1 //===-- DWARFASTParserClang.h -----------------------------------*- 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 #ifndef SymbolFileDWARF_DWARFASTParserClang_h_
11 #define SymbolFileDWARF_DWARFASTParserClang_h_
12 
13 // C Includes
14 // C++ Includes
15 // Other libraries and framework includes
16 #include "llvm/ADT/DenseMap.h"
17 #include "llvm/ADT/SmallPtrSet.h"
18 #include "llvm/ADT/SmallVector.h"
19 #include "clang/AST/CharUnits.h"
20 
21 // Project includes
22 #include "lldb/Core/ClangForward.h"
23 #include "lldb/Core/PluginInterface.h"
24 #include "lldb/Symbol/ClangASTContext.h"
25 #include "DWARFDefines.h"
26 #include "DWARFASTParser.h"
27 
28 class DWARFDebugInfoEntry;
29 class DWARFDIECollection;
30 
31 class DWARFASTParserClang : public DWARFASTParser
32 {
33 public:
34     DWARFASTParserClang (lldb_private::ClangASTContext &ast);
35 
36     ~DWARFASTParserClang() override;
37 
38     lldb::TypeSP
39     ParseTypeFromDWARF (const lldb_private::SymbolContext& sc,
40                         const DWARFDIE &die,
41                         lldb_private::Log *log,
42                         bool *type_is_new_ptr) override;
43 
44 
45     lldb_private::Function *
46     ParseFunctionFromDWARF (const lldb_private::SymbolContext& sc,
47                             const DWARFDIE &die) override;
48 
49     bool
50     CanCompleteType (const lldb_private::CompilerType &compiler_type) override;
51 
52     bool
53     CompleteType (const lldb_private::CompilerType &compiler_type) override;
54 
55     bool
56     CompleteTypeFromDWARF (const DWARFDIE &die,
57                            lldb_private::Type *type,
58                            lldb_private::CompilerType &compiler_type) override;
59 
60     lldb_private::CompilerDecl
61     GetDeclForUIDFromDWARF (const DWARFDIE &die) override;
62 
63     std::vector<DWARFDIE>
64     GetDIEForDeclContext (lldb_private::CompilerDeclContext decl_context) override;
65 
66     lldb_private::CompilerDeclContext
67     GetDeclContextForUIDFromDWARF (const DWARFDIE &die) override;
68 
69     lldb_private::CompilerDeclContext
70     GetDeclContextContainingUIDFromDWARF (const DWARFDIE &die) override;
71 
72     bool
73     LayoutRecordType(const clang::RecordDecl *record_decl,
74                      uint64_t &bit_size,
75                      uint64_t &alignment,
76                      llvm::DenseMap<const clang::FieldDecl *, uint64_t> &field_offsets,
77                      llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets,
78                      llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets);
79 
80 protected:
81     class DelayedAddObjCClassProperty;
82     typedef std::vector <DelayedAddObjCClassProperty> DelayedPropertyList;
83 
84     struct LayoutInfo
85     {
86         LayoutInfo () :
87         bit_size(0),
88         alignment(0),
89         field_offsets(),
90         base_offsets(),
91         vbase_offsets()
92         {
93         }
94         uint64_t bit_size;
95         uint64_t alignment;
96         llvm::DenseMap<const clang::FieldDecl *, uint64_t> field_offsets;
97         llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> base_offsets;
98         llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> vbase_offsets;
99     };
100 
101     clang::BlockDecl *
102     ResolveBlockDIE (const DWARFDIE &die);
103 
104     clang::NamespaceDecl *
105     ResolveNamespaceDIE (const DWARFDIE &die);
106 
107     typedef llvm::DenseMap<const clang::RecordDecl *, LayoutInfo> RecordDeclToLayoutMap;
108 
109     bool
110     ParseTemplateDIE (const DWARFDIE &die,
111                       lldb_private::ClangASTContext::TemplateParameterInfos &template_param_infos);
112     bool
113     ParseTemplateParameterInfos (const DWARFDIE &parent_die,
114                                  lldb_private::ClangASTContext::TemplateParameterInfos &template_param_infos);
115 
116     bool
117     ParseChildMembers (const lldb_private::SymbolContext& sc,
118                        const DWARFDIE &die,
119                        lldb_private::CompilerType &class_compiler_type,
120                        const lldb::LanguageType class_language,
121                        std::vector<clang::CXXBaseSpecifier *>& base_classes,
122                        std::vector<int>& member_accessibilities,
123                        DWARFDIECollection& member_function_dies,
124                        DelayedPropertyList& delayed_properties,
125                        lldb::AccessType &default_accessibility,
126                        bool &is_a_class,
127                        LayoutInfo &layout_info);
128 
129     size_t
130     ParseChildParameters (const lldb_private::SymbolContext& sc,
131                           clang::DeclContext *containing_decl_ctx,
132                           const DWARFDIE &parent_die,
133                           bool skip_artificial,
134                           bool &is_static,
135                           bool &is_variadic,
136                           bool &has_template_params,
137                           std::vector<lldb_private::CompilerType>& function_args,
138                           std::vector<clang::ParmVarDecl*>& function_param_decls,
139                           unsigned &type_quals);
140 
141     void
142     ParseChildArrayInfo (const lldb_private::SymbolContext& sc,
143                          const DWARFDIE &parent_die,
144                          int64_t& first_index,
145                          std::vector<uint64_t>& element_orders,
146                          uint32_t& byte_stride,
147                          uint32_t& bit_stride);
148 
149     size_t
150     ParseChildEnumerators (const lldb_private::SymbolContext& sc,
151                            lldb_private::CompilerType &compiler_type,
152                            bool is_signed,
153                            uint32_t enumerator_byte_size,
154                            const DWARFDIE &parent_die);
155 
156     lldb_private::Type *
157     GetTypeForDIE (const DWARFDIE &die);
158 
159     clang::Decl *
160     GetClangDeclForDIE (const DWARFDIE &die);
161 
162     clang::DeclContext *
163     GetClangDeclContextForDIE (const DWARFDIE &die);
164 
165     clang::DeclContext *
166     GetClangDeclContextContainingDIE (const DWARFDIE &die,
167                                       DWARFDIE *decl_ctx_die);
168 
169     bool
170     CopyUniqueClassMethodTypes (const DWARFDIE &src_class_die,
171                                 const DWARFDIE &dst_class_die,
172                                 lldb_private::Type *class_type,
173                                 DWARFDIECollection &failures);
174 
175     clang::DeclContext *
176     GetCachedClangDeclContextForDIE (const DWARFDIE &die);
177 
178     void
179     LinkDeclContextToDIE (clang::DeclContext *decl_ctx,
180                           const DWARFDIE &die);
181 
182     void
183     LinkDeclToDIE (clang::Decl *decl, const DWARFDIE &die);
184 
185     lldb_private::ClangASTImporter &
186     GetClangASTImporter();
187 
188     lldb::TypeSP
189     ParseTypeFromDWO (const DWARFDIE &die, lldb_private::Log *log);
190 
191     //----------------------------------------------------------------------
192     // Return true if this type is a declaration to a type in an external
193     // module.
194     //----------------------------------------------------------------------
195     lldb::ModuleSP
196     GetModuleForType (const DWARFDIE &die);
197 
198     typedef llvm::SmallPtrSet<const DWARFDebugInfoEntry *, 4> DIEPointerSet;
199     typedef llvm::DenseMap<const DWARFDebugInfoEntry *, clang::DeclContext *> DIEToDeclContextMap;
200     //typedef llvm::DenseMap<const clang::DeclContext *, DIEPointerSet> DeclContextToDIEMap;
201     typedef std::multimap<const clang::DeclContext *, const DWARFDIE> DeclContextToDIEMap;
202     typedef llvm::DenseMap<const DWARFDebugInfoEntry *, clang::Decl *> DIEToDeclMap;
203     typedef llvm::DenseMap<const clang::Decl *, DIEPointerSet> DeclToDIEMap;
204 
205     lldb_private::ClangASTContext &m_ast;
206     DIEToDeclMap m_die_to_decl;
207     DeclToDIEMap m_decl_to_die;
208     DIEToDeclContextMap m_die_to_decl_ctx;
209     DeclContextToDIEMap m_decl_ctx_to_die;
210     RecordDeclToLayoutMap m_record_decl_to_layout_map;
211     std::unique_ptr<lldb_private::ClangASTImporter> m_clang_ast_importer_ap;
212 };
213 
214 #endif // SymbolFileDWARF_DWARFASTParserClang_h_
215