1 //===-- FileLineResolver.cpp ------------------------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "lldb/Core/FileLineResolver.h"
10 
11 #include "lldb/Core/FileSpecList.h"
12 #include "lldb/Symbol/CompileUnit.h"
13 #include "lldb/Symbol/LineTable.h"
14 #include "lldb/Utility/ConstString.h"
15 #include "lldb/Utility/Stream.h"
16 
17 #include <string>
18 
19 namespace lldb_private {
20 class Address;
21 }
22 
23 using namespace lldb;
24 using namespace lldb_private;
25 
26 //----------------------------------------------------------------------
27 // FileLineResolver:
28 //----------------------------------------------------------------------
29 FileLineResolver::FileLineResolver(const FileSpec &file_spec, uint32_t line_no,
30                                    bool check_inlines)
31     : Searcher(), m_file_spec(file_spec), m_line_number(line_no),
32       m_inlines(check_inlines) {}
33 
34 FileLineResolver::~FileLineResolver() {}
35 
36 Searcher::CallbackReturn
37 FileLineResolver::SearchCallback(SearchFilter &filter, SymbolContext &context,
38                                  Address *addr, bool containing) {
39   CompileUnit *cu = context.comp_unit;
40 
41   if (m_inlines ||
42       m_file_spec.Compare(*cu, m_file_spec, (bool)m_file_spec.GetDirectory())) {
43     uint32_t start_file_idx = 0;
44     uint32_t file_idx =
45         cu->GetSupportFiles().FindFileIndex(start_file_idx, m_file_spec, false);
46     if (file_idx != UINT32_MAX) {
47       LineTable *line_table = cu->GetLineTable();
48       if (line_table) {
49         if (m_line_number == 0) {
50           // Match all lines in a file...
51           const bool append = true;
52           while (file_idx != UINT32_MAX) {
53             line_table->FineLineEntriesForFileIndex(file_idx, append,
54                                                     m_sc_list);
55             // Get the next file index in case we have multiple file entries
56             // for the same file
57             file_idx = cu->GetSupportFiles().FindFileIndex(file_idx + 1,
58                                                            m_file_spec, false);
59           }
60         } else {
61           // Match a specific line in a file...
62         }
63       }
64     }
65   }
66   return Searcher::eCallbackReturnContinue;
67 }
68 
69 lldb::SearchDepth FileLineResolver::GetDepth() {
70   return lldb::eSearchDepthCompUnit;
71 }
72 
73 void FileLineResolver::GetDescription(Stream *s) {
74   s->Printf("File and line resolver for file: \"%s\" line: %u",
75             m_file_spec.GetPath().c_str(), m_line_number);
76 }
77 
78 void FileLineResolver::Clear() {
79   m_file_spec.Clear();
80   m_line_number = UINT32_MAX;
81   m_sc_list.Clear();
82   m_inlines = true;
83 }
84 
85 void FileLineResolver::Reset(const FileSpec &file_spec, uint32_t line,
86                              bool check_inlines) {
87   m_file_spec = file_spec;
88   m_line_number = line;
89   m_sc_list.Clear();
90   m_inlines = check_inlines;
91 }
92