ANTLR/Java does not deal well with a parser name cParser because with Java 20 cParserListerner becomes an unbound symbol.
The lower case c is due to the package name sanitization introduced in:
212
So this problem exists since 2.8.4, but many only surfaced with recent Java versions that are more strict with case.
A solution is to use a capitial CamelCase for the prefix of Parser and Lexer, but keep the snake_case for the package name.
ANTLR/Java does not deal well with a parser name
cParserbecause with Java 20cParserListernerbecomes an unbound symbol. The lower casecis due to the package name sanitization introduced in:212
So this problem exists since 2.8.4, but many only surfaced with recent Java versions that are more strict with case.
A solution is to use a capitial CamelCase for the prefix of
ParserandLexer, but keep the snake_case for the package name.