79 lines
2.3 KiB
Rust
79 lines
2.3 KiB
Rust
use serde::{Deserialize, Serialize};
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use crate::{
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commands::{Command, Request, RequestParserError, RequestParserResult, ResponseParserError},
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common::{Sort, WindowRange},
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filter::Filter,
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request_tokenizer::RequestTokenizer,
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response_tokenizer::ResponseAttributes,
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};
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pub struct Find;
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#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
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pub struct FindRequest {
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filter: Filter,
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sort: Option<Sort>,
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window: Option<WindowRange>,
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}
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#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
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pub struct FindResponse {}
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impl Command for Find {
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type Request = FindRequest;
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type Response = FindResponse;
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const COMMAND: &'static str = "find";
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fn serialize_request(&self, request: Self::Request) -> String {
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let mut cmd = format!("{} {}", Self::COMMAND, request.filter);
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if let Some(sort) = request.sort {
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cmd.push_str(&format!(" sort {}", sort));
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}
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if let Some(window) = request.window {
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cmd.push_str(&format!(" window {}", window));
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}
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cmd
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}
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fn parse_request(mut parts: RequestTokenizer<'_>) -> RequestParserResult<'_> {
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let filter = match parts.next() {
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Some(f) => {
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Filter::parse(f).map_err(|_| RequestParserError::SyntaxError(1, f.to_owned()))?
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}
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None => return Err(RequestParserError::UnexpectedEOF),
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};
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let mut sort_or_window = parts.next();
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let mut sort = None;
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if let Some("sort") = sort_or_window {
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sort = Some(
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parts
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.next()
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.ok_or(RequestParserError::UnexpectedEOF)?
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.to_string(),
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);
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sort_or_window = parts.next();
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}
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let mut window = None;
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if let Some("window") = sort_or_window {
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let w = parts.next().ok_or(RequestParserError::UnexpectedEOF)?;
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window = Some(
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w.parse()
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.map_err(|_| RequestParserError::SyntaxError(0, w.to_string()))?,
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);
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}
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debug_assert!(parts.next().is_none());
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Ok((Request::Find(filter, sort, window), ""))
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}
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fn parse_response(
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parts: ResponseAttributes<'_>,
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) -> Result<Self::Response, ResponseParserError<'_>> {
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unimplemented!()
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}
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}
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