llvm/clang/lib/Serialization/ASTReaderInternals.h

//===- ASTReaderInternals.h - AST Reader Internals --------------*- 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
//
//===----------------------------------------------------------------------===//
//
//  This file provides internal definitions used in the AST reader.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_LIB_SERIALIZATION_ASTREADERINTERNALS_H
#define LLVM_CLANG_LIB_SERIALIZATION_ASTREADERINTERNALS_H

#include "MultiOnDiskHashTable.h"
#include "clang/AST/DeclarationName.h"
#include "clang/Basic/LLVM.h"
#include "clang/Serialization/ASTBitCodes.h"
#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/OnDiskHashTable.h"
#include <ctime>
#include <utility>

namespace clang {

class ASTReader;
class FileEntry;
struct HeaderFileInfo;
class HeaderSearch;
class ObjCMethodDecl;

namespace serialization {

class ModuleFile;

namespace reader {

/// Class that performs name lookup into a DeclContext stored
/// in an AST file.
class ASTDeclContextNameLookupTrait { … };

struct DeclContextLookupTable { … };

/// Base class for the trait describing the on-disk hash table for the
/// identifiers in an AST file.
///
/// This class is not useful by itself; rather, it provides common
/// functionality for accessing the on-disk hash table of identifiers
/// in an AST file. Different subclasses customize that functionality
/// based on what information they are interested in. Those subclasses
/// must provide the \c data_type type and the ReadData operation, only.
class ASTIdentifierLookupTraitBase { … };

/// Class that performs lookup for an identifier stored in an AST file.
class ASTIdentifierLookupTrait : public ASTIdentifierLookupTraitBase { … };

/// The on-disk hash table used to contain information about
/// all of the identifiers in the program.
ASTIdentifierLookupTable;

/// Class that performs lookup for a selector's entries in the global
/// method pool stored in an AST file.
class ASTSelectorLookupTrait { … };

/// The on-disk hash table used for the global method pool.
ASTSelectorLookupTable;

/// Trait class used to search the on-disk hash table containing all of
/// the header search information.
///
/// The on-disk hash table contains a mapping from each header path to
/// information about that header (how many times it has been included, its
/// controlling macro, etc.). Note that we actually hash based on the size
/// and mtime, and support "deep" comparisons of file names based on current
/// inode numbers, so that the search can cope with non-normalized path names
/// and symlinks.
class HeaderFileInfoTrait { … };

/// The on-disk hash table used for known header files.
HeaderFileInfoLookupTable;

} // namespace reader

} // namespace serialization

} // namespace clang

#endif // LLVM_CLANG_LIB_SERIALIZATION_ASTREADERINTERNALS_H