mirror of https://github.com/rust-lang/rust
17 lines
355 B
Rust
17 lines
355 B
Rust
//@ force-host
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//@ no-prefer-dynamic
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#![feature(proc_macro_quote)]
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#![crate_type = "proc-macro"]
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extern crate proc_macro;
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use proc_macro::*;
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// Outputs another copy of the struct. Useful for testing the tokens
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// seen by the proc_macro.
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#[proc_macro_derive(Double)]
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pub fn derive(input: TokenStream) -> TokenStream {
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quote!(mod foo { $input })
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}
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