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Return old value in input setter methods

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This commit is contained in:
Mihail Mihov 2022-08-11 20:27:47 +03:00
parent ec141aceba
commit 11b23c942b
1 changed files with 2 additions and 2 deletions
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4
components/salsa-2022-macros/src/input.rs
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@ -93,11 +93,11 @@ impl InputStruct {
let field_setters: Vec<syn::ImplItemMethod> = field_indices.iter().zip(&field_names).zip(&field_tys).map(|((field_index, field_name), field_ty)| {
let set_field_name = syn::Ident::new(&format!("set_{}", field_name), field_name.span());
parse_quote! {
pub fn #set_field_name<'db>(self, __db: &'db mut #db_dyn_ty, __value: #field_ty)
pub fn #set_field_name<'db>(self, __db: &'db mut #db_dyn_ty, __value: #field_ty) -> #field_ty
{
let (__jar, __runtime) = <_ as salsa::storage::HasJar<#jar_ty>>::jar_mut(__db);
let __ingredients = <#jar_ty as salsa::storage::HasIngredientsFor< #ident >>::ingredient_mut(__jar);
__ingredients.#field_index.store(__runtime, self, __value, salsa::Durability::LOW);
__ingredients.#field_index.store(__runtime, self, __value, salsa::Durability::LOW).unwrap()
}
}
})