33 lines
1.2 KiB
C++
33 lines
1.2 KiB
C++
// Copyright (c) 2018 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#ifndef ATOM_COMMON_API_CONSTRUCTOR_H_
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#define ATOM_COMMON_API_CONSTRUCTOR_H_
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#include "native_mate/constructor.h"
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namespace mate {
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// Create a FunctionTemplate that can be "new"ed in JavaScript.
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// It is user's responsibility to ensure this function is called for one type
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// only ONCE in the program's whole lifetime, otherwise we would have memory
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// leak.
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template <typename T, typename Sig>
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v8::Local<v8::Function> CreateConstructor(v8::Isolate* isolate,
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const base::Callback<Sig>& func) {
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#ifndef NDEBUG
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static bool called = false;
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CHECK(!called) << "CreateConstructor can only be called for one type once";
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called = true;
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#endif
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v8::Local<v8::FunctionTemplate> templ = CreateFunctionTemplate(
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isolate, base::BindRepeating(&mate::internal::InvokeNew<Sig>, func));
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templ->InstanceTemplate()->SetInternalFieldCount(1);
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T::BuildPrototype(isolate, templ);
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return templ->GetFunction(isolate->GetCurrentContext()).ToLocalChecked();
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}
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} // namespace mate
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#endif // ATOM_COMMON_API_CONSTRUCTOR_H_
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