Merge #1931

1931: Support the new deprecated tag r=matklad a=arsdragonfly

Which is rendered as a strike-through line. Fixes #1671 .
![深度截图_选择区域_20190927162008](https://user-images.githubusercontent.com/4067473/65799714-ccb4c180-e142-11e9-8e45-ab18964605f3.png)


Co-authored-by: arsdragonfly <[email protected]>

1 files changed, 17 insertions, 1 deletions

diff --git a/editors/code/src/utils/diagnostics/rust.ts b/editors/code/src/utils/diagnostics/rust.ts
index 1fb1f7b6d..0550d0372 100644
--- a/editors/code/src/utils/diagnostics/rust.ts
+++ b/editors/code/src/utils/diagnostics/rust.ts
@@ -112,6 +112,17 @@ function isUnusedOrUnnecessary(rd: RustDiagnostic): boolean {
 }
 
 /**
+ * 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
  *
  * This can have three outcomes:
@@ -200,6 +211,7 @@ export function mapRustDiagnosticToVsCode(
     vd.source = source;
     vd.code = code;
     vd.relatedInformation = [];
+    vd.tags = [];
 
     for (const secondarySpan of secondarySpans) {
         const related = mapSecondarySpanToRelated(secondarySpan);
@@ -234,7 +246,11 @@ export function mapRustDiagnosticToVsCode(
     }
 
     if (isUnusedOrUnnecessary(rd)) {
-        vd.tags = [vscode.DiagnosticTag.Unnecessary];
+        vd.tags.push(vscode.DiagnosticTag.Unnecessary);
+    }
+
+    if (isDeprecated(rd)) {
+        vd.tags.push(vscode.DiagnosticTag.Deprecated);
     }
 
     return {