shardmap 0.3.2

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, eq_ignore_ascii_case, error, parse_usize, write_resp_wrong_arity,
    wrong_arity,
};
use crate::commands::zset_shared::{
    ZRangeScoreRequest, write_zrange_score_fast, zrange_by_score_impl,
};
use crate::protocol::Frame;
#[cfg(feature = "server")]
use crate::server::wire::ServerWire;
use crate::storage::EmbeddedStore;

define_redis_command!(ZRangeByScore, "ZRANGEBYSCORE", false);

impl crate::commands::redis::RedisCommand for ZRangeByScore {
    fn execute(store: &EmbeddedStore, args: &[&[u8]]) -> Frame {
        if args.len() < 3 {
            return wrong_arity("ZRANGEBYSCORE");
        }
        let mut with_scores = false;
        let mut limit = None;
        let mut index = 3;
        while index < args.len() {
            let option = args[index];
            match (option, args.get(index + 1), args.get(index + 2)) {
                (option, _, _) if eq_ignore_ascii_case(option, b"WITHSCORES") => {
                    with_scores = true;
                    index += 1;
                }
                (option, Some(offset), Some(count)) if eq_ignore_ascii_case(option, b"LIMIT") => {
                    let (Ok(offset), Ok(count)) = (parse_usize(offset), parse_usize(count)) else {
                        return error("ERR value is not an integer or out of range");
                    };
                    limit = Some((offset, count));
                    index += 3;
                }
                _ => return error("ERR syntax error"),
            }
        }
        zrange_by_score_impl(store, args[0], args[1], args[2], false, with_scores, limit)
    }

    #[cfg(feature = "server")]
    fn write_resp(store: &EmbeddedStore, args: &[&[u8]], out: &mut BytesMut) {
        if args.len() < 3 {
            write_resp_wrong_arity(out, "ZRANGEBYSCORE");
            return;
        }
        let mut with_scores = false;
        let mut limit = None;
        let mut index = 3;
        while index < args.len() {
            let option = args[index];
            match (option, args.get(index + 1), args.get(index + 2)) {
                (option, _, _) if eq_ignore_ascii_case(option, b"WITHSCORES") => {
                    with_scores = true;
                    index += 1;
                }
                (option, Some(offset), Some(count)) if eq_ignore_ascii_case(option, b"LIMIT") => {
                    let (Ok(offset), Ok(count)) = (parse_usize(offset), parse_usize(count)) else {
                        ServerWire::write_resp_error(
                            out,
                            "ERR value is not an integer or out of range",
                        );
                        return;
                    };
                    limit = Some((offset, count));
                    index += 3;
                }
                _ => {
                    ServerWire::write_resp_error(out, "ERR syntax error");
                    return;
                }
            }
        }
        crate::commands::zset_shared::write_zrange_score_resp(
            store,
            ZRangeScoreRequest {
                key: args[0],
                min: args[1],
                max: args[2],
                rev: false,
                with_scores,
                limit,
            },
            out,
        );
    }

    #[cfg(feature = "server")]
    fn write_fast(store: &EmbeddedStore, args: &[&[u8]], out: &mut BytesMut) {
        if args.len() < 3 {
            ServerWire::write_fast_error(
                out,
                "ERR wrong number of arguments for 'zrangebyscore' command",
            );
            return;
        }
        let mut with_scores = false;
        let mut limit = None;
        let mut index = 3;
        while index < args.len() {
            let option = args[index];
            match (option, args.get(index + 1), args.get(index + 2)) {
                (option, _, _) if eq_ignore_ascii_case(option, b"WITHSCORES") => {
                    with_scores = true;
                    index += 1;
                }
                (option, Some(offset), Some(count)) if eq_ignore_ascii_case(option, b"LIMIT") => {
                    let (Ok(offset), Ok(count)) = (parse_usize(offset), parse_usize(count)) else {
                        ServerWire::write_fast_error(
                            out,
                            "ERR value is not an integer or out of range",
                        );
                        return;
                    };
                    limit = Some((offset, count));
                    index += 3;
                }
                _ => {
                    ServerWire::write_fast_error(out, "ERR syntax error");
                    return;
                }
            }
        }
        write_zrange_score_fast(
            store,
            ZRangeScoreRequest {
                key: args[0],
                min: args[1],
                max: args[2],
                rev: false,
                with_scores,
                limit,
            },
            out,
        );
    }
}