93b642d974
#[plugin] #[no_link] extern crate bleh;
becomes a crate attribute
#![plugin(bleh)]
The feature gate is still required.
It's almost never correct to link a plugin into the resulting library /
executable, because it will bring all of libsyntax and librustc with it.
However if you really want this behavior, you can get it with a separate
`extern crate` item in addition to the `plugin` attribute.
Fixes #21043.
Fixes #20769.
[breaking-change]
35 lines
1.0 KiB
Rust
35 lines
1.0 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// force-host
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#![crate_type = "dylib"]
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#![feature(plugin_registrar, quote)]
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extern crate "syntax_extension_with_dll_deps_1" as other;
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extern crate syntax;
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extern crate rustc;
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use syntax::ast::{TokenTree, Item, MetaItem};
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use syntax::codemap::Span;
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use syntax::ext::base::*;
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use rustc::plugin::Registry;
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#[plugin_registrar]
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pub fn plugin_registrar(reg: &mut Registry) {
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reg.register_macro("foo", expand_foo);
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}
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fn expand_foo(cx: &mut ExtCtxt, sp: Span, tts: &[TokenTree])
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-> Box<MacResult+'static> {
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let answer = other::the_answer();
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MacExpr::new(quote_expr!(cx, $answer))
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}
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