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use syn::parse::{Parse, Parser};
use deluxe_core::Errors;
#[inline]
pub fn parse<T: Parse>(input: proc_macro::TokenStream, errors: &Errors) -> Option<T> {
errors.push_result(<T as Parse>::parse.parse(input))
}
fn crate_path(errors: Option<&Errors>) -> Option<syn::Path> {
use proc_macro_crate::FoundCrate;
const CRATE_NAME: &str = "deluxe";
let crate_name = match proc_macro_crate::crate_name(CRATE_NAME) {
Ok(FoundCrate::Name(name)) => name,
Ok(FoundCrate::Itself) => CRATE_NAME.into(),
Err(e) => {
if let Some(errors) = errors {
errors.push(proc_macro2::Span::call_site(), e.to_string());
}
return None;
}
};
let ident = syn::Ident::new(&crate_name, proc_macro2::Span::call_site());
Some(syn::parse_quote! { ::#ident })
}
#[inline]
pub fn get_crate_path(path: Option<Option<syn::Path>>, errors: &Errors) -> Option<syn::Path> {
match path {
Some(Some(path)) => Some(path),
Some(None) => crate_path(Some(errors)),
None => crate_path(None),
}
}
macro_rules! quote_mixed {
($($tt:tt)*) => {
quote::quote_spanned! { Span::mixed_site() => $($tt)* }
};
}
macro_rules! parse_quote_mixed {
($($tt:tt)*) => {
syn::parse_quote_spanned! { Span::mixed_site() => $($tt)* }
};
}
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