mirror of https://github.com/rust-lang/rust
27 lines
584 B
Rust
27 lines
584 B
Rust
//@ force-host
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//@ no-prefer-dynamic
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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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#[proc_macro]
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pub fn lifetimes_bang(input: TokenStream) -> TokenStream {
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// Roundtrip through token trees
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input.into_iter().collect()
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}
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#[proc_macro_attribute]
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pub fn lifetimes_attr(_: TokenStream, input: TokenStream) -> TokenStream {
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// Roundtrip through AST
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input
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}
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#[proc_macro_derive(Lifetimes)]
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pub fn lifetimes_derive(input: TokenStream) -> TokenStream {
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// Roundtrip through a string
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format!("mod m {{ {} }}", input).parse().unwrap()
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}
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