shardmap 0.3.1

Sharded embedded in-memory map with optional cache, protocol, and server internals
Documentation 
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#[cfg(feature = "server")]
use bytes::BytesMut;

use crate::commands::redis::{
    define_redis_command, error, frame_from_result, int, parse_lex_bound, write_resp_wrong_arity,
    write_resp_wrongtype, write_result_resp, wrong_arity, wrongtype,
};
use crate::protocol::Frame;
#[cfg(feature = "server")]
use crate::server::wire::ServerWire;
use crate::storage::{EmbeddedStore, RedisObjectError};

define_redis_command!(ZRemRangeByLex, "ZREMRANGEBYLEX", true);

impl crate::commands::redis::RedisCommand for ZRemRangeByLex {
    fn execute(store: &EmbeddedStore, args: &[&[u8]]) -> Frame {
        match args {
            [key, min, max] => {
                let (Ok(min), Ok(max)) = (parse_lex_bound(min), parse_lex_bound(max)) else {
                    return error("ERR min or max not valid string range item");
                };
                let entries = match store.zentries(key) {
                    Ok(entries) => entries,
                    Err(RedisObjectError::WrongType) => return wrongtype(),
                    Err(RedisObjectError::MissingKey) => return int(0),
                };
                let members = entries
                    .iter()
                    .filter(|(member, _)| {
                        min.contains(member.as_slice(), true)
                            && max.contains(member.as_slice(), false)
                    })
                    .map(|(member, _)| member.as_slice())
                    .collect::<Vec<_>>();
                if members.is_empty() {
                    int(0)
                } else {
                    frame_from_result(store.zrem_many(key, &members))
                }
            }
            _ => wrong_arity("ZREMRANGEBYLEX"),
        }
    }

    #[cfg(feature = "server")]
    fn write_resp(store: &EmbeddedStore, args: &[&[u8]], out: &mut BytesMut) {
        match args {
            [key, min, max] => {
                let (Ok(min), Ok(max)) = (parse_lex_bound(min), parse_lex_bound(max)) else {
                    ServerWire::write_resp_error(out, "ERR min or max not valid string range item");
                    return;
                };
                let entries = match store.zentries(key) {
                    Ok(entries) => entries,
                    Err(RedisObjectError::WrongType) => {
                        write_resp_wrongtype(out);
                        return;
                    }
                    Err(RedisObjectError::MissingKey) => {
                        ServerWire::write_resp_integer(out, 0);
                        return;
                    }
                };
                let members = entries
                    .iter()
                    .filter(|(member, _)| {
                        min.contains(member.as_slice(), true)
                            && max.contains(member.as_slice(), false)
                    })
                    .map(|(member, _)| member.as_slice())
                    .collect::<Vec<_>>();
                if members.is_empty() {
                    ServerWire::write_resp_integer(out, 0);
                } else {
                    write_result_resp(out, store.zrem_many(key, &members));
                }
            }
            _ => write_resp_wrong_arity(out, "ZREMRANGEBYLEX"),
        }
    }
}