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refactor: ModuleConfig: Simplify generated from_config() implementations (#775)

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We can use `and_then()` to string `Option` values together so that we only need a single `?` assertion. This makes it generally possible to have e.g. `unwrap_or()` at the end.
This commit is contained in:
Tobias Bieniek 2019-12-23 16:12:21 +01:00 committed by Matan Kushner
parent c4ed88952c
commit 9a1569444b
1 changed files with 1 additions and 1 deletions
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starship_module_config_derive/src/lib.rs
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@ -33,7 +33,7 @@ fn impl_module_config(dinput: DeriveInput) -> proc_macro::TokenStream {
} }
}; };
let new_from_tokens = quote! { let new_from_tokens = quote! {
#ident: <#ty>::from_config(config.get(stringify!(#ident))?)?, #ident: config.get(stringify!(#ident)).and_then(<#ty>::from_config)?,
}; };
load_tokens = quote! { load_tokens = quote! {