SymbolFile.cpp revision 254729 
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/lldb-private.h"
13#include "lldb/Core/Log.h"
14#include "lldb/Core/Module.h"
15#include "lldb/Core/PluginManager.h"
16#include "lldb/Core/StreamString.h"
17#include "lldb/Symbol/ObjectFile.h"
18
19using namespace lldb_private;
20
21SymbolFile*
22SymbolFile::FindPlugin (ObjectFile* obj_file)
23{
24    std::unique_ptr<SymbolFile> best_symfile_ap;
25    if (obj_file != NULL)
26    {
27
28        // We need to test the abilities of this section list. So create what it would
29        // be with this new obj_file.
30        lldb::ModuleSP module_sp(obj_file->GetModule());
31        if (module_sp)
32        {
33            // Default to the main module section list.
34            ObjectFile *module_obj_file = module_sp->GetObjectFile();
35            if (module_obj_file != obj_file)
36            {
37                // Make sure the main object file's sections are created
38                module_obj_file->GetSectionList();
39                obj_file->CreateSections (*module_sp->GetUnifiedSectionList());
40            }
41        }
42
43        // TODO: Load any plug-ins in the appropriate plug-in search paths and
44        // iterate over all of them to find the best one for the job.
45
46        uint32_t best_symfile_abilities = 0;
47
48        SymbolFileCreateInstance create_callback;
49        for (uint32_t idx = 0; (create_callback = PluginManager::GetSymbolFileCreateCallbackAtIndex(idx)) != NULL; ++idx)
50        {
51            std::unique_ptr<SymbolFile> curr_symfile_ap(create_callback(obj_file));
52
53            if (curr_symfile_ap.get())
54            {
55                const uint32_t sym_file_abilities = curr_symfile_ap->GetAbilities();
56                if (sym_file_abilities > best_symfile_abilities)
57                {
58                    best_symfile_abilities = sym_file_abilities;
59                    best_symfile_ap.reset (curr_symfile_ap.release());
60                    // If any symbol file parser has all of the abilities, then
61                    // we should just stop looking.
62                    if ((kAllAbilities & sym_file_abilities) == kAllAbilities)
63                        break;
64                }
65            }
66        }
67        if (best_symfile_ap.get())
68        {
69            // Let the winning symbol file parser initialize itself more
70            // completely now that it has been chosen
71            best_symfile_ap->InitializeObject();
72        }
73    }
74    return best_symfile_ap.release();
75}
76
77TypeList *
78SymbolFile::GetTypeList ()
79{
80    if (m_obj_file)
81        return m_obj_file->GetModule()->GetTypeList();
82    return NULL;
83}
84
85lldb_private::ClangASTContext &
86SymbolFile::GetClangASTContext ()
87{
88    return m_obj_file->GetModule()->GetClangASTContext();
89}
90