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| author | Florian Hahn <flo@fhahn.com> | 2015-11-20 12:19:05 +0100 |
|---|---|---|
| committer | Florian Hahn <flo@fhahn.com> | 2015-11-20 14:31:04 +0100 |
| commit | c53722daae1a80d28f1fa101c05046ef2a2de8b5 (patch) | |
| tree | 1f8394307cefab6b9f8e7b5131c3cb1608b2704e /src/test | |
| parent | 2228bacd62ca8970a7a59401e78d0c5a34fc0f87 (diff) | |
| download | rust-c53722daae1a80d28f1fa101c05046ef2a2de8b5.tar.gz rust-c53722daae1a80d28f1fa101c05046ef2a2de8b5.zip | |
Remove slice pattern from compiler plugin example
closes #29930
Diffstat (limited to 'src/test')
| -rw-r--r-- | src/test/auxiliary/roman_numerals.rs | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/src/test/auxiliary/roman_numerals.rs b/src/test/auxiliary/roman_numerals.rs index 3abc6f4a9f5..c9249fb3357 100644 --- a/src/test/auxiliary/roman_numerals.rs +++ b/src/test/auxiliary/roman_numerals.rs @@ -39,8 +39,15 @@ fn expand_rn(cx: &mut ExtCtxt, sp: Span, args: &[TokenTree]) ("X", 10), ("IX", 9), ("V", 5), ("IV", 4), ("I", 1)]; - let text = match args { - [TokenTree::Token(_, token::Ident(s, _))] => s.to_string(), + if args.len() != 1 { + cx.span_err( + sp, + &format!("argument should be a single identifier, but got {} arguments", args.len())); + return DummyResult::any(sp); + } + + let text = match args[0] { + TokenTree::Token(_, token::Ident(s, _)) => s.to_string(), _ => { cx.span_err(sp, "argument should be a single identifier"); return DummyResult::any(sp); |