MapCfgComparator.java

/*
 * Copyright 2003-2014 JetBrains s.r.o.
 *
 * 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 jetbrains.mps.generator.impl.plan;

import jetbrains.mps.generator.runtime.TemplateMappingConfiguration;
import jetbrains.mps.generator.runtime.TemplateModel;

import java.util.Comparator;

/**
 * Predictable ordering for sequence of {@link jetbrains.mps.generator.runtime.TemplateMappingConfiguration}
 */
public class MapCfgComparator implements Comparator<TemplateMappingConfiguration> {
  @Override
  public int compare(TemplateMappingConfiguration o1, TemplateMappingConfiguration o2) {
    TemplateModel m1 = o1.getModel();
    TemplateModel m2 = o2.getModel();
    if (m1 == m2) {
      return o1.getName().compareTo(o2.getName());
    }
    return m1.getLongName().compareTo(m2.getLongName());
  }
}