Coverage Report

Created: 2019-07-24 05:18

/Users/buildslave/jenkins/workspace/clang-stage2-coverage-R/llvm/tools/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/DeclCXX.h"
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#include "clang/AST/DeclObjC.h"
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#include "clang/AST/DeclarationName.h"
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#include "clang/AST/NestedNameSpecifier.h"
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#include "clang/AST/OpenMPClause.h"
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#include "clang/AST/TemplateBase.h"
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#include "clang/AST/TemplateName.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/Module.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/Token.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/Serialization/ASTBitCodes.h"
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#include "clang/Serialization/ContinuousRangeMap.h"
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#include "clang/Serialization/Module.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/APFloat.h"
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#include "llvm/ADT/APInt.h"
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#include "llvm/ADT/APSInt.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/Casting.h"
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#include "llvm/Support/Endian.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;
79
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 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;
95
struct HeaderFileInfo;
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class HeaderSearchOptions;
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class LangOptions;
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class LazyASTUnresolvedSet;
99
class MacroInfo;
100
class InMemoryModuleCache;
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class NamedDecl;
102
class NamespaceDecl;
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class ObjCCategoryDecl;
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class ObjCInterfaceDecl;
105
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 TemplateParameterList;
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class TypedefNameDecl;
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class TypeSourceInfo;
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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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  virtual bool ReadFullVersionInformation(StringRef FullVersion) {
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17
    return FullVersion != getClangFullRepositoryVersion();
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  }
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3.63k
  virtual void ReadModuleName(StringRef ModuleName) {}
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4.61k
  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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846
                                   bool AllowCompatibleDifferences) {
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    return false;
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846
  }
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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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                                 bool AllowCompatibleDifferences) {
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    return false;
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  }
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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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579
                        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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4.21k
                                     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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442
                                       bool Complain) {
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    return false;
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  }
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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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                                       std::string &SuggestedPredefines) {
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    return false;
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  }
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  /// Receives __COUNTER__ value.
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  virtual void ReadCounter(const serialization::ModuleFile &M,
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0
                           unsigned Value) {}
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  /// This is called for each AST file loaded.
207
  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
211
  /// input files of the AST file via \c visitInputFile, false otherwise.
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  virtual bool needsInputFileVisitation() { return false; }
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  /// Returns true if this \c ASTReaderListener wants to receive the
215
  /// system input files of the AST file via \c visitInputFile, false otherwise.
216
31
  virtual bool needsSystemInputFileVisitation() { return false; }
217
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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
220
  /// \c needsSystemInputFileVisitation is true, then it is called for all
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  /// system input files as well.
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  ///
223
  /// \returns true to continue receiving the next input file, false to stop.
224
  virtual bool visitInputFile(StringRef Filename, bool isSystem,
225
0
                              bool isOverridden, bool isExplicitModule) {
226
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    return true;
227
0
  }
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  /// Returns true if this \c ASTReaderListener wants to receive the
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  /// imports of the AST file via \c visitImport, false otherwise.
231
12
  virtual bool needsImportVisitation() const { return false; }
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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.
235
0
  virtual void visitImport(StringRef ModuleName, StringRef Filename) {}
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  /// Indicates that a particular module file extension has been read.
238
  virtual void readModuleFileExtension(
239
0
                 const ModuleFileExtensionMetadata &Metadata) {}
240
};
241
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/// Simple wrapper class for chaining listeners.
243
class ChainedASTReaderListener : public ASTReaderListener {
244
  std::unique_ptr<ASTReaderListener> First;
245
  std::unique_ptr<ASTReaderListener> Second;
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public:
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  /// Takes ownership of \p First and \p Second.
249
  ChainedASTReaderListener(std::unique_ptr<ASTReaderListener> First,
250
                           std::unique_ptr<ASTReaderListener> Second)
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      : First(std::move(First)), Second(std::move(Second)) {}
252
253
0
  std::unique_ptr<ASTReaderListener> takeFirst() { return std::move(First); }
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406
  std::unique_ptr<ASTReaderListener> takeSecond() { return std::move(Second); }
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256
  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,
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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,
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                             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(
283
         const ModuleFileExtensionMetadata &Metadata) override;
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};
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/// ASTReaderListener implementation to validate the information of
287
/// the PCH file against an initialized Preprocessor.
288
class PCHValidator : public ASTReaderListener {
289
  Preprocessor &PP;
290
  ASTReader &Reader;
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public:
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  PCHValidator(Preprocessor &PP, ASTReader &Reader)
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4.94k
      : 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,
301
                             bool Complain) override;
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  bool ReadPreprocessorOptions(const PreprocessorOptions &PPOpts, bool Complain,
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                               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);
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};
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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;
325
};
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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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} // 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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///
351
/// 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.
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class ASTReader
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  : 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:
363
  /// Types of AST files.
364
  friend class ASTDeclReader;
365
  friend class ASTIdentifierIterator;
366
  friend class ASTRecordReader;
367
  friend class ASTStmtReader;
368
  friend class ASTUnit; // ASTUnit needs to remap source locations.
369
  friend class ASTWriter;
370
  friend class PCHValidator;
371
  friend class serialization::reader::ASTIdentifierLookupTrait;
372
  friend class serialization::ReadMethodPoolVisitor;
373
  friend class TypeLocReader;
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  using RecordData = SmallVector<uint64_t, 64>;
376
  using RecordDataImpl = SmallVectorImpl<uint64_t>;
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378
  /// The result of reading the control block of an AST file, which
379
  /// can fail for various reasons.
380
  enum ASTReadResult {
381
    /// The control block was read successfully. Aside from failures,
382
    /// the AST file is safe to read into the current context.
383
    Success,
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    /// The AST file itself appears corrupted.
386
    Failure,
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    /// The AST file was missing.
389
    Missing,
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    /// The AST file is out-of-date relative to its input files,
392
    /// and needs to be regenerated.
393
    OutOfDate,
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    /// The AST file was written by a different version of Clang.
396
    VersionMismatch,
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398
    /// The AST file was writtten with a different language/target
399
    /// configuration.
400
    ConfigurationMismatch,
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402
    /// The AST file has errors.
403
    HadErrors
404
  };
405
406
  using ModuleFile = serialization::ModuleFile;
407
  using ModuleKind = serialization::ModuleKind;
408
  using ModuleManager = serialization::ModuleManager;
409
  using ModuleIterator = ModuleManager::ModuleIterator;
410
  using ModuleConstIterator = ModuleManager::ModuleConstIterator;
411
  using ModuleReverseIterator = ModuleManager::ModuleReverseIterator;
412
413
private:
414
  /// The receiver of some callbacks invoked by ASTReader.
415
  std::unique_ptr<ASTReaderListener> Listener;
416
417
  /// The receiver of deserialization events.
418
  ASTDeserializationListener *DeserializationListener = nullptr;
419
420
  bool OwnsDeserializationListener = false;
421
422
  SourceManager &SourceMgr;
423
  FileManager &FileMgr;
424
  const PCHContainerReader &PCHContainerRdr;
425
  DiagnosticsEngine &Diags;
426
427
  /// The semantic analysis object that will be processing the
428
  /// AST files and the translation unit that uses it.
429
  Sema *SemaObj = nullptr;
430
431
  /// The preprocessor that will be loading the source file.
432
  Preprocessor &PP;
433
434
  /// The AST context into which we'll read the AST files.
435
  ASTContext *ContextObj = nullptr;
436
437
  /// The AST consumer.
438
  ASTConsumer *Consumer = nullptr;
439
440
  /// The module manager which manages modules and their dependencies
441
  ModuleManager ModuleMgr;
442
443
  /// A dummy identifier resolver used to merge TU-scope declarations in
444
  /// C, for the cases where we don't have a Sema object to provide a real
445
  /// identifier resolver.
446
  IdentifierResolver DummyIdResolver;
447
448
  /// A mapping from extension block names to module file extensions.
449
  llvm::StringMap<std::shared_ptr<ModuleFileExtension>> ModuleFileExtensions;
450
451
  /// A timer used to track the time spent deserializing.
452
  std::unique_ptr<llvm::Timer> ReadTimer;
453
454
  /// The location where the module file will be considered as
455
  /// imported from. For non-module AST types it should be invalid.
456
  SourceLocation CurrentImportLoc;
457
458
  /// The global module index, if loaded.
459
  std::unique_ptr<GlobalModuleIndex> GlobalIndex;
460
461
  /// A map of global bit offsets to the module that stores entities
462
  /// at those bit offsets.
463
  ContinuousRangeMap<uint64_t, ModuleFile*, 4> GlobalBitOffsetsMap;
464
465
  /// A map of negated SLocEntryIDs to the modules containing them.
466
  ContinuousRangeMap<unsigned, ModuleFile*, 64> GlobalSLocEntryMap;
467
468
  using GlobalSLocOffsetMapType =
469
      ContinuousRangeMap<unsigned, ModuleFile *, 64>;
470
471
  /// A map of reversed (SourceManager::MaxLoadedOffset - SLocOffset)
472
  /// SourceLocation offsets to the modules containing them.
473
  GlobalSLocOffsetMapType GlobalSLocOffsetMap;
474
475
  /// Types that have already been loaded from the chain.
476
  ///
477
  /// When the pointer at index I is non-NULL, the type with
478
  /// ID = (I + 1) << FastQual::Width has already been loaded
479
  std::vector<QualType> TypesLoaded;
480
481
  using GlobalTypeMapType =
482
      ContinuousRangeMap<serialization::TypeID, ModuleFile *, 4>;
483
484
  /// Mapping from global type IDs to the module in which the
485
  /// type resides along with the offset that should be added to the
486
  /// global type ID to produce a local ID.
487
  GlobalTypeMapType GlobalTypeMap;
488
489
  /// Declarations that have already been loaded from the chain.
490
  ///
491
  /// When the pointer at index I is non-NULL, the declaration with ID
492
  /// = I + 1 has already been loaded.
493
  std::vector<Decl *> DeclsLoaded;
494
495
  using GlobalDeclMapType =
496
      ContinuousRangeMap<serialization::DeclID, ModuleFile *, 4>;
497
498
  /// Mapping from global declaration IDs to the module in which the
499
  /// declaration resides.
500
  GlobalDeclMapType GlobalDeclMap;
501
502
  using FileOffset = std::pair<ModuleFile *, uint64_t>;
503
  using FileOffsetsTy = SmallVector<FileOffset, 2>;
504
  using DeclUpdateOffsetsMap =
505
      llvm::DenseMap<serialization::DeclID, FileOffsetsTy>;
506
507
  /// Declarations that have modifications residing in a later file
508
  /// in the chain.
509
  DeclUpdateOffsetsMap DeclUpdateOffsets;
510
511
  struct PendingUpdateRecord {
512
    Decl *D;
513
    serialization::GlobalDeclID ID;
514
515
    // Whether the declaration was just deserialized.
516
    bool JustLoaded;
517
518
    PendingUpdateRecord(serialization::GlobalDeclID ID, Decl *D,
519
                        bool JustLoaded)
520
255k
        : D(D), ID(ID), JustLoaded(JustLoaded) {}
521
  };
522
523
  /// Declaration updates for already-loaded declarations that we need
524
  /// to apply once we finish processing an import.
525
  llvm::SmallVector<PendingUpdateRecord, 16> PendingUpdateRecords;
526
527
  enum class PendingFakeDefinitionKind { NotFake, Fake, FakeLoaded };
528
529
  /// The DefinitionData pointers that we faked up for class definitions
530
  /// that we needed but hadn't loaded yet.
531
  llvm::DenseMap<void *, PendingFakeDefinitionKind> PendingFakeDefinitionData;
532
533
  /// Exception specification updates that have been loaded but not yet
534
  /// propagated across the relevant redeclaration chain. The map key is the
535
  /// canonical declaration (used only for deduplication) and the value is a
536
  /// declaration that has an exception specification.
537
  llvm::SmallMapVector<Decl *, FunctionDecl *, 4> PendingExceptionSpecUpdates;
538
539
  /// Deduced return type updates that have been loaded but not yet propagated
540
  /// across the relevant redeclaration chain. The map key is the canonical
541
  /// declaration and the value is the deduced return type.
542
  llvm::SmallMapVector<FunctionDecl *, QualType, 4> PendingDeducedTypeUpdates;
543
544
  /// Declarations that have been imported and have typedef names for
545
  /// linkage purposes.
546
  llvm::DenseMap<std::pair<DeclContext *, IdentifierInfo *>, NamedDecl *>
547
      ImportedTypedefNamesForLinkage;
548
549
  /// Mergeable declaration contexts that have anonymous declarations
550
  /// within them, and those anonymous declarations.
551
  llvm::DenseMap<Decl*, llvm::SmallVector<NamedDecl*, 2>>
552
    AnonymousDeclarationsForMerging;
553
554
  struct FileDeclsInfo {
555
    ModuleFile *Mod = nullptr;
556
    ArrayRef<serialization::LocalDeclID> Decls;
557
558
3.43k
    FileDeclsInfo() = default;
559
    FileDeclsInfo(ModuleFile *Mod, ArrayRef<serialization::LocalDeclID> Decls)
560
3.43k
        : Mod(Mod), Decls(Decls) {}
561
  };
562
563
  /// Map from a FileID to the file-level declarations that it contains.
564
  llvm::DenseMap<FileID, FileDeclsInfo> FileDeclIDs;
565
566
  /// An array of lexical contents of a declaration context, as a sequence of
567
  /// Decl::Kind, DeclID pairs.
568
  using LexicalContents = ArrayRef<llvm::support::unaligned_uint32_t>;
569
570
  /// Map from a DeclContext to its lexical contents.
571
  llvm::DenseMap<const DeclContext*, std::pair<ModuleFile*, LexicalContents>>
572
      LexicalDecls;
573
574
  /// Map from the TU to its lexical contents from each module file.
575
  std::vector<std::pair<ModuleFile*, LexicalContents>> TULexicalDecls;
576
577
  /// Map from a DeclContext to its lookup tables.
578
  llvm::DenseMap<const DeclContext *,
579
                 serialization::reader::DeclContextLookupTable> Lookups;
580
581
  // Updates for visible decls can occur for other contexts than just the
582
  // TU, and when we read those update records, the actual context may not
583
  // be available yet, so have this pending map using the ID as a key. It
584
  // will be realized when the context is actually loaded.
585
  struct PendingVisibleUpdate {
586
    ModuleFile *Mod;
587
    const unsigned char *Data;
588
  };
589
  using DeclContextVisibleUpdates = SmallVector<PendingVisibleUpdate, 1>;
590
591
  /// Updates to the visible declarations of declaration contexts that
592
  /// haven't been loaded yet.
593
  llvm::DenseMap<serialization::DeclID, DeclContextVisibleUpdates>
594
      PendingVisibleUpdates;
595
596
  /// The set of C++ or Objective-C classes that have forward
597
  /// declarations that have not yet been linked to their definitions.
598
  llvm::SmallPtrSet<Decl *, 4> PendingDefinitions;
599
600
  using PendingBodiesMap =
601
      llvm::MapVector<Decl *, uint64_t,
602
                      llvm::SmallDenseMap<Decl *, unsigned, 4>,
603
                      SmallVector<std::pair<Decl *, uint64_t>, 4>>;
604
605
  /// Functions or methods that have bodies that will be attached.
606
  PendingBodiesMap PendingBodies;
607
608
  /// Definitions for which we have added merged definitions but not yet
609
  /// performed deduplication.
610
  llvm::SetVector<NamedDecl *> PendingMergedDefinitionsToDeduplicate;
611
612
  /// Read the record that describes the lexical contents of a DC.
613
  bool ReadLexicalDeclContextStorage(ModuleFile &M,
614
                                     llvm::BitstreamCursor &Cursor,
615
                                     uint64_t Offset, DeclContext *DC);
616
617
  /// Read the record that describes the visible contents of a DC.
618
  bool ReadVisibleDeclContextStorage(ModuleFile &M,
619
                                     llvm::BitstreamCursor &Cursor,
620
                                     uint64_t Offset, serialization::DeclID ID);
621
622
  /// A vector containing identifiers that have already been
623
  /// loaded.
624
  ///
625
  /// If the pointer at index I is non-NULL, then it refers to the
626
  /// IdentifierInfo for the identifier with ID=I+1 that has already
627
  /// been loaded.
628
  std::vector<IdentifierInfo *> IdentifiersLoaded;
629
630
  using GlobalIdentifierMapType =
631
      ContinuousRangeMap<serialization::IdentID, ModuleFile *, 4>;
632
633
  /// Mapping from global identifier IDs to the module in which the
634
  /// identifier resides along with the offset that should be added to the
635
  /// global identifier ID to produce a local ID.
636
  GlobalIdentifierMapType GlobalIdentifierMap;
637
638
  /// A vector containing macros that have already been
639
  /// loaded.
640
  ///
641
  /// If the pointer at index I is non-NULL, then it refers to the
642
  /// MacroInfo for the identifier with ID=I+1 that has already
643
  /// been loaded.
644
  std::vector<MacroInfo *> MacrosLoaded;
645
646
  using LoadedMacroInfo =
647
      std::pair<IdentifierInfo *, serialization::SubmoduleID>;
648
649
  /// A set of #undef directives that we have loaded; used to
650
  /// deduplicate the same #undef information coming from multiple module
651
  /// files.
652
  llvm::DenseSet<LoadedMacroInfo> LoadedUndefs;
653
654
  using GlobalMacroMapType =
655
      ContinuousRangeMap<serialization::MacroID, ModuleFile *, 4>;
656
657
  /// Mapping from global macro IDs to the module in which the
658
  /// macro resides along with the offset that should be added to the
659
  /// global macro ID to produce a local ID.
660
  GlobalMacroMapType GlobalMacroMap;
661
662
  /// A vector containing submodules that have already been loaded.
663
  ///
664
  /// This vector is indexed by the Submodule ID (-1). NULL submodule entries
665
  /// indicate that the particular submodule ID has not yet been loaded.
666
  SmallVector<Module *, 2> SubmodulesLoaded;
667
668
  using GlobalSubmoduleMapType =
669
      ContinuousRangeMap<serialization::SubmoduleID, ModuleFile *, 4>;
670
671
  /// Mapping from global submodule IDs to the module file in which the
672
  /// submodule resides along with the offset that should be added to the
673
  /// global submodule ID to produce a local ID.
674
  GlobalSubmoduleMapType GlobalSubmoduleMap;
675
676
  /// A set of hidden declarations.
677
  using HiddenNames = SmallVector<Decl *, 2>;
678
  using HiddenNamesMapType = llvm::DenseMap<Module *, HiddenNames>;
679
680
  /// A mapping from each of the hidden submodules to the deserialized
681
  /// declarations in that submodule that could be made visible.
682
  HiddenNamesMapType HiddenNamesMap;
683
684
  /// A module import, export, or conflict that hasn't yet been resolved.
685
  struct UnresolvedModuleRef {
686
    /// The file in which this module resides.
687
    ModuleFile *File;
688
689
    /// The module that is importing or exporting.
690
    Module *Mod;
691
692
    /// The kind of module reference.
693
    enum { Import, Export, Conflict } Kind;
694
695
    /// The local ID of the module that is being exported.
696
    unsigned ID;
697
698
    /// Whether this is a wildcard export.
699
    unsigned IsWildcard : 1;
700
701
    /// String data.
702
    StringRef String;
703
  };
704
705
  /// The set of module imports and exports that still need to be
706
  /// resolved.
707
  SmallVector<UnresolvedModuleRef, 2> UnresolvedModuleRefs;
708
709
  /// A vector containing selectors that have already been loaded.
710
  ///
711
  /// This vector is indexed by the Selector ID (-1). NULL selector
712
  /// entries indicate that the particular selector ID has not yet
713
  /// been loaded.
714
  SmallVector<Selector, 16> SelectorsLoaded;
715
716
  using GlobalSelectorMapType =
717
      ContinuousRangeMap<serialization::SelectorID, ModuleFile *, 4>;
718
719
  /// Mapping from global selector IDs to the module in which the
720
  /// global selector ID to produce a local ID.
721
  GlobalSelectorMapType GlobalSelectorMap;
722
723
  /// The generation number of the last time we loaded data from the
724
  /// global method pool for this selector.
725
  llvm::DenseMap<Selector, unsigned> SelectorGeneration;
726
727
  /// Whether a selector is out of date. We mark a selector as out of date
728
  /// if we load another module after the method pool entry was pulled in.
729
  llvm::DenseMap<Selector, bool> SelectorOutOfDate;
730
731
  struct PendingMacroInfo {
732
    ModuleFile *M;
733
    uint64_t MacroDirectivesOffset;
734
735
    PendingMacroInfo(ModuleFile *M, uint64_t MacroDirectivesOffset)
736
38.1k
        : M(M), MacroDirectivesOffset(MacroDirectivesOffset) {}
737
  };
738
739
  using PendingMacroIDsMap =
740
      llvm::MapVector<IdentifierInfo *, SmallVector<PendingMacroInfo, 2>>;
741
742
  /// Mapping from identifiers that have a macro history to the global
743
  /// IDs have not yet been deserialized to the global IDs of those macros.
744
  PendingMacroIDsMap PendingMacroIDs;
745
746
  using GlobalPreprocessedEntityMapType =
747
      ContinuousRangeMap<unsigned, ModuleFile *, 4>;
748
749
  /// Mapping from global preprocessing entity IDs to the module in
750
  /// which the preprocessed entity resides along with the offset that should be
751
  /// added to the global preprocessing entity ID to produce a local ID.
752
  GlobalPreprocessedEntityMapType GlobalPreprocessedEntityMap;
753
754
  using GlobalSkippedRangeMapType =
755
      ContinuousRangeMap<unsigned, ModuleFile *, 4>;
756
757
  /// Mapping from global skipped range base IDs to the module in which
758
  /// the skipped ranges reside.
759
  GlobalSkippedRangeMapType GlobalSkippedRangeMap;
760
761
  /// \name CodeGen-relevant special data
762
  /// Fields containing data that is relevant to CodeGen.
763
  //@{
764
765
  /// The IDs of all declarations that fulfill the criteria of
766
  /// "interesting" decls.
767
  ///
768
  /// This contains the data loaded from all EAGERLY_DESERIALIZED_DECLS blocks
769
  /// in the chain. The referenced declarations are deserialized and passed to
770
  /// the consumer eagerly.
771
  SmallVector<uint64_t, 16> EagerlyDeserializedDecls;
772
773
  /// The IDs of all tentative definitions stored in the chain.
774
  ///
775
  /// Sema keeps track of all tentative definitions in a TU because it has to
776
  /// complete them and pass them on to CodeGen. Thus, tentative definitions in
777
  /// the PCH chain must be eagerly deserialized.
778
  SmallVector<uint64_t, 16> TentativeDefinitions;
779
780
  /// The IDs of all CXXRecordDecls stored in the chain whose VTables are
781
  /// used.
782
  ///
783
  /// CodeGen has to emit VTables for these records, so they have to be eagerly
784
  /// deserialized.
785
  SmallVector<uint64_t, 64> VTableUses;
786
787
  /// A snapshot of the pending instantiations in the chain.
788
  ///
789
  /// This record tracks the instantiations that Sema has to perform at the
790
  /// end of the TU. It consists of a pair of values for every pending
791
  /// instantiation where the first value is the ID of the decl and the second
792
  /// is the instantiation location.
793
  SmallVector<uint64_t, 64> PendingInstantiations;
794
795
  //@}
796
797
  /// \name DiagnosticsEngine-relevant special data
798
  /// Fields containing data that is used for generating diagnostics
799
  //@{
800
801
  /// A snapshot of Sema's unused file-scoped variable tracking, for
802
  /// generating warnings.
803
  SmallVector<uint64_t, 16> UnusedFileScopedDecls;
804
805
  /// A list of all the delegating constructors we've seen, to diagnose
806
  /// cycles.
807
  SmallVector<uint64_t, 4> DelegatingCtorDecls;
808
809
  /// Method selectors used in a @selector expression. Used for
810
  /// implementation of -Wselector.
811
  SmallVector<uint64_t, 64> ReferencedSelectorsData;
812
813
  /// A snapshot of Sema's weak undeclared identifier tracking, for
814
  /// generating warnings.
815
  SmallVector<uint64_t, 64> WeakUndeclaredIdentifiers;
816
817
  /// The IDs of type aliases for ext_vectors that exist in the chain.
818
  ///
819
  /// Used by Sema for finding sugared names for ext_vectors in diagnostics.
820
  SmallVector<uint64_t, 4> ExtVectorDecls;
821
822
  //@}
823
824
  /// \name Sema-relevant special data
825
  /// Fields containing data that is used for semantic analysis
826
  //@{
827
828
  /// The IDs of all potentially unused typedef names in the chain.
829
  ///
830
  /// Sema tracks these to emit warnings.
831
  SmallVector<uint64_t, 16> UnusedLocalTypedefNameCandidates;
832
833
  /// Our current depth in #pragma cuda force_host_device begin/end
834
  /// macros.
835
  unsigned ForceCUDAHostDeviceDepth = 0;
836
837
  /// The IDs of the declarations Sema stores directly.
838
  ///
839
  /// Sema tracks a few important decls, such as namespace std, directly.
840
  SmallVector<uint64_t, 4> SemaDeclRefs;
841
842
  /// The IDs of the types ASTContext stores directly.
843
  ///
844
  /// The AST context tracks a few important types, such as va_list, directly.
845
  SmallVector<uint64_t, 16> SpecialTypes;
846
847
  /// The IDs of CUDA-specific declarations ASTContext stores directly.
848
  ///
849
  /// The AST context tracks a few important decls, currently cudaConfigureCall,
850
  /// directly.
851
  SmallVector<uint64_t, 2> CUDASpecialDeclRefs;
852
853
  /// The floating point pragma option settings.
854
  SmallVector<uint64_t, 1> FPPragmaOptions;
855
856
  /// The pragma clang optimize location (if the pragma state is "off").
857
  SourceLocation OptimizeOffPragmaLocation;
858
859
  /// The PragmaMSStructKind pragma ms_struct state if set, or -1.
860
  int PragmaMSStructState = -1;
861
862
  /// The PragmaMSPointersToMembersKind pragma pointers_to_members state.
863
  int PragmaMSPointersToMembersState = -1;
864
  SourceLocation PointersToMembersPragmaLocation;
865
866
  /// The pragma pack state.
867
  Optional<unsigned> PragmaPackCurrentValue;
868
  SourceLocation PragmaPackCurrentLocation;
869
  struct PragmaPackStackEntry {
870
    unsigned Value;
871
    SourceLocation Location;
872
    SourceLocation PushLocation;
873
    StringRef SlotLabel;
874
  };
875
  llvm::SmallVector<PragmaPackStackEntry, 2> PragmaPackStack;
876
  llvm::SmallVector<std::string, 2> PragmaPackStrings;
877
878
  /// The OpenCL extension settings.
879
  OpenCLOptions OpenCLExtensions;
880
881
  /// Extensions required by an OpenCL type.
882
  llvm::DenseMap<const Type *, std::set<std::string>> OpenCLTypeExtMap;
883
884
  /// Extensions required by an OpenCL declaration.
885
  llvm::DenseMap<const Decl *, std::set<std::string>> OpenCLDeclExtMap;
886
887
  /// A list of the namespaces we've seen.
888
  SmallVector<uint64_t, 4> KnownNamespaces;
889
890
  /// A list of undefined decls with internal linkage followed by the
891
  /// SourceLocation of a matching ODR-use.
892
  SmallVector<uint64_t, 8> UndefinedButUsed;
893
894
  /// Delete expressions to analyze at the end of translation unit.
895
  SmallVector<uint64_t, 8> DelayedDeleteExprs;
896
897
  // A list of late parsed template function data.
898
  SmallVector<uint64_t, 1> LateParsedTemplates;
899
900
public:
901
  struct ImportedSubmodule {
902
    serialization::SubmoduleID ID;
903
    SourceLocation ImportLoc;
904
905
    ImportedSubmodule(serialization::SubmoduleID ID, SourceLocation ImportLoc)
906
62
        : ID(ID), ImportLoc(ImportLoc) {}
907
  };
908
909
private:
910
  /// A list of modules that were imported by precompiled headers or
911
  /// any other non-module AST file.
912
  SmallVector<ImportedSubmodule, 2> ImportedModules;
913
  //@}
914
915
  /// The system include root to be used when loading the
916
  /// precompiled header.
917
  std::string isysroot;
918
919
  /// Whether to disable the normal validation performed on precompiled
920
  /// headers when they are loaded.
921
  bool DisableValidation;
922
923
  /// Whether to accept an AST file with compiler errors.
924
  bool AllowASTWithCompilerErrors;
925
926
  /// Whether to accept an AST file that has a different configuration
927
  /// from the current compiler instance.
928
  bool AllowConfigurationMismatch;
929
930
  /// Whether validate system input files.
931
  bool ValidateSystemInputs;
932
933
  /// Whether we are allowed to use the global module index.
934
  bool UseGlobalIndex;
935
936
  /// Whether we have tried loading the global module index yet.
937
  bool TriedLoadingGlobalIndex = false;
938
939
  ///Whether we are currently processing update records.
940
  bool ProcessingUpdateRecords = false;
941
942
  using SwitchCaseMapTy = llvm::DenseMap<unsigned, SwitchCase *>;
943
944
  /// Mapping from switch-case IDs in the chain to switch-case statements
945
  ///
946
  /// Statements usually don't have IDs, but switch cases need them, so that the
947
  /// switch statement can refer to them.
948
  SwitchCaseMapTy SwitchCaseStmts;
949
950
  SwitchCaseMapTy *CurrSwitchCaseStmts;
951
952
  /// The number of source location entries de-serialized from
953
  /// the PCH file.
954
  unsigned NumSLocEntriesRead = 0;
955
956
  /// The number of source location entries in the chain.
957
  unsigned TotalNumSLocEntries = 0;
958
959
  /// The number of statements (and expressions) de-serialized
960
  /// from the chain.
961
  unsigned NumStatementsRead = 0;
962
963
  /// The total number of statements (and expressions) stored
964
  /// in the chain.
965
  unsigned TotalNumStatements = 0;
966
967
  /// The number of macros de-serialized from the chain.
968
  unsigned NumMacrosRead = 0;
969
970
  /// The total number of macros stored in the chain.
971
  unsigned TotalNumMacros = 0;
972
973
  /// The number of lookups into identifier tables.
974
  unsigned NumIdentifierLookups = 0;
975
976
  /// The number of lookups into identifier tables that succeed.
977
  unsigned NumIdentifierLookupHits = 0;
978
979
  /// The number of selectors that have been read.
980
  unsigned NumSelectorsRead = 0;
981
982
  /// The number of method pool entries that have been read.
983
  unsigned NumMethodPoolEntriesRead = 0;
984
985
  /// The number of times we have looked up a selector in the method
986
  /// pool.
987
  unsigned NumMethodPoolLookups = 0;
988
989
  /// The number of times we have looked up a selector in the method
990
  /// pool and found something.
991
  unsigned NumMethodPoolHits = 0;
992
993
  /// The number of times we have looked up a selector in the method
994
  /// pool within a specific module.
995
  unsigned NumMethodPoolTableLookups = 0;
996
997
  /// The number of times we have looked up a selector in the method
998
  /// pool within a specific module and found something.
999
  unsigned NumMethodPoolTableHits = 0;
1000
1001
  /// The total number of method pool entries in the selector table.
1002
  unsigned TotalNumMethodPoolEntries = 0;
1003
1004
  /// Number of lexical decl contexts read/total.
1005
  unsigned NumLexicalDeclContextsRead = 0, TotalLexicalDeclContexts = 0;
1006
1007
  /// Number of visible decl contexts read/total.
1008
  unsigned NumVisibleDeclContextsRead = 0, TotalVisibleDeclContexts = 0;
1009
1010
  /// Total size of modules, in bits, currently loaded
1011
  uint64_t TotalModulesSizeInBits = 0;
1012
1013
  /// Number of Decl/types that are currently deserializing.
1014
  unsigned NumCurrentElementsDeserializing = 0;
1015
1016
  /// Set true while we are in the process of passing deserialized
1017
  /// "interesting" decls to consumer inside FinishedDeserializing().
1018
  /// This is used as a guard to avoid recursively repeating the process of
1019
  /// passing decls to consumer.
1020
  bool PassingDeclsToConsumer = false;
1021
1022
  /// The set of identifiers that were read while the AST reader was
1023
  /// (recursively) loading declarations.
1024
  ///
1025
  /// The declarations on the identifier chain for these identifiers will be
1026
  /// loaded once the recursive loading has completed.
1027
  llvm::MapVector<IdentifierInfo *, SmallVector<uint32_t, 4>>
1028
    PendingIdentifierInfos;
1029
1030
  /// The set of lookup results that we have faked in order to support
1031
  /// merging of partially deserialized decls but that we have not yet removed.
1032
  llvm::SmallMapVector<IdentifierInfo *, SmallVector<NamedDecl*, 2>, 16>
1033
    PendingFakeLookupResults;
1034
1035
  /// The generation number of each identifier, which keeps track of
1036
  /// the last time we loaded information about this identifier.
1037
  llvm::DenseMap<IdentifierInfo *, unsigned> IdentifierGeneration;
1038
1039
  class InterestingDecl {
1040
    Decl *D;
1041
    bool DeclHasPendingBody;
1042
1043
  public:
1044
    InterestingDecl(Decl *D, bool HasBody)
1045
251k
        : D(D), DeclHasPendingBody(HasBody) {}
1046
1047
262k
    Decl *getDecl() { return D; }
1048
1049
    /// Whether the declaration has a pending body.
1050
248k
    bool hasPendingBody() { return DeclHasPendingBody; }
1051
  };
1052
1053
  /// Contains declarations and definitions that could be
1054
  /// "interesting" to the ASTConsumer, when we get that AST consumer.
1055
  ///
1056
  /// "Interesting" declarations are those that have data that may
1057
  /// need to be emitted, such as inline function definitions or
1058
  /// Objective-C protocols.
1059
  std::deque<InterestingDecl> PotentiallyInterestingDecls;
1060
1061
  /// The list of deduced function types that we have not yet read, because
1062
  /// they might contain a deduced return type that refers to a local type
1063
  /// declared within the function.
1064
  SmallVector<std::pair<FunctionDecl *, serialization::TypeID>, 16>
1065
      PendingFunctionTypes;
1066
1067
  /// The list of redeclaration chains that still need to be
1068
  /// reconstructed, and the local offset to the corresponding list
1069
  /// of redeclarations.
1070
  SmallVector<std::pair<Decl *, uint64_t>, 16> PendingDeclChains;
1071
1072
  /// The list of canonical declarations whose redeclaration chains
1073
  /// need to be marked as incomplete once we're done deserializing things.
1074
  SmallVector<Decl *, 16> PendingIncompleteDeclChains;
1075
1076
  /// The Decl IDs for the Sema/Lexical DeclContext of a Decl that has
1077
  /// been loaded but its DeclContext was not set yet.
1078
  struct PendingDeclContextInfo {
1079
    Decl *D;
1080
    serialization::GlobalDeclID SemaDC;
1081
    serialization::GlobalDeclID LexicalDC;
1082
  };
1083
1084
  /// The set of Decls that have been loaded but their DeclContexts are
1085
  /// not set yet.
1086
  ///
1087
  /// The DeclContexts for these Decls will be set once recursive loading has
1088
  /// been completed.
1089
  std::deque<PendingDeclContextInfo> PendingDeclContextInfos;
1090
1091
  /// The set of NamedDecls that have been loaded, but are members of a
1092
  /// context that has been merged into another context where the corresponding
1093
  /// declaration is either missing or has not yet been loaded.
1094
  ///
1095
  /// We will check whether the corresponding declaration is in fact missing
1096
  /// once recursing loading has been completed.
1097
  llvm::SmallVector<NamedDecl *, 16> PendingOdrMergeChecks;
1098
1099
  using DataPointers =
1100
      std::pair<CXXRecordDecl *, struct CXXRecordDecl::DefinitionData *>;
1101
1102
  /// Record definitions in which we found an ODR violation.
1103
  llvm::SmallDenseMap<CXXRecordDecl *, llvm::SmallVector<DataPointers, 2>, 2>
1104
      PendingOdrMergeFailures;
1105
1106
  /// Function definitions in which we found an ODR violation.
1107
  llvm::SmallDenseMap<FunctionDecl *, llvm::SmallVector<FunctionDecl *, 2>, 2>
1108
      PendingFunctionOdrMergeFailures;
1109
1110
  /// Enum definitions in which we found an ODR violation.
1111
  llvm::SmallDenseMap<EnumDecl *, llvm::SmallVector<EnumDecl *, 2>, 2>
1112
      PendingEnumOdrMergeFailures;
1113
1114
  /// DeclContexts in which we have diagnosed an ODR violation.
1115
  llvm::SmallPtrSet<DeclContext*, 2> DiagnosedOdrMergeFailures;
1116
1117
  /// The set of Objective-C categories that have been deserialized
1118
  /// since the last time the declaration chains were linked.
1119
  llvm::SmallPtrSet<ObjCCategoryDecl *, 16> CategoriesDeserialized;
1120
1121
  /// The set of Objective-C class definitions that have already been
1122
  /// loaded, for which we will need to check for categories whenever a new
1123
  /// module is loaded.
1124
  SmallVector<ObjCInterfaceDecl *, 16> ObjCClassesLoaded;
1125
1126
  using KeyDeclsMap =
1127
      llvm::DenseMap<Decl *, SmallVector<serialization::DeclID, 2>>;
1128
1129
  /// A mapping from canonical declarations to the set of global
1130
  /// declaration IDs for key declaration that have been merged with that
1131
  /// canonical declaration. A key declaration is a formerly-canonical
1132
  /// declaration whose module did not import any other key declaration for that
1133
  /// entity. These are the IDs that we use as keys when finding redecl chains.
1134
  KeyDeclsMap KeyDecls;
1135
1136
  /// A mapping from DeclContexts to the semantic DeclContext that we
1137
  /// are treating as the definition of the entity. This is used, for instance,
1138
  /// when merging implicit instantiations of class templates across modules.
1139
  llvm::DenseMap<DeclContext *, DeclContext *> MergedDeclContexts;
1140
1141
  /// A mapping from canonical declarations of enums to their canonical
1142
  /// definitions. Only populated when using modules in C++.
1143
  llvm::DenseMap<EnumDecl *, EnumDecl *> EnumDefinitions;
1144
1145
  /// When reading a Stmt tree, Stmt operands are placed in this stack.
1146
  SmallVector<Stmt *, 16> StmtStack;
1147
1148
  /// What kind of records we are reading.
1149
  enum ReadingKind {
1150
    Read_None, Read_Decl, Read_Type, Read_Stmt
1151
  };
1152
1153
  /// What kind of records we are reading.
1154
  ReadingKind ReadingKind = Read_None;
1155
1156
  /// RAII object to change the reading kind.
1157
  class ReadingKindTracker {
1158
    ASTReader &Reader;
1159
    enum ReadingKind PrevKind;
1160
1161
  public:
1162
    ReadingKindTracker(enum ReadingKind newKind, ASTReader &reader)
1163
738k
        : Reader(reader), PrevKind(Reader.ReadingKind) {
1164
738k
      Reader.ReadingKind = newKind;
1165
738k
    }
1166
1167
    ReadingKindTracker(const ReadingKindTracker &) = delete;
1168
    ReadingKindTracker &operator=(const ReadingKindTracker &) = delete;
1169
738k
    ~ReadingKindTracker() { Reader.ReadingKind = PrevKind; }
1170
  };
1171
1172
  /// RAII object to mark the start of processing updates.
1173
  class ProcessingUpdatesRAIIObj {
1174
    ASTReader &Reader;
1175
    bool PrevState;
1176
1177
  public:
1178
    ProcessingUpdatesRAIIObj(ASTReader &reader)
1179
255k
        : Reader(reader), PrevState(Reader.ProcessingUpdateRecords) {
1180
255k
      Reader.ProcessingUpdateRecords = true;
1181
255k
    }
1182
1183
    ProcessingUpdatesRAIIObj(const ProcessingUpdatesRAIIObj &) = delete;
1184
    ProcessingUpdatesRAIIObj &
1185
    operator=(const ProcessingUpdatesRAIIObj &) = delete;
1186
255k
    ~ProcessingUpdatesRAIIObj() { Reader.ProcessingUpdateRecords = PrevState; }
1187
  };
1188
1189
  /// Suggested contents of the predefines buffer, after this
1190
  /// PCH file has been processed.
1191
  ///
1192
  /// In most cases, this string will be empty, because the predefines
1193
  /// buffer computed to build the PCH file will be identical to the
1194
  /// predefines buffer computed from the command line. However, when
1195
  /// there are differences that the PCH reader can work around, this
1196
  /// predefines buffer may contain additional definitions.
1197
  std::string SuggestedPredefines;
1198
1199
  llvm::DenseMap<const Decl *, bool> DefinitionSource;
1200
1201
  /// Reads a statement from the specified cursor.
1202
  Stmt *ReadStmtFromStream(ModuleFile &F);
1203
1204
  struct InputFileInfo {
1205
    std::string Filename;
1206
    off_t StoredSize;
1207
    time_t StoredTime;
1208
    bool Overridden;
1209
    bool Transient;
1210
    bool TopLevelModuleMap;
1211
  };
1212
1213
  /// Reads the stored information about an input file.
1214
  InputFileInfo readInputFileInfo(ModuleFile &F, unsigned ID);
1215
1216
  /// Retrieve the file entry and 'overridden' bit for an input
1217
  /// file in the given module file.
1218
  serialization::InputFile getInputFile(ModuleFile &F, unsigned ID,
1219
                                        bool Complain = true);
1220
1221
public:
1222
  void ResolveImportedPath(ModuleFile &M, std::string &Filename);
1223
  static void ResolveImportedPath(std::string &Filename, StringRef Prefix);
1224
1225
  /// Returns the first key declaration for the given declaration. This
1226
  /// is one that is formerly-canonical (or still canonical) and whose module
1227
  /// did not import any other key declaration of the entity.
1228
676
  Decl *getKeyDeclaration(Decl *D) {
1229
676
    D = D->getCanonicalDecl();
1230
676
    if (D->isFromASTFile())
1231
126
      return D;
1232
550
1233
550
    auto I = KeyDecls.find(D);
1234
550
    if (I == KeyDecls.end() || 
I->second.empty()40
)
1235
510
      return D;
1236
40
    return GetExistingDecl(I->second[0]);
1237
40
  }
1238
80
  const Decl *getKeyDeclaration(const Decl *D) {
1239
80
    return getKeyDeclaration(const_cast<Decl*>(D));
1240
80
  }
1241
1242
  /// Run a callback on each imported key declaration of \p D.
1243
  template <typename Fn>
1244
396
  void forEachImportedKeyDecl(const Decl *D, Fn Visit) {
1245
396
    D = D->getCanonicalDecl();
1246
396
    if (D->isFromASTFile())
1247
23
      Visit(D);
1248
396
1249
396
    auto It = KeyDecls.find(const_cast<Decl*>(D));
1250
396
    if (It != KeyDecls.end())
1251
5
      for (auto ID : It->second)
1252
11
        Visit(GetExistingDecl(ID));
1253
396
  }
ASTWriter.cpp:void clang::ASTReader::forEachImportedKeyDecl<clang::ASTWriter::ResolvedExceptionSpec(clang::FunctionDecl const*)::$_14>(clang::Decl const*, clang::ASTWriter::ResolvedExceptionSpec(clang::FunctionDecl const*)::$_14)
Line
Count
Source
1244
355
  void forEachImportedKeyDecl(const Decl *D, Fn Visit) {
1245
355
    D = D->getCanonicalDecl();
1246
355
    if (D->isFromASTFile())
1247
19
      Visit(D);
1248
355
1249
355
    auto It = KeyDecls.find(const_cast<Decl*>(D));
1250
355
    if (It != KeyDecls.end())
1251
3
      for (auto ID : It->second)
1252
9
        Visit(GetExistingDecl(ID));
1253
355
  }
ASTWriter.cpp:void clang::ASTReader::forEachImportedKeyDecl<clang::ASTWriter::DeducedReturnType(clang::FunctionDecl const*, clang::QualType)::$_15>(clang::Decl const*, clang::ASTWriter::DeducedReturnType(clang::FunctionDecl const*, clang::QualType)::$_15)
Line
Count
Source
1244
32
  void forEachImportedKeyDecl(const Decl *D, Fn Visit) {
1245
32
    D = D->getCanonicalDecl();
1246
32
    if (D->isFromASTFile())
1247
1
      Visit(D);
1248
32
1249
32
    auto It = KeyDecls.find(const_cast<Decl*>(D));
1250
32
    if (It != KeyDecls.end())
1251
0
      for (auto ID : It->second)
1252
0
        Visit(GetExistingDecl(ID));
1253
32
  }
ASTWriter.cpp:void clang::ASTReader::forEachImportedKeyDecl<clang::ASTWriter::ResolvedOperatorDelete(clang::CXXDestructorDecl const*, clang::FunctionDecl const*, clang::Expr*)::$_16>(clang::Decl const*, clang::ASTWriter::ResolvedOperatorDelete(clang::CXXDestructorDecl const*, clang::FunctionDecl const*, clang::Expr*)::$_16)
Line
Count
Source
1244
9
  void forEachImportedKeyDecl(const Decl *D, Fn Visit) {
1245
9
    D = D->getCanonicalDecl();
1246
9
    if (D->isFromASTFile())
1247
3
      Visit(D);
1248
9
1249
9
    auto It = KeyDecls.find(const_cast<Decl*>(D));
1250
9
    if (It != KeyDecls.end())
1251
2
      for (auto ID : It->second)
1252
2
        Visit(GetExistingDecl(ID));
1253
9
  }
1254
1255
  /// Get the loaded lookup tables for \p Primary, if any.
1256
  const serialization::reader::DeclContextLookupTable *
1257
  getLoadedLookupTables(DeclContext *Primary) const;
1258
1259
private:
1260
  struct ImportedModule {
1261
    ModuleFile *Mod;
1262
    ModuleFile *ImportedBy;
1263
    SourceLocation ImportLoc;
1264
1265
    ImportedModule(ModuleFile *Mod,
1266
                   ModuleFile *ImportedBy,
1267
                   SourceLocation ImportLoc)
1268
6.14k
        : Mod(Mod), ImportedBy(ImportedBy), ImportLoc(ImportLoc) {}
1269
  };
1270
1271
  ASTReadResult ReadASTCore(StringRef FileName, ModuleKind Type,
1272
                            SourceLocation ImportLoc, ModuleFile *ImportedBy,
1273
                            SmallVectorImpl<ImportedModule> &Loaded,
1274
                            off_t ExpectedSize, time_t ExpectedModTime,
1275
                            ASTFileSignature ExpectedSignature,
1276
                            unsigned ClientLoadCapabilities);
1277
  ASTReadResult ReadControlBlock(ModuleFile &F,
1278
                                 SmallVectorImpl<ImportedModule> &Loaded,
1279
                                 const ModuleFile *ImportedBy,
1280
                                 unsigned ClientLoadCapabilities);
1281
  static ASTReadResult ReadOptionsBlock(
1282
      llvm::BitstreamCursor &Stream, unsigned ClientLoadCapabilities,
1283
      bool AllowCompatibleConfigurationMismatch, ASTReaderListener &Listener,
1284
      std::string &SuggestedPredefines);
1285
1286
  /// Read the unhashed control block.
1287
  ///
1288
  /// This has no effect on \c F.Stream, instead creating a fresh cursor from
1289
  /// \c F.Data and reading ahead.
1290
  ASTReadResult readUnhashedControlBlock(ModuleFile &F, bool WasImportedBy,
1291
                                         unsigned ClientLoadCapabilities);
1292
1293
  static ASTReadResult
1294
  readUnhashedControlBlockImpl(ModuleFile *F, llvm::StringRef StreamData,
1295
                               unsigned ClientLoadCapabilities,
1296
                               bool AllowCompatibleConfigurationMismatch,
1297
                               ASTReaderListener *Listener,
1298
                               bool ValidateDiagnosticOptions);
1299
1300
  ASTReadResult ReadASTBlock(ModuleFile &F, unsigned ClientLoadCapabilities);
1301
  ASTReadResult ReadExtensionBlock(ModuleFile &F);
1302
  void ReadModuleOffsetMap(ModuleFile &F) const;
1303
  bool ParseLineTable(ModuleFile &F, const RecordData &Record);
1304
  bool ReadSourceManagerBlock(ModuleFile &F);
1305
  llvm::BitstreamCursor &SLocCursorForID(int ID);
1306
  SourceLocation getImportLocation(ModuleFile *F);
1307
  ASTReadResult ReadModuleMapFileBlock(RecordData &Record, ModuleFile &F,
1308
                                       const ModuleFile *ImportedBy,
1309
                                       unsigned ClientLoadCapabilities);
1310
  ASTReadResult ReadSubmoduleBlock(ModuleFile &F,
1311
                                   unsigned ClientLoadCapabilities);
1312
  static bool ParseLanguageOptions(const RecordData &Record, bool Complain,
1313
                                   ASTReaderListener &Listener,
1314
                                   bool AllowCompatibleDifferences);
1315
  static bool ParseTargetOptions(const RecordData &Record, bool Complain,
1316
                                 ASTReaderListener &Listener,
1317
                                 bool AllowCompatibleDifferences);
1318
  static bool ParseDiagnosticOptions(const RecordData &Record, bool Complain,
1319
                                     ASTReaderListener &Listener);
1320
  static bool ParseFileSystemOptions(const RecordData &Record, bool Complain,
1321
                                     ASTReaderListener &Listener);
1322
  static bool ParseHeaderSearchOptions(const RecordData &Record, bool Complain,
1323
                                       ASTReaderListener &Listener);
1324
  static bool ParsePreprocessorOptions(const RecordData &Record, bool Complain,
1325
                                       ASTReaderListener &Listener,
1326
                                       std::string &SuggestedPredefines);
1327
1328
  struct RecordLocation {
1329
    ModuleFile *F;
1330
    uint64_t Offset;
1331
1332
415k
    RecordLocation(ModuleFile *M, uint64_t O) : F(M), Offset(O) {}
1333
  };
1334
1335
  QualType readTypeRecord(unsigned Index);
1336
  void readExceptionSpec(ModuleFile &ModuleFile,
1337
                         SmallVectorImpl<QualType> &ExceptionStorage,
1338
                         FunctionProtoType::ExceptionSpecInfo &ESI,
1339
                         const RecordData &Record, unsigned &Index);
1340
  RecordLocation TypeCursorForIndex(unsigned Index);
1341
  void LoadedDecl(unsigned Index, Decl *D);
1342
  Decl *ReadDeclRecord(serialization::DeclID ID);
1343
  void markIncompleteDeclChain(Decl *Canon);
1344
1345
  /// Returns the most recent declaration of a declaration (which must be
1346
  /// of a redeclarable kind) that is either local or has already been loaded
1347
  /// merged into its redecl chain.
1348
  Decl *getMostRecentExistingDecl(Decl *D);
1349
1350
  RecordLocation DeclCursorForID(serialization::DeclID ID,
1351
                                 SourceLocation &Location);
1352
  void loadDeclUpdateRecords(PendingUpdateRecord &Record);
1353
  void loadPendingDeclChain(Decl *D, uint64_t LocalOffset);
1354
  void loadObjCCategories(serialization::GlobalDeclID ID, ObjCInterfaceDecl *D,
1355
                          unsigned PreviousGeneration = 0);
1356
1357
  RecordLocation getLocalBitOffset(uint64_t GlobalOffset);
1358
  uint64_t getGlobalBitOffset(ModuleFile &M, uint32_t LocalOffset);
1359
1360
  /// Returns the first preprocessed entity ID that begins or ends after
1361
  /// \arg Loc.
1362
  serialization::PreprocessedEntityID
1363
  findPreprocessedEntity(SourceLocation Loc, bool EndsAfter) const;
1364
1365
  /// Find the next module that contains entities and return the ID
1366
  /// of the first entry.
1367
  ///
1368
  /// \param SLocMapI points at a chunk of a module that contains no
1369
  /// preprocessed entities or the entities it contains are not the
1370
  /// ones we are looking for.
1371
  serialization::PreprocessedEntityID
1372
    findNextPreprocessedEntity(
1373
                        GlobalSLocOffsetMapType::const_iterator SLocMapI) const;
1374
1375
  /// Returns (ModuleFile, Local index) pair for \p GlobalIndex of a
1376
  /// preprocessed entity.
1377
  std::pair<ModuleFile *, unsigned>
1378
    getModulePreprocessedEntity(unsigned GlobalIndex);
1379
1380
  /// Returns (begin, end) pair for the preprocessed entities of a
1381
  /// particular module.
1382
  llvm::iterator_range<PreprocessingRecord::iterator>
1383
  getModulePreprocessedEntities(ModuleFile &Mod) const;
1384
1385
public:
1386
  class ModuleDeclIterator
1387
      : public llvm::iterator_adaptor_base<
1388
            ModuleDeclIterator, const serialization::LocalDeclID *,
1389
            std::random_access_iterator_tag, const Decl *, ptrdiff_t,
1390
            const Decl *, const Decl *> {
1391
    ASTReader *Reader = nullptr;
1392
    ModuleFile *Mod = nullptr;
1393
1394
  public:
1395
0
    ModuleDeclIterator() : iterator_adaptor_base(nullptr) {}
1396
1397
    ModuleDeclIterator(ASTReader *Reader, ModuleFile *Mod,
1398
                       const serialization::LocalDeclID *Pos)
1399
22
        : iterator_adaptor_base(Pos), Reader(Reader), Mod(Mod) {}
1400
1401
67
    value_type operator*() const {
1402
67
      return Reader->GetDecl(Reader->getGlobalDeclID(*Mod, *I));
1403
67
    }
1404
1405
0
    value_type operator->() const { return **this; }
1406
1407
78
    bool operator==(const ModuleDeclIterator &RHS) const {
1408
78
      assert(Reader == RHS.Reader && Mod == RHS.Mod);
1409
78
      return I == RHS.I;
1410
78
    }
1411
  };
1412
1413
  llvm::iterator_range<ModuleDeclIterator>
1414
  getModuleFileLevelDecls(ModuleFile &Mod);
1415
1416
private:
1417
  void PassInterestingDeclsToConsumer();
1418
  void PassInterestingDeclToConsumer(Decl *D);
1419
1420
  void finishPendingActions();
1421
  void diagnoseOdrViolations();
1422
1423
  void pushExternalDeclIntoScope(NamedDecl *D, DeclarationName Name);
1424
1425
  void addPendingDeclContextInfo(Decl *D,
1426
                                 serialization::GlobalDeclID SemaDC,
1427
22.7k
                                 serialization::GlobalDeclID LexicalDC) {
1428
22.7k
    assert(D);
1429
22.7k
    PendingDeclContextInfo Info = { D, SemaDC, LexicalDC };
1430
22.7k
    PendingDeclContextInfos.push_back(Info);
1431
22.7k
  }
1432
1433
  /// Produce an error diagnostic and return true.
1434
  ///
1435
  /// This routine should only be used for fatal errors that have to
1436
  /// do with non-routine failures (e.g., corrupted AST file).
1437
  void Error(StringRef Msg) const;
1438
  void Error(unsigned DiagID, StringRef Arg1 = StringRef(),
1439
             StringRef Arg2 = StringRef()) const;
1440
  void Error(llvm::Error &&Err) const;
1441
1442
public:
1443
  /// Load the AST file and validate its contents against the given
1444
  /// Preprocessor.
1445
  ///
1446
  /// \param PP the preprocessor associated with the context in which this
1447
  /// precompiled header will be loaded.
1448
  ///
1449
  /// \param Context the AST context that this precompiled header will be
1450
  /// loaded into, if any.
1451
  ///
1452
  /// \param PCHContainerRdr the PCHContainerOperations to use for loading and
1453
  /// creating modules.
1454
  ///
1455
  /// \param Extensions the list of module file extensions that can be loaded
1456
  /// from the AST files.
1457
  ///
1458
  /// \param isysroot If non-NULL, the system include path specified by the
1459
  /// user. This is only used with relocatable PCH files. If non-NULL,
1460
  /// a relocatable PCH file will use the default path "/".
1461
  ///
1462
  /// \param DisableValidation If true, the AST reader will suppress most
1463
  /// of its regular consistency checking, allowing the use of precompiled
1464
  /// headers that cannot be determined to be compatible.
1465
  ///
1466
  /// \param AllowASTWithCompilerErrors If true, the AST reader will accept an
1467
  /// AST file the was created out of an AST with compiler errors,
1468
  /// otherwise it will reject it.
1469
  ///
1470
  /// \param AllowConfigurationMismatch If true, the AST reader will not check
1471
  /// for configuration differences between the AST file and the invocation.
1472
  ///
1473
  /// \param ValidateSystemInputs If true, the AST reader will validate
1474
  /// system input files in addition to user input files. This is only
1475
  /// meaningful if \p DisableValidation is false.
1476
  ///
1477
  /// \param UseGlobalIndex If true, the AST reader will try to load and use
1478
  /// the global module index.
1479
  ///
1480
  /// \param ReadTimer If non-null, a timer used to track the time spent
1481
  /// deserializing.
1482
  ASTReader(Preprocessor &PP, InMemoryModuleCache &ModuleCache,
1483
            ASTContext *Context, const PCHContainerReader &PCHContainerRdr,
1484
            ArrayRef<std::shared_ptr<ModuleFileExtension>> Extensions,
1485
            StringRef isysroot = "", bool DisableValidation = false,
1486
            bool AllowASTWithCompilerErrors = false,
1487
            bool AllowConfigurationMismatch = false,
1488
            bool ValidateSystemInputs = false, bool UseGlobalIndex = true,
1489
            std::unique_ptr<llvm::Timer> ReadTimer = {});
1490
  ASTReader(const ASTReader &) = delete;
1491
  ASTReader &operator=(const ASTReader &) = delete;
1492
  ~ASTReader() override;
1493
1494
123k
  SourceManager &getSourceManager() const { return SourceMgr; }
1495
15.0k
  FileManager &getFileManager() const { return FileMgr; }
1496
2
  DiagnosticsEngine &getDiags() const { return Diags; }
1497
1498
  /// Flags that indicate what kind of AST loading failures the client
1499
  /// of the AST reader can directly handle.
1500
  ///
1501
  /// When a client states that it can handle a particular kind of failure,
1502
  /// the AST reader will not emit errors when producing that kind of failure.
1503
  enum LoadFailureCapabilities {
1504
    /// The client can't handle any AST loading failures.
1505
    ARR_None = 0,
1506
1507
    /// The client can handle an AST file that cannot load because it
1508
    /// is missing.
1509
    ARR_Missing = 0x1,
1510
1511
    /// The client can handle an AST file that cannot load because it
1512
    /// is out-of-date relative to its input files.
1513
    ARR_OutOfDate = 0x2,
1514
1515
    /// The client can handle an AST file that cannot load because it
1516
    /// was built with a different version of Clang.
1517
    ARR_VersionMismatch = 0x4,
1518
1519
    /// The client can handle an AST file that cannot load because it's
1520
    /// compiled configuration doesn't match that of the context it was
1521
    /// loaded into.
1522
    ARR_ConfigurationMismatch = 0x8
1523
  };
1524
1525
  /// Load the AST file designated by the given file name.
1526
  ///
1527
  /// \param FileName The name of the AST file to load.
1528
  ///
1529
  /// \param Type The kind of AST being loaded, e.g., PCH, module, main file,
1530
  /// or preamble.
1531
  ///
1532
  /// \param ImportLoc the location where the module file will be considered as
1533
  /// imported from. For non-module AST types it should be invalid.
1534
  ///
1535
  /// \param ClientLoadCapabilities The set of client load-failure
1536
  /// capabilities, represented as a bitset of the enumerators of
1537
  /// LoadFailureCapabilities.
1538
  ///
1539
  /// \param Imported optional out-parameter to append the list of modules
1540
  /// that were imported by precompiled headers or any other non-module AST file
1541
  ASTReadResult ReadAST(StringRef FileName, ModuleKind Type,
1542
                        SourceLocation ImportLoc,
1543
                        unsigned ClientLoadCapabilities,
1544
                        SmallVectorImpl<ImportedSubmodule> *Imported = nullptr);
1545
1546
  /// Make the entities in the given module and any of its (non-explicit)
1547
  /// submodules visible to name lookup.
1548
  ///
1549
  /// \param Mod The module whose names should be made visible.
1550
  ///
1551
  /// \param NameVisibility The level of visibility to give the names in the
1552
  /// module.  Visibility can only be increased over time.
1553
  ///
1554
  /// \param ImportLoc The location at which the import occurs.
1555
  void makeModuleVisible(Module *Mod,
1556
                         Module::NameVisibilityKind NameVisibility,
1557
                         SourceLocation ImportLoc);
1558
1559
  /// Make the names within this set of hidden names visible.
1560
  void makeNamesVisible(const HiddenNames &Names, Module *Owner);
1561
1562
  /// Note that MergedDef is a redefinition of the canonical definition
1563
  /// Def, so Def should be visible whenever MergedDef is.
1564
  void mergeDefinitionVisibility(NamedDecl *Def, NamedDecl *MergedDef);
1565
1566
  /// Take the AST callbacks listener.
1567
812
  std::unique_ptr<ASTReaderListener> takeListener() {
1568
812
    return std::move(Listener);
1569
812
  }
1570
1571
  /// Set the AST callbacks listener.
1572
946
  void setListener(std::unique_ptr<ASTReaderListener> Listener) {
1573
946
    this->Listener = std::move(Listener);
1574
946
  }
1575
1576
  /// Add an AST callback listener.
1577
  ///
1578
  /// Takes ownership of \p L.
1579
78
  void addListener(std::unique_ptr<ASTReaderListener> L) {
1580
78
    if (Listener)
1581
78
      L = llvm::make_unique<ChainedASTReaderListener>(std::move(L),
1582
78
                                                      std::move(Listener));
1583
78
    Listener = std::move(L);
1584
78
  }
1585
1586
  /// RAII object to temporarily add an AST callback listener.
1587
  class ListenerScope {
1588
    ASTReader &Reader;
1589
    bool Chained = false;
1590
1591
  public:
1592
    ListenerScope(ASTReader &Reader, std::unique_ptr<ASTReaderListener> L)
1593
406
        : Reader(Reader) {
1594
406
      auto Old = Reader.takeListener();
1595
406
      if (Old) {
1596
406
        Chained = true;
1597
406
        L = llvm::make_unique<ChainedASTReaderListener>(std::move(L),
1598
406
                                                        std::move(Old));
1599
406
      }
1600
406
      Reader.setListener(std::move(L));
1601
406
    }
1602
1603
406
    ~ListenerScope() {
1604
406
      auto New = Reader.takeListener();
1605
406
      if (Chained)
1606
406
        Reader.setListener(static_cast<ChainedASTReaderListener *>(New.get())
1607
406
                               ->takeSecond());
1608
406
    }
1609
  };
1610
1611
  /// Set the AST deserialization listener.
1612
  void setDeserializationListener(ASTDeserializationListener *Listener,
1613
                                  bool TakeOwnership = false);
1614
1615
  /// Get the AST deserialization listener.
1616
0
  ASTDeserializationListener *getDeserializationListener() {
1617
0
    return DeserializationListener;
1618
0
  }
1619
1620
  /// Determine whether this AST reader has a global index.
1621
2.19k
  bool hasGlobalIndex() const { return (bool)GlobalIndex; }
1622
1623
  /// Return global module index.
1624
3
  GlobalModuleIndex *getGlobalIndex() { return GlobalIndex.get(); }
1625
1626
  /// Reset reader for a reload try.
1627
2
  void resetForReload() { TriedLoadingGlobalIndex = false; }
1628
1629
  /// Attempts to load the global index.
1630
  ///
1631
  /// \returns true if loading the global index has failed for any reason.
1632
  bool loadGlobalIndex();
1633
1634
  /// Determine whether we tried to load the global index, but failed,
1635
  /// e.g., because it is out-of-date or does not exist.
1636
  bool isGlobalIndexUnavailable() const;
1637
1638
  /// Initializes the ASTContext
1639
  void InitializeContext();
1640
1641
  /// Update the state of Sema after loading some additional modules.
1642
  void UpdateSema();
1643
1644
  /// Add in-memory (virtual file) buffer.
1645
  void addInMemoryBuffer(StringRef &FileName,
1646
75
                         std::unique_ptr<llvm::MemoryBuffer> Buffer) {
1647
75
    ModuleMgr.addInMemoryBuffer(FileName, std::move(Buffer));
1648
75
  }
1649
1650
  /// Finalizes the AST reader's state before writing an AST file to
1651
  /// disk.
1652
  ///
1653
  /// This operation may undo temporary state in the AST that should not be
1654
  /// emitted.
1655
  void finalizeForWriting();
1656
1657
  /// Retrieve the module manager.
1658
11.5k
  ModuleManager &getModuleManager() { return ModuleMgr; }
1659
1660
  /// Retrieve the preprocessor.
1661
466k
  Preprocessor &getPreprocessor() const { return PP; }
1662
1663
  /// Retrieve the name of the original source file name for the primary
1664
  /// module file.
1665
133
  StringRef getOriginalSourceFile() {
1666
133
    return ModuleMgr.getPrimaryModule().OriginalSourceFileName;
1667
133
  }
1668
1669
  /// Retrieve the name of the original source file name directly from
1670
  /// the AST file, without actually loading the AST file.
1671
  static std::string
1672
  getOriginalSourceFile(const std::string &ASTFileName, FileManager &FileMgr,
1673
                        const PCHContainerReader &PCHContainerRdr,
1674
                        DiagnosticsEngine &Diags);
1675
1676
  /// Read the control block for the named AST file.
1677
  ///
1678
  /// \returns true if an error occurred, false otherwise.
1679
  static bool
1680
  readASTFileControlBlock(StringRef Filename, FileManager &FileMgr,
1681
                          const PCHContainerReader &PCHContainerRdr,
1682
                          bool FindModuleFileExtensions,
1683
                          ASTReaderListener &Listener,
1684
                          bool ValidateDiagnosticOptions);
1685
1686
  /// Determine whether the given AST file is acceptable to load into a
1687
  /// translation unit with the given language and target options.
1688
  static bool isAcceptableASTFile(StringRef Filename, FileManager &FileMgr,
1689
                                  const PCHContainerReader &PCHContainerRdr,
1690
                                  const LangOptions &LangOpts,
1691
                                  const TargetOptions &TargetOpts,
1692
                                  const PreprocessorOptions &PPOpts,
1693
                                  StringRef ExistingModuleCachePath);
1694
1695
  /// Returns the suggested contents of the predefines buffer,
1696
  /// which contains a (typically-empty) subset of the predefines
1697
  /// build prior to including the precompiled header.
1698
2.39k
  const std::string &getSuggestedPredefines() { return SuggestedPredefines; }
1699
1700
  /// Read a preallocated preprocessed entity from the external source.
1701
  ///
1702
  /// \returns null if an error occurred that prevented the preprocessed
1703
  /// entity from being loaded.
1704
  PreprocessedEntity *ReadPreprocessedEntity(unsigned Index) override;
1705
1706
  /// Returns a pair of [Begin, End) indices of preallocated
1707
  /// preprocessed entities that \p Range encompasses.
1708
  std::pair<unsigned, unsigned>
1709
      findPreprocessedEntitiesInRange(SourceRange Range) override;
1710
1711
  /// Optionally returns true or false if the preallocated preprocessed
1712
  /// entity with index \p Index came from file \p FID.
1713
  Optional<bool> isPreprocessedEntityInFileID(unsigned Index,
1714
                                              FileID FID) override;
1715
1716
  /// Read a preallocated skipped range from the external source.
1717
  SourceRange ReadSkippedRange(unsigned Index) override;
1718
1719
  /// Read the header file information for the given file entry.
1720
  HeaderFileInfo GetHeaderFileInfo(const FileEntry *FE) override;
1721
1722
  void ReadPragmaDiagnosticMappings(DiagnosticsEngine &Diag);
1723
1724
  /// Returns the number of source locations found in the chain.
1725
12.4k
  unsigned getTotalNumSLocs() const {
1726
12.4k
    return TotalNumSLocEntries;
1727
12.4k
  }
1728
1729
  /// Returns the number of identifiers found in the chain.
1730
13.6k
  unsigned getTotalNumIdentifiers() const {
1731
13.6k
    return static_cast<unsigned>(IdentifiersLoaded.size());
1732
13.6k
  }
1733
1734
  /// Returns the number of macros found in the chain.
1735
12.2k
  unsigned getTotalNumMacros() const {
1736
12.2k
    return static_cast<unsigned>(MacrosLoaded.size());
1737
12.2k
  }
1738
1739
  /// Returns the number of types found in the chain.
1740
14.4k
  unsigned getTotalNumTypes() const {
1741
14.4k
    return static_cast<unsigned>(TypesLoaded.size());
1742
14.4k
  }
1743
1744
  /// Returns the number of declarations found in the chain.
1745
14.3k
  unsigned getTotalNumDecls() const {
1746
14.3k
    return static_cast<unsigned>(DeclsLoaded.size());
1747
14.3k
  }
1748
1749
  /// Returns the number of submodules known.
1750
9.44k
  unsigned getTotalNumSubmodules() const {
1751
9.44k
    return static_cast<unsigned>(SubmodulesLoaded.size());
1752
9.44k
  }
1753
1754
  /// Returns the number of selectors found in the chain.
1755
3.02k
  unsigned getTotalNumSelectors() const {
1756
3.02k
    return static_cast<unsigned>(SelectorsLoaded.size());
1757
3.02k
  }
1758
1759
  /// Returns the number of preprocessed entities known to the AST
1760
  /// reader.
1761
457
  unsigned getTotalNumPreprocessedEntities() const {
1762
457
    unsigned Result = 0;
1763
457
    for (const auto &M : ModuleMgr)
1764
470
      Result += M.NumPreprocessedEntities;
1765
457
    return Result;
1766
457
  }
1767
1768
  /// Reads a TemplateArgumentLocInfo appropriate for the
1769
  /// given TemplateArgument kind.
1770
  TemplateArgumentLocInfo
1771
  GetTemplateArgumentLocInfo(ModuleFile &F, TemplateArgument::ArgKind Kind,
1772
                             const RecordData &Record, unsigned &Idx);
1773
1774
  /// Reads a TemplateArgumentLoc.
1775
  TemplateArgumentLoc
1776
  ReadTemplateArgumentLoc(ModuleFile &F,
1777
                          const RecordData &Record, unsigned &Idx);
1778
1779
  const ASTTemplateArgumentListInfo*
1780
  ReadASTTemplateArgumentListInfo(ModuleFile &F,
1781
                                  const RecordData &Record, unsigned &Index);
1782
1783
  /// Reads a declarator info from the given record.
1784
  TypeSourceInfo *GetTypeSourceInfo(ModuleFile &F,
1785
                                    const RecordData &Record, unsigned &Idx);
1786
1787
  /// Raad the type locations for the given TInfo.
1788
  void ReadTypeLoc(ModuleFile &F, const RecordData &Record, unsigned &Idx,
1789
                   TypeLoc TL);
1790
1791
  /// Resolve a type ID into a type, potentially building a new
1792
  /// type.
1793
  QualType GetType(serialization::TypeID ID);
1794
1795
  /// Resolve a local type ID within a given AST file into a type.
1796
  QualType getLocalType(ModuleFile &F, unsigned LocalID);
1797
1798
  /// Map a local type ID within a given AST file into a global type ID.
1799
  serialization::TypeID getGlobalTypeID(ModuleFile &F, unsigned LocalID) const;
1800
1801
  /// Read a type from the current position in the given record, which
1802
  /// was read from the given AST file.
1803
1.00M
  QualType readType(ModuleFile &F, const RecordData &Record, unsigned &Idx) {
1804
1.00M
    if (Idx >= Record.size())
1805
0
      return {};
1806
1.00M
1807
1.00M
    return getLocalType(F, Record[Idx++]);
1808
1.00M
  }
1809
1810
  /// Map from a local declaration ID within a given module to a
1811
  /// global declaration ID.
1812
  serialization::DeclID getGlobalDeclID(ModuleFile &F,
1813
                                      serialization::LocalDeclID LocalID) const;
1814
1815
  /// Returns true if global DeclID \p ID originated from module \p M.
1816
  bool isDeclIDFromModule(serialization::GlobalDeclID ID, ModuleFile &M) const;
1817
1818
  /// Retrieve the module file that owns the given declaration, or NULL
1819
  /// if the declaration is not from a module file.
1820
  ModuleFile *getOwningModuleFile(const Decl *D);
1821
1822
  /// Get the best name we know for the module that owns the given
1823
  /// declaration, or an empty string if the declaration is not from a module.
1824
  std::string getOwningModuleNameForDiagnostic(const Decl *D);
1825
1826
  /// Returns the source location for the decl \p ID.
1827
  SourceLocation getSourceLocationForDeclID(serialization::GlobalDeclID ID);
1828
1829
  /// Resolve a declaration ID into a declaration, potentially
1830
  /// building a new declaration.
1831
  Decl *GetDecl(serialization::DeclID ID);
1832
  Decl *GetExternalDecl(uint32_t ID) override;
1833
1834
  /// Resolve a declaration ID into a declaration. Return 0 if it's not
1835
  /// been loaded yet.
1836
  Decl *GetExistingDecl(serialization::DeclID ID);
1837
1838
  /// Reads a declaration with the given local ID in the given module.
1839
35.2k
  Decl *GetLocalDecl(ModuleFile &F, uint32_t LocalID) {
1840
35.2k
    return GetDecl(getGlobalDeclID(F, LocalID));
1841
35.2k
  }
1842
1843
  /// Reads a declaration with the given local ID in the given module.
1844
  ///
1845
  /// \returns The requested declaration, casted to the given return type.
1846
  template<typename T>
1847
83
  T *GetLocalDeclAs(ModuleFile &F, uint32_t LocalID) {
1848
83
    return cast_or_null<T>(GetLocalDecl(F, LocalID));
1849
83
  }
1850
1851
  /// Map a global declaration ID into the declaration ID used to
1852
  /// refer to this declaration within the given module fule.
1853
  ///
1854
  /// \returns the global ID of the given declaration as known in the given
1855
  /// module file.
1856
  serialization::DeclID
1857
  mapGlobalIDToModuleFileGlobalID(ModuleFile &M,
1858
                                  serialization::DeclID GlobalID);
1859
1860
  /// Reads a declaration ID from the given position in a record in the
1861
  /// given module.
1862
  ///
1863
  /// \returns The declaration ID read from the record, adjusted to a global ID.
1864
  serialization::DeclID ReadDeclID(ModuleFile &F, const RecordData &Record,
1865
                                   unsigned &Idx);
1866
1867
  /// Reads a declaration from the given position in a record in the
1868
  /// given module.
1869
63.3k
  Decl *ReadDecl(ModuleFile &F, const RecordData &R, unsigned &I) {
1870
63.3k
    return GetDecl(ReadDeclID(F, R, I));
1871
63.3k
  }
1872
1873
  /// Reads a declaration from the given position in a record in the
1874
  /// given module.
1875
  ///
1876
  /// \returns The declaration read from this location, casted to the given
1877
  /// result type.
1878
  template<typename T>
1879
909k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
909k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
909k
  }
clang::UnresolvedUsingTypenameDecl* clang::ASTReader::ReadDeclAs<clang::UnresolvedUsingTypenameDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
3
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
3
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
3
  }
clang::TypedefNameDecl* clang::ASTReader::ReadDeclAs<clang::TypedefNameDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
12.6k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
12.6k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
12.6k
  }
clang::RecordDecl* clang::ASTReader::ReadDeclAs<clang::RecordDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
71.4k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
71.4k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
71.4k
  }
clang::EnumDecl* clang::ASTReader::ReadDeclAs<clang::EnumDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
828
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
828
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
828
  }
clang::TagDecl* clang::ASTReader::ReadDeclAs<clang::TagDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
1.12k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
1.12k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
1.12k
  }
clang::ObjCInterfaceDecl* clang::ASTReader::ReadDeclAs<clang::ObjCInterfaceDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
602
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
602
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
602
  }
clang::ObjCTypeParamDecl* clang::ASTReader::ReadDeclAs<clang::ObjCTypeParamDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
40
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
40
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
40
  }
clang::ObjCProtocolDecl* clang::ASTReader::ReadDeclAs<clang::ObjCProtocolDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
56
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
56
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
56
  }
clang::CXXRecordDecl* clang::ASTReader::ReadDeclAs<clang::CXXRecordDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
2.31k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
2.31k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
2.31k
  }
clang::TemplateTypeParmDecl* clang::ASTReader::ReadDeclAs<clang::TemplateTypeParmDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
6.91k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
6.91k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
6.91k
  }
clang::FunctionDecl* clang::ASTReader::ReadDeclAs<clang::FunctionDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
7.28k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
7.28k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
7.28k
  }
clang::ParmVarDecl* clang::ASTReader::ReadDeclAs<clang::ParmVarDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
28.6k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
28.6k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
28.6k
  }
clang::TemplateDecl* clang::ASTReader::ReadDeclAs<clang::TemplateDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
9.84k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
9.84k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
9.84k
  }
clang::NamedDecl* clang::ASTReader::ReadDeclAs<clang::NamedDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
9.26k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
9.26k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
9.26k
  }
clang::TemplateTemplateParmDecl* clang::ASTReader::ReadDeclAs<clang::TemplateTemplateParmDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
8
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
8
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
8
  }
clang::ValueDecl* clang::ASTReader::ReadDeclAs<clang::ValueDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
151k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
151k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
151k
  }
clang::FieldDecl* clang::ASTReader::ReadDeclAs<clang::FieldDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
9.45k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
9.45k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
9.45k
  }
clang::IndirectFieldDecl* clang::ASTReader::ReadDeclAs<clang::IndirectFieldDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
2
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
2
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
2
  }
clang::NamespaceDecl* clang::ASTReader::ReadDeclAs<clang::NamespaceDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
342
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
342
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
342
  }
clang::NamespaceAliasDecl* clang::ASTReader::ReadDeclAs<clang::NamespaceAliasDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
9
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
9
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
9
  }
clang::CXXDestructorDecl* clang::ASTReader::ReadDeclAs<clang::CXXDestructorDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
1.10k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
1.10k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
1.10k
  }
clang::DeclContext* clang::ASTReader::ReadDeclAs<clang::DeclContext>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
457k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
457k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
457k
  }
clang::TypeAliasTemplateDecl* clang::ASTReader::ReadDeclAs<clang::TypeAliasTemplateDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
206
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
206
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
206
  }
clang::FunctionTemplateDecl* clang::ASTReader::ReadDeclAs<clang::FunctionTemplateDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
3.96k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
3.96k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
3.96k
  }
clang::ImplicitParamDecl* clang::ASTReader::ReadDeclAs<clang::ImplicitParamDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
65.2k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
65.2k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
65.2k
  }
clang::ObjCMethodDecl* clang::ASTReader::ReadDeclAs<clang::ObjCMethodDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
168
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
168
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
168
  }
clang::ObjCIvarDecl* clang::ASTReader::ReadDeclAs<clang::ObjCIvarDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
59
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
59
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
59
  }
clang::ObjCPropertyDecl* clang::ASTReader::ReadDeclAs<clang::ObjCPropertyDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
10
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
10
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
10
  }
clang::VarTemplateDecl* clang::ASTReader::ReadDeclAs<clang::VarTemplateDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
302
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
302
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
302
  }
clang::VarDecl* clang::ASTReader::ReadDeclAs<clang::VarDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
31.5k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
31.5k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
31.5k
  }
clang::BindingDecl* clang::ASTReader::ReadDeclAs<clang::BindingDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
4
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
4
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
4
  }
clang::UsingShadowDecl* clang::ASTReader::ReadDeclAs<clang::UsingShadowDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
647
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
647
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
647
  }
clang::ConstructorUsingShadowDecl* clang::ASTReader::ReadDeclAs<clang::ConstructorUsingShadowDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
131
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
131
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
131
  }
clang::ClassTemplateDecl* clang::ASTReader::ReadDeclAs<clang::ClassTemplateDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
7.67k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
7.67k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
7.67k
  }
clang::CXXMethodDecl* clang::ASTReader::ReadDeclAs<clang::CXXMethodDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
29
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
29
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
29
  }
clang::CXXConstructorDecl* clang::ASTReader::ReadDeclAs<clang::CXXConstructorDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
5.04k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
5.04k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
5.04k
  }
clang::RedeclarableTemplateDecl* clang::ASTReader::ReadDeclAs<clang::RedeclarableTemplateDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
3.86k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
3.86k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
3.86k
  }
clang::ClassTemplatePartialSpecializationDecl* clang::ASTReader::ReadDeclAs<clang::ClassTemplatePartialSpecializationDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
160
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
160
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
160
  }
clang::VarTemplatePartialSpecializationDecl* clang::ASTReader::ReadDeclAs<clang::VarTemplatePartialSpecializationDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
19
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
19
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
19
  }
clang::LabelDecl* clang::ASTReader::ReadDeclAs<clang::LabelDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
12
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
12
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
12
  }
clang::CapturedDecl* clang::ASTReader::ReadDeclAs<clang::CapturedDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
19.1k
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
19.1k
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
19.1k
  }
clang::BlockDecl* clang::ASTReader::ReadDeclAs<clang::BlockDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
18
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
18
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
18
  }
clang::NonTypeTemplateParmDecl* clang::ASTReader::ReadDeclAs<clang::NonTypeTemplateParmDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
346
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
346
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
346
  }
clang::MSPropertyDecl* clang::ASTReader::ReadDeclAs<clang::MSPropertyDecl>(clang::serialization::ModuleFile&, llvm::SmallVector<unsigned long long, 64u> const&, unsigned int&)
Line
Count
Source
1879
22
  T *ReadDeclAs(ModuleFile &F, const RecordData &R, unsigned &I) {
1880
22
    return cast_or_null<T>(GetDecl(ReadDeclID(F, R, I)));
1881
22
  }
1882
1883
  /// If any redeclarations of \p D have been imported since it was
1884
  /// last checked, this digs out those redeclarations and adds them to the
1885
  /// redeclaration chain for \p D.
1886
  void CompleteRedeclChain(const Decl *D) override;
1887
1888
  CXXBaseSpecifier *GetExternalCXXBaseSpecifiers(uint64_t Offset) override;
1889
1890
  /// Resolve the offset of a statement into a statement.
1891
  ///
1892
  /// This operation will read a new statement from the external
1893
  /// source each time it is called, and is meant to be used via a
1894
  /// LazyOffsetPtr (which is used by Decls for the body of functions, etc).
1895
  Stmt *GetExternalDeclStmt(uint64_t Offset) override;
1896
1897
  /// ReadBlockAbbrevs - Enter a subblock of the specified BlockID with the
1898
  /// specified cursor.  Read the abbreviations that are at the top of the block
1899
  /// and then leave the cursor pointing into the block.
1900
  static bool ReadBlockAbbrevs(llvm::BitstreamCursor &Cursor, unsigned BlockID);
1901
1902
  /// Finds all the visible declarations with a given name.
1903
  /// The current implementation of this method just loads the entire
1904
  /// lookup table as unmaterialized references.
1905
  bool FindExternalVisibleDeclsByName(const DeclContext *DC,
1906
                                      DeclarationName Name) override;
1907
1908
  /// Read all of the declarations lexically stored in a
1909
  /// declaration context.
1910
  ///
1911
  /// \param DC The declaration context whose declarations will be
1912
  /// read.
1913
  ///
1914
  /// \param IsKindWeWant A predicate indicating which declaration kinds
1915
  /// we are interested in.
1916
  ///
1917
  /// \param Decls Vector that will contain the declarations loaded
1918
  /// from the external source. The caller is responsible for merging
1919
  /// these declarations with any declarations already stored in the
1920
  /// declaration context.
1921
  void
1922
  FindExternalLexicalDecls(const DeclContext *DC,
1923
                           llvm::function_ref<bool(Decl::Kind)> IsKindWeWant,
1924
                           SmallVectorImpl<Decl *> &Decls) override;
1925
1926
  /// Get the decls that are contained in a file in the Offset/Length
1927
  /// range. \p Length can be 0 to indicate a point at \p Offset instead of
1928
  /// a range.
1929
  void FindFileRegionDecls(FileID File, unsigned Offset, unsigned Length,
1930
                           SmallVectorImpl<Decl *> &Decls) override;
1931
1932
  /// Notify ASTReader that we started deserialization of
1933
  /// a decl or type so until FinishedDeserializing is called there may be
1934
  /// decls that are initializing. Must be paired with FinishedDeserializing.
1935
  void StartedDeserializing() override;
1936
1937
  /// Notify ASTReader that we finished the deserialization of
1938
  /// a decl or type. Must be paired with StartedDeserializing.
1939
  void FinishedDeserializing() override;
1940
1941
  /// Function that will be invoked when we begin parsing a new
1942
  /// translation unit involving this external AST source.
1943
  ///
1944
  /// This function will provide all of the external definitions to
1945
  /// the ASTConsumer.
1946
  void StartTranslationUnit(ASTConsumer *Consumer) override;
1947
1948
  /// Print some statistics about AST usage.
1949
  void PrintStats() override;
1950
1951
  /// Dump information about the AST reader to standard error.
1952
  void dump();
1953
1954
  /// Return the amount of memory used by memory buffers, breaking down
1955
  /// by heap-backed versus mmap'ed memory.
1956
  void getMemoryBufferSizes(MemoryBufferSizes &sizes) const override;
1957
1958
  /// Initialize the semantic source with the Sema instance
1959
  /// being used to perform semantic analysis on the abstract syntax
1960
  /// tree.
1961
  void InitializeSema(Sema &S) override;
1962
1963
  /// Inform the semantic consumer that Sema is no longer available.
1964
5.17k
  void ForgetSema() override { SemaObj = nullptr; }
1965
1966
  /// Retrieve the IdentifierInfo for the named identifier.
1967
  ///
1968
  /// This routine builds a new IdentifierInfo for the given identifier. If any
1969
  /// declarations with this name are visible from translation unit scope, their
1970
  /// declarations will be deserialized and introduced into the declaration
1971
  /// chain of the identifier.
1972
  IdentifierInfo *get(StringRef Name) override;
1973
1974
  /// Retrieve an iterator into the set of all identifiers
1975
  /// in all loaded AST files.
1976
  IdentifierIterator *getIdentifiers() override;
1977
1978
  /// Load the contents of the global method pool for a given
1979
  /// selector.
1980
  void ReadMethodPool(Selector Sel) override;
1981
1982
  /// Load the contents of the global method pool for a given
1983
  /// selector if necessary.
1984
  void updateOutOfDateSelector(Selector Sel) override;
1985
1986
  /// Load the set of namespaces that are known to the external source,
1987
  /// which will be used during typo correction.
1988
  void ReadKnownNamespaces(
1989
                         SmallVectorImpl<NamespaceDecl *> &Namespaces) override;
1990
1991
  void ReadUndefinedButUsed(
1992
      llvm::MapVector<NamedDecl *, SourceLocation> &Undefined) override;
1993
1994
  void ReadMismatchingDeleteExpressions(llvm::MapVector<
1995
      FieldDecl *, llvm::SmallVector<std::pair<SourceLocation, bool>, 4>> &
1996
                                            Exprs) override;
1997
1998
  void ReadTentativeDefinitions(
1999
                            SmallVectorImpl<VarDecl *> &TentativeDefs) override;
2000
2001
  void ReadUnusedFileScopedDecls(
2002
                       SmallVectorImpl<const DeclaratorDecl *> &Decls) override;
2003
2004
  void ReadDelegatingConstructors(
2005
                         SmallVectorImpl<CXXConstructorDecl *> &Decls) override;
2006
2007
  void ReadExtVectorDecls(SmallVectorImpl<TypedefNameDecl *> &Decls) override;
2008
2009
  void ReadUnusedLocalTypedefNameCandidates(
2010
      llvm::SmallSetVector<const TypedefNameDecl *, 4> &Decls) override;
2011
2012
  void ReadReferencedSelectors(
2013
           SmallVectorImpl<std::pair<Selector, SourceLocation>> &Sels) override;
2014
2015
  void ReadWeakUndeclaredIdentifiers(
2016
           SmallVectorImpl<std::pair<IdentifierInfo *, WeakInfo>> &WI) override;
2017
2018
  void ReadUsedVTables(SmallVectorImpl<ExternalVTableUse> &VTables) override;
2019
2020
  void ReadPendingInstantiations(
2021
                  SmallVectorImpl<std::pair<ValueDecl *,
2022
                                            SourceLocation>> &Pending) override;
2023
2024
  void ReadLateParsedTemplates(
2025
      llvm::MapVector<const FunctionDecl *, std::unique_ptr<LateParsedTemplate>>
2026
          &LPTMap) override;
2027
2028
  /// Load a selector from disk, registering its ID if it exists.
2029
  void LoadSelector(Selector Sel);
2030
2031
  void SetIdentifierInfo(unsigned ID, IdentifierInfo *II);
2032
  void SetGloballyVisibleDecls(IdentifierInfo *II,
2033
                               const SmallVectorImpl<uint32_t> &DeclIDs,
2034
                               SmallVectorImpl<Decl *> *Decls = nullptr);
2035
2036
  /// Report a diagnostic.
2037
  DiagnosticBuilder Diag(unsigned DiagID) const;
2038
2039
  /// Report a diagnostic.
2040
  DiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID) const;
2041
2042
  IdentifierInfo *DecodeIdentifierInfo(serialization::IdentifierID ID);
2043
2044
  IdentifierInfo *GetIdentifierInfo(ModuleFile &M, const RecordData &Record,
2045
222k
                                    unsigned &Idx) {
2046
222k
    return DecodeIdentifierInfo(getGlobalIdentifierID(M, Record[Idx++]));
2047
222k
  }
2048
2049
65
  IdentifierInfo *GetIdentifier(serialization::IdentifierID ID) override {
2050
65
    // Note that we are loading an identifier.
2051
65
    Deserializing AnIdentifier(this);
2052
65
2053
65
    return DecodeIdentifierInfo(ID);
2054
65
  }
2055
2056
  IdentifierInfo *getLocalIdentifier(ModuleFile &M, unsigned LocalID);
2057
2058
  serialization::IdentifierID getGlobalIdentifierID(ModuleFile &M,
2059
                                                    unsigned LocalID);
2060
2061
  void resolvePendingMacro(IdentifierInfo *II, const PendingMacroInfo &PMInfo);
2062
2063
  /// Retrieve the macro with the given ID.
2064
  MacroInfo *getMacro(serialization::MacroID ID);
2065
2066
  /// Retrieve the global macro ID corresponding to the given local
2067
  /// ID within the given module file.
2068
  serialization::MacroID getGlobalMacroID(ModuleFile &M, unsigned LocalID);
2069
2070
  /// Read the source location entry with index ID.
2071
  bool ReadSLocEntry(int ID) override;
2072
2073
  /// Retrieve the module import location and module name for the
2074
  /// given source manager entry ID.
2075
  std::pair<SourceLocation, StringRef> getModuleImportLoc(int ID) override;
2076
2077
  /// Retrieve the global submodule ID given a module and its local ID
2078
  /// number.
2079
  serialization::SubmoduleID
2080
  getGlobalSubmoduleID(ModuleFile &M, unsigned LocalID);
2081
2082
  /// Retrieve the submodule that corresponds to a global submodule ID.
2083
  ///
2084
  Module *getSubmodule(serialization::SubmoduleID GlobalID);
2085
2086
  /// Retrieve the module that corresponds to the given module ID.
2087
  ///
2088
  /// Note: overrides method in ExternalASTSource
2089
  Module *getModule(unsigned ID) override;
2090
2091
  bool DeclIsFromPCHWithObjectFile(const Decl *D) override;
2092
2093
  /// Retrieve the module file with a given local ID within the specified
2094
  /// ModuleFile.
2095
  ModuleFile *getLocalModuleFile(ModuleFile &M, unsigned ID);
2096
2097
  /// Get an ID for the given module file.
2098
  unsigned getModuleFileID(ModuleFile *M);
2099
2100
  /// Return a descriptor for the corresponding module.
2101
  llvm::Optional<ASTSourceDescriptor> getSourceDescriptor(unsigned ID) override;
2102
2103
  ExtKind hasExternalDefinitions(const Decl *D) override;
2104
2105
  /// Retrieve a selector from the given module with its local ID
2106
  /// number.
2107
  Selector getLocalSelector(ModuleFile &M, unsigned LocalID);
2108
2109
  Selector DecodeSelector(serialization::SelectorID Idx);
2110
2111
  Selector GetExternalSelector(serialization::SelectorID ID) override;
2112
  uint32_t GetNumExternalSelectors() override;
2113
2114
452
  Selector ReadSelector(ModuleFile &M, const RecordData &Record, unsigned &Idx) {
2115
452
    return getLocalSelector(M, Record[Idx++]);
2116
452
  }
2117
2118
  /// Retrieve the global selector ID that corresponds to this
2119
  /// the local selector ID in a given module.
2120
  serialization::SelectorID getGlobalSelectorID(ModuleFile &F,
2121
                                                unsigned LocalID) const;
2122
2123
  /// Read a declaration name.
2124
  DeclarationName ReadDeclarationName(ModuleFile &F,
2125
                                      const RecordData &Record, unsigned &Idx);
2126
  void ReadDeclarationNameLoc(ModuleFile &F,
2127
                              DeclarationNameLoc &DNLoc, DeclarationName Name,
2128
                              const RecordData &Record, unsigned &Idx);
2129
  void ReadDeclarationNameInfo(ModuleFile &F, DeclarationNameInfo &NameInfo,
2130
                               const RecordData &Record, unsigned &Idx);
2131
2132
  void ReadQualifierInfo(ModuleFile &F, QualifierInfo &Info,
2133
                         const RecordData &Record, unsigned &Idx);
2134
2135
  NestedNameSpecifier *ReadNestedNameSpecifier(ModuleFile &F,
2136
                                               const RecordData &Record,
2137
                                               unsigned &Idx);
2138
2139
  NestedNameSpecifierLoc ReadNestedNameSpecifierLoc(ModuleFile &F,
2140
                                                    const RecordData &Record,
2141
                                                    unsigned &Idx);
2142
2143
  /// Read a template name.
2144
  TemplateName ReadTemplateName(ModuleFile &F, const RecordData &Record,
2145
                                unsigned &Idx);
2146
2147
  /// Read a template argument.
2148
  TemplateArgument ReadTemplateArgument(ModuleFile &F, const RecordData &Record,
2149
                                        unsigned &Idx,
2150
                                        bool Canonicalize = false);
2151
2152
  /// Read a template parameter list.
2153
  TemplateParameterList *ReadTemplateParameterList(ModuleFile &F,
2154
                                                   const RecordData &Record,
2155
                                                   unsigned &Idx);
2156
2157
  /// Read a template argument array.
2158
  void ReadTemplateArgumentList(SmallVectorImpl<TemplateArgument> &TemplArgs,
2159
                                ModuleFile &F, const RecordData &Record,
2160
                                unsigned &Idx, bool Canonicalize = false);
2161
2162
  /// Read a UnresolvedSet structure.
2163
  void ReadUnresolvedSet(ModuleFile &F, LazyASTUnresolvedSet &Set,
2164
                         const RecordData &Record, unsigned &Idx);
2165
2166
  /// Read a C++ base specifier.
2167
  CXXBaseSpecifier ReadCXXBaseSpecifier(ModuleFile &F,
2168
                                        const RecordData &Record,unsigned &Idx);
2169
2170
  /// Read a CXXCtorInitializer array.
2171
  CXXCtorInitializer **
2172
  ReadCXXCtorInitializers(ModuleFile &F, const RecordData &Record,
2173
                          unsigned &Idx);
2174
2175
  /// Read the contents of a CXXCtorInitializer array.
2176
  CXXCtorInitializer **GetExternalCXXCtorInitializers(uint64_t Offset) override;
2177
2178
  /// Read a source location from raw form and return it in its
2179
  /// originating module file's source location space.
2180
1.55M
  SourceLocation ReadUntranslatedSourceLocation(uint32_t Raw) const {
2181
1.55M
    return SourceLocation::getFromRawEncoding((Raw >> 1) | (Raw << 31));
2182
1.55M
  }
2183
2184
  /// Read a source location from raw form.
2185
1.55M
  SourceLocation ReadSourceLocation(ModuleFile &ModuleFile, uint32_t Raw) const {
2186
1.55M
    SourceLocation Loc = ReadUntranslatedSourceLocation(Raw);
2187
1.55M
    return TranslateSourceLocation(ModuleFile, Loc);
2188
1.55M
  }
2189
2190
  /// Translate a source location from another module file's source
2191
  /// location space into ours.
2192
  SourceLocation TranslateSourceLocation(ModuleFile &ModuleFile,
2193
1.92M
                                         SourceLocation Loc) const {
2194
1.92M
    if (!ModuleFile.ModuleOffsetMap.empty())
2195
0
      ReadModuleOffsetMap(ModuleFile);
2196
1.92M
    assert(ModuleFile.SLocRemap.find(Loc.getOffset()) !=
2197
1.92M
               ModuleFile.SLocRemap.end() &&
2198
1.92M
           "Cannot find offset to remap.");
2199
1.92M
    int Remap = ModuleFile.SLocRemap.find(Loc.getOffset())->second;
2200
1.92M
    return Loc.getLocWithOffset(Remap);
2201
1.92M
  }
2202
2203
  /// Read a source location.
2204
  SourceLocation ReadSourceLocation(ModuleFile &ModuleFile,
2205
                                    const RecordDataImpl &Record,
2206
1.52M
                                    unsigned &Idx) {
2207
1.52M
    return ReadSourceLocation(ModuleFile, Record[Idx++]);
2208
1.52M
  }
2209
2210
  /// Read a source range.
2211
  SourceRange ReadSourceRange(ModuleFile &F,
2212
                              const RecordData &Record, unsigned &Idx);
2213
2214
  /// Read an integral value
2215
  llvm::APInt ReadAPInt(const RecordData &Record, unsigned &Idx);
2216
2217
  /// Read a signed integral value
2218
  llvm::APSInt ReadAPSInt(const RecordData &Record, unsigned &Idx);
2219
2220
  /// Read a floating-point value
2221
  llvm::APFloat ReadAPFloat(const RecordData &Record,
2222
                            const llvm::fltSemantics &Sem, unsigned &Idx);
2223
2224
  /// Read an APValue
2225
  APValue ReadAPValue(const RecordData &Record, unsigned &Idx);
2226
2227
  // Read a string
2228
  static std::string ReadString(const RecordData &Record, unsigned &Idx);
2229
2230
  // Skip a string
2231
5
  static void SkipString(const RecordData &Record, unsigned &Idx) {
2232
5
    Idx += Record[Idx] + 1;
2233
5
  }
2234
2235
  // Read a path
2236
  std::string ReadPath(ModuleFile &F, const RecordData &Record, unsigned &Idx);
2237
2238
  // Read a path
2239
  std::string ReadPath(StringRef BaseDirectory, const RecordData &Record,
2240
                       unsigned &Idx);
2241
2242
  // Skip a path
2243
5
  static void SkipPath(const RecordData &Record, unsigned &Idx) {
2244
5
    SkipString(Record, Idx);
2245
5
  }
2246
2247
  /// Read a version tuple.
2248
  static VersionTuple ReadVersionTuple(const RecordData &Record, unsigned &Idx);
2249
2250
  CXXTemporary *ReadCXXTemporary(ModuleFile &F, const RecordData &Record,
2251
                                 unsigned &Idx);
2252
2253
  /// Reads one attribute from the current stream position.
2254
  Attr *ReadAttr(ModuleFile &M, const RecordData &Record, unsigned &Idx);
2255
2256
  /// Reads attributes from the current stream position.
2257
  void ReadAttributes(ASTRecordReader &Record, AttrVec &Attrs);
2258
2259
  /// Reads a statement.
2260
  Stmt *ReadStmt(ModuleFile &F);
2261
2262
  /// Reads an expression.
2263
  Expr *ReadExpr(ModuleFile &F);
2264
2265
  /// Reads a sub-statement operand during statement reading.
2266
679k
  Stmt *ReadSubStmt() {
2267
679k
    assert(ReadingKind == Read_Stmt &&
2268
679k
           "Should be called only during statement reading!");
2269
679k
    // Subexpressions are stored from last to first, so the next Stmt we need
2270
679k
    // is at the back of the stack.
2271
679k
    assert(!StmtStack.empty() && "Read too many sub-statements!");
2272
679k
    return StmtStack.pop_back_val();
2273
679k
  }
2274
2275
  /// Reads a sub-expression operand during statement reading.
2276
  Expr *ReadSubExpr();
2277
2278
  /// Reads a token out of a record.
2279
  Token ReadToken(ModuleFile &M, const RecordDataImpl &Record, unsigned &Idx);
2280
2281
  /// Reads the macro record located at the given offset.
2282
  MacroInfo *ReadMacroRecord(ModuleFile &F, uint64_t Offset);
2283
2284
  /// Determine the global preprocessed entity ID that corresponds to
2285
  /// the given local ID within the given module.
2286
  serialization::PreprocessedEntityID
2287
  getGlobalPreprocessedEntityID(ModuleFile &M, unsigned LocalID) const;
2288
2289
  /// Add a macro to deserialize its macro directive history.
2290
  ///
2291
  /// \param II The name of the macro.
2292
  /// \param M The module file.
2293
  /// \param MacroDirectivesOffset Offset of the serialized macro directive
2294
  /// history.
2295
  void addPendingMacro(IdentifierInfo *II, ModuleFile *M,
2296
                       uint64_t MacroDirectivesOffset);
2297
2298
  /// Read the set of macros defined by this external macro source.
2299
  void ReadDefinedMacros() override;
2300
2301
  /// Update an out-of-date identifier.
2302
  void updateOutOfDateIdentifier(IdentifierInfo &II) override;
2303
2304
  /// Note that this identifier is up-to-date.
2305
  void markIdentifierUpToDate(IdentifierInfo *II);
2306
2307
  /// Load all external visible decls in the given DeclContext.
2308
  void completeVisibleDeclsMap(const DeclContext *DC) override;
2309
2310
  /// Retrieve the AST context that this AST reader supplements.
2311
4.97M
  ASTContext &getContext() {
2312
4.97M
    assert(ContextObj && "requested AST context when not loading AST");
2313
4.97M
    return *ContextObj;
2314
4.97M
  }
2315
2316
  // Contains the IDs for declarations that were requested before we have
2317
  // access to a Sema object.
2318
  SmallVector<uint64_t, 16> PreloadedDeclIDs;
2319
2320
  /// Retrieve the semantic analysis object used to analyze the
2321
  /// translation unit in which the precompiled header is being
2322
  /// imported.
2323
140
  Sema *getSema() { return SemaObj; }
2324
2325
  /// Get the identifier resolver used for name lookup / updates
2326
  /// in the translation unit scope. We have one of these even if we don't
2327
  /// have a Sema object.
2328
  IdentifierResolver &getIdResolver();
2329
2330
  /// Retrieve the identifier table associated with the
2331
  /// preprocessor.
2332
  IdentifierTable &getIdentifierTable();
2333
2334
  /// Record that the given ID maps to the given switch-case
2335
  /// statement.
2336
  void RecordSwitchCaseID(SwitchCase *SC, unsigned ID);
2337
2338
  /// Retrieve the switch-case statement with the given ID.
2339
  SwitchCase *getSwitchCaseWithID(unsigned ID);
2340
2341
  void ClearSwitchCaseIDs();
2342
2343
  /// Cursors for comments blocks.
2344
  SmallVector<std::pair<llvm::BitstreamCursor,
2345
                        serialization::ModuleFile *>, 8> CommentsCursors;
2346
2347
  /// Loads comments ranges.
2348
  void ReadComments() override;
2349
2350
  /// Visit all the input files of the given module file.
2351
  void visitInputFiles(serialization::ModuleFile &MF,
2352
                       bool IncludeSystem, bool Complain,
2353
          llvm::function_ref<void(const serialization::InputFile &IF,
2354
                                  bool isSystem)> Visitor);
2355
2356
  /// Visit all the top-level module maps loaded when building the given module
2357
  /// file.
2358
  void visitTopLevelModuleMaps(serialization::ModuleFile &MF,
2359
                               llvm::function_ref<
2360
                                   void(const FileEntry *)> Visitor);
2361
2362
212k
  bool isProcessingUpdateRecords() { return ProcessingUpdateRecords; }
2363
};
2364
2365
/// An object for streaming information from a record.
2366
class ASTRecordReader {
2367
  using ModuleFile = serialization::ModuleFile;
2368
2369
  ASTReader *Reader;
2370
  ModuleFile *F;
2371
  unsigned Idx = 0;
2372
  ASTReader::RecordData Record;
2373
2374
  using RecordData = ASTReader::RecordData;
2375
  using RecordDataImpl = ASTReader::RecordDataImpl;
2376
2377
public:
2378
  /// Construct an ASTRecordReader that uses the default encoding scheme.
2379
336k
  ASTRecordReader(ASTReader &Reader, ModuleFile &F) : Reader(&Reader), F(&F) {}
2380
2381
  /// Reads a record with id AbbrevID from Cursor, resetting the
2382
  /// internal state.
2383
  Expected<unsigned> readRecord(llvm::BitstreamCursor &Cursor,
2384
                                unsigned AbbrevID);
2385
2386
  /// Is this a module file for a module (rather than a PCH or similar).
2387
28
  bool isModule() const { return F->isModule(); }
2388
2389
  /// Retrieve the AST context that this AST reader supplements.
2390
92.5k
  ASTContext &getContext() { return Reader->getContext(); }
2391
2392
  /// The current position in this record.
2393
276k
  unsigned getIdx() const { return Idx; }
2394
2395
  /// The length of this record.
2396
276k
  size_t size() const { return Record.size(); }
2397
2398
  /// An arbitrary index in this record.
2399
763k
  const uint64_t &operator[](size_t N) { return Record[N]; }
2400
2401
  /// The last element in this record.
2402
304
  const uint64_t &back() const { return Record.back(); }
2403
2404
  /// Returns the current value in this record, and advances to the
2405
  /// next value.
2406
13.6M
  const uint64_t &readInt() { return Record[Idx++]; }
2407
2408
  /// Returns the current value in this record, without advancing.
2409
32
  const uint64_t &peekInt() { return Record[Idx]; }
2410
2411
  /// Skips the specified number of values.
2412
31.1k
  void skipInts(unsigned N) { Idx += N; }
2413
2414
  /// Retrieve the global submodule ID its local ID number.
2415
  serialization::SubmoduleID
2416
253k
  getGlobalSubmoduleID(unsigned LocalID) {
2417
253k
    return Reader->getGlobalSubmoduleID(*F, LocalID);
2418
253k
  }
2419
2420
  /// Retrieve the submodule that corresponds to a global submodule ID.
2421
152
  Module *getSubmodule(serialization::SubmoduleID GlobalID) {
2422
152
    return Reader->getSubmodule(GlobalID);
2423
152
  }
2424
2425
  /// Read the record that describes the lexical contents of a DC.
2426
31
  bool readLexicalDeclContextStorage(uint64_t Offset, DeclContext *DC) {
2427
31
    return Reader->ReadLexicalDeclContextStorage(*F, F->DeclsCursor, Offset,
2428
31
                                                 DC);
2429
31
  }
2430
2431
  /// Read the record that describes the visible contents of a DC.
2432
  bool readVisibleDeclContextStorage(uint64_t Offset,
2433
0
                                     serialization::DeclID ID) {
2434
0
    return Reader->ReadVisibleDeclContextStorage(*F, F->DeclsCursor, Offset,
2435
0
                                                 ID);
2436
0
  }
2437
2438
7.86k
  ExplicitSpecifier readExplicitSpec() {
2439
7.86k
    uint64_t Kind = readInt();
2440
7.86k
    bool HasExpr = Kind & 0x1;
2441
7.86k
    Kind = Kind >> 1;
2442
7.86k
    return ExplicitSpecifier(HasExpr ? 
readExpr()12
:
nullptr7.84k
,
2443
7.86k
                             static_cast<ExplicitSpecKind>(Kind));
2444
7.86k
  }
2445
2446
  void readExceptionSpec(SmallVectorImpl<QualType> &ExceptionStorage,
2447
28
                         FunctionProtoType::ExceptionSpecInfo &ESI) {
2448
28
    return Reader->readExceptionSpec(*F, ExceptionStorage, ESI, Record, Idx);
2449
28
  }
2450
2451
  /// Get the global offset corresponding to a local offset.
2452
2.51k
  uint64_t getGlobalBitOffset(uint32_t LocalOffset) {
2453
2.51k
    return Reader->getGlobalBitOffset(*F, LocalOffset);
2454
2.51k
  }
2455
2456
  /// Reads a statement.
2457
13
  Stmt *readStmt() { return Reader->ReadStmt(*F); }
2458
2459
  /// Reads an expression.
2460
56.4k
  Expr *readExpr() { return Reader->ReadExpr(*F); }
2461
2462
  /// Reads a sub-statement operand during statement reading.
2463
84.6k
  Stmt *readSubStmt() { return Reader->ReadSubStmt(); }
2464
2465
  /// Reads a sub-expression operand during statement reading.
2466
587k
  Expr *readSubExpr() { return Reader->ReadSubExpr(); }
2467
2468
  /// Reads a declaration with the given local ID in the given module.
2469
  ///
2470
  /// \returns The requested declaration, casted to the given return type.
2471
  template<typename T>
2472
  T *GetLocalDeclAs(uint32_t LocalID) {
2473
    return cast_or_null<T>(Reader->GetLocalDecl(*F, LocalID));
2474
  }
2475
2476
  /// Reads a TemplateArgumentLocInfo appropriate for the
2477
  /// given TemplateArgument kind, advancing Idx.
2478
  TemplateArgumentLocInfo
2479
0
  getTemplateArgumentLocInfo(TemplateArgument::ArgKind Kind) {
2480
0
    return Reader->GetTemplateArgumentLocInfo(*F, Kind, Record, Idx);
2481
0
  }
2482
2483
  /// Reads a TemplateArgumentLoc, advancing Idx.
2484
  TemplateArgumentLoc
2485
1.29k
  readTemplateArgumentLoc() {
2486
1.29k
    return Reader->ReadTemplateArgumentLoc(*F, Record, Idx);
2487
1.29k
  }
2488
2489
  const ASTTemplateArgumentListInfo*
2490
180
  readASTTemplateArgumentListInfo() {
2491
180
    return Reader->ReadASTTemplateArgumentListInfo(*F, Record, Idx);
2492
180
  }
2493
2494
  /// Reads a declarator info from the given record, advancing Idx.
2495
16.1k
  TypeSourceInfo *getTypeSourceInfo() {
2496
16.1k
    return Reader->GetTypeSourceInfo(*F, Record, Idx);
2497
16.1k
  }
2498
2499
  /// Reads the location information for a type.
2500
101k
  void readTypeLoc(TypeLoc TL) {
2501
101k
    return Reader->ReadTypeLoc(*F, Record, Idx, TL);
2502
101k
  }
2503
2504
  /// Map a local type ID within a given AST file to a global type ID.
2505
70.4k
  serialization::TypeID getGlobalTypeID(unsigned LocalID) const {
2506
70.4k
    return Reader->getGlobalTypeID(*F, LocalID);
2507
70.4k
  }
2508
2509
  /// Read a type from the current position in the record.
2510
835k
  QualType readType() {
2511
835k
    return Reader->readType(*F, Record, Idx);
2512
835k
  }
2513
2514
  /// Reads a declaration ID from the given position in this record.
2515
  ///
2516
  /// \returns The declaration ID read from the record, adjusted to a global ID.
2517
318k
  serialization::DeclID readDeclID() {
2518
318k
    return Reader->ReadDeclID(*F, Record, Idx);
2519
318k
  }
2520
2521
  /// Reads a declaration from the given position in a record in the
2522
  /// given module, advancing Idx.
2523
63.3k
  Decl *readDecl() {
2524
63.3k
    return Reader->ReadDecl(*F, Record, Idx);
2525
63.3k
  }
2526
2527
  /// Reads a declaration from the given position in the record,
2528
  /// advancing Idx.
2529
  ///
2530
  /// \returns The declaration read from this location, casted to the given
2531
  /// result type.
2532
  template<typename T>
2533
799k
  T *readDeclAs() {
2534
799k
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
799k
  }
clang::ValueDecl* clang::ASTRecordReader::readDeclAs<clang::ValueDecl>()
Line
Count
Source
2533
151k
  T *readDeclAs() {
2534
151k
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
151k
  }
clang::DeclContext* clang::ASTRecordReader::readDeclAs<clang::DeclContext>()
Line
Count
Source
2533
457k
  T *readDeclAs() {
2534
457k
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
457k
  }
clang::TypeAliasTemplateDecl* clang::ASTRecordReader::readDeclAs<clang::TypeAliasTemplateDecl>()
Line
Count
Source
2533
206
  T *readDeclAs() {
2534
206
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
206
  }
clang::EnumDecl* clang::ASTRecordReader::readDeclAs<clang::EnumDecl>()
Line
Count
Source
2533
366
  T *readDeclAs() {
2534
366
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
366
  }
clang::FunctionTemplateDecl* clang::ASTRecordReader::readDeclAs<clang::FunctionTemplateDecl>()
Line
Count
Source
2533
3.96k
  T *readDeclAs() {
2534
3.96k
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
3.96k
  }
clang::FunctionDecl* clang::ASTRecordReader::readDeclAs<clang::FunctionDecl>()
Line
Count
Source
2533
4.20k
  T *readDeclAs() {
2534
4.20k
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
4.20k
  }
clang::NamedDecl* clang::ASTRecordReader::readDeclAs<clang::NamedDecl>()
Line
Count
Source
2533
2.59k
  T *readDeclAs() {
2534
2.59k
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
2.59k
  }
clang::ParmVarDecl* clang::ASTRecordReader::readDeclAs<clang::ParmVarDecl>()
Line
Count
Source
2533
16.3k
  T *readDeclAs() {
2534
16.3k
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
16.3k
  }
clang::ImplicitParamDecl* clang::ASTRecordReader::readDeclAs<clang::ImplicitParamDecl>()
Line
Count
Source
2533
65.2k
  T *readDeclAs() {
2534
65.2k
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
65.2k
  }
clang::ObjCMethodDecl* clang::ASTRecordReader::readDeclAs<clang::ObjCMethodDecl>()
Line
Count
Source
2533
168
  T *readDeclAs() {
2534
168
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
168
  }
clang::ObjCTypeParamDecl* clang::ASTRecordReader::readDeclAs<clang::ObjCTypeParamDecl>()
Line
Count
Source
2533
17
  T *readDeclAs() {
2534
17
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
17
  }
clang::ObjCProtocolDecl* clang::ASTRecordReader::readDeclAs<clang::ObjCProtocolDecl>()
Line
Count
Source
2533
33
  T *readDeclAs() {
2534
33
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
33
  }
clang::ObjCInterfaceDecl* clang::ASTRecordReader::readDeclAs<clang::ObjCInterfaceDecl>()
Line
Count
Source
2533
185
  T *readDeclAs() {
2534
185
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
185
  }
clang::ObjCIvarDecl* clang::ASTRecordReader::readDeclAs<clang::ObjCIvarDecl>()
Line
Count
Source
2533
59
  T *readDeclAs() {
2534
59
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
59
  }
clang::ObjCPropertyDecl* clang::ASTRecordReader::readDeclAs<clang::ObjCPropertyDecl>()
Line
Count
Source
2533
10
  T *readDeclAs() {
2534
10
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
10
  }
clang::FieldDecl* clang::ASTRecordReader::readDeclAs<clang::FieldDecl>()
Line
Count
Source
2533
8.10k
  T *readDeclAs() {
2534
8.10k
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
8.10k
  }
clang::VarTemplateDecl* clang::ASTRecordReader::readDeclAs<clang::VarTemplateDecl>()
Line
Count
Source
2533
302
  T *readDeclAs() {
2534
302
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
302
  }
clang::VarDecl* clang::ASTRecordReader::readDeclAs<clang::VarDecl>()
Line
Count
Source
2533
31.5k
  T *readDeclAs() {
2534
31.5k
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
31.5k
  }
clang::BindingDecl* clang::ASTRecordReader::readDeclAs<clang::BindingDecl>()
Line
Count
Source
2533
4
  T *readDeclAs() {
2534
4
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
4
  }
clang::UsingShadowDecl* clang::ASTRecordReader::readDeclAs<clang::UsingShadowDecl>()
Line
Count
Source
2533
647
  T *readDeclAs() {
2534
647
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
647
  }
clang::ConstructorUsingShadowDecl* clang::ASTRecordReader::readDeclAs<clang::ConstructorUsingShadowDecl>()
Line
Count
Source
2533
131
  T *readDeclAs() {
2534
131
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
131
  }
clang::ClassTemplateDecl* clang::ASTRecordReader::readDeclAs<clang::ClassTemplateDecl>()
Line
Count
Source
2533
7.67k
  T *readDeclAs() {
2534
7.67k
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
7.67k
  }
clang::CXXRecordDecl* clang::ASTRecordReader::readDeclAs<clang::CXXRecordDecl>()
Line
Count
Source
2533
976
  T *readDeclAs() {
2534
976
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
976
  }
clang::CXXMethodDecl* clang::ASTRecordReader::readDeclAs<clang::CXXMethodDecl>()
Line
Count
Source
2533
29
  T *readDeclAs() {
2534
29
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
29
  }
clang::CXXConstructorDecl* clang::ASTRecordReader::readDeclAs<clang::CXXConstructorDecl>()
Line
Count
Source
2533
5.04k
  T *readDeclAs() {
2534
5.04k
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
5.04k
  }
clang::RedeclarableTemplateDecl* clang::ASTRecordReader::readDeclAs<clang::RedeclarableTemplateDecl>()
Line
Count
Source
2533
3.86k
  T *readDeclAs() {
2534
3.86k
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
3.86k
  }
clang::ClassTemplatePartialSpecializationDecl* clang::ASTRecordReader::readDeclAs<clang::ClassTemplatePartialSpecializationDecl>()
Line
Count
Source
2533
160
  T *readDeclAs() {
2534
160
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
160
  }
clang::VarTemplatePartialSpecializationDecl* clang::ASTRecordReader::readDeclAs<clang::VarTemplatePartialSpecializationDecl>()
Line
Count
Source
2533
19
  T *readDeclAs() {
2534
19
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
19
  }
clang::NamespaceDecl* clang::ASTRecordReader::readDeclAs<clang::NamespaceDecl>()
Line
Count
Source
2533
18
  T *readDeclAs() {
2534
18
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
18
  }
clang::LabelDecl* clang::ASTRecordReader::readDeclAs<clang::LabelDecl>()
Line
Count
Source
2533
12
  T *readDeclAs() {
2534
12
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
12
  }
clang::CapturedDecl* clang::ASTRecordReader::readDeclAs<clang::CapturedDecl>()
Line
Count
Source
2533
19.1k
  T *readDeclAs() {
2534
19.1k
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
19.1k
  }
clang::RecordDecl* clang::ASTRecordReader::readDeclAs<clang::RecordDecl>()
Line
Count
Source
2533
19.1k
  T *readDeclAs() {
2534
19.1k
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
19.1k
  }
clang::BlockDecl* clang::ASTRecordReader::readDeclAs<clang::BlockDecl>()
Line
Count
Source
2533
18
  T *readDeclAs() {
2534
18
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
18
  }
clang::NonTypeTemplateParmDecl* clang::ASTRecordReader::readDeclAs<clang::NonTypeTemplateParmDecl>()
Line
Count
Source
2533
346
  T *readDeclAs() {
2534
346
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
346
  }
clang::MSPropertyDecl* clang::ASTRecordReader::readDeclAs<clang::MSPropertyDecl>()
Line
Count
Source
2533
22
  T *readDeclAs() {
2534
22
    return Reader->ReadDeclAs<T>(*F, Record, Idx);
2535
22
  }
2536
2537
215
  IdentifierInfo *getIdentifierInfo() {
2538
215
    return Reader->GetIdentifierInfo(*F, Record, Idx);
2539
215
  }
2540
2541
  /// Read a selector from the Record, advancing Idx.
2542
3
  Selector readSelector() {
2543
3
    return Reader->ReadSelector(*F, Record, Idx);
2544
3
  }
2545
2546
  /// Read a declaration name, advancing Idx.
2547
230k
  DeclarationName readDeclarationName() {
2548
230k
    return Reader->ReadDeclarationName(*F, Record, Idx);
2549
230k
  }
2550
168k
  void readDeclarationNameLoc(DeclarationNameLoc &DNLoc, DeclarationName Name) {
2551
168k
    return Reader->ReadDeclarationNameLoc(*F, DNLoc, Name, Record, Idx);
2552
168k
  }
2553
4.46k
  void readDeclarationNameInfo(DeclarationNameInfo &NameInfo) {
2554
4.46k
    return Reader->ReadDeclarationNameInfo(*F, NameInfo, Record, Idx);
2555
4.46k
  }
2556
2557
681
  void readQualifierInfo(QualifierInfo &Info) {
2558
681
    return Reader->ReadQualifierInfo(*F, Info, Record, Idx);
2559
681
  }
2560
2561
0
  NestedNameSpecifier *readNestedNameSpecifier() {
2562
0
    return Reader->ReadNestedNameSpecifier(*F, Record, Idx);
2563
0
  }
2564
2565
5.17k
  NestedNameSpecifierLoc readNestedNameSpecifierLoc() {
2566
5.17k
    return Reader->ReadNestedNameSpecifierLoc(*F, Record, Idx);
2567
5.17k
  }
2568
2569
  /// Read a template name, advancing Idx.
2570
0
  TemplateName readTemplateName() {
2571
0
    return Reader->ReadTemplateName(*F, Record, Idx);
2572
0
  }
2573
2574
  /// Read a template argument, advancing Idx.
2575
0
  TemplateArgument readTemplateArgument(bool Canonicalize = false) {
2576
0
    return Reader->ReadTemplateArgument(*F, Record, Idx, Canonicalize);
2577
0
  }
2578
2579
  /// Read a template parameter list, advancing Idx.
2580
5.29k
  TemplateParameterList *readTemplateParameterList() {
2581
5.29k
    return Reader->ReadTemplateParameterList(*F, Record, Idx);
2582
5.29k
  }
2583
2584
  /// Read a template argument array, advancing Idx.
2585
  void readTemplateArgumentList(SmallVectorImpl<TemplateArgument> &TemplArgs,
2586
5.43k
                                bool Canonicalize = false) {
2587
5.43k
    return Reader->ReadTemplateArgumentList(TemplArgs, *F, Record, Idx,
2588
5.43k
                                            Canonicalize);
2589
5.43k
  }
2590
2591
  /// Read a UnresolvedSet structure, advancing Idx.
2592
51.5k
  void readUnresolvedSet(LazyASTUnresolvedSet &Set) {
2593
51.5k
    return Reader->ReadUnresolvedSet(*F, Set, Record, Idx);
2594
51.5k
  }
2595
2596
  /// Read a C++ base specifier, advancing Idx.
2597
586
  CXXBaseSpecifier readCXXBaseSpecifier() {
2598
586
    return Reader->ReadCXXBaseSpecifier(*F, Record, Idx);
2599
586
  }
2600
2601
  /// Read a CXXCtorInitializer array, advancing Idx.
2602
0
  CXXCtorInitializer **readCXXCtorInitializers() {
2603
0
    return Reader->ReadCXXCtorInitializers(*F, Record, Idx);
2604
0
  }
2605
2606
1.10k
  CXXTemporary *readCXXTemporary() {
2607
1.10k
    return Reader->ReadCXXTemporary(*F, Record, Idx);
2608
1.10k
  }
2609
2610
  /// Read a source location, advancing Idx.
2611
850k
  SourceLocation readSourceLocation() {
2612
850k
    return Reader->ReadSourceLocation(*F, Record, Idx);
2613
850k
  }
2614
2615
  /// Read a source range, advancing Idx.
2616
42.0k
  SourceRange readSourceRange() {
2617
42.0k
    return Reader->ReadSourceRange(*F, Record, Idx);
2618
42.0k
  }
2619
2620
0
  APValue readAPValue() { return Reader->ReadAPValue(Record, Idx); }
2621
2622
  /// Read an integral value, advancing Idx.
2623
69.9k
  llvm::APInt readAPInt() {
2624
69.9k
    return Reader->ReadAPInt(Record, Idx);
2625
69.9k
  }
2626
2627
  /// Read a signed integral value, advancing Idx.
2628
445
  llvm::APSInt readAPSInt() {
2629
445
    return Reader->ReadAPSInt(Record, Idx);
2630
445
  }
2631
2632
  /// Read a floating-point value, advancing Idx.
2633
940
  llvm::APFloat readAPFloat(const llvm::fltSemantics &Sem) {
2634
940
    return Reader->ReadAPFloat(Record, Sem,Idx);
2635
940
  }
2636
2637
  /// Read a string, advancing Idx.
2638
7
  std::string readString() {
2639
7
    return Reader->ReadString(Record, Idx);
2640
7
  }
2641
2642
  /// Read a path, advancing Idx.
2643
0
  std::string readPath() {
2644
0
    return Reader->ReadPath(*F, Record, Idx);
2645
0
  }
2646
2647
  /// Read a version tuple, advancing Idx.
2648
0
  VersionTuple readVersionTuple() {
2649
0
    return ASTReader::ReadVersionTuple(Record, Idx);
2650
0
  }
2651
2652
  /// Reads one attribute from the current stream position, advancing Idx.
2653
42.4k
  Attr *readAttr() {
2654
42.4k
    return Reader->ReadAttr(*F, Record, Idx);
2655
42.4k
  }
2656
2657
  /// Reads attributes from the current stream position, advancing Idx.
2658
42.1k
  void readAttributes(AttrVec &Attrs) {
2659
42.1k
    return Reader->ReadAttributes(*this, Attrs);
2660
42.1k
  }
2661
2662
  /// Reads a token out of a record, advancing Idx.
2663
0
  Token readToken() {
2664
0
    return Reader->ReadToken(*F, Record, Idx);
2665
0
  }
2666
2667
27
  void recordSwitchCaseID(SwitchCase *SC, unsigned ID) {
2668
27
    Reader->RecordSwitchCaseID(SC, ID);
2669
27
  }
2670
2671
  /// Retrieve the switch-case statement with the given ID.
2672
27
  SwitchCase *getSwitchCaseWithID(unsigned ID) {
2673
27
    return Reader->getSwitchCaseWithID(ID);
2674
27
  }
2675
};
2676
2677
/// Helper class that saves the current stream position and
2678
/// then restores it when destroyed.
2679
struct SavedStreamPosition {
2680
  explicit SavedStreamPosition(llvm::BitstreamCursor &Cursor)
2681
609k
      : Cursor(Cursor), Offset(Cursor.GetCurrentBitNo()) {}
2682
2683
609k
  ~SavedStreamPosition() {
2684
609k
    if (llvm::Error Err = Cursor.JumpToBit(Offset))
2685
0
      llvm::report_fatal_error(
2686
0
          "Cursor should always be able to go back, failed: " +
2687
0
          toString(std::move(Err)));
2688
609k
  }
2689
2690
private:
2691
  llvm::BitstreamCursor &Cursor;
2692
  uint64_t Offset;
2693
};
2694
2695
0
inline void PCHValidator::Error(const char *Msg) {
2696
0
  Reader.Error(Msg);
2697
0
}
2698
2699
class OMPClauseReader : public OMPClauseVisitor<OMPClauseReader> {
2700
  ASTRecordReader &Record;
2701
  ASTContext &Context;
2702
2703
public:
2704
  OMPClauseReader(ASTRecordReader &Record)
2705
10.1k
      : Record(Record), Context(Record.getContext()) {}
2706
2707
#define OPENMP_CLAUSE(Name, Class) void Visit##Class(Class *C);
2708
#include "clang/Basic/OpenMPKinds.def"
2709
  OMPClause *readClause();
2710
  void VisitOMPClauseWithPreInit(OMPClauseWithPreInit *C);
2711
  void VisitOMPClauseWithPostUpdate(OMPClauseWithPostUpdate *C);
2712
};
2713
2714
} // namespace clang
2715
2716
#endif // LLVM_CLANG_SERIALIZATION_ASTREADER_H