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Code Issues Releases Wiki Activity

copy original route macro input with compile errors (#2410)

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This commit is contained in:
Rob Ede
2021-10-14 18:06:31 +01:00
committed by GitHub
parent 99985fc4ec
commit 6b3ea4fc61
6 changed files with 25 additions and 8 deletions
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17
actix-web-codegen/src/route.rs
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@ -349,8 +349,21 @@ pub(crate) fn with_method(
input: TokenStream,
) -> TokenStream {
let args = parse_macro_input!(args as syn::AttributeArgs);
match Route::new(args, input, method) {
match Route::new(args, input.clone(), method) {
Ok(route) => route.into_token_stream().into(),
Err(err) => err.to_compile_error().into(),
// on parse err, make IDEs happy; see fn docs
Err(err) => input_and_compile_error(input, err),
}
}
/// Converts the error to a token stream and appends it to the original input.
///
/// Returning the original input in addition to the error is good for IDEs which can gracefully
/// recover and show more precise errors within the macro body.
///
/// See <https://github.com/rust-analyzer/rust-analyzer/issues/10468> for more info.
fn input_and_compile_error(mut item: TokenStream, err: syn::Error) -> TokenStream {
let compile_err = TokenStream::from(err.to_compile_error());
item.extend(compile_err);
return item;
}