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// Copyright 2025 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_INTERNAL_CONDITIONAL_STACK_ALLOCATED_H_
#define INCLUDE_CPPGC_INTERNAL_CONDITIONAL_STACK_ALLOCATED_H_
#include <type_traits>
#include "cppgc/macros.h" // NOLINT(build/include_directory)
#include "cppgc/type-traits.h" // NOLINT(build/include_directory)
namespace cppgc {
namespace internal {
// Base class that is marked as stack allocated if T is either marked as stack
// allocated or a traceable type.
template <typename T>
class ConditionalStackAllocatedBase;
template <typename T>
concept RequiresStackAllocated =
!std::is_void_v<T> &&
(cppgc::IsStackAllocatedType<T> || cppgc::internal::IsTraceableV<T> ||
cppgc::IsGarbageCollectedOrMixinTypeV<T>);
template <typename T>
requires(RequiresStackAllocated<T>)
class ConditionalStackAllocatedBase<T> {
public:
CPPGC_STACK_ALLOCATED();
};
template <typename T>
requires(!RequiresStackAllocated<T>)
class ConditionalStackAllocatedBase<T> {};
} // namespace internal
} // namespace cppgc
#endif // INCLUDE_CPPGC_INTERNAL_CONDITIONAL_STACK_ALLOCATED_H_