| 1 | use proc_macro2::TokenStream; |
| 2 | use quote::quote; |
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| 3 | |
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| 4 | pub fn wrap_in_const(serde_path: Option<&syn::Path>, code: TokenStream) -> TokenStream { |
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| 5 | let use_serde: TokenStream = match serde_path { |
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| 6 | Some(path: &Path) => quote! { |
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| 7 | use #path as _serde; |
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| 8 | }, |
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| 9 | None => quote! { |
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| 10 | #[allow(unused_extern_crates, clippy::useless_attribute)] |
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| 11 | extern crate serde as _serde; |
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| 12 | }, |
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| 13 | }; |
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| 14 | |
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| 15 | quote! { |
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| 16 | #[doc(hidden)] |
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| 17 | #[allow(non_upper_case_globals, unused_attributes, unused_qualifications)] |
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| 18 | const _: () = { |
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| 19 | #use_serde |
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| 20 | #code |
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| 21 | }; |
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| 22 | } |
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| 23 | } |
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| 24 | |
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