harpoon.IR.Tree
Class JUMP

java.lang.Object
  harpoon.IR.Tree.Tree
      harpoon.IR.Tree.Stm
          harpoon.IR.Tree.JUMP

All Implemented Interfaces:

HCodeElement

public class JUMP
extends Stm

JUMP objects are statements which stand for unconditional computed branches.

Version:

$Id: JUMP.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

LabelList

targets A list of possible branch targets.

Fields inherited from class harpoon.IR.Tree.Tree

arrayFactory, child

Constructor Summary

JUMP(TreeFactory tf, HCodeElement source, Exp exp, LabelList targets)
Full constructor.

JUMP(TreeFactory tf, HCodeElement source, Label target)
Abbreviated constructor for a non-computed branch.

Method Summary

void	accept(TreeVisitor v) Accept a visitor
Stm	build(TreeFactory tf, ExpList kids)
Exp	getExp() Returns an expression giving the address to jump to.
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	setExp(Exp exp) Set the expression giving the address to jump to.
String	toString()

Methods inherited from class harpoon.IR.Tree.Stm

build, isNop, linearize, toStm

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

Field Detail

targets

public final LabelList targets

A list of possible branch targets.

Constructor Detail

JUMP

public JUMP(TreeFactory tf,
            HCodeElement source,
            Exp exp,
            LabelList targets)

Full constructor.

JUMP

public JUMP(TreeFactory tf,
            HCodeElement source,
            Label target)

Abbreviated constructor for a non-computed branch.

Method Detail

getExp

public Exp getExp()

Returns an expression giving the address to jump to.

setExp

public void setExp(Exp exp)

Set the expression giving the address to jump to.

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 Stm build(TreeFactory tf,
                 ExpList kids)

Specified by:

build in class Stm

accept

public void accept(TreeVisitor v)

Accept a visitor

Specified by:

accept in class Tree

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