llvm/clang/include/clang/AST/APNumericStorage.h

//===--- APNumericStorage.h - Store APInt/APFloat in ASTContext -*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_AST_APNUMERICSTORAGE_H
#define LLVM_CLANG_AST_APNUMERICSTORAGE_H

#include "llvm/ADT/APFloat.h"
#include "llvm/ADT/APInt.h"

namespace clang {
class ASTContext;

/// Used by IntegerLiteral/FloatingLiteral/EnumConstantDecl to store the
/// numeric without leaking memory.
///
/// For large floats/integers, APFloat/APInt will allocate memory from the heap
/// to represent these numbers.  Unfortunately, when we use a BumpPtrAllocator
/// to allocate IntegerLiteral/FloatingLiteral nodes the memory associated with
/// the APFloat/APInt values will never get freed. APNumericStorage uses
/// ASTContext's allocator for memory allocation.
class APNumericStorage { … };

class APIntStorage : private APNumericStorage { … };

class APFloatStorage : private APNumericStorage { … };

} // end namespace clang

#endif // LLVM_CLANG_AST_APNUMERICSTORAGE_H