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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_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_
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