text: /*
   * Copyright 2013 the original author or authors.
   *
   * 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 org.gradle.api.internal.artifacts.ivyservice.ivyresolve.strategy;
  
  import com.google.common.collect.Lists;
  import org.gradle.api.internal.artifacts.metadata.ModuleVersionMetaData;
  
  import java.util.*;
  
  public class ChainVersionMatcher implements VersionMatcher {
      private final List<VersionMatcher> matchers = Lists.newArrayList();
  
      public void add(VersionMatcher matcher) {
          matchers.add(matcher);
      }
  
      public boolean canHandle(String selector) {
          // not expected to be called
          throw new UnsupportedOperationException("canHandle");
      }
  
      public boolean isDynamic(String selector) {
          return getCompatibleMatcher(selector).isDynamic(selector);
      }
  
      public boolean needModuleMetadata(String selector) {
          return getCompatibleMatcher(selector).needModuleMetadata(selector);
      }
  
      public boolean accept(String selector, String candidate) {
          return getCompatibleMatcher(selector).accept(selector, candidate);
      }
  
      public boolean accept(String selector, ModuleVersionMetaData candidate) {
          return getCompatibleMatcher(selector).accept(selector, candidate);
      }
  
      public int compare(String selector, String candidate) {
          return getCompatibleMatcher(selector).compare(selector, candidate);
      }
  
      private VersionMatcher getCompatibleMatcher(String selector) {
          for (VersionMatcher matcher : matchers) {
              if (matcher.canHandle(selector)) {
                  return matcher;
              }
          }
          throw new IllegalArgumentException("Invalid version selector: " + selector);
      }
  }
  
  