/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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
    *
   *   https://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.apache.bcel.classfile;
  
  import java.io.DataOutputStream;
  import java.io.IOException;
  
  import org.apache.bcel.util.Args;
  
  /**
   * Represents an array element value in an annotation.
   *
   * @since 6.0
   */
  public class ArrayElementValue extends ElementValue {
      // For array types, this is the array
      private final ElementValue[] elementValues;
  
      /**
       * Constructs an ArrayElementValue.
       *
       * @param type The type.
       * @param elementValues The element values.
       * @param cpool The constant pool.
       */
      public ArrayElementValue(final int type, final ElementValue[] elementValues, final ConstantPool cpool) {
          super(type, cpool);
          if (type != ARRAY) {
              throw new ClassFormatException("Only element values of type array can be built with this ctor - type specified: " + type);
          }
          this.elementValues = elementValues != null ? elementValues : EMPTY_ARRAY;
      }
  
      @Override
      public void dump(final DataOutputStream dos) throws IOException {
          dos.writeByte(super.getType()); // u1 type of value (ARRAY == '[')
          dos.writeShort(Args.requireU2(elementValues.length, "elementValues.length"));
          for (final ElementValue evalue : elementValues) {
              evalue.dump(dos);
          }
      }
  
      /**
       * Gets the element values array.
       *
       * @return The element values array.
       */
      public ElementValue[] getElementValuesArray() {
          return elementValues;
      }
  
      /**
       * Gets the element values array size.
       *
       * @return The element values array size.
       */
      public int getElementValuesArraySize() {
          return elementValues.length;
      }
  
      @Override
      public String stringifyValue() {
          final StringBuilder sb = new StringBuilder();
          sb.append("[");
          for (int i = 0; i < elementValues.length; i++) {
              sb.append(elementValues[i].stringifyValue());
              if (i + 1 < elementValues.length) {
                  sb.append(",");
              }
          }
          sb.append("]");
          return sb.toString();
      }
  
      @Override
      public String toString() {
          final StringBuilder sb = new StringBuilder();
          sb.append("{");
          for (int i = 0; i < elementValues.length; i++) {
              sb.append(elementValues[i]);
              if (i + 1 < elementValues.length) {
                  sb.append(",");
              }
         }
         sb.append("}");
         return sb.toString();
     }
 }