[ABANDONED] Implement Promises.

Source/bindings/v8/custom/V8PromiseCustom.cpp

+/*
+ * Copyright (C) 2013 Google 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "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 THE COPYRIGHT
+ * OWNER 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 "V8Promise.h"
+
+#include "V8PromiseResolver.h"
+#include "bindings/v8/V8Binding.h"
+#include "bindings/v8/V8PromiseUtilities.h"
+#include "bindings/v8/V8ScriptRunner.h"
+#include <v8.h>
+
+namespace WebCore {
+void V8Promise::constructorCustom(const v8::FunctionCallbackInfo<v8::Value>& args)
+{
+    if (args.Length() != 1 || args[0].IsEmpty() || !args[0]->IsFunction()) {
+        args.GetReturnValue().Set(V8ThrowException::throwError(v8TypeError, "Promise constructor takes exact one function parameter.", args.GetIsolate()));
+        return;
+    }
+    args.GetReturnValue().Set(v8::Handle<v8::Value>());
+    v8::Handle<v8::Function> init = args[0].As<v8::Function>();
+    v8::Handle<v8::Function> promiseConstructor = V8PromiseUtilities::promiseConstructor(args.GetIsolate());
+
+    if (promiseConstructor.IsEmpty())
+        return;
+    v8::Handle<v8::Function> promiseResolverConstructor = V8PromiseUtilities::promiseResolverConstructor(args.GetIsolate());
+    if (promiseResolverConstructor.IsEmpty())
+        return;
+
+    // Ignore the constructor parameter. Promise internal constructor doen't take a parameter.
+    v8::Handle<v8::Value> promise = promiseConstructor->CallAsConstructor(0, 0);
+    if (promise.IsEmpty() || !promise->IsObject())
+        return;
+    v8::Handle<v8::Object> promiseWrapper = V8DOMWrapper::createWrapper(args.Holder(), &V8Promise::info, 0, args.GetIsolate());
+    promiseWrapper->SetInternalField(v8DOMWrapperObjectIndex, promise);
+
+    v8::Handle<v8::Value> associated = promise.As<v8::Object>()->Get(v8::String::NewSymbol("associated"));
+    if (associated.IsEmpty())
+        return;
+    v8::Handle<v8::Value> resolver = promiseResolverConstructor->CallAsConstructor(1, &associated);
+    if (resolver.IsEmpty())
+        return;
+    v8::Handle<v8::Object> resolverWrapper = V8DOMWrapper::createWrapper(args.Holder(), &V8PromiseResolver::info, 0, args.GetIsolate());
+    resolverWrapper->SetInternalField(v8DOMWrapperObjectIndex, resolver);
+
+    v8::Handle<v8::Value> initArgs[] = {
+        resolverWrapper
+    };
+
+    v8::TryCatch trycatch;
+    v8::Handle<v8::Value> r = init->Call(promiseWrapper, sizeof(initArgs) / sizeof(initArgs[0]), &initArgs[0]);
+    if (r.IsEmpty()) {
+        fprintf(stderr, "An exception is thrown.\n");
+        // An exception is thrown.
+        v8::Handle<v8::Value> exception = trycatch.Exception();
+        V8PromiseUtilities::callUnwrappedMethod("reject", resolverWrapper, 1, &exception,
+            args.GetIsolate(), V8PromiseUtilities::promiseResolverPrototype(args.GetIsolate()));
+    }
+    args.GetReturnValue().Set(promiseWrapper);
+}
+
+void V8Promise::fulfillMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& args)
+{
+    v8SetReturnValue(args, V8PromiseUtilities::callStatic("fulfill", args, V8PromiseUtilities::promiseConstructor(args.GetIsolate())));
+}
+
+void V8Promise::resolveMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& args)
+{
+    v8SetReturnValue(args, V8PromiseUtilities::callStatic("resolve", args, V8PromiseUtilities::promiseConstructor(args.GetIsolate())));
+}
+
+void V8Promise::rejectMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& args)
+{
+    v8SetReturnValue(args, V8PromiseUtilities::callStatic("reject", args, V8PromiseUtilities::promiseConstructor(args.GetIsolate())));
+}
+
+void V8Promise::anyMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& args)
+{
+    v8SetReturnValue(args, V8PromiseUtilities::callStatic("any", args, V8PromiseUtilities::promiseConstructor(args.GetIsolate())));
+}
+
+void V8Promise::everyMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& args)
+{
+    v8SetReturnValue(args, V8PromiseUtilities::callStatic("every", args, V8PromiseUtilities::promiseConstructor(args.GetIsolate())));
+}
+
+void V8Promise::someMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& args)
+{
+    v8SetReturnValue(args, V8PromiseUtilities::callStatic("some", args, V8PromiseUtilities::promiseConstructor(args.GetIsolate())));
+}
+
+void V8Promise::thenMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& args)
+{
+    v8SetReturnValue(args, V8PromiseUtilities::callUnwrappedMethod("then", args, V8PromiseUtilities::promisePrototype(args.GetIsolate())));
+}
+
+void V8Promise::catchMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& args)
+{
+    v8SetReturnValue(args, V8PromiseUtilities::callUnwrappedMethod("catch", args, V8PromiseUtilities::promisePrototype(args.GetIsolate())));
+}
+
+} // namespace WebCore
+