83 lines
2 KiB
C
83 lines
2 KiB
C
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// Copyright 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE.chromium file.
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#ifndef NATIVE_MATE_ARGUMENTS_H_
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#define NATIVE_MATE_ARGUMENTS_H_
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#include "base/basictypes.h"
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#include "native_mate/compat.h"
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#include "native_mate/converter.h"
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namespace mate {
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// Arguments is a wrapper around v8::FunctionCallbackInfo that integrates
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// with Converter to make it easier to marshall arguments and return values
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// between V8 and C++.
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class Arguments {
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public:
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Arguments();
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explicit Arguments(const MATE_METHOD_ARGS_TYPE& info);
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~Arguments();
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template<typename T>
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bool GetHolder(T* out) {
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return ConvertFromV8(isolate_, info_->Holder(), out);
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}
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template<typename T>
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bool GetData(T* out) {
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return ConvertFromV8(isolate_, info_->Data(), out);
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}
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template<typename T>
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bool GetNext(T* out) {
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if (next_ >= info_->Length()) {
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insufficient_arguments_ = true;
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return false;
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}
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v8::Handle<v8::Value> val = (*info_)[next_++];
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return ConvertFromV8(isolate_, val, out);
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}
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template<typename T>
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bool GetRemaining(std::vector<T>* out) {
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if (next_ >= info_->Length()) {
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insufficient_arguments_ = true;
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return false;
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}
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int remaining = info_->Length() - next_;
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out->resize(remaining);
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for (int i = 0; i < remaining; ++i) {
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v8::Handle<v8::Value> val = (*info_)[next_++];
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if (!ConvertFromV8(isolate_, val, &out->at(i)))
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return false;
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}
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return true;
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}
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#if NODE_VERSION_AT_LEAST(0, 11, 0)
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template<typename T>
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void Return(T val) {
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info_->GetReturnValue().Set(ConvertToV8(isolate_, val));
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}
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#endif
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v8::Handle<v8::Value> PeekNext() const;
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void ThrowError() const;
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void ThrowTypeError(const std::string& message) const;
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v8::Isolate* isolate() const { return isolate_; }
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private:
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v8::Isolate* isolate_;
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const MATE_METHOD_ARGS_TYPE* info_;
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int next_;
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bool insufficient_arguments_;
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};
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} // namespace mate
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#endif // NATIVE_MATE_ARGUMENTS_H_
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