org.serversass.ast

Class VariableReference

java.lang.Object

org.serversass.ast.VariableReference

All Implemented Interfaces:

Expression

public class VariableReference
extends Object
implements Expression

References a variable like "$test".

Constructor Summary

Constructors

Constructor and Description
VariableReference(String name) Creates a new reference for the given variable.

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.
String	getName() Returns the name of the variable.
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

VariableReference

public VariableReference(String name)

Creates a new reference for the given variable.

Parameters:

name - the name of the variable to reference (without $).

Method Detail

getName

public String getName()

Returns the name of the variable.

Returns:

the name of the variable (without $)

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