Expose Value::IsMap, IsSet, IsWeakMap, IsWeakSet in V8 API.

These checks will be needed for DevTools.

R=yangguo@chromium.org, svenpanne@chromium.org

Review URL: https://codereview.chromium.org/464413002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23338 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

include/v8.h

@@ -1472,6 +1472,30 @@ class V8_EXPORT Value : public Data {
    */
   bool IsPromise() const;
 
+  /**
+   * Returns true if this value is a Map.
+   * This is an experimental feature.
+   */
+  bool IsMap() const;
+
+  /**
+   * Returns true if this value is a Set.
+   * This is an experimental feature.
+   */
+  bool IsSet() const;
+
+  /**
+   * Returns true if this value is a WeakMap.
+   * This is an experimental feature.
+   */
+  bool IsWeakMap() const;
+
+  /**
+   * Returns true if this value is a WeakSet.
+   * This is an experimental feature.
+   */
+  bool IsWeakSet() const;
+
   /**
    * Returns true if this value is an ArrayBuffer.
    * This is an experimental feature.

src/api.cc

@@ -2412,12 +2412,26 @@ bool Value::IsNumber() const {
 }
 
 
-bool Value::IsArgumentsObject() const {
-  i::Handle<i::Object> obj = Utils::OpenHandle(this);
-  if (!obj->IsHeapObject()) return false;
-  i::Isolate* isolate = i::HeapObject::cast(*obj)->GetIsolate();
-  return obj->HasSpecificClassOf(isolate->heap()->Arguments_string());
-}
+#define VALUE_IS_SPECIFIC_TYPE(Type, Class)                            \
+  bool Value::Is##Type() const {                                       \
+    i::Handle<i::Object> obj = Utils::OpenHandle(this);                \
+    if (!obj->IsHeapObject()) return false;                            \
+    i::Isolate* isolate = i::HeapObject::cast(*obj)->GetIsolate();     \
+    return obj->HasSpecificClassOf(isolate->heap()->Class##_string()); \
+  }
+
+VALUE_IS_SPECIFIC_TYPE(ArgumentsObject, Arguments)
+VALUE_IS_SPECIFIC_TYPE(BooleanObject, Boolean)
+VALUE_IS_SPECIFIC_TYPE(NumberObject, Number)
+VALUE_IS_SPECIFIC_TYPE(StringObject, String)
+VALUE_IS_SPECIFIC_TYPE(SymbolObject, Symbol)
+VALUE_IS_SPECIFIC_TYPE(Date, Date)
+VALUE_IS_SPECIFIC_TYPE(Map, Map)
+VALUE_IS_SPECIFIC_TYPE(Set, Set)
+VALUE_IS_SPECIFIC_TYPE(WeakMap, WeakMap)
+VALUE_IS_SPECIFIC_TYPE(WeakSet, WeakSet)
+
+#undef VALUE_IS_SPECIFIC_TYPE
 
 
 bool Value::IsBoolean() const {
@@ -2454,38 +2468,6 @@ bool Value::IsUint32() const {
 }
 
 
-bool Value::IsDate() const {
-  i::Handle<i::Object> obj = Utils::OpenHandle(this);
-  if (!obj->IsHeapObject()) return false;
-  i::Isolate* isolate = i::HeapObject::cast(*obj)->GetIsolate();
-  return obj->HasSpecificClassOf(isolate->heap()->Date_string());
-}
-
-
-bool Value::IsStringObject() const {
-  i::Handle<i::Object> obj = Utils::OpenHandle(this);
-  if (!obj->IsHeapObject()) return false;
-  i::Isolate* isolate = i::HeapObject::cast(*obj)->GetIsolate();
-  return obj->HasSpecificClassOf(isolate->heap()->String_string());
-}
-
-
-bool Value::IsSymbolObject() const {
-  i::Handle<i::Object> obj = Utils::OpenHandle(this);
-  if (!obj->IsHeapObject()) return false;
-  i::Isolate* isolate = i::HeapObject::cast(*obj)->GetIsolate();
-  return obj->HasSpecificClassOf(isolate->heap()->Symbol_string());
-}
-
-
-bool Value::IsNumberObject() const {
-  i::Handle<i::Object> obj = Utils::OpenHandle(this);
-  if (!obj->IsHeapObject()) return false;
-  i::Isolate* isolate = i::HeapObject::cast(*obj)->GetIsolate();
-  return obj->HasSpecificClassOf(isolate->heap()->Number_string());
-}
-
-
 static bool CheckConstructor(i::Isolate* isolate,
                              i::Handle<i::JSObject> obj,
                              const char* class_name) {
@@ -2517,14 +2499,6 @@ bool Value::IsNativeError() const {
 }
 
 
-bool Value::IsBooleanObject() const {
-  i::Handle<i::Object> obj = Utils::OpenHandle(this);
-  if (!obj->IsHeapObject()) return false;
-  i::Isolate* isolate = i::HeapObject::cast(*obj)->GetIsolate();
-  return obj->HasSpecificClassOf(isolate->heap()->Boolean_string());
-}
-
-
 bool Value::IsRegExp() const {
   i::Handle<i::Object> obj = Utils::OpenHandle(this);
   return obj->IsJSRegExp();

src/heap/heap.h

@@ -294,6 +294,10 @@ namespace internal {
   V(String_string, "String")                                       \
   V(symbol_string, "symbol")                                       \
   V(Symbol_string, "Symbol")                                       \
+  V(Map_string, "Map")                                             \
+  V(Set_string, "Set")                                             \
+  V(WeakMap_string, "WeakMap")                                     \
+  V(WeakSet_string, "WeakSet")                                     \
   V(for_string, "for")                                             \
   V(for_api_string, "for_api")                                     \
   V(for_intern_string, "for_intern")                               \

test/cctest/test-api.cc

@@ -1556,6 +1556,42 @@ THREADED_TEST(ArgumentsObject) {
 }
 
 
+THREADED_TEST(IsMapOrSet) {
+  LocalContext env;
+  v8::HandleScope scope(env->GetIsolate());
+  v8::Handle<Value> map = CompileRun("new Map()");
+  v8::Handle<Value> set = CompileRun("new Set()");
+  v8::Handle<Value> weak_map = CompileRun("new WeakMap()");
+  v8::Handle<Value> weak_set = CompileRun("new WeakSet()");
+  CHECK(map->IsMap());
+  CHECK(set->IsSet());
+  CHECK(weak_map->IsWeakMap());
+  CHECK(weak_set->IsWeakSet());
+
+  CHECK(!map->IsSet());
+  CHECK(!map->IsWeakMap());
+  CHECK(!map->IsWeakSet());
+
+  CHECK(!set->IsMap());
+  CHECK(!set->IsWeakMap());
+  CHECK(!set->IsWeakSet());
+
+  CHECK(!weak_map->IsMap());
+  CHECK(!weak_map->IsSet());
+  CHECK(!weak_map->IsWeakSet());
+
+  CHECK(!weak_set->IsMap());
+  CHECK(!weak_set->IsSet());
+  CHECK(!weak_set->IsWeakMap());
+
+  v8::Handle<Value> object = CompileRun("{a:42}");
+  CHECK(!object->IsMap());
+  CHECK(!object->IsSet());
+  CHECK(!object->IsWeakMap());
+  CHECK(!object->IsWeakSet());
+}
+
+
 THREADED_TEST(StringObject) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());