+/*
+ * 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.
+ */
+
+#ifndef APICallbackFunction_h
+#define APICallbackFunction_h
+
+#include "APICast.h"
+#include "APIShims.h"
+#include "Error.h"
+#include "JSCallbackConstructor.h"
+#include <wtf/Vector.h>
+
+namespace JSC {
+
+struct APICallbackFunction {
+
+template <typename T> static EncodedJSValue JSC_HOST_CALL call(ExecState*);
+template <typename T> static EncodedJSValue JSC_HOST_CALL construct(ExecState*);
+
+};
+
+template <typename T>
+EncodedJSValue APICallbackFunction::call(ExecState* exec)
+{
+ JSContextRef execRef = toRef(exec);
+ JSObjectRef functionRef = toRef(exec->callee());
+ JSObjectRef thisObjRef = toRef(exec->hostThisValue().toThisObject(exec));
+
+ int argumentCount = static_cast<int>(exec->argumentCount());
+ Vector<JSValueRef, 16> arguments;
+ arguments.reserveInitialCapacity(argumentCount);
+ for (int i = 0; i < argumentCount; i++)
+ arguments.uncheckedAppend(toRef(exec, exec->argument(i)));
+
+ JSValueRef exception = 0;
+ JSValueRef result;
+ {
+ APICallbackShim callbackShim(exec);
+ result = jsCast<T*>(toJS(functionRef))->functionCallback()(execRef, functionRef, thisObjRef, argumentCount, arguments.data(), &exception);
+ }
+ if (exception)
+ throwError(exec, toJS(exec, exception));
+
+ // result must be a valid JSValue.
+ if (!result)
+ return JSValue::encode(jsUndefined());
+
+ return JSValue::encode(toJS(exec, result));
+}
+
+template <typename T>
+EncodedJSValue JSC_HOST_CALL APICallbackFunction::construct(ExecState* exec)
+{
+ JSObject* constructor = exec->callee();
+ JSContextRef ctx = toRef(exec);
+ JSObjectRef constructorRef = toRef(constructor);
+
+ JSObjectCallAsConstructorCallback callback = jsCast<T*>(constructor)->constructCallback();
+ if (callback) {
+ size_t argumentCount = exec->argumentCount();
+ Vector<JSValueRef, 16> arguments;
+ arguments.reserveInitialCapacity(argumentCount);
+ for (size_t i = 0; i < argumentCount; ++i)
+ arguments.uncheckedAppend(toRef(exec, exec->argument(i)));
+
+ JSValueRef exception = 0;
+ JSObjectRef result;
+ {
+ APICallbackShim callbackShim(exec);
+ result = callback(ctx, constructorRef, argumentCount, arguments.data(), &exception);
+ }
+ if (exception)
+ throwError(exec, toJS(exec, exception));
+ // result must be a valid JSValue.
+ if (!result)
+ return throwVMTypeError(exec);
+ return JSValue::encode(toJS(result));
+ }
+
+ return JSValue::encode(toJS(JSObjectMake(ctx, jsCast<JSCallbackConstructor*>(constructor)->classRef(), 0)));
+}
+
+} // namespace JSC
+
+#endif // APICallbackFunction_h
projects / apple / javascriptcore.git / commitdiff
