lib/symbol.dart

// Copyright (c) 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

part of cassowary;

enum _SymbolType { invalid, external, slack, error, dummy, }

class _Symbol {
  final _SymbolType type;
  int tick;

  _Symbol(this.type, this.tick);

  String toString() {
    String typeString = "unknown";
    switch (type) {
      case _SymbolType.invalid:
        typeString = "i";
        break;
      case _SymbolType.external:
        typeString = "v";
        break;
      case _SymbolType.slack:
        typeString = "s";
        break;
      case _SymbolType.error:
        typeString = "e";
        break;
      case _SymbolType.dummy:
        typeString = "d";
        break;
    }
    return "${typeString}${tick}";
  }
}