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), Signature(0), 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     LocalNumCXXCtorInitializers(0), CXXCtorInitializersOffsets(nullptr),
42     FileSortedDecls(nullptr), NumFileSortedDecls(0),
43     RedeclarationsMap(nullptr), LocalNumRedeclarationsInMap(0),
44     ObjCCategoriesMap(nullptr), LocalNumObjCCategoriesInMap(0),
45     LocalNumTypes(0), TypeOffsets(nullptr), BaseTypeIndex(0)
46 {}
47 
48 ModuleFile::~ModuleFile() {
49   for (DeclContextInfosMap::iterator I = DeclContextInfos.begin(),
50        E = DeclContextInfos.end();
51        I != E; ++I) {
52     if (I->second.NameLookupTableData)
53       delete I->second.NameLookupTableData;
54   }
55 
56   delete static_cast<ASTIdentifierLookupTable *>(IdentifierLookupTable);
57   delete static_cast<HeaderFileInfoLookupTable *>(HeaderFileInfoTable);
58   delete static_cast<ASTSelectorLookupTable *>(SelectorLookupTable);
59 }
60 
61 template<typename Key, typename Offset, unsigned InitialCapacity>
62 static void
63 dumpLocalRemap(StringRef Name,
64                const ContinuousRangeMap<Key, Offset, InitialCapacity> &Map) {
65   if (Map.begin() == Map.end())
66     return;
67 
68   typedef ContinuousRangeMap<Key, Offset, InitialCapacity> MapType;
69   llvm::errs() << "  " << Name << ":\n";
70   for (typename MapType::const_iterator I = Map.begin(), IEnd = Map.end();
71        I != IEnd; ++I) {
72     llvm::errs() << "    " << I->first << " -> " << I->second << "\n";
73   }
74 }
75 
76 void ModuleFile::dump() {
77   llvm::errs() << "\nModule: " << FileName << "\n";
78   if (!Imports.empty()) {
79     llvm::errs() << "  Imports: ";
80     for (unsigned I = 0, N = Imports.size(); I != N; ++I) {
81       if (I)
82         llvm::errs() << ", ";
83       llvm::errs() << Imports[I]->FileName;
84     }
85     llvm::errs() << "\n";
86   }
87 
88   // Remapping tables.
89   llvm::errs() << "  Base source location offset: " << SLocEntryBaseOffset
90                << '\n';
91   dumpLocalRemap("Source location offset local -> global map", SLocRemap);
92 
93   llvm::errs() << "  Base identifier ID: " << BaseIdentifierID << '\n'
94                << "  Number of identifiers: " << LocalNumIdentifiers << '\n';
95   dumpLocalRemap("Identifier ID local -> global map", IdentifierRemap);
96 
97   llvm::errs() << "  Base macro ID: " << BaseMacroID << '\n'
98                << "  Number of macros: " << LocalNumMacros << '\n';
99   dumpLocalRemap("Macro ID local -> global map", MacroRemap);
100 
101   llvm::errs() << "  Base submodule ID: " << BaseSubmoduleID << '\n'
102                << "  Number of submodules: " << LocalNumSubmodules << '\n';
103   dumpLocalRemap("Submodule ID local -> global map", SubmoduleRemap);
104 
105   llvm::errs() << "  Base selector ID: " << BaseSelectorID << '\n'
106                << "  Number of selectors: " << LocalNumSelectors << '\n';
107   dumpLocalRemap("Selector ID local -> global map", SelectorRemap);
108 
109   llvm::errs() << "  Base preprocessed entity ID: " << BasePreprocessedEntityID
110                << '\n'
111                << "  Number of preprocessed entities: "
112                << NumPreprocessedEntities << '\n';
113   dumpLocalRemap("Preprocessed entity ID local -> global map",
114                  PreprocessedEntityRemap);
115 
116   llvm::errs() << "  Base type index: " << BaseTypeIndex << '\n'
117                << "  Number of types: " << LocalNumTypes << '\n';
118   dumpLocalRemap("Type index local -> global map", TypeRemap);
119 
120   llvm::errs() << "  Base decl ID: " << BaseDeclID << '\n'
121                << "  Number of decls: " << LocalNumDecls << '\n';
122   dumpLocalRemap("Decl ID local -> global map", DeclRemap);
123 }
124