[YANGTOOLS-905] Detect ANTLR lexer errors

Sun, 10 Apr 2022 18:36:02 +0000

During work on YANGTOOLS-887 it became clear that our current use of ANTLR could be improved, because we only attach ANTLRErrorListener to parsers, but not lexers.

This leads to the problem of us failing to report lexer errors and we only report parser errors which come from the failure to lex.

Improve this by also attaching listeners to lexers, too.

OpenDaylight JIRA

[YANGTOOLS-905] Detect ANTLR lexer errors