/*
 * Copyright 2006 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.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.dev.javac.StandardGeneratorContext;

/**
 * Abstract base class for various kinds of deferred binding rules.
 */
public abstract class Rule {

  private final ConditionAll rootCondition = new ConditionAll();

  public ConditionAll getRootCondition() {
    return rootCondition;
  }

  public boolean isApplicable(TreeLogger logger,
      StandardGeneratorContext context, String typeName)
      throws UnableToCompleteException {
    return rootCondition.isTrue(logger, new DeferredBindingQuery(
        context.getPropertyOracle(), context.getActiveLinkerNames(),
        context.getTypeOracle(), typeName));
  }

  public abstract String realize(TreeLogger logger,
      StandardGeneratorContext context, String typeName)
      throws UnableToCompleteException;

  protected void dispose() {
  }
}