ANTLRAssistBehavior.java 文件源码

private Constructor<? extends Lexer> getLexerCtor() {
    if (lexerCtor == null) {
        try {
            lexerCtor = lexerClass.getConstructor(CharStream.class);
        } catch (NoSuchMethodException | SecurityException e) {
            throw new RuntimeException(e);
        }

    }
    return lexerCtor;
}