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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /tests/ui/proc-macro/auxiliary/multispan.rs | |
parent | Releasing progress-linux version 1.67.1+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-218caa410aa38c29984be31a5229b9fa717560ee.tar.xz rustc-218caa410aa38c29984be31a5229b9fa717560ee.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/proc-macro/auxiliary/multispan.rs')
-rw-r--r-- | tests/ui/proc-macro/auxiliary/multispan.rs | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/tests/ui/proc-macro/auxiliary/multispan.rs b/tests/ui/proc-macro/auxiliary/multispan.rs new file mode 100644 index 000000000..c05d15643 --- /dev/null +++ b/tests/ui/proc-macro/auxiliary/multispan.rs @@ -0,0 +1,37 @@ +// force-host +// no-prefer-dynamic + +#![crate_type = "proc-macro"] +#![feature(proc_macro_diagnostic, proc_macro_span, proc_macro_def_site)] + +extern crate proc_macro; + +use proc_macro::{TokenStream, TokenTree, Span, Diagnostic}; + +fn parse(input: TokenStream) -> Result<(), Diagnostic> { + let mut hi_spans = vec![]; + for tree in input { + if let TokenTree::Ident(ref ident) = tree { + if ident.to_string() == "hi" { + hi_spans.push(ident.span()); + } + } + } + + if !hi_spans.is_empty() { + return Err(Span::def_site() + .error("hello to you, too!") + .span_note(hi_spans, "found these 'hi's")); + } + + Ok(()) +} + +#[proc_macro] +pub fn hello(input: TokenStream) -> TokenStream { + if let Err(diag) = parse(input) { + diag.emit(); + } + + TokenStream::new() +} |