lldb/source/Core/FileLineResolver.cpp

   1 //===-- FileLineResolver.cpp ----------------------------------------------===//
   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/Symbol/CompileUnit.h"
  12 #include "lldb/Symbol/LineTable.h"
  13 #include "lldb/Utility/ConstString.h"
  14 #include "lldb/Utility/FileSpecList.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 // FileLineResolver:
  27 FileLineResolver::FileLineResolver(const FileSpec &file_spec, uint32_t line_no,
  28                                    bool check_inlines)
  29     : Searcher(), m_file_spec(file_spec), m_line_number(line_no),
  30       m_inlines(check_inlines) {}
  31
  32 FileLineResolver::~FileLineResolver() = default;
  33
  34 Searcher::CallbackReturn
  35 FileLineResolver::SearchCallback(SearchFilter &filter, SymbolContext &context,
  36                                  Address *addr) {
  37   CompileUnit *cu = context.comp_unit;
  38
  39   if (m_inlines || m_file_spec.Compare(cu->GetPrimaryFile(), m_file_spec,
  40                                        (bool)m_file_spec.GetDirectory())) {
  41     uint32_t start_file_idx = 0;
  42     uint32_t file_idx =
  43         cu->GetSupportFiles().FindFileIndex(start_file_idx, m_file_spec, false);
  44     if (file_idx != UINT32_MAX) {
  45       LineTable *line_table = cu->GetLineTable();
  46       if (line_table) {
  47         if (m_line_number == 0) {
  48           // Match all lines in a file...
  49           const bool append = true;
  50           while (file_idx != UINT32_MAX) {
  51             line_table->FindLineEntriesForFileIndex(file_idx, append,
  52                                                     m_sc_list);
  53             // Get the next file index in case we have multiple file entries
  54             // for the same file
  55             file_idx = cu->GetSupportFiles().FindFileIndex(file_idx + 1,
  56                                                            m_file_spec, false);
  57           }
  58         } else {
  59           // Match a specific line in a file...
  60         }
  61       }
  62     }
  63   }
  64   return Searcher::eCallbackReturnContinue;
  65 }
  66
  67 lldb::SearchDepth FileLineResolver::GetDepth() {
  68   return lldb::eSearchDepthCompUnit;
  69 }
  70
  71 void FileLineResolver::GetDescription(Stream *s) {
  72   s->Printf("File and line resolver for file: \"%s\" line: %u",
  73             m_file_spec.GetPath().c_str(), m_line_number);
  74 }
  75
  76 void FileLineResolver::Clear() {
  77   m_file_spec.Clear();
  78   m_line_number = UINT32_MAX;
  79   m_sc_list.Clear();
  80   m_inlines = true;
  81 }
  82
  83 void FileLineResolver::Reset(const FileSpec &file_spec, uint32_t line,
  84                              bool check_inlines) {
  85   m_file_spec = file_spec;
  86   m_line_number = line;
  87   m_sc_list.Clear();
  88   m_inlines = check_inlines;
  89 }