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deprecations.rs
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deprecations.rs
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use proc_macro2::{Span, TokenStream};
use quote::{quote_spanned, ToTokens};
pub enum Deprecation {
CallAttribute,
PyClassGcOption,
}
impl Deprecation {
fn ident(&self, span: Span) -> syn::Ident {
let string = match self {
Deprecation::CallAttribute => "CALL_ATTRIBUTE",
Deprecation::PyClassGcOption => "PYCLASS_GC_OPTION",
};
syn::Ident::new(string, span)
}
}
#[derive(Default)]
pub struct Deprecations(Vec<(Deprecation, Span)>);
impl Deprecations {
pub fn new() -> Self {
Deprecations(Vec::new())
}
pub fn push(&mut self, deprecation: Deprecation, span: Span) {
self.0.push((deprecation, span))
}
}
impl ToTokens for Deprecations {
fn to_tokens(&self, tokens: &mut TokenStream) {
for (deprecation, span) in &self.0 {
let ident = deprecation.ident(*span);
quote_spanned!(
*span =>
let _ = _pyo3::impl_::deprecations::#ident;
)
.to_tokens(tokens)
}
}
}