From c2d4209f85f46cc91163bc47cc43db252c94acf6 Mon Sep 17 00:00:00 2001
From: Stefan Weigl-Bosker <stefan@s00.xyz>
Date: Thu, 19 Feb 2026 18:51:48 -0500
Subject: [willow]: more cleanup, tests (#12)

---
 willow/lib/IR/DiagnosticEngine.cpp | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 willow/lib/IR/DiagnosticEngine.cpp

(limited to 'willow/lib/IR/DiagnosticEngine.cpp')

diff --git a/willow/lib/IR/DiagnosticEngine.cpp b/willow/lib/IR/DiagnosticEngine.cpp
new file mode 100644
index 0000000..f0cc280
--- /dev/null
+++ b/willow/lib/IR/DiagnosticEngine.cpp
@@ -0,0 +1,28 @@
+#include <willow/IR/DiagnosticEngine.h>
+
+namespace willow {
+
+void DiagnosticEngine::report(Diagnostic d) {
+  if (handler)
+    handler(std::move(d));
+}
+
+DiagnosticBuilder::DiagnosticBuilder(DiagnosticBuilder &&other) noexcept
+    : engine(std::exchange(other.engine, nullptr)), diag(std::move(other.diag)),
+      os(std::move(other.os)) {}
+DiagnosticBuilder::~DiagnosticBuilder() {
+  if (!engine) // was moved from
+    return;
+
+  diag.message += os.str();
+  engine->report(std::move(diag));
+}
+
+DiagnosticBuilder::DiagnosticBuilder(DiagnosticEngine &eng, Severity severity,
+                                     std::optional<Location> loc)
+    : engine(&eng) {
+  diag.severity = severity;
+  diag.location = loc;
+}
+
+} // namespace willow
-- 
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