src/test/auxiliary/issue_16723_multiple_items_syntax_ext.rs

   1 // Copyright 2012 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 // force-host
  12
  13 #![feature(plugin_registrar, quote, rustc_private)]
  14 #![crate_type = "dylib"]
  15
  16 extern crate syntax;
  17 extern crate rustc;
  18 extern crate rustc_plugin;
  19
  20 use syntax::ast;
  21 use syntax::codemap;
  22 use syntax::ext::base::{ExtCtxt, MacResult, MacEager};
  23 use syntax::util::small_vector::SmallVector;
  24 use rustc_plugin::Registry;
  25
  26 #[plugin_registrar]
  27 pub fn plugin_registrar(reg: &mut Registry) {
  28     reg.register_macro("multiple_items", expand)
  29 }
  30
  31 fn expand(cx: &mut ExtCtxt, _: codemap::Span, _: &[ast::TokenTree]) -> Box<MacResult+'static> {
  32     MacEager::items(SmallVector::many(vec![
  33         quote_item!(cx, struct Struct1;).unwrap(),
  34         quote_item!(cx, struct Struct2;).unwrap()
  35     ]))
  36 }