code: /**
   * Copyright (c) 2004-2005, Regents of the University of California
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * Redistributions of source code must retain the above copyright notice,
   * this list of conditions and the following disclaimer.
   *
   * Redistributions in binary form must reproduce the above copyright
   * notice, this list of conditions and the following disclaimer in the
   * documentation and/or other materials provided with the distribution.
   *
   * Neither the name of the University of California, Los Angeles nor the
   * names of its contributors may be used to endorse or promote products
   * derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  package jintgen.isdl;
  
  import cck.text.StringUtil;
  import cck.util.Util;
  import jintgen.isdl.parser.Token;
  import jintgen.jigir.CodeRegion;
  import jintgen.jigir.Stmt;
  import java.util.List;
  
  /**
   * The <code>InstrDecl</code> class represents the declaration of an instruction in an instruction set
   * description language file. It include a description of the encoding format of the instruction as well as a
   * block of IR code that describe how to execute the instruction.
   *
   * @author Ben L. Titzer
   */
  public class InstrDecl extends Item {
  
      public final AddrModeUse addrMode;
  
      public final String className;
  
      public final String innerClassName;
  
      public final CodeRegion code;
  
      public final boolean pseudo;
  
      private int size = -1;
  
      /**
       * The constructor of the <code>InstrDecl</code> class initializes the fields based on the parameters.
       *
       * @param n the name of the instruction as a string
       */
      public InstrDecl(boolean ps, Token n, AddrModeUse am, List<Property> pl, List<Stmt> s) {
          super(n);
          code = new CodeRegion(s);
          pseudo = ps;
          addrMode = am;
          for ( Property p : pl ) addProperty(p);
          innerClassName = makeInnerClassName(name);
          className = "Instr." + innerClassName;
      }
  
      private String makeInnerClassName(Token str) {
          String bare = StringUtil.trimquotes(str.image).toUpperCase();
          return bare.replace(".", "_");
      }
  
      public int getEncodingSize() {
          if ( size <= 0 )
              throw Util.failure("size for instruction "+name+" has not been computed");
          return size;
      }
  
      public String getClassName() {
          return className;
      }
  
      public String getInnerClassName() {
          return innerClassName;
      }
  
      public int getCycles() {
          Property p = getProperty("cycles");
          if ( p == null ) return 1;
          else return StringUtil.evaluateIntegerLiteral(p.value.image);
      }
  
      public List<AddrModeDecl.Operand> getOperands() {
          return addrMode.operands;
      }
  }
  