Coverage Report

Created: 2021-06-15 06:44

/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/include/clang/Serialization/ASTReader.h
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//===- ASTReader.h - AST File Reader ----------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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//  This file defines the ASTReader class, which reads AST files.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_SERIALIZATION_ASTREADER_H
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#define LLVM_CLANG_SERIALIZATION_ASTREADER_H
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#include "clang/AST/Type.h"
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#include "clang/Basic/Diagnostic.h"
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#include "clang/Basic/DiagnosticOptions.h"
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#include "clang/Basic/IdentifierTable.h"
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#include "clang/Basic/OpenCLOptions.h"
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#include "clang/Basic/SourceLocation.h"
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#include "clang/Basic/Version.h"
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#include "clang/Lex/ExternalPreprocessorSource.h"
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#include "clang/Lex/HeaderSearch.h"
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#include "clang/Lex/PreprocessingRecord.h"
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#include "clang/Lex/PreprocessorOptions.h"
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#include "clang/Sema/ExternalSemaSource.h"
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#include "clang/Sema/IdentifierResolver.h"
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#include "clang/Sema/Sema.h"
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#include "clang/Serialization/ASTBitCodes.h"
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#include "clang/Serialization/ContinuousRangeMap.h"
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#include "clang/Serialization/ModuleFile.h"
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#include "clang/Serialization/ModuleFileExtension.h"
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#include "clang/Serialization/ModuleManager.h"
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/DenseSet.h"
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#include "llvm/ADT/IntrusiveRefCntPtr.h"
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#include "llvm/ADT/MapVector.h"
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#include "llvm/ADT/Optional.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/SetVector.h"
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#include "llvm/ADT/SmallPtrSet.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringMap.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ADT/iterator.h"
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#include "llvm/ADT/iterator_range.h"
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#include "llvm/Bitstream/BitstreamReader.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/Timer.h"
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#include "llvm/Support/VersionTuple.h"
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#include <cassert>
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#include <cstddef>
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#include <cstdint>
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#include <ctime>
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#include <deque>
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#include <memory>
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#include <set>
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#include <string>
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#include <utility>
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#include <vector>
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namespace clang {
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class ASTConsumer;
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class ASTContext;
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class ASTDeserializationListener;
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class ASTReader;
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class ASTRecordReader;
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class CXXTemporary;
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class Decl;
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class DeclarationName;
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class DeclaratorDecl;
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class DeclContext;
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class EnumDecl;
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class Expr;
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class FieldDecl;
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class FileEntry;
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class FileManager;
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class FileSystemOptions;
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class FunctionDecl;
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class GlobalModuleIndex;
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struct HeaderFileInfo;
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class HeaderSearchOptions;
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class LangOptions;
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class LazyASTUnresolvedSet;
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class MacroInfo;
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class InMemoryModuleCache;
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class NamedDecl;
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class NamespaceDecl;
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class ObjCCategoryDecl;
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class ObjCInterfaceDecl;
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class PCHContainerReader;
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class Preprocessor;
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class PreprocessorOptions;
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struct QualifierInfo;
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class Sema;
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class SourceManager;
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class Stmt;
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class SwitchCase;
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class TargetOptions;
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class Token;
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class TypedefNameDecl;
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class ValueDecl;
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class VarDecl;
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/// Abstract interface for callback invocations by the ASTReader.
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///
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/// While reading an AST file, the ASTReader will call the methods of the
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/// listener to pass on specific information. Some of the listener methods can
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/// return true to indicate to the ASTReader that the information (and
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/// consequently the AST file) is invalid.
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class ASTReaderListener {
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public:
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  virtual ~ASTReaderListener();
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  /// Receives the full Clang version information.
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  ///
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  /// \returns true to indicate that the version is invalid. Subclasses should
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  /// generally defer to this implementation.
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21
  virtual bool ReadFullVersionInformation(StringRef FullVersion) {
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    return FullVersion != getClangFullRepositoryVersion();
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21
  }
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17.8k
  virtual void ReadModuleName(StringRef ModuleName) {}
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18.8k
  virtual void ReadModuleMapFile(StringRef ModuleMapPath) {}
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  /// Receives the language options.
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  ///
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  /// \returns true to indicate the options are invalid or false otherwise.
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  virtual bool ReadLanguageOptions(const LangOptions &LangOpts,
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                                   bool Complain,
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1.63k
                                   bool AllowCompatibleDifferences) {
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    return false;
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  }
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  /// Receives the target options.
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  ///
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  /// \returns true to indicate the target options are invalid, or false
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  /// otherwise.
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  virtual bool ReadTargetOptions(const TargetOptions &TargetOpts, bool Complain,
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1.63k
                                 bool AllowCompatibleDifferences) {
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1.63k
    return false;
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1.63k
  }
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  /// Receives the diagnostic options.
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  ///
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  /// \returns true to indicate the diagnostic options are invalid, or false
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  /// otherwise.
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  virtual bool
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  ReadDiagnosticOptions(IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts,
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1.37k
                        bool Complain) {
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    return false;
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  }
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  /// Receives the file system options.
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  ///
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  /// \returns true to indicate the file system options are invalid, or false
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  /// otherwise.
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  virtual bool ReadFileSystemOptions(const FileSystemOptions &FSOpts,
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                                     bool Complain) {
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    return false;
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  }
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  /// Receives the header search options.
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  ///
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  /// \returns true to indicate the header search options are invalid, or false
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  /// otherwise.
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  virtual bool ReadHeaderSearchOptions(const HeaderSearchOptions &HSOpts,
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                                       StringRef SpecificModuleCachePath,
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                                       bool Complain) {
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1.21k
    return false;
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1.21k
  }
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  /// Receives the preprocessor options.
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  ///
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  /// \param SuggestedPredefines Can be filled in with the set of predefines
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  /// that are suggested by the preprocessor options. Typically only used when
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  /// loading a precompiled header.
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  ///
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  /// \returns true to indicate the preprocessor options are invalid, or false
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  /// otherwise.
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  virtual bool ReadPreprocessorOptions(const PreprocessorOptions &PPOpts,
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                                       bool Complain,
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813
                                       std::string &SuggestedPredefines) {
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    return false;
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813
  }
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  /// Receives __COUNTER__ value.
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  virtual void ReadCounter(const serialization::ModuleFile &M,
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1
                           unsigned Value) {}
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  /// This is called for each AST file loaded.
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  virtual void visitModuleFile(StringRef Filename,
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                               serialization::ModuleKind Kind) {}
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  /// Returns true if this \c ASTReaderListener wants to receive the
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  /// input files of the AST file via \c visitInputFile, false otherwise.
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446k
  virtual bool needsInputFileVisitation() { return false; }
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  /// Returns true if this \c ASTReaderListener wants to receive the
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  /// system input files of the AST file via \c visitInputFile, false otherwise.
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33
  virtual bool needsSystemInputFileVisitation() { return false; }
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  /// if \c needsInputFileVisitation returns true, this is called for
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  /// each non-system input file of the AST File. If
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  /// \c needsSystemInputFileVisitation is true, then it is called for all
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  /// system input files as well.
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  ///
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  /// \returns true to continue receiving the next input file, false to stop.
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  virtual bool visitInputFile(StringRef Filename, bool isSystem,
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0
                              bool isOverridden, bool isExplicitModule) {
214
0
    return true;
215
0
  }
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  /// Returns true if this \c ASTReaderListener wants to receive the
218
  /// imports of the AST file via \c visitImport, false otherwise.
219
12
  virtual bool needsImportVisitation() const { return false; }
220
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  /// If needsImportVisitation returns \c true, this is called for each
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  /// AST file imported by this AST file.
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0
  virtual void visitImport(StringRef ModuleName, StringRef Filename) {}
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225
  /// Indicates that a particular module file extension has been read.
226
  virtual void readModuleFileExtension(
227
0
                 const ModuleFileExtensionMetadata &Metadata) {}
228
};
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/// Simple wrapper class for chaining listeners.
231
class ChainedASTReaderListener : public ASTReaderListener {
232
  std::unique_ptr<ASTReaderListener> First;
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  std::unique_ptr<ASTReaderListener> Second;
234
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public:
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  /// Takes ownership of \p First and \p Second.
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  ChainedASTReaderListener(std::unique_ptr<ASTReaderListener> First,
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                           std::unique_ptr<ASTReaderListener> Second)
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1.35k
      : First(std::move(First)), Second(std::move(Second)) {}
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  std::unique_ptr<ASTReaderListener> takeFirst() { return std::move(First); }
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  std::unique_ptr<ASTReaderListener> takeSecond() { return std::move(Second); }
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  bool ReadFullVersionInformation(StringRef FullVersion) override;
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  void ReadModuleName(StringRef ModuleName) override;
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  void ReadModuleMapFile(StringRef ModuleMapPath) override;
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  bool ReadLanguageOptions(const LangOptions &LangOpts, bool Complain,
248
                           bool AllowCompatibleDifferences) override;
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  bool ReadTargetOptions(const TargetOptions &TargetOpts, bool Complain,
250
                         bool AllowCompatibleDifferences) override;
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  bool ReadDiagnosticOptions(IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts,
252
                             bool Complain) override;
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  bool ReadFileSystemOptions(const FileSystemOptions &FSOpts,
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                             bool Complain) override;
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  bool ReadHeaderSearchOptions(const HeaderSearchOptions &HSOpts,
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                               StringRef SpecificModuleCachePath,
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                               bool Complain) override;
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  bool ReadPreprocessorOptions(const PreprocessorOptions &PPOpts,
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                               bool Complain,
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                               std::string &SuggestedPredefines) override;
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  void ReadCounter(const serialization::ModuleFile &M, unsigned Value) override;
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  bool needsInputFileVisitation() override;
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  bool needsSystemInputFileVisitation() override;
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  void visitModuleFile(StringRef Filename,
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                       serialization::ModuleKind Kind) override;
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  bool visitInputFile(StringRef Filename, bool isSystem,
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                      bool isOverridden, bool isExplicitModule) override;
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  void readModuleFileExtension(
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         const ModuleFileExtensionMetadata &Metadata) override;
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};
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/// ASTReaderListener implementation to validate the information of
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/// the PCH file against an initialized Preprocessor.
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class PCHValidator : public ASTReaderListener {
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  Preprocessor &PP;
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  ASTReader &Reader;
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public:
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  PCHValidator(Preprocessor &PP, ASTReader &Reader)
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12.7k
      : PP(PP), Reader(Reader) {}
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  bool ReadLanguageOptions(const LangOptions &LangOpts, bool Complain,
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                           bool AllowCompatibleDifferences) override;
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  bool ReadTargetOptions(const TargetOptions &TargetOpts, bool Complain,
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                         bool AllowCompatibleDifferences) override;
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  bool ReadDiagnosticOptions(IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts,
289
                             bool Complain) override;
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  bool ReadPreprocessorOptions(const PreprocessorOptions &PPOpts, bool Complain,
291
                               std::string &SuggestedPredefines) override;
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  bool ReadHeaderSearchOptions(const HeaderSearchOptions &HSOpts,
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                               StringRef SpecificModuleCachePath,
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                               bool Complain) override;
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  void ReadCounter(const serialization::ModuleFile &M, unsigned Value) override;
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private:
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  void Error(const char *Msg);
299
};
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/// ASTReaderListenter implementation to set SuggestedPredefines of
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/// ASTReader which is required to use a pch file. This is the replacement
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/// of PCHValidator or SimplePCHValidator when using a pch file without
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/// validating it.
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class SimpleASTReaderListener : public ASTReaderListener {
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  Preprocessor &PP;
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public:
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  SimpleASTReaderListener(Preprocessor &PP) : PP(PP) {}
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  bool ReadPreprocessorOptions(const PreprocessorOptions &PPOpts, bool Complain,
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                               std::string &SuggestedPredefines) override;
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};
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namespace serialization {
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class ReadMethodPoolVisitor;
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namespace reader {
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class ASTIdentifierLookupTrait;
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/// The on-disk hash table(s) used for DeclContext name lookup.
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struct DeclContextLookupTable;
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} // namespace reader
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328
} // namespace serialization
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/// Reads an AST files chain containing the contents of a translation
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/// unit.
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///
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/// The ASTReader class reads bitstreams (produced by the ASTWriter
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/// class) containing the serialized representation of a given
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/// abstract syntax tree and its supporting data structures. An
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/// instance of the ASTReader can be attached to an ASTContext object,
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/// which will provide access to the contents of the AST files.
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///
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/// The AST reader provides lazy de-serialization of declarations, as
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/// required when traversing the AST. Only those AST nodes that are
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/// actually required will be de-serialized.
342
class ASTReader
343
  : public ExternalPreprocessorSource,
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    public ExternalPreprocessingRecordSource,
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    public ExternalHeaderFileInfoSource,
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    public ExternalSemaSource,
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    public IdentifierInfoLookup,
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    public ExternalSLocEntrySource
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{
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public:
351
  /// Types of AST files.
352
  friend class ASTDeclReader;
353
  friend class ASTIdentifierIterator;
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  friend class ASTRecordReader;
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  friend class ASTUnit; // ASTUnit needs to remap source locations.
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  friend class ASTWriter;
357
  friend class PCHValidator;
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  friend class serialization::reader::ASTIdentifierLookupTrait;
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  friend class serialization::ReadMethodPoolVisitor;
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  friend class TypeLocReader;
361
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  using RecordData = SmallVector<uint64_t, 64>;
363
  using RecordDataImpl = SmallVectorImpl<uint64_t>;
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  /// The result of reading the control block of an AST file, which
366
  /// can fail for various reasons.
367
  enum ASTReadResult {
368
    /// The control block was read successfully. Aside from failures,
369
    /// the AST file is safe to read into the current context.
370
    Success,
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372
    /// The AST file itself appears corrupted.
373
    Failure,
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375
    /// The AST file was missing.
376
    Missing,
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    /// The AST file is out-of-date relative to its input files,
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    /// and needs to be regenerated.
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    OutOfDate,
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382
    /// The AST file was written by a different version of Clang.
383
    VersionMismatch,
384
385
    /// The AST file was writtten with a different language/target
386
    /// configuration.
387
    ConfigurationMismatch,
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389
    /// The AST file has errors.
390
    HadErrors
391
  };
392
393
  using ModuleFile = serialization::ModuleFile;
394
  using ModuleKind = serialization::ModuleKind;
395
  using ModuleManager = serialization::ModuleManager;
396
  using ModuleIterator = ModuleManager::ModuleIterator;
397
  using ModuleConstIterator = ModuleManager::ModuleConstIterator;
398
  using ModuleReverseIterator = ModuleManager::ModuleReverseIterator;
399
400
private:
401
  /// The receiver of some callbacks invoked by ASTReader.
402
  std::unique_ptr<ASTReaderListener> Listener;
403
404
  /// The receiver of deserialization events.
405
  ASTDeserializationListener *DeserializationListener = nullptr;
406
407
  bool OwnsDeserializationListener = false;
408
409
  SourceManager &SourceMgr;
410
  FileManager &FileMgr;
411
  const PCHContainerReader &PCHContainerRdr;
412
  DiagnosticsEngine &Diags;
413
414
  /// The semantic analysis object that will be processing the
415
  /// AST files and the translation unit that uses it.
416
  Sema *SemaObj = nullptr;
417
418
  /// The preprocessor that will be loading the source file.
419
  Preprocessor &PP;
420
421
  /// The AST context into which we'll read the AST files.
422
  ASTContext *ContextObj = nullptr;
423
424
  /// The AST consumer.
425
  ASTConsumer *Consumer = nullptr;
426
427
  /// The module manager which manages modules and their dependencies
428
  ModuleManager ModuleMgr;
429
430
  /// A dummy identifier resolver used to merge TU-scope declarations in
431
  /// C, for the cases where we don't have a Sema object to provide a real
432
  /// identifier resolver.
433
  IdentifierResolver DummyIdResolver;
434
435
  /// A mapping from extension block names to module file extensions.
436
  llvm::StringMap<std::shared_ptr<ModuleFileExtension>> ModuleFileExtensions;
437
438
  /// A timer used to track the time spent deserializing.
439
  std::unique_ptr<llvm::Timer> ReadTimer;
440
441
  /// The location where the module file will be considered as
442
  /// imported from. For non-module AST types it should be invalid.
443
  SourceLocation CurrentImportLoc;
444
445
  /// The module kind that is currently deserializing.
446
  Optional<ModuleKind> CurrentDeserializingModuleKind;
447
448
  /// The global module index, if loaded.
449
  std::unique_ptr<GlobalModuleIndex> GlobalIndex;
450
451
  /// A map of global bit offsets to the module that stores entities
452
  /// at those bit offsets.
453
  ContinuousRangeMap<uint64_t, ModuleFile*, 4> GlobalBitOffsetsMap;
454
455
  /// A map of negated SLocEntryIDs to the modules containing them.
456
  ContinuousRangeMap<unsigned, ModuleFile*, 64> GlobalSLocEntryMap;
457
458
  using GlobalSLocOffsetMapType =
459
      ContinuousRangeMap<unsigned, ModuleFile *, 64>;
460
461
  /// A map of reversed (SourceManager::MaxLoadedOffset - SLocOffset)
462
  /// SourceLocation offsets to the modules containing them.
463
  GlobalSLocOffsetMapType GlobalSLocOffsetMap;
464
465
  /// Types that have already been loaded from the chain.
466
  ///
467
  /// When the pointer at index I is non-NULL, the type with
468
  /// ID = (I + 1) << FastQual::Width has already been loaded
469
  std::vector<QualType> TypesLoaded;
470
471
  using GlobalTypeMapType =
472
      ContinuousRangeMap<serialization::TypeID, ModuleFile *, 4>;
473
474
  /// Mapping from global type IDs to the module in which the
475
  /// type resides along with the offset that should be added to the
476
  /// global type ID to produce a local ID.
477
  GlobalTypeMapType GlobalTypeMap;
478
479
  /// Declarations that have already been loaded from the chain.
480
  ///
481
  /// When the pointer at index I is non-NULL, the declaration with ID
482
  /// = I + 1 has already been loaded.
483
  std::vector<Decl *> DeclsLoaded;
484
485
  using GlobalDeclMapType =
486
      ContinuousRangeMap<serialization::DeclID, ModuleFile *, 4>;
487
488
  /// Mapping from global declaration IDs to the module in which the
489
  /// declaration resides.
490
  GlobalDeclMapType GlobalDeclMap;
491
492
  using FileOffset = std::pair<ModuleFile *, uint64_t>;
493
  using FileOffsetsTy = SmallVector<FileOffset, 2>;
494
  using DeclUpdateOffsetsMap =
495
      llvm::DenseMap<serialization::DeclID, FileOffsetsTy>;
496
497
  /// Declarations that have modifications residing in a later file
498
  /// in the chain.
499
  DeclUpdateOffsetsMap DeclUpdateOffsets;
500
501
  struct PendingUpdateRecord {
502
    Decl *D;
503
    serialization::GlobalDeclID ID;
504
505
    // Whether the declaration was just deserialized.
506
    bool JustLoaded;
507
508
    PendingUpdateRecord(serialization::GlobalDeclID ID, Decl *D,
509
                        bool JustLoaded)
510
7.55M
        : D(D), ID(ID), JustLoaded(JustLoaded) {}
511
  };
512
513
  /// Declaration updates for already-loaded declarations that we need
514
  /// to apply once we finish processing an import.
515
  llvm::SmallVector<PendingUpdateRecord, 16> PendingUpdateRecords;
516
517
  enum class PendingFakeDefinitionKind { NotFake, Fake, FakeLoaded };
518
519
  /// The DefinitionData pointers that we faked up for class definitions
520
  /// that we needed but hadn't loaded yet.
521
  llvm::DenseMap<void *, PendingFakeDefinitionKind> PendingFakeDefinitionData;
522
523
  /// Exception specification updates that have been loaded but not yet
524
  /// propagated across the relevant redeclaration chain. The map key is the
525
  /// canonical declaration (used only for deduplication) and the value is a
526
  /// declaration that has an exception specification.
527
  llvm::SmallMapVector<Decl *, FunctionDecl *, 4> PendingExceptionSpecUpdates;
528
529
  /// Deduced return type updates that have been loaded but not yet propagated
530
  /// across the relevant redeclaration chain. The map key is the canonical
531
  /// declaration and the value is the deduced return type.
532
  llvm::SmallMapVector<FunctionDecl *, QualType, 4> PendingDeducedTypeUpdates;
533
534
  /// Declarations that have been imported and have typedef names for
535
  /// linkage purposes.
536
  llvm::DenseMap<std::pair<DeclContext *, IdentifierInfo *>, NamedDecl *>
537
      ImportedTypedefNamesForLinkage;
538
539
  /// Mergeable declaration contexts that have anonymous declarations
540
  /// within them, and those anonymous declarations.
541
  llvm::DenseMap<Decl*, llvm::SmallVector<NamedDecl*, 2>>
542
    AnonymousDeclarationsForMerging;
543
544
  /// Key used to identify LifetimeExtendedTemporaryDecl for merging,
545
  /// containing the lifetime-extending declaration and the mangling number.
546
  using LETemporaryKey = std::pair<Decl *, unsigned>;
547
548
  /// Map of already deserialiazed temporaries.
549
  llvm::DenseMap<LETemporaryKey, LifetimeExtendedTemporaryDecl *>
550
      LETemporaryForMerging;
551
552
  struct FileDeclsInfo {
553
    ModuleFile *Mod = nullptr;
554
    ArrayRef<serialization::LocalDeclID> Decls;
555
556
362k
    FileDeclsInfo() = default;
557
    FileDeclsInfo(ModuleFile *Mod, ArrayRef<serialization::LocalDeclID> Decls)
558
362k
        : Mod(Mod), Decls(Decls) {}
559
  };
560
561
  /// Map from a FileID to the file-level declarations that it contains.
562
  llvm::DenseMap<FileID, FileDeclsInfo> FileDeclIDs;
563
564
  /// An array of lexical contents of a declaration context, as a sequence of
565
  /// Decl::Kind, DeclID pairs.
566
  using LexicalContents = ArrayRef<llvm::support::unaligned_uint32_t>;
567
568
  /// Map from a DeclContext to its lexical contents.
569
  llvm::DenseMap<const DeclContext*, std::pair<ModuleFile*, LexicalContents>>
570
      LexicalDecls;
571
572
  /// Map from the TU to its lexical contents from each module file.
573
  std::vector<std::pair<ModuleFile*, LexicalContents>> TULexicalDecls;
574
575
  /// Map from a DeclContext to its lookup tables.
576
  llvm::DenseMap<const DeclContext *,
577
                 serialization::reader::DeclContextLookupTable> Lookups;
578
579
  // Updates for visible decls can occur for other contexts than just the
580
  // TU, and when we read those update records, the actual context may not
581
  // be available yet, so have this pending map using the ID as a key. It
582
  // will be realized when the context is actually loaded.
583
  struct PendingVisibleUpdate {
584
    ModuleFile *Mod;
585
    const unsigned char *Data;
586
  };
587
  using DeclContextVisibleUpdates = SmallVector<PendingVisibleUpdate, 1>;
588
589
  /// Updates to the visible declarations of declaration contexts that
590
  /// haven't been loaded yet.
591
  llvm::DenseMap<serialization::DeclID, DeclContextVisibleUpdates>
592
      PendingVisibleUpdates;
593
594
  /// The set of C++ or Objective-C classes that have forward
595
  /// declarations that have not yet been linked to their definitions.
596
  llvm::SmallPtrSet<Decl *, 4> PendingDefinitions;
597
598
  using PendingBodiesMap =
599
      llvm::MapVector<Decl *, uint64_t,
600
                      llvm::SmallDenseMap<Decl *, unsigned, 4>,
601
                      SmallVector<std::pair<Decl *, uint64_t>, 4>>;
602
603
  /// Functions or methods that have bodies that will be attached.
604
  PendingBodiesMap PendingBodies;
605
606
  /// Definitions for which we have added merged definitions but not yet
607
  /// performed deduplication.
608
  llvm::SetVector<NamedDecl *> PendingMergedDefinitionsToDeduplicate;
609
610
  /// Read the record that describes the lexical contents of a DC.
611
  bool ReadLexicalDeclContextStorage(ModuleFile &M,
612
                                     llvm::BitstreamCursor &Cursor,
613
                                     uint64_t Offset, DeclContext *DC);
614
615
  /// Read the record that describes the visible contents of a DC.
616
  bool ReadVisibleDeclContextStorage(ModuleFile &M,
617
                                     llvm::BitstreamCursor &Cursor,
618
                                     uint64_t Offset, serialization::DeclID ID);
619
620
  /// A vector containing identifiers that have already been
621
  /// loaded.
622
  ///
623
  /// If the pointer at index I is non-NULL, then it refers to the
624
  /// IdentifierInfo for the identifier with ID=I+1 that has already
625
  /// been loaded.
626
  std::vector<IdentifierInfo *> IdentifiersLoaded;
627
628
  using GlobalIdentifierMapType =
629
      ContinuousRangeMap<serialization::IdentID, ModuleFile *, 4>;
630
631
  /// Mapping from global identifier IDs to the module in which the
632
  /// identifier resides along with the offset that should be added to the
633
  /// global identifier ID to produce a local ID.
634
  GlobalIdentifierMapType GlobalIdentifierMap;
635
636
  /// A vector containing macros that have already been
637
  /// loaded.
638
  ///
639
  /// If the pointer at index I is non-NULL, then it refers to the
640
  /// MacroInfo for the identifier with ID=I+1 that has already
641
  /// been loaded.
642
  std::vector<MacroInfo *> MacrosLoaded;
643
644
  using LoadedMacroInfo =
645
      std::pair<IdentifierInfo *, serialization::SubmoduleID>;
646
647
  /// A set of #undef directives that we have loaded; used to
648
  /// deduplicate the same #undef information coming from multiple module
649
  /// files.
650
  llvm::DenseSet<LoadedMacroInfo> LoadedUndefs;
651
652
  using GlobalMacroMapType =
653
      ContinuousRangeMap<serialization::MacroID, ModuleFile *, 4>;
654
655
  /// Mapping from global macro IDs to the module in which the
656
  /// macro resides along with the offset that should be added to the
657
  /// global macro ID to produce a local ID.
658
  GlobalMacroMapType GlobalMacroMap;
659
660
  /// A vector containing submodules that have already been loaded.
661
  ///
662
  /// This vector is indexed by the Submodule ID (-1). NULL submodule entries
663
  /// indicate that the particular submodule ID has not yet been loaded.
664
  SmallVector<Module *, 2> SubmodulesLoaded;
665
666
  using GlobalSubmoduleMapType =
667
      ContinuousRangeMap<serialization::SubmoduleID, ModuleFile *, 4>;
668
669
  /// Mapping from global submodule IDs to the module file in which the
670
  /// submodule resides along with the offset that should be added to the
671
  /// global submodule ID to produce a local ID.
672
  GlobalSubmoduleMapType GlobalSubmoduleMap;
673
674
  /// A set of hidden declarations.
675
  using HiddenNames = SmallVector<Decl *, 2>;
676
  using HiddenNamesMapType = llvm::DenseMap<Module *, HiddenNames>;
677
678
  /// A mapping from each of the hidden submodules to the deserialized
679
  /// declarations in that submodule that could be made visible.
680
  HiddenNamesMapType HiddenNamesMap;
681
682
  /// A module import, export, or conflict that hasn't yet been resolved.
683
  struct UnresolvedModuleRef {
684
    /// The file in which this module resides.
685
    ModuleFile *File;
686
687
    /// The module that is importing or exporting.
688
    Module *Mod;
689
690
    /// The kind of module reference.
691
    enum { Import, Export, Conflict } Kind;
692
693
    /// The local ID of the module that is being exported.
694
    unsigned ID;
695
696
    /// Whether this is a wildcard export.
697
    unsigned IsWildcard : 1;
698
699
    /// String data.
700
    StringRef String;
701
  };
702
703
  /// The set of module imports and exports that still need to be
704
  /// resolved.
705
  SmallVector<UnresolvedModuleRef, 2> UnresolvedModuleRefs;
706
707
  /// A vector containing selectors that have already been loaded.
708
  ///
709
  /// This vector is indexed by the Selector ID (-1). NULL selector
710
  /// entries indicate that the particular selector ID has not yet
711
  /// been loaded.
712
  SmallVector<Selector, 16> SelectorsLoaded;
713
714
  using GlobalSelectorMapType =
715
      ContinuousRangeMap<serialization::SelectorID, ModuleFile *, 4>;
716
717
  /// Mapping from global selector IDs to the module in which the
718
  /// global selector ID to produce a local ID.
719
  GlobalSelectorMapType GlobalSelectorMap;
720
721
  /// The generation number of the last time we loaded data from the
722
  /// global method pool for this selector.
723
  llvm::DenseMap<Selector, unsigned> SelectorGeneration;
724
725
  /// Whether a selector is out of date. We mark a selector as out of date
726
  /// if we load another module after the method pool entry was pulled in.
727
  llvm::DenseMap<Selector, bool> SelectorOutOfDate;
728
729
  struct PendingMacroInfo {
730
    ModuleFile *M;
731
    /// Offset relative to ModuleFile::MacroOffsetsBase.
732
    uint32_t MacroDirectivesOffset;
733
734
    PendingMacroInfo(ModuleFile *M, uint32_t MacroDirectivesOffset)
735
1.64M
        : M(M), MacroDirectivesOffset(MacroDirectivesOffset) {}
736
  };
737
738
  using PendingMacroIDsMap =
739
      llvm::MapVector<IdentifierInfo *, SmallVector<PendingMacroInfo, 2>>;
740
741
  /// Mapping from identifiers that have a macro history to the global
742
  /// IDs have not yet been deserialized to the global IDs of those macros.
743
  PendingMacroIDsMap PendingMacroIDs;
744
745
  using GlobalPreprocessedEntityMapType =
746
      ContinuousRangeMap<unsigned, ModuleFile *, 4>;
747
748
  /// Mapping from global preprocessing entity IDs to the module in
749
  /// which the preprocessed entity resides along with the offset that should be
750
  /// added to the global preprocessing entity ID to produce a local ID.
751
  GlobalPreprocessedEntityMapType GlobalPreprocessedEntityMap;
752
753
  using GlobalSkippedRangeMapType =
754
      ContinuousRangeMap<unsigned, ModuleFile *, 4>;
755
756
  /// Mapping from global skipped range base IDs to the module in which
757
  /// the skipped ranges reside.
758
  GlobalSkippedRangeMapType GlobalSkippedRangeMap;
759
760
  /// \name CodeGen-relevant special data
761
  /// Fields containing data that is relevant to CodeGen.
762
  //@{
763
764
  /// The IDs of all declarations that fulfill the criteria of
765
  /// "interesting" decls.
766
  ///
767
  /// This contains the data loaded from all EAGERLY_DESERIALIZED_DECLS blocks
768
  /// in the chain. The referenced declarations are deserialized and passed to
769
  /// the consumer eagerly.
770
  SmallVector<serialization::DeclID, 16> EagerlyDeserializedDecls;
771
772
  /// The IDs of all tentative definitions stored in the chain.
773
  ///
774
  /// Sema keeps track of all tentative definitions in a TU because it has to
775
  /// complete them and pass them on to CodeGen. Thus, tentative definitions in
776
  /// the PCH chain must be eagerly deserialized.
777
  SmallVector<serialization::DeclID, 16> TentativeDefinitions;
778
779
  /// The IDs of all CXXRecordDecls stored in the chain whose VTables are
780
  /// used.
781
  ///
782
  /// CodeGen has to emit VTables for these records, so they have to be eagerly
783
  /// deserialized.
784
  SmallVector<serialization::DeclID, 64> VTableUses;
785
786
  /// A snapshot of the pending instantiations in the chain.
787
  ///
788
  /// This record tracks the instantiations that Sema has to perform at the
789
  /// end of the TU. It consists of a pair of values for every pending
790
  /// instantiation where the first value is the ID of the decl and the second
791
  /// is the instantiation location.
792
  SmallVector<serialization::DeclID, 64> PendingInstantiations;
793
794
  //@}
795
796
  /// \name DiagnosticsEngine-relevant special data
797
  /// Fields containing data that is used for generating diagnostics
798
  //@{
799
800
  /// A snapshot of Sema's unused file-scoped variable tracking, for
801
  /// generating warnings.
802
  SmallVector<serialization::DeclID, 16> UnusedFileScopedDecls;
803
804
  /// A list of all the delegating constructors we've seen, to diagnose
805
  /// cycles.
806
  SmallVector<serialization::DeclID, 4> DelegatingCtorDecls;
807
808
  /// Method selectors used in a @selector expression. Used for
809
  /// implementation of -Wselector.
810
  SmallVector<serialization::SelectorID, 64> ReferencedSelectorsData;
811
812
  /// A snapshot of Sema's weak undeclared identifier tracking, for
813
  /// generating warnings.
814
  SmallVector<serialization::IdentifierID, 64> WeakUndeclaredIdentifiers;
815
816
  /// The IDs of type aliases for ext_vectors that exist in the chain.
817
  ///
818
  /// Used by Sema for finding sugared names for ext_vectors in diagnostics.
819
  SmallVector<serialization::DeclID, 4> ExtVectorDecls;
820
821
  //@}
822
823
  /// \name Sema-relevant special data
824
  /// Fields containing data that is used for semantic analysis
825
  //@{
826
827
  /// The IDs of all potentially unused typedef names in the chain.
828
  ///
829
  /// Sema tracks these to emit warnings.
830
  SmallVector<serialization::DeclID, 16> UnusedLocalTypedefNameCandidates;
831
832
  /// Our current depth in #pragma cuda force_host_device begin/end
833
  /// macros.
834
  unsigned ForceCUDAHostDeviceDepth = 0;
835
836
  /// The IDs of the declarations Sema stores directly.
837
  ///
838
  /// Sema tracks a few important decls, such as namespace std, directly.
839
  SmallVector<serialization::DeclID, 4> SemaDeclRefs;
840
841
  /// The IDs of the types ASTContext stores directly.
842
  ///
843
  /// The AST context tracks a few important types, such as va_list, directly.
844
  SmallVector<serialization::TypeID, 16> SpecialTypes;
845
846
  /// The IDs of CUDA-specific declarations ASTContext stores directly.
847
  ///
848
  /// The AST context tracks a few important decls, currently cudaConfigureCall,
849
  /// directly.
850
  SmallVector<serialization::DeclID, 2> CUDASpecialDeclRefs;
851
852
  /// The floating point pragma option settings.
853
  SmallVector<uint64_t, 1> FPPragmaOptions;
854
855
  /// The pragma clang optimize location (if the pragma state is "off").
856
  SourceLocation OptimizeOffPragmaLocation;
857
858
  /// The PragmaMSStructKind pragma ms_struct state if set, or -1.
859
  int PragmaMSStructState = -1;
860
861
  /// The PragmaMSPointersToMembersKind pragma pointers_to_members state.
862
  int PragmaMSPointersToMembersState = -1;
863
  SourceLocation PointersToMembersPragmaLocation;
864
865
  /// The pragma float_control state.
866
  Optional<FPOptionsOverride> FpPragmaCurrentValue;
867
  SourceLocation FpPragmaCurrentLocation;
868
  struct FpPragmaStackEntry {
869
    FPOptionsOverride Value;
870
    SourceLocation Location;
871
    SourceLocation PushLocation;
872
    StringRef SlotLabel;
873
  };
874
  llvm::SmallVector<FpPragmaStackEntry, 2> FpPragmaStack;
875
  llvm::SmallVector<std::string, 2> FpPragmaStrings;
876
877
  /// The pragma align/pack state.
878
  Optional<Sema::AlignPackInfo> PragmaAlignPackCurrentValue;
879
  SourceLocation PragmaAlignPackCurrentLocation;
880
  struct PragmaAlignPackStackEntry {
881
    Sema::AlignPackInfo Value;
882
    SourceLocation Location;
883
    SourceLocation PushLocation;
884
    StringRef SlotLabel;
885
  };
886
  llvm::SmallVector<PragmaAlignPackStackEntry, 2> PragmaAlignPackStack;
887
  llvm::SmallVector<std::string, 2> PragmaAlignPackStrings;
888
889
  /// The OpenCL extension settings.
890
  OpenCLOptions OpenCLExtensions;
891
892
  /// Extensions required by an OpenCL type.
893
  llvm::DenseMap<const Type *, std::set<std::string>> OpenCLTypeExtMap;
894
895
  /// Extensions required by an OpenCL declaration.
896
  llvm::DenseMap<const Decl *, std::set<std::string>> OpenCLDeclExtMap;
897
898
  /// A list of the namespaces we've seen.
899
  SmallVector<serialization::DeclID, 4> KnownNamespaces;
900
901
  /// A list of undefined decls with internal linkage followed by the
902
  /// SourceLocation of a matching ODR-use.
903
  SmallVector<serialization::DeclID, 8> UndefinedButUsed;
904
905
  /// Delete expressions to analyze at the end of translation unit.
906
  SmallVector<uint64_t, 8> DelayedDeleteExprs;
907
908
  // A list of late parsed template function data with their module files.
909
  SmallVector<std::pair<ModuleFile *, SmallVector<uint64_t, 1>>, 4>
910
      LateParsedTemplates;
911
912
  /// The IDs of all decls to be checked for deferred diags.
913
  ///
914
  /// Sema tracks these to emit deferred diags.
915
  llvm::SmallSetVector<serialization::DeclID, 4> DeclsToCheckForDeferredDiags;
916
917
public:
918
  struct ImportedSubmodule {
919
    serialization::SubmoduleID ID;
920
    SourceLocation ImportLoc;
921
922
    ImportedSubmodule(serialization::SubmoduleID ID, SourceLocation ImportLoc)
923
72
        : ID(ID), ImportLoc(ImportLoc) {}
924
  };
925
926
private:
927
  /// A list of modules that were imported by precompiled headers or
928
  /// any other non-module AST file.
929
  SmallVector<ImportedSubmodule, 2> ImportedModules;
930
  //@}
931
932
  /// The system include root to be used when loading the
933
  /// precompiled header.
934
  std::string isysroot;
935
936
  /// Whether to disable the normal validation performed on precompiled
937
  /// headers and module files when they are loaded.
938
  DisableValidationForModuleKind DisableValidationKind;
939
940
  /// Whether to accept an AST file with compiler errors.
941
  bool AllowASTWithCompilerErrors;
942
943
  /// Whether to accept an AST file that has a different configuration
944
  /// from the current compiler instance.
945
  bool AllowConfigurationMismatch;
946
947
  /// Whether validate system input files.
948
  bool ValidateSystemInputs;
949
950
  /// Whether validate headers and module maps using hash based on contents.
951
  bool ValidateASTInputFilesContent;
952
953
  /// Whether we are allowed to use the global module index.
954
  bool UseGlobalIndex;
955
956
  /// Whether we have tried loading the global module index yet.
957
  bool TriedLoadingGlobalIndex = false;
958
959
  ///Whether we are currently processing update records.
960
  bool ProcessingUpdateRecords = false;
961
962
  using SwitchCaseMapTy = llvm::DenseMap<unsigned, SwitchCase *>;
963
964
  /// Mapping from switch-case IDs in the chain to switch-case statements
965
  ///
966
  /// Statements usually don't have IDs, but switch cases need them, so that the
967
  /// switch statement can refer to them.
968
  SwitchCaseMapTy SwitchCaseStmts;
969
970
  SwitchCaseMapTy *CurrSwitchCaseStmts;
971
972
  /// The number of source location entries de-serialized from
973
  /// the PCH file.
974
  unsigned NumSLocEntriesRead = 0;
975
976
  /// The number of source location entries in the chain.
977
  unsigned TotalNumSLocEntries = 0;
978
979
  /// The number of statements (and expressions) de-serialized
980
  /// from the chain.
981
  unsigned NumStatementsRead = 0;
982
983
  /// The total number of statements (and expressions) stored
984
  /// in the chain.
985
  unsigned TotalNumStatements = 0;
986
987
  /// The number of macros de-serialized from the chain.
988
  unsigned NumMacrosRead = 0;
989
990
  /// The total number of macros stored in the chain.
991
  unsigned TotalNumMacros = 0;
992
993
  /// The number of lookups into identifier tables.
994
  unsigned NumIdentifierLookups = 0;
995
996
  /// The number of lookups into identifier tables that succeed.
997
  unsigned NumIdentifierLookupHits = 0;
998
999
  /// The number of selectors that have been read.
1000
  unsigned NumSelectorsRead = 0;
1001
1002
  /// The number of method pool entries that have been read.
1003
  unsigned NumMethodPoolEntriesRead = 0;
1004
1005
  /// The number of times we have looked up a selector in the method
1006
  /// pool.
1007
  unsigned NumMethodPoolLookups = 0;
1008
1009
  /// The number of times we have looked up a selector in the method
1010
  /// pool and found something.
1011
  unsigned NumMethodPoolHits = 0;
1012
1013
  /// The number of times we have looked up a selector in the method
1014
  /// pool within a specific module.
1015
  unsigned NumMethodPoolTableLookups = 0;
1016
1017
  /// The number of times we have looked up a selector in the method
1018
  /// pool within a specific module and found something.
1019
  unsigned NumMethodPoolTableHits = 0;
1020
1021
  /// The total number of method pool entries in the selector table.
1022
  unsigned TotalNumMethodPoolEntries = 0;
1023
1024
  /// Number of lexical decl contexts read/total.
1025
  unsigned NumLexicalDeclContextsRead = 0, TotalLexicalDeclContexts = 0;
1026
1027
  /// Number of visible decl contexts read/total.
1028
  unsigned NumVisibleDeclContextsRead = 0, TotalVisibleDeclContexts = 0;
1029
1030
  /// Total size of modules, in bits, currently loaded
1031
  uint64_t TotalModulesSizeInBits = 0;
1032
1033
  /// Number of Decl/types that are currently deserializing.
1034
  unsigned NumCurrentElementsDeserializing = 0;
1035
1036
  /// Set true while we are in the process of passing deserialized
1037
  /// "interesting" decls to consumer inside FinishedDeserializing().
1038
  /// This is used as a guard to avoid recursively repeating the process of
1039
  /// passing decls to consumer.
1040
  bool PassingDeclsToConsumer = false;
1041
1042
  /// The set of identifiers that were read while the AST reader was
1043
  /// (recursively) loading declarations.
1044
  ///
1045
  /// The declarations on the identifier chain for these identifiers will be
1046
  /// loaded once the recursive loading has completed.
1047
  llvm::MapVector<IdentifierInfo *, SmallVector<uint32_t, 4>>
1048
    PendingIdentifierInfos;
1049
1050
  /// The set of lookup results that we have faked in order to support
1051
  /// merging of partially deserialized decls but that we have not yet removed.
1052
  llvm::SmallMapVector<IdentifierInfo *, SmallVector<NamedDecl*, 2>, 16>
1053
    PendingFakeLookupResults;
1054
1055
  /// The generation number of each identifier, which keeps track of
1056
  /// the last time we loaded information about this identifier.
1057
  llvm::DenseMap<IdentifierInfo *, unsigned> IdentifierGeneration;
1058
1059
  class InterestingDecl {
1060
    Decl *D;
1061
    bool DeclHasPendingBody;
1062
1063
  public:
1064
    InterestingDecl(Decl *D, bool HasBody)
1065
7.53M
        : D(D), DeclHasPendingBody(HasBody) {}
1066
1067
7.99M
    Decl *getDecl() { return D; }
1068
1069
    /// Whether the declaration has a pending body.
1070
7.51M
    bool hasPendingBody() { return DeclHasPendingBody; }
1071
  };
1072
1073
  /// Contains declarations and definitions that could be
1074
  /// "interesting" to the ASTConsumer, when we get that AST consumer.
1075
  ///
1076
  /// "Interesting" declarations are those that have data that may
1077
  /// need to be emitted, such as inline function definitions or
1078
  /// Objective-C protocols.
1079
  std::deque<InterestingDecl> PotentiallyInterestingDecls;
1080
1081
  /// The list of deduced function types that we have not yet read, because
1082
  /// they might contain a deduced return type that refers to a local type
1083
  /// declared within the function.
1084
  SmallVector<std::pair<FunctionDecl *, serialization::TypeID>, 16>
1085
      PendingFunctionTypes;
1086
1087
  /// The list of redeclaration chains that still need to be
1088
  /// reconstructed, and the local offset to the corresponding list
1089
  /// of redeclarations.
1090
  SmallVector<std::pair<Decl *, uint64_t>, 16> PendingDeclChains;
1091
1092
  /// The list of canonical declarations whose redeclaration chains
1093
  /// need to be marked as incomplete once we're done deserializing things.
1094
  SmallVector<Decl *, 16> PendingIncompleteDeclChains;
1095
1096
  /// The Decl IDs for the Sema/Lexical DeclContext of a Decl that has
1097
  /// been loaded but its DeclContext was not set yet.
1098
  struct PendingDeclContextInfo {
1099
    Decl *D;
1100
    serialization::GlobalDeclID SemaDC;
1101
    serialization::GlobalDeclID LexicalDC;
1102
  };
1103
1104
  /// The set of Decls that have been loaded but their DeclContexts are
1105
  /// not set yet.
1106
  ///
1107
  /// The DeclContexts for these Decls will be set once recursive loading has
1108
  /// been completed.
1109
  std::deque<PendingDeclContextInfo> PendingDeclContextInfos;
1110
1111
  /// The set of NamedDecls that have been loaded, but are members of a
1112
  /// context that has been merged into another context where the corresponding
1113
  /// declaration is either missing or has not yet been loaded.
1114
  ///
1115
  /// We will check whether the corresponding declaration is in fact missing
1116
  /// once recursing loading has been completed.
1117
  llvm::SmallVector<NamedDecl *, 16> PendingOdrMergeChecks;
1118
1119
  using DataPointers =
1120
      std::pair<CXXRecordDecl *, struct CXXRecordDecl::DefinitionData *>;
1121
1122
  /// Record definitions in which we found an ODR violation.
1123
  llvm::SmallDenseMap<CXXRecordDecl *, llvm::SmallVector<DataPointers, 2>, 2>
1124
      PendingOdrMergeFailures;
1125
1126
  /// Function definitions in which we found an ODR violation.
1127
  llvm::SmallDenseMap<FunctionDecl *, llvm::SmallVector<FunctionDecl *, 2>, 2>
1128
      PendingFunctionOdrMergeFailures;
1129
1130
  /// Enum definitions in which we found an ODR violation.
1131
  llvm::SmallDenseMap<EnumDecl *, llvm::SmallVector<EnumDecl *, 2>, 2>
1132
      PendingEnumOdrMergeFailures;
1133
1134
  /// DeclContexts in which we have diagnosed an ODR violation.
1135
  llvm::SmallPtrSet<DeclContext*, 2> DiagnosedOdrMergeFailures;
1136
1137
  /// The set of Objective-C categories that have been deserialized
1138
  /// since the last time the declaration chains were linked.
1139
  llvm::SmallPtrSet<ObjCCategoryDecl *, 16> CategoriesDeserialized;
1140
1141
  /// The set of Objective-C class definitions that have already been
1142
  /// loaded, for which we will need to check for categories whenever a new
1143
  /// module is loaded.
1144
  SmallVector<ObjCInterfaceDecl *, 16> ObjCClassesLoaded;
1145
1146
  using KeyDeclsMap =
1147
      llvm::DenseMap<Decl *, SmallVector<serialization::DeclID, 2>>;
1148
1149
  /// A mapping from canonical declarations to the set of global
1150
  /// declaration IDs for key declaration that have been merged with that
1151
  /// canonical declaration. A key declaration is a formerly-canonical
1152
  /// declaration whose module did not import any other key declaration for that
1153
  /// entity. These are the IDs that we use as keys when finding redecl chains.
1154
  KeyDeclsMap KeyDecls;
1155
1156
  /// A mapping from DeclContexts to the semantic DeclContext that we
1157
  /// are treating as the definition of the entity. This is used, for instance,
1158
  /// when merging implicit instantiations of class templates across modules.
1159
  llvm::DenseMap<DeclContext *, DeclContext *> MergedDeclContexts;
1160
1161
  /// A mapping from canonical declarations of enums to their canonical
1162
  /// definitions. Only populated when using modules in C++.
1163
  llvm::DenseMap<EnumDecl *, EnumDecl *> EnumDefinitions;
1164
1165
  /// When reading a Stmt tree, Stmt operands are placed in this stack.
1166
  SmallVector<Stmt *, 16> StmtStack;
1167
1168
  /// What kind of records we are reading.
1169
  enum ReadingKind {
1170
    Read_None, Read_Decl, Read_Type, Read_Stmt
1171
  };
1172
1173
  /// What kind of records we are reading.
1174
  ReadingKind ReadingKind = Read_None;
1175
1176
  /// RAII object to change the reading kind.
1177
  class ReadingKindTracker {
1178
    ASTReader &Reader;
1179
    enum ReadingKind PrevKind;
1180
1181
  public:
1182
    ReadingKindTracker(enum ReadingKind newKind, ASTReader &reader)
1183
24.2M
        : Reader(reader), PrevKind(Reader.ReadingKind) {
1184
24.2M
      Reader.ReadingKind = newKind;
1185
24.2M
    }
1186
1187
    ReadingKindTracker(const ReadingKindTracker &) = delete;
1188
    ReadingKindTracker &operator=(const ReadingKindTracker &) = delete;
1189
24.2M
    ~ReadingKindTracker() { Reader.ReadingKind = PrevKind; }
1190
  };
1191
1192
  /// RAII object to mark the start of processing updates.
1193
  class ProcessingUpdatesRAIIObj {
1194
    ASTReader &Reader;
1195
    bool PrevState;
1196
1197
  public:
1198
    ProcessingUpdatesRAIIObj(ASTReader &reader)
1199
7.55M
        : Reader(reader), PrevState(Reader.ProcessingUpdateRecords) {
1200
7.55M
      Reader.ProcessingUpdateRecords = true;
1201
7.55M
    }
1202
1203
    ProcessingUpdatesRAIIObj(const ProcessingUpdatesRAIIObj &) = delete;
1204
    ProcessingUpdatesRAIIObj &
1205
    operator=(const ProcessingUpdatesRAIIObj &) = delete;
1206
7.55M
    ~ProcessingUpdatesRAIIObj() { Reader.ProcessingUpdateRecords = PrevState; }
1207
  };
1208
1209
  /// Suggested contents of the predefines buffer, after this
1210
  /// PCH file has been processed.
1211
  ///
1212
  /// In most cases, this string will be empty, because the predefines
1213
  /// buffer computed to build the PCH file will be identical to the
1214
  /// predefines buffer computed from the command line. However, when
1215
  /// there are differences that the PCH reader can work around, this
1216
  /// predefines buffer may contain additional definitions.
1217
  std::string SuggestedPredefines;
1218
1219
  llvm::DenseMap<const Decl *, bool> DefinitionSource;
1220
1221
  bool shouldDisableValidationForFile(const serialization::ModuleFile &M) const;
1222
1223
  /// Reads a statement from the specified cursor.
1224
  Stmt *ReadStmtFromStream(ModuleFile &F);
1225
1226
  struct InputFileInfo {
1227
    std::string Filename;
1228
    uint64_t ContentHash;
1229
    off_t StoredSize;
1230
    time_t StoredTime;
1231
    bool Overridden;
1232
    bool Transient;
1233
    bool TopLevelModuleMap;
1234
  };
1235
1236
  /// Reads the stored information about an input file.
1237
  InputFileInfo readInputFileInfo(ModuleFile &F, unsigned ID);
1238
1239
  /// Retrieve the file entry and 'overridden' bit for an input
1240
  /// file in the given module file.
1241
  serialization::InputFile getInputFile(ModuleFile &F, unsigned ID,
1242
                                        bool Complain = true);
1243
1244
public:
1245
  void ResolveImportedPath(ModuleFile &M, std::string &Filename);
1246
  static void ResolveImportedPath(std::string &Filename, StringRef Prefix);
1247
1248
  /// Returns the first key declaration for the given declaration. This
1249
  /// is one that is formerly-canonical (or still canonical) and whose module
1250
  /// did not import any other key declaration of the entity.
1251
4.95k
  Decl *getKeyDeclaration(Decl *D) {
1252
4.95k
    D = D->getCanonicalDecl();
1253
4.95k
    if (D->isFromASTFile())
1254
3.50k
      return D;
1255
1256
1.44k
    auto I = KeyDecls.find(D);
1257
1.44k
    if (I == KeyDecls.end() || 
I->second.empty()40
)
1258
1.40k
      return D;
1259
40
    return GetExistingDecl(I->second[0]);
1260
1.44k
  }
1261
123
  const Decl *getKeyDeclaration(const Decl *D) {
1262
123
    return getKeyDeclaration(const_cast<Decl*>(D));
1263
123
  }
1264
1265
  /// Run a callback on each imported key declaration of \p D.
1266
  template <typename Fn>
1267
30.9k
  void forEachImportedKeyDecl(const Decl *D, Fn Visit) {
1268
30.9k
    D = D->getCanonicalDecl();
1269
30.9k
    if (D->isFromASTFile())
1270
30
      Visit(D);
1271
1272
30.9k
    auto It = KeyDecls.find(const_cast<Decl*>(D));
1273
30.9k
    if (It != KeyDecls.end())
1274
5
      for (auto ID : It->second)
1275
11
        Visit(GetExistingDecl(ID));
1276
30.9k
  }
ASTWriter.cpp:void clang::ASTReader::forEachImportedKeyDecl<clang::ASTWriter::ResolvedExceptionSpec(clang::FunctionDecl const*)::$_11>(clang::Decl const*, clang::ASTWriter::ResolvedExceptionSpec(clang::FunctionDecl const*)::$_11)
Line
Count
Source
1267
30.8k
  void forEachImportedKeyDecl(const Decl *D, Fn Visit) {
1268
30.8k
    D = D->getCanonicalDecl();
1269
30.8k
    if (D->isFromASTFile())
1270
25
      Visit(D);
1271
1272
30.8k
    auto It = KeyDecls.find(const_cast<Decl*>(D));
1273
30.8k
    if (It != KeyDecls.end())
1274
3
      for (auto ID : It->second)
1275
9
        Visit(GetExistingDecl(ID));
1276
30.8k
  }
ASTWriter.cpp:void clang::ASTReader::forEachImportedKeyDecl<clang::ASTWriter::DeducedReturnType(clang::FunctionDecl const*, clang::QualType)::$_12>(clang::Decl const*, clang::ASTWriter::DeducedReturnType(clang::FunctionDecl const*, clang::QualType)::$_12)
Line
Count
Source
1267
40
  void forEachImportedKeyDecl(const Decl *D, Fn Visit) {
1268
40
    D = D->getCanonicalDecl();
1269
40
    if (D->isFromASTFile())
1270
2
      Visit(D);
1271
1272
40
    auto It = KeyDecls.find(const_cast<Decl*>(D));
1273
40
    if (It != KeyDecls.end())
1274
0
      for (auto ID : It->second)
1275
0
        Visit(GetExistingDecl(ID));
1276
40
  }
ASTWriter.cpp:void clang::ASTReader::forEachImportedKeyDecl<clang::ASTWriter::ResolvedOperatorDelete(clang::CXXDestructorDecl const*, clang::FunctionDecl const*, clang::Expr*)::$_13>(clang::Decl const*, clang::ASTWriter::ResolvedOperatorDelete(clang::CXXDestructorDecl const*, clang::FunctionDecl const*, clang::Expr*)::$_13)
Line
Count
Source
1267
42
  void forEachImportedKeyDecl(const Decl *D, Fn Visit) {
1268
42
    D = D->getCanonicalDecl();
1269
42
    if (D->isFromASTFile())
1270
3
      Visit(D);
1271
1272
42
    auto It = KeyDecls.find(const_cast<Decl*>(D));
1273
42
    if (It != KeyDecls.end())
1274
2
      for (auto ID : It->second)
1275
2
        Visit(GetExistingDecl(ID));
1276
42
  }
1277
1278
  /// Get the loaded lookup tables for \p Primary, if any.
1279
  const serialization::reader::DeclContextLookupTable *
1280
  getLoadedLookupTables(DeclContext *Primary) const;
1281
1282
private:
1283
  struct ImportedModule {
1284
    ModuleFile *Mod;
1285
    ModuleFile *ImportedBy;
1286
    SourceLocation ImportLoc;
1287
1288
    ImportedModule(ModuleFile *Mod,
1289
                   ModuleFile *ImportedBy,
1290
                   SourceLocation ImportLoc)
1291
17.6k
        : Mod(Mod), ImportedBy(ImportedBy), ImportLoc(ImportLoc) {}
1292
  };
1293
1294
  ASTReadResult ReadASTCore(StringRef FileName, ModuleKind Type,
1295
                            SourceLocation ImportLoc, ModuleFile *ImportedBy,
1296
                            SmallVectorImpl<ImportedModule> &Loaded,
1297
                            off_t ExpectedSize, time_t ExpectedModTime,
1298
                            ASTFileSignature ExpectedSignature,
1299
                            unsigned ClientLoadCapabilities);
1300
  ASTReadResult ReadControlBlock(ModuleFile &F,
1301
                                 SmallVectorImpl<ImportedModule> &Loaded,
1302
                                 const ModuleFile *ImportedBy,
1303
                                 unsigned ClientLoadCapabilities);
1304
  static ASTReadResult ReadOptionsBlock(
1305
      llvm::BitstreamCursor &Stream, unsigned ClientLoadCapabilities,
1306
      bool AllowCompatibleConfigurationMismatch, ASTReaderListener &Listener,
1307
      std::string &SuggestedPredefines);
1308
1309
  /// Read the unhashed control block.
1310
  ///
1311
  /// This has no effect on \c F.Stream, instead creating a fresh cursor from
1312
  /// \c F.Data and reading ahead.
1313
  ASTReadResult readUnhashedControlBlock(ModuleFile &F, bool WasImportedBy,
1314
                                         unsigned ClientLoadCapabilities);
1315
1316
  static ASTReadResult
1317
  readUnhashedControlBlockImpl(ModuleFile *F, llvm::StringRef StreamData,
1318
                               unsigned ClientLoadCapabilities,
1319
                               bool AllowCompatibleConfigurationMismatch,
1320
                               ASTReaderListener *Listener,
1321
                               bool ValidateDiagnosticOptions);
1322
1323
  ASTReadResult ReadASTBlock(ModuleFile &F, unsigned ClientLoadCapabilities);
1324
  ASTReadResult ReadExtensionBlock(ModuleFile &F);
1325
  void ReadModuleOffsetMap(ModuleFile &F) const;
1326
  bool ParseLineTable(ModuleFile &F, const RecordData &Record);
1327
  bool ReadSourceManagerBlock(ModuleFile &F);
1328
  llvm::BitstreamCursor &SLocCursorForID(int ID);
1329
  SourceLocation getImportLocation(ModuleFile *F);
1330
  ASTReadResult ReadModuleMapFileBlock(RecordData &Record, ModuleFile &F,
1331
                                       const ModuleFile *ImportedBy,
1332
                                       unsigned ClientLoadCapabilities);
1333
  ASTReadResult ReadSubmoduleBlock(ModuleFile &F,
1334
                                   unsigned ClientLoadCapabilities);
1335
  static bool ParseLanguageOptions(const RecordData &Record, bool Complain,
1336
                                   ASTReaderListener &Listener,
1337
                                   bool AllowCompatibleDifferences);
1338
  static bool ParseTargetOptions(const RecordData &Record, bool Complain,
1339
                                 ASTReaderListener &Listener,
1340
                                 bool AllowCompatibleDifferences);
1341
  static bool ParseDiagnosticOptions(const RecordData &Record, bool Complain,
1342
                                     ASTReaderListener &Listener);
1343
  static bool ParseFileSystemOptions(const RecordData &Record, bool Complain,
1344
                                     ASTReaderListener &Listener);
1345
  static bool ParseHeaderSearchOptions(const RecordData &Record, bool Complain,
1346
                                       ASTReaderListener &Listener);
1347
  static bool ParsePreprocessorOptions(const RecordData &Record, bool Complain,
1348
                                       ASTReaderListener &Listener,
1349
                                       std::string &SuggestedPredefines);
1350
1351
  struct RecordLocation {
1352
    ModuleFile *F;
1353
    uint64_t Offset;
1354
1355
15.3M
    RecordLocation(ModuleFile *M, uint64_t O) : F(M), Offset(O) {}
1356
  };
1357
1358
  QualType readTypeRecord(unsigned Index);
1359
  RecordLocation TypeCursorForIndex(unsigned Index);
1360
  void LoadedDecl(unsigned Index, Decl *D);
1361
  Decl *ReadDeclRecord(serialization::DeclID ID);
1362
  void markIncompleteDeclChain(Decl *Canon);
1363
1364
  /// Returns the most recent declaration of a declaration (which must be
1365
  /// of a redeclarable kind) that is either local or has already been loaded
1366
  /// merged into its redecl chain.
1367
  Decl *getMostRecentExistingDecl(Decl *D);
1368
1369
  RecordLocation DeclCursorForID(serialization::DeclID ID,
1370
                                 SourceLocation &Location);
1371
  void loadDeclUpdateRecords(PendingUpdateRecord &Record);
1372
  void loadPendingDeclChain(Decl *D, uint64_t LocalOffset);
1373
  void loadObjCCategories(serialization::GlobalDeclID ID, ObjCInterfaceDecl *D,
1374
                          unsigned PreviousGeneration = 0);
1375
1376
  RecordLocation getLocalBitOffset(uint64_t GlobalOffset);
1377
  uint64_t getGlobalBitOffset(ModuleFile &M, uint64_t LocalOffset);
1378
1379
  /// Returns the first preprocessed entity ID that begins or ends after
1380
  /// \arg Loc.
1381
  serialization::PreprocessedEntityID
1382
  findPreprocessedEntity(SourceLocation Loc, bool EndsAfter) const;
1383
1384
  /// Find the next module that contains entities and return the ID
1385
  /// of the first entry.
1386
  ///
1387
  /// \param SLocMapI points at a chunk of a module that contains no
1388
  /// preprocessed entities or the entities it contains are not the
1389
  /// ones we are looking for.
1390
  serialization::PreprocessedEntityID
1391
    findNextPreprocessedEntity(
1392
                        GlobalSLocOffsetMapType::const_iterator SLocMapI) const;
1393
1394
  /// Returns (ModuleFile, Local index) pair for \p GlobalIndex of a
1395
  /// preprocessed entity.
1396
  std::pair<ModuleFile *, unsigned>
1397
    getModulePreprocessedEntity(unsigned GlobalIndex);
1398
1399
  /// Returns (begin, end) pair for the preprocessed entities of a
1400
  /// particular module.
1401
  llvm::iterator_range<PreprocessingRecord::iterator>
1402
  getModulePreprocessedEntities(ModuleFile &Mod) const;
1403
1404
public:
1405
  class ModuleDeclIterator
1406
      : public llvm::iterator_adaptor_base<
1407
            ModuleDeclIterator, const serialization::LocalDeclID *,
1408
            std::random_access_iterator_tag, const Decl *, ptrdiff_t,
1409
            const Decl *, const Decl *> {
1410
    ASTReader *Reader = nullptr;
1411
    ModuleFile *Mod = nullptr;
1412
1413
  public:
1414
0
    ModuleDeclIterator() : iterator_adaptor_base(nullptr) {}
1415
1416
    ModuleDeclIterator(ASTReader *Reader, ModuleFile *Mod,
1417
                       const serialization::LocalDeclID *Pos)
1418
24
        : iterator_adaptor_base(Pos), Reader(Reader), Mod(Mod) {}
1419
1420
72
    value_type operator*() const {
1421
72
      return Reader->GetDecl(Reader->getGlobalDeclID(*Mod, *I));
1422
72
    }
1423
1424
0
    value_type operator->() const { return **this; }
1425
1426
84
    bool operator==(const ModuleDeclIterator &RHS) const {
1427
84
      assert(Reader == RHS.Reader && Mod == RHS.Mod);
1428
0
      return I == RHS.I;
1429
84
    }
1430
  };
1431
1432
  llvm::iterator_range<ModuleDeclIterator>
1433
  getModuleFileLevelDecls(ModuleFile &Mod);
1434
1435
private:
1436
  void PassInterestingDeclsToConsumer();
1437
  void PassInterestingDeclToConsumer(Decl *D);
1438
1439
  void finishPendingActions();
1440
  void diagnoseOdrViolations();
1441
1442
  void pushExternalDeclIntoScope(NamedDecl *D, DeclarationName Name);
1443
1444
  void addPendingDeclContextInfo(Decl *D,
1445
                                 serialization::GlobalDeclID SemaDC,
1446
2.57M
                                 serialization::GlobalDeclID LexicalDC) {
1447
2.57M
    assert(D);
1448
0
    PendingDeclContextInfo Info = { D, SemaDC, LexicalDC };
1449
2.57M
    PendingDeclContextInfos.push_back(Info);
1450
2.57M
  }
1451
1452
  /// Produce an error diagnostic and return true.
1453
  ///
1454
  /// This routine should only be used for fatal errors that have to
1455
  /// do with non-routine failures (e.g., corrupted AST file).
1456
  void Error(StringRef Msg) const;
1457
  void Error(unsigned DiagID, StringRef Arg1 = StringRef(),
1458
             StringRef Arg2 = StringRef(), StringRef Arg3 = StringRef()) const;
1459
  void Error(llvm::Error &&Err) const;
1460
1461
public:
1462
  /// Load the AST file and validate its contents against the given
1463
  /// Preprocessor.
1464
  ///
1465
  /// \param PP the preprocessor associated with the context in which this
1466
  /// precompiled header will be loaded.
1467
  ///
1468
  /// \param Context the AST context that this precompiled header will be
1469
  /// loaded into, if any.
1470
  ///
1471
  /// \param PCHContainerRdr the PCHContainerOperations to use for loading and
1472
  /// creating modules.
1473
  ///
1474
  /// \param Extensions the list of module file extensions that can be loaded
1475
  /// from the AST files.
1476
  ///
1477
  /// \param isysroot If non-NULL, the system include path specified by the
1478
  /// user. This is only used with relocatable PCH files. If non-NULL,
1479
  /// a relocatable PCH file will use the default path "/".
1480
  ///
1481
  /// \param DisableValidationKind If set, the AST reader will suppress most
1482
  /// of its regular consistency checking, allowing the use of precompiled
1483
  /// headers and module files that cannot be determined to be compatible.
1484
  ///
1485
  /// \param AllowASTWithCompilerErrors If true, the AST reader will accept an
1486
  /// AST file the was created out of an AST with compiler errors,
1487
  /// otherwise it will reject it.
1488
  ///
1489
  /// \param AllowConfigurationMismatch If true, the AST reader will not check
1490
  /// for configuration differences between the AST file and the invocation.
1491
  ///
1492
  /// \param ValidateSystemInputs If true, the AST reader will validate
1493
  /// system input files in addition to user input files. This is only
1494
  /// meaningful if \p DisableValidation is false.
1495
  ///
1496
  /// \param UseGlobalIndex If true, the AST reader will try to load and use
1497
  /// the global module index.
1498
  ///
1499
  /// \param ReadTimer If non-null, a timer used to track the time spent
1500
  /// deserializing.
1501
  ASTReader(Preprocessor &PP, InMemoryModuleCache &ModuleCache,
1502
            ASTContext *Context, const PCHContainerReader &PCHContainerRdr,
1503
            ArrayRef<std::shared_ptr<ModuleFileExtension>> Extensions,
1504
            StringRef isysroot = "",
1505
            DisableValidationForModuleKind DisableValidationKind =
1506
                DisableValidationForModuleKind::None,
1507
            bool AllowASTWithCompilerErrors = false,
1508
            bool AllowConfigurationMismatch = false,
1509
            bool ValidateSystemInputs = false,
1510
            bool ValidateASTInputFilesContent = false,
1511
            bool UseGlobalIndex = true,
1512
            std::unique_ptr<llvm::Timer> ReadTimer = {});
1513
  ASTReader(const ASTReader &) = delete;
1514
  ASTReader &operator=(const ASTReader &) = delete;
1515
  ~ASTReader() override;
1516
1517
892k
  SourceManager &getSourceManager() const { return SourceMgr; }
1518
193k
  FileManager &getFileManager() const { return FileMgr; }
1519
2
  DiagnosticsEngine &getDiags() const { return Diags; }
1520
1521
  /// Flags that indicate what kind of AST loading failures the client
1522
  /// of the AST reader can directly handle.
1523
  ///
1524
  /// When a client states that it can handle a particular kind of failure,
1525
  /// the AST reader will not emit errors when producing that kind of failure.
1526
  enum LoadFailureCapabilities {
1527
    /// The client can't handle any AST loading failures.
1528
    ARR_None = 0,
1529
1530
    /// The client can handle an AST file that cannot load because it
1531
    /// is missing.
1532
    ARR_Missing = 0x1,
1533
1534
    /// The client can handle an AST file that cannot load because it
1535
    /// is out-of-date relative to its input files.
1536
    ARR_OutOfDate = 0x2,
1537
1538
    /// The client can handle an AST file that cannot load because it
1539
    /// was built with a different version of Clang.
1540
    ARR_VersionMismatch = 0x4,
1541
1542
    /// The client can handle an AST file that cannot load because it's
1543
    /// compiled configuration doesn't match that of the context it was
1544
    /// loaded into.
1545
    ARR_ConfigurationMismatch = 0x8,
1546
1547
    /// If a module file is marked with errors treat it as out-of-date so the
1548
    /// caller can rebuild it.
1549
    ARR_TreatModuleWithErrorsAsOutOfDate = 0x10
1550
  };
1551
1552
  /// Load the AST file designated by the given file name.
1553
  ///
1554
  /// \param FileName The name of the AST file to load.
1555
  ///
1556
  /// \param Type The kind of AST being loaded, e.g., PCH, module, main file,
1557
  /// or preamble.
1558
  ///
1559
  /// \param ImportLoc the location where the module file will be considered as
1560
  /// imported from. For non-module AST types it should be invalid.
1561
  ///
1562
  /// \param ClientLoadCapabilities The set of client load-failure
1563
  /// capabilities, represented as a bitset of the enumerators of
1564
  /// LoadFailureCapabilities.
1565
  ///
1566
  /// \param Imported optional out-parameter to append the list of modules
1567
  /// that were imported by precompiled headers or any other non-module AST file
1568
  ASTReadResult ReadAST(StringRef FileName, ModuleKind Type,
1569
                        SourceLocation ImportLoc,
1570
                        unsigned ClientLoadCapabilities,
1571
                        SmallVectorImpl<ImportedSubmodule> *Imported = nullptr);
1572
1573
  /// Make the entities in the given module and any of its (non-explicit)
1574
  /// submodules visible to name lookup.
1575
  ///
1576
  /// \param Mod The module whose names should be made visible.
1577
  ///
1578
  /// \param NameVisibility The level of visibility to give the names in the
1579
  /// module.  Visibility can only be increased over time.
1580
  ///
1581
  /// \param ImportLoc The location at which the import occurs.
1582
  void makeModuleVisible(Module *Mod,
1583
                         Module::NameVisibilityKind NameVisibility,
1584
                         SourceLocation ImportLoc);
1585
1586
  /// Make the names within this set of hidden names visible.
1587
  void makeNamesVisible(const HiddenNames &Names, Module *Owner);
1588
1589
  /// Note that MergedDef is a redefinition of the canonical definition
1590
  /// Def, so Def should be visible whenever MergedDef is.
1591
  void mergeDefinitionVisibility(NamedDecl *Def, NamedDecl *MergedDef);
1592
1593
  /// Take the AST callbacks listener.
1594
846
  std::unique_ptr<ASTReaderListener> takeListener() {
1595
846
    return std::move(Listener);
1596
846
  }
1597
1598
  /// Set the AST callbacks listener.
1599
996
  void setListener(std::unique_ptr<ASTReaderListener> Listener) {
1600
996
    this->Listener = std::move(Listener);
1601
996
  }
1602
1603
  /// Add an AST callback listener.
1604
  ///
1605
  /// Takes ownership of \p L.
1606
936
  void addListener(std::unique_ptr<ASTReaderListener> L) {
1607
936
    if (Listener)
1608
938
      L = std::make_unique<ChainedASTReaderListener>(std::move(L),
1609
938
                                                      std::move(Listener));
1610
936
    Listener = std::move(L);
1611
936
  }
1612
1613
  /// RAII object to temporarily add an AST callback listener.
1614
  class ListenerScope {
1615
    ASTReader &Reader;
1616
    bool Chained = false;
1617
1618
  public:
1619
    ListenerScope(ASTReader &Reader, std::unique_ptr<ASTReaderListener> L)
1620
423
        : Reader(Reader) {
1621
423
      auto Old = Reader.takeListener();
1622
423
      if (Old) {
1623
423
        Chained = true;
1624
423
        L = std::make_unique<ChainedASTReaderListener>(std::move(L),
1625
423
                                                        std::move(Old));
1626
423
      }
1627
423
      Reader.setListener(std::move(L));
1628
423
    }
1629
1630
423
    ~ListenerScope() {
1631
423
      auto New = Reader.takeListener();
1632
423
      if (Chained)
1633
423
        Reader.setListener(static_cast<ChainedASTReaderListener *>(New.get())
1634
423
                               ->takeSecond());
1635
423
    }
1636
  };
1637
1638
  /// Set the AST deserialization listener.
1639
  void setDeserializationListener(ASTDeserializationListener *Listener,
1640
                                  bool TakeOwnership = false);
1641
1642
  /// Get the AST deserialization listener.
1643
0
  ASTDeserializationListener *getDeserializationListener() {
1644
0
    return DeserializationListener;
1645
0
  }
1646
1647
  /// Determine whether this AST reader has a global index.
1648
6.54k
  bool hasGlobalIndex() const { return (bool)GlobalIndex; }
1649
1650
  /// Return global module index.
1651
3
  GlobalModuleIndex *getGlobalIndex() { return GlobalIndex.get(); }
1652
1653
  /// Reset reader for a reload try.
1654
2
  void resetForReload() { TriedLoadingGlobalIndex = false; }
1655
1656
  /// Attempts to load the global index.
1657
  ///
1658
  /// \returns true if loading the global index has failed for any reason.
1659
  bool loadGlobalIndex();
1660
1661
  /// Determine whether we tried to load the global index, but failed,
1662
  /// e.g., because it is out-of-date or does not exist.
1663
  bool isGlobalIndexUnavailable() const;
1664
1665
  /// Initializes the ASTContext
1666
  void InitializeContext();
1667
1668
  /// Update the state of Sema after loading some additional modules.
1669
  void UpdateSema();
1670
1671
  /// Add in-memory (virtual file) buffer.
1672
  void addInMemoryBuffer(StringRef &FileName,
1673
75
                         std::unique_ptr<llvm::MemoryBuffer> Buffer) {
1674
75
    ModuleMgr.addInMemoryBuffer(FileName, std::move(Buffer));
1675
75
  }
1676
1677
  /// Finalizes the AST reader's state before writing an AST file to
1678
  /// disk.
1679
  ///
1680
  /// This operation may undo temporary state in the AST that should not be
1681
  /// emitted.
1682
  void finalizeForWriting();
1683
1684
  /// Retrieve the module manager.
1685
27.0k
  ModuleManager &getModuleManager() { return ModuleMgr; }
1686
1687
  /// Retrieve the preprocessor.
1688
18.3M
  Preprocessor &getPreprocessor() const { return PP; }
1689
1690
  /// Retrieve the name of the original source file name for the primary
1691
  /// module file.
1692
149
  StringRef getOriginalSourceFile() {
1693
149
    return ModuleMgr.getPrimaryModule().OriginalSourceFileName;
1694
149
  }
1695
1696
  /// Retrieve the name of the original source file name directly from
1697
  /// the AST file, without actually loading the AST file.
1698
  static std::string
1699
  getOriginalSourceFile(const std::string &ASTFileName, FileManager &FileMgr,
1700
                        const PCHContainerReader &PCHContainerRdr,
1701
                        DiagnosticsEngine &Diags);
1702
1703
  /// Read the control block for the named AST file.
1704
  ///
1705
  /// \returns true if an error occurred, false otherwise.
1706
  static bool
1707
  readASTFileControlBlock(StringRef Filename, FileManager &FileMgr,
1708
                          const PCHContainerReader &PCHContainerRdr,
1709
                          bool FindModuleFileExtensions,
1710
                          ASTReaderListener &Listener,
1711
                          bool ValidateDiagnosticOptions);
1712
1713
  /// Determine whether the given AST file is acceptable to load into a
1714
  /// translation unit with the given language and target options.
1715
  static bool isAcceptableASTFile(StringRef Filename, FileManager &FileMgr,
1716
                                  const PCHContainerReader &PCHContainerRdr,
1717
                                  const LangOptions &LangOpts,
1718
                                  const TargetOptions &TargetOpts,
1719
                                  const PreprocessorOptions &PPOpts,
1720
                                  StringRef ExistingModuleCachePath);
1721
1722
  /// Returns the suggested contents of the predefines buffer,
1723
  /// which contains a (typically-empty) subset of the predefines
1724
  /// build prior to including the precompiled header.
1725
3.60k
  const std::string &getSuggestedPredefines() { return SuggestedPredefines; }
1726
1727
  /// Read a preallocated preprocessed entity from the external source.
1728
  ///
1729
  /// \returns null if an error occurred that prevented the preprocessed
1730
  /// entity from being loaded.
1731
  PreprocessedEntity *ReadPreprocessedEntity(unsigned Index) override;
1732
1733
  /// Returns a pair of [Begin, End) indices of preallocated
1734
  /// preprocessed entities that \p Range encompasses.
1735
  std::pair<unsigned, unsigned>
1736
      findPreprocessedEntitiesInRange(SourceRange Range) override;
1737
1738
  /// Optionally returns true or false if the preallocated preprocessed
1739
  /// entity with index \p Index came from file \p FID.
1740
  Optional<bool> isPreprocessedEntityInFileID(unsigned Index,
1741
                                              FileID FID) override;
1742
1743
  /// Read a preallocated skipped range from the external source.
1744
  SourceRange ReadSkippedRange(unsigned Index) override;
1745
1746
  /// Read the header file information for the given file entry.
1747
  HeaderFileInfo GetHeaderFileInfo(const FileEntry *FE) override;
1748
1749
  void ReadPragmaDiagnosticMappings(DiagnosticsEngine &Diag);
1750
1751
  /// Returns the number of source locations found in the chain.
1752
7.32M
  unsigned getTotalNumSLocs() const {
1753
7.32M
    return TotalNumSLocEntries;
1754
7.32M
  }
1755
1756
  /// Returns the number of identifiers found in the chain.
1757
37.7k
  unsigned getTotalNumIdentifiers() const {
1758
37.7k
    return static_cast<unsigned>(IdentifiersLoaded.size());
1759
37.7k
  }
1760
1761
  /// Returns the number of macros found in the chain.
1762
36.0k
  unsigned getTotalNumMacros() const {
1763
36.0k
    return static_cast<unsigned>(MacrosLoaded.size());
1764
36.0k
  }
1765
1766
  /// Returns the number of types found in the chain.
1767
38.6k
  unsigned getTotalNumTypes() const {
1768
38.6k
    return static_cast<unsigned>(TypesLoaded.size());
1769
38.6k
  }
1770
1771
  /// Returns the number of declarations found in the chain.
1772
38.4k
  unsigned getTotalNumDecls() const {
1773
38.4k
    return static_cast<unsigned>(DeclsLoaded.size());
1774
38.4k
  }
1775
1776
  /// Returns the number of submodules known.
1777
31.1k
  unsigned getTotalNumSubmodules() const {
1778
31.1k
    return static_cast<unsigned>(SubmodulesLoaded.size());
1779
31.1k
  }
1780
1781
  /// Returns the number of selectors found in the chain.
1782
5.31k
  unsigned getTotalNumSelectors() const {
1783
5.31k
    return static_cast<unsigned>(SelectorsLoaded.size());
1784
5.31k
  }
1785
1786
  /// Returns the number of preprocessed entities known to the AST
1787
  /// reader.
1788
457
  unsigned getTotalNumPreprocessedEntities() const {
1789
457
    unsigned Result = 0;
1790
457
    for (const auto &M : ModuleMgr)
1791
470
      Result += M.NumPreprocessedEntities;
1792
457
    return Result;
1793
457
  }
1794
1795
  /// Resolve a type ID into a type, potentially building a new
1796
  /// type.
1797
  QualType GetType(serialization::TypeID ID);
1798
1799
  /// Resolve a local type ID within a given AST file into a type.
1800
  QualType getLocalType(ModuleFile &F, unsigned LocalID);
1801
1802
  /// Map a local type ID within a given AST file into a global type ID.
1803
  serialization::TypeID getGlobalTypeID(ModuleFile &F, unsigned LocalID) const;
1804
1805
  /// Read a type from the current position in the given record, which
1806
  /// was read from the given AST file.
1807
27.5M
  QualType readType(ModuleFile &F, const RecordData &Record, unsigned &Idx) {
1808
27.5M
    if (Idx >= Record.size())
1809
0
      return {};
1810
1811
27.5M
    return getLocalType(F, Record[Idx++]);
1812
27.5M
  }
1813
1814
  /// Map from a local declaration ID within a given module to a
1815
  /// global declaration ID.
1816
  serialization::DeclID getGlobalDeclID(ModuleFile &F,
1817
                                      serialization::LocalDeclID LocalID) const;
1818
1819
  /// Returns true if global DeclID \p ID originated from module \p M.
1820
  bool isDeclIDFromModule(serialization::GlobalDeclID ID, ModuleFile &M) const;
1821
1822
  /// Retrieve the module file that owns the given declaration, or NULL
1823
  /// if the declaration is not from a module file.
1824
  ModuleFile *getOwningModuleFile(const Decl *D);
1825
1826
  /// Get the best name we know for the module that owns the given
1827
  /// declaration, or an empty string if the declaration is not from a module.
1828
  std::string getOwningModuleNameForDiagnostic(const Decl *D);
1829
1830
  /// Returns the source location for the decl \p ID.
1831
  SourceLocation getSourceLocationForDeclID(serialization::GlobalDeclID ID);
1832
1833
  /// Resolve a declaration ID into a declaration, potentially
1834
  /// building a new declaration.
1835
  Decl *GetDecl(serialization::DeclID ID);
1836
  Decl *GetExternalDecl(uint32_t ID) override;
1837
1838
  /// Resolve a declaration ID into a declaration. Return 0 if it's not
1839
  /// been loaded yet.
1840
  Decl *GetExistingDecl(serialization::DeclID ID);
1841
1842
  /// Reads a declaration with the given local ID in the given module.
1843
2.44M
  Decl *GetLocalDecl(ModuleFile &F, uint32_t LocalID) {
1844
2.44M
    return GetDecl(getGlobalDeclID(F, LocalID));
1845
2.44M
  }
1846
1847
  /// Reads a declaration with the given local ID in the given module.
1848
  ///
1849
  /// \returns The requested declaration, casted to the given return type.
1850
  template<typename T>
1851
7.10k
  T *GetLocalDeclAs(ModuleFile &F, uint32_t LocalID) {
1852
7.10k
    return cast_or_null<T>(GetLocalDecl(F, LocalID));
1853
7.10k
  }
1854
1855
  /// Map a global declaration ID into the declaration ID used to
1856
  /// refer to this declaration within the given module fule.
1857
  ///
1858
  /// \returns the global ID of the given declaration as known in the given
1859
  /// module file.
1860
  serialization::DeclID
1861
  mapGlobalIDToModuleFileGlobalID(ModuleFile &M,
1862
                                  serialization::DeclID GlobalID);
1863
1864
  /// Reads a declaration ID from the given position in a record in the
1865
  /// given module.
1866
  ///
1867
  /// \returns The declaration ID read from the record, adjusted to a global ID.
1868
  serialization::DeclID ReadDeclID(ModuleFile &F, const RecordData &Record,
1869
                                   unsigned &Idx);
1870
1871
  /// Reads a declaration from the given position in a record in the
1872
  /// given module.
1873
8.44M
  Decl *ReadDecl(ModuleFile &F, const RecordData &R, unsigned &I) {
1874
8.44M
    return GetDecl(ReadDeclID(F, R, I));
1875
8.44M
  }
1876
1877
  /// Reads a declaration from the given position in a record in the
1878
  /// given module.
1879
  ///
1880
  /// \returns The declaration read from this location, casted to the given
1881
  /// result type.
1882
  template<typename T>
1883
21.5M
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
21.5M
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
21.5M
  }
clang::ParmVarDecl* clang::ASTReader::ReadDeclAs<clang::ParmVarDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
2.42M
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
2.42M
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
2.42M
  }
clang::NamedDecl* clang::ASTReader::ReadDeclAs<clang::NamedDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
4.17M
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
4.17M
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
4.17M
  }
clang::FieldDecl* clang::ASTReader::ReadDeclAs<clang::FieldDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
45.9k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
45.9k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
45.9k
  }
clang::IndirectFieldDecl* clang::ASTReader::ReadDeclAs<clang::IndirectFieldDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
6
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
6
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
6
  }
clang::NamespaceDecl* clang::ASTReader::ReadDeclAs<clang::NamespaceDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
164k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
164k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
164k
  }
clang::NamespaceAliasDecl* clang::ASTReader::ReadDeclAs<clang::NamespaceAliasDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
5
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
5
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
5
  }
clang::CXXRecordDecl* clang::ASTReader::ReadDeclAs<clang::CXXRecordDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
295k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
295k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
295k
  }
clang::CXXDestructorDecl* clang::ASTReader::ReadDeclAs<clang::CXXDestructorDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
2.34k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
2.34k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
2.34k
  }
clang::ValueDecl* clang::ASTReader::ReadDeclAs<clang::ValueDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
1.65M
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
1.65M
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
1.65M
  }
clang::DeclContext* clang::ASTReader::ReadDeclAs<clang::DeclContext>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
9.92M
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
9.92M
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
9.92M
  }
clang::TypeAliasTemplateDecl* clang::ASTReader::ReadDeclAs<clang::TypeAliasTemplateDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
38.6k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
38.6k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
38.6k
  }
clang::EnumDecl* clang::ASTReader::ReadDeclAs<clang::EnumDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
4.71k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
4.71k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
4.71k
  }
clang::FunctionTemplateDecl* clang::ASTReader::ReadDeclAs<clang::FunctionTemplateDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
531k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
531k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
531k
  }
clang::FunctionDecl* clang::ASTReader::ReadDeclAs<clang::FunctionDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
105k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
105k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
105k
  }
clang::ImplicitParamDecl* clang::ASTReader::ReadDeclAs<clang::ImplicitParamDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
160k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
160k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
160k
  }
clang::ObjCMethodDecl* clang::ASTReader::ReadDeclAs<clang::ObjCMethodDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
6.99k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
6.99k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
6.99k
  }
clang::ObjCTypeParamDecl* clang::ASTReader::ReadDeclAs<clang::ObjCTypeParamDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
21.3k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
21.3k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
21.3k
  }
clang::ObjCProtocolDecl* clang::ASTReader::ReadDeclAs<clang::ObjCProtocolDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
7.38k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
7.38k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
7.38k
  }
clang::ObjCInterfaceDecl* clang::ASTReader::ReadDeclAs<clang::ObjCInterfaceDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
13.8k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
13.8k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
13.8k
  }
clang::ObjCIvarDecl* clang::ASTReader::ReadDeclAs<clang::ObjCIvarDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
3.45k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
3.45k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
3.45k
  }
clang::ObjCPropertyDecl* clang::ASTReader::ReadDeclAs<clang::ObjCPropertyDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
16
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
16
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
16
  }
Unexecuted instantiation: clang::Decl* clang::ASTReader::ReadDeclAs<clang::Decl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
clang::VarTemplateDecl* clang::ASTReader::ReadDeclAs<clang::VarTemplateDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
400
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
400
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
400
  }
clang::VarDecl* clang::ASTReader::ReadDeclAs<clang::VarDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
95.3k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
95.3k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
95.3k
  }
clang::BindingDecl* clang::ASTReader::ReadDeclAs<clang::BindingDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
12
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
12
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
12
  }
clang::UsingShadowDecl* clang::ASTReader::ReadDeclAs<clang::UsingShadowDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
13.0k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
13.0k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
13.0k
  }
clang::UsingEnumDecl* clang::ASTReader::ReadDeclAs<clang::UsingEnumDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
1
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
1
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
1
  }
clang::ConstructorUsingShadowDecl* clang::ASTReader::ReadDeclAs<clang::ConstructorUsingShadowDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
152
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
152
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
152
  }
clang::ClassTemplateDecl* clang::ASTReader::ReadDeclAs<clang::ClassTemplateDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
1.23M
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
1.23M
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
1.23M
  }
clang::CXXConstructorDecl* clang::ASTReader::ReadDeclAs<clang::CXXConstructorDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
20.8k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
20.8k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
20.8k
  }
clang::CXXMethodDecl* clang::ASTReader::ReadDeclAs<clang::CXXMethodDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
1.28k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
1.28k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
1.28k
  }
clang::RedeclarableTemplateDecl* clang::ASTReader::ReadDeclAs<clang::RedeclarableTemplateDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
374k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
374k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
374k
  }
clang::ClassTemplatePartialSpecializationDecl* clang::ASTReader::ReadDeclAs<clang::ClassTemplatePartialSpecializationDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
28.8k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
28.8k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
28.8k
  }
clang::VarTemplatePartialSpecializationDecl* clang::ASTReader::ReadDeclAs<clang::VarTemplatePartialSpecializationDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
25
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
25
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
25
  }
clang::ConceptDecl* clang::ASTReader::ReadDeclAs<clang::ConceptDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
52
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
52
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
52
  }
clang::LabelDecl* clang::ASTReader::ReadDeclAs<clang::LabelDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
169
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
169
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
169
  }
clang::CapturedDecl* clang::ASTReader::ReadDeclAs<clang::CapturedDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
30.7k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
30.7k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
30.7k
  }
clang::RecordDecl* clang::ASTReader::ReadDeclAs<clang::RecordDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
30.7k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
30.7k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
30.7k
  }
clang::RequiresExprBodyDecl* clang::ASTReader::ReadDeclAs<clang::RequiresExprBodyDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
2
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
2
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
2
  }
clang::BlockDecl* clang::ASTReader::ReadDeclAs<clang::BlockDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
26
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
26
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
26
  }
clang::NonTypeTemplateParmDecl* clang::ASTReader::ReadDeclAs<clang::NonTypeTemplateParmDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
105k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
105k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
105k
  }
clang::MSPropertyDecl* clang::ASTReader::ReadDeclAs<clang::MSPropertyDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
22
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
22
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
22
  }
clang::MSGuidDecl* clang::ASTReader::ReadDeclAs<clang::MSGuidDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1883
1
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1884
1
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1885
1
  }
1886
1887
  /// If any redeclarations of \p D have been imported since it was
1888
  /// last checked, this digs out those redeclarations and adds them to the
1889
  /// redeclaration chain for \p D.
1890
  void CompleteRedeclChain(const Decl *D) override;
1891
1892
  CXXBaseSpecifier *GetExternalCXXBaseSpecifiers(uint64_t Offset) override;
1893
1894
  /// Resolve the offset of a statement into a statement.
1895
  ///
1896
  /// This operation will read a new statement from the external
1897
  /// source each time it is called, and is meant to be used via a
1898
  /// LazyOffsetPtr (which is used by Decls for the body of functions, etc).
1899
  Stmt *GetExternalDeclStmt(uint64_t Offset) override;
1900
1901
  /// ReadBlockAbbrevs - Enter a subblock of the specified BlockID with the
1902
  /// specified cursor.  Read the abbreviations that are at the top of the block
1903
  /// and then leave the cursor pointing into the block.
1904
  static bool ReadBlockAbbrevs(llvm::BitstreamCursor &Cursor, unsigned BlockID,
1905
                               uint64_t *StartOfBlockOffset = nullptr);
1906
1907
  /// Finds all the visible declarations with a given name.
1908
  /// The current implementation of this method just loads the entire
1909
  /// lookup table as unmaterialized references.
1910
  bool FindExternalVisibleDeclsByName(const DeclContext *DC,
1911
                                      DeclarationName Name) override;
1912
1913
  /// Read all of the declarations lexically stored in a
1914
  /// declaration context.
1915
  ///
1916
  /// \param DC The declaration context whose declarations will be
1917
  /// read.
1918
  ///
1919
  /// \param IsKindWeWant A predicate indicating which declaration kinds
1920
  /// we are interested in.
1921
  ///
1922
  /// \param Decls Vector that will contain the declarations loaded
1923
  /// from the external source. The caller is responsible for merging
1924
  /// these declarations with any declarations already stored in the
1925
  /// declaration context.
1926
  void
1927
  FindExternalLexicalDecls(const DeclContext *DC,
1928
                           llvm::function_ref<bool(Decl::Kind)> IsKindWeWant,
1929
                           SmallVectorImpl<Decl *> &Decls) override;
1930
1931
  /// Get the decls that are contained in a file in the Offset/Length
1932
  /// range. \p Length can be 0 to indicate a point at \p Offset instead of
1933
  /// a range.
1934
  void FindFileRegionDecls(FileID File, unsigned Offset, unsigned Length,
1935
                           SmallVectorImpl<Decl *> &Decls) override;
1936
1937
  /// Notify ASTReader that we started deserialization of
1938
  /// a decl or type so until FinishedDeserializing is called there may be
1939
  /// decls that are initializing. Must be paired with FinishedDeserializing.
1940
  void StartedDeserializing() override;
1941
1942
  /// Notify ASTReader that we finished the deserialization of
1943
  /// a decl or type. Must be paired with StartedDeserializing.
1944
  void FinishedDeserializing() override;
1945
1946
  /// Function that will be invoked when we begin parsing a new
1947
  /// translation unit involving this external AST source.
1948
  ///
1949
  /// This function will provide all of the external definitions to
1950
  /// the ASTConsumer.
1951
  void StartTranslationUnit(ASTConsumer *Consumer) override;
1952
1953
  /// Print some statistics about AST usage.
1954
  void PrintStats() override;
1955
1956
  /// Dump information about the AST reader to standard error.
1957
  void dump();
1958
1959
  /// Return the amount of memory used by memory buffers, breaking down
1960
  /// by heap-backed versus mmap'ed memory.
1961
  void getMemoryBufferSizes(MemoryBufferSizes &sizes) const override;
1962
1963
  /// Initialize the semantic source with the Sema instance
1964
  /// being used to perform semantic analysis on the abstract syntax
1965
  /// tree.
1966
  void InitializeSema(Sema &S) override;
1967
1968
  /// Inform the semantic consumer that Sema is no longer available.
1969
11.2k
  void ForgetSema() override { SemaObj = nullptr; }
1970
1971
  /// Retrieve the IdentifierInfo for the named identifier.
1972
  ///
1973
  /// This routine builds a new IdentifierInfo for the given identifier. If any
1974
  /// declarations with this name are visible from translation unit scope, their
1975
  /// declarations will be deserialized and introduced into the declaration
1976
  /// chain of the identifier.
1977
  IdentifierInfo *get(StringRef Name) override;
1978
1979
  /// Retrieve an iterator into the set of all identifiers
1980
  /// in all loaded AST files.
1981
  IdentifierIterator *getIdentifiers() override;
1982
1983
  /// Load the contents of the global method pool for a given
1984
  /// selector.
1985
  void ReadMethodPool(Selector Sel) override;
1986
1987
  /// Load the contents of the global method pool for a given
1988
  /// selector if necessary.
1989
  void updateOutOfDateSelector(Selector Sel) override;
1990
1991
  /// Load the set of namespaces that are known to the external source,
1992
  /// which will be used during typo correction.
1993
  void ReadKnownNamespaces(
1994
                         SmallVectorImpl<NamespaceDecl *> &Namespaces) override;
1995
1996
  void ReadUndefinedButUsed(
1997
      llvm::MapVector<NamedDecl *, SourceLocation> &Undefined) override;
1998
1999
  void ReadMismatchingDeleteExpressions(llvm::MapVector<
2000
      FieldDecl *, llvm::SmallVector<std::pair<SourceLocation, bool>, 4>> &
2001
                                            Exprs) override;
2002
2003
  void ReadTentativeDefinitions(
2004
                            SmallVectorImpl<VarDecl *> &TentativeDefs) override;
2005
2006
  void ReadUnusedFileScopedDecls(
2007
                       SmallVectorImpl<const DeclaratorDecl *> &Decls) override;
2008
2009
  void ReadDelegatingConstructors(
2010
                         SmallVectorImpl<CXXConstructorDecl *> &Decls) override;
2011
2012
  void ReadExtVectorDecls(SmallVectorImpl<TypedefNameDecl *> &Decls) override;
2013
2014
  void ReadUnusedLocalTypedefNameCandidates(
2015
      llvm::SmallSetVector<const TypedefNameDecl *, 4> &Decls) override;
2016
2017
  void ReadDeclsToCheckForDeferredDiags(
2018
      llvm::SmallSetVector<Decl *, 4> &Decls) override;
2019
2020
  void ReadReferencedSelectors(
2021
           SmallVectorImpl<std::pair<Selector, SourceLocation>> &Sels) override;
2022
2023
  void ReadWeakUndeclaredIdentifiers(
2024
           SmallVectorImpl<std::pair<IdentifierInfo *, WeakInfo>> &WI) override;
2025
2026
  void ReadUsedVTables(SmallVectorImpl<ExternalVTableUse> &VTables) override;
2027
2028
  void ReadPendingInstantiations(
2029
                  SmallVectorImpl<std::pair<ValueDecl *,
2030
                                            SourceLocation>> &Pending) override;
2031
2032
  void ReadLateParsedTemplates(
2033
      llvm::MapVector<const FunctionDecl *, std::unique_ptr<LateParsedTemplate>>
2034
          &LPTMap) override;
2035
2036
  /// Load a selector from disk, registering its ID if it exists.
2037
  void LoadSelector(Selector Sel);
2038
2039
  void SetIdentifierInfo(unsigned ID, IdentifierInfo *II);
2040
  void SetGloballyVisibleDecls(IdentifierInfo *II,
2041
                               const SmallVectorImpl<uint32_t> &DeclIDs,
2042
                               SmallVectorImpl<Decl *> *Decls = nullptr);
2043
2044
  /// Report a diagnostic.
2045
  DiagnosticBuilder Diag(unsigned DiagID) const;
2046
2047
  /// Report a diagnostic.
2048
  DiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID) const;
2049
2050
  IdentifierInfo *DecodeIdentifierInfo(serialization::IdentifierID ID);
2051
2052
  IdentifierInfo *readIdentifier(ModuleFile &M, const RecordData &Record,
2053
11.0M
                                 unsigned &Idx) {
2054
11.0M
    return DecodeIdentifierInfo(getGlobalIdentifierID(M, Record[Idx++]));
2055
11.0M
  }
2056
2057
185
  IdentifierInfo *GetIdentifier(serialization::IdentifierID ID) override {
2058
    // Note that we are loading an identifier.
2059
185
    Deserializing AnIdentifier(this);
2060
2061
185
    return DecodeIdentifierInfo(ID);
2062
185
  }
2063
2064
  IdentifierInfo *getLocalIdentifier(ModuleFile &M, unsigned LocalID);
2065
2066
  serialization::IdentifierID getGlobalIdentifierID(ModuleFile &M,
2067
                                                    unsigned LocalID);
2068
2069
  void resolvePendingMacro(IdentifierInfo *II, const PendingMacroInfo &PMInfo);
2070
2071
  /// Retrieve the macro with the given ID.
2072
  MacroInfo *getMacro(serialization::MacroID ID);
2073
2074
  /// Retrieve the global macro ID corresponding to the given local
2075
  /// ID within the given module file.
2076
  serialization::MacroID getGlobalMacroID(ModuleFile &M, unsigned LocalID);
2077
2078
  /// Read the source location entry with index ID.
2079
  bool ReadSLocEntry(int ID) override;
2080
2081
  /// Retrieve the module import location and module name for the
2082
  /// given source manager entry ID.
2083
  std::pair<SourceLocation, StringRef> getModuleImportLoc(int ID) override;
2084
2085
  /// Retrieve the global submodule ID given a module and its local ID
2086
  /// number.
2087
  serialization::SubmoduleID
2088
  getGlobalSubmoduleID(ModuleFile &M, unsigned LocalID);
2089
2090
  /// Retrieve the submodule that corresponds to a global submodule ID.
2091
  ///
2092
  Module *getSubmodule(serialization::SubmoduleID GlobalID);
2093
2094
  /// Retrieve the module that corresponds to the given module ID.
2095
  ///
2096
  /// Note: overrides method in ExternalASTSource
2097
  Module *getModule(unsigned ID) override;
2098
2099
  /// Retrieve the module file with a given local ID within the specified
2100
  /// ModuleFile.
2101
  ModuleFile *getLocalModuleFile(ModuleFile &M, unsigned ID);
2102
2103
  /// Get an ID for the given module file.
2104
  unsigned getModuleFileID(ModuleFile *M);
2105
2106
  /// Return a descriptor for the corresponding module.
2107
  llvm::Optional<ASTSourceDescriptor> getSourceDescriptor(unsigned ID) override;
2108
2109
  ExtKind hasExternalDefinitions(const Decl *D) override;
2110
2111
  /// Retrieve a selector from the given module with its local ID
2112
  /// number.
2113
  Selector getLocalSelector(ModuleFile &M, unsigned LocalID);
2114
2115
  Selector DecodeSelector(serialization::SelectorID Idx);
2116
2117
  Selector GetExternalSelector(serialization::SelectorID ID) override;
2118
  uint32_t GetNumExternalSelectors() override;
2119
2120
32.8k
  Selector ReadSelector(ModuleFile &M, const RecordData &Record, unsigned &Idx) {
2121
32.8k
    return getLocalSelector(M, Record[Idx++]);
2122
32.8k
  }
2123
2124
  /// Retrieve the global selector ID that corresponds to this
2125
  /// the local selector ID in a given module.
2126
  serialization::SelectorID getGlobalSelectorID(ModuleFile &F,
2127
                                                unsigned LocalID) const;
2128
2129
  /// Read the contents of a CXXCtorInitializer array.
2130
  CXXCtorInitializer **GetExternalCXXCtorInitializers(uint64_t Offset) override;
2131
2132
  /// Read a AlignPackInfo from raw form.
2133
3.87k
  Sema::AlignPackInfo ReadAlignPackInfo(uint32_t Raw) const {
2134
3.87k
    return Sema::AlignPackInfo::getFromRawEncoding(Raw);
2135
3.87k
  }
2136
2137
  /// Read a source location from raw form and return it in its
2138
  /// originating module file's source location space.
2139
84.4M
  SourceLocation ReadUntranslatedSourceLocation(uint32_t Raw) const {
2140
84.4M
    return SourceLocation::getFromRawEncoding((Raw >> 1) | (Raw << 31));
2141
84.4M
  }
2142
2143
  /// Read a source location from raw form.
2144
84.4M
  SourceLocation ReadSourceLocation(ModuleFile &ModuleFile, uint32_t Raw) const {
2145
84.4M
    SourceLocation Loc = ReadUntranslatedSourceLocation(Raw);
2146
84.4M
    return TranslateSourceLocation(ModuleFile, Loc);
2147
84.4M
  }
2148
2149
  /// Translate a source location from another module file's source
2150
  /// location space into ours.
2151
  SourceLocation TranslateSourceLocation(ModuleFile &ModuleFile,
2152
92.1M
                                         SourceLocation Loc) const {
2153
92.1M
    if (!ModuleFile.ModuleOffsetMap.empty())
2154
0
      ReadModuleOffsetMap(ModuleFile);
2155
92.1M
    assert(ModuleFile.SLocRemap.find(Loc.getOffset()) !=
2156
92.1M
               ModuleFile.SLocRemap.end() &&
2157
92.1M
           "Cannot find offset to remap.");
2158
0
    int Remap = ModuleFile.SLocRemap.find(Loc.getOffset())->second;
2159
92.1M
    return Loc.getLocWithOffset(Remap);
2160
92.1M
  }
2161
2162
  /// Read a source location.
2163
  SourceLocation ReadSourceLocation(ModuleFile &ModuleFile,
2164
                                    const RecordDataImpl &Record,
2165
63.0M
                                    unsigned &Idx) {
2166
63.0M
    return ReadSourceLocation(ModuleFile, Record[Idx++]);
2167
63.0M
  }
2168
2169
  /// Read a source range.
2170
  SourceRange ReadSourceRange(ModuleFile &F,
2171
                              const RecordData &Record, unsigned &Idx);
2172
2173
  // Read a string
2174
  static std::string ReadString(const RecordData &Record, unsigned &Idx);
2175
2176
  // Skip a string
2177
18
  static void SkipString(const RecordData &Record, unsigned &Idx) {
2178
18
    Idx += Record[Idx] + 1;
2179
18
  }
2180
2181
  // Read a path
2182
  std::string ReadPath(ModuleFile &F, const RecordData &Record, unsigned &Idx);
2183
2184
  // Read a path
2185
  std::string ReadPath(StringRef BaseDirectory, const RecordData &Record,
2186
                       unsigned &Idx);
2187
2188
  // Skip a path
2189
18
  static void SkipPath(const RecordData &Record, unsigned &Idx) {
2190
18
    SkipString(Record, Idx);
2191
18
  }
2192
2193
  /// Read a version tuple.
2194
  static VersionTuple ReadVersionTuple(const RecordData &Record, unsigned &Idx);
2195
2196
  CXXTemporary *ReadCXXTemporary(ModuleFile &F, const RecordData &Record,
2197
                                 unsigned &Idx);
2198
2199
  /// Reads a statement.
2200
  Stmt *ReadStmt(ModuleFile &F);
2201
2202
  /// Reads an expression.
2203
  Expr *ReadExpr(ModuleFile &F);
2204
2205
  /// Reads a sub-statement operand during statement reading.
2206
6.02M
  Stmt *ReadSubStmt() {
2207
6.02M
    assert(ReadingKind == Read_Stmt &&
2208
6.02M
           "Should be called only during statement reading!");
2209
    // Subexpressions are stored from last to first, so the next Stmt we need
2210
    // is at the back of the stack.
2211
0
    assert(!StmtStack.empty() && "Read too many sub-statements!");
2212
0
    return StmtStack.pop_back_val();
2213
6.02M
  }
2214
2215
  /// Reads a sub-expression operand during statement reading.
2216
  Expr *ReadSubExpr();
2217
2218
  /// Reads a token out of a record.
2219
  Token ReadToken(ModuleFile &M, const RecordDataImpl &Record, unsigned &Idx);
2220
2221
  /// Reads the macro record located at the given offset.
2222
  MacroInfo *ReadMacroRecord(ModuleFile &F, uint64_t Offset);
2223
2224
  /// Determine the global preprocessed entity ID that corresponds to
2225
  /// the given local ID within the given module.
2226
  serialization::PreprocessedEntityID
2227
  getGlobalPreprocessedEntityID(ModuleFile &M, unsigned LocalID) const;
2228
2229
  /// Add a macro to deserialize its macro directive history.
2230
  ///
2231
  /// \param II The name of the macro.
2232
  /// \param M The module file.
2233
  /// \param MacroDirectivesOffset Offset of the serialized macro directive
2234
  /// history.
2235
  void addPendingMacro(IdentifierInfo *II, ModuleFile *M,
2236
                       uint32_t MacroDirectivesOffset);
2237
2238
  /// Read the set of macros defined by this external macro source.
2239
  void ReadDefinedMacros() override;
2240
2241
  /// Update an out-of-date identifier.
2242
  void updateOutOfDateIdentifier(IdentifierInfo &II) override;
2243
2244
  /// Note that this identifier is up-to-date.
2245
  void markIdentifierUpToDate(IdentifierInfo *II);
2246
2247
  /// Load all external visible decls in the given DeclContext.
2248
  void completeVisibleDeclsMap(const DeclContext *DC) override;
2249
2250
  /// Retrieve the AST context that this AST reader supplements.
2251
95.6M
  ASTContext &getContext() {
2252
95.6M
    assert(ContextObj && "requested AST context when not loading AST");
2253
0
    return *ContextObj;
2254
95.6M
  }
2255
2256
  // Contains the IDs for declarations that were requested before we have
2257
  // access to a Sema object.
2258
  SmallVector<uint64_t, 16> PreloadedDeclIDs;
2259
2260
  /// Retrieve the semantic analysis object used to analyze the
2261
  /// translation unit in which the precompiled header is being
2262
  /// imported.
2263
2.84k
  Sema *getSema() { return SemaObj; }
2264
2265
  /// Get the identifier resolver used for name lookup / updates
2266
  /// in the translation unit scope. We have one of these even if we don't
2267
  /// have a Sema object.
2268
  IdentifierResolver &getIdResolver();
2269
2270
  /// Retrieve the identifier table associated with the
2271
  /// preprocessor.
2272
  IdentifierTable &getIdentifierTable();
2273
2274
  /// Record that the given ID maps to the given switch-case
2275
  /// statement.
2276
  void RecordSwitchCaseID(SwitchCase *SC, unsigned ID);
2277
2278
  /// Retrieve the switch-case statement with the given ID.
2279
  SwitchCase *getSwitchCaseWithID(unsigned ID);
2280
2281
  void ClearSwitchCaseIDs();
2282
2283
  /// Cursors for comments blocks.
2284
  SmallVector<std::pair<llvm::BitstreamCursor,
2285
                        serialization::ModuleFile *>, 8> CommentsCursors;
2286
2287
  /// Loads comments ranges.
2288
  void ReadComments() override;
2289
2290
  /// Visit all the input files of the given module file.
2291
  void visitInputFiles(serialization::ModuleFile &MF,
2292
                       bool IncludeSystem, bool Complain,
2293
          llvm::function_ref<void(const serialization::InputFile &IF,
2294
                                  bool isSystem)> Visitor);
2295
2296
  /// Visit all the top-level module maps loaded when building the given module
2297
  /// file.
2298
  void visitTopLevelModuleMaps(serialization::ModuleFile &MF,
2299
                               llvm::function_ref<
2300
                                   void(const FileEntry *)> Visitor);
2301
2302
1.17M
  bool isProcessingUpdateRecords() { return ProcessingUpdateRecords; }
2303
};
2304
2305
} // namespace clang
2306
2307
#endif // LLVM_CLANG_SERIALIZATION_ASTREADER_H