harpoon.IR.Tree
Class UNOP

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

All Implemented Interfaces:

HCodeElement, Typed

public class UNOP
extends OPER

UNOP objects are expressions which stand for result of applying some unary operator o to a subexpression.

Version:

$Id: UNOP.java,v 1.4 2002/04/10 03:05:46 cananian Exp $

Author:

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

See Also:

Uop

Nested Class Summary

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

Tree.CloneCallback

Field Summary

Fields inherited from class harpoon.IR.Tree.OPER

op, optype

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

UNOP(TreeFactory tf, HCodeElement source, int optype, int unop, Exp operand)
Constructor.

Method Summary

void	accept(TreeVisitor v) Accept a visitor
Exp	build(TreeFactory tf, ExpList kids)
static Object	evalValue(TreeFactory tf, int op, int optype, Object left)
Exp	getOperand() Returns the subexpression to be operated upon.
int	kind() Return an integer enumeration of the kind of this Tree.
Tree	rename(TreeFactory tf, TempMap tm, Tree.CloneCallback cb) Rename while cloning a subtree.
void	setOperand(Exp operand) Sets the subexpression to be operated upon.
String	toString()
int	type() Returns an int identifying the TYPE that this unary operation returns.

Methods inherited from class harpoon.IR.Tree.OPER

operandType

Methods inherited from class harpoon.IR.Tree.Exp

build, isDoubleWord, isFloatingPoint

Methods inherited from class harpoon.IR.Tree.Tree

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

Methods inherited from class java.lang.Object

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

Constructor Detail

UNOP

public UNOP(TreeFactory tf,
            HCodeElement source,
            int optype,
            int unop,
            Exp operand)

Constructor.

Parameters:

unop - Enumerated operation type, from Uop.

Method Detail

getOperand

public Exp getOperand()

Returns the subexpression to be operated upon.

setOperand

public void setOperand(Exp operand)

Sets the subexpression to be operated upon.

type

public int type()

Returns an int identifying the TYPE that this unary operation returns.

Specified by:

type in interface Typed

Specified by:

type in class OPER

See Also:

Uop

evalValue

public static Object evalValue(TreeFactory tf,
                               int op,
                               int optype,
                               Object left)

kind

public int kind()

Description copied from class: Tree

Return an integer enumeration of the kind of this Tree. The enumerated values are defined in TreeKind.

Specified by:

kind in class Tree

build

public Exp build(TreeFactory tf,
                 ExpList kids)

Specified by:

build in class Exp

accept

public void accept(TreeVisitor v)

Accept a visitor

Overrides:

accept in class OPER

rename

public Tree rename(TreeFactory tf,
                   TempMap tm,
                   Tree.CloneCallback cb)

Description copied from class: Tree

Rename while cloning a subtree. This node and all child nodes are cloned; the 'temp' information of all TEMP nodes are renamed according to the supplied TempMap. Note that Temps not belonging to this.getFactory().tempFactory() are not affected. The callback() method of the supplied CloneCallback is invoked once on each subtree cloned, starting from the leaves and working back to the root in a post-order depth-first manner.

Specified by:

rename in class Tree

toString

public String toString()

Overrides:

toString in class Object