org.serversass.ast

Class ValueList

java.lang.Object

org.serversass.ast.ValueList

All Implemented Interfaces:

Expression

public class ValueList
extends Object
implements Expression

Represents a list of values.

Constructor Summary

Constructors

Constructor and Description
ValueList(boolean keepCommas) Creates a new and empty value list

Method Summary

Modifier and Type	Method and Description
void	add(Expression element) Adds the given element to the list.
Expression	eval(Scope scope, Generator gen) If possible the expression is evaluated and a simplified expression is returned.
List<Expression>	getElements() Returns the contents of the value list.
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

ValueList

public ValueList(boolean keepCommas)

Creates a new and empty value list

Parameters:

keepCommas - determines if commas are kept in the output or not

Method Detail

toString

public String toString()

Overrides:

toString in class Object

add

public void add(Expression element)

Adds the given element to the list.

Parameters:

element - the element to add

getElements

public List<Expression> getElements()

Returns the contents of the value list.

Returns:

a list of all elements in the value list

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