Class CheckExpr

java.lang.Object

EDU.purdue.cs.bloat.tree.Node

EDU.purdue.cs.bloat.tree.Expr

EDU.purdue.cs.bloat.tree.CheckExpr

All Implemented Interfaces:

Cloneable

Direct Known Subclasses:

RCExpr, UCExpr, ZeroCheckExpr

public abstract class CheckExpr
extends Expr

CheckExpr is a superclass for classes representing a check on an expression. For instance, a CheckExpr is inserted into the tree before the divisor of a divide operation. The CheckExpr checks to make sure that the divisor is not zero.

See Also:

• RCExpr
• UCExpr
• ZeroCheckExpr

Field Summary

Fields inherited from class Expr

type

Fields inherited from class Node

parent

Constructor Summary

Constructors

Constructor	Description
CheckExpr(Expr expr, Type type)	Constructor.

Method Summary

Modifier and Type	Method	Description
boolean	equalsExpr(Expr other)	Compares this expression to another.
Expr	expr()	Returns the expression being checked.
int	exprHashCode()	Returns the hash code for this expresion.
void	visitForceChildren(TreeVisitor visitor)	Visit the children of this node.

Methods inherited from class Expr

cleanupOnly, clone, comparator, copyInto, def, isDef, setDef, setType, stmt, type

Methods inherited from class Node

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

Methods inherited from class Object

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

Constructor Details

CheckExpr

public CheckExpr(Expr expr,
 Type type)

Constructor.

Parameters:

expr - An expression that is to be checked.

type - The type of this expression.

Method Details

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

expr

public Expr expr()

Returns the expression being checked.

exprHashCode

public int exprHashCode()

Description copied from class: Expr

Returns the hash code for this expresion.

Specified by:

exprHashCode in class Expr

equalsExpr

public boolean equalsExpr(Expr other)

Description copied from class: Expr

Compares this expression to another.

Specified by:

equalsExpr in class Expr

Parameters:

other - Expr to which to compare this.