platform/lang-impl/src/com/intellij/psi/util/proximity/SameModuleWeigher.java

/*
 * Copyright 2000-2009 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 com.intellij.psi.util.proximity;

import com.intellij.openapi.module.Module;
import com.intellij.openapi.module.ModuleUtil;
import com.intellij.psi.PsiElement;
import com.intellij.psi.util.ProximityLocation;
import org.jetbrains.annotations.NotNull;

/**
 * @author peter
*/
public class SameModuleWeigher extends ProximityWeigher {

  @Override
  public Comparable weigh(@NotNull final PsiElement element, @NotNull final ProximityLocation location) {
    final Module elementModule = ModuleUtil.findModuleForPsiElement(element);
    if (location.getPositionModule() == elementModule) {
      return 2;
    }

    if (elementModule != null) {
      return 1; // in project => still not bad
    }

    return 0;
  }
}