use crate::{
    request_tokenizer::RequestTokenizer,
    commands::{Command, Request, RequestParserResult, ResponseAttributes, ResponseParserError},
};

pub struct Clear;

impl Command for Clear {
    type Request = ();
    type Response = ();
    const COMMAND: &'static str = "clear";

    fn serialize_request(&self, _request: Self::Request) -> String {
        Self::COMMAND.to_string()
    }

    fn parse_request(mut parts: RequestTokenizer<'_>) -> RequestParserResult<'_> {
        debug_assert!(parts.next().is_none());
        Ok((Request::Clear, ""))
    }

    fn parse_response(
        parts: ResponseAttributes<'_>,
    ) -> Result<Self::Response, ResponseParserError<'_>> {
        debug_assert!(parts.is_empty());
        Ok(())
    }
}