1 //===-- SymbolFile.cpp ------------------------------------------*- 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 #include "lldb/Symbol/SymbolFile.h"
11 
12 #include "lldb/Core/Log.h"
13 #include "lldb/Core/Module.h"
14 #include "lldb/Core/PluginManager.h"
15 #include "lldb/Core/StreamString.h"
16 #include "lldb/Symbol/ObjectFile.h"
17 #include "lldb/Symbol/TypeMap.h"
18 #include "lldb/Symbol/TypeSystem.h"
19 #include "lldb/Symbol/VariableList.h"
20 #include "lldb/lldb-private.h"
21 
22 using namespace lldb_private;
23 
24 SymbolFile *SymbolFile::FindPlugin(ObjectFile *obj_file) {
25   std::unique_ptr<SymbolFile> best_symfile_ap;
26   if (obj_file != nullptr) {
27 
28     // We need to test the abilities of this section list. So create what it
29     // would
30     // be with this new obj_file.
31     lldb::ModuleSP module_sp(obj_file->GetModule());
32     if (module_sp) {
33       // Default to the main module section list.
34       ObjectFile *module_obj_file = module_sp->GetObjectFile();
35       if (module_obj_file != obj_file) {
36         // Make sure the main object file's sections are created
37         module_obj_file->GetSectionList();
38         obj_file->CreateSections(*module_sp->GetUnifiedSectionList());
39       }
40     }
41 
42     // TODO: Load any plug-ins in the appropriate plug-in search paths and
43     // iterate over all of them to find the best one for the job.
44 
45     uint32_t best_symfile_abilities = 0;
46 
47     SymbolFileCreateInstance create_callback;
48     for (uint32_t idx = 0;
49          (create_callback = PluginManager::GetSymbolFileCreateCallbackAtIndex(
50               idx)) != nullptr;
51          ++idx) {
52       std::unique_ptr<SymbolFile> curr_symfile_ap(create_callback(obj_file));
53 
54       if (curr_symfile_ap.get()) {
55         const uint32_t sym_file_abilities = curr_symfile_ap->GetAbilities();
56         if (sym_file_abilities > best_symfile_abilities) {
57           best_symfile_abilities = sym_file_abilities;
58           best_symfile_ap.reset(curr_symfile_ap.release());
59           // If any symbol file parser has all of the abilities, then
60           // we should just stop looking.
61           if ((kAllAbilities & sym_file_abilities) == kAllAbilities)
62             break;
63         }
64       }
65     }
66     if (best_symfile_ap.get()) {
67       // Let the winning symbol file parser initialize itself more
68       // completely now that it has been chosen
69       best_symfile_ap->InitializeObject();
70     }
71   }
72   return best_symfile_ap.release();
73 }
74 
75 TypeList *SymbolFile::GetTypeList() {
76   if (m_obj_file)
77     return m_obj_file->GetModule()->GetTypeList();
78   return nullptr;
79 }
80 
81 TypeSystem *SymbolFile::GetTypeSystemForLanguage(lldb::LanguageType language) {
82   TypeSystem *type_system =
83       m_obj_file->GetModule()->GetTypeSystemForLanguage(language);
84   if (type_system)
85     type_system->SetSymbolFile(this);
86   return type_system;
87 }
88 
89 uint32_t SymbolFile::ResolveSymbolContext(const FileSpec &file_spec,
90                                           uint32_t line, bool check_inlines,
91                                           uint32_t resolve_scope,
92                                           SymbolContextList &sc_list) {
93   return 0;
94 }
95 
96 uint32_t SymbolFile::FindGlobalVariables(
97     const ConstString &name, const CompilerDeclContext *parent_decl_ctx,
98     bool append, uint32_t max_matches, VariableList &variables) {
99   if (!append)
100     variables.Clear();
101   return 0;
102 }
103 
104 uint32_t SymbolFile::FindGlobalVariables(const RegularExpression &regex,
105                                          bool append, uint32_t max_matches,
106                                          VariableList &variables) {
107   if (!append)
108     variables.Clear();
109   return 0;
110 }
111 
112 uint32_t SymbolFile::FindFunctions(const ConstString &name,
113                                    const CompilerDeclContext *parent_decl_ctx,
114                                    uint32_t name_type_mask,
115                                    bool include_inlines, bool append,
116                                    SymbolContextList &sc_list) {
117   if (!append)
118     sc_list.Clear();
119   return 0;
120 }
121 
122 uint32_t SymbolFile::FindFunctions(const RegularExpression &regex,
123                                    bool include_inlines, bool append,
124                                    SymbolContextList &sc_list) {
125   if (!append)
126     sc_list.Clear();
127   return 0;
128 }
129 
130 void SymbolFile::GetMangledNamesForFunction(
131     const std::string &scope_qualified_name,
132     std::vector<ConstString> &mangled_names) {
133   return;
134 }
135 
136 uint32_t SymbolFile::FindTypes(
137     const SymbolContext &sc, const ConstString &name,
138     const CompilerDeclContext *parent_decl_ctx, bool append,
139     uint32_t max_matches,
140     llvm::DenseSet<lldb_private::SymbolFile *> &searched_symbol_files,
141     TypeMap &types) {
142   if (!append)
143     types.Clear();
144   return 0;
145 }
146 
147 size_t SymbolFile::FindTypes(const std::vector<CompilerContext> &context,
148                              bool append, TypeMap &types) {
149   if (!append)
150     types.Clear();
151   return 0;
152 }
153