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// Copyright 2021 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef INCLUDE_V8_EMBEDDER_STATE_SCOPE_H_
#define INCLUDE_V8_EMBEDDER_STATE_SCOPE_H_
#include <memory>
#include "v8-internal.h" // NOLINT(build/include_directory)
#include "v8-local-handle.h" // NOLINT(build/include_directory)
namespace v8 {
class Context;
namespace internal {
class EmbedderState;
} // namespace internal
// A StateTag represents a possible state of the embedder.
enum class EmbedderStateTag : uint8_t {
// reserved
EMPTY = 0,
OTHER = 1,
// embedder can define any state after
};
// A stack-allocated class that manages an embedder state on the isolate.
// After an EmbedderState scope has been created, a new embedder state will be
// pushed on the isolate stack.
class V8_EXPORT EmbedderStateScope {
public:
EmbedderStateScope(Isolate* isolate, Local<v8::Context> context,
EmbedderStateTag tag);
~EmbedderStateScope();
private:
// Declaring operator new and delete as deleted is not spec compliant.
// Therefore declare them private instead to disable dynamic alloc
void* operator new(size_t size);
void* operator new[](size_t size);
void operator delete(void*, size_t);
void operator delete[](void*, size_t);
std::unique_ptr<internal::EmbedderState> embedder_state_;
};
} // namespace v8
#endif // INCLUDE_V8_EMBEDDER_STATE_SCOPE_H_