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//@ force-host
//@ no-prefer-dynamic
//@ compile-flags: --crate-type proc-macro
#![crate_type="proc-macro"]
#![crate_name="some_macros"]
extern crate proc_macro;
use proc_macro::TokenStream;
macro_rules! make_attr_macro {
($name:ident) => {
/// Generated doc comment
#[proc_macro_attribute]
pub fn $name(args: TokenStream, input: TokenStream) -> TokenStream {
panic!()
}
}
}
make_attr_macro!(first_attr);
make_attr_macro!(second_attr);
/// a proc-macro that swallows its input and does nothing.
#[proc_macro]
pub fn some_proc_macro(_input: TokenStream) -> TokenStream {
TokenStream::new()
}
/// a proc-macro attribute that passes its item through verbatim.
#[proc_macro_attribute]
pub fn some_proc_attr(_attr: TokenStream, item: TokenStream) -> TokenStream {
item
}
/// a derive attribute that adds nothing to its input.
#[proc_macro_derive(SomeDerive)]
pub fn some_derive(_item: TokenStream) -> TokenStream {
TokenStream::new()
}
/// Doc comment from the original crate
#[proc_macro]
pub fn reexported_macro(_input: TokenStream) -> TokenStream {
TokenStream::new()
}
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