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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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42
src/macros/cargo.rs
View file

@ -1,39 +1,34 @@
use std::{fs::read_to_string, path::PathBuf};
use proc_macro::TokenStream;
use proc_macro::{Span, TokenStream};
use quote::quote;
use syn::{parse_macro_input, AttributeArgs, ItemConst, Lit, NestedMeta};
use syn::{Error, ItemConst, Meta};
pub(super) fn manifest(args: TokenStream, item: TokenStream) -> TokenStream {
let item = parse_macro_input!(item as ItemConst);
let args = parse_macro_input!(args as AttributeArgs);
let member = args.into_iter().find_map(|arg| {
let NestedMeta::Lit(arg) = arg else {
return None;
};
let Lit::Str(arg) = arg else {
return None;
};
Some(arg.value())
});
use crate::{utils, Result};
let path = manifest_path(member.as_deref());
pub(super) fn manifest(item: ItemConst, args: &[Meta]) -> Result<TokenStream> {
let member = utils::get_named_string(args, "crate");
let path = manifest_path(member.as_deref())?;
let manifest = read_to_string(&path).unwrap_or_default();
let name = item.ident;
let val = manifest.as_str();
let name = item.ident;
let ret = quote! {
const #name: &'static str = #val;
};
ret.into()
Ok(ret.into())
}
#[allow(clippy::option_env_unwrap)]
fn manifest_path(member: Option<&str>) -> PathBuf {
let mut path: PathBuf = option_env!("CARGO_MANIFEST_DIR")
.expect("missing CARGO_MANIFEST_DIR in environment")
.into();
fn manifest_path(member: Option<&str>) -> Result<PathBuf> {
let Some(path) = option_env!("CARGO_MANIFEST_DIR") else {
return Err(Error::new(
Span::call_site().into(),
"missing CARGO_MANIFEST_DIR in environment",
));
};
let mut path: PathBuf = path.into();
// conduwuit/src/macros/ -> conduwuit/src/
path.pop();
@ -47,5 +42,6 @@ fn manifest_path(member: Option<&str>) -> PathBuf {
}
path.push("Cargo.toml");
path
Ok(path)
}