JavaScriptCore-7600.1.4.9.tar.gz

[apple/javascriptcore.git] / runtime / JSArrayBuffer.cpp

diff --git a/runtime/JSArrayBuffer.cpp b/runtime/JSArrayBuffer.cpp
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+++ b/runtime/JSArrayBuffer.cpp
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+/*
+ * 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 "JSArrayBuffer.h"
+
+#include "JSCInlines.h"
+#include "Reject.h"
+
+namespace JSC {
+
+const ClassInfo JSArrayBuffer::s_info = {
+    "ArrayBuffer", &Base::s_info, 0, 0, CREATE_METHOD_TABLE(JSArrayBuffer)};
+
+JSArrayBuffer::JSArrayBuffer(VM& vm, Structure* structure, PassRefPtr<ArrayBuffer> arrayBuffer)
+    : Base(vm, structure)
+    , m_impl(arrayBuffer.get())
+{
+}
+
+void JSArrayBuffer::finishCreation(VM& vm)
+{
+    Base::finishCreation(vm);
+    vm.heap.addReference(this, m_impl);
+}
+
+JSArrayBuffer* JSArrayBuffer::create(
+    VM& vm, Structure* structure, PassRefPtr<ArrayBuffer> passedBuffer)
+{
+    RefPtr<ArrayBuffer> buffer = passedBuffer;
+    JSArrayBuffer* result =
+        new (NotNull, allocateCell<JSArrayBuffer>(vm.heap))
+        JSArrayBuffer(vm, structure, buffer);
+    result->finishCreation(vm);
+    return result;
+}
+
+Structure* JSArrayBuffer::createStructure(
+    VM& vm, JSGlobalObject* globalObject, JSValue prototype)
+{
+    return Structure::create(
+        vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info(),
+        NonArray);
+}
+
+bool JSArrayBuffer::getOwnPropertySlot(
+    JSObject* object, ExecState* exec, PropertyName propertyName, PropertySlot& slot)
+{
+    JSArrayBuffer* thisObject = jsCast<JSArrayBuffer*>(object);
+    
+    if (propertyName == exec->propertyNames().byteLength) {
+        slot.setValue(thisObject, DontDelete | ReadOnly, jsNumber(thisObject->impl()->byteLength()));
+        return true;
+    }
+    
+    return Base::getOwnPropertySlot(thisObject, exec, propertyName, slot);
+}
+
+void JSArrayBuffer::put(
+    JSCell* cell, ExecState* exec, PropertyName propertyName, JSValue value,
+    PutPropertySlot& slot)
+{
+    JSArrayBuffer* thisObject = jsCast<JSArrayBuffer*>(cell);
+    
+    if (propertyName == exec->propertyNames().byteLength) {
+        reject(exec, slot.isStrictMode(), "Attempting to write to a read-only array buffer property.");
+        return;
+    }
+    
+    Base::put(thisObject, exec, propertyName, value, slot);
+}
+
+bool JSArrayBuffer::defineOwnProperty(
+    JSObject* object, ExecState* exec, PropertyName propertyName,
+    const PropertyDescriptor& descriptor, bool shouldThrow)
+{
+    JSArrayBuffer* thisObject = jsCast<JSArrayBuffer*>(object);
+    
+    if (propertyName == exec->propertyNames().byteLength)
+        return reject(exec, shouldThrow, "Attempting to define read-only array buffer property.");
+    
+    return Base::defineOwnProperty(thisObject, exec, propertyName, descriptor, shouldThrow);
+}
+
+bool JSArrayBuffer::deleteProperty(JSCell* cell, ExecState* exec, PropertyName propertyName)
+{
+    JSArrayBuffer* thisObject = jsCast<JSArrayBuffer*>(cell);
+    
+    if (propertyName == exec->propertyNames().byteLength)
+        return false;
+    
+    return Base::deleteProperty(thisObject, exec, propertyName);
+}
+
+void JSArrayBuffer::getOwnNonIndexPropertyNames(
+    JSObject* object, ExecState* exec, PropertyNameArray& array, EnumerationMode mode)
+{
+    JSArrayBuffer* thisObject = jsCast<JSArrayBuffer*>(object);
+    
+    if (mode == IncludeDontEnumProperties)
+        array.add(exec->propertyNames().byteLength);
+    
+    Base::getOwnNonIndexPropertyNames(thisObject, exec, array, mode);
+}
+
+} // namespace JSC
+