store.java

来自「一种将c高级语言转化给VHDL的编译器」· Java 代码 · 共 92 行

/*
 *
 LA-CC 05-135 Trident 0.7.1

Copyright Notice
Copyright 2006 (c) the Regents of the University of California.

This Software was produced under a U.S. Government contract
(W-7405-ENG-36) by Los Alamos National Laboratory, which is operated
by the University of California for the U.S. Department of Energy. The
U.S. Government is licensed to use, reproduce, and distribute this
Software. Permission is granted to the public to copy and use this
Software without charge, provided that this Notice and any statement
of authorship are reproduced on all copies. Neither the Government nor
the University makes any warranty, express or implied, or assumes any
liability or responsibility for the user of this Software.


 */


package fp.flowgraph;

import fp.util.BooleanEquation;

public class Store extends InstructionFormat {

  public static boolean conforms(Instruction i) {
    return conforms(i.operator);
  }

   public static boolean conforms(Operator op) {
    return op.format == Store_format;
  }

    
  public static Operand getDestination(Instruction i) {
    return i.getOperand(0);
  }

  public static void setDestination(Instruction i, Operand result) {
    i.putOperand(0, result);
  }

  public static boolean hasDestination(Instruction i) {
    return i.getOperand(0) != null;
  }

  public static Operand getValue(Instruction i) {
    return i.getOperand(1);
  }

  public static void setValue(Instruction i, Operand source) {
    i.putOperand(1, source);
  }

  public static boolean hasValue(Instruction i) {
    return i.getOperand(1) != null;
  }

  public static Instruction create(Operator o, Type type,
				   Operand destination,
				   Operand value) {
    return Store.create(o, type, destination, value, null);
  }

  public static Instruction create(Operator o, Type type,
				   Operand destination,
				   Operand value, BooleanEquation eq) {
    Instruction i = new Instruction(o, type, eq);
    i.putOperand(0, destination);
    i.putOperand(1, value);
    return i;
  }
 
  public static void verify(Instruction i) throws IllegalOperand {
    if (!hasDestination(i)) {
      throw new IllegalOperand("Store instruction does not have a destination operand.");
    }
    if (!hasValue(i)) {
      throw new IllegalOperand("Store instruction does not have a source operand.");
    }
    if (!(getDestination(i).isPrimal() || getDestination(i).isAddr())) {
      throw new IllegalOperand("Store instruction destination operand " + getDestination(i).getName() + " is not primal or address operand.");
    }
    if (!getValue(i).isFirstClassOperand()) {
      throw new IllegalOperand("Store instruction source operand " + getValue(i).getName() + " must be first class operand.");
    }
  }

}