de.vandermeer.skb.interfaces.antlr

Interface Antlr_To_Column

All Superinterfaces:

CategoryIs, Function<Object,Integer>, IsTransformer<Object,Integer>, Transformer<Object,Integer>

public interface Antlr_To_Column
extends IsTransformer<Object,Integer>

A transformer that takes an ANTLR runtime object and returns an integer for the column (of the first token).

Since:

v0.0.1

Version:

v0.0.1 build 170404 (04-Apr-17) for Java 1.8

Author:

Sven van der Meer <vdmeer.sven@mykolab.com>

Method Summary

Modifier and Type	Method and Description
static Antlr_To_Column	create() Creates a transformer that takes an object and returns an Integer with column information for ANTLR runtime objects.
default Integer	transform(Object obj) Transforms from one representation to another.

Methods inherited from interface Transformer

apply, transform

Methods inherited from interface Function

andThen, compose, identity

Method Detail

transform

default Integer transform(Object obj)

Description copied from interface: Transformer

Transforms from one representation to another.

Specified by:

transform in interface Transformer<Object,Integer>

Parameters:

obj - input representation

Returns:

output representation or null if input was null or unexpected class

create

static Antlr_To_Column create()

Creates a transformer that takes an object and returns an Integer with column information for ANTLR runtime objects. The returned transformer will throw runtime exceptions (null pointer, illegal argument) if the given object was not an ANTLR runtime object. The transformer returns column information for ANTLR classes RecognitionException, Token, ParserRuleContext and TerminalNode or -1 as default.

Returns:

new transformer