org.serversass.ast

Class NamedParameter

java.lang.Object

org.serversass.ast.NamedParameter

All Implemented Interfaces:

Expression

public class NamedParameter
extends Object
implements Expression

Represents a named parameter of a function call.

This is only used if the parameter is referenced by name - which is not supported by built-in functions.

Constructor Summary

Constructors

Constructor and Description
NamedParameter(String name, Expression value) Creates a new parameter for the given name and value.

Method Summary

Modifier and Type	Method and Description
Expression	eval(Scope scope, Generator gen) If possible the expression is evaluated and a simplified expression is returned.
boolean	isConstant() Determines if this expression is constant or if it depends on variables.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

NamedParameter

public NamedParameter(String name,
                      Expression value)

Creates a new parameter for the given name and value.

Parameters:

name - th name of the parameter.

value - the value to be used for the parameter

Method Detail

toString

public String toString()

Overrides:

toString in class Object

isConstant

public boolean isConstant()

Description copied from interface: Expression

Determines if this expression is constant or if it depends on variables.

Specified by:

isConstant in interface Expression

Returns:

true if the expression is constant, false otherwise

eval

public Expression eval(Scope scope,
                       Generator gen)

Description copied from interface: Expression

If possible the expression is evaluated and a simplified expression is returned.

Specified by:

eval in interface Expression

Parameters:

scope - the scope used to resolve variables.

gen - the generator used to evaluate functions

Returns:

a possibly simplified version of the expression