuff(buff, cast_int(slen));
memcpy(bf, str, slen); /* add string to buffer */
addsize(buff, cast_int(slen));
} else { /* string larger than buffer */
clearbuff(buff); /* string comes after buffer's content */
pushstr(buff, str, slen); /* push string */
}
}
/*
** Add a numeral to the buffer.
*/
static void addnum2buff (BuffFS *buff, TValue *num) {
char *numbuff = getbuff(buff, MAXNUMBER2STR);
int len = tostringbuff(num, numbuff); /* format number into 'numbuff' */
addsize(buff, len);
static void addnum2buff(BuffFS *buff, TValue *num) {
char *numbuff = getbuff(buff, MAXNUMBER2STR);
int len = tostringbuff(num, numbuff); /* format number into 'numbuff' */
addsize(buff, len);
}
@ -477,82 +500,82 @@ static void addnum2buff (BuffFS *buff, TValue *num) {
** this function handles only '%d', '%c', '%f', '%p', '%s', and '%%'
conventional formats, plus Lua-specific '%I' and '%U'
*/
const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) {
BuffFS buff; /* holds last part of the result */
const char *e; /* points to next '%' */
buff.pushed = buff.blen = 0;
buff.L = L;
while ((e = strchr(fmt, '%')) != NULL) {
addstr2buff(&buff, fmt, e - fmt); /* add 'fmt' up to '%' */
switch (*(e + 1)) { /* conversion specifier */
case 's': { /* zero-terminated string */
const char *s = va_arg(argp, char *);
if (s == NULL) s = "(null)";
addstr2buff(&buff, s, strlen(s));
break;
}
case 'c': { /* an 'int' as a character */
char c = cast_uchar(va_arg(argp, int));
addstr2buff(&buff, &c, sizeof(char));
break;
}
case 'd': { /* an 'int' */
TValue num;
setivalue(&num, va_arg(argp, int));
addnum2buff(&buff, &num);
break;
}
case 'I': { /* a 'lua_Integer' */
TValue num;
setivalue(&num, cast(lua_Integer, va_arg(argp, l_uacInt)));
addnum2buff(&buff, &num);
break;
}
case 'f': { /* a 'lua_Number' */
TValue num;
setfltvalue(&num, cast_num(va_arg(argp, l_uacNumber)));
addnum2buff(&buff, &num);
break;
}
case 'p': { /* a pointer */
const int sz = 3 * sizeof(void*) + 8; /* enough space for '%p' */
char *bf = getbuff(&buff, sz);
void *p = va_arg(argp, void *);
int len = lua_pointer2str(bf, sz, p);
addsize(&buff, len);
break;
}
case 'U': { /* a 'long' as a UTF-8 sequence */
char bf[UTF8BUFFSZ];
int len = luaO_utf8esc(bf, va_arg(argp, long));
addstr2buff(&buff, bf + UTF8BUFFSZ - len, len);
break;
}
case '%': {
addstr2buff(&buff, "%", 1);
break;
}
default: {
luaG_runerror(L, "invalid option '%%%c' to 'lua_pushfstring'",
*(e + 1));
}
const char *luaO_pushvfstring(lua_State *L, const char *fmt, va_list argp) {
BuffFS buff; /* holds last part of the result */
const char *e; /* points to next '%' */
buff.pushed = buff.blen = 0;
buff.L = L;
while ((e = strchr(fmt, '%')) != NULL) {
addstr2buff(&buff, fmt, e - fmt); /* add 'fmt' up to '%' */
switch (*(e + 1)) { /* conversion specifier */
case 's': { /* zero-terminated string */
const char *s = va_arg(argp, char *);
if (s == NULL) s = "(null)";
addstr2buff(&buff, s, strlen(s));
break;
}
case 'c': { /* an 'int' as a character */
char c = cast_uchar(va_arg(argp, int));
addstr2buff(&buff, &c, sizeof(char));
break;
}
case 'd': { /* an 'int' */
TValue num;
setivalue(&num, va_arg(argp, int));
addnum2buff(&buff, &num);
break;
}
case 'I': { /* a 'lua_Integer' */
TValue num;
setivalue(&num, cast(lua_Integer, va_arg(argp, l_uacInt)));
addnum2buff(&buff, &num);
break;
}
case 'f': { /* a 'lua_Number' */
TValue num;
setfltvalue(&num, cast_num(va_arg(argp, l_uacNumber)));
addnum2buff(&buff, &num);
break;
}
case 'p': { /* a pointer */
const int sz = 3 * sizeof(void *) + 8; /* enough space for '%p' */
char *bf = getbuff(&buff, sz);
void *p = va_arg(argp, void *);
int len = lua_pointer2str(bf, sz, p);
addsize(&buff, len);
break;
}
case 'U': { /* a 'long' as a UTF-8 sequence */
char bf[UTF8BUFFSZ];
int len = luaO_utf8esc(bf, va_arg(argp, long));
addstr2buff(&buff, bf + UTF8BUFFSZ - len, len);
break;
}
case '%': {
addstr2buff(&buff, "%", 1);
break;
}
default: {
luaG_runerror(L, "invalid option '%%%c' to 'lua_pushfstring'",
*(e + 1));
}
}
fmt = e + 2; /* skip '%' and the specifier */
}
fmt = e + 2; /* skip '%' and the specifier */
}
addstr2buff(&buff, fmt, strlen(fmt)); /* rest of 'fmt' */
clearbuff(&buff); /* empty buffer into the stack */
lua_assert(buff.pushed == 1);
return getstr(tsvalue(s2v(L->top.p - 1)));
addstr2buff(&buff, fmt, strlen(fmt)); /* rest of 'fmt' */
clearbuff(&buff); /* empty buffer into the stack */
lua_assert(buff.pushed == 1);
return getstr(tsvalue(s2v(L->top.p - 1)));
}
const char *luaO_pushfstring (lua_State *L, const char *fmt, ...) {
const char *msg;
va_list argp;
va_start(argp, fmt);
msg = luaO_pushvfstring(L, fmt, argp);
va_end(argp);
return msg;
const char *luaO_pushfstring(lua_State *L, const char *fmt, ...) {
const char *msg;
va_list argp;
va_start(argp, fmt);
msg = luaO_pushvfstring(L, fmt, argp);
va_end(argp);
return msg;
}
/* }================================================================== */
@ -564,39 +587,36 @@ const char *luaO_pushfstring (lua_State *L, const char *fmt, ...) {
#define addstr(a,b,l) ( memcpy(a,b,(l) * sizeof(char)), a += (l) )
void luaO_chunkid (char *out, const char *source, size_t srclen) {
size_t bufflen = LUA_IDSIZE; /* free space in buffer */
if (*source == '=') { /* 'literal' source */
if (srclen <= bufflen) /* small enough? */
memcpy(out, source + 1, srclen * sizeof(char));
else { /* truncate it */
addstr(out, source + 1, bufflen - 1);
*out = '\0';
void luaO_chunkid(char *out, const char *source, size_t srclen) {
size_t bufflen = LUA_IDSIZE; /* free space in buffer */
if (*source == '=') { /* 'literal' source */
if (srclen <= bufflen) /* small enough? */
memcpy(out, source + 1, srclen * sizeof(char));
else { /* truncate it */
addstr(out, source + 1, bufflen - 1);
*out = '\0';
}
} else if (*source == '@') { /* file name */
if (srclen <= bufflen) /* small enough? */
memcpy(out, source + 1, srclen * sizeof(char));
else { /* add '...' before rest of name */
addstr(out, RETS, LL(RETS));
bufflen -= LL(RETS);
memcpy(out, source + 1 + srclen - bufflen, bufflen * sizeof(char));
}
} else { /* string; format as [string "source"] */
const char *nl = strchr(source, '\n'); /* find first new line (if any) */
addstr(out, PRE, LL(PRE)); /* add prefix */
bufflen -= LL(PRE RETS POS) + 1; /* save space for prefix+suffix+'\0' */
if (srclen < bufflen && nl == NULL) { /* small one-line source? */
addstr(out, source, srclen); /* keep it */
} else {
if (nl != NULL) srclen = nl - source; /* stop at first newline */
if (srclen > bufflen) srclen = bufflen;
addstr(out, source, srclen);
addstr(out, RETS, LL(RETS));
}
memcpy(out, POS, (LL(POS) + 1) * sizeof(char));
}
}
else if (*source == '@') { /* file name */
if (srclen <= bufflen) /* small enough? */
memcpy(out, source + 1, srclen * sizeof(char));
else { /* add '...' before rest of name */
addstr(out, RETS, LL(RETS));
bufflen -= LL(RETS);
memcpy(out, source + 1 + srclen - bufflen, bufflen * sizeof(char));
}
}
else { /* string; format as [string "source"] */
const char *nl = strchr(source, '\n'); /* find first new line (if any) */
addstr(out, PRE, LL(PRE)); /* add prefix */
bufflen -= LL(PRE RETS POS) + 1; /* save space for prefix+suffix+'\0' */
if (srclen < bufflen && nl == NULL) { /* small one-line source? */
addstr(out, source, srclen); /* keep it */
}
else {
if (nl != NULL) srclen = nl - source; /* stop at first newline */
if (srclen > bufflen) srclen = bufflen;
addstr(out, source, srclen);
addstr(out, RETS, LL(RETS));
}
memcpy(out, POS, (LL(POS) + 1) * sizeof(char));
}
}

View file

@ -47,13 +47,13 @@
** Union of all Lua values
*/
typedef union Value {
struct GCObject *gc; /* collectable objects */
void *p; /* light userdata */
lua_CFunction f; /* light C functions */
lua_Integer i; /* integer numbers */
lua_Number n; /* float numbers */
/* not used, but may avoid warnings for uninitialized value */
lu_byte ub;
struct GCObject *gc; /* collectable objects */
void *p; /* light userdata */
lua_CFunction f; /* light C functions */
lua_Integer i; /* integer numbers */
lua_Number n; /* float numbers */
/* not used, but may avoid warnings for uninitialized value */
lu_byte ub;
} Value;
@ -65,7 +65,7 @@ typedef union Value {
#define TValuefields Value value_; lu_byte tt_
typedef struct TValue {
TValuefields;
TValuefields;
} TValue;
@ -146,11 +146,11 @@ typedef struct TValue {
** that field.
*/
typedef union StackValue {
TValue val;
struct {
TValuefields;
unsigned short delta;
} tbclist;
TValue val;
struct {
TValuefields;
unsigned short delta;
} tbclist;
} StackValue;
@ -163,8 +163,8 @@ typedef StackValue *StkId;
** proper offsets.
*/
typedef union {
StkId p; /* actual pointer */
ptrdiff_t offset; /* used while the stack is being reallocated */
StkId p; /* actual pointer */
ptrdiff_t offset; /* used while the stack is being reallocated */
} StkIdRel;
@ -290,7 +290,7 @@ typedef union {
/* Common type for all collectable objects */
typedef struct GCObject {
CommonHeader;
CommonHeader;
} GCObject;
@ -384,15 +384,15 @@ typedef struct GCObject {
** Header for a string value.
*/
typedef struct TString {
CommonHeader;
lu_byte extra; /* reserved words for short strings; "has hash" for longs */
lu_byte shrlen; /* length for short strings, 0xFF for long strings */
unsigned int hash;
union {
size_t lnglen; /* length for long strings */
struct TString *hnext; /* linked list for hash table */
} u;
char contents[1];
CommonHeader;
lu_byte extra; /* reserved words for short strings; "has hash" for longs */
lu_byte shrlen; /* length for short strings, 0xFF for long strings */
unsigned int hash;
union {
size_t lnglen; /* length for long strings */
struct TString *hnext; /* linked list for hash table */
} u;
char contents[1];
} TString;
@ -447,8 +447,8 @@ typedef struct TString {
/* Ensures that addresses after this type are always fully aligned. */
typedef union UValue {
TValue uv;
LUAI_MAXALIGN; /* ensures maximum alignment for udata bytes */
TValue uv;
LUAI_MAXALIGN; /* ensures maximum alignment for udata bytes */
} UValue;
@ -457,12 +457,12 @@ typedef union UValue {
** memory area follows the end of this structure.
*/
typedef struct Udata {
CommonHeader;
unsigned short nuvalue; /* number of user values */
size_t len; /* number of bytes */
struct Table *metatable;
GCObject *gclist;
UValue uv[1]; /* user values */
CommonHeader;
unsigned short nuvalue; /* number of user values */
size_t len; /* number of bytes */
struct Table *metatable;
GCObject *gclist;
UValue uv[1]; /* user values */
} Udata;
@ -476,11 +476,11 @@ typedef struct Udata {
** alignment for binary data following this header.)
*/
typedef struct Udata0 {
CommonHeader;
unsigned short nuvalue; /* number of user values */
size_t len; /* number of bytes */
struct Table *metatable;
union {LUAI_MAXALIGN;} bindata;
CommonHeader;
unsigned short nuvalue; /* number of user values */
size_t len; /* number of bytes */
struct Table *metatable;
union {LUAI_MAXALIGN;} bindata;
} Udata0;
@ -511,10 +511,10 @@ typedef struct Udata0 {
** Description of an upvalue for function prototypes
*/
typedef struct Upvaldesc {
TString *name; /* upvalue name (for debug information) */
lu_byte instack; /* whether it is in stack (register) */
lu_byte idx; /* index of upvalue (in stack or in outer function's list) */
lu_byte kind; /* kind of corresponding variable */
TString *name; /* upvalue name (for debug information) */
lu_byte instack; /* whether it is in stack (register) */
lu_byte idx; /* index of upvalue (in stack or in outer function's list) */
lu_byte kind; /* kind of corresponding variable */
} Upvaldesc;
@ -523,9 +523,9 @@ typedef struct Upvaldesc {
** (used for debug information)
*/
typedef struct LocVar {
TString *varname;
int startpc; /* first point where variable is active */
int endpc; /* first point where variable is dead */
TString *varname;
int startpc; /* first point where variable is active */
int endpc; /* first point where variable is dead */
} LocVar;
@ -540,36 +540,36 @@ typedef struct LocVar {
** linearly to compute a line.)
*/
typedef struct AbsLineInfo {
int pc;
int line;
int pc;
int line;
} AbsLineInfo;
/*
** Function Prototypes
*/
typedef struct Proto {
CommonHeader;
lu_byte numparams; /* number of fixed (named) parameters */
lu_byte is_vararg;
lu_byte maxstacksize; /* number of registers needed by this function */
int sizeupvalues; /* size of 'upvalues' */
int sizek; /* size of 'k' */
int sizecode;
int sizelineinfo;
int sizep; /* size of 'p' */
int sizelocvars;
int sizeabslineinfo; /* size of 'abslineinfo' */
int linedefined; /* debug information */
int lastlinedefined; /* debug information */
TValue *k; /* constants used by the function */
Instruction *code; /* opcodes */
struct Proto **p; /* functions defined inside the function */
Upvaldesc *upvalues; /* upvalue information */
ls_byte *lineinfo; /* information about source lines (debug information) */
AbsLineInfo *abslineinfo; /* idem */
LocVar *locvars; /* information about local variables (debug information) */
TString *source; /* used for debug information */
GCObject *gclist;
CommonHeader;
lu_byte numparams; /* number of fixed (named) parameters */
lu_byte is_vararg;
lu_byte maxstacksize; /* number of registers needed by this function */
int sizeupvalues; /* size of 'upvalues' */
int sizek; /* size of 'k' */
int sizecode;
int sizelineinfo;
int sizep; /* size of 'p' */
int sizelocvars;
int sizeabslineinfo; /* size of 'abslineinfo' */
int linedefined; /* debug information */
int lastlinedefined; /* debug information */
TValue *k; /* constants used by the function */
Instruction *code; /* opcodes */
struct Proto **p; /* functions defined inside the function */
Upvaldesc *upvalues; /* upvalue information */
ls_byte *lineinfo; /* information about source lines (debug information) */
AbsLineInfo *abslineinfo; /* idem */
LocVar *locvars; /* information about local variables (debug information) */
TString *source; /* used for debug information */
GCObject *gclist;
} Proto;
/* }================================================================== */
@ -625,18 +625,18 @@ typedef struct Proto {
** Upvalues for Lua closures
*/
typedef struct UpVal {
CommonHeader;
union {
TValue *p; /* points to stack or to its own value */
ptrdiff_t offset; /* used while the stack is being reallocated */
} v;
union {
struct { /* (when open) */
struct UpVal *next; /* linked list */
struct UpVal **previous;
} open;
TValue value; /* the value (when closed) */
} u;
CommonHeader;
union {
TValue *p; /* points to stack or to its own value */
ptrdiff_t offset; /* used while the stack is being reallocated */
} v;
union {
struct { /* (when open) */
struct UpVal *next; /* linked list */
struct UpVal **previous;
} open;
TValue value; /* the value (when closed) */
} u;
} UpVal;
@ -645,22 +645,22 @@ typedef struct UpVal {
CommonHeader; lu_byte nupvalues; GCObject *gclist
typedef struct CClosure {
ClosureHeader;
lua_CFunction f;
TValue upvalue[1]; /* list of upvalues */
ClosureHeader;
lua_CFunction f;
TValue upvalue[1]; /* list of upvalues */
} CClosure;
typedef struct LClosure {
ClosureHeader;
struct Proto *p;
UpVal *upvals[1]; /* list of upvalues */
ClosureHeader;
struct Proto *p;
UpVal *upvals[1]; /* list of upvalues */
} LClosure;
typedef union Closure {
CClosure c;
LClosure l;
CClosure c;
LClosure l;
} Closure;
@ -697,13 +697,13 @@ typedef union Closure {
** and 8-byte alignments.
*/
typedef union Node {
struct NodeKey {
TValuefields; /* fields for value */
lu_byte key_tt; /* key type */
int next; /* for chaining */
Value key_val; /* key value */
} u;
TValue i_val; /* direct access to node's value as a proper 'TValue' */
struct NodeKey {
TValuefields; /* fields for value */
lu_byte key_tt; /* key type */
int next; /* for chaining */
Value key_val; /* key value */
} u;
TValue i_val; /* direct access to node's value as a proper 'TValue' */
} Node;
@ -735,15 +735,15 @@ typedef union Node {
typedef struct Table {
CommonHeader;
lu_byte flags; /* 1<<p means tagmethod(p) is not present */
lu_byte lsizenode; /* log2 of size of 'node' array */
unsigned int alimit; /* "limit" of 'array' array */
TValue *array; /* array part */
Node *node;
Node *lastfree; /* any free position is before this position */
struct Table *metatable;
GCObject *gclist;
CommonHeader;
lu_byte flags; /* 1<<p means tagmethod(p) is not present */
lu_byte lsizenode; /* log2 of size of 'node' array */
unsigned int alimit; /* "limit" of 'array' array */
TValue *array; /* array part */
Node *node;
Node *lastfree; /* any free position is before this position */
struct Table *metatable;
GCObject *gclist;
} Table;
@ -794,19 +794,19 @@ typedef struct Table {
/* size of buffer for 'luaO_utf8esc' function */
#define UTF8BUFFSZ 8
LUAI_FUNC int luaO_utf8esc (char *buff, unsigned long x);
LUAI_FUNC int luaO_ceillog2 (unsigned int x);
LUAI_FUNC int luaO_rawarith (lua_State *L, int op, const TValue *p1,
const TValue *p2, TValue *res);
LUAI_FUNC void luaO_arith (lua_State *L, int op, const TValue *p1,
const TValue *p2, StkId res);
LUAI_FUNC size_t luaO_str2num (const char *s, TValue *o);
LUAI_FUNC int luaO_hexavalue (int c);
LUAI_FUNC void luaO_tostring (lua_State *L, TValue *obj);
LUAI_FUNC const char *luaO_pushvfstring (lua_State *L, const char *fmt,
va_list argp);
LUAI_FUNC const char *luaO_pushfstring (lua_State *L, const char *fmt, ...);
LUAI_FUNC void luaO_chunkid (char *out, const char *source, size_t srclen);
LUAI_FUNC int luaO_utf8esc(char *buff, unsigned long x);
LUAI_FUNC int luaO_ceillog2(unsigned int x);
LUAI_FUNC int luaO_rawarith(lua_State *L, int op, const TValue *p1,
const TValue *p2, TValue *res);
LUAI_FUNC void luaO_arith(lua_State *L, int op, const TValue *p1,
const TValue *p2, StkId res);
LUAI_FUNC size_t luaO_str2num(const char *s, TValue *o);
LUAI_FUNC int luaO_hexavalue(int c);
LUAI_FUNC void luaO_tostring(lua_State *L, TValue *obj);
LUAI_FUNC const char *luaO_pushvfstring(lua_State *L, const char *fmt,
va_list argp);
LUAI_FUNC const char *luaO_pushfstring(lua_State *L, const char *fmt, ...);
LUAI_FUNC void luaO_chunkid(char *out, const char *source, size_t srclen);
#endif

View file

@ -16,89 +16,89 @@
/* ORDER OP */
LUAI_DDEF const lu_byte luaP_opmodes[NUM_OPCODES] = {
/* MM OT IT T A mode opcode */
opmode(0, 0, 0, 0, 1, iABC) /* OP_MOVE */
,opmode(0, 0, 0, 0, 1, iAsBx) /* OP_LOADI */
,opmode(0, 0, 0, 0, 1, iAsBx) /* OP_LOADF */
,opmode(0, 0, 0, 0, 1, iABx) /* OP_LOADK */
,opmode(0, 0, 0, 0, 1, iABx) /* OP_LOADKX */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_LOADFALSE */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_LFALSESKIP */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_LOADTRUE */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_LOADNIL */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_GETUPVAL */
,opmode(0, 0, 0, 0, 0, iABC) /* OP_SETUPVAL */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_GETTABUP */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_GETTABLE */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_GETI */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_GETFIELD */
,opmode(0, 0, 0, 0, 0, iABC) /* OP_SETTABUP */
,opmode(0, 0, 0, 0, 0, iABC) /* OP_SETTABLE */
,opmode(0, 0, 0, 0, 0, iABC) /* OP_SETI */
,opmode(0, 0, 0, 0, 0, iABC) /* OP_SETFIELD */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_NEWTABLE */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_SELF */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_ADDI */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_ADDK */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_SUBK */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_MULK */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_MODK */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_POWK */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_DIVK */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_IDIVK */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_BANDK */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_BORK */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_BXORK */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_SHRI */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_SHLI */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_ADD */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_SUB */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_MUL */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_MOD */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_POW */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_DIV */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_IDIV */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_BAND */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_BOR */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_BXOR */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_SHL */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_SHR */
,opmode(1, 0, 0, 0, 0, iABC) /* OP_MMBIN */
,opmode(1, 0, 0, 0, 0, iABC) /* OP_MMBINI*/
,opmode(1, 0, 0, 0, 0, iABC) /* OP_MMBINK*/
,opmode(0, 0, 0, 0, 1, iABC) /* OP_UNM */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_BNOT */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_NOT */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_LEN */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_CONCAT */
,opmode(0, 0, 0, 0, 0, iABC) /* OP_CLOSE */
,opmode(0, 0, 0, 0, 0, iABC) /* OP_TBC */
,opmode(0, 0, 0, 0, 0, isJ) /* OP_JMP */
,opmode(0, 0, 0, 1, 0, iABC) /* OP_EQ */
,opmode(0, 0, 0, 1, 0, iABC) /* OP_LT */
,opmode(0, 0, 0, 1, 0, iABC) /* OP_LE */
,opmode(0, 0, 0, 1, 0, iABC) /* OP_EQK */
,opmode(0, 0, 0, 1, 0, iABC) /* OP_EQI */
,opmode(0, 0, 0, 1, 0, iABC) /* OP_LTI */
,opmode(0, 0, 0, 1, 0, iABC) /* OP_LEI */
,opmode(0, 0, 0, 1, 0, iABC) /* OP_GTI */
,opmode(0, 0, 0, 1, 0, iABC) /* OP_GEI */
,opmode(0, 0, 0, 1, 0, iABC) /* OP_TEST */
,opmode(0, 0, 0, 1, 1, iABC) /* OP_TESTSET */
,opmode(0, 1, 1, 0, 1, iABC) /* OP_CALL */
,opmode(0, 1, 1, 0, 1, iABC) /* OP_TAILCALL */
,opmode(0, 0, 1, 0, 0, iABC) /* OP_RETURN */
,opmode(0, 0, 0, 0, 0, iABC) /* OP_RETURN0 */
,opmode(0, 0, 0, 0, 0, iABC) /* OP_RETURN1 */
,opmode(0, 0, 0, 0, 1, iABx) /* OP_FORLOOP */
,opmode(0, 0, 0, 0, 1, iABx) /* OP_FORPREP */
,opmode(0, 0, 0, 0, 0, iABx) /* OP_TFORPREP */
,opmode(0, 0, 0, 0, 0, iABC) /* OP_TFORCALL */
,opmode(0, 0, 0, 0, 1, iABx) /* OP_TFORLOOP */
,opmode(0, 0, 1, 0, 0, iABC) /* OP_SETLIST */
,opmode(0, 0, 0, 0, 1, iABx) /* OP_CLOSURE */
,opmode(0, 1, 0, 0, 1, iABC) /* OP_VARARG */
,opmode(0, 0, 1, 0, 1, iABC) /* OP_VARARGPREP */
,opmode(0, 0, 0, 0, 0, iAx) /* OP_EXTRAARG */
/* MM OT IT T A mode opcode */
opmode(0, 0, 0, 0, 1, iABC) /* OP_MOVE */
, opmode(0, 0, 0, 0, 1, iAsBx) /* OP_LOADI */
, opmode(0, 0, 0, 0, 1, iAsBx) /* OP_LOADF */
, opmode(0, 0, 0, 0, 1, iABx) /* OP_LOADK */
, opmode(0, 0, 0, 0, 1, iABx) /* OP_LOADKX */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_LOADFALSE */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_LFALSESKIP */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_LOADTRUE */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_LOADNIL */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_GETUPVAL */
, opmode(0, 0, 0, 0, 0, iABC) /* OP_SETUPVAL */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_GETTABUP */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_GETTABLE */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_GETI */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_GETFIELD */
, opmode(0, 0, 0, 0, 0, iABC) /* OP_SETTABUP */
, opmode(0, 0, 0, 0, 0, iABC) /* OP_SETTABLE */
, opmode(0, 0, 0, 0, 0, iABC) /* OP_SETI */
, opmode(0, 0, 0, 0, 0, iABC) /* OP_SETFIELD */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_NEWTABLE */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_SELF */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_ADDI */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_ADDK */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_SUBK */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_MULK */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_MODK */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_POWK */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_DIVK */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_IDIVK */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_BANDK */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_BORK */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_BXORK */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_SHRI */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_SHLI */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_ADD */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_SUB */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_MUL */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_MOD */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_POW */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_DIV */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_IDIV */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_BAND */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_BOR */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_BXOR */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_SHL */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_SHR */
, opmode(1, 0, 0, 0, 0, iABC) /* OP_MMBIN */
, opmode(1, 0, 0, 0, 0, iABC) /* OP_MMBINI*/
, opmode(1, 0, 0, 0, 0, iABC) /* OP_MMBINK*/
, opmode(0, 0, 0, 0, 1, iABC) /* OP_UNM */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_BNOT */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_NOT */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_LEN */
, opmode(0, 0, 0, 0, 1, iABC) /* OP_CONCAT */
, opmode(0, 0, 0, 0, 0, iABC) /* OP_CLOSE */
, opmode(0, 0, 0, 0, 0, iABC) /* OP_TBC */
, opmode(0, 0, 0, 0, 0, isJ) /* OP_JMP */
, opmode(0, 0, 0, 1, 0, iABC) /* OP_EQ */
, opmode(0, 0, 0, 1, 0, iABC) /* OP_LT */
, opmode(0, 0, 0, 1, 0, iABC) /* OP_LE */
, opmode(0, 0, 0, 1, 0, iABC) /* OP_EQK */
, opmode(0, 0, 0, 1, 0, iABC) /* OP_EQI */
, opmode(0, 0, 0, 1, 0, iABC) /* OP_LTI */
, opmode(0, 0, 0, 1, 0, iABC) /* OP_LEI */
, opmode(0, 0, 0, 1, 0, iABC) /* OP_GTI */
, opmode(0, 0, 0, 1, 0, iABC) /* OP_GEI */
, opmode(0, 0, 0, 1, 0, iABC) /* OP_TEST */
, opmode(0, 0, 0, 1, 1, iABC) /* OP_TESTSET */
, opmode(0, 1, 1, 0, 1, iABC) /* OP_CALL */
, opmode(0, 1, 1, 0, 1, iABC) /* OP_TAILCALL */
, opmode(0, 0, 1, 0, 0, iABC) /* OP_RETURN */
, opmode(0, 0, 0, 0, 0, iABC) /* OP_RETURN0 */
, opmode(0, 0, 0, 0, 0, iABC) /* OP_RETURN1 */
, opmode(0, 0, 0, 0, 1, iABx) /* OP_FORLOOP */
, opmode(0, 0, 0, 0, 1, iABx) /* OP_FORPREP */
, opmode(0, 0, 0, 0, 0, iABx) /* OP_TFORPREP */
, opmode(0, 0, 0, 0, 0, iABC) /* OP_TFORCALL */
, opmode(0, 0, 0, 0, 1, iABx) /* OP_TFORLOOP */
, opmode(0, 0, 1, 0, 0, iABC) /* OP_SETLIST */
, opmode(0, 0, 0, 0, 1, iABx) /* OP_CLOSURE */
, opmode(0, 1, 0, 0, 1, iABC) /* OP_VARARG */
, opmode(0, 0, 1, 0, 1, iABC) /* OP_VARARGPREP */
, opmode(0, 0, 0, 0, 0, iAx) /* OP_EXTRAARG */
};

View file

@ -195,118 +195,118 @@ enum OpMode {iABC, iABx, iAsBx, iAx, isJ}; /* basic instruction formats */
*/
typedef enum {
/*----------------------------------------------------------------------
name args description
------------------------------------------------------------------------*/
OP_MOVE,/* A B R[A] := R[B] */
OP_LOADI,/* A sBx R[A] := sBx */
OP_LOADF,/* A sBx R[A] := (lua_Number)sBx */
OP_LOADK,/* A Bx R[A] := K[Bx] */
OP_LOADKX,/* A R[A] := K[extra arg] */
OP_LOADFALSE,/* A R[A] := false */
OP_LFALSESKIP,/*A R[A] := false; pc++ (*) */
OP_LOADTRUE,/* A R[A] := true */
OP_LOADNIL,/* A B R[A], R[A+1], ..., R[A+B] := nil */
OP_GETUPVAL,/* A B R[A] := UpValue[B] */
OP_SETUPVAL,/* A B UpValue[B] := R[A] */
/*----------------------------------------------------------------------
name args description
------------------------------------------------------------------------*/
OP_MOVE,/* A B R[A] := R[B] */
OP_LOADI,/* A sBx R[A] := sBx */
OP_LOADF,/* A sBx R[A] := (lua_Number)sBx */
OP_LOADK,/* A Bx R[A] := K[Bx] */
OP_LOADKX,/* A R[A] := K[extra arg] */
OP_LOADFALSE,/* A R[A] := false */
OP_LFALSESKIP,/*A R[A] := false; pc++ (*) */
OP_LOADTRUE,/* A R[A] := true */
OP_LOADNIL,/* A B R[A], R[A+1], ..., R[A+B] := nil */
OP_GETUPVAL,/* A B R[A] := UpValue[B] */
OP_SETUPVAL,/* A B UpValue[B] := R[A] */
OP_GETTABUP,/* A B C R[A] := UpValue[B][K[C]:shortstring] */
OP_GETTABLE,/* A B C R[A] := R[B][R[C]] */
OP_GETI,/* A B C R[A] := R[B][C] */
OP_GETFIELD,/* A B C R[A] := R[B][K[C]:shortstring] */
OP_GETTABUP,/* A B C R[A] := UpValue[B][K[C]:shortstring] */
OP_GETTABLE,/* A B C R[A] := R[B][R[C]] */
OP_GETI,/* A B C R[A] := R[B][C] */
OP_GETFIELD,/* A B C R[A] := R[B][K[C]:shortstring] */
OP_SETTABUP,/* A B C UpValue[A][K[B]:shortstring] := RK(C) */
OP_SETTABLE,/* A B C R[A][R[B]] := RK(C) */
OP_SETI,/* A B C R[A][B] := RK(C) */
OP_SETFIELD,/* A B C R[A][K[B]:shortstring] := RK(C) */
OP_SETTABUP,/* A B C UpValue[A][K[B]:shortstring] := RK(C) */
OP_SETTABLE,/* A B C R[A][R[B]] := RK(C) */
OP_SETI,/* A B C R[A][B] := RK(C) */
OP_SETFIELD,/* A B C R[A][K[B]:shortstring] := RK(C) */
OP_NEWTABLE,/* A B C k R[A] := {} */
OP_NEWTABLE,/* A B C k R[A] := {} */
OP_SELF,/* A B C R[A+1] := R[B]; R[A] := R[B][RK(C):string] */
OP_SELF,/* A B C R[A+1] := R[B]; R[A] := R[B][RK(C):string] */
OP_ADDI,/* A B sC R[A] := R[B] + sC */
OP_ADDI,/* A B sC R[A] := R[B] + sC */
OP_ADDK,/* A B C R[A] := R[B] + K[C]:number */
OP_SUBK,/* A B C R[A] := R[B] - K[C]:number */
OP_MULK,/* A B C R[A] := R[B] * K[C]:number */
OP_MODK,/* A B C R[A] := R[B] % K[C]:number */
OP_POWK,/* A B C R[A] := R[B] ^ K[C]:number */
OP_DIVK,/* A B C R[A] := R[B] / K[C]:number */
OP_IDIVK,/* A B C R[A] := R[B] // K[C]:number */
OP_ADDK,/* A B C R[A] := R[B] + K[C]:number */
OP_SUBK,/* A B C R[A] := R[B] - K[C]:number */
OP_MULK,/* A B C R[A] := R[B] * K[C]:number */
OP_MODK,/* A B C R[A] := R[B] % K[C]:number */
OP_POWK,/* A B C R[A] := R[B] ^ K[C]:number */
OP_DIVK,/* A B C R[A] := R[B] / K[C]:number */
OP_IDIVK,/* A B C R[A] := R[B] // K[C]:number */
OP_BANDK,/* A B C R[A] := R[B] & K[C]:integer */
OP_BORK,/* A B C R[A] := R[B] | K[C]:integer */
OP_BXORK,/* A B C R[A] := R[B] ~ K[C]:integer */
OP_BANDK,/* A B C R[A] := R[B] & K[C]:integer */
OP_BORK,/* A B C R[A] := R[B] | K[C]:integer */
OP_BXORK,/* A B C R[A] := R[B] ~ K[C]:integer */
OP_SHRI,/* A B sC R[A] := R[B] >> sC */
OP_SHLI,/* A B sC R[A] := sC << R[B] */
OP_SHRI,/* A B sC R[A] := R[B] >> sC */
OP_SHLI,/* A B sC R[A] := sC << R[B] */
OP_ADD,/* A B C R[A] := R[B] + R[C] */
OP_SUB,/* A B C R[A] := R[B] - R[C] */
OP_MUL,/* A B C R[A] := R[B] * R[C] */
OP_MOD,/* A B C R[A] := R[B] % R[C] */
OP_POW,/* A B C R[A] := R[B] ^ R[C] */
OP_DIV,/* A B C R[A] := R[B] / R[C] */
OP_IDIV,/* A B C R[A] := R[B] // R[C] */
OP_ADD,/* A B C R[A] := R[B] + R[C] */
OP_SUB,/* A B C R[A] := R[B] - R[C] */
OP_MUL,/* A B C R[A] := R[B] * R[C] */
OP_MOD,/* A B C R[A] := R[B] % R[C] */
OP_POW,/* A B C R[A] := R[B] ^ R[C] */
OP_DIV,/* A B C R[A] := R[B] / R[C] */
OP_IDIV,/* A B C R[A] := R[B] // R[C] */
OP_BAND,/* A B C R[A] := R[B] & R[C] */
OP_BOR,/* A B C R[A] := R[B] | R[C] */
OP_BXOR,/* A B C R[A] := R[B] ~ R[C] */
OP_SHL,/* A B C R[A] := R[B] << R[C] */
OP_SHR,/* A B C R[A] := R[B] >> R[C] */
OP_BAND,/* A B C R[A] := R[B] & R[C] */
OP_BOR,/* A B C R[A] := R[B] | R[C] */
OP_BXOR,/* A B C R[A] := R[B] ~ R[C] */
OP_SHL,/* A B C R[A] := R[B] << R[C] */
OP_SHR,/* A B C R[A] := R[B] >> R[C] */
OP_MMBIN,/* A B C call C metamethod over R[A] and R[B] (*) */
OP_MMBINI,/* A sB C k call C metamethod over R[A] and sB */
OP_MMBINK,/* A B C k call C metamethod over R[A] and K[B] */
OP_MMBIN,/* A B C call C metamethod over R[A] and R[B] (*) */
OP_MMBINI,/* A sB C k call C metamethod over R[A] and sB */
OP_MMBINK,/* A B C k call C metamethod over R[A] and K[B] */
OP_UNM,/* A B R[A] := -R[B] */
OP_BNOT,/* A B R[A] := ~R[B] */
OP_NOT,/* A B R[A] := not R[B] */
OP_LEN,/* A B R[A] := #R[B] (length operator) */
OP_UNM,/* A B R[A] := -R[B] */
OP_BNOT,/* A B R[A] := ~R[B] */
OP_NOT,/* A B R[A] := not R[B] */
OP_LEN,/* A B R[A] := #R[B] (length operator) */
OP_CONCAT,/* A B R[A] := R[A].. ... ..R[A + B - 1] */
OP_CONCAT,/* A B R[A] := R[A].. ... ..R[A + B - 1] */
OP_CLOSE,/* A close all upvalues >= R[A] */
OP_TBC,/* A mark variable A "to be closed" */
OP_JMP,/* sJ pc += sJ */
OP_EQ,/* A B k if ((R[A] == R[B]) ~= k) then pc++ */
OP_LT,/* A B k if ((R[A] < R[B]) ~= k) then pc++ */
OP_LE,/* A B k if ((R[A] <= R[B]) ~= k) then pc++ */
OP_CLOSE,/* A close all upvalues >= R[A] */
OP_TBC,/* A mark variable A "to be closed" */
OP_JMP,/* sJ pc += sJ */
OP_EQ,/* A B k if ((R[A] == R[B]) ~= k) then pc++ */
OP_LT,/* A B k if ((R[A] < R[B]) ~= k) then pc++ */
OP_LE,/* A B k if ((R[A] <= R[B]) ~= k) then pc++ */
OP_EQK,/* A B k if ((R[A] == K[B]) ~= k) then pc++ */
OP_EQI,/* A sB k if ((R[A] == sB) ~= k) then pc++ */
OP_LTI,/* A sB k if ((R[A] < sB) ~= k) then pc++ */
OP_LEI,/* A sB k if ((R[A] <= sB) ~= k) then pc++ */
OP_GTI,/* A sB k if ((R[A] > sB) ~= k) then pc++ */
OP_GEI,/* A sB k if ((R[A] >= sB) ~= k) then pc++ */
OP_EQK,/* A B k if ((R[A] == K[B]) ~= k) then pc++ */
OP_EQI,/* A sB k if ((R[A] == sB) ~= k) then pc++ */
OP_LTI,/* A sB k if ((R[A] < sB) ~= k) then pc++ */
OP_LEI,/* A sB k if ((R[A] <= sB) ~= k) then pc++ */
OP_GTI,/* A sB k if ((R[A] > sB) ~= k) then pc++ */
OP_GEI,/* A sB k if ((R[A] >= sB) ~= k) then pc++ */
OP_TEST,/* A k if (not R[A] == k) then pc++ */
OP_TESTSET,/* A B k if (not R[B] == k) then pc++ else R[A] := R[B] (*) */
OP_TEST,/* A k if (not R[A] == k) then pc++ */
OP_TESTSET,/* A B k if (not R[B] == k) then pc++ else R[A] := R[B] (*) */
OP_CALL,/* A B C R[A], ... ,R[A+C-2] := R[A](R[A+1], ... ,R[A+B-1]) */
OP_TAILCALL,/* A B C k return R[A](R[A+1], ... ,R[A+B-1]) */
OP_CALL,/* A B C R[A], ... ,R[A+C-2] := R[A](R[A+1], ... ,R[A+B-1]) */
OP_TAILCALL,/* A B C k return R[A](R[A+1], ... ,R[A+B-1]) */
OP_RETURN,/* A B C k return R[A], ... ,R[A+B-2] (see note) */
OP_RETURN0,/* return */
OP_RETURN1,/* A return R[A] */
OP_RETURN,/* A B C k return R[A], ... ,R[A+B-2] (see note) */
OP_RETURN0,/* return */
OP_RETURN1,/* A return R[A] */
OP_FORLOOP,/* A Bx update counters; if loop continues then pc-=Bx; */
OP_FORPREP,/* A Bx <check values and prepare counters>;
OP_FORLOOP,/* A Bx update counters; if loop continues then pc-=Bx; */
OP_FORPREP,/* A Bx <check values and prepare counters>;
if not to run then pc+=Bx+1; */
OP_TFORPREP,/* A Bx create upvalue for R[A + 3]; pc+=Bx */
OP_TFORCALL,/* A C R[A+4], ... ,R[A+3+C] := R[A](R[A+1], R[A+2]); */
OP_TFORLOOP,/* A Bx if R[A+2] ~= nil then { R[A]=R[A+2]; pc -= Bx } */
OP_TFORPREP,/* A Bx create upvalue for R[A + 3]; pc+=Bx */
OP_TFORCALL,/* A C R[A+4], ... ,R[A+3+C] := R[A](R[A+1], R[A+2]); */
OP_TFORLOOP,/* A Bx if R[A+2] ~= nil then { R[A]=R[A+2]; pc -= Bx } */
OP_SETLIST,/* A B C k R[A][C+i] := R[A+i], 1 <= i <= B */
OP_SETLIST,/* A B C k R[A][C+i] := R[A+i], 1 <= i <= B */
OP_CLOSURE,/* A Bx R[A] := closure(KPROTO[Bx]) */
OP_CLOSURE,/* A Bx R[A] := closure(KPROTO[Bx]) */
OP_VARARG,/* A C R[A], R[A+1], ..., R[A+C-2] = vararg */
OP_VARARG,/* A C R[A], R[A+1], ..., R[A+C-2] = vararg */
OP_VARARGPREP,/*A (adjust vararg parameters) */
OP_VARARGPREP,/*A (adjust vararg parameters) */
OP_EXTRAARG/* Ax extra (larger) argument for previous opcode */
OP_EXTRAARG/* Ax extra (larger) argument for previous opcode */
} OpCode;

View file

@ -13,90 +13,90 @@
/* ORDER OP */
static const char *const opnames[] = {
"MOVE",
"LOADI",
"LOADF",
"LOADK",
"LOADKX",
"LOADFALSE",
"LFALSESKIP",
"LOADTRUE",
"LOADNIL",
"GETUPVAL",
"SETUPVAL",
"GETTABUP",
"GETTABLE",
"GETI",
"GETFIELD",
"SETTABUP",
"SETTABLE",
"SETI",
"SETFIELD",
"NEWTABLE",
"SELF",
"ADDI",
"ADDK",
"SUBK",
"MULK",
"MODK",
"POWK",
"DIVK",
"IDIVK",
"BANDK",
"BORK",
"BXORK",
"SHRI",
"SHLI",
"ADD",
"SUB",
"MUL",
"MOD",
"POW",
"DIV",
"IDIV",
"BAND",
"BOR",
"BXOR",
"SHL",
"SHR",
"MMBIN",
"MMBINI",
"MMBINK",
"UNM",
"BNOT",
"NOT",
"LEN",
"CONCAT",
"CLOSE",
"TBC",
"JMP",
"EQ",
"LT",
"LE",
"EQK",
"EQI",
"LTI",
"LEI",
"GTI",
"GEI",
"TEST",
"TESTSET",
"CALL",
"TAILCALL",
"RETURN",
"RETURN0",
"RETURN1",
"FORLOOP",
"FORPREP",
"TFORPREP",
"TFORCALL",
"TFORLOOP",
"SETLIST",
"CLOSURE",
"VARARG",
"VARARGPREP",
"EXTRAARG",
NULL
"MOVE",
"LOADI",
"LOADF",
"LOADK",
"LOADKX",
"LOADFALSE",
"LFALSESKIP",
"LOADTRUE",
"LOADNIL",
"GETUPVAL",
"SETUPVAL",
"GETTABUP",
"GETTABLE",
"GETI",
"GETFIELD",
"SETTABUP",
"SETTABLE",
"SETI",
"SETFIELD",
"NEWTABLE",
"SELF",
"ADDI",
"ADDK",
"SUBK",
"MULK",
"MODK",
"POWK",
"DIVK",
"IDIVK",
"BANDK",
"BORK",
"BXORK",
"SHRI",
"SHLI",
"ADD",
"SUB",
"MUL",
"MOD",
"POW",
"DIV",
"IDIV",
"BAND",
"BOR",
"BXOR",
"SHL",
"SHR",
"MMBIN",
"MMBINI",
"MMBINK",
"UNM",
"BNOT",
"NOT",
"LEN",
"CONCAT",
"CLOSE",
"TBC",
"JMP",
"EQ",
"LT",
"LE",
"EQK",
"EQI",
"LTI",
"LEI",
"GTI",
"GEI",
"TEST",
"TESTSET",
"CALL",
"TAILCALL",
"RETURN",
"RETURN0",
"RETURN1",
"FORLOOP",
"FORPREP",
"TFORPREP",
"TFORCALL",
"TFORLOOP",
"SETLIST",
"CLOSURE",
"VARARG",
"VARARGPREP",
"EXTRAARG",
NULL
};
#endif

View file

@ -139,55 +139,55 @@
#endif
static int os_execute (lua_State *L) {
const char *cmd = luaL_optstring(L, 1, NULL);
int stat;
errno = 0;
stat = l_system(cmd);
if (cmd != NULL)
return luaL_execresult(L, stat);
else {
lua_pushboolean(L, stat); /* true if there is a shell */
static int os_execute(lua_State *L) {
const char *cmd = luaL_optstring(L, 1, NULL);
int stat;
errno = 0;
stat = l_system(cmd);
if (cmd != NULL)
return luaL_execresult(L, stat);
else {
lua_pushboolean(L, stat); /* true if there is a shell */
return 1;
}
}
static int os_remove(lua_State *L) {
const char *filename = luaL_checkstring(L, 1);
errno = 0;
return luaL_fileresult(L, remove(filename) == 0, filename);
}
static int os_rename(lua_State *L) {
const char *fromname = luaL_checkstring(L, 1);
const char *toname = luaL_checkstring(L, 2);
errno = 0;
return luaL_fileresult(L, rename(fromname, toname) == 0, NULL);
}
static int os_tmpname(lua_State *L) {
char buff[LUA_TMPNAMBUFSIZE];
int err;
lua_tmpnam(buff, err);
if (l_unlikely(err))
return luaL_error(L, "unable to generate a unique filename");
lua_pushstring(L, buff);
return 1;
}
}
static int os_remove (lua_State *L) {
const char *filename = luaL_checkstring(L, 1);
errno = 0;
return luaL_fileresult(L, remove(filename) == 0, filename);
static int os_getenv(lua_State *L) {
lua_pushstring(L, getenv(luaL_checkstring(L, 1))); /* if NULL push nil */
return 1;
}
static int os_rename (lua_State *L) {
const char *fromname = luaL_checkstring(L, 1);
const char *toname = luaL_checkstring(L, 2);
errno = 0;
return luaL_fileresult(L, rename(fromname, toname) == 0, NULL);
}
static int os_tmpname (lua_State *L) {
char buff[LUA_TMPNAMBUFSIZE];
int err;
lua_tmpnam(buff, err);
if (l_unlikely(err))
return luaL_error(L, "unable to generate a unique filename");
lua_pushstring(L, buff);
return 1;
}
static int os_getenv (lua_State *L) {
lua_pushstring(L, getenv(luaL_checkstring(L, 1))); /* if NULL push nil */
return 1;
}
static int os_clock (lua_State *L) {
lua_pushnumber(L, ((lua_Number)clock())/(lua_Number)CLOCKS_PER_SEC);
return 1;
static int os_clock(lua_State *L) {
lua_pushnumber(L, ((lua_Number)clock()) / (lua_Number)CLOCKS_PER_SEC);
return 1;
}
@ -208,92 +208,91 @@ static int os_clock (lua_State *L) {
** time 0x1.e1853b0d184f6p+55 would cause an overflow when adding 1900
** to compute the year.
*/
static void setfield (lua_State *L, const char *key, int value, int delta) {
#if (defined(LUA_NUMTIME) && LUA_MAXINTEGER <= INT_MAX)
static void setfield(lua_State *L, const char *key, int value, int delta) {
#if (defined(LUA_NUMTIME) && LUA_MAXINTEGER <= INT_MAX)
if (l_unlikely(value > LUA_MAXINTEGER - delta))
luaL_error(L, "field '%s' is out-of-bound", key);
#endif
lua_pushinteger(L, (lua_Integer)value + delta);
lua_setfield(L, -2, key);
luaL_error(L, "field '%s' is out-of-bound", key);
#endif
lua_pushinteger(L, (lua_Integer)value + delta);
lua_setfield(L, -2, key);
}
static void setboolfield (lua_State *L, const char *key, int value) {
if (value < 0) /* undefined? */
return; /* does not set field */
lua_pushboolean(L, value);
lua_setfield(L, -2, key);
static void setboolfield(lua_State *L, const char *key, int value) {
if (value < 0) /* undefined? */
return; /* does not set field */
lua_pushboolean(L, value);
lua_setfield(L, -2, key);
}
/*
** Set all fields from structure 'tm' in the table on top of the stack
*/
static void setallfields (lua_State *L, struct tm *stm) {
setfield(L, "year", stm->tm_year, 1900);
setfield(L, "month", stm->tm_mon, 1);
setfield(L, "day", stm->tm_mday, 0);
setfield(L, "hour", stm->tm_hour, 0);
setfield(L, "min", stm->tm_min, 0);
setfield(L, "sec", stm->tm_sec, 0);
setfield(L, "yday", stm->tm_yday, 1);
setfield(L, "wday", stm->tm_wday, 1);
setboolfield(L, "isdst", stm->tm_isdst);
static void setallfields(lua_State *L, struct tm *stm) {
setfield(L, "year", stm->tm_year, 1900);
setfield(L, "month", stm->tm_mon, 1);
setfield(L, "day", stm->tm_mday, 0);
setfield(L, "hour", stm->tm_hour, 0);
setfield(L, "min", stm->tm_min, 0);
setfield(L, "sec", stm->tm_sec, 0);
setfield(L, "yday", stm->tm_yday, 1);
setfield(L, "wday", stm->tm_wday, 1);
setboolfield(L, "isdst", stm->tm_isdst);
}
static int getboolfield (lua_State *L, const char *key) {
int res;
res = (lua_getfield(L, -1, key) == LUA_TNIL) ? -1 : lua_toboolean(L, -1);
lua_pop(L, 1);
return res;
static int getboolfield(lua_State *L, const char *key) {
int res;
res = (lua_getfield(L, -1, key) == LUA_TNIL) ? -1 : lua_toboolean(L, -1);
lua_pop(L, 1);
return res;
}
static int getfield (lua_State *L, const char *key, int d, int delta) {
int isnum;
int t = lua_getfield(L, -1, key); /* get field and its type */
lua_Integer res = lua_tointegerx(L, -1, &isnum);
if (!isnum) { /* field is not an integer? */
if (l_unlikely(t != LUA_TNIL)) /* some other value? */
return luaL_error(L, "field '%s' is not an integer", key);
else if (l_unlikely(d < 0)) /* absent field; no default? */
return luaL_error(L, "field '%s' missing in date table", key);
res = d;
}
else {
if (!(res >= 0 ? res - delta <= INT_MAX : INT_MIN + delta <= res))
return luaL_error(L, "field '%s' is out-of-bound", key);
res -= delta;
}
lua_pop(L, 1);
return (int)res;
}
static const char *checkoption (lua_State *L, const char *conv,
ptrdiff_t convlen, char *buff) {
const char *option = LUA_STRFTIMEOPTIONS;
int oplen = 1; /* length of options being checked */
for (; *option != '\0' && oplen <= convlen; option += oplen) {
if (*option == '|') /* next block? */
oplen++; /* will check options with next length (+1) */
else if (memcmp(conv, option, oplen) == 0) { /* match? */
memcpy(buff, conv, oplen); /* copy valid option to buffer */
buff[oplen] = '\0';
return conv + oplen; /* return next item */
static int getfield(lua_State *L, const char *key, int d, int delta) {
int isnum;
int t = lua_getfield(L, -1, key); /* get field and its type */
lua_Integer res = lua_tointegerx(L, -1, &isnum);
if (!isnum) { /* field is not an integer? */
if (l_unlikely(t != LUA_TNIL)) /* some other value? */
return luaL_error(L, "field '%s' is not an integer", key);
else if (l_unlikely(d < 0)) /* absent field; no default? */
return luaL_error(L, "field '%s' missing in date table", key);
res = d;
} else {
if (!(res >= 0 ? res - delta <= INT_MAX : INT_MIN + delta <= res))
return luaL_error(L, "field '%s' is out-of-bound", key);
res -= delta;
}
}
luaL_argerror(L, 1,
lua_pushfstring(L, "invalid conversion specifier '%%%s'", conv));
return conv; /* to avoid warnings */
lua_pop(L, 1);
return (int)res;
}
static time_t l_checktime (lua_State *L, int arg) {
l_timet t = l_gettime(L, arg);
luaL_argcheck(L, (time_t)t == t, arg, "time out-of-bounds");
return (time_t)t;
static const char *checkoption(lua_State *L, const char *conv,
ptrdiff_t convlen, char *buff) {
const char *option = LUA_STRFTIMEOPTIONS;
int oplen = 1; /* length of options being checked */
for (; *option != '\0' && oplen <= convlen; option += oplen) {
if (*option == '|') /* next block? */
oplen++; /* will check options with next length (+1) */
else if (memcmp(conv, option, oplen) == 0) { /* match? */
memcpy(buff, conv, oplen); /* copy valid option to buffer */
buff[oplen] = '\0';
return conv + oplen; /* return next item */
}
}
luaL_argerror(L, 1,
lua_pushfstring(L, "invalid conversion specifier '%%%s'", conv));
return conv; /* to avoid warnings */
}
static time_t l_checktime(lua_State *L, int arg) {
l_timet t = l_gettime(L, arg);
luaL_argcheck(L, (time_t)t == t, arg, "time out-of-bounds");
return (time_t)t;
}
@ -301,130 +300,130 @@ static time_t l_checktime (lua_State *L, int arg) {
#define SIZETIMEFMT 250
static int os_date (lua_State *L) {
size_t slen;
const char *s = luaL_optlstring(L, 1, "%c", &slen);
time_t t = luaL_opt(L, l_checktime, 2, time(NULL));
const char *se = s + slen; /* 's' end */
struct tm tmr, *stm;
if (*s == '!') { /* UTC? */
stm = l_gmtime(&t, &tmr);
s++; /* skip '!' */
}
else
stm = l_localtime(&t, &tmr);
if (stm == NULL) /* invalid date? */
return luaL_error(L,
"date result cannot be represented in this installation");
if (strcmp(s, "*t") == 0) {
lua_createtable(L, 0, 9); /* 9 = number of fields */
setallfields(L, stm);
}
else {
char cc[4]; /* buffer for individual conversion specifiers */
luaL_Buffer b;
cc[0] = '%';
luaL_buffinit(L, &b);
while (s < se) {
if (*s != '%') /* not a conversion specifier? */
luaL_addchar(&b, *s++);
else {
size_t reslen;
char *buff = luaL_prepbuffsize(&b, SIZETIMEFMT);
s++; /* skip '%' */
s = checkoption(L, s, se - s, cc + 1); /* copy specifier to 'cc' */
reslen = strftime(buff, SIZETIMEFMT, cc, stm);
luaL_addsize(&b, reslen);
}
static int os_date(lua_State *L) {
size_t slen;
const char *s = luaL_optlstring(L, 1, "%c", &slen);
time_t t = luaL_opt(L, l_checktime, 2, time(NULL));
const char *se = s + slen; /* 's' end */
struct tm tmr, *stm;
if (*s == '!') { /* UTC? */
stm = l_gmtime(&t, &tmr);
s++; /* skip '!' */
} else
stm = l_localtime(&t, &tmr);
if (stm == NULL) /* invalid date? */
return luaL_error(L,
"date result cannot be represented in this installation");
if (strcmp(s, "*t") == 0) {
lua_createtable(L, 0, 9); /* 9 = number of fields */
setallfields(L, stm);
} else {
char cc[4]; /* buffer for individual conversion specifiers */
luaL_Buffer b;
cc[0] = '%';
luaL_buffinit(L, &b);
while (s < se) {
if (*s != '%') /* not a conversion specifier? */
luaL_addchar(&b, *s++);
else {
size_t reslen;
char *buff = luaL_prepbuffsize(&b, SIZETIMEFMT);
s++; /* skip '%' */
s = checkoption(L, s, se - s, cc + 1); /* copy specifier to 'cc' */
reslen = strftime(buff, SIZETIMEFMT, cc, stm);
luaL_addsize(&b, reslen);
}
}
luaL_pushresult(&b);
}
luaL_pushresult(&b);
}
return 1;
return 1;
}
static int os_time (lua_State *L) {
time_t t;
if (lua_isnoneornil(L, 1)) /* called without args? */
t = time(NULL); /* get current time */
else {
struct tm ts;
luaL_checktype(L, 1, LUA_TTABLE);
lua_settop(L, 1); /* make sure table is at the top */
ts.tm_year = getfield(L, "year", -1, 1900);
ts.tm_mon = getfield(L, "month", -1, 1);
ts.tm_mday = getfield(L, "day", -1, 0);
ts.tm_hour = getfield(L, "hour", 12, 0);
ts.tm_min = getfield(L, "min", 0, 0);
ts.tm_sec = getfield(L, "sec", 0, 0);
ts.tm_isdst = getboolfield(L, "isdst");
t = mktime(&ts);
setallfields(L, &ts); /* update fields with normalized values */
}
if (t != (time_t)(l_timet)t || t == (time_t)(-1))
return luaL_error(L,
"time result cannot be represented in this installation");
l_pushtime(L, t);
return 1;
static int os_time(lua_State *L) {
time_t t;
if (lua_isnoneornil(L, 1)) /* called without args? */
t = time(NULL); /* get current time */
else {
struct tm ts;
luaL_checktype(L, 1, LUA_TTABLE);
lua_settop(L, 1); /* make sure table is at the top */
ts.tm_year = getfield(L, "year", -1, 1900);
ts.tm_mon = getfield(L, "month", -1, 1);
ts.tm_mday = getfield(L, "day", -1, 0);
ts.tm_hour = getfield(L, "hour", 12, 0);
ts.tm_min = getfield(L, "min", 0, 0);
ts.tm_sec = getfield(L, "sec", 0, 0);
ts.tm_isdst = getboolfield(L, "isdst");
t = mktime(&ts);
setallfields(L, &ts); /* update fields with normalized values */
}
if (t != (time_t)(l_timet)t || t == (time_t)(-1))
return luaL_error(L,
"time result cannot be represented in this installation");
l_pushtime(L, t);
return 1;
}
static int os_difftime (lua_State *L) {
time_t t1 = l_checktime(L, 1);
time_t t2 = l_checktime(L, 2);
lua_pushnumber(L, (lua_Number)difftime(t1, t2));
return 1;
static int os_difftime(lua_State *L) {
time_t t1 = l_checktime(L, 1);
time_t t2 = l_checktime(L, 2);
lua_pushnumber(L, (lua_Number)difftime(t1, t2));
return 1;
}
/* }====================================================== */
static int os_setlocale (lua_State *L) {
static const int cat[] = {LC_ALL, LC_COLLATE, LC_CTYPE, LC_MONETARY,
LC_NUMERIC, LC_TIME};
static const char *const catnames[] = {"all", "collate", "ctype", "monetary",
"numeric", "time", NULL};
const char *l = luaL_optstring(L, 1, NULL);
int op = luaL_checkoption(L, 2, "all", catnames);
lua_pushstring(L, setlocale(cat[op], l));
return 1;
static int os_setlocale(lua_State *L) {
static const int cat[] = {LC_ALL, LC_COLLATE, LC_CTYPE, LC_MONETARY,
LC_NUMERIC, LC_TIME
};
static const char *const catnames[] = {"all", "collate", "ctype", "monetary",
"numeric", "time", NULL
};
const char *l = luaL_optstring(L, 1, NULL);
int op = luaL_checkoption(L, 2, "all", catnames);
lua_pushstring(L, setlocale(cat[op], l));
return 1;
}
static int os_exit (lua_State *L) {
int status;
if (lua_isboolean(L, 1))
status = (lua_toboolean(L, 1) ? EXIT_SUCCESS : EXIT_FAILURE);
else
status = (int)luaL_optinteger(L, 1, EXIT_SUCCESS);
if (lua_toboolean(L, 2))
lua_close(L);
if (L) exit(status); /* 'if' to avoid warnings for unreachable 'return' */
return 0;
static int os_exit(lua_State *L) {
int status;
if (lua_isboolean(L, 1))
status = (lua_toboolean(L, 1) ? EXIT_SUCCESS : EXIT_FAILURE);
else
status = (int)luaL_optinteger(L, 1, EXIT_SUCCESS);
if (lua_toboolean(L, 2))
lua_close(L);
if (L) exit(status); /* 'if' to avoid warnings for unreachable 'return' */
return 0;
}
static const luaL_Reg syslib[] = {
{"clock", os_clock},
{"date", os_date},
{"difftime", os_difftime},
{"execute", os_execute},
{"exit", os_exit},
{"getenv", os_getenv},
{"remove", os_remove},
{"rename", os_rename},
{"setlocale", os_setlocale},
{"time", os_time},
{"tmpname", os_tmpname},
{NULL, NULL}
{"clock", os_clock},
{"date", os_date},
{"difftime", os_difftime},
{"execute", os_execute},
{"exit", os_exit},
{"getenv", os_getenv},
{"remove", os_remove},
{"rename", os_rename},
{"setlocale", os_setlocale},
{"time", os_time},
{"tmpname", os_tmpname},
{NULL, NULL}
};
/* }====================================================== */
LUAMOD_API int luaopen_os (lua_State *L) {
luaL_newlib(L, syslib);
return 1;
LUAMOD_API int luaopen_os(lua_State *L) {
luaL_newlib(L, syslib);
return 1;
}

File diff suppressed because it is too large Load diff

View file

@ -23,41 +23,41 @@
/* kinds of variables/expressions */
typedef enum {
VVOID, /* when 'expdesc' describes the last expression of a list,
VVOID, /* when 'expdesc' describes the last expression of a list,
this kind means an empty list (so, no expression) */
VNIL, /* constant nil */
VTRUE, /* constant true */
VFALSE, /* constant false */
VK, /* constant in 'k'; info = index of constant in 'k' */
VKFLT, /* floating constant; nval = numerical float value */
VKINT, /* integer constant; ival = numerical integer value */
VKSTR, /* string constant; strval = TString address;
VNIL, /* constant nil */
VTRUE, /* constant true */
VFALSE, /* constant false */
VK, /* constant in 'k'; info = index of constant in 'k' */
VKFLT, /* floating constant; nval = numerical float value */
VKINT, /* integer constant; ival = numerical integer value */
VKSTR, /* string constant; strval = TString address;
(string is fixed by the lexer) */
VNONRELOC, /* expression has its value in a fixed register;
VNONRELOC, /* expression has its value in a fixed register;
info = result register */
VLOCAL, /* local variable; var.ridx = register index;
VLOCAL, /* local variable; var.ridx = register index;
var.vidx = relative index in 'actvar.arr' */
VUPVAL, /* upvalue variable; info = index of upvalue in 'upvalues' */
VCONST, /* compile-time <const> variable;
VUPVAL, /* upvalue variable; info = index of upvalue in 'upvalues' */
VCONST, /* compile-time <const> variable;
info = absolute index in 'actvar.arr' */
VINDEXED, /* indexed variable;
VINDEXED, /* indexed variable;
ind.t = table register;
ind.idx = key's R index */
VINDEXUP, /* indexed upvalue;
VINDEXUP, /* indexed upvalue;
ind.t = table upvalue;
ind.idx = key's K index */
VINDEXI, /* indexed variable with constant integer;
VINDEXI, /* indexed variable with constant integer;
ind.t = table register;
ind.idx = key's value */
VINDEXSTR, /* indexed variable with literal string;
VINDEXSTR, /* indexed variable with literal string;
ind.t = table register;
ind.idx = key's K index */
VJMP, /* expression is a test/comparison;
VJMP, /* expression is a test/comparison;
info = pc of corresponding jump instruction */
VRELOC, /* expression can put result in any register;
VRELOC, /* expression can put result in any register;
info = instruction pc */
VCALL, /* expression is a function call; info = instruction pc */
VVARARG /* vararg expression; info = instruction pc */
VCALL, /* expression is a function call; info = instruction pc */
VVARARG /* vararg expression; info = instruction pc */
} expkind;
@ -66,23 +66,23 @@ typedef enum {
typedef struct expdesc {
expkind k;
union {
lua_Integer ival; /* for VKINT */
lua_Number nval; /* for VKFLT */
TString *strval; /* for VKSTR */
int info; /* for generic use */
struct { /* for indexed variables */
short idx; /* index (R or "long" K) */
lu_byte t; /* table (register or upvalue) */
} ind;
struct { /* for local variables */
lu_byte ridx; /* register holding the variable */
unsigned short vidx; /* compiler index (in 'actvar.arr') */
} var;
} u;
int t; /* patch list of 'exit when true' */
int f; /* patch list of 'exit when false' */
expkind k;
union {
lua_Integer ival; /* for VKINT */
lua_Number nval; /* for VKFLT */
TString *strval; /* for VKSTR */
int info; /* for generic use */
struct { /* for indexed variables */
short idx; /* index (R or "long" K) */
lu_byte t; /* table (register or upvalue) */
} ind;
struct { /* for local variables */
lu_byte ridx; /* register holding the variable */
unsigned short vidx; /* compiler index (in 'actvar.arr') */
} var;
} u;
int t; /* patch list of 'exit when true' */
int f; /* patch list of 'exit when false' */
} expdesc;
@ -94,45 +94,45 @@ typedef struct expdesc {
/* description of an active local variable */
typedef union Vardesc {
struct {
TValuefields; /* constant value (if it is a compile-time constant) */
lu_byte kind;
lu_byte ridx; /* register holding the variable */
short pidx; /* index of the variable in the Proto's 'locvars' array */
TString *name; /* variable name */
} vd;
TValue k; /* constant value (if any) */
struct {
TValuefields; /* constant value (if it is a compile-time constant) */
lu_byte kind;
lu_byte ridx; /* register holding the variable */
short pidx; /* index of the variable in the Proto's 'locvars' array */
TString *name; /* variable name */
} vd;
TValue k; /* constant value (if any) */
} Vardesc;
/* description of pending goto statements and label statements */
typedef struct Labeldesc {
TString *name; /* label identifier */
int pc; /* position in code */
int line; /* line where it appeared */
lu_byte nactvar; /* number of active variables in that position */
lu_byte close; /* goto that escapes upvalues */
TString *name; /* label identifier */
int pc; /* position in code */
int line; /* line where it appeared */
lu_byte nactvar; /* number of active variables in that position */
lu_byte close; /* goto that escapes upvalues */
} Labeldesc;
/* list of labels or gotos */
typedef struct Labellist {
Labeldesc *arr; /* array */
int n; /* number of entries in use */
int size; /* array size */
Labeldesc *arr; /* array */
int n; /* number of entries in use */
int size; /* array size */
} Labellist;
/* dynamic structures used by the parser */
typedef struct Dyndata {
struct { /* list of all active local variables */
Vardesc *arr;
int n;
int size;
} actvar;
Labellist gt; /* list of pending gotos */
Labellist label; /* list of active labels */
struct { /* list of all active local variables */
Vardesc *arr;
int n;
int size;
} actvar;
Labellist gt; /* list of pending gotos */
Labellist label; /* list of active labels */
} Dyndata;
@ -142,30 +142,30 @@ struct BlockCnt; /* defined in lparser.c */
/* state needed to generate code for a given function */
typedef struct FuncState {
Proto *f; /* current function header */
struct FuncState *prev; /* enclosing function */
struct LexState *ls; /* lexical state */
struct BlockCnt *bl; /* chain of current blocks */
int pc; /* next position to code (equivalent to 'ncode') */
int lasttarget; /* 'label' of last 'jump label' */
int previousline; /* last line that was saved in 'lineinfo' */
int nk; /* number of elements in 'k' */
int np; /* number of elements in 'p' */
int nabslineinfo; /* number of elements in 'abslineinfo' */
int firstlocal; /* index of first local var (in Dyndata array) */
int firstlabel; /* index of first label (in 'dyd->label->arr') */
short ndebugvars; /* number of elements in 'f->locvars' */
lu_byte nactvar; /* number of active local variables */
lu_byte nups; /* number of upvalues */
lu_byte freereg; /* first free register */
lu_byte iwthabs; /* instructions issued since last absolute line info */
lu_byte needclose; /* function needs to close upvalues when returning */
Proto *f; /* current function header */
struct FuncState *prev; /* enclosing function */
struct LexState *ls; /* lexical state */
struct BlockCnt *bl; /* chain of current blocks */
int pc; /* next position to code (equivalent to 'ncode') */
int lasttarget; /* 'label' of last 'jump label' */
int previousline; /* last line that was saved in 'lineinfo' */
int nk; /* number of elements in 'k' */
int np; /* number of elements in 'p' */
int nabslineinfo; /* number of elements in 'abslineinfo' */
int firstlocal; /* index of first local var (in Dyndata array) */
int firstlabel; /* index of first label (in 'dyd->label->arr') */
short ndebugvars; /* number of elements in 'f->locvars' */
lu_byte nactvar; /* number of active local variables */
lu_byte nups; /* number of upvalues */
lu_byte freereg; /* first free register */
lu_byte iwthabs; /* instructions issued since last absolute line info */
lu_byte needclose; /* function needs to close upvalues when returning */
} FuncState;
LUAI_FUNC int luaY_nvarstack (FuncState *fs);
LUAI_FUNC LClosure *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff,
Dyndata *dyd, const char *name, int firstchar);
LUAI_FUNC int luaY_nvarstack(FuncState *fs);
LUAI_FUNC LClosure *luaY_parser(lua_State *L, ZIO *z, Mbuffer *buff,
Dyndata *dyd, const char *name, int firstchar);
#endif

View file

@ -33,8 +33,8 @@
** thread state + extra space
*/
typedef struct LX {
lu_byte extra_[LUA_EXTRASPACE];
lua_State l;
lu_byte extra_[LUA_EXTRASPACE];
lua_State l;
} LX;
@ -42,8 +42,8 @@ typedef struct LX {
** Main thread combines a thread state and the global state
*/
typedef struct LG {
LX l;
global_State g;
LX l;
global_State g;
} LG;
@ -68,15 +68,15 @@ typedef struct LG {
{ size_t t = cast_sizet(e); \
memcpy(b + p, &t, sizeof(t)); p += sizeof(t); }
static unsigned int luai_makeseed (lua_State *L) {
char buff[3 * sizeof(size_t)];
unsigned int h = cast_uint(time(NULL));
int p = 0;
addbuff(buff, p, L); /* heap variable */
addbuff(buff, p, &h); /* local variable */
addbuff(buff, p, &lua_newstate); /* public function */
lua_assert(p == sizeof(buff));
return luaS_hash(buff, p, h);
static unsigned int luai_makeseed(lua_State *L) {
char buff[3 * sizeof(size_t)];
unsigned int h = cast_uint(time(NULL));
int p = 0;
addbuff(buff, p, L); /* heap variable */
addbuff(buff, p, &h); /* local variable */
addbuff(buff, p, &lua_newstate); /* public function */
lua_assert(p == sizeof(buff));
return luaS_hash(buff, p, h);
}
#endif
@ -86,48 +86,49 @@ static unsigned int luai_makeseed (lua_State *L) {
** set GCdebt to a new value keeping the value (totalbytes + GCdebt)
** invariant (and avoiding underflows in 'totalbytes')
*/
void luaE_setdebt (global_State *g, l_mem debt) {
l_mem tb = gettotalbytes(g);
lua_assert(tb > 0);
if (debt < tb - MAX_LMEM)
debt = tb - MAX_LMEM; /* will make 'totalbytes == MAX_LMEM' */
g->totalbytes = tb - debt;
g->GCdebt = debt;
void luaE_setdebt(global_State *g, l_mem debt) {
l_mem tb = gettotalbytes(g);
lua_assert(tb > 0);
if (debt < tb - MAX_LMEM)
debt = tb - MAX_LMEM; /* will make 'totalbytes == MAX_LMEM' */
g->totalbytes = tb - debt;
g->GCdebt = debt;
}
LUA_API int lua_setcstacklimit (lua_State *L, unsigned int limit) {
UNUSED(L); UNUSED(limit);
return LUAI_MAXCCALLS; /* warning?? */
LUA_API int lua_setcstacklimit(lua_State *L, unsigned int limit) {
UNUSED(L);
UNUSED(limit);
return LUAI_MAXCCALLS; /* warning?? */
}
CallInfo *luaE_extendCI (lua_State *L) {
CallInfo *ci;
lua_assert(L->ci->next == NULL);
ci = luaM_new(L, CallInfo);
lua_assert(L->ci->next == NULL);
L->ci->next = ci;
ci->previous = L->ci;
ci->next = NULL;
ci->u.l.trap = 0;
L->nci++;
return ci;
CallInfo *luaE_extendCI(lua_State *L) {
CallInfo *ci;
lua_assert(L->ci->next == NULL);
ci = luaM_new(L, CallInfo);
lua_assert(L->ci->next == NULL);
L->ci->next = ci;
ci->previous = L->ci;
ci->next = NULL;
ci->u.l.trap = 0;
L->nci++;
return ci;
}
/*
** free all CallInfo structures not in use by a thread
*/
static void freeCI (lua_State *L) {
CallInfo *ci = L->ci;
CallInfo *next = ci->next;
ci->next = NULL;
while ((ci = next) != NULL) {
next = ci->next;
luaM_free(L, ci);
L->nci--;
}
static void freeCI(lua_State *L) {
CallInfo *ci = L->ci;
CallInfo *next = ci->next;
ci->next = NULL;
while ((ci = next) != NULL) {
next = ci->next;
luaM_free(L, ci);
L->nci--;
}
}
@ -135,23 +136,23 @@ static void freeCI (lua_State *L) {
** free half of the CallInfo structures not in use by a thread,
** keeping the first one.
*/
void luaE_shrinkCI (lua_State *L) {
CallInfo *ci = L->ci->next; /* first free CallInfo */
CallInfo *next;
if (ci == NULL)
return; /* no extra elements */
while ((next = ci->next) != NULL) { /* two extra elements? */
CallInfo *next2 = next->next; /* next's next */
ci->next = next2; /* remove next from the list */
L->nci--;
luaM_free(L, next); /* free next */
if (next2 == NULL)
break; /* no more elements */
else {
next2->previous = ci;
ci = next2; /* continue */
void luaE_shrinkCI(lua_State *L) {
CallInfo *ci = L->ci->next; /* first free CallInfo */
CallInfo *next;
if (ci == NULL)
return; /* no extra elements */
while ((next = ci->next) != NULL) { /* two extra elements? */
CallInfo *next2 = next->next; /* next's next */
ci->next = next2; /* remove next from the list */
L->nci--;
luaM_free(L, next); /* free next */
if (next2 == NULL)
break; /* no more elements */
else {
next2->previous = ci;
ci = next2; /* continue */
}
}
}
}
@ -162,83 +163,84 @@ void luaE_shrinkCI (lua_State *L) {
** not much larger, does not report an error (to allow overflow
** handling to work).
*/
void luaE_checkcstack (lua_State *L) {
if (getCcalls(L) == LUAI_MAXCCALLS)
luaG_runerror(L, "C stack overflow");
else if (getCcalls(L) >= (LUAI_MAXCCALLS / 10 * 11))
luaD_throw(L, LUA_ERRERR); /* error while handling stack error */
void luaE_checkcstack(lua_State *L) {
if (getCcalls(L) == LUAI_MAXCCALLS)
luaG_runerror(L, "C stack overflow");
else if (getCcalls(L) >= (LUAI_MAXCCALLS / 10 * 11))
luaD_throw(L, LUA_ERRERR); /* error while handling stack error */
}
LUAI_FUNC void luaE_incCstack (lua_State *L) {
L->nCcalls++;
if (l_unlikely(getCcalls(L) >= LUAI_MAXCCALLS))
luaE_checkcstack(L);
LUAI_FUNC void luaE_incCstack(lua_State *L) {
L->nCcalls++;
if (l_unlikely(getCcalls(L) >= LUAI_MAXCCALLS))
luaE_checkcstack(L);
}
static void stack_init (lua_State *L1, lua_State *L) {
int i; CallInfo *ci;
/* initialize stack array */
L1->stack.p = luaM_newvector(L, BASIC_STACK_SIZE + EXTRA_STACK, StackValue);
L1->tbclist.p = L1->stack.p;
for (i = 0; i < BASIC_STACK_SIZE + EXTRA_STACK; i++)
setnilvalue(s2v(L1->stack.p + i)); /* erase new stack */
L1->top.p = L1->stack.p;
L1->stack_last.p = L1->stack.p + BASIC_STACK_SIZE;
/* initialize first ci */
ci = &L1->base_ci;
ci->next = ci->previous = NULL;
ci->callstatus = CIST_C;
ci->func.p = L1->top.p;
ci->u.c.k = NULL;
ci->nresults = 0;
setnilvalue(s2v(L1->top.p)); /* 'function' entry for this 'ci' */
L1->top.p++;
ci->top.p = L1->top.p + LUA_MINSTACK;
L1->ci = ci;
static void stack_init(lua_State *L1, lua_State *L) {
int i;
CallInfo *ci;
/* initialize stack array */
L1->stack.p = luaM_newvector(L, BASIC_STACK_SIZE + EXTRA_STACK, StackValue);
L1->tbclist.p = L1->stack.p;
for (i = 0; i < BASIC_STACK_SIZE + EXTRA_STACK; i++)
setnilvalue(s2v(L1->stack.p + i)); /* erase new stack */
L1->top.p = L1->stack.p;
L1->stack_last.p = L1->stack.p + BASIC_STACK_SIZE;
/* initialize first ci */
ci = &L1->base_ci;
ci->next = ci->previous = NULL;
ci->callstatus = CIST_C;
ci->func.p = L1->top.p;
ci->u.c.k = NULL;
ci->nresults = 0;
setnilvalue(s2v(L1->top.p)); /* 'function' entry for this 'ci' */
L1->top.p++;
ci->top.p = L1->top.p + LUA_MINSTACK;
L1->ci = ci;
}
static void freestack (lua_State *L) {
if (L->stack.p == NULL)
return; /* stack not completely built yet */
L->ci = &L->base_ci; /* free the entire 'ci' list */
freeCI(L);
lua_assert(L->nci == 0);
luaM_freearray(L, L->stack.p, stacksize(L) + EXTRA_STACK); /* free stack */
static void freestack(lua_State *L) {
if (L->stack.p == NULL)
return; /* stack not completely built yet */
L->ci = &L->base_ci; /* free the entire 'ci' list */
freeCI(L);
lua_assert(L->nci == 0);
luaM_freearray(L, L->stack.p, stacksize(L) + EXTRA_STACK); /* free stack */
}
/*
** Create registry table and its predefined values
*/
static void init_registry (lua_State *L, global_State *g) {
/* create registry */
Table *registry = luaH_new(L);
sethvalue(L, &g->l_registry, registry);
luaH_resize(L, registry, LUA_RIDX_LAST, 0);
/* registry[LUA_RIDX_MAINTHREAD] = L */
setthvalue(L, &registry->array[LUA_RIDX_MAINTHREAD - 1], L);
/* registry[LUA_RIDX_GLOBALS] = new table (table of globals) */
sethvalue(L, &registry->array[LUA_RIDX_GLOBALS - 1], luaH_new(L));
static void init_registry(lua_State *L, global_State *g) {
/* create registry */
Table *registry = luaH_new(L);
sethvalue(L, &g->l_registry, registry);
luaH_resize(L, registry, LUA_RIDX_LAST, 0);
/* registry[LUA_RIDX_MAINTHREAD] = L */
setthvalue(L, &registry->array[LUA_RIDX_MAINTHREAD - 1], L);
/* registry[LUA_RIDX_GLOBALS] = new table (table of globals) */
sethvalue(L, &registry->array[LUA_RIDX_GLOBALS - 1], luaH_new(L));
}
/*
** open parts of the state that may cause memory-allocation errors.
*/
static void f_luaopen (lua_State *L, void *ud) {
global_State *g = G(L);
UNUSED(ud);
stack_init(L, L); /* init stack */
init_registry(L, g);
luaS_init(L);
luaT_init(L);
luaX_init(L);
g->gcstp = 0; /* allow gc */
setnilvalue(&g->nilvalue); /* now state is complete */
luai_userstateopen(L);
static void f_luaopen(lua_State *L, void *ud) {
global_State *g = G(L);
UNUSED(ud);
stack_init(L, L); /* init stack */
init_registry(L, g);
luaS_init(L);
luaT_init(L);
luaX_init(L);
g->gcstp = 0; /* allow gc */
setnilvalue(&g->nilvalue); /* now state is complete */
luai_userstateopen(L);
}
@ -246,200 +248,200 @@ static void f_luaopen (lua_State *L, void *ud) {
** preinitialize a thread with consistent values without allocating
** any memory (to avoid errors)
*/
static void preinit_thread (lua_State *L, global_State *g) {
G(L) = g;
L->stack.p = NULL;
L->ci = NULL;
L->nci = 0;
L->twups = L; /* thread has no upvalues */
L->nCcalls = 0;
L->errorJmp = NULL;
L->hook = NULL;
L->hookmask = 0;
L->basehookcount = 0;
L->allowhook = 1;
resethookcount(L);
L->openupval = NULL;
L->status = LUA_OK;
L->errfunc = 0;
L->oldpc = 0;
static void preinit_thread(lua_State *L, global_State *g) {
G(L) = g;
L->stack.p = NULL;
L->ci = NULL;
L->nci = 0;
L->twups = L; /* thread has no upvalues */
L->nCcalls = 0;
L->errorJmp = NULL;
L->hook = NULL;
L->hookmask = 0;
L->basehookcount = 0;
L->allowhook = 1;
resethookcount(L);
L->openupval = NULL;
L->status = LUA_OK;
L->errfunc = 0;
L->oldpc = 0;
}
static void close_state (lua_State *L) {
global_State *g = G(L);
if (!completestate(g)) /* closing a partially built state? */
luaC_freeallobjects(L); /* just collect its objects */
else { /* closing a fully built state */
L->ci = &L->base_ci; /* unwind CallInfo list */
luaD_closeprotected(L, 1, LUA_OK); /* close all upvalues */
luaC_freeallobjects(L); /* collect all objects */
luai_userstateclose(L);
}
luaM_freearray(L, G(L)->strt.hash, G(L)->strt.size);
freestack(L);
lua_assert(gettotalbytes(g) == sizeof(LG));
(*g->frealloc)(g->ud, fromstate(L), sizeof(LG), 0); /* free main block */
static void close_state(lua_State *L) {
global_State *g = G(L);
if (!completestate(g)) /* closing a partially built state? */
luaC_freeallobjects(L); /* just collect its objects */
else { /* closing a fully built state */
L->ci = &L->base_ci; /* unwind CallInfo list */
luaD_closeprotected(L, 1, LUA_OK); /* close all upvalues */
luaC_freeallobjects(L); /* collect all objects */
luai_userstateclose(L);
}
luaM_freearray(L, G(L)->strt.hash, G(L)->strt.size);
freestack(L);
lua_assert(gettotalbytes(g) == sizeof(LG));
(*g->frealloc)(g->ud, fromstate(L), sizeof(LG), 0); /* free main block */
}
LUA_API lua_State *lua_newthread (lua_State *L) {
global_State *g = G(L);
GCObject *o;
lua_State *L1;
lua_lock(L);
luaC_checkGC(L);
/* create new thread */
o = luaC_newobjdt(L, LUA_TTHREAD, sizeof(LX), offsetof(LX, l));
L1 = gco2th(o);
/* anchor it on L stack */
setthvalue2s(L, L->top.p, L1);
api_incr_top(L);
preinit_thread(L1, g);
L1->hookmask = L->hookmask;
L1->basehookcount = L->basehookcount;
L1->hook = L->hook;
resethookcount(L1);
/* initialize L1 extra space */
memcpy(lua_getextraspace(L1), lua_getextraspace(g->mainthread),
LUA_EXTRASPACE);
luai_userstatethread(L, L1);
stack_init(L1, L); /* init stack */
lua_unlock(L);
return L1;
LUA_API lua_State *lua_newthread(lua_State *L) {
global_State *g = G(L);
GCObject *o;
lua_State *L1;
lua_lock(L);
luaC_checkGC(L);
/* create new thread */
o = luaC_newobjdt(L, LUA_TTHREAD, sizeof(LX), offsetof(LX, l));
L1 = gco2th(o);
/* anchor it on L stack */
setthvalue2s(L, L->top.p, L1);
api_incr_top(L);
preinit_thread(L1, g);
L1->hookmask = L->hookmask;
L1->basehookcount = L->basehookcount;
L1->hook = L->hook;
resethookcount(L1);
/* initialize L1 extra space */
memcpy(lua_getextraspace(L1), lua_getextraspace(g->mainthread),
LUA_EXTRASPACE);
luai_userstatethread(L, L1);
stack_init(L1, L); /* init stack */
lua_unlock(L);
return L1;
}
void luaE_freethread (lua_State *L, lua_State *L1) {
LX *l = fromstate(L1);
luaF_closeupval(L1, L1->stack.p); /* close all upvalues */
lua_assert(L1->openupval == NULL);
luai_userstatefree(L, L1);
freestack(L1);
luaM_free(L, l);
void luaE_freethread(lua_State *L, lua_State *L1) {
LX *l = fromstate(L1);
luaF_closeupval(L1, L1->stack.p); /* close all upvalues */
lua_assert(L1->openupval == NULL);
luai_userstatefree(L, L1);
freestack(L1);
luaM_free(L, l);
}
int luaE_resetthread (lua_State *L, int status) {
CallInfo *ci = L->ci = &L->base_ci; /* unwind CallInfo list */
setnilvalue(s2v(L->stack.p)); /* 'function' entry for basic 'ci' */
ci->func.p = L->stack.p;
ci->callstatus = CIST_C;
if (status == LUA_YIELD)
status = LUA_OK;
L->status = LUA_OK; /* so it can run __close metamethods */
status = luaD_closeprotected(L, 1, status);
if (status != LUA_OK) /* errors? */
luaD_seterrorobj(L, status, L->stack.p + 1);
else
L->top.p = L->stack.p + 1;
ci->top.p = L->top.p + LUA_MINSTACK;
luaD_reallocstack(L, cast_int(ci->top.p - L->stack.p), 0);
return status;
int luaE_resetthread(lua_State *L, int status) {
CallInfo *ci = L->ci = &L->base_ci; /* unwind CallInfo list */
setnilvalue(s2v(L->stack.p)); /* 'function' entry for basic 'ci' */
ci->func.p = L->stack.p;
ci->callstatus = CIST_C;
if (status == LUA_YIELD)
status = LUA_OK;
L->status = LUA_OK; /* so it can run __close metamethods */
status = luaD_closeprotected(L, 1, status);
if (status != LUA_OK) /* errors? */
luaD_seterrorobj(L, status, L->stack.p + 1);
else
L->top.p = L->stack.p + 1;
ci->top.p = L->top.p + LUA_MINSTACK;
luaD_reallocstack(L, cast_int(ci->top.p - L->stack.p), 0);
return status;
}
LUA_API int lua_closethread (lua_State *L, lua_State *from) {
int status;
lua_lock(L);
L->nCcalls = (from) ? getCcalls(from) : 0;
status = luaE_resetthread(L, L->status);
lua_unlock(L);
return status;
LUA_API int lua_closethread(lua_State *L, lua_State *from) {
int status;
lua_lock(L);
L->nCcalls = (from) ? getCcalls(from) : 0;
status = luaE_resetthread(L, L->status);
lua_unlock(L);
return status;
}
/*
** Deprecated! Use 'lua_closethread' instead.
*/
LUA_API int lua_resetthread (lua_State *L) {
return lua_closethread(L, NULL);
LUA_API int lua_resetthread(lua_State *L) {
return lua_closethread(L, NULL);
}
LUA_API lua_State *lua_newstate (lua_Alloc f, void *ud) {
int i;
lua_State *L;
global_State *g;
LG *l = cast(LG *, (*f)(ud, NULL, LUA_TTHREAD, sizeof(LG)));
if (l == NULL) return NULL;
L = &l->l.l;
g = &l->g;
L->tt = LUA_VTHREAD;
g->currentwhite = bitmask(WHITE0BIT);
L->marked = luaC_white(g);
preinit_thread(L, g);
g->allgc = obj2gco(L); /* by now, only object is the main thread */
L->next = NULL;
incnny(L); /* main thread is always non yieldable */
g->frealloc = f;
g->ud = ud;
g->warnf = NULL;
g->ud_warn = NULL;
g->mainthread = L;
g->seed = luai_makeseed(L);
g->gcstp = GCSTPGC; /* no GC while building state */
g->strt.size = g->strt.nuse = 0;
g->strt.hash = NULL;
setnilvalue(&g->l_registry);
g->panic = NULL;
g->gcstate = GCSpause;
g->gckind = KGC_INC;
g->gcstopem = 0;
g->gcemergency = 0;
g->finobj = g->tobefnz = g->fixedgc = NULL;
g->firstold1 = g->survival = g->old1 = g->reallyold = NULL;
g->finobjsur = g->finobjold1 = g->finobjrold = NULL;
g->sweepgc = NULL;
g->gray = g->grayagain = NULL;
g->weak = g->ephemeron = g->allweak = NULL;
g->twups = NULL;
g->totalbytes = sizeof(LG);
g->GCdebt = 0;
g->lastatomic = 0;
setivalue(&g->nilvalue, 0); /* to signal that state is not yet built */
setgcparam(g->gcpause, LUAI_GCPAUSE);
setgcparam(g->gcstepmul, LUAI_GCMUL);
g->gcstepsize = LUAI_GCSTEPSIZE;
setgcparam(g->genmajormul, LUAI_GENMAJORMUL);
g->genminormul = LUAI_GENMINORMUL;
for (i=0; i < LUA_NUMTAGS; i++) g->mt[i] = NULL;
if (luaD_rawrunprotected(L, f_luaopen, NULL) != LUA_OK) {
/* memory allocation error: free partial state */
LUA_API lua_State *lua_newstate(lua_Alloc f, void *ud) {
int i;
lua_State *L;
global_State *g;
LG *l = cast(LG *, (*f)(ud, NULL, LUA_TTHREAD, sizeof(LG)));
if (l == NULL) return NULL;
L = &l->l.l;
g = &l->g;
L->tt = LUA_VTHREAD;
g->currentwhite = bitmask(WHITE0BIT);
L->marked = luaC_white(g);
preinit_thread(L, g);
g->allgc = obj2gco(L); /* by now, only object is the main thread */
L->next = NULL;
incnny(L); /* main thread is always non yieldable */
g->frealloc = f;
g->ud = ud;
g->warnf = NULL;
g->ud_warn = NULL;
g->mainthread = L;
g->seed = luai_makeseed(L);
g->gcstp = GCSTPGC; /* no GC while building state */
g->strt.size = g->strt.nuse = 0;
g->strt.hash = NULL;
setnilvalue(&g->l_registry);
g->panic = NULL;
g->gcstate = GCSpause;
g->gckind = KGC_INC;
g->gcstopem = 0;
g->gcemergency = 0;
g->finobj = g->tobefnz = g->fixedgc = NULL;
g->firstold1 = g->survival = g->old1 = g->reallyold = NULL;
g->finobjsur = g->finobjold1 = g->finobjrold = NULL;
g->sweepgc = NULL;
g->gray = g->grayagain = NULL;
g->weak = g->ephemeron = g->allweak = NULL;
g->twups = NULL;
g->totalbytes = sizeof(LG);
g->GCdebt = 0;
g->lastatomic = 0;
setivalue(&g->nilvalue, 0); /* to signal that state is not yet built */
setgcparam(g->gcpause, LUAI_GCPAUSE);
setgcparam(g->gcstepmul, LUAI_GCMUL);
g->gcstepsize = LUAI_GCSTEPSIZE;
setgcparam(g->genmajormul, LUAI_GENMAJORMUL);
g->genminormul = LUAI_GENMINORMUL;
for (i = 0; i < LUA_NUMTAGS; i++) g->mt[i] = NULL;
if (luaD_rawrunprotected(L, f_luaopen, NULL) != LUA_OK) {
/* memory allocation error: free partial state */
close_state(L);
L = NULL;
}
return L;
}
LUA_API void lua_close(lua_State *L) {
lua_lock(L);
L = G(L)->mainthread; /* only the main thread can be closed */
close_state(L);
L = NULL;
}
return L;
}
LUA_API void lua_close (lua_State *L) {
lua_lock(L);
L = G(L)->mainthread; /* only the main thread can be closed */
close_state(L);
}
void luaE_warning (lua_State *L, const char *msg, int tocont) {
lua_WarnFunction wf = G(L)->warnf;
if (wf != NULL)
wf(G(L)->ud_warn, msg, tocont);
void luaE_warning(lua_State *L, const char *msg, int tocont) {
lua_WarnFunction wf = G(L)->warnf;
if (wf != NULL)
wf(G(L)->ud_warn, msg, tocont);
}
/*
** Generate a warning from an error message
*/
void luaE_warnerror (lua_State *L, const char *where) {
TValue *errobj = s2v(L->top.p - 1); /* error object */
const char *msg = (ttisstring(errobj))
? getstr(tsvalue(errobj))
: "error object is not a string";
/* produce warning "error in %s (%s)" (where, msg) */
luaE_warning(L, "error in ", 1);
luaE_warning(L, where, 1);
luaE_warning(L, " (", 1);
luaE_warning(L, msg, 1);
luaE_warning(L, ")", 0);
void luaE_warnerror(lua_State *L, const char *where) {
TValue *errobj = s2v(L->top.p - 1); /* error object */
const char *msg = (ttisstring(errobj))
? getstr(tsvalue(errobj))
: "error object is not a string";
/* produce warning "error in %s (%s)" (where, msg) */
luaE_warning(L, "error in ", 1);
luaE_warning(L, where, 1);
luaE_warning(L, " (", 1);
luaE_warning(L, msg, 1);
luaE_warning(L, ")", 0);
}

View file

@ -153,9 +153,9 @@ struct lua_longjmp; /* defined in ldo.c */
typedef struct stringtable {
TString **hash;
int nuse; /* number of elements */
int size;
TString **hash;
int nuse; /* number of elements */
int size;
} stringtable;
@ -175,32 +175,32 @@ typedef struct stringtable {
** before the function starts or after it ends.
*/
struct CallInfo {
StkIdRel func; /* function index in the stack */
StkIdRel top; /* top for this function */
struct CallInfo *previous, *next; /* dynamic call link */
union {
struct { /* only for Lua functions */
const Instruction *savedpc;
volatile l_signalT trap; /* function is tracing lines/counts */
int nextraargs; /* # of extra arguments in vararg functions */
} l;
struct { /* only for C functions */
lua_KFunction k; /* continuation in case of yields */
ptrdiff_t old_errfunc;
lua_KContext ctx; /* context info. in case of yields */
} c;
} u;
union {
int funcidx; /* called-function index */
int nyield; /* number of values yielded */
int nres; /* number of values returned */
struct { /* info about transferred values (for call/return hooks) */
unsigned short ftransfer; /* offset of first value transferred */
unsigned short ntransfer; /* number of values transferred */
} transferinfo;
} u2;
short nresults; /* expected number of results from this function */
unsigned short callstatus;
StkIdRel func; /* function index in the stack */
StkIdRel top; /* top for this function */
struct CallInfo *previous, *next; /* dynamic call link */
union {
struct { /* only for Lua functions */
const Instruction *savedpc;
volatile l_signalT trap; /* function is tracing lines/counts */
int nextraargs; /* # of extra arguments in vararg functions */
} l;
struct { /* only for C functions */
lua_KFunction k; /* continuation in case of yields */
ptrdiff_t old_errfunc;
lua_KContext ctx; /* context info. in case of yields */
} c;
} u;
union {
int funcidx; /* called-function index */
int nyield; /* number of values yielded */
int nres; /* number of values returned */
struct { /* info about transferred values (for call/return hooks) */
unsigned short ftransfer; /* offset of first value transferred */
unsigned short ntransfer; /* number of values transferred */
} transferinfo;
} u2;
short nresults; /* expected number of results from this function */
unsigned short callstatus;
};
@ -252,54 +252,54 @@ struct CallInfo {
** 'global state', shared by all threads of this state
*/
typedef struct global_State {
lua_Alloc frealloc; /* function to reallocate memory */
void *ud; /* auxiliary data to 'frealloc' */
l_mem totalbytes; /* number of bytes currently allocated - GCdebt */
l_mem GCdebt; /* bytes allocated not yet compensated by the collector */
lu_mem GCestimate; /* an estimate of the non-garbage memory in use */
lu_mem lastatomic; /* see function 'genstep' in file 'lgc.c' */
stringtable strt; /* hash table for strings */
TValue l_registry;
TValue nilvalue; /* a nil value */
unsigned int seed; /* randomized seed for hashes */
lu_byte currentwhite;
lu_byte gcstate; /* state of garbage collector */
lu_byte gckind; /* kind of GC running */
lu_byte gcstopem; /* stops emergency collections */
lu_byte genminormul; /* control for minor generational collections */
lu_byte genmajormul; /* control for major generational collections */
lu_byte gcstp; /* control whether GC is running */
lu_byte gcemergency; /* true if this is an emergency collection */
lu_byte gcpause; /* size of pause between successive GCs */
lu_byte gcstepmul; /* GC "speed" */
lu_byte gcstepsize; /* (log2 of) GC granularity */
GCObject *allgc; /* list of all collectable objects */
GCObject **sweepgc; /* current position of sweep in list */
GCObject *finobj; /* list of collectable objects with finalizers */
GCObject *gray; /* list of gray objects */
GCObject *grayagain; /* list of objects to be traversed atomically */
GCObject *weak; /* list of tables with weak values */
GCObject *ephemeron; /* list of ephemeron tables (weak keys) */
GCObject *allweak; /* list of all-weak tables */
GCObject *tobefnz; /* list of userdata to be GC */
GCObject *fixedgc; /* list of objects not to be collected */
/* fields for generational collector */
GCObject *survival; /* start of objects that survived one GC cycle */
GCObject *old1; /* start of old1 objects */
GCObject *reallyold; /* objects more than one cycle old ("really old") */
GCObject *firstold1; /* first OLD1 object in the list (if any) */
GCObject *finobjsur; /* list of survival objects with finalizers */
GCObject *finobjold1; /* list of old1 objects with finalizers */
GCObject *finobjrold; /* list of really old objects with finalizers */
struct lua_State *twups; /* list of threads with open upvalues */
lua_CFunction panic; /* to be called in unprotected errors */
struct lua_State *mainthread;
TString *memerrmsg; /* message for memory-allocation errors */
TString *tmname[TM_N]; /* array with tag-method names */
struct Table *mt[LUA_NUMTYPES]; /* metatables for basic types */
TString *strcache[STRCACHE_N][STRCACHE_M]; /* cache for strings in API */
lua_WarnFunction warnf; /* warning function */
void *ud_warn; /* auxiliary data to 'warnf' */
lua_Alloc frealloc; /* function to reallocate memory */
void *ud; /* auxiliary data to 'frealloc' */
l_mem totalbytes; /* number of bytes currently allocated - GCdebt */
l_mem GCdebt; /* bytes allocated not yet compensated by the collector */
lu_mem GCestimate; /* an estimate of the non-garbage memory in use */
lu_mem lastatomic; /* see function 'genstep' in file 'lgc.c' */
stringtable strt; /* hash table for strings */
TValue l_registry;
TValue nilvalue; /* a nil value */
unsigned int seed; /* randomized seed for hashes */
lu_byte currentwhite;
lu_byte gcstate; /* state of garbage collector */
lu_byte gckind; /* kind of GC running */
lu_byte gcstopem; /* stops emergency collections */
lu_byte genminormul; /* control for minor generational collections */
lu_byte genmajormul; /* control for major generational collections */
lu_byte gcstp; /* control whether GC is running */
lu_byte gcemergency; /* true if this is an emergency collection */
lu_byte gcpause; /* size of pause between successive GCs */
lu_byte gcstepmul; /* GC "speed" */
lu_byte gcstepsize; /* (log2 of) GC granularity */
GCObject *allgc; /* list of all collectable objects */
GCObject **sweepgc; /* current position of sweep in list */
GCObject *finobj; /* list of collectable objects with finalizers */
GCObject *gray; /* list of gray objects */
GCObject *grayagain; /* list of objects to be traversed atomically */
GCObject *weak; /* list of tables with weak values */
GCObject *ephemeron; /* list of ephemeron tables (weak keys) */
GCObject *allweak; /* list of all-weak tables */
GCObject *tobefnz; /* list of userdata to be GC */
GCObject *fixedgc; /* list of objects not to be collected */
/* fields for generational collector */
GCObject *survival; /* start of objects that survived one GC cycle */
GCObject *old1; /* start of old1 objects */
GCObject *reallyold; /* objects more than one cycle old ("really old") */
GCObject *firstold1; /* first OLD1 object in the list (if any) */
GCObject *finobjsur; /* list of survival objects with finalizers */
GCObject *finobjold1; /* list of old1 objects with finalizers */
GCObject *finobjrold; /* list of really old objects with finalizers */
struct lua_State *twups; /* list of threads with open upvalues */
lua_CFunction panic; /* to be called in unprotected errors */
struct lua_State *mainthread;
TString *memerrmsg; /* message for memory-allocation errors */
TString *tmname[TM_N]; /* array with tag-method names */
struct Table *mt[LUA_NUMTYPES]; /* metatables for basic types */
TString *strcache[STRCACHE_N][STRCACHE_M]; /* cache for strings in API */
lua_WarnFunction warnf; /* warning function */
void *ud_warn; /* auxiliary data to 'warnf' */
} global_State;
@ -307,28 +307,28 @@ typedef struct global_State {
** 'per thread' state
*/
struct lua_State {
CommonHeader;
lu_byte status;
lu_byte allowhook;
unsigned short nci; /* number of items in 'ci' list */
StkIdRel top; /* first free slot in the stack */
global_State *l_G;
CallInfo *ci; /* call info for current function */
StkIdRel stack_last; /* end of stack (last element + 1) */
StkIdRel stack; /* stack base */
UpVal *openupval; /* list of open upvalues in this stack */
StkIdRel tbclist; /* list of to-be-closed variables */
GCObject *gclist;
struct lua_State *twups; /* list of threads with open upvalues */
struct lua_longjmp *errorJmp; /* current error recover point */
CallInfo base_ci; /* CallInfo for first level (C calling Lua) */
volatile lua_Hook hook;
ptrdiff_t errfunc; /* current error handling function (stack index) */
l_uint32 nCcalls; /* number of nested (non-yieldable | C) calls */
int oldpc; /* last pc traced */
int basehookcount;
int hookcount;
volatile l_signalT hookmask;
CommonHeader;
lu_byte status;
lu_byte allowhook;
unsigned short nci; /* number of items in 'ci' list */
StkIdRel top; /* first free slot in the stack */
global_State *l_G;
CallInfo *ci; /* call info for current function */
StkIdRel stack_last; /* end of stack (last element + 1) */
StkIdRel stack; /* stack base */
UpVal *openupval; /* list of open upvalues in this stack */
StkIdRel tbclist; /* list of to-be-closed variables */
GCObject *gclist;
struct lua_State *twups; /* list of threads with open upvalues */
struct lua_longjmp *errorJmp; /* current error recover point */
CallInfo base_ci; /* CallInfo for first level (C calling Lua) */
volatile lua_Hook hook;
ptrdiff_t errfunc; /* current error handling function (stack index) */
l_uint32 nCcalls; /* number of nested (non-yieldable | C) calls */
int oldpc; /* last pc traced */
int basehookcount;
int hookcount;
volatile l_signalT hookmask;
};
@ -351,14 +351,14 @@ struct lua_State {
** of the union is visible."
*/
union GCUnion {
GCObject gc; /* common header */
struct TString ts;
struct Udata u;
union Closure cl;
struct Table h;
struct Proto p;
struct lua_State th; /* thread */
struct UpVal upv;
GCObject gc; /* common header */
struct TString ts;
struct Udata u;
union Closure cl;
struct Table h;
struct Proto p;
struct lua_State th; /* thread */
struct UpVal upv;
};
@ -393,15 +393,15 @@ union GCUnion {
/* actual number of total bytes allocated */
#define gettotalbytes(g) cast(lu_mem, (g)->totalbytes + (g)->GCdebt)
LUAI_FUNC void luaE_setdebt (global_State *g, l_mem debt);
LUAI_FUNC void luaE_freethread (lua_State *L, lua_State *L1);
LUAI_FUNC CallInfo *luaE_extendCI (lua_State *L);
LUAI_FUNC void luaE_shrinkCI (lua_State *L);
LUAI_FUNC void luaE_checkcstack (lua_State *L);
LUAI_FUNC void luaE_incCstack (lua_State *L);
LUAI_FUNC void luaE_warning (lua_State *L, const char *msg, int tocont);
LUAI_FUNC void luaE_warnerror (lua_State *L, const char *where);
LUAI_FUNC int luaE_resetthread (lua_State *L, int status);
LUAI_FUNC void luaE_setdebt(global_State *g, l_mem debt);
LUAI_FUNC void luaE_freethread(lua_State *L, lua_State *L1);
LUAI_FUNC CallInfo *luaE_extendCI(lua_State *L);
LUAI_FUNC void luaE_shrinkCI(lua_State *L);
LUAI_FUNC void luaE_checkcstack(lua_State *L);
LUAI_FUNC void luaE_incCstack(lua_State *L);
LUAI_FUNC void luaE_warning(lua_State *L, const char *msg, int tocont);
LUAI_FUNC void luaE_warnerror(lua_State *L, const char *where);
LUAI_FUNC int luaE_resetthread(lua_State *L, int status);
#endif

View file

@ -31,49 +31,49 @@
/*
** equality for long strings
*/
int luaS_eqlngstr (TString *a, TString *b) {
size_t len = a->u.lnglen;
lua_assert(a->tt == LUA_VLNGSTR && b->tt == LUA_VLNGSTR);
return (a == b) || /* same instance or... */
((len == b->u.lnglen) && /* equal length and ... */
(memcmp(getlngstr(a), getlngstr(b), len) == 0)); /* equal contents */
int luaS_eqlngstr(TString *a, TString *b) {
size_t len = a->u.lnglen;
lua_assert(a->tt == LUA_VLNGSTR && b->tt == LUA_VLNGSTR);
return (a == b) || /* same instance or... */
((len == b->u.lnglen) && /* equal length and ... */
(memcmp(getlngstr(a), getlngstr(b), len) == 0)); /* equal contents */
}
unsigned int luaS_hash (const char *str, size_t l, unsigned int seed) {
unsigned int h = seed ^ cast_uint(l);
for (; l > 0; l--)
h ^= ((h<<5) + (h>>2) + cast_byte(str[l - 1]));
return h;
unsigned int luaS_hash(const char *str, size_t l, unsigned int seed) {
unsigned int h = seed ^ cast_uint(l);
for (; l > 0; l--)
h ^= ((h << 5) + (h >> 2) + cast_byte(str[l - 1]));
return h;
}
unsigned int luaS_hashlongstr (TString *ts) {
lua_assert(ts->tt == LUA_VLNGSTR);
if (ts->extra == 0) { /* no hash? */
size_t len = ts->u.lnglen;
ts->hash = luaS_hash(getlngstr(ts), len, ts->hash);
ts->extra = 1; /* now it has its hash */
}
return ts->hash;
}
static void tablerehash (TString **vect, int osize, int nsize) {
int i;
for (i = osize; i < nsize; i++) /* clear new elements */
vect[i] = NULL;
for (i = 0; i < osize; i++) { /* rehash old part of the array */
TString *p = vect[i];
vect[i] = NULL;
while (p) { /* for each string in the list */
TString *hnext = p->u.hnext; /* save next */
unsigned int h = lmod(p->hash, nsize); /* new position */
p->u.hnext = vect[h]; /* chain it into array */
vect[h] = p;
p = hnext;
unsigned int luaS_hashlongstr(TString *ts) {
lua_assert(ts->tt == LUA_VLNGSTR);
if (ts->extra == 0) { /* no hash? */
size_t len = ts->u.lnglen;
ts->hash = luaS_hash(getlngstr(ts), len, ts->hash);
ts->extra = 1; /* now it has its hash */
}
return ts->hash;
}
static void tablerehash(TString **vect, int osize, int nsize) {
int i;
for (i = osize; i < nsize; i++) /* clear new elements */
vect[i] = NULL;
for (i = 0; i < osize; i++) { /* rehash old part of the array */
TString *p = vect[i];
vect[i] = NULL;
while (p) { /* for each string in the list */
TString *hnext = p->u.hnext; /* save next */
unsigned int h = lmod(p->hash, nsize); /* new position */
p->u.hnext = vect[h]; /* chain it into array */
vect[h] = p;
p = hnext;
}
}
}
}
@ -82,24 +82,23 @@ static void tablerehash (TString **vect, int osize, int nsize) {
** (This can degrade performance, but any non-zero size should work
** correctly.)
*/
void luaS_resize (lua_State *L, int nsize) {
stringtable *tb = &G(L)->strt;
int osize = tb->size;
TString **newvect;
if (nsize < osize) /* shrinking table? */
tablerehash(tb->hash, osize, nsize); /* depopulate shrinking part */
newvect = luaM_reallocvector(L, tb->hash, osize, nsize, TString*);
if (l_unlikely(newvect == NULL)) { /* reallocation failed? */
if (nsize < osize) /* was it shrinking table? */
tablerehash(tb->hash, nsize, osize); /* restore to original size */
/* leave table as it was */
}
else { /* allocation succeeded */
tb->hash = newvect;
tb->size = nsize;
if (nsize > osize)
tablerehash(newvect, osize, nsize); /* rehash for new size */
}
void luaS_resize(lua_State *L, int nsize) {
stringtable *tb = &G(L)->strt;
int osize = tb->size;
TString **newvect;
if (nsize < osize) /* shrinking table? */
tablerehash(tb->hash, osize, nsize); /* depopulate shrinking part */
newvect = luaM_reallocvector(L, tb->hash, osize, nsize, TString *);
if (l_unlikely(newvect == NULL)) { /* reallocation failed? */
if (nsize < osize) /* was it shrinking table? */
tablerehash(tb->hash, nsize, osize); /* restore to original size */
/* leave table as it was */
} else { /* allocation succeeded */
tb->hash = newvect;
tb->size = nsize;
if (nsize > osize)
tablerehash(newvect, osize, nsize); /* rehash for new size */
}
}
@ -107,32 +106,32 @@ void luaS_resize (lua_State *L, int nsize) {
** Clear API string cache. (Entries cannot be empty, so fill them with
** a non-collectable string.)
*/
void luaS_clearcache (global_State *g) {
int i, j;
for (i = 0; i < STRCACHE_N; i++)
for (j = 0; j < STRCACHE_M; j++) {
if (iswhite(g->strcache[i][j])) /* will entry be collected? */
g->strcache[i][j] = g->memerrmsg; /* replace it with something fixed */
}
void luaS_clearcache(global_State *g) {
int i, j;
for (i = 0; i < STRCACHE_N; i++)
for (j = 0; j < STRCACHE_M; j++) {
if (iswhite(g->strcache[i][j])) /* will entry be collected? */
g->strcache[i][j] = g->memerrmsg; /* replace it with something fixed */
}
}
/*
** Initialize the string table and the string cache
*/
void luaS_init (lua_State *L) {
global_State *g = G(L);
int i, j;
stringtable *tb = &G(L)->strt;
tb->hash = luaM_newvector(L, MINSTRTABSIZE, TString*);
tablerehash(tb->hash, 0, MINSTRTABSIZE); /* clear array */
tb->size = MINSTRTABSIZE;
/* pre-create memory-error message */
g->memerrmsg = luaS_newliteral(L, MEMERRMSG);
luaC_fix(L, obj2gco(g->memerrmsg)); /* it should never be collected */
for (i = 0; i < STRCACHE_N; i++) /* fill cache with valid strings */
for (j = 0; j < STRCACHE_M; j++)
g->strcache[i][j] = g->memerrmsg;
void luaS_init(lua_State *L) {
global_State *g = G(L);
int i, j;
stringtable *tb = &G(L)->strt;
tb->hash = luaM_newvector(L, MINSTRTABSIZE, TString *);
tablerehash(tb->hash, 0, MINSTRTABSIZE); /* clear array */
tb->size = MINSTRTABSIZE;
/* pre-create memory-error message */
g->memerrmsg = luaS_newliteral(L, MEMERRMSG);
luaC_fix(L, obj2gco(g->memerrmsg)); /* it should never be collected */
for (i = 0; i < STRCACHE_N; i++) /* fill cache with valid strings */
for (j = 0; j < STRCACHE_M; j++)
g->strcache[i][j] = g->memerrmsg;
}
@ -140,96 +139,96 @@ void luaS_init (lua_State *L) {
/*
** creates a new string object
*/
static TString *createstrobj (lua_State *L, size_t l, int tag, unsigned int h) {
TString *ts;
GCObject *o;
size_t totalsize; /* total size of TString object */
totalsize = sizelstring(l);
o = luaC_newobj(L, tag, totalsize);
ts = gco2ts(o);
ts->hash = h;
ts->extra = 0;
getstr(ts)[l] = '\0'; /* ending 0 */
return ts;
static TString *createstrobj(lua_State *L, size_t l, int tag, unsigned int h) {
TString *ts;
GCObject *o;
size_t totalsize; /* total size of TString object */
totalsize = sizelstring(l);
o = luaC_newobj(L, tag, totalsize);
ts = gco2ts(o);
ts->hash = h;
ts->extra = 0;
getstr(ts)[l] = '\0'; /* ending 0 */
return ts;
}
TString *luaS_createlngstrobj (lua_State *L, size_t l) {
TString *ts = createstrobj(L, l, LUA_VLNGSTR, G(L)->seed);
ts->u.lnglen = l;
ts->shrlen = 0xFF; /* signals that it is a long string */
return ts;
TString *luaS_createlngstrobj(lua_State *L, size_t l) {
TString *ts = createstrobj(L, l, LUA_VLNGSTR, G(L)->seed);
ts->u.lnglen = l;
ts->shrlen = 0xFF; /* signals that it is a long string */
return ts;
}
void luaS_remove (lua_State *L, TString *ts) {
stringtable *tb = &G(L)->strt;
TString **p = &tb->hash[lmod(ts->hash, tb->size)];
while (*p != ts) /* find previous element */
p = &(*p)->u.hnext;
*p = (*p)->u.hnext; /* remove element from its list */
tb->nuse--;
void luaS_remove(lua_State *L, TString *ts) {
stringtable *tb = &G(L)->strt;
TString **p = &tb->hash[lmod(ts->hash, tb->size)];
while (*p != ts) /* find previous element */
p = &(*p)->u.hnext;
*p = (*p)->u.hnext; /* remove element from its list */
tb->nuse--;
}
static void growstrtab (lua_State *L, stringtable *tb) {
if (l_unlikely(tb->nuse == MAX_INT)) { /* too many strings? */
luaC_fullgc(L, 1); /* try to free some... */
if (tb->nuse == MAX_INT) /* still too many? */
luaM_error(L); /* cannot even create a message... */
}
if (tb->size <= MAXSTRTB / 2) /* can grow string table? */
luaS_resize(L, tb->size * 2);
static void growstrtab(lua_State *L, stringtable *tb) {
if (l_unlikely(tb->nuse == MAX_INT)) { /* too many strings? */
luaC_fullgc(L, 1); /* try to free some... */
if (tb->nuse == MAX_INT) /* still too many? */
luaM_error(L); /* cannot even create a message... */
}
if (tb->size <= MAXSTRTB / 2) /* can grow string table? */
luaS_resize(L, tb->size * 2);
}
/*
** Checks whether short string exists and reuses it or creates a new one.
*/
static TString *internshrstr (lua_State *L, const char *str, size_t l) {
TString *ts;
global_State *g = G(L);
stringtable *tb = &g->strt;
unsigned int h = luaS_hash(str, l, g->seed);
TString **list = &tb->hash[lmod(h, tb->size)];
lua_assert(str != NULL); /* otherwise 'memcmp'/'memcpy' are undefined */
for (ts = *list; ts != NULL; ts = ts->u.hnext) {
if (l == ts->shrlen && (memcmp(str, getshrstr(ts), l * sizeof(char)) == 0)) {
/* found! */
if (isdead(g, ts)) /* dead (but not collected yet)? */
changewhite(ts); /* resurrect it */
return ts;
static TString *internshrstr(lua_State *L, const char *str, size_t l) {
TString *ts;
global_State *g = G(L);
stringtable *tb = &g->strt;
unsigned int h = luaS_hash(str, l, g->seed);
TString **list = &tb->hash[lmod(h, tb->size)];
lua_assert(str != NULL); /* otherwise 'memcmp'/'memcpy' are undefined */
for (ts = *list; ts != NULL; ts = ts->u.hnext) {
if (l == ts->shrlen && (memcmp(str, getshrstr(ts), l * sizeof(char)) == 0)) {
/* found! */
if (isdead(g, ts)) /* dead (but not collected yet)? */
changewhite(ts); /* resurrect it */
return ts;
}
}
}
/* else must create a new string */
if (tb->nuse >= tb->size) { /* need to grow string table? */
growstrtab(L, tb);
list = &tb->hash[lmod(h, tb->size)]; /* rehash with new size */
}
ts = createstrobj(L, l, LUA_VSHRSTR, h);
ts->shrlen = cast_byte(l);
memcpy(getshrstr(ts), str, l * sizeof(char));
ts->u.hnext = *list;
*list = ts;
tb->nuse++;
return ts;
/* else must create a new string */
if (tb->nuse >= tb->size) { /* need to grow string table? */
growstrtab(L, tb);
list = &tb->hash[lmod(h, tb->size)]; /* rehash with new size */
}
ts = createstrobj(L, l, LUA_VSHRSTR, h);
ts->shrlen = cast_byte(l);
memcpy(getshrstr(ts), str, l * sizeof(char));
ts->u.hnext = *list;
*list = ts;
tb->nuse++;
return ts;
}
/*
** new string (with explicit length)
*/
TString *luaS_newlstr (lua_State *L, const char *str, size_t l) {
if (l <= LUAI_MAXSHORTLEN) /* short string? */
return internshrstr(L, str, l);
else {
TString *ts;
if (l_unlikely(l * sizeof(char) >= (MAX_SIZE - sizeof(TString))))
luaM_toobig(L);
ts = luaS_createlngstrobj(L, l);
memcpy(getlngstr(ts), str, l * sizeof(char));
return ts;
}
TString *luaS_newlstr(lua_State *L, const char *str, size_t l) {
if (l <= LUAI_MAXSHORTLEN) /* short string? */
return internshrstr(L, str, l);
else {
TString *ts;
if (l_unlikely(l * sizeof(char) >= (MAX_SIZE - sizeof(TString))))
luaM_toobig(L);
ts = luaS_createlngstrobj(L, l);
memcpy(getlngstr(ts), str, l * sizeof(char));
return ts;
}
}
@ -239,36 +238,36 @@ TString *luaS_newlstr (lua_State *L, const char *str, size_t l) {
** only zero-terminated strings, so it is safe to use 'strcmp' to
** check hits.
*/
TString *luaS_new (lua_State *L, const char *str) {
unsigned int i = point2uint(str) % STRCACHE_N; /* hash */
int j;
TString **p = G(L)->strcache[i];
for (j = 0; j < STRCACHE_M; j++) {
if (strcmp(str, getstr(p[j])) == 0) /* hit? */
return p[j]; /* that is it */
}
/* normal route */
for (j = STRCACHE_M - 1; j > 0; j--)
p[j] = p[j - 1]; /* move out last element */
/* new element is first in the list */
p[0] = luaS_newlstr(L, str, strlen(str));
return p[0];
TString *luaS_new(lua_State *L, const char *str) {
unsigned int i = point2uint(str) % STRCACHE_N; /* hash */
int j;
TString **p = G(L)->strcache[i];
for (j = 0; j < STRCACHE_M; j++) {
if (strcmp(str, getstr(p[j])) == 0) /* hit? */
return p[j]; /* that is it */
}
/* normal route */
for (j = STRCACHE_M - 1; j > 0; j--)
p[j] = p[j - 1]; /* move out last element */
/* new element is first in the list */
p[0] = luaS_newlstr(L, str, strlen(str));
return p[0];
}
Udata *luaS_newudata (lua_State *L, size_t s, int nuvalue) {
Udata *u;
int i;
GCObject *o;
if (l_unlikely(s > MAX_SIZE - udatamemoffset(nuvalue)))
luaM_toobig(L);
o = luaC_newobj(L, LUA_VUSERDATA, sizeudata(nuvalue, s));
u = gco2u(o);
u->len = s;
u->nuvalue = nuvalue;
u->metatable = NULL;
for (i = 0; i < nuvalue; i++)
setnilvalue(&u->uv[i].uv);
return u;
Udata *luaS_newudata(lua_State *L, size_t s, int nuvalue) {
Udata *u;
int i;
GCObject *o;
if (l_unlikely(s > MAX_SIZE - udatamemoffset(nuvalue)))
luaM_toobig(L);
o = luaC_newobj(L, LUA_VUSERDATA, sizeudata(nuvalue, s));
u = gco2u(o);
u->len = s;
u->nuvalue = nuvalue;
u->metatable = NULL;
for (i = 0; i < nuvalue; i++)
setnilvalue(&u->uv[i].uv);
return u;
}

View file

@ -41,17 +41,17 @@
#define eqshrstr(a,b) check_exp((a)->tt == LUA_VSHRSTR, (a) == (b))
LUAI_FUNC unsigned int luaS_hash (const char *str, size_t l, unsigned int seed);
LUAI_FUNC unsigned int luaS_hashlongstr (TString *ts);
LUAI_FUNC int luaS_eqlngstr (TString *a, TString *b);
LUAI_FUNC void luaS_resize (lua_State *L, int newsize);
LUAI_FUNC void luaS_clearcache (global_State *g);
LUAI_FUNC void luaS_init (lua_State *L);
LUAI_FUNC void luaS_remove (lua_State *L, TString *ts);
LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s, int nuvalue);
LUAI_FUNC TString *luaS_newlstr (lua_State *L, const char *str, size_t l);
LUAI_FUNC TString *luaS_new (lua_State *L, const char *str);
LUAI_FUNC TString *luaS_createlngstrobj (lua_State *L, size_t l);
LUAI_FUNC unsigned int luaS_hash(const char *str, size_t l, unsigned int seed);
LUAI_FUNC unsigned int luaS_hashlongstr(TString *ts);
LUAI_FUNC int luaS_eqlngstr(TString *a, TString *b);
LUAI_FUNC void luaS_resize(lua_State *L, int newsize);
LUAI_FUNC void luaS_clearcache(global_State *g);
LUAI_FUNC void luaS_init(lua_State *L);
LUAI_FUNC void luaS_remove(lua_State *L, TString *ts);
LUAI_FUNC Udata *luaS_newudata(lua_State *L, size_t s, int nuvalue);
LUAI_FUNC TString *luaS_newlstr(lua_State *L, const char *str, size_t l);
LUAI_FUNC TString *luaS_new(lua_State *L, const char *str);
LUAI_FUNC TString *luaS_createlngstrobj(lua_State *L, size_t l);
#endif

File diff suppressed because it is too large Load diff

File diff suppressed because it is too large Load diff

View file

@ -35,28 +35,28 @@
#define nodefromval(v) cast(Node *, (v))
LUAI_FUNC const TValue *luaH_getint (Table *t, lua_Integer key);
LUAI_FUNC void luaH_setint (lua_State *L, Table *t, lua_Integer key,
TValue *value);
LUAI_FUNC const TValue *luaH_getshortstr (Table *t, TString *key);
LUAI_FUNC const TValue *luaH_getstr (Table *t, TString *key);
LUAI_FUNC const TValue *luaH_get (Table *t, const TValue *key);
LUAI_FUNC void luaH_set (lua_State *L, Table *t, const TValue *key,
TValue *value);
LUAI_FUNC void luaH_finishset (lua_State *L, Table *t, const TValue *key,
const TValue *slot, TValue *value);
LUAI_FUNC Table *luaH_new (lua_State *L);
LUAI_FUNC void luaH_resize (lua_State *L, Table *t, unsigned int nasize,
unsigned int nhsize);
LUAI_FUNC void luaH_resizearray (lua_State *L, Table *t, unsigned int nasize);
LUAI_FUNC void luaH_free (lua_State *L, Table *t);
LUAI_FUNC int luaH_next (lua_State *L, Table *t, StkId key);
LUAI_FUNC lua_Unsigned luaH_getn (Table *t);
LUAI_FUNC unsigned int luaH_realasize (const Table *t);
LUAI_FUNC const TValue *luaH_getint(Table *t, lua_Integer key);
LUAI_FUNC void luaH_setint(lua_State *L, Table *t, lua_Integer key,
TValue *value);
LUAI_FUNC const TValue *luaH_getshortstr(Table *t, TString *key);
LUAI_FUNC const TValue *luaH_getstr(Table *t, TString *key);
LUAI_FUNC const TValue *luaH_get(Table *t, const TValue *key);
LUAI_FUNC void luaH_set(lua_State *L, Table *t, const TValue *key,
TValue *value);
LUAI_FUNC void luaH_finishset(lua_State *L, Table *t, const TValue *key,
const TValue *slot, TValue *value);
LUAI_FUNC Table *luaH_new(lua_State *L);
LUAI_FUNC void luaH_resize(lua_State *L, Table *t, unsigned int nasize,
unsigned int nhsize);
LUAI_FUNC void luaH_resizearray(lua_State *L, Table *t, unsigned int nasize);
LUAI_FUNC void luaH_free(lua_State *L, Table *t);
LUAI_FUNC int luaH_next(lua_State *L, Table *t, StkId key);
LUAI_FUNC lua_Unsigned luaH_getn(Table *t);
LUAI_FUNC unsigned int luaH_realasize(const Table *t);
#if defined(LUA_DEBUG)
LUAI_FUNC Node *luaH_mainposition (const Table *t, const TValue *key);
LUAI_FUNC Node *luaH_mainposition(const Table *t, const TValue *key);
#endif

View file

@ -33,9 +33,9 @@
#define aux_getn(L,n,w) (checktab(L, n, (w) | TAB_L), luaL_len(L, n))
static int checkfield (lua_State *L, const char *key, int n) {
lua_pushstring(L, key);
return (lua_rawget(L, -n) != LUA_TNIL);
static int checkfield(lua_State *L, const char *key, int n) {
lua_pushstring(L, key);
return (lua_rawget(L, -n) != LUA_TNIL);
}
@ -43,66 +43,65 @@ static int checkfield (lua_State *L, const char *key, int n) {
** Check that 'arg' either is a table or can behave like one (that is,
** has a metatable with the required metamethods)
*/
static void checktab (lua_State *L, int arg, int what) {
if (lua_type(L, arg) != LUA_TTABLE) { /* is it not a table? */
int n = 1; /* number of elements to pop */
if (lua_getmetatable(L, arg) && /* must have metatable */
(!(what & TAB_R) || checkfield(L, "__index", ++n)) &&
(!(what & TAB_W) || checkfield(L, "__newindex", ++n)) &&
(!(what & TAB_L) || checkfield(L, "__len", ++n))) {
lua_pop(L, n); /* pop metatable and tested metamethods */
static void checktab(lua_State *L, int arg, int what) {
if (lua_type(L, arg) != LUA_TTABLE) { /* is it not a table? */
int n = 1; /* number of elements to pop */
if (lua_getmetatable(L, arg) && /* must have metatable */
(!(what & TAB_R) || checkfield(L, "__index", ++n)) &&
(!(what & TAB_W) || checkfield(L, "__newindex", ++n)) &&
(!(what & TAB_L) || checkfield(L, "__len", ++n))) {
lua_pop(L, n); /* pop metatable and tested metamethods */
} else
luaL_checktype(L, arg, LUA_TTABLE); /* force an error */
}
else
luaL_checktype(L, arg, LUA_TTABLE); /* force an error */
}
}
static int tinsert (lua_State *L) {
lua_Integer pos; /* where to insert new element */
lua_Integer e = aux_getn(L, 1, TAB_RW);
e = luaL_intop(+, e, 1); /* first empty element */
switch (lua_gettop(L)) {
case 2: { /* called with only 2 arguments */
pos = e; /* insert new element at the end */
break;
static int tinsert(lua_State *L) {
lua_Integer pos; /* where to insert new element */
lua_Integer e = aux_getn(L, 1, TAB_RW);
e = luaL_intop(+, e, 1); /* first empty element */
switch (lua_gettop(L)) {
case 2: { /* called with only 2 arguments */
pos = e; /* insert new element at the end */
break;
}
case 3: {
lua_Integer i;
pos = luaL_checkinteger(L, 2); /* 2nd argument is the position */
/* check whether 'pos' is in [1, e] */
luaL_argcheck(L, (lua_Unsigned)pos - 1u < (lua_Unsigned)e, 2,
"position out of bounds");
for (i = e; i > pos; i--) { /* move up elements */
lua_geti(L, 1, i - 1);
lua_seti(L, 1, i); /* t[i] = t[i - 1] */
}
break;
}
default: {
return luaL_error(L, "wrong number of arguments to 'insert'");
}
}
case 3: {
lua_Integer i;
pos = luaL_checkinteger(L, 2); /* 2nd argument is the position */
/* check whether 'pos' is in [1, e] */
luaL_argcheck(L, (lua_Unsigned)pos - 1u < (lua_Unsigned)e, 2,
"position out of bounds");
for (i = e; i > pos; i--) { /* move up elements */
lua_geti(L, 1, i - 1);
lua_seti(L, 1, i); /* t[i] = t[i - 1] */
}
break;
}
default: {
return luaL_error(L, "wrong number of arguments to 'insert'");
}
}
lua_seti(L, 1, pos); /* t[pos] = v */
return 0;
lua_seti(L, 1, pos); /* t[pos] = v */
return 0;
}
static int tremove (lua_State *L) {
lua_Integer size = aux_getn(L, 1, TAB_RW);
lua_Integer pos = luaL_optinteger(L, 2, size);
if (pos != size) /* validate 'pos' if given */
/* check whether 'pos' is in [1, size + 1] */
luaL_argcheck(L, (lua_Unsigned)pos - 1u <= (lua_Unsigned)size, 2,
"position out of bounds");
lua_geti(L, 1, pos); /* result = t[pos] */
for ( ; pos < size; pos++) {
lua_geti(L, 1, pos + 1);
lua_seti(L, 1, pos); /* t[pos] = t[pos + 1] */
}
lua_pushnil(L);
lua_seti(L, 1, pos); /* remove entry t[pos] */
return 1;
static int tremove(lua_State *L) {
lua_Integer size = aux_getn(L, 1, TAB_RW);
lua_Integer pos = luaL_optinteger(L, 2, size);
if (pos != size) /* validate 'pos' if given */
/* check whether 'pos' is in [1, size + 1] */
luaL_argcheck(L, (lua_Unsigned)pos - 1u <= (lua_Unsigned)size, 2,
"position out of bounds");
lua_geti(L, 1, pos); /* result = t[pos] */
for (; pos < size; pos++) {
lua_geti(L, 1, pos + 1);
lua_seti(L, 1, pos); /* t[pos] = t[pos + 1] */
}
lua_pushnil(L);
lua_seti(L, 1, pos); /* remove entry t[pos] */
return 1;
}
@ -112,63 +111,62 @@ static int tremove (lua_State *L) {
** "possible" means destination after original range, or smaller
** than origin, or copying to another table.
*/
static int tmove (lua_State *L) {
lua_Integer f = luaL_checkinteger(L, 2);
lua_Integer e = luaL_checkinteger(L, 3);
lua_Integer t = luaL_checkinteger(L, 4);
int tt = !lua_isnoneornil(L, 5) ? 5 : 1; /* destination table */
checktab(L, 1, TAB_R);
checktab(L, tt, TAB_W);
if (e >= f) { /* otherwise, nothing to move */
lua_Integer n, i;
luaL_argcheck(L, f > 0 || e < LUA_MAXINTEGER + f, 3,
"too many elements to move");
n = e - f + 1; /* number of elements to move */
luaL_argcheck(L, t <= LUA_MAXINTEGER - n + 1, 4,
"destination wrap around");
if (t > e || t <= f || (tt != 1 && !lua_compare(L, 1, tt, LUA_OPEQ))) {
for (i = 0; i < n; i++) {
lua_geti(L, 1, f + i);
lua_seti(L, tt, t + i);
}
static int tmove(lua_State *L) {
lua_Integer f = luaL_checkinteger(L, 2);
lua_Integer e = luaL_checkinteger(L, 3);
lua_Integer t = luaL_checkinteger(L, 4);
int tt = !lua_isnoneornil(L, 5) ? 5 : 1; /* destination table */
checktab(L, 1, TAB_R);
checktab(L, tt, TAB_W);
if (e >= f) { /* otherwise, nothing to move */
lua_Integer n, i;
luaL_argcheck(L, f > 0 || e < LUA_MAXINTEGER + f, 3,
"too many elements to move");
n = e - f + 1; /* number of elements to move */
luaL_argcheck(L, t <= LUA_MAXINTEGER - n + 1, 4,
"destination wrap around");
if (t > e || t <= f || (tt != 1 && !lua_compare(L, 1, tt, LUA_OPEQ))) {
for (i = 0; i < n; i++) {
lua_geti(L, 1, f + i);
lua_seti(L, tt, t + i);
}
} else {
for (i = n - 1; i >= 0; i--) {
lua_geti(L, 1, f + i);
lua_seti(L, tt, t + i);
}
}
}
else {
for (i = n - 1; i >= 0; i--) {
lua_geti(L, 1, f + i);
lua_seti(L, tt, t + i);
}
}
}
lua_pushvalue(L, tt); /* return destination table */
return 1;
lua_pushvalue(L, tt); /* return destination table */
return 1;
}
static void addfield (lua_State *L, luaL_Buffer *b, lua_Integer i) {
lua_geti(L, 1, i);
if (l_unlikely(!lua_isstring(L, -1)))
luaL_error(L, "invalid value (%s) at index %I in table for 'concat'",
luaL_typename(L, -1), (LUAI_UACINT)i);
luaL_addvalue(b);
static void addfield(lua_State *L, luaL_Buffer *b, lua_Integer i) {
lua_geti(L, 1, i);
if (l_unlikely(!lua_isstring(L, -1)))
luaL_error(L, "invalid value (%s) at index %I in table for 'concat'",
luaL_typename(L, -1), (LUAI_UACINT)i);
luaL_addvalue(b);
}
static int tconcat (lua_State *L) {
luaL_Buffer b;
lua_Integer last = aux_getn(L, 1, TAB_R);
size_t lsep;
const char *sep = luaL_optlstring(L, 2, "", &lsep);
lua_Integer i = luaL_optinteger(L, 3, 1);
last = luaL_optinteger(L, 4, last);
luaL_buffinit(L, &b);
for (; i < last; i++) {
addfield(L, &b, i);
luaL_addlstring(&b, sep, lsep);
}
if (i == last) /* add last value (if interval was not empty) */
addfield(L, &b, i);
luaL_pushresult(&b);
return 1;
static int tconcat(lua_State *L) {
luaL_Buffer b;
lua_Integer last = aux_getn(L, 1, TAB_R);
size_t lsep;
const char *sep = luaL_optlstring(L, 2, "", &lsep);
lua_Integer i = luaL_optinteger(L, 3, 1);
last = luaL_optinteger(L, 4, last);
luaL_buffinit(L, &b);
for (; i < last; i++) {
addfield(L, &b, i);
luaL_addlstring(&b, sep, lsep);
}
if (i == last) /* add last value (if interval was not empty) */
addfield(L, &b, i);
luaL_pushresult(&b);
return 1;
}
@ -178,33 +176,33 @@ static int tconcat (lua_State *L) {
** =======================================================
*/
static int tpack (lua_State *L) {
int i;
int n = lua_gettop(L); /* number of elements to pack */
lua_createtable(L, n, 1); /* create result table */
lua_insert(L, 1); /* put it at index 1 */
for (i = n; i >= 1; i--) /* assign elements */
lua_seti(L, 1, i);
lua_pushinteger(L, n);
lua_setfield(L, 1, "n"); /* t.n = number of elements */
return 1; /* return table */
static int tpack(lua_State *L) {
int i;
int n = lua_gettop(L); /* number of elements to pack */
lua_createtable(L, n, 1); /* create result table */
lua_insert(L, 1); /* put it at index 1 */
for (i = n; i >= 1; i--) /* assign elements */
lua_seti(L, 1, i);
lua_pushinteger(L, n);
lua_setfield(L, 1, "n"); /* t.n = number of elements */
return 1; /* return table */
}
static int tunpack (lua_State *L) {
lua_Unsigned n;
lua_Integer i = luaL_optinteger(L, 2, 1);
lua_Integer e = luaL_opt(L, luaL_checkinteger, 3, luaL_len(L, 1));
if (i > e) return 0; /* empty range */
n = (lua_Unsigned)e - i; /* number of elements minus 1 (avoid overflows) */
if (l_unlikely(n >= (unsigned int)INT_MAX ||
!lua_checkstack(L, (int)(++n))))
return luaL_error(L, "too many results to unpack");
for (; i < e; i++) { /* push arg[i..e - 1] (to avoid overflows) */
lua_geti(L, 1, i);
}
lua_geti(L, 1, e); /* push last element */
return (int)n;
static int tunpack(lua_State *L) {
lua_Unsigned n;
lua_Integer i = luaL_optinteger(L, 2, 1);
lua_Integer e = luaL_opt(L, luaL_checkinteger, 3, luaL_len(L, 1));
if (i > e) return 0; /* empty range */
n = (lua_Unsigned)e - i; /* number of elements minus 1 (avoid overflows) */
if (l_unlikely(n >= (unsigned int)INT_MAX ||
!lua_checkstack(L, (int)(++n))))
return luaL_error(L, "too many results to unpack");
for (; i < e; i++) { /* push arg[i..e - 1] (to avoid overflows) */
lua_geti(L, 1, i);
}
lua_geti(L, 1, e); /* push last element */
return (int)n;
}
/* }====================================================== */
@ -243,16 +241,16 @@ typedef unsigned int IdxT;
** anything without risking overflows. A safe way to use their values
** is to copy them to an array of a known type and use the array values.
*/
static unsigned int l_randomizePivot (void) {
clock_t c = clock();
time_t t = time(NULL);
unsigned int buff[sof(c) + sof(t)];
unsigned int i, rnd = 0;
memcpy(buff, &c, sof(c) * sizeof(unsigned int));
memcpy(buff + sof(c), &t, sof(t) * sizeof(unsigned int));
for (i = 0; i < sof(buff); i++)
rnd += buff[i];
return rnd;
static unsigned int l_randomizePivot(void) {
clock_t c = clock();
time_t t = time(NULL);
unsigned int buff[sof(c) + sof(t)];
unsigned int i, rnd = 0;
memcpy(buff, &c, sof(c) * sizeof(unsigned int));
memcpy(buff + sof(c), &t, sof(t) * sizeof(unsigned int));
for (i = 0; i < sof(buff); i++)
rnd += buff[i];
return rnd;
}
#endif /* } */
@ -262,9 +260,9 @@ static unsigned int l_randomizePivot (void) {
#define RANLIMIT 100u
static void set2 (lua_State *L, IdxT i, IdxT j) {
lua_seti(L, 1, i);
lua_seti(L, 1, j);
static void set2(lua_State *L, IdxT i, IdxT j) {
lua_seti(L, 1, i);
lua_seti(L, 1, j);
}
@ -272,19 +270,19 @@ static void set2 (lua_State *L, IdxT i, IdxT j) {
** Return true iff value at stack index 'a' is less than the value at
** index 'b' (according to the order of the sort).
*/
static int sort_comp (lua_State *L, int a, int b) {
if (lua_isnil(L, 2)) /* no function? */
return lua_compare(L, a, b, LUA_OPLT); /* a < b */
else { /* function */
int res;
lua_pushvalue(L, 2); /* push function */
lua_pushvalue(L, a-1); /* -1 to compensate function */
lua_pushvalue(L, b-2); /* -2 to compensate function and 'a' */
lua_call(L, 2, 1); /* call function */
res = lua_toboolean(L, -1); /* get result */
lua_pop(L, 1); /* pop result */
return res;
}
static int sort_comp(lua_State *L, int a, int b) {
if (lua_isnil(L, 2)) /* no function? */
return lua_compare(L, a, b, LUA_OPLT); /* a < b */
else { /* function */
int res;
lua_pushvalue(L, 2); /* push function */
lua_pushvalue(L, a - 1); /* -1 to compensate function */
lua_pushvalue(L, b - 2); /* -2 to compensate function and 'a' */
lua_call(L, 2, 1); /* call function */
res = lua_toboolean(L, -1); /* get result */
lua_pop(L, 1); /* pop result */
return res;
}
}
@ -295,35 +293,35 @@ static int sort_comp (lua_State *L, int a, int b) {
** Pos-condition: a[lo .. i - 1] <= a[i] == P <= a[i + 1 .. up]
** returns 'i'.
*/
static IdxT partition (lua_State *L, IdxT lo, IdxT up) {
IdxT i = lo; /* will be incremented before first use */
IdxT j = up - 1; /* will be decremented before first use */
/* loop invariant: a[lo .. i] <= P <= a[j .. up] */
for (;;) {
/* next loop: repeat ++i while a[i] < P */
while ((void)lua_geti(L, 1, ++i), sort_comp(L, -1, -2)) {
if (l_unlikely(i == up - 1)) /* a[i] < P but a[up - 1] == P ?? */
luaL_error(L, "invalid order function for sorting");
lua_pop(L, 1); /* remove a[i] */
static IdxT partition(lua_State *L, IdxT lo, IdxT up) {
IdxT i = lo; /* will be incremented before first use */
IdxT j = up - 1; /* will be decremented before first use */
/* loop invariant: a[lo .. i] <= P <= a[j .. up] */
for (;;) {
/* next loop: repeat ++i while a[i] < P */
while ((void)lua_geti(L, 1, ++i), sort_comp(L, -1, -2)) {
if (l_unlikely(i == up - 1)) /* a[i] < P but a[up - 1] == P ?? */
luaL_error(L, "invalid order function for sorting");
lua_pop(L, 1); /* remove a[i] */
}
/* after the loop, a[i] >= P and a[lo .. i - 1] < P */
/* next loop: repeat --j while P < a[j] */
while ((void)lua_geti(L, 1, --j), sort_comp(L, -3, -1)) {
if (l_unlikely(j < i)) /* j < i but a[j] > P ?? */
luaL_error(L, "invalid order function for sorting");
lua_pop(L, 1); /* remove a[j] */
}
/* after the loop, a[j] <= P and a[j + 1 .. up] >= P */
if (j < i) { /* no elements out of place? */
/* a[lo .. i - 1] <= P <= a[j + 1 .. i .. up] */
lua_pop(L, 1); /* pop a[j] */
/* swap pivot (a[up - 1]) with a[i] to satisfy pos-condition */
set2(L, up - 1, i);
return i;
}
/* otherwise, swap a[i] - a[j] to restore invariant and repeat */
set2(L, i, j);
}
/* after the loop, a[i] >= P and a[lo .. i - 1] < P */
/* next loop: repeat --j while P < a[j] */
while ((void)lua_geti(L, 1, --j), sort_comp(L, -3, -1)) {
if (l_unlikely(j < i)) /* j < i but a[j] > P ?? */
luaL_error(L, "invalid order function for sorting");
lua_pop(L, 1); /* remove a[j] */
}
/* after the loop, a[j] <= P and a[j + 1 .. up] >= P */
if (j < i) { /* no elements out of place? */
/* a[lo .. i - 1] <= P <= a[j + 1 .. i .. up] */
lua_pop(L, 1); /* pop a[j] */
/* swap pivot (a[up - 1]) with a[i] to satisfy pos-condition */
set2(L, up - 1, i);
return i;
}
/* otherwise, swap a[i] - a[j] to restore invariant and repeat */
set2(L, i, j);
}
}
@ -331,100 +329,99 @@ static IdxT partition (lua_State *L, IdxT lo, IdxT up) {
** Choose an element in the middle (2nd-3th quarters) of [lo,up]
** "randomized" by 'rnd'
*/
static IdxT choosePivot (IdxT lo, IdxT up, unsigned int rnd) {
IdxT r4 = (up - lo) / 4; /* range/4 */
IdxT p = rnd % (r4 * 2) + (lo + r4);
lua_assert(lo + r4 <= p && p <= up - r4);
return p;
static IdxT choosePivot(IdxT lo, IdxT up, unsigned int rnd) {
IdxT r4 = (up - lo) / 4; /* range/4 */
IdxT p = rnd % (r4 * 2) + (lo + r4);
lua_assert(lo + r4 <= p && p <= up - r4);
return p;
}
/*
** Quicksort algorithm (recursive function)
*/
static void auxsort (lua_State *L, IdxT lo, IdxT up,
unsigned int rnd) {
while (lo < up) { /* loop for tail recursion */
IdxT p; /* Pivot index */
IdxT n; /* to be used later */
/* sort elements 'lo', 'p', and 'up' */
lua_geti(L, 1, lo);
lua_geti(L, 1, up);
if (sort_comp(L, -1, -2)) /* a[up] < a[lo]? */
set2(L, lo, up); /* swap a[lo] - a[up] */
else
lua_pop(L, 2); /* remove both values */
if (up - lo == 1) /* only 2 elements? */
return; /* already sorted */
if (up - lo < RANLIMIT || rnd == 0) /* small interval or no randomize? */
p = (lo + up)/2; /* middle element is a good pivot */
else /* for larger intervals, it is worth a random pivot */
p = choosePivot(lo, up, rnd);
lua_geti(L, 1, p);
lua_geti(L, 1, lo);
if (sort_comp(L, -2, -1)) /* a[p] < a[lo]? */
set2(L, p, lo); /* swap a[p] - a[lo] */
else {
lua_pop(L, 1); /* remove a[lo] */
lua_geti(L, 1, up);
if (sort_comp(L, -1, -2)) /* a[up] < a[p]? */
set2(L, p, up); /* swap a[up] - a[p] */
else
lua_pop(L, 2);
}
if (up - lo == 2) /* only 3 elements? */
return; /* already sorted */
lua_geti(L, 1, p); /* get middle element (Pivot) */
lua_pushvalue(L, -1); /* push Pivot */
lua_geti(L, 1, up - 1); /* push a[up - 1] */
set2(L, p, up - 1); /* swap Pivot (a[p]) with a[up - 1] */
p = partition(L, lo, up);
/* a[lo .. p - 1] <= a[p] == P <= a[p + 1 .. up] */
if (p - lo < up - p) { /* lower interval is smaller? */
auxsort(L, lo, p - 1, rnd); /* call recursively for lower interval */
n = p - lo; /* size of smaller interval */
lo = p + 1; /* tail call for [p + 1 .. up] (upper interval) */
}
else {
auxsort(L, p + 1, up, rnd); /* call recursively for upper interval */
n = up - p; /* size of smaller interval */
up = p - 1; /* tail call for [lo .. p - 1] (lower interval) */
}
if ((up - lo) / 128 > n) /* partition too imbalanced? */
rnd = l_randomizePivot(); /* try a new randomization */
} /* tail call auxsort(L, lo, up, rnd) */
static void auxsort(lua_State *L, IdxT lo, IdxT up,
unsigned int rnd) {
while (lo < up) { /* loop for tail recursion */
IdxT p; /* Pivot index */
IdxT n; /* to be used later */
/* sort elements 'lo', 'p', and 'up' */
lua_geti(L, 1, lo);
lua_geti(L, 1, up);
if (sort_comp(L, -1, -2)) /* a[up] < a[lo]? */
set2(L, lo, up); /* swap a[lo] - a[up] */
else
lua_pop(L, 2); /* remove both values */
if (up - lo == 1) /* only 2 elements? */
return; /* already sorted */
if (up - lo < RANLIMIT || rnd == 0) /* small interval or no randomize? */
p = (lo + up) / 2; /* middle element is a good pivot */
else /* for larger intervals, it is worth a random pivot */
p = choosePivot(lo, up, rnd);
lua_geti(L, 1, p);
lua_geti(L, 1, lo);
if (sort_comp(L, -2, -1)) /* a[p] < a[lo]? */
set2(L, p, lo); /* swap a[p] - a[lo] */
else {
lua_pop(L, 1); /* remove a[lo] */
lua_geti(L, 1, up);
if (sort_comp(L, -1, -2)) /* a[up] < a[p]? */
set2(L, p, up); /* swap a[up] - a[p] */
else
lua_pop(L, 2);
}
if (up - lo == 2) /* only 3 elements? */
return; /* already sorted */
lua_geti(L, 1, p); /* get middle element (Pivot) */
lua_pushvalue(L, -1); /* push Pivot */
lua_geti(L, 1, up - 1); /* push a[up - 1] */
set2(L, p, up - 1); /* swap Pivot (a[p]) with a[up - 1] */
p = partition(L, lo, up);
/* a[lo .. p - 1] <= a[p] == P <= a[p + 1 .. up] */
if (p - lo < up - p) { /* lower interval is smaller? */
auxsort(L, lo, p - 1, rnd); /* call recursively for lower interval */
n = p - lo; /* size of smaller interval */
lo = p + 1; /* tail call for [p + 1 .. up] (upper interval) */
} else {
auxsort(L, p + 1, up, rnd); /* call recursively for upper interval */
n = up - p; /* size of smaller interval */
up = p - 1; /* tail call for [lo .. p - 1] (lower interval) */
}
if ((up - lo) / 128 > n) /* partition too imbalanced? */
rnd = l_randomizePivot(); /* try a new randomization */
} /* tail call auxsort(L, lo, up, rnd) */
}
static int sort (lua_State *L) {
lua_Integer n = aux_getn(L, 1, TAB_RW);
if (n > 1) { /* non-trivial interval? */
luaL_argcheck(L, n < INT_MAX, 1, "array too big");
if (!lua_isnoneornil(L, 2)) /* is there a 2nd argument? */
luaL_checktype(L, 2, LUA_TFUNCTION); /* must be a function */
lua_settop(L, 2); /* make sure there are two arguments */
auxsort(L, 1, (IdxT)n, 0);
}
return 0;
static int sort(lua_State *L) {
lua_Integer n = aux_getn(L, 1, TAB_RW);
if (n > 1) { /* non-trivial interval? */
luaL_argcheck(L, n < INT_MAX, 1, "array too big");
if (!lua_isnoneornil(L, 2)) /* is there a 2nd argument? */
luaL_checktype(L, 2, LUA_TFUNCTION); /* must be a function */
lua_settop(L, 2); /* make sure there are two arguments */
auxsort(L, 1, (IdxT)n, 0);
}
return 0;
}
/* }====================================================== */
static const luaL_Reg tab_funcs[] = {
{"concat", tconcat},
{"insert", tinsert},
{"pack", tpack},
{"unpack", tunpack},
{"remove", tremove},
{"move", tmove},
{"sort", sort},
{NULL, NULL}
{"concat", tconcat},
{"insert", tinsert},
{"pack", tpack},
{"unpack", tunpack},
{"remove", tremove},
{"move", tmove},
{"sort", sort},
{NULL, NULL}
};
LUAMOD_API int luaopen_table (lua_State *L) {
luaL_newlib(L, tab_funcs);
return 1;
LUAMOD_API int luaopen_table(lua_State *L) {
luaL_newlib(L, tab_funcs);
return 1;
}

View file

@ -28,28 +28,28 @@
static const char udatatypename[] = "userdata";
LUAI_DDEF const char *const luaT_typenames_[LUA_TOTALTYPES] = {
"no value",
"nil", "boolean", udatatypename, "number",
"string", "table", "function", udatatypename, "thread",
"upvalue", "proto" /* these last cases are used for tests only */
"no value",
"nil", "boolean", udatatypename, "number",
"string", "table", "function", udatatypename, "thread",
"upvalue", "proto" /* these last cases are used for tests only */
};
void luaT_init (lua_State *L) {
static const char *const luaT_eventname[] = { /* ORDER TM */
"__index", "__newindex",
"__gc", "__mode", "__len", "__eq",
"__add", "__sub", "__mul", "__mod", "__pow",
"__div", "__idiv",
"__band", "__bor", "__bxor", "__shl", "__shr",
"__unm", "__bnot", "__lt", "__le",
"__concat", "__call", "__close"
};
int i;
for (i=0; i<TM_N; i++) {
G(L)->tmname[i] = luaS_new(L, luaT_eventname[i]);
luaC_fix(L, obj2gco(G(L)->tmname[i])); /* never collect these names */
}
void luaT_init(lua_State *L) {
static const char *const luaT_eventname[] = { /* ORDER TM */
"__index", "__newindex",
"__gc", "__mode", "__len", "__eq",
"__add", "__sub", "__mul", "__mod", "__pow",
"__div", "__idiv",
"__band", "__bor", "__bxor", "__shl", "__shr",
"__unm", "__bnot", "__lt", "__le",
"__concat", "__call", "__close"
};
int i;
for (i = 0; i < TM_N; i++) {
G(L)->tmname[i] = luaS_new(L, luaT_eventname[i]);
luaC_fix(L, obj2gco(G(L)->tmname[i])); /* never collect these names */
}
}
@ -57,30 +57,29 @@ void luaT_init (lua_State *L) {
** function to be used with macro "fasttm": optimized for absence of
** tag methods
*/
const TValue *luaT_gettm (Table *events, TMS event, TString *ename) {
const TValue *tm = luaH_getshortstr(events, ename);
lua_assert(event <= TM_EQ);
if (notm(tm)) { /* no tag method? */
events->flags |= cast_byte(1u<<event); /* cache this fact */
return NULL;
}
else return tm;
const TValue *luaT_gettm(Table *events, TMS event, TString *ename) {
const TValue *tm = luaH_getshortstr(events, ename);
lua_assert(event <= TM_EQ);
if (notm(tm)) { /* no tag method? */
events->flags |= cast_byte(1u << event); /* cache this fact */
return NULL;
} else return tm;
}
const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, TMS event) {
Table *mt;
switch (ttype(o)) {
case LUA_TTABLE:
mt = hvalue(o)->metatable;
break;
case LUA_TUSERDATA:
mt = uvalue(o)->metatable;
break;
default:
mt = G(L)->mt[ttype(o)];
}
return (mt ? luaH_getshortstr(mt, G(L)->tmname[event]) : &G(L)->nilvalue);
const TValue *luaT_gettmbyobj(lua_State *L, const TValue *o, TMS event) {
Table *mt;
switch (ttype(o)) {
case LUA_TTABLE:
mt = hvalue(o)->metatable;
break;
case LUA_TUSERDATA:
mt = uvalue(o)->metatable;
break;
default:
mt = G(L)->mt[ttype(o)];
}
return (mt ? luaH_getshortstr(mt, G(L)->tmname[event]) : &G(L)->nilvalue);
}
@ -88,104 +87,108 @@ const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, TMS event) {
** Return the name of the type of an object. For tables and userdata
** with metatable, use their '__name' metafield, if present.
*/
const char *luaT_objtypename (lua_State *L, const TValue *o) {
Table *mt;
if ((ttistable(o) && (mt = hvalue(o)->metatable) != NULL) ||
(ttisfulluserdata(o) && (mt = uvalue(o)->metatable) != NULL)) {
const TValue *name = luaH_getshortstr(mt, luaS_new(L, "__name"));
if (ttisstring(name)) /* is '__name' a string? */
return getstr(tsvalue(name)); /* use it as type name */
}
return ttypename(ttype(o)); /* else use standard type name */
}
void luaT_callTM (lua_State *L, const TValue *f, const TValue *p1,
const TValue *p2, const TValue *p3) {
StkId func = L->top.p;
setobj2s(L, func, f); /* push function (assume EXTRA_STACK) */
setobj2s(L, func + 1, p1); /* 1st argument */
setobj2s(L, func + 2, p2); /* 2nd argument */
setobj2s(L, func + 3, p3); /* 3rd argument */
L->top.p = func + 4;
/* metamethod may yield only when called from Lua code */
if (isLuacode(L->ci))
luaD_call(L, func, 0);
else
luaD_callnoyield(L, func, 0);
}
void luaT_callTMres (lua_State *L, const TValue *f, const TValue *p1,
const TValue *p2, StkId res) {
ptrdiff_t result = savestack(L, res);
StkId func = L->top.p;
setobj2s(L, func, f); /* push function (assume EXTRA_STACK) */
setobj2s(L, func + 1, p1); /* 1st argument */
setobj2s(L, func + 2, p2); /* 2nd argument */
L->top.p += 3;
/* metamethod may yield only when called from Lua code */
if (isLuacode(L->ci))
luaD_call(L, func, 1);
else
luaD_callnoyield(L, func, 1);
res = restorestack(L, result);
setobjs2s(L, res, --L->top.p); /* move result to its place */
}
static int callbinTM (lua_State *L, const TValue *p1, const TValue *p2,
StkId res, TMS event) {
const TValue *tm = luaT_gettmbyobj(L, p1, event); /* try first operand */
if (notm(tm))
tm = luaT_gettmbyobj(L, p2, event); /* try second operand */
if (notm(tm)) return 0;
luaT_callTMres(L, tm, p1, p2, res);
return 1;
}
void luaT_trybinTM (lua_State *L, const TValue *p1, const TValue *p2,
StkId res, TMS event) {
if (l_unlikely(!callbinTM(L, p1, p2, res, event))) {
switch (event) {
case TM_BAND: case TM_BOR: case TM_BXOR:
case TM_SHL: case TM_SHR: case TM_BNOT: {
if (ttisnumber(p1) && ttisnumber(p2))
luaG_tointerror(L, p1, p2);
else
luaG_opinterror(L, p1, p2, "perform bitwise operation on");
}
/* calls never return, but to avoid warnings: *//* FALLTHROUGH */
default:
luaG_opinterror(L, p1, p2, "perform arithmetic on");
const char *luaT_objtypename(lua_State *L, const TValue *o) {
Table *mt;
if ((ttistable(o) && (mt = hvalue(o)->metatable) != NULL) ||
(ttisfulluserdata(o) && (mt = uvalue(o)->metatable) != NULL)) {
const TValue *name = luaH_getshortstr(mt, luaS_new(L, "__name"));
if (ttisstring(name)) /* is '__name' a string? */
return getstr(tsvalue(name)); /* use it as type name */
}
}
return ttypename(ttype(o)); /* else use standard type name */
}
void luaT_tryconcatTM (lua_State *L) {
StkId top = L->top.p;
if (l_unlikely(!callbinTM(L, s2v(top - 2), s2v(top - 1), top - 2,
TM_CONCAT)))
luaG_concaterror(L, s2v(top - 2), s2v(top - 1));
void luaT_callTM(lua_State *L, const TValue *f, const TValue *p1,
const TValue *p2, const TValue *p3) {
StkId func = L->top.p;
setobj2s(L, func, f); /* push function (assume EXTRA_STACK) */
setobj2s(L, func + 1, p1); /* 1st argument */
setobj2s(L, func + 2, p2); /* 2nd argument */
setobj2s(L, func + 3, p3); /* 3rd argument */
L->top.p = func + 4;
/* metamethod may yield only when called from Lua code */
if (isLuacode(L->ci))
luaD_call(L, func, 0);
else
luaD_callnoyield(L, func, 0);
}
void luaT_trybinassocTM (lua_State *L, const TValue *p1, const TValue *p2,
int flip, StkId res, TMS event) {
if (flip)
luaT_trybinTM(L, p2, p1, res, event);
else
luaT_trybinTM(L, p1, p2, res, event);
void luaT_callTMres(lua_State *L, const TValue *f, const TValue *p1,
const TValue *p2, StkId res) {
ptrdiff_t result = savestack(L, res);
StkId func = L->top.p;
setobj2s(L, func, f); /* push function (assume EXTRA_STACK) */
setobj2s(L, func + 1, p1); /* 1st argument */
setobj2s(L, func + 2, p2); /* 2nd argument */
L->top.p += 3;
/* metamethod may yield only when called from Lua code */
if (isLuacode(L->ci))
luaD_call(L, func, 1);
else
luaD_callnoyield(L, func, 1);
res = restorestack(L, result);
setobjs2s(L, res, --L->top.p); /* move result to its place */
}
void luaT_trybiniTM (lua_State *L, const TValue *p1, lua_Integer i2,
int flip, StkId res, TMS event) {
TValue aux;
setivalue(&aux, i2);
luaT_trybinassocTM(L, p1, &aux, flip, res, event);
static int callbinTM(lua_State *L, const TValue *p1, const TValue *p2,
StkId res, TMS event) {
const TValue *tm = luaT_gettmbyobj(L, p1, event); /* try first operand */
if (notm(tm))
tm = luaT_gettmbyobj(L, p2, event); /* try second operand */
if (notm(tm)) return 0;
luaT_callTMres(L, tm, p1, p2, res);
return 1;
}
void luaT_trybinTM(lua_State *L, const TValue *p1, const TValue *p2,
StkId res, TMS event) {
if (l_unlikely(!callbinTM(L, p1, p2, res, event))) {
switch (event) {
case TM_BAND:
case TM_BOR:
case TM_BXOR:
case TM_SHL:
case TM_SHR:
case TM_BNOT: {
if (ttisnumber(p1) && ttisnumber(p2))
luaG_tointerror(L, p1, p2);
else
luaG_opinterror(L, p1, p2, "perform bitwise operation on");
}
/* calls never return, but to avoid warnings: *//* FALLTHROUGH */
default:
luaG_opinterror(L, p1, p2, "perform arithmetic on");
}
}
}
void luaT_tryconcatTM(lua_State *L) {
StkId top = L->top.p;
if (l_unlikely(!callbinTM(L, s2v(top - 2), s2v(top - 1), top - 2,
TM_CONCAT)))
luaG_concaterror(L, s2v(top - 2), s2v(top - 1));
}
void luaT_trybinassocTM(lua_State *L, const TValue *p1, const TValue *p2,
int flip, StkId res, TMS event) {
if (flip)
luaT_trybinTM(L, p2, p1, res, event);
else
luaT_trybinTM(L, p1, p2, res, event);
}
void luaT_trybiniTM(lua_State *L, const TValue *p1, lua_Integer i2,
int flip, StkId res, TMS event) {
TValue aux;
setivalue(&aux, i2);
luaT_trybinassocTM(L, p1, &aux, flip, res, event);
}
@ -198,74 +201,74 @@ void luaT_trybiniTM (lua_State *L, const TValue *p1, lua_Integer i2,
** the result of r<l); bit CIST_LEQ in the call status keeps that
** information.
*/
int luaT_callorderTM (lua_State *L, const TValue *p1, const TValue *p2,
TMS event) {
if (callbinTM(L, p1, p2, L->top.p, event)) /* try original event */
return !l_isfalse(s2v(L->top.p));
int luaT_callorderTM(lua_State *L, const TValue *p1, const TValue *p2,
TMS event) {
if (callbinTM(L, p1, p2, L->top.p, event)) /* try original event */
return !l_isfalse(s2v(L->top.p));
#if defined(LUA_COMPAT_LT_LE)
else if (event == TM_LE) {
/* try '!(p2 < p1)' for '(p1 <= p2)' */
L->ci->callstatus |= CIST_LEQ; /* mark it is doing 'lt' for 'le' */
if (callbinTM(L, p2, p1, L->top.p, TM_LT)) {
L->ci->callstatus ^= CIST_LEQ; /* clear mark */
return l_isfalse(s2v(L->top.p));
}
/* else error will remove this 'ci'; no need to clear mark */
}
else if (event == TM_LE) {
/* try '!(p2 < p1)' for '(p1 <= p2)' */
L->ci->callstatus |= CIST_LEQ; /* mark it is doing 'lt' for 'le' */
if (callbinTM(L, p2, p1, L->top.p, TM_LT)) {
L->ci->callstatus ^= CIST_LEQ; /* clear mark */
return l_isfalse(s2v(L->top.p));
}
/* else error will remove this 'ci'; no need to clear mark */
}
#endif
luaG_ordererror(L, p1, p2); /* no metamethod found */
return 0; /* to avoid warnings */
luaG_ordererror(L, p1, p2); /* no metamethod found */
return 0; /* to avoid warnings */
}
int luaT_callorderiTM (lua_State *L, const TValue *p1, int v2,
int flip, int isfloat, TMS event) {
TValue aux; const TValue *p2;
if (isfloat) {
setfltvalue(&aux, cast_num(v2));
}
else
setivalue(&aux, v2);
if (flip) { /* arguments were exchanged? */
p2 = p1; p1 = &aux; /* correct them */
}
else
p2 = &aux;
return luaT_callorderTM(L, p1, p2, event);
int luaT_callorderiTM(lua_State *L, const TValue *p1, int v2,
int flip, int isfloat, TMS event) {
TValue aux;
const TValue *p2;
if (isfloat) {
setfltvalue(&aux, cast_num(v2));
} else
setivalue(&aux, v2);
if (flip) { /* arguments were exchanged? */
p2 = p1;
p1 = &aux; /* correct them */
} else
p2 = &aux;
return luaT_callorderTM(L, p1, p2, event);
}
void luaT_adjustvarargs (lua_State *L, int nfixparams, CallInfo *ci,
const Proto *p) {
int i;
int actual = cast_int(L->top.p - ci->func.p) - 1; /* number of arguments */
int nextra = actual - nfixparams; /* number of extra arguments */
ci->u.l.nextraargs = nextra;
luaD_checkstack(L, p->maxstacksize + 1);
/* copy function to the top of the stack */
setobjs2s(L, L->top.p++, ci->func.p);
/* move fixed parameters to the top of the stack */
for (i = 1; i <= nfixparams; i++) {
setobjs2s(L, L->top.p++, ci->func.p + i);
setnilvalue(s2v(ci->func.p + i)); /* erase original parameter (for GC) */
}
ci->func.p += actual + 1;
ci->top.p += actual + 1;
lua_assert(L->top.p <= ci->top.p && ci->top.p <= L->stack_last.p);
void luaT_adjustvarargs(lua_State *L, int nfixparams, CallInfo *ci,
const Proto *p) {
int i;
int actual = cast_int(L->top.p - ci->func.p) - 1; /* number of arguments */
int nextra = actual - nfixparams; /* number of extra arguments */
ci->u.l.nextraargs = nextra;
luaD_checkstack(L, p->maxstacksize + 1);
/* copy function to the top of the stack */
setobjs2s(L, L->top.p++, ci->func.p);
/* move fixed parameters to the top of the stack */
for (i = 1; i <= nfixparams; i++) {
setobjs2s(L, L->top.p++, ci->func.p + i);
setnilvalue(s2v(ci->func.p + i)); /* erase original parameter (for GC) */
}
ci->func.p += actual + 1;
ci->top.p += actual + 1;
lua_assert(L->top.p <= ci->top.p && ci->top.p <= L->stack_last.p);
}
void luaT_getvarargs (lua_State *L, CallInfo *ci, StkId where, int wanted) {
int i;
int nextra = ci->u.l.nextraargs;
if (wanted < 0) {
wanted = nextra; /* get all extra arguments available */
checkstackGCp(L, nextra, where); /* ensure stack space */
L->top.p = where + nextra; /* next instruction will need top */
}
for (i = 0; i < wanted && i < nextra; i++)
setobjs2s(L, where + i, ci->func.p - nextra + i);
for (; i < wanted; i++) /* complete required results with nil */
setnilvalue(s2v(where + i));
void luaT_getvarargs(lua_State *L, CallInfo *ci, StkId where, int wanted) {
int i;
int nextra = ci->u.l.nextraargs;
if (wanted < 0) {
wanted = nextra; /* get all extra arguments available */
checkstackGCp(L, nextra, where); /* ensure stack space */
L->top.p = where + nextra; /* next instruction will need top */
}
for (i = 0; i < wanted && i < nextra; i++)
setobjs2s(L, where + i, ci->func.p - nextra + i);
for (; i < wanted; i++) /* complete required results with nil */
setnilvalue(s2v(where + i));
}

View file

@ -16,32 +16,32 @@
* grep "ORDER TM" and "ORDER OP"
*/
typedef enum {
TM_INDEX,
TM_NEWINDEX,
TM_GC,
TM_MODE,
TM_LEN,
TM_EQ, /* last tag method with fast access */
TM_ADD,
TM_SUB,
TM_MUL,
TM_MOD,
TM_POW,
TM_DIV,
TM_IDIV,
TM_BAND,
TM_BOR,
TM_BXOR,
TM_SHL,
TM_SHR,
TM_UNM,
TM_BNOT,
TM_LT,
TM_LE,
TM_CONCAT,
TM_CALL,
TM_CLOSE,
TM_N /* number of elements in the enum */
TM_INDEX,
TM_NEWINDEX,
TM_GC,
TM_MODE,
TM_LEN,
TM_EQ, /* last tag method with fast access */
TM_ADD,
TM_SUB,
TM_MUL,
TM_MOD,
TM_POW,
TM_DIV,
TM_IDIV,
TM_BAND,
TM_BOR,
TM_BXOR,
TM_SHL,
TM_SHR,
TM_UNM,
TM_BNOT,
TM_LT,
TM_LE,
TM_CONCAT,
TM_CALL,
TM_CLOSE,
TM_N /* number of elements in the enum */
} TMS;
@ -71,33 +71,33 @@ typedef enum {
LUAI_DDEC(const char *const luaT_typenames_[LUA_TOTALTYPES];)
LUAI_FUNC const char *luaT_objtypename (lua_State *L, const TValue *o);
LUAI_FUNC const char *luaT_objtypename(lua_State *L, const TValue *o);
LUAI_FUNC const TValue *luaT_gettm (Table *events, TMS event, TString *ename);
LUAI_FUNC const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o,
TMS event);
LUAI_FUNC void luaT_init (lua_State *L);
LUAI_FUNC const TValue *luaT_gettm(Table *events, TMS event, TString *ename);
LUAI_FUNC const TValue *luaT_gettmbyobj(lua_State *L, const TValue *o,
TMS event);
LUAI_FUNC void luaT_init(lua_State *L);
LUAI_FUNC void luaT_callTM (lua_State *L, const TValue *f, const TValue *p1,
const TValue *p2, const TValue *p3);
LUAI_FUNC void luaT_callTMres (lua_State *L, const TValue *f,
const TValue *p1, const TValue *p2, StkId p3);
LUAI_FUNC void luaT_trybinTM (lua_State *L, const TValue *p1, const TValue *p2,
StkId res, TMS event);
LUAI_FUNC void luaT_tryconcatTM (lua_State *L);
LUAI_FUNC void luaT_trybinassocTM (lua_State *L, const TValue *p1,
const TValue *p2, int inv, StkId res, TMS event);
LUAI_FUNC void luaT_trybiniTM (lua_State *L, const TValue *p1, lua_Integer i2,
int inv, StkId res, TMS event);
LUAI_FUNC int luaT_callorderTM (lua_State *L, const TValue *p1,
const TValue *p2, TMS event);
LUAI_FUNC int luaT_callorderiTM (lua_State *L, const TValue *p1, int v2,
int inv, int isfloat, TMS event);
LUAI_FUNC void luaT_callTM(lua_State *L, const TValue *f, const TValue *p1,
const TValue *p2, const TValue *p3);
LUAI_FUNC void luaT_callTMres(lua_State *L, const TValue *f,
const TValue *p1, const TValue *p2, StkId p3);
LUAI_FUNC void luaT_trybinTM(lua_State *L, const TValue *p1, const TValue *p2,
StkId res, TMS event);
LUAI_FUNC void luaT_tryconcatTM(lua_State *L);
LUAI_FUNC void luaT_trybinassocTM(lua_State *L, const TValue *p1,
const TValue *p2, int inv, StkId res, TMS event);
LUAI_FUNC void luaT_trybiniTM(lua_State *L, const TValue *p1, lua_Integer i2,
int inv, StkId res, TMS event);
LUAI_FUNC int luaT_callorderTM(lua_State *L, const TValue *p1,
const TValue *p2, TMS event);
LUAI_FUNC int luaT_callorderiTM(lua_State *L, const TValue *p1, int v2,
int inv, int isfloat, TMS event);
LUAI_FUNC void luaT_adjustvarargs (lua_State *L, int nfixparams,
struct CallInfo *ci, const Proto *p);
LUAI_FUNC void luaT_getvarargs (lua_State *L, struct CallInfo *ci,
StkId where, int wanted);
LUAI_FUNC void luaT_adjustvarargs(lua_State *L, int nfixparams,
struct CallInfo *ci, const Proto *p);
LUAI_FUNC void luaT_getvarargs(lua_State *L, struct CallInfo *ci,
StkId where, int wanted);
#endif

View file

@ -42,12 +42,12 @@ static const char *progname = LUA_PROGNAME;
/*
** Use 'sigaction' when available.
*/
static void setsignal (int sig, void (*handler)(int)) {
struct sigaction sa;
sa.sa_handler = handler;
sa.sa_flags = 0;
sigemptyset(&sa.sa_mask); /* do not mask any signal */
sigaction(sig, &sa, NULL);
static void setsignal(int sig, void (*handler)(int)) {
struct sigaction sa;
sa.sa_handler = handler;
sa.sa_flags = 0;
sigemptyset(&sa.sa_mask); /* do not mask any signal */
sigaction(sig, &sa, NULL);
}
#else /* }{ */
@ -60,10 +60,10 @@ static void setsignal (int sig, void (*handler)(int)) {
/*
** Hook set by signal function to stop the interpreter.
*/
static void lstop (lua_State *L, lua_Debug *ar) {
(void)ar; /* unused arg. */
lua_sethook(L, NULL, 0, 0); /* reset hook */
luaL_error(L, "interrupted!");
static void lstop(lua_State *L, lua_Debug *ar) {
(void)ar; /* unused arg. */
lua_sethook(L, NULL, 0, 0); /* reset hook */
luaL_error(L, "interrupted!");
}
@ -73,33 +73,33 @@ static void lstop (lua_State *L, lua_Debug *ar) {
** this function only sets a hook that, when called, will stop the
** interpreter.
*/
static void laction (int i) {
int flag = LUA_MASKCALL | LUA_MASKRET | LUA_MASKLINE | LUA_MASKCOUNT;
setsignal(i, SIG_DFL); /* if another SIGINT happens, terminate process */
lua_sethook(globalL, lstop, flag, 1);
static void laction(int i) {
int flag = LUA_MASKCALL | LUA_MASKRET | LUA_MASKLINE | LUA_MASKCOUNT;
setsignal(i, SIG_DFL); /* if another SIGINT happens, terminate process */
lua_sethook(globalL, lstop, flag, 1);
}
static void print_usage (const char *badoption) {
lua_writestringerror("%s: ", progname);
if (badoption[1] == 'e' || badoption[1] == 'l')
lua_writestringerror("'%s' needs argument\n", badoption);
else
lua_writestringerror("unrecognized option '%s'\n", badoption);
lua_writestringerror(
"usage: %s [options] [script [args]]\n"
"Available options are:\n"
" -e stat execute string 'stat'\n"
" -i enter interactive mode after executing 'script'\n"
" -l mod require library 'mod' into global 'mod'\n"
" -l g=mod require library 'mod' into global 'g'\n"
" -v show version information\n"
" -E ignore environment variables\n"
" -W turn warnings on\n"
" -- stop handling options\n"
" - stop handling options and execute stdin\n"
,
progname);
static void print_usage(const char *badoption) {
lua_writestringerror("%s: ", progname);
if (badoption[1] == 'e' || badoption[1] == 'l')
lua_writestringerror("'%s' needs argument\n", badoption);
else
lua_writestringerror("unrecognized option '%s'\n", badoption);
lua_writestringerror(
"usage: %s [options] [script [args]]\n"
"Available options are:\n"
" -e stat execute string 'stat'\n"
" -i enter interactive mode after executing 'script'\n"
" -l mod require library 'mod' into global 'mod'\n"
" -l g=mod require library 'mod' into global 'g'\n"
" -v show version information\n"
" -E ignore environment variables\n"
" -W turn warnings on\n"
" -- stop handling options\n"
" - stop handling options and execute stdin\n"
,
progname);
}
@ -107,9 +107,9 @@ static void print_usage (const char *badoption) {
** Prints an error message, adding the program name in front of it
** (if present)
*/
static void l_message (const char *pname, const char *msg) {
if (pname) lua_writestringerror("%s: ", pname);
lua_writestringerror("%s\n", msg);
static void l_message(const char *pname, const char *msg) {
if (pname) lua_writestringerror("%s: ", pname);
lua_writestringerror("%s\n", msg);
}
@ -117,33 +117,33 @@ static void l_message (const char *pname, const char *msg) {
** Check whether 'status' is not OK and, if so, prints the error
** message on the top of the stack.
*/
static int report (lua_State *L, int status) {
if (status != LUA_OK) {
const char *msg = lua_tostring(L, -1);
if (msg == NULL)
msg = "(error message not a string)";
l_message(progname, msg);
lua_pop(L, 1); /* remove message */
}
return status;
static int report(lua_State *L, int status) {
if (status != LUA_OK) {
const char *msg = lua_tostring(L, -1);
if (msg == NULL)
msg = "(error message not a string)";
l_message(progname, msg);
lua_pop(L, 1); /* remove message */
}
return status;
}
/*
** Message handler used to run all chunks
*/
static int msghandler (lua_State *L) {
const char *msg = lua_tostring(L, 1);
if (msg == NULL) { /* is error object not a string? */
if (luaL_callmeta(L, 1, "__tostring") && /* does it have a metamethod */
lua_type(L, -1) == LUA_TSTRING) /* that produces a string? */
return 1; /* that is the message */
else
msg = lua_pushfstring(L, "(error object is a %s value)",
luaL_typename(L, 1));
}
luaL_traceback(L, L, msg, 1); /* append a standard traceback */
return 1; /* return the traceback */
static int msghandler(lua_State *L) {
const char *msg = lua_tostring(L, 1);
if (msg == NULL) { /* is error object not a string? */
if (luaL_callmeta(L, 1, "__tostring") && /* does it have a metamethod */
lua_type(L, -1) == LUA_TSTRING) /* that produces a string? */
return 1; /* that is the message */
else
msg = lua_pushfstring(L, "(error object is a %s value)",
luaL_typename(L, 1));
}
luaL_traceback(L, L, msg, 1); /* append a standard traceback */
return 1; /* return the traceback */
}
@ -151,23 +151,23 @@ static int msghandler (lua_State *L) {
** Interface to 'lua_pcall', which sets appropriate message function
** and C-signal handler. Used to run all chunks.
*/
static int docall (lua_State *L, int narg, int nres) {
int status;
int base = lua_gettop(L) - narg; /* function index */
lua_pushcfunction(L, msghandler); /* push message handler */
lua_insert(L, base); /* put it under function and args */
globalL = L; /* to be available to 'laction' */
setsignal(SIGINT, laction); /* set C-signal handler */
status = lua_pcall(L, narg, nres, base);
setsignal(SIGINT, SIG_DFL); /* reset C-signal handler */
lua_remove(L, base); /* remove message handler from the stack */
return status;
static int docall(lua_State *L, int narg, int nres) {
int status;
int base = lua_gettop(L) - narg; /* function index */
lua_pushcfunction(L, msghandler); /* push message handler */
lua_insert(L, base); /* put it under function and args */
globalL = L; /* to be available to 'laction' */
setsignal(SIGINT, laction); /* set C-signal handler */
status = lua_pcall(L, narg, nres, base);
setsignal(SIGINT, SIG_DFL); /* reset C-signal handler */
lua_remove(L, base); /* remove message handler from the stack */
return status;
}
static void print_version (void) {
lua_writestring(LUA_COPYRIGHT, strlen(LUA_COPYRIGHT));
lua_writeline();
static void print_version(void) {
lua_writestring(LUA_COPYRIGHT, strlen(LUA_COPYRIGHT));
lua_writeline();
}
@ -181,31 +181,31 @@ static void print_version (void) {
** (If there is no interpreter's name either, 'script' is -1, so
** table sizes are zero.)
*/
static void createargtable (lua_State *L, char **argv, int argc, int script) {
int i, narg;
narg = argc - (script + 1); /* number of positive indices */
lua_createtable(L, narg, script + 1);
for (i = 0; i < argc; i++) {
lua_pushstring(L, argv[i]);
lua_rawseti(L, -2, i - script);
}
lua_setglobal(L, "arg");
static void createargtable(lua_State *L, char **argv, int argc, int script) {
int i, narg;
narg = argc - (script + 1); /* number of positive indices */
lua_createtable(L, narg, script + 1);
for (i = 0; i < argc; i++) {
lua_pushstring(L, argv[i]);
lua_rawseti(L, -2, i - script);
}
lua_setglobal(L, "arg");
}
static int dochunk (lua_State *L, int status) {
if (status == LUA_OK) status = docall(L, 0, 0);
return report(L, status);
static int dochunk(lua_State *L, int status) {
if (status == LUA_OK) status = docall(L, 0, 0);
return report(L, status);
}
static int dofile (lua_State *L, const char *name) {
return dochunk(L, luaL_loadfile(L, name));
static int dofile(lua_State *L, const char *name) {
return dochunk(L, luaL_loadfile(L, name));
}
static int dostring (lua_State *L, const char *s, const char *name) {
return dochunk(L, luaL_loadbuffer(L, s, strlen(s), name));
static int dostring(lua_State *L, const char *s, const char *name) {
return dochunk(L, luaL_loadbuffer(L, s, strlen(s), name));
}
@ -214,57 +214,56 @@ static int dostring (lua_State *L, const char *s, const char *name) {
** If there is no explicit modname and globname contains a '-', cut
** the suffix after '-' (the "version") to make the global name.
*/
static int dolibrary (lua_State *L, char *globname) {
int status;
char *suffix = NULL;
char *modname = strchr(globname, '=');
if (modname == NULL) { /* no explicit name? */
modname = globname; /* module name is equal to global name */
suffix = strchr(modname, *LUA_IGMARK); /* look for a suffix mark */
}
else {
*modname = '\0'; /* global name ends here */
modname++; /* module name starts after the '=' */
}
lua_getglobal(L, "require");
lua_pushstring(L, modname);
status = docall(L, 1, 1); /* call 'require(modname)' */
if (status == LUA_OK) {
if (suffix != NULL) /* is there a suffix mark? */
*suffix = '\0'; /* remove suffix from global name */
lua_setglobal(L, globname); /* globname = require(modname) */
}
return report(L, status);
static int dolibrary(lua_State *L, char *globname) {
int status;
char *suffix = NULL;
char *modname = strchr(globname, '=');
if (modname == NULL) { /* no explicit name? */
modname = globname; /* module name is equal to global name */
suffix = strchr(modname, *LUA_IGMARK); /* look for a suffix mark */
} else {
*modname = '\0'; /* global name ends here */
modname++; /* module name starts after the '=' */
}
lua_getglobal(L, "require");
lua_pushstring(L, modname);
status = docall(L, 1, 1); /* call 'require(modname)' */
if (status == LUA_OK) {
if (suffix != NULL) /* is there a suffix mark? */
*suffix = '\0'; /* remove suffix from global name */
lua_setglobal(L, globname); /* globname = require(modname) */
}
return report(L, status);
}
/*
** Push on the stack the contents of table 'arg' from 1 to #arg
*/
static int pushargs (lua_State *L) {
int i, n;
if (lua_getglobal(L, "arg") != LUA_TTABLE)
luaL_error(L, "'arg' is not a table");
n = (int)luaL_len(L, -1);
luaL_checkstack(L, n + 3, "too many arguments to script");
for (i = 1; i <= n; i++)
lua_rawgeti(L, -i, i);
lua_remove(L, -i); /* remove table from the stack */
return n;
static int pushargs(lua_State *L) {
int i, n;
if (lua_getglobal(L, "arg") != LUA_TTABLE)
luaL_error(L, "'arg' is not a table");
n = (int)luaL_len(L, -1);
luaL_checkstack(L, n + 3, "too many arguments to script");
for (i = 1; i <= n; i++)
lua_rawgeti(L, -i, i);
lua_remove(L, -i); /* remove table from the stack */
return n;
}
static int handle_script (lua_State *L, char **argv) {
int status;
const char *fname = argv[0];
if (strcmp(fname, "-") == 0 && strcmp(argv[-1], "--") != 0)
fname = NULL; /* stdin */
status = luaL_loadfile(L, fname);
if (status == LUA_OK) {
int n = pushargs(L); /* push arguments to script */
status = docall(L, n, LUA_MULTRET);
}
return report(L, status);
static int handle_script(lua_State *L, char **argv) {
int status;
const char *fname = argv[0];
if (strcmp(fname, "-") == 0 && strcmp(argv[-1], "--") != 0)
fname = NULL; /* stdin */
status = luaL_loadfile(L, fname);
if (status == LUA_OK) {
int n = pushargs(L); /* push arguments to script */
status = docall(L, n, LUA_MULTRET);
}
return report(L, status);
}
@ -283,60 +282,59 @@ static int handle_script (lua_State *L, char **argv) {
** argument. Otherwise, 'first' is -1 if there is no program name,
** 0 if there is no script name, or the index of the script name.
*/
static int collectargs (char **argv, int *first) {
int args = 0;
int i;
if (argv[0] != NULL) { /* is there a program name? */
if (argv[0][0]) /* not empty? */
progname = argv[0]; /* save it */
}
else { /* no program name */
*first = -1;
return 0;
}
for (i = 1; argv[i] != NULL; i++) { /* handle arguments */
*first = i;
if (argv[i][0] != '-') /* not an option? */
return args; /* stop handling options */
switch (argv[i][1]) { /* else check option */
case '-': /* '--' */
if (argv[i][2] != '\0') /* extra characters after '--'? */
return has_error; /* invalid option */
*first = i + 1;
return args;
case '\0': /* '-' */
return args; /* script "name" is '-' */
case 'E':
if (argv[i][2] != '\0') /* extra characters? */
return has_error; /* invalid option */
args |= has_E;
break;
case 'W':
if (argv[i][2] != '\0') /* extra characters? */
return has_error; /* invalid option */
break;
case 'i':
args |= has_i; /* (-i implies -v) *//* FALLTHROUGH */
case 'v':
if (argv[i][2] != '\0') /* extra characters? */
return has_error; /* invalid option */
args |= has_v;
break;
case 'e':
args |= has_e; /* FALLTHROUGH */
case 'l': /* both options need an argument */
if (argv[i][2] == '\0') { /* no concatenated argument? */
i++; /* try next 'argv' */
if (argv[i] == NULL || argv[i][0] == '-')
return has_error; /* no next argument or it is another option */
}
break;
default: /* invalid option */
return has_error;
static int collectargs(char **argv, int *first) {
int args = 0;
int i;
if (argv[0] != NULL) { /* is there a program name? */
if (argv[0][0]) /* not empty? */
progname = argv[0]; /* save it */
} else { /* no program name */
*first = -1;
return 0;
}
}
*first = 0; /* no script name */
return args;
for (i = 1; argv[i] != NULL; i++) { /* handle arguments */
*first = i;
if (argv[i][0] != '-') /* not an option? */
return args; /* stop handling options */
switch (argv[i][1]) { /* else check option */
case '-': /* '--' */
if (argv[i][2] != '\0') /* extra characters after '--'? */
return has_error; /* invalid option */
*first = i + 1;
return args;
case '\0': /* '-' */
return args; /* script "name" is '-' */
case 'E':
if (argv[i][2] != '\0') /* extra characters? */
return has_error; /* invalid option */
args |= has_E;
break;
case 'W':
if (argv[i][2] != '\0') /* extra characters? */
return has_error; /* invalid option */
break;
case 'i':
args |= has_i; /* (-i implies -v) *//* FALLTHROUGH */
case 'v':
if (argv[i][2] != '\0') /* extra characters? */
return has_error; /* invalid option */
args |= has_v;
break;
case 'e':
args |= has_e; /* FALLTHROUGH */
case 'l': /* both options need an argument */
if (argv[i][2] == '\0') { /* no concatenated argument? */
i++; /* try next 'argv' */
if (argv[i] == NULL || argv[i][0] == '-')
return has_error; /* no next argument or it is another option */
}
break;
default: /* invalid option */
return has_error;
}
}
*first = 0; /* no script name */
return args;
}
@ -345,44 +343,45 @@ static int collectargs (char **argv, int *first) {
** 'W', which also affects the state.
** Returns 0 if some code raises an error.
*/
static int runargs (lua_State *L, char **argv, int n) {
int i;
for (i = 1; i < n; i++) {
int option = argv[i][1];
lua_assert(argv[i][0] == '-'); /* already checked */
switch (option) {
case 'e': case 'l': {
int status;
char *extra = argv[i] + 2; /* both options need an argument */
if (*extra == '\0') extra = argv[++i];
lua_assert(extra != NULL);
status = (option == 'e')
? dostring(L, extra, "=(command line)")
: dolibrary(L, extra);
if (status != LUA_OK) return 0;
break;
}
case 'W':
lua_warning(L, "@on", 0); /* warnings on */
break;
static int runargs(lua_State *L, char **argv, int n) {
int i;
for (i = 1; i < n; i++) {
int option = argv[i][1];
lua_assert(argv[i][0] == '-'); /* already checked */
switch (option) {
case 'e':
case 'l': {
int status;
char *extra = argv[i] + 2; /* both options need an argument */
if (*extra == '\0') extra = argv[++i];
lua_assert(extra != NULL);
status = (option == 'e')
? dostring(L, extra, "=(command line)")
: dolibrary(L, extra);
if (status != LUA_OK) return 0;
break;
}
case 'W':
lua_warning(L, "@on", 0); /* warnings on */
break;
}
}
}
return 1;
return 1;
}
static int handle_luainit (lua_State *L) {
const char *name = "=" LUA_INITVARVERSION;
const char *init = getenv(name + 1);
if (init == NULL) {
name = "=" LUA_INIT_VAR;
init = getenv(name + 1); /* try alternative name */
}
if (init == NULL) return LUA_OK;
else if (init[0] == '@')
return dofile(L, init+1);
else
return dostring(L, init, name);
static int handle_luainit(lua_State *L) {
const char *name = "=" LUA_INITVARVERSION;
const char *init = getenv(name + 1);
if (init == NULL) {
name = "=" LUA_INIT_VAR;
init = getenv(name + 1); /* try alternative name */
}
if (init == NULL) return LUA_OK;
else if (init[0] == '@')
return dofile(L, init + 1);
else
return dostring(L, init, name);
}
@ -466,14 +465,14 @@ static int handle_luainit (lua_State *L) {
** the string (or nil, if using the default value) on the stack, to keep
** it anchored.
*/
static const char *get_prompt (lua_State *L, int firstline) {
if (lua_getglobal(L, firstline ? "_PROMPT" : "_PROMPT2") == LUA_TNIL)
return (firstline ? LUA_PROMPT : LUA_PROMPT2); /* use the default */
else { /* apply 'tostring' over the value */
const char *p = luaL_tolstring(L, -1, NULL);
lua_remove(L, -2); /* remove original value */
return p;
}
static const char *get_prompt(lua_State *L, int firstline) {
if (lua_getglobal(L, firstline ? "_PROMPT" : "_PROMPT2") == LUA_TNIL)
return (firstline ? LUA_PROMPT : LUA_PROMPT2); /* use the default */
else { /* apply 'tostring' over the value */
const char *p = luaL_tolstring(L, -1, NULL);
lua_remove(L, -2); /* remove original value */
return p;
}
}
/* mark in error messages for incomplete statements */
@ -486,40 +485,40 @@ static const char *get_prompt (lua_State *L, int firstline) {
** message at the top of the stack ends with the above mark for
** incomplete statements.
*/
static int incomplete (lua_State *L, int status) {
if (status == LUA_ERRSYNTAX) {
size_t lmsg;
const char *msg = lua_tolstring(L, -1, &lmsg);
if (lmsg >= marklen && strcmp(msg + lmsg - marklen, EOFMARK) == 0) {
lua_pop(L, 1);
return 1;
static int incomplete(lua_State *L, int status) {
if (status == LUA_ERRSYNTAX) {
size_t lmsg;
const char *msg = lua_tolstring(L, -1, &lmsg);
if (lmsg >= marklen && strcmp(msg + lmsg - marklen, EOFMARK) == 0) {
lua_pop(L, 1);
return 1;
}
}
}
return 0; /* else... */
return 0; /* else... */
}
/*
** Prompt the user, read a line, and push it into the Lua stack.
*/
static int pushline (lua_State *L, int firstline) {
char buffer[LUA_MAXINPUT];
char *b = buffer;
size_t l;
const char *prmt = get_prompt(L, firstline);
int readstatus = lua_readline(L, b, prmt);
if (readstatus == 0)
return 0; /* no input (prompt will be popped by caller) */
lua_pop(L, 1); /* remove prompt */
l = strlen(b);
if (l > 0 && b[l-1] == '\n') /* line ends with newline? */
b[--l] = '\0'; /* remove it */
if (firstline && b[0] == '=') /* for compatibility with 5.2, ... */
lua_pushfstring(L, "return %s", b + 1); /* change '=' to 'return' */
else
lua_pushlstring(L, b, l);
lua_freeline(L, b);
return 1;
static int pushline(lua_State *L, int firstline) {
char buffer[LUA_MAXINPUT];
char *b = buffer;
size_t l;
const char *prmt = get_prompt(L, firstline);
int readstatus = lua_readline(L, b, prmt);
if (readstatus == 0)
return 0; /* no input (prompt will be popped by caller) */
lua_pop(L, 1); /* remove prompt */
l = strlen(b);
if (l > 0 && b[l - 1] == '\n') /* line ends with newline? */
b[--l] = '\0'; /* remove it */
if (firstline && b[0] == '=') /* for compatibility with 5.2, ... */
lua_pushfstring(L, "return %s", b + 1); /* change '=' to 'return' */
else
lua_pushlstring(L, b, l);
lua_freeline(L, b);
return 1;
}
@ -527,37 +526,36 @@ static int pushline (lua_State *L, int firstline) {
** Try to compile line on the stack as 'return <line>;'; on return, stack
** has either compiled chunk or original line (if compilation failed).
*/
static int addreturn (lua_State *L) {
const char *line = lua_tostring(L, -1); /* original line */
const char *retline = lua_pushfstring(L, "return %s;", line);
int status = luaL_loadbuffer(L, retline, strlen(retline), "=stdin");
if (status == LUA_OK) {
lua_remove(L, -2); /* remove modified line */
if (line[0] != '\0') /* non empty? */
lua_saveline(L, line); /* keep history */
}
else
lua_pop(L, 2); /* pop result from 'luaL_loadbuffer' and modified line */
return status;
static int addreturn(lua_State *L) {
const char *line = lua_tostring(L, -1); /* original line */
const char *retline = lua_pushfstring(L, "return %s;", line);
int status = luaL_loadbuffer(L, retline, strlen(retline), "=stdin");
if (status == LUA_OK) {
lua_remove(L, -2); /* remove modified line */
if (line[0] != '\0') /* non empty? */
lua_saveline(L, line); /* keep history */
} else
lua_pop(L, 2); /* pop result from 'luaL_loadbuffer' and modified line */
return status;
}
/*
** Read multiple lines until a complete Lua statement
*/
static int multiline (lua_State *L) {
for (;;) { /* repeat until gets a complete statement */
size_t len;
const char *line = lua_tolstring(L, 1, &len); /* get what it has */
int status = luaL_loadbuffer(L, line, len, "=stdin"); /* try it */
if (!incomplete(L, status) || !pushline(L, 0)) {
lua_saveline(L, line); /* keep history */
return status; /* cannot or should not try to add continuation line */
static int multiline(lua_State *L) {
for (;;) { /* repeat until gets a complete statement */
size_t len;
const char *line = lua_tolstring(L, 1, &len); /* get what it has */
int status = luaL_loadbuffer(L, line, len, "=stdin"); /* try it */
if (!incomplete(L, status) || !pushline(L, 0)) {
lua_saveline(L, line); /* keep history */
return status; /* cannot or should not try to add continuation line */
}
lua_pushliteral(L, "\n"); /* add newline... */
lua_insert(L, -2); /* ...between the two lines */
lua_concat(L, 3); /* join them */
}
lua_pushliteral(L, "\n"); /* add newline... */
lua_insert(L, -2); /* ...between the two lines */
lua_concat(L, 3); /* join them */
}
}
@ -567,32 +565,32 @@ static int multiline (lua_State *L) {
** the final status of load/call with the resulting function (if any)
** in the top of the stack.
*/
static int loadline (lua_State *L) {
int status;
lua_settop(L, 0);
if (!pushline(L, 1))
return -1; /* no input */
if ((status = addreturn(L)) != LUA_OK) /* 'return ...' did not work? */
status = multiline(L); /* try as command, maybe with continuation lines */
lua_remove(L, 1); /* remove line from the stack */
lua_assert(lua_gettop(L) == 1);
return status;
static int loadline(lua_State *L) {
int status;
lua_settop(L, 0);
if (!pushline(L, 1))
return -1; /* no input */
if ((status = addreturn(L)) != LUA_OK) /* 'return ...' did not work? */
status = multiline(L); /* try as command, maybe with continuation lines */
lua_remove(L, 1); /* remove line from the stack */
lua_assert(lua_gettop(L) == 1);
return status;
}
/*
** Prints (calling the Lua 'print' function) any values on the stack
*/
static void l_print (lua_State *L) {
int n = lua_gettop(L);
if (n > 0) { /* any result to be printed? */
luaL_checkstack(L, LUA_MINSTACK, "too many results to print");
lua_getglobal(L, "print");
lua_insert(L, 1);
if (lua_pcall(L, n, 0, 0) != LUA_OK)
l_message(progname, lua_pushfstring(L, "error calling 'print' (%s)",
lua_tostring(L, -1)));
}
static void l_print(lua_State *L) {
int n = lua_gettop(L);
if (n > 0) { /* any result to be printed? */
luaL_checkstack(L, LUA_MINSTACK, "too many results to print");
lua_getglobal(L, "print");
lua_insert(L, 1);
if (lua_pcall(L, n, 0, 0) != LUA_OK)
l_message(progname, lua_pushfstring(L, "error calling 'print' (%s)",
lua_tostring(L, -1)));
}
}
@ -600,20 +598,20 @@ static void l_print (lua_State *L) {
** Do the REPL: repeatedly read (load) a line, evaluate (call) it, and
** print any results.
*/
static void doREPL (lua_State *L) {
int status;
const char *oldprogname = progname;
progname = NULL; /* no 'progname' on errors in interactive mode */
lua_initreadline(L);
while ((status = loadline(L)) != -1) {
if (status == LUA_OK)
status = docall(L, 0, LUA_MULTRET);
if (status == LUA_OK) l_print(L);
else report(L, status);
}
lua_settop(L, 0); /* clear stack */
lua_writeline();
progname = oldprogname;
static void doREPL(lua_State *L) {
int status;
const char *oldprogname = progname;
progname = NULL; /* no 'progname' on errors in interactive mode */
lua_initreadline(L);
while ((status = loadline(L)) != -1) {
if (status == LUA_OK)
status = docall(L, 0, LUA_MULTRET);
if (status == LUA_OK) l_print(L);
else report(L, status);
}
lua_settop(L, 0); /* clear stack */
lua_writeline();
progname = oldprogname;
}
/* }================================================================== */
@ -623,66 +621,65 @@ static void doREPL (lua_State *L) {
** Main body of stand-alone interpreter (to be called in protected mode).
** Reads the options and handles them all.
*/
static int pmain (lua_State *L) {
int argc = (int)lua_tointeger(L, 1);
char **argv = (char **)lua_touserdata(L, 2);
int script;
int args = collectargs(argv, &script);
int optlim = (script > 0) ? script : argc; /* first argv not an option */
luaL_checkversion(L); /* check that interpreter has correct version */
if (args == has_error) { /* bad arg? */
print_usage(argv[script]); /* 'script' has index of bad arg. */
return 0;
}
if (args & has_v) /* option '-v'? */
print_version();
if (args & has_E) { /* option '-E'? */
lua_pushboolean(L, 1); /* signal for libraries to ignore env. vars. */
lua_setfield(L, LUA_REGISTRYINDEX, "LUA_NOENV");
}
luaL_openlibs(L); /* open standard libraries */
createargtable(L, argv, argc, script); /* create table 'arg' */
lua_gc(L, LUA_GCRESTART); /* start GC... */
lua_gc(L, LUA_GCGEN, 0, 0); /* ...in generational mode */
if (!(args & has_E)) { /* no option '-E'? */
if (handle_luainit(L) != LUA_OK) /* run LUA_INIT */
return 0; /* error running LUA_INIT */
}
if (!runargs(L, argv, optlim)) /* execute arguments -e and -l */
return 0; /* something failed */
if (script > 0) { /* execute main script (if there is one) */
if (handle_script(L, argv + script) != LUA_OK)
return 0; /* interrupt in case of error */
}
if (args & has_i) /* -i option? */
doREPL(L); /* do read-eval-print loop */
else if (script < 1 && !(args & (has_e | has_v))) { /* no active option? */
if (lua_stdin_is_tty()) { /* running in interactive mode? */
print_version();
doREPL(L); /* do read-eval-print loop */
static int pmain(lua_State *L) {
int argc = (int)lua_tointeger(L, 1);
char **argv = (char **)lua_touserdata(L, 2);
int script;
int args = collectargs(argv, &script);
int optlim = (script > 0) ? script : argc; /* first argv not an option */
luaL_checkversion(L); /* check that interpreter has correct version */
if (args == has_error) { /* bad arg? */
print_usage(argv[script]); /* 'script' has index of bad arg. */
return 0;
}
else dofile(L, NULL); /* executes stdin as a file */
}
lua_pushboolean(L, 1); /* signal no errors */
return 1;
if (args & has_v) /* option '-v'? */
print_version();
if (args & has_E) { /* option '-E'? */
lua_pushboolean(L, 1); /* signal for libraries to ignore env. vars. */
lua_setfield(L, LUA_REGISTRYINDEX, "LUA_NOENV");
}
luaL_openlibs(L); /* open standard libraries */
createargtable(L, argv, argc, script); /* create table 'arg' */
lua_gc(L, LUA_GCRESTART); /* start GC... */
lua_gc(L, LUA_GCGEN, 0, 0); /* ...in generational mode */
if (!(args & has_E)) { /* no option '-E'? */
if (handle_luainit(L) != LUA_OK) /* run LUA_INIT */
return 0; /* error running LUA_INIT */
}
if (!runargs(L, argv, optlim)) /* execute arguments -e and -l */
return 0; /* something failed */
if (script > 0) { /* execute main script (if there is one) */
if (handle_script(L, argv + script) != LUA_OK)
return 0; /* interrupt in case of error */
}
if (args & has_i) /* -i option? */
doREPL(L); /* do read-eval-print loop */
else if (script < 1 && !(args & (has_e | has_v))) { /* no active option? */
if (lua_stdin_is_tty()) { /* running in interactive mode? */
print_version();
doREPL(L); /* do read-eval-print loop */
} else dofile(L, NULL); /* executes stdin as a file */
}
lua_pushboolean(L, 1); /* signal no errors */
return 1;
}
int main (int argc, char **argv) {
int status, result;
lua_State *L = luaL_newstate(); /* create state */
if (L == NULL) {
l_message(argv[0], "cannot create state: not enough memory");
return EXIT_FAILURE;
}
lua_gc(L, LUA_GCSTOP); /* stop GC while building state */
lua_pushcfunction(L, &pmain); /* to call 'pmain' in protected mode */
lua_pushinteger(L, argc); /* 1st argument */
lua_pushlightuserdata(L, argv); /* 2nd argument */
status = lua_pcall(L, 2, 1, 0); /* do the call */
result = lua_toboolean(L, -1); /* get result */
report(L, status);
lua_close(L);
return (result && status == LUA_OK) ? EXIT_SUCCESS : EXIT_FAILURE;
int main(int argc, char **argv) {
int status, result;
lua_State *L = luaL_newstate(); /* create state */
if (L == NULL) {
l_message(argv[0], "cannot create state: not enough memory");
return EXIT_FAILURE;
}
lua_gc(L, LUA_GCSTOP); /* stop GC while building state */
lua_pushcfunction(L, &pmain); /* to call 'pmain' in protected mode */
lua_pushinteger(L, argc); /* 1st argument */
lua_pushlightuserdata(L, argv); /* 2nd argument */
status = lua_pcall(L, 2, 1, 0); /* do the call */
result = lua_toboolean(L, -1); /* get result */
report(L, status);
lua_close(L);
return (result && status == LUA_OK) ? EXIT_SUCCESS : EXIT_FAILURE;
}

View file

@ -103,32 +103,32 @@ typedef LUA_KCONTEXT lua_KContext;
/*
** Type for C functions registered with Lua
*/
typedef int (*lua_CFunction) (lua_State *L);
typedef int (*lua_CFunction)(lua_State *L);
/*
** Type for continuation functions
*/
typedef int (*lua_KFunction) (lua_State *L, int status, lua_KContext ctx);
typedef int (*lua_KFunction)(lua_State *L, int status, lua_KContext ctx);
/*
** Type for functions that read/write blocks when loading/dumping Lua chunks
*/
typedef const char * (*lua_Reader) (lua_State *L, void *ud, size_t *sz);
typedef const char *(*lua_Reader)(lua_State *L, void *ud, size_t *sz);
typedef int (*lua_Writer) (lua_State *L, const void *p, size_t sz, void *ud);
typedef int (*lua_Writer)(lua_State *L, const void *p, size_t sz, void *ud);
/*
** Type for memory-allocation functions
*/
typedef void * (*lua_Alloc) (void *ud, void *ptr, size_t osize, size_t nsize);
typedef void *(*lua_Alloc)(void *ud, void *ptr, size_t osize, size_t nsize);
/*
** Type for warning functions
*/
typedef void (*lua_WarnFunction) (void *ud, const char *msg, int tocont);
typedef void (*lua_WarnFunction)(void *ud, const char *msg, int tocont);
/*
@ -140,7 +140,7 @@ typedef struct lua_Debug lua_Debug;
/*
** Functions to be called by the debugger in specific events
*/
typedef void (*lua_Hook) (lua_State *L, lua_Debug *ar);
typedef void (*lua_Hook)(lua_State *L, lua_Debug *ar);
/*
@ -160,53 +160,53 @@ extern const char lua_ident[];
/*
** state manipulation
*/
LUA_API lua_State *(lua_newstate) (lua_Alloc f, void *ud);
LUA_API void (lua_close) (lua_State *L);
LUA_API lua_State *(lua_newthread) (lua_State *L);
LUA_API int (lua_closethread) (lua_State *L, lua_State *from);
LUA_API int (lua_resetthread) (lua_State *L); /* Deprecated! */
LUA_API lua_State *(lua_newstate)(lua_Alloc f, void *ud);
LUA_API void (lua_close)(lua_State *L);
LUA_API lua_State *(lua_newthread)(lua_State *L);
LUA_API int (lua_closethread)(lua_State *L, lua_State *from);
LUA_API int (lua_resetthread)(lua_State *L); /* Deprecated! */
LUA_API lua_CFunction (lua_atpanic) (lua_State *L, lua_CFunction panicf);
LUA_API lua_CFunction(lua_atpanic)(lua_State *L, lua_CFunction panicf);
LUA_API lua_Number (lua_version) (lua_State *L);
LUA_API lua_Number(lua_version)(lua_State *L);
/*
** basic stack manipulation
*/
LUA_API int (lua_absindex) (lua_State *L, int idx);
LUA_API int (lua_gettop) (lua_State *L);
LUA_API void (lua_settop) (lua_State *L, int idx);
LUA_API void (lua_pushvalue) (lua_State *L, int idx);
LUA_API void (lua_rotate) (lua_State *L, int idx, int n);
LUA_API void (lua_copy) (lua_State *L, int fromidx, int toidx);
LUA_API int (lua_checkstack) (lua_State *L, int n);
LUA_API int (lua_absindex)(lua_State *L, int idx);
LUA_API int (lua_gettop)(lua_State *L);
LUA_API void (lua_settop)(lua_State *L, int idx);
LUA_API void (lua_pushvalue)(lua_State *L, int idx);
LUA_API void (lua_rotate)(lua_State *L, int idx, int n);
LUA_API void (lua_copy)(lua_State *L, int fromidx, int toidx);
LUA_API int (lua_checkstack)(lua_State *L, int n);
LUA_API void (lua_xmove) (lua_State *from, lua_State *to, int n);
LUA_API void (lua_xmove)(lua_State *from, lua_State *to, int n);
/*
** access functions (stack -> C)
*/
LUA_API int (lua_isnumber) (lua_State *L, int idx);
LUA_API int (lua_isstring) (lua_State *L, int idx);
LUA_API int (lua_iscfunction) (lua_State *L, int idx);
LUA_API int (lua_isinteger) (lua_State *L, int idx);
LUA_API int (lua_isuserdata) (lua_State *L, int idx);
LUA_API int (lua_type) (lua_State *L, int idx);
LUA_API const char *(lua_typename) (lua_State *L, int tp);
LUA_API int (lua_isnumber)(lua_State *L, int idx);
LUA_API int (lua_isstring)(lua_State *L, int idx);
LUA_API int (lua_iscfunction)(lua_State *L, int idx);
LUA_API int (lua_isinteger)(lua_State *L, int idx);
LUA_API int (lua_isuserdata)(lua_State *L, int idx);
LUA_API int (lua_type)(lua_State *L, int idx);
LUA_API const char *(lua_typename)(lua_State *L, int tp);
LUA_API lua_Number (lua_tonumberx) (lua_State *L, int idx, int *isnum);
LUA_API lua_Integer (lua_tointegerx) (lua_State *L, int idx, int *isnum);
LUA_API int (lua_toboolean) (lua_State *L, int idx);
LUA_API const char *(lua_tolstring) (lua_State *L, int idx, size_t *len);
LUA_API lua_Unsigned (lua_rawlen) (lua_State *L, int idx);
LUA_API lua_CFunction (lua_tocfunction) (lua_State *L, int idx);
LUA_API void *(lua_touserdata) (lua_State *L, int idx);
LUA_API lua_State *(lua_tothread) (lua_State *L, int idx);
LUA_API const void *(lua_topointer) (lua_State *L, int idx);
LUA_API lua_Number(lua_tonumberx)(lua_State *L, int idx, int *isnum);
LUA_API lua_Integer(lua_tointegerx)(lua_State *L, int idx, int *isnum);
LUA_API int (lua_toboolean)(lua_State *L, int idx);
LUA_API const char *(lua_tolstring)(lua_State *L, int idx, size_t *len);
LUA_API lua_Unsigned(lua_rawlen)(lua_State *L, int idx);
LUA_API lua_CFunction(lua_tocfunction)(lua_State *L, int idx);
LUA_API void *(lua_touserdata)(lua_State *L, int idx);
LUA_API lua_State *(lua_tothread)(lua_State *L, int idx);
LUA_API const void *(lua_topointer)(lua_State *L, int idx);
/*
@ -228,90 +228,90 @@ LUA_API const void *(lua_topointer) (lua_State *L, int idx);
#define LUA_OPUNM 12
#define LUA_OPBNOT 13
LUA_API void (lua_arith) (lua_State *L, int op);
LUA_API void (lua_arith)(lua_State *L, int op);
#define LUA_OPEQ 0
#define LUA_OPLT 1
#define LUA_OPLE 2
LUA_API int (lua_rawequal) (lua_State *L, int idx1, int idx2);
LUA_API int (lua_compare) (lua_State *L, int idx1, int idx2, int op);
LUA_API int (lua_rawequal)(lua_State *L, int idx1, int idx2);
LUA_API int (lua_compare)(lua_State *L, int idx1, int idx2, int op);
/*
** push functions (C -> stack)
*/
LUA_API void (lua_pushnil) (lua_State *L);
LUA_API void (lua_pushnumber) (lua_State *L, lua_Number n);
LUA_API void (lua_pushinteger) (lua_State *L, lua_Integer n);
LUA_API const char *(lua_pushlstring) (lua_State *L, const char *s, size_t len);
LUA_API const char *(lua_pushstring) (lua_State *L, const char *s);
LUA_API const char *(lua_pushvfstring) (lua_State *L, const char *fmt,
va_list argp);
LUA_API const char *(lua_pushfstring) (lua_State *L, const char *fmt, ...);
LUA_API void (lua_pushcclosure) (lua_State *L, lua_CFunction fn, int n);
LUA_API void (lua_pushboolean) (lua_State *L, int b);
LUA_API void (lua_pushlightuserdata) (lua_State *L, void *p);
LUA_API int (lua_pushthread) (lua_State *L);
LUA_API void (lua_pushnil)(lua_State *L);
LUA_API void (lua_pushnumber)(lua_State *L, lua_Number n);
LUA_API void (lua_pushinteger)(lua_State *L, lua_Integer n);
LUA_API const char *(lua_pushlstring)(lua_State *L, const char *s, size_t len);
LUA_API const char *(lua_pushstring)(lua_State *L, const char *s);
LUA_API const char *(lua_pushvfstring)(lua_State *L, const char *fmt,
va_list argp);
LUA_API const char *(lua_pushfstring)(lua_State *L, const char *fmt, ...);
LUA_API void (lua_pushcclosure)(lua_State *L, lua_CFunction fn, int n);
LUA_API void (lua_pushboolean)(lua_State *L, int b);
LUA_API void (lua_pushlightuserdata)(lua_State *L, void *p);
LUA_API int (lua_pushthread)(lua_State *L);
/*
** get functions (Lua -> stack)
*/
LUA_API int (lua_getglobal) (lua_State *L, const char *name);
LUA_API int (lua_gettable) (lua_State *L, int idx);
LUA_API int (lua_getfield) (lua_State *L, int idx, const char *k);
LUA_API int (lua_geti) (lua_State *L, int idx, lua_Integer n);
LUA_API int (lua_rawget) (lua_State *L, int idx);
LUA_API int (lua_rawgeti) (lua_State *L, int idx, lua_Integer n);
LUA_API int (lua_rawgetp) (lua_State *L, int idx, const void *p);
LUA_API int (lua_getglobal)(lua_State *L, const char *name);
LUA_API int (lua_gettable)(lua_State *L, int idx);
LUA_API int (lua_getfield)(lua_State *L, int idx, const char *k);
LUA_API int (lua_geti)(lua_State *L, int idx, lua_Integer n);
LUA_API int (lua_rawget)(lua_State *L, int idx);
LUA_API int (lua_rawgeti)(lua_State *L, int idx, lua_Integer n);
LUA_API int (lua_rawgetp)(lua_State *L, int idx, const void *p);
LUA_API void (lua_createtable) (lua_State *L, int narr, int nrec);
LUA_API void *(lua_newuserdatauv) (lua_State *L, size_t sz, int nuvalue);
LUA_API int (lua_getmetatable) (lua_State *L, int objindex);
LUA_API int (lua_getiuservalue) (lua_State *L, int idx, int n);
LUA_API void (lua_createtable)(lua_State *L, int narr, int nrec);
LUA_API void *(lua_newuserdatauv)(lua_State *L, size_t sz, int nuvalue);
LUA_API int (lua_getmetatable)(lua_State *L, int objindex);
LUA_API int (lua_getiuservalue)(lua_State *L, int idx, int n);
/*
** set functions (stack -> Lua)
*/
LUA_API void (lua_setglobal) (lua_State *L, const char *name);
LUA_API void (lua_settable) (lua_State *L, int idx);
LUA_API void (lua_setfield) (lua_State *L, int idx, const char *k);
LUA_API void (lua_seti) (lua_State *L, int idx, lua_Integer n);
LUA_API void (lua_rawset) (lua_State *L, int idx);
LUA_API void (lua_rawseti) (lua_State *L, int idx, lua_Integer n);
LUA_API void (lua_rawsetp) (lua_State *L, int idx, const void *p);
LUA_API int (lua_setmetatable) (lua_State *L, int objindex);
LUA_API int (lua_setiuservalue) (lua_State *L, int idx, int n);
LUA_API void (lua_setglobal)(lua_State *L, const char *name);
LUA_API void (lua_settable)(lua_State *L, int idx);
LUA_API void (lua_setfield)(lua_State *L, int idx, const char *k);
LUA_API void (lua_seti)(lua_State *L, int idx, lua_Integer n);
LUA_API void (lua_rawset)(lua_State *L, int idx);
LUA_API void (lua_rawseti)(lua_State *L, int idx, lua_Integer n);
LUA_API void (lua_rawsetp)(lua_State *L, int idx, const void *p);
LUA_API int (lua_setmetatable)(lua_State *L, int objindex);
LUA_API int (lua_setiuservalue)(lua_State *L, int idx, int n);
/*
** 'load' and 'call' functions (load and run Lua code)
*/
LUA_API void (lua_callk) (lua_State *L, int nargs, int nresults,
lua_KContext ctx, lua_KFunction k);
LUA_API void (lua_callk)(lua_State *L, int nargs, int nresults,
lua_KContext ctx, lua_KFunction k);
#define lua_call(L,n,r) lua_callk(L, (n), (r), 0, NULL)
LUA_API int (lua_pcallk) (lua_State *L, int nargs, int nresults, int errfunc,
lua_KContext ctx, lua_KFunction k);
LUA_API int (lua_pcallk)(lua_State *L, int nargs, int nresults, int errfunc,
lua_KContext ctx, lua_KFunction k);
#define lua_pcall(L,n,r,f) lua_pcallk(L, (n), (r), (f), 0, NULL)
LUA_API int (lua_load) (lua_State *L, lua_Reader reader, void *dt,
const char *chunkname, const char *mode);
LUA_API int (lua_load)(lua_State *L, lua_Reader reader, void *dt,
const char *chunkname, const char *mode);
LUA_API int (lua_dump) (lua_State *L, lua_Writer writer, void *data, int strip);
LUA_API int (lua_dump)(lua_State *L, lua_Writer writer, void *data, int strip);
/*
** coroutine functions
*/
LUA_API int (lua_yieldk) (lua_State *L, int nresults, lua_KContext ctx,
lua_KFunction k);
LUA_API int (lua_resume) (lua_State *L, lua_State *from, int narg,
int *nres);
LUA_API int (lua_status) (lua_State *L);
LUA_API int (lua_isyieldable) (lua_State *L);
LUA_API int (lua_yieldk)(lua_State *L, int nresults, lua_KContext ctx,
lua_KFunction k);
LUA_API int (lua_resume)(lua_State *L, lua_State *from, int narg,
int *nres);
LUA_API int (lua_status)(lua_State *L);
LUA_API int (lua_isyieldable)(lua_State *L);
#define lua_yield(L,n) lua_yieldk(L, (n), 0, NULL)
@ -319,8 +319,8 @@ LUA_API int (lua_isyieldable) (lua_State *L);
/*
** Warning-related functions
*/
LUA_API void (lua_setwarnf) (lua_State *L, lua_WarnFunction f, void *ud);
LUA_API void (lua_warning) (lua_State *L, const char *msg, int tocont);
LUA_API void (lua_setwarnf)(lua_State *L, lua_WarnFunction f, void *ud);
LUA_API void (lua_warning)(lua_State *L, const char *msg, int tocont);
/*
@ -339,27 +339,27 @@ LUA_API void (lua_warning) (lua_State *L, const char *msg, int tocont);
#define LUA_GCGEN 10
#define LUA_GCINC 11
LUA_API int (lua_gc) (lua_State *L, int what, ...);
LUA_API int (lua_gc)(lua_State *L, int what, ...);
/*
** miscellaneous functions
*/
LUA_API int (lua_error) (lua_State *L);
LUA_API int (lua_error)(lua_State *L);
LUA_API int (lua_next) (lua_State *L, int idx);
LUA_API int (lua_next)(lua_State *L, int idx);
LUA_API void (lua_concat) (lua_State *L, int n);
LUA_API void (lua_len) (lua_State *L, int idx);
LUA_API void (lua_concat)(lua_State *L, int n);
LUA_API void (lua_len)(lua_State *L, int idx);
LUA_API size_t (lua_stringtonumber) (lua_State *L, const char *s);
LUA_API size_t (lua_stringtonumber)(lua_State *L, const char *s);
LUA_API lua_Alloc (lua_getallocf) (lua_State *L, void **ud);
LUA_API void (lua_setallocf) (lua_State *L, lua_Alloc f, void *ud);
LUA_API lua_Alloc(lua_getallocf)(lua_State *L, void **ud);
LUA_API void (lua_setallocf)(lua_State *L, lua_Alloc f, void *ud);
LUA_API void (lua_toclose) (lua_State *L, int idx);
LUA_API void (lua_closeslot) (lua_State *L, int idx);
LUA_API void (lua_toclose)(lua_State *L, int idx);
LUA_API void (lua_closeslot)(lua_State *L, int idx);
/*
@ -454,43 +454,43 @@ LUA_API void (lua_closeslot) (lua_State *L, int idx);
#define LUA_MASKCOUNT (1 << LUA_HOOKCOUNT)
LUA_API int (lua_getstack) (lua_State *L, int level, lua_Debug *ar);
LUA_API int (lua_getinfo) (lua_State *L, const char *what, lua_Debug *ar);
LUA_API const char *(lua_getlocal) (lua_State *L, const lua_Debug *ar, int n);
LUA_API const char *(lua_setlocal) (lua_State *L, const lua_Debug *ar, int n);
LUA_API const char *(lua_getupvalue) (lua_State *L, int funcindex, int n);
LUA_API const char *(lua_setupvalue) (lua_State *L, int funcindex, int n);
LUA_API int (lua_getstack)(lua_State *L, int level, lua_Debug *ar);
LUA_API int (lua_getinfo)(lua_State *L, const char *what, lua_Debug *ar);
LUA_API const char *(lua_getlocal)(lua_State *L, const lua_Debug *ar, int n);
LUA_API const char *(lua_setlocal)(lua_State *L, const lua_Debug *ar, int n);
LUA_API const char *(lua_getupvalue)(lua_State *L, int funcindex, int n);
LUA_API const char *(lua_setupvalue)(lua_State *L, int funcindex, int n);
LUA_API void *(lua_upvalueid) (lua_State *L, int fidx, int n);
LUA_API void (lua_upvaluejoin) (lua_State *L, int fidx1, int n1,
int fidx2, int n2);
LUA_API void *(lua_upvalueid)(lua_State *L, int fidx, int n);
LUA_API void (lua_upvaluejoin)(lua_State *L, int fidx1, int n1,
int fidx2, int n2);
LUA_API void (lua_sethook) (lua_State *L, lua_Hook func, int mask, int count);
LUA_API lua_Hook (lua_gethook) (lua_State *L);
LUA_API int (lua_gethookmask) (lua_State *L);
LUA_API int (lua_gethookcount) (lua_State *L);
LUA_API void (lua_sethook)(lua_State *L, lua_Hook func, int mask, int count);
LUA_API lua_Hook(lua_gethook)(lua_State *L);
LUA_API int (lua_gethookmask)(lua_State *L);
LUA_API int (lua_gethookcount)(lua_State *L);
LUA_API int (lua_setcstacklimit) (lua_State *L, unsigned int limit);
LUA_API int (lua_setcstacklimit)(lua_State *L, unsigned int limit);
struct lua_Debug {
int event;
const char *name; /* (n) */
const char *namewhat; /* (n) 'global', 'local', 'field', 'method' */
const char *what; /* (S) 'Lua', 'C', 'main', 'tail' */
const char *source; /* (S) */
size_t srclen; /* (S) */
int currentline; /* (l) */
int linedefined; /* (S) */
int lastlinedefined; /* (S) */
unsigned char nups; /* (u) number of upvalues */
unsigned char nparams;/* (u) number of parameters */
char isvararg; /* (u) */
char istailcall; /* (t) */
unsigned short ftransfer; /* (r) index of first value transferred */
unsigned short ntransfer; /* (r) number of transferred values */
char short_src[LUA_IDSIZE]; /* (S) */
/* private part */
struct CallInfo *i_ci; /* active function */
int event;
const char *name; /* (n) */
const char *namewhat; /* (n) 'global', 'local', 'field', 'method' */
const char *what; /* (S) 'Lua', 'C', 'main', 'tail' */
const char *source; /* (S) */
size_t srclen; /* (S) */
int currentline; /* (l) */
int linedefined; /* (S) */
int lastlinedefined; /* (S) */
unsigned char nups; /* (u) number of upvalues */
unsigned char nparams;/* (u) number of parameters */
char isvararg; /* (u) */
char istailcall; /* (t) */
unsigned short ftransfer; /* (r) index of first value transferred */
unsigned short ntransfer; /* (r) number of transferred values */
char short_src[LUA_IDSIZE]; /* (S) */
/* private part */
struct CallInfo *i_ci; /* active function */
};
/* }====================================================================== */

File diff suppressed because it is too large Load diff

View file

@ -570,7 +570,7 @@
#else /* }{ */
#error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \
or '-DLUA_C89_NUMBERS' (see file 'luaconf.h' for details)"
or '-DLUA_C89_NUMBERS'(see file 'luaconf.h' for details)"
#endif /* } */

View file

@ -15,38 +15,38 @@
#define LUA_VERSUFFIX "_" LUA_VERSION_MAJOR "_" LUA_VERSION_MINOR
LUAMOD_API int (luaopen_base) (lua_State *L);
LUAMOD_API int (luaopen_base)(lua_State *L);
#define LUA_COLIBNAME "coroutine"
LUAMOD_API int (luaopen_coroutine) (lua_State *L);
LUAMOD_API int (luaopen_coroutine)(lua_State *L);
#define LUA_TABLIBNAME "table"
LUAMOD_API int (luaopen_table) (lua_State *L);
LUAMOD_API int (luaopen_table)(lua_State *L);
#define LUA_IOLIBNAME "io"
LUAMOD_API int (luaopen_io) (lua_State *L);
LUAMOD_API int (luaopen_io)(lua_State *L);
#define LUA_OSLIBNAME "os"
LUAMOD_API int (luaopen_os) (lua_State *L);
LUAMOD_API int (luaopen_os)(lua_State *L);
#define LUA_STRLIBNAME "string"
LUAMOD_API int (luaopen_string) (lua_State *L);
LUAMOD_API int (luaopen_string)(lua_State *L);
#define LUA_UTF8LIBNAME "utf8"
LUAMOD_API int (luaopen_utf8) (lua_State *L);
LUAMOD_API int (luaopen_utf8)(lua_State *L);
#define LUA_MATHLIBNAME "math"
LUAMOD_API int (luaopen_math) (lua_State *L);
LUAMOD_API int (luaopen_math)(lua_State *L);
#define LUA_DBLIBNAME "debug"
LUAMOD_API int (luaopen_debug) (lua_State *L);
LUAMOD_API int (luaopen_debug)(lua_State *L);
#define LUA_LOADLIBNAME "package"
LUAMOD_API int (luaopen_package) (lua_State *L);
LUAMOD_API int (luaopen_package)(lua_State *L);
/* open all previous libraries */
LUALIB_API void (luaL_openlibs) (lua_State *L);
LUALIB_API void (luaL_openlibs)(lua_State *L);
#endif

View file

@ -31,15 +31,15 @@
typedef struct {
lua_State *L;
ZIO *Z;
const char *name;
lua_State *L;
ZIO *Z;
const char *name;
} LoadState;
static l_noret error (LoadState *S, const char *why) {
luaO_pushfstring(S->L, "%s: bad binary format (%s)", S->name, why);
luaD_throw(S->L, LUA_ERRSYNTAX);
static l_noret error(LoadState *S, const char *why) {
luaO_pushfstring(S->L, "%s: bad binary format (%s)", S->name, why);
luaD_throw(S->L, LUA_ERRSYNTAX);
}
@ -49,157 +49,157 @@ static l_noret error (LoadState *S, const char *why) {
*/
#define loadVector(S,b,n) loadBlock(S,b,(n)*sizeof((b)[0]))
static void loadBlock (LoadState *S, void *b, size_t size) {
if (luaZ_read(S->Z, b, size) != 0)
error(S, "truncated chunk");
static void loadBlock(LoadState *S, void *b, size_t size) {
if (luaZ_read(S->Z, b, size) != 0)
error(S, "truncated chunk");
}
#define loadVar(S,x) loadVector(S,&x,1)
static lu_byte loadByte (LoadState *S) {
int b = zgetc(S->Z);
if (b == EOZ)
error(S, "truncated chunk");
return cast_byte(b);
static lu_byte loadByte(LoadState *S) {
int b = zgetc(S->Z);
if (b == EOZ)
error(S, "truncated chunk");
return cast_byte(b);
}
static size_t loadUnsigned (LoadState *S, size_t limit) {
size_t x = 0;
int b;
limit >>= 7;
do {
b = loadByte(S);
if (x >= limit)
error(S, "integer overflow");
x = (x << 7) | (b & 0x7f);
} while ((b & 0x80) == 0);
return x;
static size_t loadUnsigned(LoadState *S, size_t limit) {
size_t x = 0;
int b;
limit >>= 7;
do {
b = loadByte(S);
if (x >= limit)
error(S, "integer overflow");
x = (x << 7) | (b & 0x7f);
} while ((b & 0x80) == 0);
return x;
}
static size_t loadSize (LoadState *S) {
return loadUnsigned(S, MAX_SIZET);
static size_t loadSize(LoadState *S) {
return loadUnsigned(S, MAX_SIZET);
}
static int loadInt (LoadState *S) {
return cast_int(loadUnsigned(S, INT_MAX));
static int loadInt(LoadState *S) {
return cast_int(loadUnsigned(S, INT_MAX));
}
static lua_Number loadNumber (LoadState *S) {
lua_Number x;
loadVar(S, x);
return x;
static lua_Number loadNumber(LoadState *S) {
lua_Number x;
loadVar(S, x);
return x;
}
static lua_Integer loadInteger (LoadState *S) {
lua_Integer x;
loadVar(S, x);
return x;
static lua_Integer loadInteger(LoadState *S) {
lua_Integer x;
loadVar(S, x);
return x;
}
/*
** Load a nullable string into prototype 'p'.
*/
static TString *loadStringN (LoadState *S, Proto *p) {
lua_State *L = S->L;
TString *ts;
size_t size = loadSize(S);
if (size == 0) /* no string? */
return NULL;
else if (--size <= LUAI_MAXSHORTLEN) { /* short string? */
char buff[LUAI_MAXSHORTLEN];
loadVector(S, buff, size); /* load string into buffer */
ts = luaS_newlstr(L, buff, size); /* create string */
}
else { /* long string */
ts = luaS_createlngstrobj(L, size); /* create string */
setsvalue2s(L, L->top.p, ts); /* anchor it ('loadVector' can GC) */
luaD_inctop(L);
loadVector(S, getlngstr(ts), size); /* load directly in final place */
L->top.p--; /* pop string */
}
luaC_objbarrier(L, p, ts);
return ts;
static TString *loadStringN(LoadState *S, Proto *p) {
lua_State *L = S->L;
TString *ts;
size_t size = loadSize(S);
if (size == 0) /* no string? */
return NULL;
else if (--size <= LUAI_MAXSHORTLEN) { /* short string? */
char buff[LUAI_MAXSHORTLEN];
loadVector(S, buff, size); /* load string into buffer */
ts = luaS_newlstr(L, buff, size); /* create string */
} else { /* long string */
ts = luaS_createlngstrobj(L, size); /* create string */
setsvalue2s(L, L->top.p, ts); /* anchor it ('loadVector' can GC) */
luaD_inctop(L);
loadVector(S, getlngstr(ts), size); /* load directly in final place */
L->top.p--; /* pop string */
}
luaC_objbarrier(L, p, ts);
return ts;
}
/*
** Load a non-nullable string into prototype 'p'.
*/
static TString *loadString (LoadState *S, Proto *p) {
TString *st = loadStringN(S, p);
if (st == NULL)
error(S, "bad format for constant string");
return st;
static TString *loadString(LoadState *S, Proto *p) {
TString *st = loadStringN(S, p);
if (st == NULL)
error(S, "bad format for constant string");
return st;
}
static void loadCode (LoadState *S, Proto *f) {
int n = loadInt(S);
f->code = luaM_newvectorchecked(S->L, n, Instruction);
f->sizecode = n;
loadVector(S, f->code, n);
static void loadCode(LoadState *S, Proto *f) {
int n = loadInt(S);
f->code = luaM_newvectorchecked(S->L, n, Instruction);
f->sizecode = n;
loadVector(S, f->code, n);
}
static void loadFunction(LoadState *S, Proto *f, TString *psource);
static void loadConstants (LoadState *S, Proto *f) {
int i;
int n = loadInt(S);
f->k = luaM_newvectorchecked(S->L, n, TValue);
f->sizek = n;
for (i = 0; i < n; i++)
setnilvalue(&f->k[i]);
for (i = 0; i < n; i++) {
TValue *o = &f->k[i];
int t = loadByte(S);
switch (t) {
case LUA_VNIL:
setnilvalue(o);
break;
case LUA_VFALSE:
setbfvalue(o);
break;
case LUA_VTRUE:
setbtvalue(o);
break;
case LUA_VNUMFLT:
setfltvalue(o, loadNumber(S));
break;
case LUA_VNUMINT:
setivalue(o, loadInteger(S));
break;
case LUA_VSHRSTR:
case LUA_VLNGSTR:
setsvalue2n(S->L, o, loadString(S, f));
break;
default: lua_assert(0);
static void loadConstants(LoadState *S, Proto *f) {
int i;
int n = loadInt(S);
f->k = luaM_newvectorchecked(S->L, n, TValue);
f->sizek = n;
for (i = 0; i < n; i++)
setnilvalue(&f->k[i]);
for (i = 0; i < n; i++) {
TValue *o = &f->k[i];
int t = loadByte(S);
switch (t) {
case LUA_VNIL:
setnilvalue(o);
break;
case LUA_VFALSE:
setbfvalue(o);
break;
case LUA_VTRUE:
setbtvalue(o);
break;
case LUA_VNUMFLT:
setfltvalue(o, loadNumber(S));
break;
case LUA_VNUMINT:
setivalue(o, loadInteger(S));
break;
case LUA_VSHRSTR:
case LUA_VLNGSTR:
setsvalue2n(S->L, o, loadString(S, f));
break;
default:
lua_assert(0);
}
}
}
}
static void loadProtos (LoadState *S, Proto *f) {
int i;
int n = loadInt(S);
f->p = luaM_newvectorchecked(S->L, n, Proto *);
f->sizep = n;
for (i = 0; i < n; i++)
f->p[i] = NULL;
for (i = 0; i < n; i++) {
f->p[i] = luaF_newproto(S->L);
luaC_objbarrier(S->L, f, f->p[i]);
loadFunction(S, f->p[i], f->source);
}
static void loadProtos(LoadState *S, Proto *f) {
int i;
int n = loadInt(S);
f->p = luaM_newvectorchecked(S->L, n, Proto *);
f->sizep = n;
for (i = 0; i < n; i++)
f->p[i] = NULL;
for (i = 0; i < n; i++) {
f->p[i] = luaF_newproto(S->L);
luaC_objbarrier(S->L, f, f->p[i]);
loadFunction(S, f->p[i], f->source);
}
}
@ -209,101 +209,101 @@ static void loadProtos (LoadState *S, Proto *f) {
** the creation of the error message can call an emergency collection;
** in that case all prototypes must be consistent for the GC.
*/
static void loadUpvalues (LoadState *S, Proto *f) {
int i, n;
n = loadInt(S);
f->upvalues = luaM_newvectorchecked(S->L, n, Upvaldesc);
f->sizeupvalues = n;
for (i = 0; i < n; i++) /* make array valid for GC */
f->upvalues[i].name = NULL;
for (i = 0; i < n; i++) { /* following calls can raise errors */
f->upvalues[i].instack = loadByte(S);
f->upvalues[i].idx = loadByte(S);
f->upvalues[i].kind = loadByte(S);
}
static void loadUpvalues(LoadState *S, Proto *f) {
int i, n;
n = loadInt(S);
f->upvalues = luaM_newvectorchecked(S->L, n, Upvaldesc);
f->sizeupvalues = n;
for (i = 0; i < n; i++) /* make array valid for GC */
f->upvalues[i].name = NULL;
for (i = 0; i < n; i++) { /* following calls can raise errors */
f->upvalues[i].instack = loadByte(S);
f->upvalues[i].idx = loadByte(S);
f->upvalues[i].kind = loadByte(S);
}
}
static void loadDebug (LoadState *S, Proto *f) {
int i, n;
n = loadInt(S);
f->lineinfo = luaM_newvectorchecked(S->L, n, ls_byte);
f->sizelineinfo = n;
loadVector(S, f->lineinfo, n);
n = loadInt(S);
f->abslineinfo = luaM_newvectorchecked(S->L, n, AbsLineInfo);
f->sizeabslineinfo = n;
for (i = 0; i < n; i++) {
f->abslineinfo[i].pc = loadInt(S);
f->abslineinfo[i].line = loadInt(S);
}
n = loadInt(S);
f->locvars = luaM_newvectorchecked(S->L, n, LocVar);
f->sizelocvars = n;
for (i = 0; i < n; i++)
f->locvars[i].varname = NULL;
for (i = 0; i < n; i++) {
f->locvars[i].varname = loadStringN(S, f);
f->locvars[i].startpc = loadInt(S);
f->locvars[i].endpc = loadInt(S);
}
n = loadInt(S);
if (n != 0) /* does it have debug information? */
n = f->sizeupvalues; /* must be this many */
for (i = 0; i < n; i++)
f->upvalues[i].name = loadStringN(S, f);
static void loadDebug(LoadState *S, Proto *f) {
int i, n;
n = loadInt(S);
f->lineinfo = luaM_newvectorchecked(S->L, n, ls_byte);
f->sizelineinfo = n;
loadVector(S, f->lineinfo, n);
n = loadInt(S);
f->abslineinfo = luaM_newvectorchecked(S->L, n, AbsLineInfo);
f->sizeabslineinfo = n;
for (i = 0; i < n; i++) {
f->abslineinfo[i].pc = loadInt(S);
f->abslineinfo[i].line = loadInt(S);
}
n = loadInt(S);
f->locvars = luaM_newvectorchecked(S->L, n, LocVar);
f->sizelocvars = n;
for (i = 0; i < n; i++)
f->locvars[i].varname = NULL;
for (i = 0; i < n; i++) {
f->locvars[i].varname = loadStringN(S, f);
f->locvars[i].startpc = loadInt(S);
f->locvars[i].endpc = loadInt(S);
}
n = loadInt(S);
if (n != 0) /* does it have debug information? */
n = f->sizeupvalues; /* must be this many */
for (i = 0; i < n; i++)
f->upvalues[i].name = loadStringN(S, f);
}
static void loadFunction (LoadState *S, Proto *f, TString *psource) {
f->source = loadStringN(S, f);
if (f->source == NULL) /* no source in dump? */
f->source = psource; /* reuse parent's source */
f->linedefined = loadInt(S);
f->lastlinedefined = loadInt(S);
f->numparams = loadByte(S);
f->is_vararg = loadByte(S);
f->maxstacksize = loadByte(S);
loadCode(S, f);
loadConstants(S, f);
loadUpvalues(S, f);
loadProtos(S, f);
loadDebug(S, f);
static void loadFunction(LoadState *S, Proto *f, TString *psource) {
f->source = loadStringN(S, f);
if (f->source == NULL) /* no source in dump? */
f->source = psource; /* reuse parent's source */
f->linedefined = loadInt(S);
f->lastlinedefined = loadInt(S);
f->numparams = loadByte(S);
f->is_vararg = loadByte(S);
f->maxstacksize = loadByte(S);
loadCode(S, f);
loadConstants(S, f);
loadUpvalues(S, f);
loadProtos(S, f);
loadDebug(S, f);
}
static void checkliteral (LoadState *S, const char *s, const char *msg) {
char buff[sizeof(LUA_SIGNATURE) + sizeof(LUAC_DATA)]; /* larger than both */
size_t len = strlen(s);
loadVector(S, buff, len);
if (memcmp(s, buff, len) != 0)
error(S, msg);
static void checkliteral(LoadState *S, const char *s, const char *msg) {
char buff[sizeof(LUA_SIGNATURE) + sizeof(LUAC_DATA)]; /* larger than both */
size_t len = strlen(s);
loadVector(S, buff, len);
if (memcmp(s, buff, len) != 0)
error(S, msg);
}
static void fchecksize (LoadState *S, size_t size, const char *tname) {
if (loadByte(S) != size)
error(S, luaO_pushfstring(S->L, "%s size mismatch", tname));
static void fchecksize(LoadState *S, size_t size, const char *tname) {
if (loadByte(S) != size)
error(S, luaO_pushfstring(S->L, "%s size mismatch", tname));
}
#define checksize(S,t) fchecksize(S,sizeof(t),#t)
static void checkHeader (LoadState *S) {
/* skip 1st char (already read and checked) */
checkliteral(S, &LUA_SIGNATURE[1], "not a binary chunk");
if (loadByte(S) != LUAC_VERSION)
error(S, "version mismatch");
if (loadByte(S) != LUAC_FORMAT)
error(S, "format mismatch");
checkliteral(S, LUAC_DATA, "corrupted chunk");
checksize(S, Instruction);
checksize(S, lua_Integer);
checksize(S, lua_Number);
if (loadInteger(S) != LUAC_INT)
error(S, "integer format mismatch");
if (loadNumber(S) != LUAC_NUM)
error(S, "float format mismatch");
static void checkHeader(LoadState *S) {
/* skip 1st char (already read and checked) */
checkliteral(S, &LUA_SIGNATURE[1], "not a binary chunk");
if (loadByte(S) != LUAC_VERSION)
error(S, "version mismatch");
if (loadByte(S) != LUAC_FORMAT)
error(S, "format mismatch");
checkliteral(S, LUAC_DATA, "corrupted chunk");
checksize(S, Instruction);
checksize(S, lua_Integer);
checksize(S, lua_Number);
if (loadInteger(S) != LUAC_INT)
error(S, "integer format mismatch");
if (loadNumber(S) != LUAC_NUM)
error(S, "float format mismatch");
}
@ -311,25 +311,25 @@ static void checkHeader (LoadState *S) {
** Load precompiled chunk.
*/
LClosure *luaU_undump(lua_State *L, ZIO *Z, const char *name) {
LoadState S;
LClosure *cl;
if (*name == '@' || *name == '=')
S.name = name + 1;
else if (*name == LUA_SIGNATURE[0])
S.name = "binary string";
else
S.name = name;
S.L = L;
S.Z = Z;
checkHeader(&S);
cl = luaF_newLclosure(L, loadByte(&S));
setclLvalue2s(L, L->top.p, cl);
luaD_inctop(L);
cl->p = luaF_newproto(L);
luaC_objbarrier(L, cl, cl->p);
loadFunction(&S, cl->p, NULL);
lua_assert(cl->nupvalues == cl->p->sizeupvalues);
luai_verifycode(L, cl->p);
return cl;
LoadState S;
LClosure *cl;
if (*name == '@' || *name == '=')
S.name = name + 1;
else if (*name == LUA_SIGNATURE[0])
S.name = "binary string";
else
S.name = name;
S.L = L;
S.Z = Z;
checkHeader(&S);
cl = luaF_newLclosure(L, loadByte(&S));
setclLvalue2s(L, L->top.p, cl);
luaD_inctop(L);
cl->p = luaF_newproto(L);
luaC_objbarrier(L, cl, cl->p);
loadFunction(&S, cl->p, NULL);
lua_assert(cl->nupvalues == cl->p->sizeupvalues);
luai_verifycode(L, cl->p);
return cl;
}

View file

@ -26,10 +26,10 @@
#define LUAC_FORMAT 0 /* this is the official format */
/* load one chunk; from lundump.c */
LUAI_FUNC LClosure* luaU_undump (lua_State* L, ZIO* Z, const char* name);
LUAI_FUNC LClosure *luaU_undump(lua_State *L, ZIO *Z, const char *name);
/* dump one chunk; from ldump.c */
LUAI_FUNC int luaU_dump (lua_State* L, const Proto* f, lua_Writer w,
void* data, int strip);
LUAI_FUNC int luaU_dump(lua_State *L, const Proto *f, lua_Writer w,
void *data, int strip);
#endif

View file

@ -44,10 +44,10 @@ typedef unsigned long utfint;
/* from strlib */
/* translate a relative string position: negative means back from end */
static lua_Integer u_posrelat (lua_Integer pos, size_t len) {
if (pos >= 0) return pos;
else if (0u - (size_t)pos > len) return 0;
else return (lua_Integer)len + pos + 1;
static lua_Integer u_posrelat(lua_Integer pos, size_t len) {
if (pos >= 0) return pos;
else if (0u - (size_t)pos > len) return 0;
else return (lua_Integer)len + pos + 1;
}
@ -58,33 +58,33 @@ static lua_Integer u_posrelat (lua_Integer pos, size_t len) {
** entry forces an error for non-ascii bytes with no continuation
** bytes (count == 0).
*/
static const char *utf8_decode (const char *s, utfint *val, int strict) {
static const utfint limits[] =
{~(utfint)0, 0x80, 0x800, 0x10000u, 0x200000u, 0x4000000u};
unsigned int c = (unsigned char)s[0];
utfint res = 0; /* final result */
if (c < 0x80) /* ascii? */
res = c;
else {
int count = 0; /* to count number of continuation bytes */
for (; c & 0x40; c <<= 1) { /* while it needs continuation bytes... */
unsigned int cc = (unsigned char)s[++count]; /* read next byte */
if (!iscont(cc)) /* not a continuation byte? */
return NULL; /* invalid byte sequence */
res = (res << 6) | (cc & 0x3F); /* add lower 6 bits from cont. byte */
static const char *utf8_decode(const char *s, utfint *val, int strict) {
static const utfint limits[] =
{~(utfint)0, 0x80, 0x800, 0x10000u, 0x200000u, 0x4000000u};
unsigned int c = (unsigned char)s[0];
utfint res = 0; /* final result */
if (c < 0x80) /* ascii? */
res = c;
else {
int count = 0; /* to count number of continuation bytes */
for (; c & 0x40; c <<= 1) { /* while it needs continuation bytes... */
unsigned int cc = (unsigned char)s[++count]; /* read next byte */
if (!iscont(cc)) /* not a continuation byte? */
return NULL; /* invalid byte sequence */
res = (res << 6) | (cc & 0x3F); /* add lower 6 bits from cont. byte */
}
res |= ((utfint)(c & 0x7F) << (count * 5)); /* add first byte */
if (count > 5 || res > MAXUTF || res < limits[count])
return NULL; /* invalid byte sequence */
s += count; /* skip continuation bytes read */
}
res |= ((utfint)(c & 0x7F) << (count * 5)); /* add first byte */
if (count > 5 || res > MAXUTF || res < limits[count])
return NULL; /* invalid byte sequence */
s += count; /* skip continuation bytes read */
}
if (strict) {
/* check for invalid code points; too large or surrogates */
if (res > MAXUNICODE || (0xD800u <= res && res <= 0xDFFFu))
return NULL;
}
if (val) *val = res;
return s + 1; /* +1 to include first byte */
if (strict) {
/* check for invalid code points; too large or surrogates */
if (res > MAXUNICODE || (0xD800u <= res && res <= 0xDFFFu))
return NULL;
}
if (val) *val = res;
return s + 1; /* +1 to include first byte */
}
@ -93,29 +93,29 @@ static const char *utf8_decode (const char *s, utfint *val, int strict) {
** start in the range [i,j], or nil + current position if 's' is not
** well formed in that interval
*/
static int utflen (lua_State *L) {
lua_Integer n = 0; /* counter for the number of characters */
size_t len; /* string length in bytes */
const char *s = luaL_checklstring(L, 1, &len);
lua_Integer posi = u_posrelat(luaL_optinteger(L, 2, 1), len);
lua_Integer posj = u_posrelat(luaL_optinteger(L, 3, -1), len);
int lax = lua_toboolean(L, 4);
luaL_argcheck(L, 1 <= posi && --posi <= (lua_Integer)len, 2,
"initial position out of bounds");
luaL_argcheck(L, --posj < (lua_Integer)len, 3,
"final position out of bounds");
while (posi <= posj) {
const char *s1 = utf8_decode(s + posi, NULL, !lax);
if (s1 == NULL) { /* conversion error? */
luaL_pushfail(L); /* return fail ... */
lua_pushinteger(L, posi + 1); /* ... and current position */
return 2;
static int utflen(lua_State *L) {
lua_Integer n = 0; /* counter for the number of characters */
size_t len; /* string length in bytes */
const char *s = luaL_checklstring(L, 1, &len);
lua_Integer posi = u_posrelat(luaL_optinteger(L, 2, 1), len);
lua_Integer posj = u_posrelat(luaL_optinteger(L, 3, -1), len);
int lax = lua_toboolean(L, 4);
luaL_argcheck(L, 1 <= posi && --posi <= (lua_Integer)len, 2,
"initial position out of bounds");
luaL_argcheck(L, --posj < (lua_Integer)len, 3,
"final position out of bounds");
while (posi <= posj) {
const char *s1 = utf8_decode(s + posi, NULL, !lax);
if (s1 == NULL) { /* conversion error? */
luaL_pushfail(L); /* return fail ... */
lua_pushinteger(L, posi + 1); /* ... and current position */
return 2;
}
posi = s1 - s;
n++;
}
posi = s1 - s;
n++;
}
lua_pushinteger(L, n);
return 1;
lua_pushinteger(L, n);
return 1;
}
@ -123,60 +123,60 @@ static int utflen (lua_State *L) {
** codepoint(s, [i, [j [, lax]]]) -> returns codepoints for all
** characters that start in the range [i,j]
*/
static int codepoint (lua_State *L) {
size_t len;
const char *s = luaL_checklstring(L, 1, &len);
lua_Integer posi = u_posrelat(luaL_optinteger(L, 2, 1), len);
lua_Integer pose = u_posrelat(luaL_optinteger(L, 3, posi), len);
int lax = lua_toboolean(L, 4);
int n;
const char *se;
luaL_argcheck(L, posi >= 1, 2, "out of bounds");
luaL_argcheck(L, pose <= (lua_Integer)len, 3, "out of bounds");
if (posi > pose) return 0; /* empty interval; return no values */
if (pose - posi >= INT_MAX) /* (lua_Integer -> int) overflow? */
return luaL_error(L, "string slice too long");
n = (int)(pose - posi) + 1; /* upper bound for number of returns */
luaL_checkstack(L, n, "string slice too long");
n = 0; /* count the number of returns */
se = s + pose; /* string end */
for (s += posi - 1; s < se;) {
utfint code;
s = utf8_decode(s, &code, !lax);
if (s == NULL)
return luaL_error(L, MSGInvalid);
lua_pushinteger(L, code);
n++;
}
return n;
static int codepoint(lua_State *L) {
size_t len;
const char *s = luaL_checklstring(L, 1, &len);
lua_Integer posi = u_posrelat(luaL_optinteger(L, 2, 1), len);
lua_Integer pose = u_posrelat(luaL_optinteger(L, 3, posi), len);
int lax = lua_toboolean(L, 4);
int n;
const char *se;
luaL_argcheck(L, posi >= 1, 2, "out of bounds");
luaL_argcheck(L, pose <= (lua_Integer)len, 3, "out of bounds");
if (posi > pose) return 0; /* empty interval; return no values */
if (pose - posi >= INT_MAX) /* (lua_Integer -> int) overflow? */
return luaL_error(L, "string slice too long");
n = (int)(pose - posi) + 1; /* upper bound for number of returns */
luaL_checkstack(L, n, "string slice too long");
n = 0; /* count the number of returns */
se = s + pose; /* string end */
for (s += posi - 1; s < se;) {
utfint code;
s = utf8_decode(s, &code, !lax);
if (s == NULL)
return luaL_error(L, MSGInvalid);
lua_pushinteger(L, code);
n++;
}
return n;
}
static void pushutfchar (lua_State *L, int arg) {
lua_Unsigned code = (lua_Unsigned)luaL_checkinteger(L, arg);
luaL_argcheck(L, code <= MAXUTF, arg, "value out of range");
lua_pushfstring(L, "%U", (long)code);
static void pushutfchar(lua_State *L, int arg) {
lua_Unsigned code = (lua_Unsigned)luaL_checkinteger(L, arg);
luaL_argcheck(L, code <= MAXUTF, arg, "value out of range");
lua_pushfstring(L, "%U", (long)code);
}
/*
** utfchar(n1, n2, ...) -> char(n1)..char(n2)...
*/
static int utfchar (lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
if (n == 1) /* optimize common case of single char */
pushutfchar(L, 1);
else {
int i;
luaL_Buffer b;
luaL_buffinit(L, &b);
for (i = 1; i <= n; i++) {
pushutfchar(L, i);
luaL_addvalue(&b);
static int utfchar(lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
if (n == 1) /* optimize common case of single char */
pushutfchar(L, 1);
else {
int i;
luaL_Buffer b;
luaL_buffinit(L, &b);
for (i = 1; i <= n; i++) {
pushutfchar(L, i);
luaL_addvalue(&b);
}
luaL_pushresult(&b);
}
luaL_pushresult(&b);
}
return 1;
return 1;
}
@ -184,85 +184,83 @@ static int utfchar (lua_State *L) {
** offset(s, n, [i]) -> index where n-th character counting from
** position 'i' starts; 0 means character at 'i'.
*/
static int byteoffset (lua_State *L) {
size_t len;
const char *s = luaL_checklstring(L, 1, &len);
lua_Integer n = luaL_checkinteger(L, 2);
lua_Integer posi = (n >= 0) ? 1 : len + 1;
posi = u_posrelat(luaL_optinteger(L, 3, posi), len);
luaL_argcheck(L, 1 <= posi && --posi <= (lua_Integer)len, 3,
"position out of bounds");
if (n == 0) {
/* find beginning of current byte sequence */
while (posi > 0 && iscontp(s + posi)) posi--;
}
else {
if (iscontp(s + posi))
return luaL_error(L, "initial position is a continuation byte");
if (n < 0) {
while (n < 0 && posi > 0) { /* move back */
do { /* find beginning of previous character */
posi--;
} while (posi > 0 && iscontp(s + posi));
n++;
}
}
else {
n--; /* do not move for 1st character */
while (n > 0 && posi < (lua_Integer)len) {
do { /* find beginning of next character */
posi++;
} while (iscontp(s + posi)); /* (cannot pass final '\0') */
n--;
}
}
}
if (n == 0) /* did it find given character? */
lua_pushinteger(L, posi + 1);
else /* no such character */
luaL_pushfail(L);
return 1;
static int byteoffset(lua_State *L) {
size_t len;
const char *s = luaL_checklstring(L, 1, &len);
lua_Integer n = luaL_checkinteger(L, 2);
lua_Integer posi = (n >= 0) ? 1 : len + 1;
posi = u_posrelat(luaL_optinteger(L, 3, posi), len);
luaL_argcheck(L, 1 <= posi && --posi <= (lua_Integer)len, 3,
"position out of bounds");
if (n == 0) {
/* find beginning of current byte sequence */
while (posi > 0 && iscontp(s + posi)) posi--;
} else {
if (iscontp(s + posi))
return luaL_error(L, "initial position is a continuation byte");
if (n < 0) {
while (n < 0 && posi > 0) { /* move back */
do { /* find beginning of previous character */
posi--;
} while (posi > 0 && iscontp(s + posi));
n++;
}
} else {
n--; /* do not move for 1st character */
while (n > 0 && posi < (lua_Integer)len) {
do { /* find beginning of next character */
posi++;
} while (iscontp(s + posi)); /* (cannot pass final '\0') */
n--;
}
}
}
if (n == 0) /* did it find given character? */
lua_pushinteger(L, posi + 1);
else /* no such character */
luaL_pushfail(L);
return 1;
}
static int iter_aux (lua_State *L, int strict) {
size_t len;
const char *s = luaL_checklstring(L, 1, &len);
lua_Unsigned n = (lua_Unsigned)lua_tointeger(L, 2);
if (n < len) {
while (iscontp(s + n)) n++; /* go to next character */
}
if (n >= len) /* (also handles original 'n' being negative) */
return 0; /* no more codepoints */
else {
utfint code;
const char *next = utf8_decode(s + n, &code, strict);
if (next == NULL || iscontp(next))
return luaL_error(L, MSGInvalid);
lua_pushinteger(L, n + 1);
lua_pushinteger(L, code);
return 2;
}
static int iter_aux(lua_State *L, int strict) {
size_t len;
const char *s = luaL_checklstring(L, 1, &len);
lua_Unsigned n = (lua_Unsigned)lua_tointeger(L, 2);
if (n < len) {
while (iscontp(s + n)) n++; /* go to next character */
}
if (n >= len) /* (also handles original 'n' being negative) */
return 0; /* no more codepoints */
else {
utfint code;
const char *next = utf8_decode(s + n, &code, strict);
if (next == NULL || iscontp(next))
return luaL_error(L, MSGInvalid);
lua_pushinteger(L, n + 1);
lua_pushinteger(L, code);
return 2;
}
}
static int iter_auxstrict (lua_State *L) {
return iter_aux(L, 1);
static int iter_auxstrict(lua_State *L) {
return iter_aux(L, 1);
}
static int iter_auxlax (lua_State *L) {
return iter_aux(L, 0);
static int iter_auxlax(lua_State *L) {
return iter_aux(L, 0);
}
static int iter_codes (lua_State *L) {
int lax = lua_toboolean(L, 2);
const char *s = luaL_checkstring(L, 1);
luaL_argcheck(L, !iscontp(s), 1, MSGInvalid);
lua_pushcfunction(L, lax ? iter_auxlax : iter_auxstrict);
lua_pushvalue(L, 1);
lua_pushinteger(L, 0);
return 3;
static int iter_codes(lua_State *L) {
int lax = lua_toboolean(L, 2);
const char *s = luaL_checkstring(L, 1);
luaL_argcheck(L, !iscontp(s), 1, MSGInvalid);
lua_pushcfunction(L, lax ? iter_auxlax : iter_auxstrict);
lua_pushvalue(L, 1);
lua_pushinteger(L, 0);
return 3;
}
@ -271,21 +269,21 @@ static int iter_codes (lua_State *L) {
static const luaL_Reg funcs[] = {
{"offset", byteoffset},
{"codepoint", codepoint},
{"char", utfchar},
{"len", utflen},
{"codes", iter_codes},
/* placeholders */
{"charpattern", NULL},
{NULL, NULL}
{"offset", byteoffset},
{"codepoint", codepoint},
{"char", utfchar},
{"len", utflen},
{"codes", iter_codes},
/* placeholders */
{"charpattern", NULL},
{NULL, NULL}
};
LUAMOD_API int luaopen_utf8 (lua_State *L) {
luaL_newlib(L, funcs);
lua_pushlstring(L, UTF8PATT, sizeof(UTF8PATT)/sizeof(char) - 1);
lua_setfield(L, -2, "charpattern");
return 1;
LUAMOD_API int luaopen_utf8(lua_State *L) {
luaL_newlib(L, funcs);
lua_pushlstring(L, UTF8PATT, sizeof(UTF8PATT) / sizeof(char) - 1);
lua_setfield(L, -2, "charpattern");
return 1;
}

File diff suppressed because it is too large Load diff

View file

@ -41,9 +41,9 @@
** Rounding modes for float->integer coercion
*/
typedef enum {
F2Ieq, /* no rounding; accepts only integral values */
F2Ifloor, /* takes the floor of the number */
F2Iceil /* takes the ceil of the number */
F2Ieq, /* no rounding; accepts only integral values */
F2Ifloor, /* takes the floor of the number */
F2Iceil /* takes the ceil of the number */
} F2Imod;
@ -117,25 +117,25 @@ typedef enum {
LUAI_FUNC int luaV_equalobj (lua_State *L, const TValue *t1, const TValue *t2);
LUAI_FUNC int luaV_lessthan (lua_State *L, const TValue *l, const TValue *r);
LUAI_FUNC int luaV_lessequal (lua_State *L, const TValue *l, const TValue *r);
LUAI_FUNC int luaV_tonumber_ (const TValue *obj, lua_Number *n);
LUAI_FUNC int luaV_tointeger (const TValue *obj, lua_Integer *p, F2Imod mode);
LUAI_FUNC int luaV_tointegerns (const TValue *obj, lua_Integer *p,
F2Imod mode);
LUAI_FUNC int luaV_flttointeger (lua_Number n, lua_Integer *p, F2Imod mode);
LUAI_FUNC void luaV_finishget (lua_State *L, const TValue *t, TValue *key,
StkId val, const TValue *slot);
LUAI_FUNC void luaV_finishset (lua_State *L, const TValue *t, TValue *key,
TValue *val, const TValue *slot);
LUAI_FUNC void luaV_finishOp (lua_State *L);
LUAI_FUNC void luaV_execute (lua_State *L, CallInfo *ci);
LUAI_FUNC void luaV_concat (lua_State *L, int total);
LUAI_FUNC lua_Integer luaV_idiv (lua_State *L, lua_Integer x, lua_Integer y);
LUAI_FUNC lua_Integer luaV_mod (lua_State *L, lua_Integer x, lua_Integer y);
LUAI_FUNC lua_Number luaV_modf (lua_State *L, lua_Number x, lua_Number y);
LUAI_FUNC lua_Integer luaV_shiftl (lua_Integer x, lua_Integer y);
LUAI_FUNC void luaV_objlen (lua_State *L, StkId ra, const TValue *rb);
LUAI_FUNC int luaV_equalobj(lua_State *L, const TValue *t1, const TValue *t2);
LUAI_FUNC int luaV_lessthan(lua_State *L, const TValue *l, const TValue *r);
LUAI_FUNC int luaV_lessequal(lua_State *L, const TValue *l, const TValue *r);
LUAI_FUNC int luaV_tonumber_(const TValue *obj, lua_Number *n);
LUAI_FUNC int luaV_tointeger(const TValue *obj, lua_Integer *p, F2Imod mode);
LUAI_FUNC int luaV_tointegerns(const TValue *obj, lua_Integer *p,
F2Imod mode);
LUAI_FUNC int luaV_flttointeger(lua_Number n, lua_Integer *p, F2Imod mode);
LUAI_FUNC void luaV_finishget(lua_State *L, const TValue *t, TValue *key,
StkId val, const TValue *slot);
LUAI_FUNC void luaV_finishset(lua_State *L, const TValue *t, TValue *key,
TValue *val, const TValue *slot);
LUAI_FUNC void luaV_finishOp(lua_State *L);
LUAI_FUNC void luaV_execute(lua_State *L, CallInfo *ci);
LUAI_FUNC void luaV_concat(lua_State *L, int total);
LUAI_FUNC lua_Integer luaV_idiv(lua_State *L, lua_Integer x, lua_Integer y);
LUAI_FUNC lua_Integer luaV_mod(lua_State *L, lua_Integer x, lua_Integer y);
LUAI_FUNC lua_Number luaV_modf(lua_State *L, lua_Number x, lua_Number y);
LUAI_FUNC lua_Integer luaV_shiftl(lua_Integer x, lua_Integer y);
LUAI_FUNC void luaV_objlen(lua_State *L, StkId ra, const TValue *rb);
#endif

View file

@ -20,49 +20,49 @@
#include "lzio.h"
int luaZ_fill (ZIO *z) {
size_t size;
lua_State *L = z->L;
const char *buff;
lua_unlock(L);
buff = z->reader(L, z->data, &size);
lua_lock(L);
if (buff == NULL || size == 0)
return EOZ;
z->n = size - 1; /* discount char being returned */
z->p = buff;
return cast_uchar(*(z->p++));
int luaZ_fill(ZIO *z) {
size_t size;
lua_State *L = z->L;
const char *buff;
lua_unlock(L);
buff = z->reader(L, z->data, &size);
lua_lock(L);
if (buff == NULL || size == 0)
return EOZ;
z->n = size - 1; /* discount char being returned */
z->p = buff;
return cast_uchar(*(z->p++));
}
void luaZ_init (lua_State *L, ZIO *z, lua_Reader reader, void *data) {
z->L = L;
z->reader = reader;
z->data = data;
z->n = 0;
z->p = NULL;
void luaZ_init(lua_State *L, ZIO *z, lua_Reader reader, void *data) {
z->L = L;
z->reader = reader;
z->data = data;
z->n = 0;
z->p = NULL;
}
/* --------------------------------------------------------------- read --- */
size_t luaZ_read (ZIO *z, void *b, size_t n) {
while (n) {
size_t m;
if (z->n == 0) { /* no bytes in buffer? */
if (luaZ_fill(z) == EOZ) /* try to read more */
return n; /* no more input; return number of missing bytes */
else {
z->n++; /* luaZ_fill consumed first byte; put it back */
z->p--;
}
size_t luaZ_read(ZIO *z, void *b, size_t n) {
while (n) {
size_t m;
if (z->n == 0) { /* no bytes in buffer? */
if (luaZ_fill(z) == EOZ) /* try to read more */
return n; /* no more input; return number of missing bytes */
else {
z->n++; /* luaZ_fill consumed first byte; put it back */
z->p--;
}
}
m = (n <= z->n) ? n : z->n; /* min. between n and z->n */
memcpy(b, z->p, m);
z->n -= m;
z->p += m;
b = (char *)b + m;
n -= m;
}
m = (n <= z->n) ? n : z->n; /* min. between n and z->n */
memcpy(b, z->p, m);
z->n -= m;
z->p += m;
b = (char *)b + m;
n -= m;
}
return 0;
return 0;
}

View file

@ -21,9 +21,9 @@ typedef struct Zio ZIO;
typedef struct Mbuffer {
char *buffer;
size_t n;
size_t buffsize;
char *buffer;
size_t n;
size_t buffsize;
} Mbuffer;
#define luaZ_initbuffer(L, buff) ((buff)->buffer = NULL, (buff)->buffsize = 0)
@ -44,23 +44,23 @@ typedef struct Mbuffer {
#define luaZ_freebuffer(L, buff) luaZ_resizebuffer(L, buff, 0)
LUAI_FUNC void luaZ_init (lua_State *L, ZIO *z, lua_Reader reader,
void *data);
LUAI_FUNC size_t luaZ_read (ZIO* z, void *b, size_t n); /* read next n bytes */
LUAI_FUNC void luaZ_init(lua_State *L, ZIO *z, lua_Reader reader,
void *data);
LUAI_FUNC size_t luaZ_read(ZIO *z, void *b, size_t n); /* read next n bytes */
/* --------- Private Part ------------------ */
struct Zio {
size_t n; /* bytes still unread */
const char *p; /* current position in buffer */
lua_Reader reader; /* reader function */
void *data; /* additional data */
lua_State *L; /* Lua state (for reader) */
size_t n; /* bytes still unread */
const char *p; /* current position in buffer */
lua_Reader reader; /* reader function */
void *data; /* additional data */
lua_State *L; /* Lua state (for reader) */
};
LUAI_FUNC int luaZ_fill (ZIO *z);
LUAI_FUNC int luaZ_fill(ZIO *z);
#endif

View file

@ -3854,11 +3854,11 @@ static int iclass_recover(uint8_t key[8], uint32_t index_start, uint32_t loop, u
int runs = 1;
int cycle = 1;
bool repeat = true;
if(allnight){
if (allnight) {
runs = 10;
}
while (repeat == true){
while (repeat == true) {
uint32_t payload_size = sizeof(iclass_recover_req_t);
uint8_t aa2_standard_key[PICOPASS_BLOCK_SIZE] = {0};
memcpy(aa2_standard_key, iClass_Key_Table[1], PICOPASS_BLOCK_SIZE);
@ -3896,23 +3896,23 @@ static int iclass_recover(uint8_t key[8], uint32_t index_start, uint32_t loop, u
if (resp.status == PM3_SUCCESS) {
PrintAndLogEx(SUCCESS, "iCLASS Key Bits Recovery: " _GREEN_("completed!"));
repeat = false;
} else if (resp.status == PM3_ESOFT){
} else if (resp.status == PM3_ESOFT) {
PrintAndLogEx(WARNING, "iCLASS Key Bits Recovery: " _RED_("failed/errors"));
repeat = false;
} else if (resp.status == PM3_EINVARG){
if(allnight){
if(runs <= cycle){
} else if (resp.status == PM3_EINVARG) {
if (allnight) {
if (runs <= cycle) {
repeat = false;
}else{
index_start = index_start+loop;
} else {
index_start = index_start + loop;
cycle++;
}
}else{
} else {
repeat = false;
}
}
free(payload);
if(!repeat){
if (!repeat) {
return resp.status;
}
}
@ -4052,16 +4052,16 @@ static int CmdHFiClassLegRecLookUp(const char *Cmd) {
check_values = false;
}
}
if(check_values){
if (check_values) {
PrintAndLogEx(SUCCESS, _GREEN_("CONFIRMED VALID RAW key ") _RED_("%s"), sprint_hex(div_key, 8));
verified = true;
}else{
} else {
PrintAndLogEx(INFO, _YELLOW_("Raw Key Invalid"));
}
}
if(index % 1000000 == 0){
PrintAndLogEx(INFO, "Tested: " _YELLOW_("%" PRIu64 )" million keys", index/1000000);
if (index % 1000000 == 0) {
PrintAndLogEx(INFO, "Tested: " _YELLOW_("%" PRIu64)" million keys", index / 1000000);
PrintAndLogEx(INFO, "Last Generated Key Value: " _YELLOW_("%s"), sprint_hex(div_key, 8));
}
index++;
@ -4076,9 +4076,9 @@ static int CmdHFiClassLegacyRecover(const char *Cmd) {
CLIParserContext *ctx;
CLIParserInit(&ctx, "hf iclass legrec",
"Attempts to recover the diversified key of a specific iClass card. This may take a long time. The Card must remain be on the PM3 antenna during the whole process! This process may brick the card!",
"hf iclass legrec --macs 0000000089cb984b\n"
"hf iclass legrec --macs 0000000089cb984b --index 0 --loop 100 --notest"
"Attempts to recover the diversified key of a specific iClass card. This may take a long time. The Card must remain be on the PM3 antenna during the whole process! This process may brick the card!",
"hf iclass legrec --macs 0000000089cb984b\n"
"hf iclass legrec --macs 0000000089cb984b --index 0 --loop 100 --notest"
);
void *argtable[] = {
@ -4104,15 +4104,15 @@ static int CmdHFiClassLegacyRecover(const char *Cmd) {
bool no_test = arg_get_lit(ctx, 5);
bool allnight = arg_get_lit(ctx, 6);
if(no_test){
test=false;
if (no_test) {
test = false;
}
if(loop > 10000){
if (loop > 10000) {
PrintAndLogEx(ERR, "Too many loops, arm prone to crashes. For safety specify a number lower than 10000");
CLIParserFree(ctx);
return PM3_EINVARG;
}else if (debug || test){
} else if (debug || test) {
loop = 1;
}
@ -4124,7 +4124,7 @@ static int CmdHFiClassLegacyRecover(const char *Cmd) {
return PM3_ESOFT;
}
diversifyKey(csn, iClass_Key_Table[1], new_div_key);
memcpy(no_first_auth,new_div_key,PICOPASS_BLOCK_SIZE);
memcpy(no_first_auth, new_div_key, PICOPASS_BLOCK_SIZE);
CLIParserFree(ctx);
@ -4133,7 +4133,7 @@ static int CmdHFiClassLegacyRecover(const char *Cmd) {
return PM3_EINVARG;
}
iclass_recover(macs,index,loop,no_first_auth,debug,test,allnight);
iclass_recover(macs, index, loop, no_first_auth, debug, test, allnight);
PrintAndLogEx(WARNING, _YELLOW_("If the process completed successfully, you can now run 'hf iclass legbrute' with the partial key found."));
@ -4146,8 +4146,8 @@ static int CmdHFiClassUnhash(const char *Cmd) {
CLIParserContext *ctx;
CLIParserInit(&ctx, "hf iclass unhash",
"Reverses the hash0 function used generate iclass diversified keys after DES encryption, returning the DES crypted CSN.",
"hf iclass unhash --divkey B4F12AADC5301A2D"
"Reverses the hash0 function used generate iclass diversified keys after DES encryption, returning the DES crypted CSN.",
"hf iclass unhash --divkey B4F12AADC5301A2D"
);
void *argtable[] = {

View file

@ -363,7 +363,8 @@ static int CmdLFHitagSSim(const char *Cmd) {
void *argtable[] = {
arg_param_begin,
arg_lit0("8", "82xx", "simulate 8268/8310"),
arg_param_end};
arg_param_end
};
CLIExecWithReturn(ctx, Cmd, argtable, true);
// bool use_82xx = arg_get_lit(ctx, 1); // not implemented yet

View file

@ -240,8 +240,8 @@ static uint64_t reverse_check(uint64_t z) {
uint64_t ck1 = z & ~(ck2 >> 24); // Clear the bits where ck2 affected the result
// Now ck1 and ck2 have their original values before (after ck function took place)
ck1 = reverse_ck(3,2,ck1);
ck2 = reverse_ck(3,2,ck2);
ck1 = reverse_ck(3, 2, ck1);
ck2 = reverse_ck(3, 2, ck2);
return ck1 | ck2 >> 24; //This is now zP
@ -289,10 +289,10 @@ static void reverse_permute(BitstreamIn_t *p_in, uint64_t z, int l, BitstreamOut
if (pn) { //if p == 1 for that six bit position, then sum it
// pn = 1
uint8_t zl = getSixBitByte(z, l);
if(fix){
if (fix) {
push6bits(out1, zl - 1);
}else{
push6bits(out1, zl );
} else {
push6bits(out1, zl);
}
} else {
// otherwise
@ -424,25 +424,25 @@ void invert_hash0(uint8_t k[8]) {
for (int i = 0; i < 8; i++) {
y |= ((k[i] & 0x80) >> (7 - i)); // Recover the bit of y from the leftmost bit of k[i]
pushbackSixBitByte(&zTilde, (k[i] & 0x7E) >> 1, i); // Recover the six bits of zTilde from the middle of k[i]
if(g_debugMode > 0)printState("z~", zTilde);
if (g_debugMode > 0)printState("z~", zTilde);
p |= ((k[i] & 0x01) << i);
}
if(g_debugMode > 0)PrintAndLogEx(INFO, " y : %02x", y); //value of y (recovered 1 byte of the pre-image)
if (g_debugMode > 0)PrintAndLogEx(INFO, " y : %02x", y); //value of y (recovered 1 byte of the pre-image)
//check if p is part of the array pi, if not invert it
if(g_debugMode > 0)PrintAndLogEx(INFO, " p : %02x", p); //value of p (at some point in the original hash0)
if (g_debugMode > 0)PrintAndLogEx(INFO, " p : %02x", p); //value of p (at some point in the original hash0)
int remainder = find_p_in_pi(p);
if (remainder < 0){
if (remainder < 0) {
p = ~p;
remainder = find_p_in_pi(p);
}
if(g_debugMode > 0)PrintAndLogEx(INFO, " p or ~p : %02x", p); //value of p (at some point in the original hash0)
if (g_debugMode > 0)PrintAndLogEx(INFO, " p or ~p : %02x", p); //value of p (at some point in the original hash0)
//find possible values of x that can return the same remainder
uint8_t x_count = 0;
uint8_t x_array[8];
for (int x = 0x00; x <= 0xFF; x++) {
if(x % 35 == remainder){
if (x % 35 == remainder) {
x_array[x_count] = x;
x_count++;
}
@ -452,11 +452,11 @@ void invert_hash0(uint8_t k[8]) {
pre_image_base[1] = y;
//calculate pre-images based on the potential values of x (should we use pre-flip p and post flip p just in case?)
uint64_t zTil_img[8] = {0}; //8 is the max size it'll have as per max number of X pre-images
for(int img = 0; img < x_count; img++){ //for each potential value of x calculate a pre-image
for (int img = 0; img < x_count; img++) { //for each potential value of x calculate a pre-image
zTil_img[img] = zTilde;
pre_image_base[0] = x_array[img];
uint8_t pc = p; //redefine and reassociate it here or it'll keep changing through the loops
if (x_array[img] & 1){ //Check if potential x7 is 1, if it is then invert p
if (x_array[img] & 1) { //Check if potential x7 is 1, if it is then invert p
pc = ~p;
}
//calculate zTilde for the x preimage
@ -464,7 +464,7 @@ void invert_hash0(uint8_t k[8]) {
uint8_t p_i = (pc >> i) & 0x1; //this is correct!
uint8_t zTilde_i = getSixBitByte(zTilde, i) << 1;
if (k[i] & 0x80) { //this checks the value of the first bit of the byte (value of y_i)
if(p_i){
if (p_i) {
zTilde_i--;
}
zTilde_i = ~zTilde_i; //flip the 6 bit string
@ -475,7 +475,7 @@ void invert_hash0(uint8_t k[8]) {
pushbackSixBitByte(&zTil_img[img], zTilde_i >> 1, i);
}
if(g_debugMode > 0){
if (g_debugMode > 0) {
PrintAndLogEx(INFO, _YELLOW_("Testing Pre-Image Base: %s"), sprint_hex(pre_image_base, sizeof(pre_image_base)));
PrintAndLogEx(DEBUG, " | x| y|z0|z1|z2|z3|z4|z5|z6|z7|");
printState("0|0|z~", zTil_img[img]); //we retrieve the values of z~
@ -522,7 +522,7 @@ void invert_hash0(uint8_t k[8]) {
uint64_t c = 0;
for (int n=0; n < 4; n++){
for (int n = 0; n < 4; n++) {
uint8_t _zn = getSixBitByte(zP, n);
uint8_t _zn4 = getSixBitByte(zP, n + 4);
@ -537,17 +537,17 @@ void invert_hash0(uint8_t k[8]) {
//When these values are present we need to generate additional pre-images if they have the same modulo as other values
// Initialize an array of pointers to uint64_t (start with one value, initialized to 0)
uint64_t* hydra_heads = (uint64_t*)malloc(sizeof(uint64_t)); // Start with one uint64_t
uint64_t *hydra_heads = (uint64_t *)malloc(sizeof(uint64_t)); // Start with one uint64_t
hydra_heads[0] = 0; // Initialize first value to 0
int heads_count = 1; // Track number of forks
// Iterate 4 times as per the original loop
for (int n=0; n < 8; n++){
uint8_t hydra_head = getSixBitByte(c, n);
if(hydra_head <= (n % 4) || hydra_head >= 63-(n % 4)){
for (int n = 0; n < 8; n++) {
uint8_t hydra_head = getSixBitByte(c, n);
if (hydra_head <= (n % 4) || hydra_head >= 63 - (n % 4)) {
// Create new forks by duplicating existing uint64_t values
int new_head = heads_count * 2;
hydra_heads = (uint64_t*)realloc(hydra_heads, new_head * sizeof(uint64_t));
hydra_heads = (uint64_t *)realloc(hydra_heads, new_head * sizeof(uint64_t));
// Duplicate all current values and add the value to both original and new ones
for (int i = 0; i < heads_count; i++) {
// Duplicate current value
@ -556,19 +556,19 @@ void invert_hash0(uint8_t k[8]) {
uint8_t big_hydra_head = 0;
uint8_t hydra_lil_spawns[4] = {0x00, 0x01, 0x02, 0x03};
uint8_t hydra_big_spawns[4] = {0x3f, 0x3e, 0x3d, 0x3c};
if(hydra_head <= n % 4){ //check if is in the lower range
if (hydra_head <= n % 4) { //check if is in the lower range
//replace with big spawn in one hydra and keep small in another
small_hydra_head = hydra_head;
for(int fh = 0; fh < 4; fh++){
if(hydra_lil_spawns[fh] == hydra_head){
for (int fh = 0; fh < 4; fh++) {
if (hydra_lil_spawns[fh] == hydra_head) {
big_hydra_head = hydra_big_spawns[fh];
}
}
}else if(hydra_head >= 63-(n % 4)){ //or the higher range
} else if (hydra_head >= 63 - (n % 4)) { //or the higher range
//replace with small in one hydra and keep big in another
big_hydra_head = hydra_head;
for(int fh = 0; fh < 4; fh++){
if(hydra_big_spawns[fh] == hydra_head){
for (int fh = 0; fh < 4; fh++) {
if (hydra_big_spawns[fh] == hydra_head) {
small_hydra_head = hydra_lil_spawns[fh];
}
}
@ -579,25 +579,25 @@ void invert_hash0(uint8_t k[8]) {
}
// Update the count of total values
heads_count = new_head;
}else{ //no hydra head spawns
} else { //no hydra head spawns
for (int i = 0; i < heads_count; i++) {
pushbackSixBitByte(&hydra_heads[i], hydra_head, n);;
}
}
}
for(int i=0; i<heads_count; i++){
for (int i = 0; i < heads_count; i++) {
//restore the two most significant bytes (x and y)
hydra_heads[i] |= ((uint64_t)x_array[img] << 56);
hydra_heads[i] |= ((uint64_t)y << 48);
if (g_debugMode > 0){
if (g_debugMode > 0) {
PrintAndLogEx(DEBUG, " | x| y|z0|z1|z2|z3|z4|z5|z6|z7|");
printState("origin_r1", hydra_heads[i]);
}
//reverse the swapZbalues function to get the original six-bit byte order
uint64_t original_z = swapZvalues(hydra_heads[i]);
if (g_debugMode > 0){
if (g_debugMode > 0) {
PrintAndLogEx(DEBUG, " | x| y|z0|z1|z2|z3|z4|z5|z6|z7|");
printState("origin_r2", original_z);
PrintAndLogEx(INFO, "--------------------------");
@ -608,17 +608,17 @@ void invert_hash0(uint8_t k[8]) {
//verify result, if it matches add it to the list as a valid pre-image
bool image_match = true;
for(int v=0; v<8; v++){
if(img_div_key[v] != k[v]){ //compare against input key k
for (int v = 0; v < 8; v++) {
if (img_div_key[v] != k[v]) { //compare against input key k
image_match = false;
}
}
uint8_t des_pre_image[8] = {0};
x_num_to_bytes(original_z,sizeof(original_z),des_pre_image);
x_num_to_bytes(original_z, sizeof(original_z), des_pre_image);
if(image_match){
if (image_match) {
PrintAndLogEx(INFO, _GREEN_("Valid pre-image: ")_YELLOW_("%s"), sprint_hex(des_pre_image, sizeof(des_pre_image)));
}else if (!image_match && g_debugMode > 0){
} else if (!image_match && g_debugMode > 0) {
PrintAndLogEx(INFO, _RED_("Invalid pre-image: %s"), sprint_hex(des_pre_image, sizeof(des_pre_image)));
}
}

View file

@ -183,23 +183,23 @@ static int b_replace(lua_State *L) {
void register_bit32_lib(lua_State *L) {
static const luaL_Reg bitlib[] = {
{"arshift", b_arshift},
{"band", b_and},
{"bnot", b_not},
{"bor", b_or},
{"bxor", b_xor},
{"btest", b_test},
{"extract", b_extract},
{"lrotate", b_lrot},
{"lshift", b_lshift},
{"replace", b_replace},
{"rrotate", b_rrot},
{"rshift", b_rshift},
{NULL, NULL}
};
static const luaL_Reg bitlib[] = {
{"arshift", b_arshift},
{"band", b_and},
{"bnot", b_not},
{"bor", b_or},
{"bxor", b_xor},
{"btest", b_test},
{"extract", b_extract},
{"lrotate", b_lrot},
{"lshift", b_lshift},
{"replace", b_replace},
{"rrotate", b_rrot},
{"rshift", b_rshift},
{NULL, NULL}
};
luaL_newlib(L, bitlib);
lua_setfield(L, -2, "bit32");
luaL_newlib(L, bitlib);
lua_setfield(L, -2, "bit32");
}

File diff suppressed because it is too large Load diff

View file

@ -149,6 +149,7 @@ const static vocabulary_t vocabulary[] = {
{ 0, "hf 14a cuids" },
{ 0, "hf 14a info" },
{ 0, "hf 14a sim" },
{ 0, "hf 14a simaid" },
{ 0, "hf 14a sniff" },
{ 0, "hf 14a raw" },
{ 0, "hf 14a reader" },
@ -281,6 +282,7 @@ const static vocabulary_t vocabulary[] = {
{ 1, "hf iclass lookup" },
{ 0, "hf iclass legrec" },
{ 1, "hf iclass legbrute" },
{ 1, "hf iclass unhash" },
{ 0, "hf iclass sim" },
{ 0, "hf iclass eload" },
{ 0, "hf iclass esave" },
@ -674,6 +676,7 @@ const static vocabulary_t vocabulary[] = {
{ 0, "lf hitag hts reader" },
{ 0, "lf hitag hts rdbl" },
{ 0, "lf hitag hts wrbl" },
{ 0, "lf hitag hts sim" },
{ 1, "lf idteck help" },
{ 1, "lf idteck demod" },
{ 0, "lf idteck reader" },

View file

@ -114,7 +114,7 @@ uint32_t reflect32(uint32_t v) {
// swap bytes
v = ((v >> 8) & 0x00FF00FF) | ((v & 0x00FF00FF) << 8);
// swap 2-byte long pairs
v = ( v >> 16 ) | ( v << 16);
v = (v >> 16) | (v << 16);
return v;
}

View file

@ -1310,7 +1310,12 @@
"notes": [
"hf 14a raw -sc 3000 -> select, crc, where 3000 == 'read block 00'",
"hf 14a raw -ak -b 7 40 -> send 7 bit byte 0x40",
"hf 14a raw --ecp -s -> send ECP before select"
"hf 14a raw --ecp -s -> send ECP before select",
"Crypto1 session example, with special auth shortcut 6xxx<key>:",
"hf 14a raw --crypto1 -skc 6000FFFFFFFFFFFF",
"hf 14a raw --crypto1 -kc 3000",
"hf 14a raw --crypto1 -kc 6007FFFFFFFFFFFF",
"hf 14a raw --crypto1 -c 3007"
],
"offline": false,
"options": [
@ -1327,9 +1332,10 @@
"--ecp Use enhanced contactless polling",
"--mag Use Apple magsafe polling",
"--topaz Use Topaz protocol to send command",
"--crypto1 Use crypto1 session",
"<hex> Raw bytes to send"
],
"usage": "hf 14a raw [-hack3rsv] [-t <ms>] [-b <dec>] [--ecp] [--mag] [--topaz] <hex> [<hex>]..."
"usage": "hf 14a raw [-hack3rsv] [-t <ms>] [-b <dec>] [--ecp] [--mag] [--topaz] [--crypto1] <hex> [<hex>]..."
},
"hf 14a reader": {
"command": "hf 14a reader",
@ -1382,6 +1388,30 @@
],
"usage": "hf 14a sim [-hxv] -t <1-12> [-u <hex>] [-n <dec>] [--sk]"
},
"hf 14a simaid": {
"command": "hf 14a simaid",
"description": "Simulate ISO/IEC 14443 type A tag with 4,7 or 10 byte UID, and filter for AID Values These AID Values can be responded to and include extra APDU commands on GetData after response",
"notes": [
"hf 14a simaid -t 3 -> MIFARE Desfire",
"hf 14a simaid -t 4 -> ISO/IEC 14443-4",
"hf 14a simaid -t 11 -> Javacard (JCOP)",
"hf 14a simaid -t 3 --aid a000000000000000000000 --response 9000 --apdu 9000 -> AID, Response and APDU",
"hf 14a simaid -t 3 --rats 05788172220101 --response 01009000 --apdu 86009000 -> Custom RATS Added",
"hf 14a simaid -t 3 --rats 05788172220101 -x -> Enumerate AID Values"
],
"offline": false,
"options": [
"-h, --help This help",
"-t, --type <1-12> Simulation type to use",
"-u, --uid <hex> <4|7|10> hex bytes UID",
"-r, --rats <hex> <0-20> hex bytes RATS",
"-a, --aid <hex> <0-100> hex bytes for AID to respond to (Default: A000000000000000000000)",
"-e, --response <hex> <0-100> hex bytes for APDU Response to AID Select (Default: 9000)",
"-p, --apdu <hex> <0-100> hex bytes for APDU Response to Get Data request after AID (Default: 9000)",
"-x, --enumerate Enumerate all AID values via returning Not Found and print them to console"
],
"usage": "hf 14a simaid [-hx] -t <1-12> [-u <hex>] [-r <hex>] [-a <hex>] [-e <hex>] [-p <hex>]"
},
"hf 14a sniff": {
"command": "hf 14a sniff",
"description": "Sniff the communication between reader and tag Use `hf 14a list` to view collected data.",
@ -3377,7 +3407,7 @@
},
"hf iclass help": {
"command": "hf iclass help",
"description": "help This help list List iclass history view Display content from tag dump file ----------- --------------------- Recovery -------------------- loclass Use loclass to perform bruteforce reader attack lookup Uses authentication trace to check for key in dictionary file legbrute Bruteforces 40 bits of a partial raw key ----------- ---------------------- Utils ---------------------- calcnewkey Calc diversified keys (blocks 3 & 4) to write new keys encode Encode binary wiegand to block 7 encrypt Encrypt given block data decrypt Decrypt given block data or tag dump file managekeys Manage keys to use with iclass commands permutekey Permute function from 'heart of darkness' paper --------------------------------------------------------------------------------------- hf iclass list available offline: yes Alias of `trace list -t iclass -c` with selected protocol data to annotate trace buffer You can load a trace from file (see `trace load -h`) or it be downloaded from device by default It accepts all other arguments of `trace list`. Note that some might not be relevant for this specific protocol",
"description": "help This help list List iclass history view Display content from tag dump file ----------- --------------------- Recovery -------------------- loclass Use loclass to perform bruteforce reader attack lookup Uses authentication trace to check for key in dictionary file legbrute Bruteforces 40 bits of a partial diversified key, provided 24 bits of the key and two valid nr-macs unhash Reverses a diversified key to retrieve hash0 pre-images after DES encryption ----------- ---------------------- Utils ---------------------- calcnewkey Calc diversified keys (blocks 3 & 4) to write new keys encode Encode binary wiegand to block 7 encrypt Encrypt given block data decrypt Decrypt given block data or tag dump file managekeys Manage keys to use with iclass commands permutekey Permute function from 'heart of darkness' paper --------------------------------------------------------------------------------------- hf iclass list available offline: yes Alias of `trace list -t iclass -c` with selected protocol data to annotate trace buffer You can load a trace from file (see `trace load -h`) or it be downloaded from device by default It accepts all other arguments of `trace list`. Note that some might not be relevant for this specific protocol",
"notes": [
"hf iclass list --frame -> show frame delay times",
"hf iclass list -1 -> use trace buffer"
@ -3413,30 +3443,37 @@
"command": "hf iclass legbrute",
"description": "This command take sniffed trace data and partial raw key and bruteforces the remaining 40 bits of the raw key.",
"notes": [
"hf iclass legbrute --csn 8D7BD711FEFF12E0 --epurse feffffffffffffff --macs 00000000BD478F76 --pk B4F12AADC5301225"
"hf iclass legbrute --epurse feffffffffffffff --macs1 1306cad9b6c24466 --macs2 f0bf905e35f97923 --pk B4F12AADC5301225"
],
"offline": true,
"options": [
"-h, --help This help",
"--csn <hex> Specify CSN as 8 hex bytes",
"--epurse <hex> Specify ePurse as 8 hex bytes",
"--macs <hex> MACs",
"--pk <hex> Partial Key"
"--macs1 <hex> MACs captured from the reader",
"--macs2 <hex> MACs captured from the reader, different than the first set (with the same csn and epurse value)",
"--pk <hex> Partial Key from legrec or starting key of keyblock from legbrute",
"--index <dec> Where to start from to retrieve the key, default 0 - value in millions e.g. 1 is 1 million"
],
"usage": "hf iclass legbrute [-h] --csn <hex> --epurse <hex> --macs <hex> --pk <hex>"
"usage": "hf iclass legbrute [-h] --epurse <hex> --macs1 <hex> --macs2 <hex> --pk <hex> [--index <dec>]"
},
"hf iclass legrec": {
"command": "hf iclass legrec",
"description": "Attempts to recover the diversified key of a specific iClass card. This may take a long time. The Card must remain be on the PM3 antenna during the whole process! This process may brick the card!",
"notes": [
"hf iclass legrec --macs 0000000089cb984b"
"hf iclass legrec --macs 0000000089cb984b",
"hf iclass legrec --macs 0000000089cb984b --index 0 --loop 100 --notest"
],
"offline": false,
"options": [
"-h, --help This help",
"--macs <hex> MACs"
"--macs <hex> AA1 Authentication MACs",
"--index <dec> Where to start from to retrieve the key, default 0",
"--loop <dec> The number of key retrieval cycles to perform, max 10000, default 100",
"--debug Re-enables tracing for debugging. Limits cycles to 1.",
"--notest Perform real writes on the card!",
"--allnight Loops the loop for 10 times, recommended loop value of 5000."
],
"usage": "hf iclass legrec [-h] --macs <hex>"
"usage": "hf iclass legrec [-h] --macs <hex> [--index <dec>] [--loop <dec>] [--debug] [--notest] [--allnight]"
},
"hf iclass loclass": {
"command": "hf iclass loclass",
@ -3617,6 +3654,19 @@
],
"usage": "hf iclass sniff [-hj]"
},
"hf iclass unhash": {
"command": "hf iclass unhash",
"description": "Reverses the hash0 function used generate iclass diversified keys after DES encryption, returning the DES crypted CSN.",
"notes": [
"hf iclass unhash --divkey B4F12AADC5301A2D"
],
"offline": true,
"options": [
"-h, --help This help",
"--divkey <hex> The card's Diversified Key value"
],
"usage": "hf iclass unhash [-h] --divkey <hex>"
},
"hf iclass view": {
"command": "hf iclass view",
"description": "Print a iCLASS tag dump file (bin/eml/json)",
@ -9730,21 +9780,22 @@
"command": "lf hitag hts rdbl",
"description": "Read Hitag S memory. Crypto mode: - key format ISK high + ISK low - default key 4F4E4D494B52 (ONMIKR) 8268/8310 password mode: - default password BBDD3399",
"notes": [
"lf hitag hts rdbl -> Hitag S/8211, plain mode",
"lf hitag hts rdbl --82xx -k BBDD3399 -> 8268/8310, password mode",
"lf hitag hts rdbl --nrar 0102030411223344 -> Hitag S, challenge mode",
"lf hitag hts rdbl --crypto -> Hitag S, crypto mode, def key",
"lf hitag hts rdbl -k 4F4E4D494B52 -> Hitag S, crypto mode"
"lf hitag hts rdbl -p 1 -> Hitag S/8211, plain mode",
"lf hitag hts rdbl -p 1 --82xx -k BBDD3399 -> 8268/8310, password mode",
"lf hitag hts rdbl -p 1 --nrar 0102030411223344 -> Hitag S, challenge mode",
"lf hitag hts rdbl -p 1 --crypto -> Hitag S, crypto mode, def key",
"lf hitag hts rdbl -p 1 -k 4F4E4D494B52 -> Hitag S, crypto mode"
],
"offline": false,
"options": [
"-h, --help This help",
"--nrar <hex> nonce / answer writer, 8 hex bytes",
"-8, --82xx 8268/8310 mode",
"--nrar <hex> nonce / answer writer, 8 hex bytes",
"--crypto crypto mode",
"-k, --key <hex> pwd or key, 4 or 6 hex bytes"
"-k, --key <hex> pwd or key, 4 or 6 hex bytes",
"-p, --page <dec> page address to read from"
],
"usage": "lf hitag hts rdbl [-h8] [--nrar <hex>] [--crypto] [-k <hex>]"
"usage": "lf hitag hts rdbl [-h8] [--nrar <hex>] [--crypto] [-k <hex>] -p <dec>"
},
"lf hitag hts reader": {
"command": "lf hitag hts reader",
@ -9760,6 +9811,20 @@
],
"usage": "lf hitag hts reader [-h@]"
},
"lf hitag hts sim": {
"command": "lf hitag hts sim",
"description": "Simulate Hitag S transponder You need to `lf hitag hts eload` first",
"notes": [
"lf hitag hts sim",
"lf hitag hts sim --82xx"
],
"offline": false,
"options": [
"-h, --help This help",
"-8, --82xx simulate 8268/8310"
],
"usage": "lf hitag hts sim [-h8]"
},
"lf hitag hts wrbl": {
"command": "lf hitag hts wrbl",
"description": "Write a page in Hitag S memory. Crypto mode: - key format ISK high + ISK low - default key 4F4E4D494B52 (ONMIKR) 8268/8310 password mode: - default password BBDD3399",
@ -9773,8 +9838,8 @@
"offline": false,
"options": [
"-h, --help This help",
"--nrar <hex> nonce / answer writer, 8 hex bytes",
"-8, --82xx 8268/8310 mode",
"--nrar <hex> nonce / answer writer, 8 hex bytes",
"--crypto crypto mode",
"-k, --key <hex> pwd or key, 4 or 6 hex bytes",
"-p, --page <dec> page address to write to",
@ -9817,13 +9882,8 @@
},
"lf hitag read": {
"command": "lf hitag read",
"description": "Read Hitag memory. It support Hitag S and Hitag 2 Password mode: - default key 4D494B52 (MIKR) Crypto mode: - key format ISK high + ISK low - default key 4F4E4D494B52 (ONMIKR)",
"description": "Read Hitag memory. It support Hitag 2 Password mode: - default key 4D494B52 (MIKR) Crypto mode: - key format ISK high + ISK low - default key 4F4E4D494B52 (ONMIKR)",
"notes": [
"lf hitag read --hts -> Hitag S, plain mode",
"lf hitag read --hts --nrar 0102030411223344 -> Hitag S, challenge mode",
"lf hitag read --hts --crypto -> Hitag S, crypto mode, def key",
"lf hitag read --hts -k 4F4E4D494B52 -> Hitag S, crypto mode",
"",
"lf hitag read --ht2 --pwd -> Hitag 2, pwd mode, def key",
"lf hitag read --ht2 -k 4D494B52 -> Hitag 2, pwd mode",
"lf hitag read --ht2 --nrar 0102030411223344 -> Hitag 2, challenge mode",
@ -9833,14 +9893,13 @@
"offline": false,
"options": [
"-h, --help This help",
"-s, --hts Hitag S",
"-2, --ht2 Hitag 2",
"--pwd password mode",
"--nrar <hex> nonce / answer writer, 8 hex bytes",
"--crypto crypto mode",
"-k, --key <hex> key, 4 or 6 hex bytes"
],
"usage": "lf hitag read [-hs2] [--pwd] [--nrar <hex>] [--crypto] [-k <hex>]"
"usage": "lf hitag read [-h2] [--pwd] [--nrar <hex>] [--crypto] [-k <hex>]"
},
"lf hitag reader": {
"command": "lf hitag reader",
@ -9866,10 +9925,9 @@
"options": [
"-h, --help This help",
"-1, --ht1 simulate Hitag 1",
"-2, --ht2 simulate Hitag 2",
"-s, --hts simulate Hitag S"
"-2, --ht2 simulate Hitag 2"
],
"usage": "lf hitag sim [-h12s]"
"usage": "lf hitag sim [-h12]"
},
"lf hitag sniff": {
"command": "lf hitag sniff",
@ -9911,13 +9969,8 @@
},
"lf hitag wrbl": {
"command": "lf hitag wrbl",
"description": "Write a page in Hitag memory. It support HitagS and Hitag 2 Password mode: - default key 4D494B52 (MIKR) Crypto mode: - key format ISK high + ISK low - default key 4F4E4D494B52 (ONMIKR)",
"description": "Write a page in Hitag memory. It support Hitag 2 Password mode: - default key 4D494B52 (MIKR) Crypto mode: - key format ISK high + ISK low - default key 4F4E4D494B52 (ONMIKR)",
"notes": [
"lf hitag wrbl --hts -p 6 -d 01020304 -> HitagS, plain mode",
"lf hitag wrbl --hts -p 6 -d 01020304 --nrar 0102030411223344 -> HitagS, challenge mode",
"lf hitag wrbl --hts -p 6 -d 01020304 --crypto -> HitagS, crypto mode, def key",
"lf hitag wrbl --hts -p 6 -d 01020304 -k 4F4E4D494B52 -> HitagS, crypto mode",
"",
"lf hitag wrbl --ht2 -p 6 -d 01020304 --pwd -> Hitag 2, pwd mode, def key",
"lf hitag wrbl --ht2 -p 6 -d 01020304 -k 4D494B52 -> Hitag 2, pwd mode",
"lf hitag wrbl --ht2 -p 6 -d 01020304 --nrar 0102030411223344 -> Hitag 2, challenge mode",
@ -9927,7 +9980,6 @@
"offline": false,
"options": [
"-h, --help This help",
"-s, --hts Hitag S",
"-2, --ht2 Hitag 2",
"--pwd password mode",
"--nrar <hex> nonce / answer writer, 8 hex bytes",
@ -9936,7 +9988,7 @@
"-p, --page <dec> page address to write to",
"-d, --data <hex> data, 4 hex bytes"
],
"usage": "lf hitag wrbl [-hs2] [--pwd] [--nrar <hex>] [--crypto] [-k <hex>] -p <dec> -d <hex>"
"usage": "lf hitag wrbl [-h2] [--pwd] [--nrar <hex>] [--crypto] [-k <hex>] -p <dec> -d <hex>"
},
"lf idteck clone": {
"command": "lf idteck clone",
@ -12902,8 +12954,8 @@
}
},
"metadata": {
"commands_extracted": 745,
"commands_extracted": 747,
"extracted_by": "PM3Help2JSON v1.00",
"extracted_on": "2024-09-15T16:16:09"
"extracted_on": "2024-09-30T08:35:18"
}
}

View file

@ -192,6 +192,7 @@ Check column "offline" for their availability.
|`hf 14a cuids `|N |`Collect n>0 ISO14443-a UIDs in one go`
|`hf 14a info `|N |`Tag information`
|`hf 14a sim `|N |`Simulate ISO 14443-a tag`
|`hf 14a simaid `|N |`Simulate ISO 14443-a AID Selection`
|`hf 14a sniff `|N |`sniff ISO 14443-a traffic`
|`hf 14a raw `|N |`Send raw hex data to tag`
|`hf 14a reader `|N |`Act like an ISO14443-a reader`
@ -402,8 +403,9 @@ Check column "offline" for their availability.
|`hf iclass chk `|N |`Check keys`
|`hf iclass loclass `|Y |`Use loclass to perform bruteforce reader attack`
|`hf iclass lookup `|Y |`Uses authentication trace to check for key in dictionary file`
|`hf iclass legrec `|N |`Attempts to recover the standard key of a legacy card`
|`hf iclass legbrute `|Y |`Bruteforces 40 bits of a partial raw key`
|`hf iclass legrec `|N |`Recovers 24 bits of the diversified key of a legacy card provided a valid nr-mac combination`
|`hf iclass legbrute `|Y |`Bruteforces 40 bits of a partial diversified key, provided 24 bits of the key and two valid nr-macs`
|`hf iclass unhash `|Y |`Reverses a diversified key to retrieve hash0 pre-images after DES encryption`
|`hf iclass sim `|N |`Simulate iCLASS tag`
|`hf iclass eload `|N |`Upload file into emulator memory`
|`hf iclass esave `|N |`Save emulator memory to file`
@ -1078,6 +1080,7 @@ Check column "offline" for their availability.
|`lf hitag hts reader `|N |`Act like a Hitag S reader`
|`lf hitag hts rdbl `|N |`Read Hitag S memory`
|`lf hitag hts wrbl `|N |`Write Hitag S page`
|`lf hitag hts sim `|N |`Simulate Hitag transponder`
### lf idteck