content: /*
   * Copyright (C) 2007 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;
  
  /**
   * Constant type to represent a known-{@code null} value.
   */
  public final class CstKnownNull extends CstLiteralBits {
      /** {@code non-null;} unique instance of this class */
      public static final CstKnownNull THE_ONE = new CstKnownNull();
  
      /**
       * Constructs an instance. This class is not publicly instantiable. Use
       * {@link #THE_ONE}.
       */
      private CstKnownNull() {
          // This space intentionally left blank.
      }
  
      /** {@inheritDoc} */
      @Override
      public boolean equals(Object other) {
          return (other instanceof CstKnownNull);
      }
  
      /** {@inheritDoc} */
      @Override
      public int hashCode() {
          return 0x4466757a;
      }
  
      /** {@inheritDoc} */
      @Override
      protected int compareTo0(Constant other) {
          return 0;
      }
  
      /** {@inheritDoc} */
      @Override
      public String toString() {
          return "known-null";
      }
  
      /** {@inheritDoc} */
      public Type getType() {
          return Type.KNOWN_NULL;
      }
  
      /** {@inheritDoc} */
      @Override
      public String typeName() {
          return "known-null";
      }
  
      /** {@inheritDoc} */
      @Override
      public boolean isCategory2() {
          return false;
      }
  
      /** {@inheritDoc} */
      public String toHuman() {
          return "null";
      }
  
      /** {@inheritDoc} */
      @Override
      public boolean fitsInInt() {
          // See comment in getIntBits().
          return true;
      }
  
      /**
       * {@inheritDoc}
       *
       * As "literal bits," a known-null is always represented as the
       * number zero.
       */
      @Override
      public int getIntBits() {
          return 0;
      }
  
      /**
       * {@inheritDoc}
       *
       * As "literal bits," a known-null is always represented as the
       * number zero.
       */
      @Override
      public long getLongBits() {
          return 0;
      }
  }
  