// Copyright 2014 The Bazel Authors. All rights reserved.
//
// 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.
package com.google.devtools.build.lib.packages;
/**
* Enum used to represent tri-state parameters in rule attributes (yes/no/auto).
*/
public enum TriState {
YES,
NO,
AUTO;
public int toInt() {
switch (this) {
case YES:
return 1;
case NO:
return 0;
case AUTO:
return -1;
default:
throw new IllegalStateException();
}
}
}