content: /*
   * Copyright (C) 2008 The Android Open Source Project
   *
   * 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.taobao.android.dx.rop.cst;
  
  import com.taobao.android.dx.rop.type.Type;
  
  /**
   * Utility for turning types into zeroes.
   */
  public final class Zeroes {
      /**
       * This class is uninstantiable.
       */
      private Zeroes() {
          // This space intentionally left blank.
      }
  
      /**
       * Gets the "zero" (or {@code null}) value for the given type.
       *
       * @param type {@code non-null;} the type in question
       * @return {@code non-null;} its "zero" value
       */
      public static Constant zeroFor(Type type) {
          switch (type.getBasicType()) {
              case Type.BT_BOOLEAN: return CstBoolean.VALUE_FALSE;
              case Type.BT_BYTE:    return CstByte.VALUE_0;
              case Type.BT_CHAR:    return CstChar.VALUE_0;
              case Type.BT_DOUBLE:  return CstDouble.VALUE_0;
              case Type.BT_FLOAT:   return CstFloat.VALUE_0;
              case Type.BT_INT:     return CstInteger.VALUE_0;
              case Type.BT_LONG:    return CstLong.VALUE_0;
              case Type.BT_SHORT:   return CstShort.VALUE_0;
              case Type.BT_OBJECT:  return CstKnownNull.THE_ONE;
              default: {
                  throw new UnsupportedOperationException("no zero for type: " +
                          type.toHuman());
              }
          }
      }
  }
  