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upgrade to syn 2.x

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Signed-off-by: Jason Volk <jason@zemos.net>
This commit is contained in:
Jason Volk 2024-07-26 20:40:07 +00:00
parent 3b5607ecdc
commit ca82b59c6f
11 changed files with 138 additions and 99 deletions
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37
src/macros/mod.rs
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@ -7,23 +7,50 @@ mod rustc;
mod utils;
use proc_macro::TokenStream;
use syn::{
parse::{Parse, Parser},
parse_macro_input, Error, Item, ItemConst, ItemEnum, ItemFn, Meta,
};
pub(crate) type Result<T> = std::result::Result<T, Error>;
#[proc_macro_attribute]
pub fn admin_command_dispatch(args: TokenStream, input: TokenStream) -> TokenStream {
admin::command_dispatch(args, input)
attribute_macro::<ItemEnum, _>(args, input, admin::command_dispatch)
}
#[proc_macro_attribute]
pub fn cargo_manifest(args: TokenStream, input: TokenStream) -> TokenStream { cargo::manifest(args, input) }
pub fn cargo_manifest(args: TokenStream, input: TokenStream) -> TokenStream {
attribute_macro::<ItemConst, _>(args, input, cargo::manifest)
}
#[proc_macro_attribute]
pub fn recursion_depth(args: TokenStream, input: TokenStream) -> TokenStream { debug::recursion_depth(args, input) }
pub fn recursion_depth(args: TokenStream, input: TokenStream) -> TokenStream {
attribute_macro::<Item, _>(args, input, debug::recursion_depth)
}
#[proc_macro]
pub fn rustc_flags_capture(args: TokenStream) -> TokenStream { rustc::flags_capture(args) }
#[proc_macro_attribute]
pub fn refutable(args: TokenStream, input: TokenStream) -> TokenStream { refutable::refutable(args, input) }
pub fn refutable(args: TokenStream, input: TokenStream) -> TokenStream {
attribute_macro::<ItemFn, _>(args, input, refutable::refutable)
}
#[proc_macro_attribute]
pub fn implement(args: TokenStream, input: TokenStream) -> TokenStream { implement::implement(args, input) }
pub fn implement(args: TokenStream, input: TokenStream) -> TokenStream {
attribute_macro::<ItemFn, _>(args, input, implement::implement)
}
fn attribute_macro<I, F>(args: TokenStream, input: TokenStream, func: F) -> TokenStream
where
F: Fn(I, &[Meta]) -> Result<TokenStream>,
I: Parse,
{
let item = parse_macro_input!(input as I);
syn::punctuated::Punctuated::<Meta, syn::Token![,]>::parse_terminated
.parse(args)
.map(|args| args.iter().cloned().collect::<Vec<_>>())
.and_then(|ref args| func(item, args))
.unwrap_or_else(|e| e.to_compile_error().into())
}