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Mark #[automatically_derived] for generated impls #322

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Merged
merged 1 commit into from
Sep 22, 2024
Merged

Mark #[automatically_derived] for generated impls #322

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8 changes: 8 additions & 0 deletions impl/src/expand.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,7 @@ fn fallback(input: &DeriveInput, error: syn::Error) -> TokenStream {
#error

#[allow(unused_qualifications)]
#[automatically_derived]
impl #impl_generics std::error::Error for #ty #ty_generics #where_clause
where
// Work around trivial bounds being unstable.
Expand All @@ -44,6 +45,7 @@ fn fallback(input: &DeriveInput, error: syn::Error) -> TokenStream {
{}

#[allow(unused_qualifications)]
#[automatically_derived]
impl #impl_generics ::core::fmt::Display for #ty #ty_generics #where_clause {
fn fmt(&self, __formatter: &mut ::core::fmt::Formatter) -> ::core::fmt::Result {
::core::unreachable!()
Expand Down Expand Up @@ -178,6 +180,7 @@ fn impl_struct(input: Struct) -> TokenStream {
let display_where_clause = display_inferred_bounds.augment_where_clause(input.generics);
quote! {
#[allow(unused_qualifications)]
#[automatically_derived]
impl #impl_generics ::core::fmt::Display for #ty #ty_generics #display_where_clause {
#[allow(clippy::used_underscore_binding)]
fn fmt(&self, __formatter: &mut ::core::fmt::Formatter) -> ::core::fmt::Result {
Expand All @@ -193,6 +196,7 @@ fn impl_struct(input: Struct) -> TokenStream {
let body = from_initializer(from_field, backtrace_field);
quote! {
#[allow(unused_qualifications)]
#[automatically_derived]
impl #impl_generics ::core::convert::From<#from> for #ty #ty_generics #where_clause {
#[allow(deprecated)]
fn from(source: #from) -> Self {
Expand All @@ -211,6 +215,7 @@ fn impl_struct(input: Struct) -> TokenStream {

quote! {
#[allow(unused_qualifications)]
#[automatically_derived]
impl #impl_generics std::error::Error for #ty #ty_generics #error_where_clause {
#source_method
#provide_method
Expand Down Expand Up @@ -427,6 +432,7 @@ fn impl_enum(input: Enum) -> TokenStream {
let display_where_clause = display_inferred_bounds.augment_where_clause(input.generics);
Some(quote! {
#[allow(unused_qualifications)]
#[automatically_derived]
impl #impl_generics ::core::fmt::Display for #ty #ty_generics #display_where_clause {
fn fmt(&self, __formatter: &mut ::core::fmt::Formatter) -> ::core::fmt::Result {
#use_as_display
Expand All @@ -449,6 +455,7 @@ fn impl_enum(input: Enum) -> TokenStream {
let body = from_initializer(from_field, backtrace_field);
Some(quote! {
#[allow(unused_qualifications)]
#[automatically_derived]
impl #impl_generics ::core::convert::From<#from> for #ty #ty_generics #where_clause {
#[allow(deprecated)]
fn from(source: #from) -> Self {
Expand All @@ -467,6 +474,7 @@ fn impl_enum(input: Enum) -> TokenStream {

quote! {
#[allow(unused_qualifications)]
#[automatically_derived]
impl #impl_generics std::error::Error for #ty #ty_generics #error_where_clause {
#source_method
#provide_method
Expand Down