34 lines
837 B
Rust
34 lines
837 B
Rust
use std::fs;
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use proc_macro2::TokenStream;
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use quote::{format_ident, quote};
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pub(crate) fn build() -> TokenStream {
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println!("cargo:rerun-if-changed=../assets/tracked_data.json");
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let mut handlers: Vec<(String, u8)> =
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serde_json::from_str::<std::collections::BTreeMap<String, u8>>(
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&fs::read_to_string("../assets/tracked_data.json").unwrap(),
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)
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.expect("Failed to parse tracked_data.json")
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.into_iter()
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.collect();
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handlers.sort_by_key(|&(_, id)| id);
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let constants = handlers.iter().map(|(name, id)| {
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let ident = format_ident!("DATA_{}", name.to_uppercase());
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quote! {
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pub const #ident: u8 = #id;
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}
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});
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quote! {
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pub struct TrackedData;
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impl TrackedData {
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#(#constants)*
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}
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}
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}
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