tools/aapt2/Source.h

/*
 * 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 "util/Maybe.h"
#include "util/StringPiece.h"

#include <ostream>
#include <string>

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 StringPiece& path)
      : path(path.toString()) {  // NOLINT(implicit)
  }

  inline Source(const StringPiece& path, size_t line)
      : path(path.toString()), line(line) {}

  inline Source withLine(size_t line) const { return Source(path, line); }
};

//
// Implementations
//

inline ::std::ostream& operator<<(::std::ostream& out, const Source& source) {
  out << source.path;
  if (source.line) {
    out << ":" << source.line.value();
  }
  return out;
}

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