org.openstreetmap.josm.gui.mappaint.mapcss

Class ExpressionFactory.LengthFunction

java.lang.Object

org.openstreetmap.josm.gui.mappaint.mapcss.ExpressionFactory.LengthFunction

All Implemented Interfaces:

Expression

Enclosing class:

ExpressionFactory

public static class ExpressionFactory.LengthFunction
extends java.lang.Object
implements Expression

Function to calculate the length of a string or list in a MapCSS eval expression. Separate implementation to support overloading for different argument types. The use for calculating the length of a list is deprecated, use Functions.count(java.util.List) instead (see #10061).

Field Summary

Fields

Modifier and Type	Field and Description
private Expression	arg

Constructor Summary

Constructors

Constructor and Description
LengthFunction(Expression args) Constructs a new LengthFunction.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	evaluate(Environment env) Evaluate this expression.

Methods inherited from class java.lang.Object

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

Field Detail

arg

private final Expression arg

Constructor Detail

LengthFunction

public LengthFunction(Expression args)

Constructs a new LengthFunction.

Parameters:

args - arguments

Method Detail

evaluate

public java.lang.Object evaluate(Environment env)

Description copied from interface: Expression

Evaluate this expression.

Specified by:

evaluate in interface Expression

Parameters:

env - The environment

Returns:

the result of the evaluation, can be a List, String or any primitive type or wrapper classes of a primitive type.