1 files changed, 49 insertions, 0 deletions
diff --git a/proc-macro-error/proc-macro-error/src/nightly.rs b/proc-macro-error/proc-macro-error/src/nightly.rs
new file mode 100644
index 0000000..d053c2f
--- /dev/null
+++ b/proc-macro-error/proc-macro-error/src/nightly.rs
@@ -0,0 +1,49 @@
+use std::sync::atomic::{AtomicBool, Ordering};
+
+use proc_macro::{Diagnostic as PDiag, Level as PLevel};
+
+use crate::{abort_now, check_correctness, Diagnostic, Level, SuggestionKind};
+
+pub fn abort_if_dirty() {
+    check_correctness();
+    if IS_DIRTY.load(Ordering::SeqCst) {
+        abort_now()
+    }
+}
+
+pub(crate) fn cleanup() -> Vec<Diagnostic> {
+    vec![]
+}
+
+pub(crate) fn emit_diagnostic(diag: Diagnostic) {
+    let Diagnostic {
+        level,
+        span,
+        msg,
+        suggestions,
+    } = diag;
+
+    let level = match level {
+        Level::Warning => PLevel::Warning,
+        Level::Error => {
+            IS_DIRTY.store(true, Ordering::SeqCst);
+            PLevel::Error
+        }
+        _ => unreachable!(),
+    };
+
+    let mut res = PDiag::spanned(span.unwrap(), level, msg);
+
+    for (kind, msg, span) in suggestions {
+        res = match (kind, span) {
+            (SuggestionKind::Note, Some(span)) => res.span_note(span.unwrap(), msg),
+            (SuggestionKind::Help, Some(span)) => res.span_help(span.unwrap(), msg),
+            (SuggestionKind::Note, None) => res.note(msg),
+            (SuggestionKind::Help, None) => res.help(msg),
+        }
+    }
+
+    res.emit()
+}
+
+static IS_DIRTY: AtomicBool = AtomicBool::new(false);