Package org.openstreetmap.josm.gui.mappaint.mapcss

Class PlaceholderExpression

java.lang.Object

org.openstreetmap.josm.gui.mappaint.mapcss.PlaceholderExpression

All Implemented Interfaces:

Expression

public final class PlaceholderExpression
extends java.lang.Object
implements Expression

Used for expressions that contain placeholders

Since:

18758

Field Summary

Fields

Modifier and Type	Field	Description
static java.util.regex.Pattern	PATTERN_PLACEHOLDER	The regex used for pattern replacement
private java.lang.String	placeholder

Constructor Summary

Constructors

Constructor	Description
PlaceholderExpression(java.lang.String placeholder)	Constructs a new PlaceholderExpression.

Method Summary

Modifier and Type	Method	Description
private static java.lang.String	determineArgument(Selector matchingSelector, int index, java.lang.String type, Tagged p)	Determines the index-th key/value/tag (depending on type) of the Selector.
java.lang.Object	evaluate(Environment env)	Evaluate this expression.
static java.lang.String	insertArguments(Selector matchingSelector, java.lang.String s, Tagged p)	Replaces occurrences of {i.key}, {i.value}, {i.tag} in s by the corresponding key/value/tag of the index-th Condition of matchingSelector.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

PATTERN_PLACEHOLDER

public static final java.util.regex.Pattern PATTERN_PLACEHOLDER

The regex used for pattern replacement

placeholder

private final java.lang.String placeholder

Constructor Detail

PlaceholderExpression

public PlaceholderExpression(java.lang.String placeholder)

Constructs a new PlaceholderExpression.

Parameters:

placeholder - The placeholder expression

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.

insertArguments

public static java.lang.String insertArguments(Selector matchingSelector,
                                               java.lang.String s,
                                               Tagged p)

Replaces occurrences of {i.key}, {i.value}, {i.tag} in s by the corresponding key/value/tag of the index-th Condition of matchingSelector.

Parameters:

matchingSelector - matching selector

s - any string

p - OSM primitive

Returns:

string with arguments inserted

determineArgument

private static java.lang.String determineArgument(Selector matchingSelector,
                                                  int index,
                                                  java.lang.String type,
                                                  Tagged p)

Determines the index-th key/value/tag (depending on type) of the Selector.

Parameters:

matchingSelector - matching selector

index - index

type - selector type ("key", "value" or "tag")

p - OSM primitive

Returns:

argument value, can be null

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object