IMatchModifier.java

/*
 * Copyright 2003-2011 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.lang.pattern.util;

import org.jetbrains.mps.openapi.model.SNode;

import java.util.List;

public interface IMatchModifier {
  public boolean accept(SNode node1, SNode node2);

  public boolean acceptList(List<SNode> nodes1, List<SNode> nodes2);

  public void performAction(SNode node1, SNode node2);

  public void performGroupAction(List<SNode> nodes1, List<SNode> nodes2);

  public static final IMatchModifier DEFAULT = new IMatchModifier() {
    @Override
    public boolean accept(SNode node1, SNode node2) {
      return false;
    }

    @Override
    public boolean acceptList(List<SNode> nodes1, List<SNode> nodes2) {
      return false;
    }

    @Override
    public void performAction(SNode node1, SNode node2) {
    }

    @Override
    public void performGroupAction(List<SNode> nodes1, List<SNode> nodes2) {
    }
  };
}