text: /*
   * Copyright (C) 2015 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  #ifndef AAPT_SOURCE_H
  #define AAPT_SOURCE_H
  
  #include <ostream>
  #include <string>
  
  #include "android-base/stringprintf.h"
  #include "androidfw/StringPiece.h"
  
  #include "util/Maybe.h"
  
  namespace aapt {
  
  // Represents a file on disk. Used for logging and showing errors.
  struct Source {
    std::string path;
    Maybe<size_t> line;
  
    Source() = default;
  
    inline Source(const android::StringPiece& path) : path(path.to_string()) {  // NOLINT(implicit)
    }
  
    inline Source(const android::StringPiece& path, size_t line)
        : path(path.to_string()), line(line) {}
  
    inline Source WithLine(size_t line) const {
      return Source(path, line);
    }
  
    std::string to_string() const {
      if (line) {
        return ::android::base::StringPrintf("%s:%zd", path.c_str(), line.value());
      }
      return path;
    }
  };
  
  //
  // Implementations
  //
  
  inline ::std::ostream& operator<<(::std::ostream& out, const Source& source) {
    return out << source.to_string();
  }
  
  inline bool operator==(const Source& lhs, const Source& rhs) {
    return lhs.path == rhs.path && lhs.line == rhs.line;
  }
  
  inline bool operator<(const Source& lhs, const Source& rhs) {
    int cmp = lhs.path.compare(rhs.path);
    if (cmp < 0) return true;
    if (cmp > 0) return false;
    if (lhs.line) {
      if (rhs.line) {
        return lhs.line.value() < rhs.line.value();
      }
      return false;
    }
    return bool(rhs.line);
  }
  
  }  // namespace aapt
  
  #endif  // AAPT_SOURCE_H
  