harpoon.IR.Tree
Class OPER

java.lang.Object
  harpoon.IR.Tree.Tree
      harpoon.IR.Tree.Exp
          harpoon.IR.Tree.OPER

All Implemented Interfaces:

HCodeElement, Typed

Direct Known Subclasses:

BINOP, UNOP

public abstract class OPER
extends Exp

OPER objects are expressions which stand for the result of applying some operator to subexpressions.

Version:

$Id: OPER.java,v 1.4 2002/04/10 03:05:45 cananian Exp $

Author:

C. Scott Ananian <cananian@alumni.princeton.edu>, based on Modern Compiler Implementation in Java by Andrew Appel.

Nested Class Summary

Nested classes/interfaces inherited from class harpoon.IR.Tree.Tree

Tree.CloneCallback

Field Summary

int	op An enumerated type encoding the operator.
int	optype Type of the operands (not necessarily the result type).

Fields inherited from class harpoon.IR.Tree.Tree

arrayFactory, child

Fields inherited from interface harpoon.IR.Tree.Typed

DOUBLE, FLOAT, INT, LONG, POINTER

Constructor Summary

OPER(TreeFactory tf, HCodeElement source, int optype, int op, int arity)

Method Summary

void	accept(TreeVisitor v) Accept a visitor
int	operandType() Return type of operands (not necessarily the result type).
abstract int	type() Return result type.

Methods inherited from class harpoon.IR.Tree.Exp

build, build, isDoubleWord, isFloatingPoint

Methods inherited from class harpoon.IR.Tree.Tree

clone, clone, getChild, getFactory, getFirstChild, getID, getLineNumber, getParent, getSibling, getSourceFile, hashCode, kids, kind, rename, rename, replace, setChild, unlink

Methods inherited from class java.lang.Object

equals, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

op

public final int op

An enumerated type encoding the operator.

See Also:

Bop, Uop

optype

public final int optype

Type of the operands (not necessarily the result type).

Constructor Detail

OPER

public OPER(TreeFactory tf,
            HCodeElement source,
            int optype,
            int op,
            int arity)

Method Detail

accept

public void accept(TreeVisitor v)

Accept a visitor

Specified by:

accept in class Tree

type

public abstract int type()

Return result type.

Specified by:

type in interface Typed

Specified by:

type in class Exp

operandType

public int operandType()

Return type of operands (not necessarily the result type).