llvm/clang/include/clang/Frontend/PrecompiledPreamble.h

//===--- PrecompiledPreamble.h - Build precompiled preambles ----*- 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
//
//===----------------------------------------------------------------------===//
//
// Helper class to build precompiled preamble.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_FRONTEND_PRECOMPILEDPREAMBLE_H
#define LLVM_CLANG_FRONTEND_PRECOMPILEDPREAMBLE_H

#include "clang/Lex/Lexer.h"
#include "clang/Lex/Preprocessor.h"
#include "llvm/ADT/IntrusiveRefCntPtr.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/MD5.h"
#include <cstddef>
#include <memory>
#include <system_error>
#include <type_traits>

namespace llvm {
class MemoryBuffer;
class MemoryBufferRef;
namespace vfs {
class FileSystem;
}
} // namespace llvm

namespace clang {
class CompilerInstance;
class CompilerInvocation;
class Decl;
class DeclGroupRef;
class PCHContainerOperations;

/// Runs lexer to compute suggested preamble bounds.
PreambleBounds ComputePreambleBounds(const LangOptions &LangOpts,
                                     const llvm::MemoryBufferRef &Buffer,
                                     unsigned MaxLines);

class PreambleCallbacks;

/// A class holding a PCH and all information to check whether it is valid to
/// reuse the PCH for the subsequent runs. Use BuildPreamble to create PCH and
/// CanReusePreamble + AddImplicitPreamble to make use of it.
class PrecompiledPreamble { … };

/// A set of callbacks to gather useful information while building a preamble.
class PreambleCallbacks { … };

enum class BuildPreambleError { … };

class BuildPreambleErrorCategory final : public std::error_category { … };

std::error_code make_error_code(BuildPreambleError Error);
} // namespace clang

template <>
struct std::is_error_code_enum<clang::BuildPreambleError> : std::true_type { … };

#endif