Add a more understandable message than "Serialized ATN data element .... element ... out of range 0..65535" #1863
Description
Hi,
I tried to build a big grammar file with antlr4. I've got the following message when I execute the ANTLR code that generate java source :
Exception in thread "main" java.lang.UnsupportedOperationException: Serialized ATN data element ```
101246 element 11 out of range 0..65535
at org.antlr.v4.runtime.atn.ATNSerializer.serialize(ATNSerializer.java:361)
at org.antlr.v4.runtime.atn.ATNSerializer.getSerialized(ATNSerializer.java:601)
at org.antlr.v4.codegen.model.SerializedATN.<init>(SerializedATN.java:22)
at org.antlr.v4.codegen.model.Recognizer.<init>(Recognizer.java:64)
at org.antlr.v4.codegen.model.Lexer.<init>(Lexer.java:27)
at org.antlr.v4.codegen.OutputModelController.lexer(OutputModelController.java:151)
at org.antlr.v4.codegen.OutputModelController.buildLexerOutputModel(OutputModelController.java:104)
at org.antlr.v4.codegen.CodeGenerator.generateLexer(CodeGenerator.java:119)
at org.antlr.v4.codegen.CodeGenPipeline.process(CodeGenPipeline.java:54)
at org.antlr.v4.Tool.processNonCombinedGrammar(Tool.java:404)
at org.antlr.v4.Tool.process(Tool.java:354)
at org.antlr.v4.Tool.processGrammarsOnCommandLine(Tool.java:321)
at org.antlr.v4.Tool.main(Tool.java:168)
From what I understand, my grammar file is too long.
Is that possible to get a message to explain that the limitation of the library is reached ?
For your test, here it is my grammar file ( a bit cryptic cause I anonymize it) :
https://gist.github.com/jbarotin/7f7caf419b9038c2a548969265788392