org.expressionj.util

Class ExpressionSimplifier

java.lang.Object

org.expressionj.util.ExpressionSimplifier

public class ExpressionSimplifier
extends java.lang.Object

This class allows to simplify an Expression.

Constructor Summary

Constructors

Constructor and Description
ExpressionSimplifier()

Method Summary

Modifier and Type	Method and Description
Expression	simplify(Expression expr) Simplify an expression.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionSimplifier

public ExpressionSimplifier()

Method Detail

simplify

public Expression simplify(Expression expr)

Simplify an expression. The simplification will follow these rules fo each part of the expression (recursively):

• An operation with two will produce one constant which will be the result of the operation
• Multiplying an expression with 0 will return 0
• Adding or substracting an expression with 0 will return the expression
• Performing OR with an expression and true will return true
• Performing AND with an expression and false will return false

Parameters:

expr - the expression.

Returns:

the simplified expression