io.noties.prism4j

Class GrammarUtils

java.lang.Object

io.noties.prism4j.GrammarUtils

public abstract class GrammarUtils
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	GrammarUtils.TokenFilter Used when extending an existing grammar to filter out tokens that should not be cloned.

Method Summary

Modifier and Type	Method and Description
static Prism4j.Grammar	clone(Prism4j.Grammar grammar)
static Prism4j.Pattern	clone(Prism4j.Pattern pattern)
static Prism4j.Token	clone(Prism4j.Token token)
static Prism4j.Grammar	extend(Prism4j.Grammar grammar, java.lang.String name, GrammarUtils.TokenFilter filter, Prism4j.Token... tokens)
static Prism4j.Grammar	extend(Prism4j.Grammar grammar, java.lang.String name, Prism4j.Token... tokens)
static Prism4j.Grammar	findFirstInsideGrammar(Prism4j.Token token)
static Prism4j.Token	findToken(Prism4j.Grammar grammar, java.lang.String path) Helper method to find a token inside grammar.
static void	insertBeforeToken(Prism4j.Grammar grammar, java.lang.String path, Prism4j.Token... tokens)
static Prism4j.Grammar	require(Prism4j prism4j, java.lang.String name)

Methods inherited from class java.lang.Object

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

Method Detail

findToken

public static Prism4j.Token findToken(Prism4j.Grammar grammar,
                                      java.lang.String path)

Helper method to find a token inside grammar. Supports lookup in `inside` grammars. For example given the path: first-token/then-another/and-more this method will do:

• Look for `first-token` at root level of supplied grammar
• If it\'s found search for first pattern with `inside` grammar
• If it\'s found search for `then-another` token in this inside grammar
• etc

Simple path simple-root-level is also supported

Parameters:

grammar - Prism4j.Grammar

path - argument to find a Prism4j.Token

Returns:

a found Prism4j.Token or null

insertBeforeToken

public static void insertBeforeToken(Prism4j.Grammar grammar,
                                     java.lang.String path,
                                     Prism4j.Token... tokens)

findFirstInsideGrammar

public static Prism4j.Grammar findFirstInsideGrammar(Prism4j.Token token)

clone

public static Prism4j.Grammar clone(Prism4j.Grammar grammar)

clone

public static Prism4j.Token clone(Prism4j.Token token)

clone

public static Prism4j.Pattern clone(Prism4j.Pattern pattern)

extend

public static Prism4j.Grammar extend(Prism4j.Grammar grammar,
                                     java.lang.String name,
                                     Prism4j.Token... tokens)

extend

public static Prism4j.Grammar extend(Prism4j.Grammar grammar,
                                     java.lang.String name,
                                     GrammarUtils.TokenFilter filter,
                                     Prism4j.Token... tokens)

require

public static Prism4j.Grammar require(Prism4j prism4j,
                                      java.lang.String name)