net.obvj.jep.functions

Class UnaryBooleanFunction

java.lang.Object

org.nfunk.jep.function.PostfixMathCommand

net.obvj.jep.functions.UnaryBooleanFunction

All Implemented Interfaces:

MultiStrategyCommand, org.nfunk.jep.function.PostfixMathCommandI

public class UnaryBooleanFunction
extends org.nfunk.jep.function.PostfixMathCommand
implements MultiStrategyCommand

An "abstract" function that accepts one object as argument and returns a boolean value, represented as 1 (true) or 0 (false).

The actual concrete implementation defined is by UnaryBooleanFunction.Strategy.

Author:

oswaldo.bapvic.jr

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	UnaryBooleanFunction.Strategy Defines particular object predicates for the UnaryBooleanFunction.

Constructor Summary

Constructors

Constructor and Description
UnaryBooleanFunction(UnaryBooleanFunction.Strategy strategy) Builds this custom command with a fixed number of 1 parameter.

Method Summary

Modifier and Type	Method and Description
Object	getStrategy()
void	run(Stack stack)

Methods inherited from class org.nfunk.jep.function.PostfixMathCommand

checkNumberOfParameters, getNumberOfParameters, setCurNumberOfParameters

Methods inherited from class java.lang.Object

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

Constructor Detail

UnaryBooleanFunction

public UnaryBooleanFunction(UnaryBooleanFunction.Strategy strategy)

Builds this custom command with a fixed number of 1 parameter.

Parameters:

strategy - the UnaryBooleanFunction.Strategy to be set

Method Detail

run

public void run(Stack stack)
         throws org.nfunk.jep.ParseException

Specified by:

run in interface org.nfunk.jep.function.PostfixMathCommandI

Overrides:

run in class org.nfunk.jep.function.PostfixMathCommand

Throws:

org.nfunk.jep.ParseException

See Also:

Comparative.run(java.util.Stack)

getStrategy

public Object getStrategy()

Specified by:

getStrategy in interface MultiStrategyCommand

Returns:

the strategy assigned to a command instance, for testing purposes