| //===-- SourceManager.cpp ---------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "lldb/Core/SourceManager.h" |
| |
| #include "lldb/Core/Address.h" // for Address |
| #include "lldb/Core/AddressRange.h" // for AddressRange |
| #include "lldb/Core/Debugger.h" |
| #include "lldb/Core/FormatEntity.h" // for FormatEntity |
| #include "lldb/Core/Module.h" |
| #include "lldb/Core/ModuleList.h" // for ModuleList |
| #include "lldb/Host/FileSystem.h" |
| #include "lldb/Symbol/CompileUnit.h" |
| #include "lldb/Symbol/Function.h" |
| #include "lldb/Symbol/LineEntry.h" // for LineEntry |
| #include "lldb/Symbol/SymbolContext.h" |
| #include "lldb/Target/PathMappingList.h" // for PathMappingList |
| #include "lldb/Target/Target.h" |
| #include "lldb/Utility/ConstString.h" // for ConstString |
| #include "lldb/Utility/DataBuffer.h" |
| #include "lldb/Utility/DataBufferLLVM.h" |
| #include "lldb/Utility/RegularExpression.h" |
| #include "lldb/Utility/Stream.h" |
| #include "lldb/lldb-enumerations.h" // for StopShowColumn::eStopSho... |
| |
| #include "llvm/ADT/Twine.h" // for Twine |
| |
| #include <memory> |
| #include <utility> // for pair |
| |
| #include <assert.h> // for assert |
| #include <stdio.h> // for size_t, NULL, snprintf |
| |
| namespace lldb_private { |
| class ExecutionContext; |
| } |
| namespace lldb_private { |
| class ValueObject; |
| } |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| static inline bool is_newline_char(char ch) { return ch == '\n' || ch == '\r'; } |
| |
| //---------------------------------------------------------------------- |
| // SourceManager constructor |
| //---------------------------------------------------------------------- |
| SourceManager::SourceManager(const TargetSP &target_sp) |
| : m_last_file_sp(), m_last_line(0), m_last_count(0), m_default_set(false), |
| m_target_wp(target_sp), |
| m_debugger_wp(target_sp->GetDebugger().shared_from_this()) {} |
| |
| SourceManager::SourceManager(const DebuggerSP &debugger_sp) |
| : m_last_file_sp(), m_last_line(0), m_last_count(0), m_default_set(false), |
| m_target_wp(), m_debugger_wp(debugger_sp) {} |
| |
| //---------------------------------------------------------------------- |
| // Destructor |
| //---------------------------------------------------------------------- |
| SourceManager::~SourceManager() {} |
| |
| SourceManager::FileSP SourceManager::GetFile(const FileSpec &file_spec) { |
| bool same_as_previous = |
| m_last_file_sp && m_last_file_sp->FileSpecMatches(file_spec); |
| |
| DebuggerSP debugger_sp(m_debugger_wp.lock()); |
| FileSP file_sp; |
| if (same_as_previous) |
| file_sp = m_last_file_sp; |
| else if (debugger_sp) |
| file_sp = debugger_sp->GetSourceFileCache().FindSourceFile(file_spec); |
| |
| TargetSP target_sp(m_target_wp.lock()); |
| |
| // It the target source path map has been updated, get this file again so we |
| // can successfully remap the source file |
| if (target_sp && file_sp && |
| file_sp->GetSourceMapModificationID() != |
| target_sp->GetSourcePathMap().GetModificationID()) |
| file_sp.reset(); |
| |
| // Update the file contents if needed if we found a file |
| if (file_sp) |
| file_sp->UpdateIfNeeded(); |
| |
| // If file_sp is no good or it points to a non-existent file, reset it. |
| if (!file_sp || !file_sp->GetFileSpec().Exists()) { |
| if (target_sp) |
| file_sp = std::make_shared<File>(file_spec, target_sp.get()); |
| else |
| file_sp = std::make_shared<File>(file_spec, debugger_sp); |
| |
| if (debugger_sp) |
| debugger_sp->GetSourceFileCache().AddSourceFile(file_sp); |
| } |
| return file_sp; |
| } |
| |
| static bool should_show_stop_column_with_ansi(DebuggerSP debugger_sp) { |
| // We don't use ANSI stop column formatting if we can't lookup values from |
| // the debugger. |
| if (!debugger_sp) |
| return false; |
| |
| // We don't use ANSI stop column formatting if the debugger doesn't think it |
| // should be using color. |
| if (!debugger_sp->GetUseColor()) |
| return false; |
| |
| // We only use ANSI stop column formatting if we're either supposed to show |
| // ANSI where available (which we know we have when we get to this point), or |
| // if we're only supposed to use ANSI. |
| const auto value = debugger_sp->GetStopShowColumn(); |
| return ((value == eStopShowColumnAnsiOrCaret) || |
| (value == eStopShowColumnAnsi)); |
| } |
| |
| static bool should_show_stop_column_with_caret(DebuggerSP debugger_sp) { |
| // We don't use text-based stop column formatting if we can't lookup values |
| // from the debugger. |
| if (!debugger_sp) |
| return false; |
| |
| // If we're asked to show the first available of ANSI or caret, then we do |
| // show the caret when ANSI is not available. |
| const auto value = debugger_sp->GetStopShowColumn(); |
| if ((value == eStopShowColumnAnsiOrCaret) && !debugger_sp->GetUseColor()) |
| return true; |
| |
| // The only other time we use caret is if we're explicitly asked to show |
| // caret. |
| return value == eStopShowColumnCaret; |
| } |
| |
| size_t SourceManager::DisplaySourceLinesWithLineNumbersUsingLastFile( |
| uint32_t start_line, uint32_t count, uint32_t curr_line, uint32_t column, |
| const char *current_line_cstr, Stream *s, |
| const SymbolContextList *bp_locs) { |
| if (count == 0) |
| return 0; |
| size_t return_value = 0; |
| if (start_line == 0) { |
| if (m_last_line != 0 && m_last_line != UINT32_MAX) |
| start_line = m_last_line + m_last_count; |
| else |
| start_line = 1; |
| } |
| |
| if (!m_default_set) { |
| FileSpec tmp_spec; |
| uint32_t tmp_line; |
| GetDefaultFileAndLine(tmp_spec, tmp_line); |
| } |
| |
| m_last_line = start_line; |
| m_last_count = count; |
| |
| if (m_last_file_sp.get()) { |
| const uint32_t end_line = start_line + count - 1; |
| for (uint32_t line = start_line; line <= end_line; ++line) { |
| if (!m_last_file_sp->LineIsValid(line)) { |
| m_last_line = UINT32_MAX; |
| break; |
| } |
| |
| char prefix[32] = ""; |
| if (bp_locs) { |
| uint32_t bp_count = bp_locs->NumLineEntriesWithLine(line); |
| |
| if (bp_count > 0) |
| ::snprintf(prefix, sizeof(prefix), "[%u] ", bp_count); |
| else |
| ::snprintf(prefix, sizeof(prefix), " "); |
| } |
| |
| return_value += |
| s->Printf("%s%2.2s %-4u\t", prefix, |
| line == curr_line ? current_line_cstr : "", line); |
| size_t this_line_size = m_last_file_sp->DisplaySourceLines( |
| line, line == curr_line ? column : 0, 0, 0, s); |
| if (column != 0 && line == curr_line && |
| should_show_stop_column_with_caret(m_debugger_wp.lock())) { |
| // Display caret cursor. |
| std::string src_line; |
| m_last_file_sp->GetLine(line, src_line); |
| return_value += s->Printf(" \t"); |
| // Insert a space for every non-tab character in the source line. |
| for (size_t i = 0; i + 1 < column && i < src_line.length(); ++i) |
| return_value += s->PutChar(src_line[i] == '\t' ? '\t' : ' '); |
| // Now add the caret. |
| return_value += s->Printf("^\n"); |
| } |
| if (this_line_size == 0) { |
| m_last_line = UINT32_MAX; |
| break; |
| } else |
| return_value += this_line_size; |
| } |
| } |
| return return_value; |
| } |
| |
| size_t SourceManager::DisplaySourceLinesWithLineNumbers( |
| const FileSpec &file_spec, uint32_t line, uint32_t column, |
| uint32_t context_before, uint32_t context_after, |
| const char *current_line_cstr, Stream *s, |
| const SymbolContextList *bp_locs) { |
| FileSP file_sp(GetFile(file_spec)); |
| |
| uint32_t start_line; |
| uint32_t count = context_before + context_after + 1; |
| if (line > context_before) |
| start_line = line - context_before; |
| else |
| start_line = 1; |
| |
| if (m_last_file_sp.get() != file_sp.get()) { |
| if (line == 0) |
| m_last_line = 0; |
| m_last_file_sp = file_sp; |
| } |
| return DisplaySourceLinesWithLineNumbersUsingLastFile( |
| start_line, count, line, column, current_line_cstr, s, bp_locs); |
| } |
| |
| size_t SourceManager::DisplayMoreWithLineNumbers( |
| Stream *s, uint32_t count, bool reverse, const SymbolContextList *bp_locs) { |
| // If we get called before anybody has set a default file and line, then try |
| // to figure it out here. |
| const bool have_default_file_line = m_last_file_sp && m_last_line > 0; |
| if (!m_default_set) { |
| FileSpec tmp_spec; |
| uint32_t tmp_line; |
| GetDefaultFileAndLine(tmp_spec, tmp_line); |
| } |
| |
| if (m_last_file_sp) { |
| if (m_last_line == UINT32_MAX) |
| return 0; |
| |
| if (reverse && m_last_line == 1) |
| return 0; |
| |
| if (count > 0) |
| m_last_count = count; |
| else if (m_last_count == 0) |
| m_last_count = 10; |
| |
| if (m_last_line > 0) { |
| if (reverse) { |
| // If this is the first time we've done a reverse, then back up one |
| // more time so we end up showing the chunk before the last one we've |
| // shown: |
| if (m_last_line > m_last_count) |
| m_last_line -= m_last_count; |
| else |
| m_last_line = 1; |
| } else if (have_default_file_line) |
| m_last_line += m_last_count; |
| } else |
| m_last_line = 1; |
| |
| const uint32_t column = 0; |
| return DisplaySourceLinesWithLineNumbersUsingLastFile( |
| m_last_line, m_last_count, UINT32_MAX, column, "", s, bp_locs); |
| } |
| return 0; |
| } |
| |
| bool SourceManager::SetDefaultFileAndLine(const FileSpec &file_spec, |
| uint32_t line) { |
| FileSP old_file_sp = m_last_file_sp; |
| m_last_file_sp = GetFile(file_spec); |
| |
| m_default_set = true; |
| if (m_last_file_sp) { |
| m_last_line = line; |
| return true; |
| } else { |
| m_last_file_sp = old_file_sp; |
| return false; |
| } |
| } |
| |
| bool SourceManager::GetDefaultFileAndLine(FileSpec &file_spec, uint32_t &line) { |
| if (m_last_file_sp) { |
| file_spec = m_last_file_sp->GetFileSpec(); |
| line = m_last_line; |
| return true; |
| } else if (!m_default_set) { |
| TargetSP target_sp(m_target_wp.lock()); |
| |
| if (target_sp) { |
| // If nobody has set the default file and line then try here. If there's |
| // no executable, then we will try again later when there is one. |
| // Otherwise, if we can't find it we won't look again, somebody will have |
| // to set it (for instance when we stop somewhere...) |
| Module *executable_ptr = target_sp->GetExecutableModulePointer(); |
| if (executable_ptr) { |
| SymbolContextList sc_list; |
| ConstString main_name("main"); |
| bool symbols_okay = false; // Force it to be a debug symbol. |
| bool inlines_okay = true; |
| bool append = false; |
| size_t num_matches = executable_ptr->FindFunctions( |
| main_name, NULL, lldb::eFunctionNameTypeBase, inlines_okay, |
| symbols_okay, append, sc_list); |
| for (size_t idx = 0; idx < num_matches; idx++) { |
| SymbolContext sc; |
| sc_list.GetContextAtIndex(idx, sc); |
| if (sc.function) { |
| lldb_private::LineEntry line_entry; |
| if (sc.function->GetAddressRange() |
| .GetBaseAddress() |
| .CalculateSymbolContextLineEntry(line_entry)) { |
| SetDefaultFileAndLine(line_entry.file, line_entry.line); |
| file_spec = m_last_file_sp->GetFileSpec(); |
| line = m_last_line; |
| return true; |
| } |
| } |
| } |
| } |
| } |
| } |
| return false; |
| } |
| |
| void SourceManager::FindLinesMatchingRegex(FileSpec &file_spec, |
| RegularExpression ®ex, |
| uint32_t start_line, |
| uint32_t end_line, |
| std::vector<uint32_t> &match_lines) { |
| match_lines.clear(); |
| FileSP file_sp = GetFile(file_spec); |
| if (!file_sp) |
| return; |
| return file_sp->FindLinesMatchingRegex(regex, start_line, end_line, |
| match_lines); |
| } |
| |
| SourceManager::File::File(const FileSpec &file_spec, |
| lldb::DebuggerSP debugger_sp) |
| : m_file_spec_orig(file_spec), m_file_spec(file_spec), |
| m_mod_time(FileSystem::GetModificationTime(file_spec)), |
| m_debugger_wp(debugger_sp) { |
| CommonInitializer(file_spec, nullptr); |
| } |
| |
| SourceManager::File::File(const FileSpec &file_spec, Target *target) |
| : m_file_spec_orig(file_spec), m_file_spec(file_spec), |
| m_mod_time(FileSystem::GetModificationTime(file_spec)), |
| m_debugger_wp(target ? target->GetDebugger().shared_from_this() |
| : DebuggerSP()) { |
| CommonInitializer(file_spec, target); |
| } |
| |
| void SourceManager::File::CommonInitializer(const FileSpec &file_spec, |
| Target *target) { |
| if (m_mod_time == llvm::sys::TimePoint<>()) { |
| if (target) { |
| m_source_map_mod_id = target->GetSourcePathMap().GetModificationID(); |
| |
| if (!file_spec.GetDirectory() && file_spec.GetFilename()) { |
| // If this is just a file name, lets see if we can find it in the |
| // target: |
| bool check_inlines = false; |
| SymbolContextList sc_list; |
| size_t num_matches = |
| target->GetImages().ResolveSymbolContextForFilePath( |
| file_spec.GetFilename().AsCString(), 0, check_inlines, |
| lldb::eSymbolContextModule | lldb::eSymbolContextCompUnit, |
| sc_list); |
| bool got_multiple = false; |
| if (num_matches != 0) { |
| if (num_matches > 1) { |
| SymbolContext sc; |
| FileSpec *test_cu_spec = NULL; |
| |
| for (unsigned i = 0; i < num_matches; i++) { |
| sc_list.GetContextAtIndex(i, sc); |
| if (sc.comp_unit) { |
| if (test_cu_spec) { |
| if (test_cu_spec != static_cast<FileSpec *>(sc.comp_unit)) |
| got_multiple = true; |
| break; |
| } else |
| test_cu_spec = sc.comp_unit; |
| } |
| } |
| } |
| if (!got_multiple) { |
| SymbolContext sc; |
| sc_list.GetContextAtIndex(0, sc); |
| m_file_spec = sc.comp_unit; |
| m_mod_time = FileSystem::GetModificationTime(m_file_spec); |
| } |
| } |
| } |
| // Try remapping if m_file_spec does not correspond to an existing file. |
| if (!m_file_spec.Exists()) { |
| FileSpec new_file_spec; |
| // Check target specific source remappings first, then fall back to |
| // modules objects can have individual path remappings that were |
| // detected when the debug info for a module was found. then |
| if (target->GetSourcePathMap().FindFile(m_file_spec, new_file_spec) || |
| target->GetImages().FindSourceFile(m_file_spec, new_file_spec)) { |
| m_file_spec = new_file_spec; |
| m_mod_time = FileSystem::GetModificationTime(m_file_spec); |
| } |
| } |
| } |
| } |
| |
| if (m_mod_time != llvm::sys::TimePoint<>()) |
| m_data_sp = DataBufferLLVM::CreateFromPath(m_file_spec.GetPath()); |
| } |
| |
| uint32_t SourceManager::File::GetLineOffset(uint32_t line) { |
| if (line == 0) |
| return UINT32_MAX; |
| |
| if (line == 1) |
| return 0; |
| |
| if (CalculateLineOffsets(line)) { |
| if (line < m_offsets.size()) |
| return m_offsets[line - 1]; // yes we want "line - 1" in the index |
| } |
| return UINT32_MAX; |
| } |
| |
| uint32_t SourceManager::File::GetNumLines() { |
| CalculateLineOffsets(); |
| return m_offsets.size(); |
| } |
| |
| const char *SourceManager::File::PeekLineData(uint32_t line) { |
| if (!LineIsValid(line)) |
| return NULL; |
| |
| size_t line_offset = GetLineOffset(line); |
| if (line_offset < m_data_sp->GetByteSize()) |
| return (const char *)m_data_sp->GetBytes() + line_offset; |
| return NULL; |
| } |
| |
| uint32_t SourceManager::File::GetLineLength(uint32_t line, |
| bool include_newline_chars) { |
| if (!LineIsValid(line)) |
| return false; |
| |
| size_t start_offset = GetLineOffset(line); |
| size_t end_offset = GetLineOffset(line + 1); |
| if (end_offset == UINT32_MAX) |
| end_offset = m_data_sp->GetByteSize(); |
| |
| if (end_offset > start_offset) { |
| uint32_t length = end_offset - start_offset; |
| if (include_newline_chars == false) { |
| const char *line_start = |
| (const char *)m_data_sp->GetBytes() + start_offset; |
| while (length > 0) { |
| const char last_char = line_start[length - 1]; |
| if ((last_char == '\r') || (last_char == '\n')) |
| --length; |
| else |
| break; |
| } |
| } |
| return length; |
| } |
| return 0; |
| } |
| |
| bool SourceManager::File::LineIsValid(uint32_t line) { |
| if (line == 0) |
| return false; |
| |
| if (CalculateLineOffsets(line)) |
| return line < m_offsets.size(); |
| return false; |
| } |
| |
| void SourceManager::File::UpdateIfNeeded() { |
| // TODO: use host API to sign up for file modifications to anything in our |
| // source cache and only update when we determine a file has been updated. |
| // For now we check each time we want to display info for the file. |
| auto curr_mod_time = FileSystem::GetModificationTime(m_file_spec); |
| |
| if (curr_mod_time != llvm::sys::TimePoint<>() && |
| m_mod_time != curr_mod_time) { |
| m_mod_time = curr_mod_time; |
| m_data_sp = DataBufferLLVM::CreateFromPath(m_file_spec.GetPath()); |
| m_offsets.clear(); |
| } |
| } |
| |
| size_t SourceManager::File::DisplaySourceLines(uint32_t line, uint32_t column, |
| uint32_t context_before, |
| uint32_t context_after, |
| Stream *s) { |
| // Nothing to write if there's no stream. |
| if (!s) |
| return 0; |
| |
| // Sanity check m_data_sp before proceeding. |
| if (!m_data_sp) |
| return 0; |
| |
| const uint32_t start_line = |
| line <= context_before ? 1 : line - context_before; |
| const uint32_t start_line_offset = GetLineOffset(start_line); |
| if (start_line_offset != UINT32_MAX) { |
| const uint32_t end_line = line + context_after; |
| uint32_t end_line_offset = GetLineOffset(end_line + 1); |
| if (end_line_offset == UINT32_MAX) |
| end_line_offset = m_data_sp->GetByteSize(); |
| |
| assert(start_line_offset <= end_line_offset); |
| size_t bytes_written = 0; |
| if (start_line_offset < end_line_offset) { |
| size_t count = end_line_offset - start_line_offset; |
| const uint8_t *cstr = m_data_sp->GetBytes() + start_line_offset; |
| |
| bool displayed_line = false; |
| |
| if (column && (column < count)) { |
| auto debugger_sp = m_debugger_wp.lock(); |
| if (should_show_stop_column_with_ansi(debugger_sp) && debugger_sp) { |
| // Check if we have any ANSI codes with which to mark this column. If |
| // not, no need to do this work. |
| auto ansi_prefix_entry = debugger_sp->GetStopShowColumnAnsiPrefix(); |
| auto ansi_suffix_entry = debugger_sp->GetStopShowColumnAnsiSuffix(); |
| |
| // We only bother breaking up the line to format the marked column if |
| // there is any marking specified on both sides of the marked column. |
| // In ANSI-terminal-sequence land, there must be a post if there is a |
| // pre format, and vice versa. |
| if (ansi_prefix_entry && ansi_suffix_entry) { |
| // Mark the current column with the desired escape sequence for |
| // formatting the column (e.g. underline, inverse, etc.) |
| |
| // First print the part before the column to mark. |
| bytes_written = s->Write(cstr, column - 1); |
| |
| // Write the pre escape sequence. |
| const SymbolContext *sc = nullptr; |
| const ExecutionContext *exe_ctx = nullptr; |
| const Address addr = LLDB_INVALID_ADDRESS; |
| ValueObject *valobj = nullptr; |
| const bool function_changed = false; |
| const bool initial_function = false; |
| |
| FormatEntity::Format(*ansi_prefix_entry, *s, sc, exe_ctx, &addr, |
| valobj, function_changed, initial_function); |
| |
| // Write the marked column. |
| bytes_written += s->Write(cstr + column - 1, 1); |
| |
| // Write the post escape sequence. |
| FormatEntity::Format(*ansi_suffix_entry, *s, sc, exe_ctx, &addr, |
| valobj, function_changed, initial_function); |
| |
| // And finish up with the rest of the line. |
| bytes_written += s->Write(cstr + column, count - column); |
| |
| // Keep track of the fact that we just wrote the line. |
| displayed_line = true; |
| } |
| } |
| } |
| |
| // If we didn't end up displaying the line with ANSI codes for whatever |
| // reason, display it now sans codes. |
| if (!displayed_line) |
| bytes_written = s->Write(cstr, count); |
| |
| // Ensure we get an end of line character one way or another. |
| if (!is_newline_char(cstr[count - 1])) |
| bytes_written += s->EOL(); |
| } |
| return bytes_written; |
| } |
| return 0; |
| } |
| |
| void SourceManager::File::FindLinesMatchingRegex( |
| RegularExpression ®ex, uint32_t start_line, uint32_t end_line, |
| std::vector<uint32_t> &match_lines) { |
| match_lines.clear(); |
| |
| if (!LineIsValid(start_line) || |
| (end_line != UINT32_MAX && !LineIsValid(end_line))) |
| return; |
| if (start_line > end_line) |
| return; |
| |
| for (uint32_t line_no = start_line; line_no < end_line; line_no++) { |
| std::string buffer; |
| if (!GetLine(line_no, buffer)) |
| break; |
| if (regex.Execute(buffer)) { |
| match_lines.push_back(line_no); |
| } |
| } |
| } |
| |
| bool SourceManager::File::FileSpecMatches(const FileSpec &file_spec) { |
| return FileSpec::Equal(m_file_spec, file_spec, false); |
| } |
| |
| bool lldb_private::operator==(const SourceManager::File &lhs, |
| const SourceManager::File &rhs) { |
| if (lhs.m_file_spec != rhs.m_file_spec) |
| return false; |
| return lhs.m_mod_time == rhs.m_mod_time; |
| } |
| |
| bool SourceManager::File::CalculateLineOffsets(uint32_t line) { |
| line = |
| UINT32_MAX; // TODO: take this line out when we support partial indexing |
| if (line == UINT32_MAX) { |
| // Already done? |
| if (!m_offsets.empty() && m_offsets[0] == UINT32_MAX) |
| return true; |
| |
| if (m_offsets.empty()) { |
| if (m_data_sp.get() == NULL) |
| return false; |
| |
| const char *start = (char *)m_data_sp->GetBytes(); |
| if (start) { |
| const char *end = start + m_data_sp->GetByteSize(); |
| |
| // Calculate all line offsets from scratch |
| |
| // Push a 1 at index zero to indicate the file has been completely |
| // indexed. |
| m_offsets.push_back(UINT32_MAX); |
| const char *s; |
| for (s = start; s < end; ++s) { |
| char curr_ch = *s; |
| if (is_newline_char(curr_ch)) { |
| if (s + 1 < end) { |
| char next_ch = s[1]; |
| if (is_newline_char(next_ch)) { |
| if (curr_ch != next_ch) |
| ++s; |
| } |
| } |
| m_offsets.push_back(s + 1 - start); |
| } |
| } |
| if (!m_offsets.empty()) { |
| if (m_offsets.back() < size_t(end - start)) |
| m_offsets.push_back(end - start); |
| } |
| return true; |
| } |
| } else { |
| // Some lines have been populated, start where we last left off |
| assert("Not implemented yet" && false); |
| } |
| |
| } else { |
| // Calculate all line offsets up to "line" |
| assert("Not implemented yet" && false); |
| } |
| return false; |
| } |
| |
| bool SourceManager::File::GetLine(uint32_t line_no, std::string &buffer) { |
| if (!LineIsValid(line_no)) |
| return false; |
| |
| size_t start_offset = GetLineOffset(line_no); |
| size_t end_offset = GetLineOffset(line_no + 1); |
| if (end_offset == UINT32_MAX) { |
| end_offset = m_data_sp->GetByteSize(); |
| } |
| buffer.assign((char *)m_data_sp->GetBytes() + start_offset, |
| end_offset - start_offset); |
| |
| return true; |
| } |
| |
| void SourceManager::SourceFileCache::AddSourceFile(const FileSP &file_sp) { |
| FileSpec file_spec; |
| FileCache::iterator pos = m_file_cache.find(file_spec); |
| if (pos == m_file_cache.end()) |
| m_file_cache[file_spec] = file_sp; |
| else { |
| if (file_sp != pos->second) |
| m_file_cache[file_spec] = file_sp; |
| } |
| } |
| |
| SourceManager::FileSP SourceManager::SourceFileCache::FindSourceFile( |
| const FileSpec &file_spec) const { |
| FileSP file_sp; |
| FileCache::const_iterator pos = m_file_cache.find(file_spec); |
| if (pos != m_file_cache.end()) |
| file_sp = pos->second; |
| return file_sp; |
| } |