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libsyntax: De-@str get_single_str_from_tts

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Patrick Walton 2014-01-15 18:33:33 -08:00 • committed by Huon Wilson
parent f9af11d6cc
commit cbf9f5f5df
1 changed files with 4 additions and 2 deletions
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6
src/libsyntax/ext/base.rs
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@ -439,13 +439,15 @@ pub fn get_single_str_from_tts(cx: &ExtCtxt,
sp: Span,
tts: &[ast::TokenTree],
name: &str)
-> Option<@str> {
-> Option<~str> {
if tts.len() != 1 {
cx.span_err(sp, format!("{} takes 1 argument.", name));
} else {
match tts[0] {
ast::TTTok(_, token::LIT_STR(ident))
| ast::TTTok(_, token::LIT_STR_RAW(ident, _)) => return Some(cx.str_of(ident)),
| ast::TTTok(_, token::LIT_STR_RAW(ident, _)) => {
return Some(cx.str_of(ident).to_str())
}
_ => cx.span_err(sp, format!("{} requires a string.", name)),
}
}