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Make most of prepare_enum_variant_enum independent of variant_names_idents item type

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David Tolnay 2024-10-21 22:47:42 -07:00
parent 830309fcb5
commit 3393ad6760
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1 changed files with 13 additions and 13 deletions
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26
serde_derive/src/de.rs
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@ -1225,33 +1225,33 @@ fn deserialize_homogeneous_enum(
}
fn prepare_enum_variant_enum(variants: &[Variant]) -> (TokenStream, Stmts) {
let mut deserialized_variants = variants
let deserialized_variants = variants
.iter()
.enumerate()
.filter(|&(_, variant)| !variant.attrs.skip_deserializing());
let variant_names_idents: Vec<_> = deserialized_variants
.clone()
.map(|(i, variant)| (field_i(i), variant.attrs.aliases()))
.collect();
.filter(|&(_i, variant)| !variant.attrs.skip_deserializing());
let fallthrough = deserialized_variants
.position(|(_, variant)| variant.attrs.other())
.map(|other_idx| {
let ignore_variant = variant_names_idents[other_idx].0.clone();
.clone()
.find(|(_i, variant)| variant.attrs.other())
.map(|(i, _variant)| {
let ignore_variant = field_i(i);
quote!(_serde::__private::Ok(__Field::#ignore_variant))
});
let variants_stmt = {
let variant_names = variant_names_idents
.iter()
.flat_map(|&(_, aliases)| aliases);
let variant_names = deserialized_variants
.clone()
.flat_map(|(_i, variant)| variant.attrs.aliases());
quote! {
#[doc(hidden)]
const VARIANTS: &'static [&'static str] = &[ #(#variant_names),* ];
}
};
let variant_names_idents: Vec<_> = deserialized_variants
.map(|(i, variant)| (field_i(i), variant.attrs.aliases()))
.collect();
let variant_visitor = Stmts(deserialize_generated_identifier(
&variant_names_idents,
false, // variant identifiers do not depend on the presence of flatten fields