Merge pull request #267 from dtolnay/useunderscore

Leave private traits' name out of scope

Author: dtolnay

impl/src/expand.rs

@@ -89,7 +89,7 @@ fn impl_struct(input: Struct) -> TokenStream {
     let source_method = source_body.map(|body| {
         quote! {
             fn source(&self) -> ::core::option::Option<&(dyn std::error::Error + 'static)> {
-                use thiserror::__private::AsDynError;
+                use thiserror::__private::AsDynError as _;
                 #body
             }
         }
@@ -125,7 +125,7 @@ fn impl_struct(input: Struct) -> TokenStream {
                 })
             };
             quote! {
-                use thiserror::__private::ThiserrorProvide;
+                use thiserror::__private::ThiserrorProvide as _;
                 #source_provide
                 #self_provide
             }
@@ -266,7 +266,7 @@ fn impl_enum(input: Enum) -> TokenStream {
         });
         Some(quote! {
             fn source(&self) -> ::core::option::Option<&(dyn std::error::Error + 'static)> {
-                use thiserror::__private::AsDynError;
+                use thiserror::__private::AsDynError as _;
                 #[allow(deprecated)]
                 match self {
                     #(#arms)*
@@ -316,7 +316,7 @@ fn impl_enum(input: Enum) -> TokenStream {
                             #source: #varsource,
                             ..
                         } => {
-                            use thiserror::__private::ThiserrorProvide;
+                            use thiserror::__private::ThiserrorProvide as _;
                             #source_provide
                             #self_provide
                         }
@@ -340,7 +340,7 @@ fn impl_enum(input: Enum) -> TokenStream {
                     };
                     quote! {
                         #ty::#ident {#backtrace: #varsource, ..} => {
-                            use thiserror::__private::ThiserrorProvide;
+                            use thiserror::__private::ThiserrorProvide as _;
                             #source_provide
                         }
                     }