Method error_at

aiscript-lexer/src/error_reporter.rs:26–41

(&mut self, token: Token<'_>, message: &str)

    }

    pub fn error_at(&mut self, token: Token<'_>, message: &str) {
        if self.panic_mode {
            return;
        }
        self.panic_mode = true;
        eprint!("[line {}] Error", token.line);
        if token.kind == TokenType::Eof {
            eprint!(" at end");
        } else if token.kind == TokenType::Invalid {
            // Do nothing.
        } else {
            eprint!(" at '{}'", token.lexeme);
        }
        eprintln!(": {message}");
        self.had_error = true;
    }
}