public LexerInterpreter createLexerInterpreter(CharStream input) {
if (this.isParser()) {
throw new IllegalStateException(
"A lexer interpreter can only be created for a lexer or combined grammar.");
}
if (this.isCombined()) {
return implicitLexer.createLexerInterpreter(input);
}
char[] serializedAtn = ATNSerializer.getSerializedAsChars(atn);
ATN deserialized = new ATNDeserializer().deserialize(serializedAtn);
return new LexerInterpreter(
fileName,
Arrays.asList(getTokenDisplayNames()),
Arrays.asList(getRuleNames()),
((LexerGrammar) this).modes.keySet(),
deserialized,
input);
}
