1 files changed, 109 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/API/APICallbackFunction.h b/Source/JavaScriptCore/API/APICallbackFunction.h
new file mode 100644
index 000000000..94b10c420
--- /dev/null
+++ b/Source/JavaScriptCore/API/APICallbackFunction.h
@@ -0,0 +1,109 @@
+/*
+ * 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 "Error.h"
+#include "JSCallbackConstructor.h"
+#include "JSLock.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 JSC_HOST_CALL APICallbackFunction::call(ExecState* exec)
+{
+    JSContextRef execRef = toRef(exec);
+    JSObjectRef functionRef = toRef(exec->callee());
+    JSObjectRef thisObjRef = toRef(jsCast<JSObject*>(exec->thisValue().toThis(exec, NotStrictMode)));
+
+    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->uncheckedArgument(i)));
+
+    JSValueRef exception = 0;
+    JSValueRef result;
+    {
+        JSLock::DropAllLocks dropAllLocks(exec);
+        result = jsCast<T*>(toJS(functionRef))->functionCallback()(execRef, functionRef, thisObjRef, argumentCount, arguments.data(), &exception);
+    }
+    if (exception)
+        exec->vm().throwException(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->uncheckedArgument(i)));
+
+        JSValueRef exception = 0;
+        JSObjectRef result;
+        {
+            JSLock::DropAllLocks dropAllLocks(exec);
+            result = callback(ctx, constructorRef, argumentCount, arguments.data(), &exception);
+        }
+        if (exception) {
+            exec->vm().throwException(exec, toJS(exec, exception));
+            return JSValue::encode(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