[builtins] implement Array.prototype[@@iterator] in TFJ builtins

src/contexts.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_CONTEXTS_H_
 #define V8_CONTEXTS_H_
 
 #include "src/heap/heap.h"
 #include "src/objects.h"
 
@@ skipping 94 matching lines @@
   V(SET_ADD_METHOD_INDEX, JSFunction, set_add)                            \
   V(SET_DELETE_METHOD_INDEX, JSFunction, set_delete)                      \
   V(SET_HAS_METHOD_INDEX, JSFunction, set_has)                            \
   V(SYNTAX_ERROR_FUNCTION_INDEX, JSFunction, syntax_error_function)       \
   V(TYPE_ERROR_FUNCTION_INDEX, JSFunction, type_error_function)           \
   V(URI_ERROR_FUNCTION_INDEX, JSFunction, uri_error_function)             \
   V(WASM_COMPILE_ERROR_FUNCTION_INDEX, JSFunction,                        \
     wasm_compile_error_function)                                          \
   V(WASM_RUNTIME_ERROR_FUNCTION_INDEX, JSFunction, wasm_runtime_error_function)
 
+#define NATIVE_CONTEXT_JS_ARRAY_ITERATOR_MAPS(V)                               \
+  V(TYPED_ARRAY_KEY_ITERATOR_MAP_INDEX, Map, typed_array_key_iterator_map)     \
+  V(FAST_ARRAY_KEY_ITERATOR_MAP_INDEX, Map, fast_array_key_iterator_map)       \
+  V(GENERIC_ARRAY_KEY_ITERATOR_MAP_INDEX, Map, array_key_iterator_map)         \
+                                                                               \
+  V(UINT8_ARRAY_KEY_VALUE_ITERATOR_MAP_INDEX, Map,                             \
+    uint8_array_key_value_iterator_map)                                        \
+  V(INT8_ARRAY_KEY_VALUE_ITERATOR_MAP_INDEX, Map,                              \
+    int8_array_key_value_iterator_map)                                         \
+  V(UINT16_ARRAY_KEY_VALUE_ITERATOR_MAP_INDEX, Map,                            \
+    uint16_array_key_value_iterator_map)                                       \
+  V(INT16_ARRAY_KEY_VALUE_ITERATOR_MAP_INDEX, Map,                             \
+    int16_array_key_value_iterator_map)                                        \
+  V(UINT32_ARRAY_KEY_VALUE_ITERATOR_MAP_INDEX, Map,                            \
+    uint32_array_key_value_iterator_map)                                       \
+  V(INT32_ARRAY_KEY_VALUE_ITERATOR_MAP_INDEX, Map,                             \
+    int32_array_key_value_iterator_map)                                        \
+  V(FLOAT32_ARRAY_KEY_VALUE_ITERATOR_MAP_INDEX, Map,                           \
+    float32_array_key_value_iterator_map)                                      \
+  V(FLOAT64_ARRAY_KEY_VALUE_ITERATOR_MAP_INDEX, Map,                           \
+    float64_array_key_value_iterator_map)                                      \
+  V(UINT8_CLAMPED_ARRAY_KEY_VALUE_ITERATOR_MAP_INDEX, Map,                     \
+    uint8_clamped_array_key_value_iterator_map)                                \
+                                                                               \
+  V(FAST_SMI_ARRAY_KEY_VALUE_ITERATOR_MAP_INDEX, Map,                          \
+    fast_smi_array_key_value_iterator_map)                                     \
+  V(FAST_HOLEY_SMI_ARRAY_KEY_VALUE_ITERATOR_MAP_INDEX, Map,                    \
+    fast_holey_smi_array_key_value_iterator_map)                               \
+  V(FAST_ARRAY_KEY_VALUE_ITERATOR_MAP_INDEX, Map,                              \
+    fast_array_key_value_iterator_map)                                         \
+  V(FAST_HOLEY_ARRAY_KEY_VALUE_ITERATOR_MAP_INDEX, Map,                        \
+    fast_holey_array_key_value_iterator_map)                                   \
+  V(FAST_DOUBLE_ARRAY_KEY_VALUE_ITERATOR_MAP_INDEX, Map,                       \
+    fast_double_array_key_value_iterator_map)                                  \
+  V(FAST_HOLEY_DOUBLE_ARRAY_KEY_VALUE_ITERATOR_MAP_INDEX, Map,                 \
+    fast_holey_double_array_key_value_iterator_map)                            \
+  V(GENERIC_ARRAY_KEY_VALUE_ITERATOR_MAP_INDEX, Map,                           \
+    array_key_value_iterator_map)                                              \
+                                                                               \
+  V(UINT8_ARRAY_VALUE_ITERATOR_MAP_INDEX, Map, uint8_array_value_iterator_map) \
+  V(INT8_ARRAY_VALUE_ITERATOR_MAP_INDEX, Map, int8_array_value_iterator_map)   \
+  V(UINT16_ARRAY_VALUE_ITERATOR_MAP_INDEX, Map,                                \
+    uint16_array_value_iterator_map)                                           \
+  V(INT16_ARRAY_VALUE_ITERATOR_MAP_INDEX, Map, int16_array_value_iterator_map) \
+  V(UINT32_ARRAY_VALUE_ITERATOR_MAP_INDEX, Map,                                \
+    uint32_array_value_iterator_map)                                           \
+  V(INT32_ARRAY_VALUE_ITERATOR_MAP_INDEX, Map, int32_array_value_iterator_map) \
+  V(FLOAT32_ARRAY_VALUE_ITERATOR_MAP_INDEX, Map,                               \
+    float32_array_value_iterator_map)                                          \
+  V(FLOAT64_ARRAY_VALUE_ITERATOR_MAP_INDEX, Map,                               \
+    float64_array_value_iterator_map)                                          \
+  V(UINT8_CLAMPED_ARRAY_VALUE_ITERATOR_MAP_INDEX, Map,                         \
+    uint8_clamped_array_value_iterator_map)                                    \
+                                                                               \
+  V(FAST_SMI_ARRAY_VALUE_ITERATOR_MAP_INDEX, Map,                              \
+    fast_smi_array_value_iterator_map)                                         \
+  V(FAST_HOLEY_SMI_ARRAY_VALUE_ITERATOR_MAP_INDEX, Map,                        \
+    fast_holey_smi_array_value_iterator_map)                                   \
+  V(FAST_ARRAY_VALUE_ITERATOR_MAP_INDEX, Map, fast_array_value_iterator_map)   \
+  V(FAST_HOLEY_ARRAY_VALUE_ITERATOR_MAP_INDEX, Map,                            \
+    fast_holey_array_value_iterator_map)                                       \
+  V(FAST_DOUBLE_ARRAY_VALUE_ITERATOR_MAP_INDEX, Map,                           \
+    fast_double_array_value_iterator_map)                                      \
+  V(FAST_HOLEY_DOUBLE_ARRAY_VALUE_ITERATOR_MAP_INDEX, Map,                     \
+    fast_holey_double_array_value_iterator_map)                                \
+  V(GENERIC_ARRAY_VALUE_ITERATOR_MAP_INDEX, Map, array_value_iterator_map)
+
 #define NATIVE_CONTEXT_FIELDS(V)                                               \
   V(GLOBAL_PROXY_INDEX, JSObject, global_proxy_object)                         \
   V(EMBEDDER_DATA_INDEX, FixedArray, embedder_data)                            \
   /* Below is alpha-sorted */                                                  \
   V(ACCESSOR_PROPERTY_DESCRIPTOR_MAP_INDEX, Map,                               \
     accessor_property_descriptor_map)                                          \
   V(ALLOW_CODE_GEN_FROM_STRINGS_INDEX, Object, allow_code_gen_from_strings)    \
   V(ARRAY_BUFFER_FUN_INDEX, JSFunction, array_buffer_fun)                      \
   V(ARRAY_BUFFER_MAP_INDEX, Map, array_buffer_map)                             \
   V(ARRAY_FUNCTION_INDEX, JSFunction, array_function)                          \
@@ skipping 124 matching lines @@
   V(TYPED_ARRAY_PROTOTYPE_INDEX, JSObject, typed_array_prototype)              \
   V(UINT16_ARRAY_FUN_INDEX, JSFunction, uint16_array_fun)                      \
   V(UINT16X8_FUNCTION_INDEX, JSFunction, uint16x8_function)                    \
   V(UINT32_ARRAY_FUN_INDEX, JSFunction, uint32_array_fun)                      \
   V(UINT32X4_FUNCTION_INDEX, JSFunction, uint32x4_function)                    \
   V(UINT8_ARRAY_FUN_INDEX, JSFunction, uint8_array_fun)                        \
   V(UINT8_CLAMPED_ARRAY_FUN_INDEX, JSFunction, uint8_clamped_array_fun)        \
   V(UINT8X16_FUNCTION_INDEX, JSFunction, uint8x16_function)                    \
   V(CURRENT_MODULE_INDEX, Module, current_module)                              \
   NATIVE_CONTEXT_INTRINSIC_FUNCTIONS(V)                                        \
-  NATIVE_CONTEXT_IMPORTED_FIELDS(V)
+  NATIVE_CONTEXT_IMPORTED_FIELDS(V)                                            \
+  NATIVE_CONTEXT_JS_ARRAY_ITERATOR_MAPS(V)
 
 // A table of all script contexts. Every loaded top-level script with top-level
 // lexical declarations contributes its ScriptContext into this table.
 //
 // The table is a fixed array, its first slot is the current used count and
 // the subsequent slots 1..used contain ScriptContexts.
 class ScriptContextTable : public FixedArray {
  public:
   // Conversions.
   static inline ScriptContextTable* cast(Object* context);
@@ skipping 92 matching lines @@
 // script will have the ScriptContext rather than a FunctionContext.
 // Script contexts from all top-level scripts are gathered in
 // ScriptContextTable.
 
 class Context: public FixedArray {
  public:
   // Conversions.
   static inline Context* cast(Object* context);
 
   // The default context slot layout; indices are FixedArray slot indices.
-  enum {
+  enum Field {
     // These slots are in all contexts.
     CLOSURE_INDEX,
     PREVIOUS_INDEX,
     // The extension slot is used for either the global object (in native
     // contexts), eval extension object (function contexts), subject of with
     // (with contexts), or the variable name (catch contexts), the serialized
     // scope info (block contexts), or the module instance (module contexts).
     EXTENSION_INDEX,
     NATIVE_CONTEXT_INDEX,
 
@@ skipping 185 matching lines @@
   // Bootstrapping-aware type checks.
   V8_EXPORT_PRIVATE static bool IsBootstrappingOrNativeContext(Isolate* isolate,
                                                                Object* object);
   static bool IsBootstrappingOrValidParentContext(Object* object, Context* kid);
 #endif
 
   STATIC_ASSERT(kHeaderSize == Internals::kContextHeaderSize);
   STATIC_ASSERT(EMBEDDER_DATA_INDEX == Internals::kContextEmbedderDataIndex);
 };
 
+typedef Context::Field ContextField;
+
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CONTEXTS_H_