content: /*
   * Copyright 2016 HuntBugs contributors
   * 
   * 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 one.util.huntbugs.flow.etype;
  
  import java.util.Set;
  import java.util.stream.Collectors;
  
  /**
   * @author shustkost
   *
   */
  abstract class ComplexType implements EType {
      Set<SingleType> types;
  
      public ComplexType(Set<SingleType> types) {
          this.types = types;
      }
  
      abstract EType reduce();
  
      abstract EType append(SingleType st);
      
      abstract EType appendAny(EType type);
      
      @Override
      public int hashCode() {
          return types.hashCode();
      }
  
      @Override
      public boolean equals(Object obj) {
          if (this == obj)
              return true;
          if (obj == null || getClass() != obj.getClass())
              return false;
          return types.equals(((ComplexType) obj).types);
      }
  
      String toString(String delimiter) {
          return types.stream().map(EType::toString).map(typeStr -> typeStr.contains(" ") ? "(" + typeStr + ")" : typeStr)
                  .sorted().collect(Collectors.joining(delimiter));
      }
  }
  