harpoon.IR.Tree
Class BINOP

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

All Implemented Interfaces:

HCodeElement, Typed

public class BINOP
extends OPER

BINOP objects are expressions which stand for result of applying some binary operator o to a pair of subexpressions.

Version:

$Id: BINOP.java,v 1.5 2003/10/20 04:26:37 cananian Exp $

Author:

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

See Also:

Bop

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

BINOP(TreeFactory tf, HCodeElement source, int optype, int binop, Exp left, Exp right)
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, Object right) Evaluates a constant value for the result of a BINOP, given constant values for the operands.
Exp	getLeft() Returns the subexpression of the left-hand side of the operator.
Exp	getRight() Returns the subexpression of the right-hand side of the operator.
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	setLeft(Exp left) Sets the subexpression of the left-hand side of the operator.
void	setRight(Exp right) Sets the subexpression of the right-hand side of the operator.
String	toString()
int	type() Return result type.

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

BINOP

public BINOP(TreeFactory tf,
             HCodeElement source,
             int optype,
             int binop,
             Exp left,
             Exp right)

Constructor.

Parameters:

binop - Enumerated operation type, from Bop.

Method Detail

type

public int type()

Description copied from class: OPER

Return result type.

Specified by:

type in interface Typed

Specified by:

type in class OPER

getLeft

public Exp getLeft()

Returns the subexpression of the left-hand side of the operator.

getRight

public Exp getRight()

Returns the subexpression of the right-hand side of the operator.

setLeft

public void setLeft(Exp left)

Sets the subexpression of the left-hand side of the operator.

setRight

public void setRight(Exp right)

Sets the subexpression of the right-hand side of the operator.

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

evalValue

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

Evaluates a constant value for the result of a BINOP, given constant values for the operands.

toString

public String toString()

Overrides:

toString in class Object