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;
  import com.taobao.android.dx.util.Hex;
  
  /**
   * Constants of type {@code CONSTANT_Integer_info}.
   */
  public final class CstInteger
          extends CstLiteral32 {
      /** {@code non-null;} array of cached instances */
      private static final CstInteger[] cache = new CstInteger[511];
  
      /** {@code non-null;} instance representing {@code -1} */
      public static final CstInteger VALUE_M1 = make(-1);
  
      /** {@code non-null;} instance representing {@code 0} */
      public static final CstInteger VALUE_0 = make(0);
  
      /** {@code non-null;} instance representing {@code 1} */
      public static final CstInteger VALUE_1 = make(1);
  
      /** {@code non-null;} instance representing {@code 2} */
      public static final CstInteger VALUE_2 = make(2);
  
      /** {@code non-null;} instance representing {@code 3} */
      public static final CstInteger VALUE_3 = make(3);
  
      /** {@code non-null;} instance representing {@code 4} */
      public static final CstInteger VALUE_4 = make(4);
  
      /** {@code non-null;} instance representing {@code 5} */
      public static final CstInteger VALUE_5 = make(5);
  
      /**
       * Makes an instance for the given value. This may (but does not
       * necessarily) return an already-allocated instance.
       *
       * @param value the {@code int} value
       * @return {@code non-null;} the appropriate instance
       */
      public static CstInteger make(int value) {
          /*
           * Note: No need to synchronize, since we don't make any sort
           * of guarantee about ==, and it's okay to overwrite existing
           * entries too.
           */
          int idx = (value & 0x7fffffff) % cache.length;
          CstInteger obj = cache[idx];
  
          if ((obj != null) && (obj.getValue() == value)) {
              return obj;
          }
  
          obj = new CstInteger(value);
          cache[idx] = obj;
          return obj;
      }
  
      /**
       * Constructs an instance. This constructor is private; use {@link #make}.
       *
       * @param value the {@code int} value
       */
      private CstInteger(int value) {
          super(value);
      }
  
      /** {@inheritDoc} */
      @Override
      public String toString() {
          int value = getIntBits();
          return "int{0x" + Hex.u4(value) + " / " + value + '}';
      }
  
      /** {@inheritDoc} */
      public Type getType() {
          return Type.INT;
      }
  
      /** {@inheritDoc} */
      @Override
      public String typeName() {
          return "int";
      }
  
      /** {@inheritDoc} */
      public String toHuman() {
          return Integer.toString(getIntBits());
      }
  
      /**
       * Gets the {@code int} value.
       *
       * @return the value
       */
      public int getValue() {
          return getIntBits();
      }
  }
  