/*
 * Copyright 2010 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.jjs.impl;

/**
 * Provides linking information for types for separate compilation.
 */
public interface TypeLinker {

  TypeLinker NULL_TYPE_LINKER = new TypeLinker() {
    public boolean isExternalType(String name) {
      return false;
    }
  };

  /**
   * Returns true if the type is external (source code not provided) to the
   * program.
   */
  boolean isExternalType(String name);
}