1 files changed, 0 insertions, 701 deletions

diff --git a/contrib/llvm/tools/lldb/source/Core/SourceManager.cpp b/contrib/llvm/tools/lldb/source/Core/SourceManager.cpp
deleted file mode 100644
index 87065ab62425..000000000000
--- a/contrib/llvm/tools/lldb/source/Core/SourceManager.cpp
+++ /dev/null
@@ -1,701 +0,0 @@
-//===-- SourceManager.cpp ---------------------------------------*- C++ -*-===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#include "lldb/Core/SourceManager.h"
-
-#include "lldb/Core/Address.h"
-#include "lldb/Core/AddressRange.h"
-#include "lldb/Core/Debugger.h"
-#include "lldb/Core/FormatEntity.h"
-#include "lldb/Core/Highlighter.h"
-#include "lldb/Core/Module.h"
-#include "lldb/Core/ModuleList.h"
-#include "lldb/Host/FileSystem.h"
-#include "lldb/Symbol/CompileUnit.h"
-#include "lldb/Symbol/Function.h"
-#include "lldb/Symbol/LineEntry.h"
-#include "lldb/Symbol/SymbolContext.h"
-#include "lldb/Target/PathMappingList.h"
-#include "lldb/Target/Target.h"
-#include "lldb/Utility/ConstString.h"
-#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"
-
-#include "llvm/ADT/Twine.h"
-
-#include <memory>
-#include <utility>
-
-#include <assert.h>
-#include <stdio.h>
-
-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 || !FileSystem::Instance().Exists(file_sp->GetFileSpec())) {
-    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_highlight_source(DebuggerSP debugger_sp) {
-  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;
-
-  return debugger_sp->GetHighlightSource();
-}
-
-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;
-
-  Stream::ByteDelta delta(*s);
-
-  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), "    ");
-      }
-
-      s->Printf("%s%2.2s %-4u\t", prefix,
-                line == curr_line ? current_line_cstr : "", line);
-
-      // So far we treated column 0 as a special 'no column value', but
-      // DisplaySourceLines starts counting columns from 0 (and no column is
-      // expressed by passing an empty optional).
-      llvm::Optional<size_t> columnToHighlight;
-      if (line == curr_line && column)
-        columnToHighlight = column - 1;
-
-      size_t this_line_size =
-          m_last_file_sp->DisplaySourceLines(line, columnToHighlight, 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);
-        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)
-          s->PutChar(src_line[i] == '\t' ? '\t' : ' ');
-        // Now add the caret.
-        s->Printf("^\n");
-      }
-      if (this_line_size == 0) {
-        m_last_line = UINT32_MAX;
-        break;
-      }
-    }
-  }
-  return *delta;
-}
-
-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, nullptr, 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 &regex,
-                                           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::Instance().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::Instance().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,
-                SymbolContextItem(eSymbolContextModule |
-                                  eSymbolContextCompUnit),
-                sc_list);
-        bool got_multiple = false;
-        if (num_matches != 0) {
-          if (num_matches > 1) {
-            SymbolContext sc;
-            FileSpec *test_cu_spec = nullptr;
-
-            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::Instance().GetModificationTime(m_file_spec);
-          }
-        }
-      }
-      // Try remapping if m_file_spec does not correspond to an existing file.
-      if (!FileSystem::Instance().Exists(m_file_spec)) {
-        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::Instance().GetModificationTime(m_file_spec);
-        }
-      }
-    }
-  }
-
-  if (m_mod_time != llvm::sys::TimePoint<>())
-    m_data_sp = FileSystem::Instance().CreateDataBuffer(m_file_spec);
-}
-
-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 nullptr;
-
-  size_t line_offset = GetLineOffset(line);
-  if (line_offset < m_data_sp->GetByteSize())
-    return (const char *)m_data_sp->GetBytes() + line_offset;
-  return nullptr;
-}
-
-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) {
-      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::Instance().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 = FileSystem::Instance().CreateDataBuffer(m_file_spec);
-    m_offsets.clear();
-  }
-}
-
-size_t SourceManager::File::DisplaySourceLines(uint32_t line,
-                                               llvm::Optional<size_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;
-
-  size_t bytes_written = s->GetWrittenBytes();
-
-  auto debugger_sp = m_debugger_wp.lock();
-
-  HighlightStyle style;
-  // Use the default Vim style if source highlighting is enabled.
-  if (should_highlight_source(debugger_sp))
-    style = HighlightStyle::MakeVimStyle();
-
-  // If we should mark the stop column with color codes, then copy the prefix
-  // and suffix to our color style.
-  if (should_show_stop_column_with_ansi(debugger_sp))
-    style.selected.Set(debugger_sp->GetStopShowColumnAnsiPrefix(),
-                       debugger_sp->GetStopShowColumnAnsiSuffix());
-
-  HighlighterManager mgr;
-  std::string path = GetFileSpec().GetPath(/*denormalize*/ false);
-  // FIXME: Find a way to get the definitive language this file was written in
-  // and pass it to the highlighter.
-  const auto &h = mgr.getHighlighterFor(lldb::eLanguageTypeUnknown, path);
-
-  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);
-    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;
-
-      auto ref = llvm::StringRef(reinterpret_cast<const char *>(cstr), count);
-
-      h.Highlight(style, ref, column, "", *s);
-
-      // Ensure we get an end of line character one way or another.
-      if (!is_newline_char(ref.back()))
-        s->EOL();
-    }
-  }
-  return s->GetWrittenBytes() - bytes_written;
-}
-
-void SourceManager::File::FindLinesMatchingRegex(
-    RegularExpression &regex, 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() == nullptr)
-        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;
-}