use syntax::tokenstream;
use syntax_pos::DUMMY_SP;
use syntax_pos::SyntaxContext;
+use syntax_pos::hygiene::Mark;
/// The main type provided by this crate, representing an abstract stream of
/// tokens.
__internal::with_sess(|(sess, mark)| {
let src = src.to_string();
let name = "<proc-macro source code>".to_string();
- let call_site = mark.expn_info().unwrap().call_site;
- let stream = parse::parse_stream_from_source_str(name, src, sess, Some(call_site));
+ let expn_info = mark.expn_info().unwrap();
+ let call_site = expn_info.call_site;
+ // notify the expansion info that it is unhygienic
+ let mark = Mark::fresh(mark);
+ mark.set_expn_info(expn_info);
+ let span = syntax_pos::Span {
+ ctxt: SyntaxContext::empty().apply_mark(mark),
+ ..call_site
+ };
+ let stream = parse::parse_stream_from_source_str(name, src, sess, Some(span));
Ok(__internal::token_stream_wrap(stream))
})
}
--- /dev/null
+// 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.
+
+// force-host
+// no-prefer-dynamic
+#![feature(proc_macro)]
+#![crate_type = "proc-macro"]
+
+extern crate proc_macro;
+
+use proc_macro::TokenStream;
+
+#[proc_macro]
+pub fn bang_proc_macro2(_: TokenStream) -> TokenStream {
+ "let x = foobar2;".parse().unwrap()
+}
--- /dev/null
+// 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.
+
+// aux-build:bang_proc_macro2.rs
+
+#![feature(proc_macro)]
+#![allow(unused_macros)]
+
+extern crate bang_proc_macro2;
+
+use bang_proc_macro2::bang_proc_macro2;
+
+fn main() {
+ let foobar = 42;
+ bang_proc_macro2!();
+ //~^ ERROR cannot find value `foobar2` in this scope
+ //~^^ did you mean `foobar`?
+ println!("{}", x);
+}