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, int line_number, int char_offset)
  18     : file_(file),
  19       line_number_(line_number),
  20       char_offset_(char_offset) {
  21 }
  22
  23 bool Location::operator==(const Location& other) const {
  24   return other.file_ == file_ &&
  25          other.line_number_ == line_number_ &&
  26          other.char_offset_ == char_offset_;
  27 }
  28
  29 bool Location::operator!=(const Location& other) const {
  30   return !operator==(other);
  31 }
  32
  33 bool Location::operator<(const Location& other) const {
  34   DCHECK(file_ == other.file_);
  35   if (line_number_ != other.line_number_)
  36     return line_number_ < other.line_number_;
  37   return char_offset_ < other.char_offset_;
  38 }
  39
  40 std::string Location::Describe(bool include_char_offset) const {
  41   if (!file_)
  42     return std::string();
  43
  44   std::string ret;
  45   if (file_->friendly_name().empty())
  46     ret = file_->name().value();
  47   else
  48     ret = file_->friendly_name();
  49
  50   ret += ":";
  51   ret += base::IntToString(line_number_);
  52   if (include_char_offset) {
  53     ret += ":";
  54     ret += base::IntToString(char_offset_);
  55   }
  56   return ret;
  57 }
  58
  59 LocationRange::LocationRange() {
  60 }
  61
  62 LocationRange::LocationRange(const Location& begin, const Location& end)
  63     : begin_(begin),
  64       end_(end) {
  65   DCHECK(begin_.file() == end_.file());
  66 }
  67
  68 LocationRange LocationRange::Union(const LocationRange& other) const {
  69   DCHECK(begin_.file() == other.begin_.file());
  70   return LocationRange(
  71       begin_ < other.begin_ ? begin_ : other.begin_,
  72       end_ < other.end_ ? other.end_ : end_);
  73 }