spaces.php

aws/Aws/Api/ShapeMap.php

@@ -0,0 +1,66 @@
+<?php
+namespace Aws\Api;
+
+/**
+ * Builds shape based on shape references.
+ */
+class ShapeMap
+{
+    /** @var array */
+    private $definitions;
+
+    /** @var Shape[] */
+    private $simple;
+
+    /**
+     * @param array $shapeModels Associative array of shape definitions.
+     */
+    public function __construct(array $shapeModels)
+    {
+        $this->definitions = $shapeModels;
+    }
+
+    /**
+     * Get an array of shape names.
+     *
+     * @return array
+     */
+    public function getShapeNames()
+    {
+        return array_keys($this->definitions);
+    }
+
+    /**
+     * Resolve a shape reference
+     *
+     * @param array $shapeRef Shape reference shape
+     *
+     * @return Shape
+     * @throws \InvalidArgumentException
+     */
+    public function resolve(array $shapeRef)
+    {
+        $shape = $shapeRef['shape'];
+
+        if (!isset($this->definitions[$shape])) {
+            throw new \InvalidArgumentException('Shape not found: ' . $shape);
+        }
+
+        $isSimple = count($shapeRef) == 1;
+        if ($isSimple && isset($this->simple[$shape])) {
+            return $this->simple[$shape];
+        }
+
+        $definition = $shapeRef + $this->definitions[$shape];
+        $definition['name'] = $definition['shape'];
+        unset($definition['shape']);
+
+        $result = Shape::create($definition, $this);
+
+        if ($isSimple) {
+            $this->simple[$shape] = $result;
+        }
+
+        return $result;
+    }
+}