(
self,
field_name: TokenStream,
global_field_name: TokenStream,
real_field_name: TokenStream,
field_type: &Type,
)
| 26 | } |
| 27 | impl crate::shared::Item for Item { |
| 28 | fn field_impl( |
| 29 | self, |
| 30 | field_name: TokenStream, |
| 31 | global_field_name: TokenStream, |
| 32 | real_field_name: TokenStream, |
| 33 | field_type: &Type, |
| 34 | ) -> TokenStream { |
| 35 | match self { |
| 36 | Self::Type => { |
| 37 | let static_type = replace_lifetimes(field_type, "static"); |
| 38 | let private = private(); |
| 39 | quote! { |
| 40 | #global_field_name: <#static_type as #private::Encode>::Encoder, |
| 41 | } |
| 42 | } |
| 43 | Self::Default => quote! { |
| 44 | #global_field_name: Default::default(), |
| 45 | }, |
| 46 | Self::Encode | Self::EncodeVectored => { |
| 47 | let static_type = replace_lifetimes(field_type, "static"); |
| 48 | let value = if &static_type != field_type { |
| 49 | let underscore_type = replace_lifetimes(field_type, "_"); |
| 50 | |
| 51 | // HACK: Since encoders don't have lifetimes we can't reference <T<'a> as Encode>::Encoder since 'a |
| 52 | // does not exist. Instead we replace this with <T<'static> as Encode>::Encoder and transmute it to |
| 53 | // T<'a>. No encoder actually encodes T<'static> any differently from T<'a> so this is sound. |
| 54 | quote! { |
| 55 | unsafe { std::mem::transmute::<&#underscore_type, &#static_type>(#field_name) } |
| 56 | } |
| 57 | } else { |
| 58 | quote! { #field_name } |
| 59 | }; |
| 60 | |
| 61 | if matches!(self, Self::EncodeVectored) { |
| 62 | quote! { |
| 63 | self.#global_field_name.encode_vectored(i.clone().map(|me| { |
| 64 | let #field_name = &me.#real_field_name; |
| 65 | #value |
| 66 | })); |
| 67 | } |
| 68 | } else { |
| 69 | quote! { |
| 70 | self.#global_field_name.encode(#value); |
| 71 | } |
| 72 | } |
| 73 | } |
| 74 | Self::CollectInto => quote! { |
| 75 | self.#global_field_name.collect_into(out); |
| 76 | }, |
| 77 | Self::Reserve => quote! { |
| 78 | self.#global_field_name.reserve(__additional); |
| 79 | }, |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | fn struct_impl( |
| 84 | self, |
no test coverage detected