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      1 //===--- Module.cpp - Module description ------------------------*- C++ -*-===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is distributed under the University of Illinois Open Source
      6 // License. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 //
     10 //  This file implements the Module class, which describes a module that has
     11 //  been loaded from an AST file.
     12 //
     13 //===----------------------------------------------------------------------===//
     14 #include "clang/Serialization/Module.h"
     15 #include "ASTReaderInternals.h"
     16 #include "llvm/Support/MemoryBuffer.h"
     17 #include "llvm/Support/raw_ostream.h"
     18 
     19 using namespace clang;
     20 using namespace serialization;
     21 using namespace reader;
     22 
     23 ModuleFile::ModuleFile(ModuleKind Kind, unsigned Generation)
     24   : Kind(Kind), File(nullptr), DirectlyImported(false),
     25     Generation(Generation), SizeInBits(0),
     26     LocalNumSLocEntries(0), SLocEntryBaseID(0),
     27     SLocEntryBaseOffset(0), SLocEntryOffsets(nullptr),
     28     LocalNumIdentifiers(0),
     29     IdentifierOffsets(nullptr), BaseIdentifierID(0),
     30     IdentifierTableData(nullptr), IdentifierLookupTable(nullptr),
     31     LocalNumMacros(0), MacroOffsets(nullptr),
     32     BasePreprocessedEntityID(0),
     33     PreprocessedEntityOffsets(nullptr), NumPreprocessedEntities(0),
     34     LocalNumHeaderFileInfos(0),
     35     HeaderFileInfoTableData(nullptr), HeaderFileInfoTable(nullptr),
     36     LocalNumSubmodules(0), BaseSubmoduleID(0),
     37     LocalNumSelectors(0), SelectorOffsets(nullptr), BaseSelectorID(0),
     38     SelectorLookupTableData(nullptr), SelectorLookupTable(nullptr),
     39     LocalNumDecls(0), DeclOffsets(nullptr), BaseDeclID(0),
     40     LocalNumCXXBaseSpecifiers(0), CXXBaseSpecifiersOffsets(nullptr),
     41     FileSortedDecls(nullptr), NumFileSortedDecls(0),
     42     RedeclarationsMap(nullptr), LocalNumRedeclarationsInMap(0),
     43     ObjCCategoriesMap(nullptr), LocalNumObjCCategoriesInMap(0),
     44     LocalNumTypes(0), TypeOffsets(nullptr), BaseTypeIndex(0)
     45 {}
     46 
     47 ModuleFile::~ModuleFile() {
     48   for (DeclContextInfosMap::iterator I = DeclContextInfos.begin(),
     49        E = DeclContextInfos.end();
     50        I != E; ++I) {
     51     if (I->second.NameLookupTableData)
     52       delete I->second.NameLookupTableData;
     53   }
     54 
     55   delete static_cast<ASTIdentifierLookupTable *>(IdentifierLookupTable);
     56   delete static_cast<HeaderFileInfoLookupTable *>(HeaderFileInfoTable);
     57   delete static_cast<ASTSelectorLookupTable *>(SelectorLookupTable);
     58 }
     59 
     60 template<typename Key, typename Offset, unsigned InitialCapacity>
     61 static void
     62 dumpLocalRemap(StringRef Name,
     63                const ContinuousRangeMap<Key, Offset, InitialCapacity> &Map) {
     64   if (Map.begin() == Map.end())
     65     return;
     66 
     67   typedef ContinuousRangeMap<Key, Offset, InitialCapacity> MapType;
     68   llvm::errs() << "  " << Name << ":\n";
     69   for (typename MapType::const_iterator I = Map.begin(), IEnd = Map.end();
     70        I != IEnd; ++I) {
     71     llvm::errs() << "    " << I->first << " -> " << I->second << "\n";
     72   }
     73 }
     74 
     75 void ModuleFile::dump() {
     76   llvm::errs() << "\nModule: " << FileName << "\n";
     77   if (!Imports.empty()) {
     78     llvm::errs() << "  Imports: ";
     79     for (unsigned I = 0, N = Imports.size(); I != N; ++I) {
     80       if (I)
     81         llvm::errs() << ", ";
     82       llvm::errs() << Imports[I]->FileName;
     83     }
     84     llvm::errs() << "\n";
     85   }
     86 
     87   // Remapping tables.
     88   llvm::errs() << "  Base source location offset: " << SLocEntryBaseOffset
     89                << '\n';
     90   dumpLocalRemap("Source location offset local -> global map", SLocRemap);
     91 
     92   llvm::errs() << "  Base identifier ID: " << BaseIdentifierID << '\n'
     93                << "  Number of identifiers: " << LocalNumIdentifiers << '\n';
     94   dumpLocalRemap("Identifier ID local -> global map", IdentifierRemap);
     95 
     96   llvm::errs() << "  Base macro ID: " << BaseMacroID << '\n'
     97                << "  Number of macros: " << LocalNumMacros << '\n';
     98   dumpLocalRemap("Macro ID local -> global map", MacroRemap);
     99 
    100   llvm::errs() << "  Base submodule ID: " << BaseSubmoduleID << '\n'
    101                << "  Number of submodules: " << LocalNumSubmodules << '\n';
    102   dumpLocalRemap("Submodule ID local -> global map", SubmoduleRemap);
    103 
    104   llvm::errs() << "  Base selector ID: " << BaseSelectorID << '\n'
    105                << "  Number of selectors: " << LocalNumSelectors << '\n';
    106   dumpLocalRemap("Selector ID local -> global map", SelectorRemap);
    107 
    108   llvm::errs() << "  Base preprocessed entity ID: " << BasePreprocessedEntityID
    109                << '\n'
    110                << "  Number of preprocessed entities: "
    111                << NumPreprocessedEntities << '\n';
    112   dumpLocalRemap("Preprocessed entity ID local -> global map",
    113                  PreprocessedEntityRemap);
    114 
    115   llvm::errs() << "  Base type index: " << BaseTypeIndex << '\n'
    116                << "  Number of types: " << LocalNumTypes << '\n';
    117   dumpLocalRemap("Type index local -> global map", TypeRemap);
    118 
    119   llvm::errs() << "  Base decl ID: " << BaseDeclID << '\n'
    120                << "  Number of decls: " << LocalNumDecls << '\n';
    121   dumpLocalRemap("Decl ID local -> global map", DeclRemap);
    122 }
    123