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[jsinterp] Support multiple indexing (eg a[1][2])

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* extend single indexing with improved RE (should probably use/have used _separate_at_paren())
* fix some cases that should have given undefined, not throwing
* standardise RE group names
* support length of objects, like {1: 2, 3: 4, length: 42}
This commit is contained in:
dirkf 2024-12-12 00:15:31 +00:00
parent c1a03b1ac3
commit 81e64cacf2
2 changed files with 32 additions and 15 deletions
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10
test/test_jsinterp.py
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@ -366,6 +366,16 @@ class TestJSInterpreter(unittest.TestCase):
self._test('function f() { let a; return a?.qq; }', JS_Undefined)
self._test('function f() { let a = {m1: 42, m2: 0 }; return a?.qq; }', JS_Undefined)
def test_indexing(self):
self._test('function f() { return [1, 2, 3, 4][3]}', 4)
self._test('function f() { return [1, [2, [3, [4]]]][1][1][1][0]}', 4)
self._test('function f() { var o = {1: 2, 3: 4}; return o[3]}', 4)
self._test('function f() { var o = {1: 2, 3: 4}; return o["3"]}', 4)
self._test('function f() { return [1, [2, {3: [4]}]][1][1]["3"][0]}', 4)
self._test('function f() { return [1, 2, 3, 4].length}', 4)
self._test('function f() { var o = {1: 2, 3: 4}; return o.length}', JS_Undefined)
self._test('function f() { var o = {1: 2, 3: 4}; o["length"] = 42; return o.length}', 42)
def test_regex(self):
self._test('function f() { let a=/,,[/,913,/](,)}/; }', None)