src/tools/gn/location.cc

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "tools/gn/location.h"
   6
   7 #include "base/logging.h"
   8 #include "base/strings/string_number_conversions.h"
   9 #include "tools/gn/input_file.h"
  10
  11 Location::Location()
  12     : file_(NULL),
  13       line_number_(-1),
  14       char_offset_(-1) {
  15 }
  16
  17 Location::Location(const InputFile* file,
  18                    int line_number,
  19                    int char_offset,
  20                    int byte)
  21     : file_(file),
  22       line_number_(line_number),
  23       char_offset_(char_offset),
  24       byte_(byte) {
  25 }
  26
  27 bool Location::operator==(const Location& other) const {
  28   return other.file_ == file_ &&
  29          other.line_number_ == line_number_ &&
  30          other.char_offset_ == char_offset_;
  31 }
  32
  33 bool Location::operator!=(const Location& other) const {
  34   return !operator==(other);
  35 }
  36
  37 bool Location::operator<(const Location& other) const {
  38   DCHECK(file_ == other.file_);
  39   if (line_number_ != other.line_number_)
  40     return line_number_ < other.line_number_;
  41   return char_offset_ < other.char_offset_;
  42 }
  43
  44 std::string Location::Describe(bool include_char_offset) const {
  45   if (!file_)
  46     return std::string();
  47
  48   std::string ret;
  49   if (file_->friendly_name().empty())
  50     ret = file_->name().value();
  51   else
  52     ret = file_->friendly_name();
  53
  54   ret += ":";
  55   ret += base::IntToString(line_number_);
  56   if (include_char_offset) {
  57     ret += ":";
  58     ret += base::IntToString(char_offset_);
  59   }
  60   return ret;
  61 }
  62
  63 LocationRange::LocationRange() {
  64 }
  65
  66 LocationRange::LocationRange(const Location& begin, const Location& end)
  67     : begin_(begin),
  68       end_(end) {
  69   DCHECK(begin_.file() == end_.file());
  70 }
  71
  72 LocationRange LocationRange::Union(const LocationRange& other) const {
  73   DCHECK(begin_.file() == other.begin_.file());
  74   return LocationRange(
  75       begin_ < other.begin_ ? begin_ : other.begin_,
  76       end_ < other.end_ ? other.end_ : end_);
  77 }