// 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_MACROS_H_

#define INCLUDE_CPPGC_MACROS_H_

#include <cstddef>

#include "cppgc/internal/compiler-specific.h"

namespace cppgc {

#define CPPGC_DISALLOW_NEW() \

public: \

using IsDisallowNewMarker CPPGC_UNUSED = int; \

void* operator new(size_t, void* location) { return location; } \

void* operator new(size_t) = delete; \

static_assert(true, "Force semicolon.")

// Use CPPGC_STACK_ALLOCATED if the object is only stack allocated.

// Add the CPPGC_STACK_ALLOCATED_IGNORE annotation on a case-by-case basis when

// enforcement of CPPGC_STACK_ALLOCATED should be suppressed.

#if defined(__clang__)

#define CPPGC_STACK_ALLOCATED() \

public: \

using IsStackAllocatedTypeMarker CPPGC_UNUSED = int; \

\

private: \

void* operator new(size_t) = delete; \

void* operator new(size_t, void*) = delete; \

static_assert(true, "Force semicolon.")

#define CPPGC_STACK_ALLOCATED_IGNORE(bug_or_reason) \

__attribute__((annotate("stack_allocated_ignore")))

#define CPPGC_PLUGIN_IGNORE(bug_or_reason) \

__attribute__((annotate("blink_gc_plugin_ignore"), \

annotate("stack_allocated_ignore")))

#else // !defined(__clang__)

#define CPPGC_STACK_ALLOCATED() static_assert(true, "Force semicolon.")

#define CPPGC_STACK_ALLOCATED_IGNORE(bug_or_reason)

#define CPPGC_PLUGIN_IGNORE(bug_or_reason)

#endif // !defined(__clang__)

template <typename T>

concept IsStackAllocatedType =

requires { typename T::IsStackAllocatedTypeMarker; };

} // namespace cppgc

#endif // INCLUDE_CPPGC_MACROS_H_