58 lines
1.6 KiB
Rust
58 lines
1.6 KiB
Rust
use std::{collections::BTreeMap, fs};
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use proc_macro2::TokenStream;
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use quote::{format_ident, quote};
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use serde::Deserialize;
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#[derive(Deserialize)]
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pub struct Packets {
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version: u32,
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serverbound: BTreeMap<String, BTreeMap<String, i32>>,
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clientbound: BTreeMap<String, BTreeMap<String, i32>>,
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}
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pub(crate) fn build() -> TokenStream {
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println!("cargo:rerun-if-changed=../assets/packet/1_21_11_packets.json");
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let packets: Packets =
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serde_json::from_str(&fs::read_to_string("../assets/packet/1_21_11_packets.json").unwrap())
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.expect("Failed to parse packets.json");
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let version = packets.version;
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let serverbound_consts = parse_packets(packets.serverbound);
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let clientbound_consts = parse_packets(packets.clientbound);
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quote!(
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/// The current Minecraft protocol version.
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pub const CURRENT_MC_PROTOCOL: u32 = #version;
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pub mod serverbound {
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#serverbound_consts
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}
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pub mod clientbound {
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#clientbound_consts
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}
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)
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}
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pub(crate) fn parse_packets(phases: BTreeMap<String, BTreeMap<String, i32>>) -> TokenStream {
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let mut consts = TokenStream::new();
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for (phase_name, packets) in phases {
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for (packet_name, packet_id) in packets {
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let sanitized_name = packet_name
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.replace("/", "_")
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.replace("-", "_")
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.to_uppercase();
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let const_name = format_ident!("{}_{}", phase_name.to_uppercase(), sanitized_name);
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consts.extend(quote! {
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pub const #const_name: i32 = #packet_id;
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});
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}
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}
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consts
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}
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