com.google.gwt.dev.cfg.RuleFail Maven / Gradle / Ivy

/*
 * 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.GeneratorContext;
import com.google.gwt.core.ext.RebindResult;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.dev.javac.StandardGeneratorContext;

/**
 * A rule to explicitly fail during a deferred binding request.
 */
public class RuleFail extends Rule {

  @Override
  public void generateRuntimeRebindClasses(
      TreeLogger logger, ModuleDef module, GeneratorContext context)
      throws UnableToCompleteException {
    runtimeRebindRuleGenerator.generate(
        generateCreateInstanceExpression(), generateMatchesExpression());
  }

  @Override
  public RebindResult realize(TreeLogger logger, StandardGeneratorContext context,
      String typeName) throws UnableToCompleteException {
    logger.log(TreeLogger.ERROR, "Deferred binding request failed for type '"
        + typeName + "'", null);
    throw new UnableToCompleteException();
  }

  @Override
  public String toString() {
    return "";
  }

  @Override
  protected String generateCreateInstanceExpression() {
    return "throw 'Deferred binding request failed for type ' + requestTypeName + '.';";
  }

  @Override
  protected String generateMatchesExpression() {
    return "return " + getRootCondition().toSource() + ";";
  }
}