Class IfZeroStmt

java.lang.Object

EDU.purdue.cs.bloat.tree.Node

EDU.purdue.cs.bloat.tree.Stmt

EDU.purdue.cs.bloat.tree.JumpStmt

EDU.purdue.cs.bloat.tree.IfStmt

EDU.purdue.cs.bloat.tree.IfZeroStmt

public class IfZeroStmt
extends IfStmt

IfZeroStmt evaluates an expression and executes one of its two branches depending on whether or not the expression evaluated to zero.

Field Summary

Fields inherited from class IfStmt

EQ, GE, GT, LE, LT, NE

Fields inherited from class Node

parent

Constructor Summary

Constructors

Constructor	Description
IfZeroStmt(int comparison, Expr expr, Block trueTarget, Block falseTarget)	Constructor.

Method Summary

Modifier and Type	Method	Description
Object	clone()
Expr	expr()
void	visit(TreeVisitor visitor)
void	visitForceChildren(TreeVisitor visitor)	Visit the children of this node.

Methods inherited from class IfStmt

comparison, falseTarget, negate, setFalseTarget, setTrueTarget, trueTarget

Methods inherited from class JumpStmt

catchTargets, copyInto

Methods inherited from class Stmt

cleanupOnly

Methods inherited from class Node

block, cleanup, hasParent, key, parent, replaceWith, replaceWith, setKey, setParent, setValueNumber, toString, valueNumber, visitChildren, visitOnly

Methods inherited from class Object

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

Constructor Details

IfZeroStmt

public IfZeroStmt(int comparison,
 Expr expr,
 Block trueTarget,
 Block falseTarget)

Constructor.

Parameters:

comparison - Comparison operator.

expr - An expression to be evaluated.

trueTarget - Basic Block that is executed if the expression evaluates to zero.

falseTarget - Basic Block that is executed if the expression evaluates to non-zero.

Method Details

expr

public Expr expr()

Returns:

The expression that is evaluated.

visitForceChildren

public void visitForceChildren(TreeVisitor visitor)

Description copied from class: Node

Visit the children of this node. Not all Nodes will have children to visit.

Specified by:

visitForceChildren in class Node

visit

public void visit(TreeVisitor visitor)

Specified by:

visit in class Node

clone

public Object clone()

Specified by:

clone in class Stmt