webkitgtk-2.10.2webkitgtk-2.10.2

1 files changed, 144 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/runtime/WeakMapConstructor.cpp b/Source/JavaScriptCore/runtime/WeakMapConstructor.cpp
new file mode 100644
index 000000000..23c43330d
--- /dev/null
+++ b/Source/JavaScriptCore/runtime/WeakMapConstructor.cpp
@@ -0,0 +1,144 @@
+/*
+ * Copyright (C) 2013 Apple, Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#include "config.h"
+#include "WeakMapConstructor.h"
+
+#include "Error.h"
+#include "IteratorOperations.h"
+#include "JSCJSValueInlines.h"
+#include "JSCellInlines.h"
+#include "JSGlobalObject.h"
+#include "JSWeakMap.h"
+#include "StructureInlines.h"
+#include "WeakMapPrototype.h"
+
+namespace JSC {
+
+const ClassInfo WeakMapConstructor::s_info = { "Function", &Base::s_info, 0, CREATE_METHOD_TABLE(WeakMapConstructor) };
+
+void WeakMapConstructor::finishCreation(VM& vm, WeakMapPrototype* prototype)
+{
+    Base::finishCreation(vm, prototype->classInfo()->className);
+    putDirectWithoutTransition(vm, vm.propertyNames->prototype, prototype, DontEnum | DontDelete | ReadOnly);
+    putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(0), ReadOnly | DontEnum | DontDelete);
+}
+
+static EncodedJSValue JSC_HOST_CALL callWeakMap(ExecState* exec)
+{
+    return JSValue::encode(throwTypeError(exec, ASCIILiteral("WeakMap cannot be called as a function")));
+}
+
+static EncodedJSValue JSC_HOST_CALL constructWeakMap(ExecState* exec)
+{
+    JSGlobalObject* globalObject = asInternalFunction(exec->callee())->globalObject();
+    Structure* weakMapStructure = globalObject->weakMapStructure();
+    JSWeakMap* weakMap = JSWeakMap::create(exec, weakMapStructure);
+    JSValue iterable = exec->argument(0);
+    if (iterable.isUndefinedOrNull())
+        return JSValue::encode(weakMap);
+
+    JSValue adderFunction = weakMap->JSObject::get(exec, exec->propertyNames().set);
+    if (exec->hadException())
+        return JSValue::encode(jsUndefined());
+
+    CallData adderFunctionCallData;
+    CallType adderFunctionCallType = getCallData(adderFunction, adderFunctionCallData);
+    if (adderFunctionCallType == CallTypeNone)
+        return JSValue::encode(throwTypeError(exec));
+
+    JSValue iteratorFunction = iterable.get(exec, exec->propertyNames().iteratorSymbol);
+    if (exec->hadException())
+        return JSValue::encode(jsUndefined());
+
+    CallData iteratorFunctionCallData;
+    CallType iteratorFunctionCallType = getCallData(iteratorFunction, iteratorFunctionCallData);
+    if (iteratorFunctionCallType == CallTypeNone)
+        return JSValue::encode(throwTypeError(exec));
+
+    ArgList iteratorFunctionArguments;
+    JSValue iterator = call(exec, iteratorFunction, iteratorFunctionCallType, iteratorFunctionCallData, iterable, iteratorFunctionArguments);
+    if (exec->hadException())
+        return JSValue::encode(jsUndefined());
+
+    if (!iterator.isObject())
+        return JSValue::encode(throwTypeError(exec));
+
+    while (true) {
+        JSValue next = iteratorStep(exec, iterator);
+        if (exec->hadException())
+            return JSValue::encode(jsUndefined());
+
+        if (next.isFalse())
+            return JSValue::encode(weakMap);
+
+        JSValue nextItem = iteratorValue(exec, next);
+        if (exec->hadException())
+            return JSValue::encode(jsUndefined());
+
+        if (!nextItem.isObject()) {
+            throwTypeError(exec);
+            iteratorClose(exec, iterator);
+            return JSValue::encode(jsUndefined());
+        }
+
+        JSValue key = nextItem.get(exec, 0);
+        if (exec->hadException()) {
+            iteratorClose(exec, iterator);
+            return JSValue::encode(jsUndefined());
+        }
+
+        JSValue value = nextItem.get(exec, 1);
+        if (exec->hadException()) {
+            iteratorClose(exec, iterator);
+            return JSValue::encode(jsUndefined());
+        }
+
+        MarkedArgumentBuffer arguments;
+        arguments.append(key);
+        arguments.append(value);
+        call(exec, adderFunction, adderFunctionCallType, adderFunctionCallData, weakMap, arguments);
+        if (exec->hadException()) {
+            iteratorClose(exec, iterator);
+            return JSValue::encode(jsUndefined());
+        }
+    }
+    RELEASE_ASSERT_NOT_REACHED();
+    return JSValue::encode(weakMap);
+}
+
+ConstructType WeakMapConstructor::getConstructData(JSCell*, ConstructData& constructData)
+{
+    constructData.native.function = constructWeakMap;
+    return ConstructTypeHost;
+}
+
+CallType WeakMapConstructor::getCallData(JSCell*, CallData& callData)
+{
+    callData.native.function = callWeakMap;
+    return CallTypeHost;
+}
+
+}