custom-space.h

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// Copyright 2020 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_CPPGC_CUSTOM_SPACE_H_
#define INCLUDE_CPPGC_CUSTOM_SPACE_H_
 
#include <stddef.h>
 
namespace cppgc {
 
struct CustomSpaceIndex {
  CustomSpaceIndex(size_t value) : value(value) {}  // NOLINT
  size_t value;
};
 
class CustomSpaceBase {
 public:
  virtual ~CustomSpaceBase() = default;
  virtual CustomSpaceIndex GetCustomSpaceIndex() const = 0;
};
 
template <typename ConcreteCustomSpace>
class CustomSpace : public CustomSpaceBase {
 public:
  CustomSpaceIndex GetCustomSpaceIndex() const final {
    return ConcreteCustomSpace::kSpaceIndex;
  }
};
 
template <typename T, typename = void>
struct SpaceTrait {
  using Space = void;
};
 
}  // namespace cppgc
 
#endif  // INCLUDE_CPPGC_CUSTOM_SPACE_H_