org.graalvm.shadowed.org.antlr.v4.runtime.atn

Class ATNSerializer

java.lang.Object

org.graalvm.shadowed.org.antlr.v4.runtime.atn.ATNSerializer

public class ATNSerializer
extends Object

This class represents a target neutral serializer for ATNs. An ATN is converted to a list of integers that can be converted back to and ATN. We compute the list of integers and then generate an array into the target language for a particular lexer or parser. Java is a special case where we must generate strings instead of arrays, but that is handled outside of this class. See ATNDeserializer.encodeIntsWith16BitWords(IntegerList) and org.antlr.v4.codegen.model.SerializedJavaATN.

Field Summary

Fields

Modifier and Type	Field and Description
ATN	atn

Constructor Summary

Constructors

Constructor and Description
ATNSerializer(ATN atn)

Method Summary

Modifier and Type	Method and Description
static IntegerList	getSerialized(ATN atn)
IntegerList	serialize() Serialize state descriptors, edge descriptors, and decision→state map into list of ints.

Methods inherited from class java.lang.Object

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

Field Detail

atn

public ATN atn

Constructor Detail

ATNSerializer

public ATNSerializer(ATN atn)

Method Detail

serialize

public IntegerList serialize()

Serialize state descriptors, edge descriptors, and decision→state map into list of ints. Likely out of date, but keeping as it could be helpful: SERIALIZED_VERSION UUID (2 longs) grammar-type, (ANTLRParser.LEXER, ...) max token type, num states, state-0-type ruleIndex, state-1-type ruleIndex, ... state-i-type ruleIndex optional-arg ... num rules, rule-1-start-state rule-1-args, rule-2-start-state rule-2-args, ... (args are token type,actionIndex in lexer else 0,0) num modes, mode-0-start-state, mode-1-start-state, ... (parser has 0 modes) num unicode-bmp-sets bmp-set-0-interval-count intervals, bmp-set-1-interval-count intervals, ... num unicode-smp-sets smp-set-0-interval-count intervals, smp-set-1-interval-count intervals, ... num total edges, src, trg, edge-type, edge arg1, optional edge arg2 (present always), ... num decisions, decision-0-start-state, decision-1-start-state, ... Convenient to pack into unsigned shorts to make as Java string.

getSerialized

public static IntegerList getSerialized(ATN atn)