cetus.hir

Class BinaryExpression

java.lang.Object

cetus.hir.Expression

cetus.hir.BinaryExpression

All Implemented Interfaces:

Printable, Traversable, java.lang.Cloneable, java.lang.Comparable<Expression>

Direct Known Subclasses:

AccessExpression, AssignmentExpression

public class BinaryExpression
extends Expression

BinaryExpression represents an expression having a LHS operand, an operator, and a RHS operand.

Constructor Summary

Constructors

Constructor and Description
BinaryExpression(Expression lhs, BinaryOperator op, Expression rhs) Creates a binary expression.

Method Summary

Methods

Modifier and Type	Method and Description
BinaryExpression	clone() Returns a clone of the binary expression
static void	defaultPrint(BinaryExpression e, java.io.PrintWriter o) Prints a binary expression to a stream.
boolean	equals(java.lang.Object o) Compares the binary expression with the specified object.
Expression	getLHS() Returns the lefthand expression.
BinaryOperator	getOperator() Returns the operator of the expression.
Expression	getRHS() Returns the righthand expression.
static void	setClassPrintMethod(java.lang.reflect.Method m) Overrides the class print method, so that all subsequently created objects will use the supplied method.
void	setLHS(Expression expr) Sets the lefthand expression.
void	setOperator(BinaryOperator op) Sets the operator for the expression.
void	setRHS(Expression expr) Sets the righthand expression.
java.lang.String	toString() Returns a string representation of the binary expression.

Methods inherited from class cetus.hir.Expression

compareTo, findExpression, getChildren, getParent, getStatement, hashCode, needsParens, print, printSelf, removeChild, setChild, setParens, setParent, setPrintMethod, swapWith, verify

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

BinaryExpression

public BinaryExpression(Expression lhs,
                BinaryOperator op,
                Expression rhs)

Creates a binary expression.

Parameters:

lhs - The lefthand expression.

op - A binary operator.

rhs - The righthand expression.

Throws:

NotAnOrphanException - if lhs or rhs has a parent object.

Method Detail

clone

public BinaryExpression clone()

Returns a clone of the binary expression

Overrides:

clone in class Expression

Returns:

a deep copy of this expression.

defaultPrint

public static void defaultPrint(BinaryExpression e,
                java.io.PrintWriter o)

Prints a binary expression to a stream.

Parameters:

e - The expression to print.

o - The writer on which to print the expression.

toString

public java.lang.String toString()

Returns a string representation of the binary expression. The returned string is equivalent to the printed stream through defaultPrint(cetus.hir.BinaryExpression, java.io.PrintWriter).

Overrides:

toString in class Expression

Returns:

the string representation.

getLHS

public Expression getLHS()

Returns the lefthand expression.

Returns:

the lefthand expression.

getOperator

public BinaryOperator getOperator()

Returns the operator of the expression.

Returns:

the operator.

getRHS

public Expression getRHS()

Returns the righthand expression.

Returns:

the righthand expression.

setClassPrintMethod

public static void setClassPrintMethod(java.lang.reflect.Method m)

Overrides the class print method, so that all subsequently created objects will use the supplied method.

Parameters:

m - The new print method.

setLHS

public void setLHS(Expression expr)

Sets the lefthand expression.

Parameters:

expr - The new lefthand expression. It must not be the child of another expression or null.

Throws:

java.lang.IllegalArgumentException - if expr is null.

NotAnOrphanException - if expr has a parent object.

setOperator

public void setOperator(BinaryOperator op)

Sets the operator for the expression.

Parameters:

op - The operator.

setRHS

public void setRHS(Expression expr)

Sets the righthand expression.

Parameters:

expr - The new righthand expression. It must not be the child of another expression.

Throws:

java.lang.IllegalArgumentException - if expr is null.

NotAnOrphanException - if expr has a parent object.

equals

public boolean equals(java.lang.Object o)

Compares the binary expression with the specified object.

Overrides:

equals in class Expression

Parameters:

o - the object to be compared with.

Returns:

true if their childrens are equal and their operator is equal.