/*
 * Copyright 2008 Google Inc.
 * 
 * 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.gwt.dev.cfg;

import com.google.gwt.core.ext.Generator;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.dev.javac.StandardGeneratorContext;

/**
 * A rule to replace the type being rebound with a class whose name is
 * determined by a generator class. Generators usually generate new classes
 * during the deferred binding process, but it is not required.
 */
public class RuleGenerateWith extends Rule {

  private Class<? extends Generator> generatorClass;

  public RuleGenerateWith(Class<? extends Generator> generatorClass) {
    this.generatorClass = generatorClass;
  }

  public String realize(TreeLogger logger, StandardGeneratorContext context,
      String typeName) throws UnableToCompleteException {
    return context.runGenerator(logger, generatorClass, typeName);
  }

  public String toString() {
    return "<generate-with class='" + generatorClass.getName() + "'/>";
  }
}