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6081241962
Use a binding's field identifier to produce more descriptive output. Fall back to a binding's identifier if a field identifier is not available. Additionally, make the privatize.rs compiletest more specific and wrap the identifier in backticks to aid readability.
27 lines
923 B
Rust
27 lines
923 B
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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extern crate proc_macro;
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extern crate syn;
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extern crate synstructure;
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#[proc_macro_derive(DenyPublicFields)]
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pub fn expand_token_stream(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
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expand_string(&input.to_string()).parse().unwrap()
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}
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fn expand_string(input: &str) -> String {
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let type_ = syn::parse_macro_input(input).unwrap();
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let style = synstructure::BindStyle::Ref.into();
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synstructure::each_field(&type_, &style, |binding| {
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if binding.field.vis != syn::Visibility::Inherited {
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panic!("Field `{}` should not be public",
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binding.field.ident.as_ref().unwrap_or(&binding.ident));
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}
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"".to_owned()
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});
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"".to_owned()
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}
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