use syntax::parse::{ParseSess, filemap_to_tts};
use syntax::tokenstream::TokenStream;
-/// Map a string to tts, using a made-up filename. For example, `lex(15)` will return a
+/// Map a string to tts, using a made-up filename. For example, `lex("15")` will return a
/// TokenStream containing the literal 15.
pub fn lex(source_str: &str) -> TokenStream {
let ps = ParseSess::new();
TokenStream::from_tts(filemap_to_tts(&ps,
- ps.codemap().new_filemap("procmacro_lex".to_string(),
+ ps.codemap().new_filemap("<procmacro_lex>".to_string(),
None,
source_str.to_owned())))
}