/
plugin.rs
37 lines (29 loc) · 1015 Bytes
/
plugin.rs
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// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// no-prefer-dynamic
#![crate_type = "proc-macro"]
extern crate proc_macro;
use proc_macro::TokenStream;
#[proc_macro_derive(Foo)]
pub fn derive_foo(input: TokenStream) -> TokenStream {
input
}
#[proc_macro_derive(Bar)]
pub fn derive_bar(input: TokenStream) -> TokenStream {
panic!("lolnope");
}
#[proc_macro_derive(WithHelper, attributes(helper))]
pub fn with_helper(input: TokenStream) -> TokenStream {
TokenStream::new()
}
#[proc_macro_attribute]
pub fn helper(_: TokenStream, input: TokenStream) -> TokenStream {
input
}