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.code;
  
  import com.taobao.android.dx.rop.cst.Constant;
  
  /**
   * Instruction which contains an explicit reference to a constant.
   */
  public abstract class CstInsn
          extends Insn {
      /** {@code non-null;} the constant */
      private final Constant cst;
  
      /**
       * Constructs an instance.
       *
       * @param opcode {@code non-null;} the opcode
       * @param position {@code non-null;} source position
       * @param result {@code null-ok;} spec for the result, if any
       * @param sources {@code non-null;} specs for all the sources
       * @param cst {@code non-null;} constant
       */
      public CstInsn(Rop opcode, SourcePosition position, RegisterSpec result,
                     RegisterSpecList sources, Constant cst) {
          super(opcode, position, result, sources);
  
          if (cst == null) {
              throw new NullPointerException("cst == null");
          }
  
          this.cst = cst;
      }
  
      /** {@inheritDoc} */
      @Override
      public String getInlineString() {
          return cst.toHuman();
      }
  
      /**
       * Gets the constant.
       *
       * @return {@code non-null;} the constant
       */
      public Constant getConstant() {
          return cst;
      }
  
      /** {@inheritDoc} */
      @Override
      public boolean contentEquals(Insn b) {
          /*
           * The cast (CstInsn)b below should always succeed since
           * Insn.contentEquals compares classes of this and b.
           */
          return super.contentEquals(b)
                  && cst.equals(((CstInsn)b).getConstant());
      }
  }
  