ffde86efa0
Objective During work on #3009 I've found that not all jobs use actions-rs, and therefore, an previous version of Rust is used for them. So while compilation and other stuff can pass, checking markup and Android build may fail with compilation errors. Solution This PR adds `action-rs` for any job running cargo, and updates the edition to 2021.
40 lines
1.3 KiB
Rust
40 lines
1.3 KiB
Rust
use bevy_macro_utils::BevyManifest;
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use proc_macro::TokenStream;
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use quote::quote;
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use syn::{parse_macro_input, Data, DeriveInput};
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pub fn derive_enum_variant_meta(input: TokenStream) -> TokenStream {
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let ast = parse_macro_input!(input as DeriveInput);
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let variants = match &ast.data {
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Data::Enum(v) => &v.variants,
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_ => panic!("Expected an enum."),
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};
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let bevy_util_path = BevyManifest::default().get_path(crate::modules::BEVY_UTILS);
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let generics = ast.generics;
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let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
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let struct_name = &ast.ident;
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let idents = variants.iter().map(|v| &v.ident);
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let names = variants.iter().map(|v| v.ident.to_string());
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let indices = 0..names.len();
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TokenStream::from(quote! {
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impl #impl_generics #bevy_util_path::EnumVariantMeta for #struct_name #ty_generics #where_clause {
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fn enum_variant_index(&self) -> usize {
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match self {
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#(#struct_name::#idents {..} => #indices,)*
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}
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}
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fn enum_variant_name(&self) -> &'static str {
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static variants: &[&str] = &[
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#(#names,)*
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];
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let index = self.enum_variant_index();
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variants[index]
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}
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}
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})
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}
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