From d1988a17f4ceb90bcdaed79072c4b7f647c86854 Mon Sep 17 00:00:00 2001
From: arsdragonfly <arsdragonfly@gmail.com>
Date: Fri, 27 Sep 2019 16:17:02 -0400
Subject: [PATCH 1/3] Support the new deprecated tag

---
 editors/code/src/utils/diagnostics/rust.ts | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/editors/code/src/utils/diagnostics/rust.ts b/editors/code/src/utils/diagnostics/rust.ts
index 1fb1f7b6dc8..a66b52313e9 100644
--- a/editors/code/src/utils/diagnostics/rust.ts
+++ b/editors/code/src/utils/diagnostics/rust.ts
@@ -111,6 +111,19 @@ function isUnusedOrUnnecessary(rd: RustDiagnostic): boolean {
     ].includes(rd.code.code);
 }
 
+/**
+ * Determines if diagnostic is related to deprecated code
+ */
+function isDeprecated(rd: RustDiagnostic): boolean {
+    if (!rd.code) {
+        return false;
+    }
+
+    return [
+        'deprecated',
+    ].includes(rd.code.code);
+}
+
 /**
  * Converts a Rust child diagnostic to a VsCode related information
  *
@@ -233,8 +246,14 @@ export function mapRustDiagnosticToVsCode(
         vd.message += `\n${primarySpanLabel}`;
     }
 
+    vd.tags = []
+
     if (isUnusedOrUnnecessary(rd)) {
-        vd.tags = [vscode.DiagnosticTag.Unnecessary];
+        vd.tags.push(vscode.DiagnosticTag.Unnecessary);
+    }
+
+    if (isDeprecated(rd)) {
+        vd.tags.push(vscode.DiagnosticTag.Deprecated);
     }
 
     return {

From 945679e42fbefe565cb37456d3cf9cc3b0da6df5 Mon Sep 17 00:00:00 2001
From: arsdragonfly <arsdragonfly@gmail.com>
Date: Fri, 27 Sep 2019 17:33:14 -0400
Subject: [PATCH 2/3] Fix tests

---
 editors/code/src/test/utils/diagnotics/rust.test.ts | 8 ++++----
 editors/code/src/utils/diagnostics/rust.ts          | 3 +--
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/editors/code/src/test/utils/diagnotics/rust.test.ts b/editors/code/src/test/utils/diagnotics/rust.test.ts
index 7fb003fe212..327d15046f5 100644
--- a/editors/code/src/test/utils/diagnotics/rust.test.ts
+++ b/editors/code/src/test/utils/diagnotics/rust.test.ts
@@ -50,7 +50,7 @@ describe('mapRustDiagnosticToVsCode', () => {
             ].join('\n')
         );
         assert.strictEqual(diagnostic.code, 'E0053');
-        assert.strictEqual(diagnostic.tags, undefined);
+        assert.deepStrictEqual(diagnostic.tags, []);
 
         // No related information
         assert.deepStrictEqual(diagnostic.relatedInformation, []);
@@ -115,7 +115,7 @@ describe('mapRustDiagnosticToVsCode', () => {
         );
         assert.strictEqual(diagnostic.code, 'E0061');
         assert.strictEqual(diagnostic.source, 'rustc');
-        assert.strictEqual(diagnostic.tags, undefined);
+        assert.deepStrictEqual(diagnostic.tags, []);
 
         // One related information for the original definition
         const relatedInformation = diagnostic.relatedInformation;
@@ -149,7 +149,7 @@ describe('mapRustDiagnosticToVsCode', () => {
             ].join('\n')
         );
         assert.strictEqual(diagnostic.code, 'trivially_copy_pass_by_ref');
-        assert.strictEqual(diagnostic.tags, undefined);
+        assert.deepStrictEqual(diagnostic.tags, []);
 
         // One related information for the lint definition
         const relatedInformation = diagnostic.relatedInformation;
@@ -189,7 +189,7 @@ describe('mapRustDiagnosticToVsCode', () => {
         );
         assert.strictEqual(diagnostic.code, 'E0308');
         assert.strictEqual(diagnostic.source, 'rustc');
-        assert.strictEqual(diagnostic.tags, undefined);
+        assert.deepStrictEqual(diagnostic.tags, []);
 
         // No related information
         assert.deepStrictEqual(diagnostic.relatedInformation, []);
diff --git a/editors/code/src/utils/diagnostics/rust.ts b/editors/code/src/utils/diagnostics/rust.ts
index a66b52313e9..cd02ee46c9e 100644
--- a/editors/code/src/utils/diagnostics/rust.ts
+++ b/editors/code/src/utils/diagnostics/rust.ts
@@ -213,6 +213,7 @@ export function mapRustDiagnosticToVsCode(
     vd.source = source;
     vd.code = code;
     vd.relatedInformation = [];
+    vd.tags = [];
 
     for (const secondarySpan of secondarySpans) {
         const related = mapSecondarySpanToRelated(secondarySpan);
@@ -246,8 +247,6 @@ export function mapRustDiagnosticToVsCode(
         vd.message += `\n${primarySpanLabel}`;
     }
 
-    vd.tags = []
-
     if (isUnusedOrUnnecessary(rd)) {
         vd.tags.push(vscode.DiagnosticTag.Unnecessary);
     }

From 17d1405a8b4eddedaf3665fc41ff4fa17a1409a7 Mon Sep 17 00:00:00 2001
From: arsdragonfly <arsdragonfly@gmail.com>
Date: Fri, 27 Sep 2019 20:02:51 -0400
Subject: [PATCH 3/3] Fix

---
 editors/code/src/utils/diagnostics/rust.ts | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/editors/code/src/utils/diagnostics/rust.ts b/editors/code/src/utils/diagnostics/rust.ts
index cd02ee46c9e..0550d037247 100644
--- a/editors/code/src/utils/diagnostics/rust.ts
+++ b/editors/code/src/utils/diagnostics/rust.ts
@@ -119,9 +119,7 @@ function isDeprecated(rd: RustDiagnostic): boolean {
         return false;
     }
 
-    return [
-        'deprecated',
-    ].includes(rd.code.code);
+    return ['deprecated'].includes(rd.code.code);
 }
 
 /**