plugins/IntentionPowerPak/src/com/siyeh/ipp/exceptions/HierarchicalTypeComparator.java

/*
 * Copyright 2003-2012 Dave Griffith, Bas Leijdekkers
 *
 * 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.siyeh.ipp.exceptions;

import com.intellij.psi.PsiType;

import java.util.Comparator;

class HierarchicalTypeComparator implements Comparator<PsiType> {

  @Override
  public int compare(PsiType type1, PsiType type2) {
    if (type1.isAssignableFrom(type2)) {
      return 1;
    }
    if (type2.isAssignableFrom(type1)) {
      return -1;
    }
    final String canonicalText1 = type1.getCanonicalText();
    return canonicalText1.compareTo(type2.getCanonicalText());
  }
}