Merge pull request swiftlang#58698 from rintaro/ide-completion-rdar92511769

[CodeCompletion] Suggest 'actor' decl introducer keyword

Author: rintaro

lib/IDE/CodeCompletion.cpp

@@ -671,11 +671,6 @@ static void addDeclKeywords(CodeCompletionResultSink &Sink, DeclContext *DC,
     case CodeCompletionKeywordKind::kw_enum:
     case CodeCompletionKeywordKind::kw_extension:
       return true;
-    case CodeCompletionKeywordKind::None:
-      if (DAK && *DAK == DeclAttrKind::DAK_Actor) {
-        return true;
-      }
-      break;
     default:
       break;
     }
@@ -782,12 +777,20 @@ static void addDeclKeywords(CodeCompletionResultSink &Sink, DeclContext *DC,
         DeclAttribute::isConcurrencyOnly(*DAK))
       return;
 
-    addKeyword(Sink, Name, Kind, /*TypeAnnotation=*/"", getFlair(Kind, DAK));
+    CodeCompletionFlair flair = getFlair(Kind, DAK);
+
+    // Special case for 'actor'. Get the same flair with 'kw_class'.
+    if (Kind == CodeCompletionKeywordKind::None && Name == "actor")
+      flair = getFlair(CodeCompletionKeywordKind::kw_class, None);
+
+    addKeyword(Sink, Name, Kind, /*TypeAnnotation=*/"", flair);
   };
 
 #define DECL_KEYWORD(kw)                                                       \
   AddDeclKeyword(#kw, CodeCompletionKeywordKind::kw_##kw, None);
 #include "swift/Syntax/TokenKinds.def"
+  // Manually add "actor" because it's a contextual keyword.
+  AddDeclKeyword("actor", CodeCompletionKeywordKind::None, None);
 
   // Context-sensitive keywords.
   auto AddCSKeyword = [&](StringRef Name, DeclAttrKind Kind) {

test/IDE/complete_keywords.swift

@@ -6,6 +6,7 @@
 
 // KW_DECL: Begin completions
 // KW_DECL-DAG: Keyword[class]/None: class{{; name=.+$}}
+// KW_DECL-DAG: Keyword/None: actor{{; name=.+$}}
 // KW_DECL-DAG: Keyword/None: convenience{{; name=.+$}}
 // KW_DECL-DAG: Keyword[deinit]/None: deinit{{; name=.+$}}
 // KW_DECL-DAG: Keyword/None: dynamic{{; name=.+$}}
@@ -42,6 +43,7 @@
 
 // KW_DECL_PROTOCOL: Begin completions
 // KW_DECL_PROTOCOL-DAG: Keyword[class]/None/Flair[RareKeyword]: class{{; name=.+$}}
+// KW_DECL_PROTOCOL-DAG: Keyword/None/Flair[RareKeyword]: actor{{; name=.+$}}
 // KW_DECL_PROTOCOL-DAG: Keyword/None: convenience{{; name=.+$}}
 // KW_DECL_PROTOCOL-DAG: Keyword[deinit]/None: deinit{{; name=.+$}}
 // KW_DECL_PROTOCOL-DAG: Keyword/None: dynamic{{; name=.+$}}
@@ -78,6 +80,7 @@
 
 // KW_DECL_TYPECONTEXT: Begin completions
 // KW_DECL_TYPECONTEXT-DAG: Keyword[class]/None: class{{; name=.+$}}
+// KW_DECL_TYPECONTEXT-DAG: Keyword/None: actor{{; name=.+$}}
 // KW_DECL_TYPECONTEXT-DAG: Keyword/None: convenience{{; name=.+$}}
 // KW_DECL_TYPECONTEXT-DAG: Keyword[deinit]/None: deinit{{; name=.+$}}
 // KW_DECL_TYPECONTEXT-DAG: Keyword/None: dynamic{{; name=.+$}}
@@ -118,6 +121,7 @@
 // Declaration keywords.
 //
 // KW_DECL_STMT_TOPLEVEL-DAG: Keyword[class]/None: class{{; name=.+$}}
+// KW_DECL_STMT_TOPLEVEL-DAG: Keyword/None: actor{{; name=.+$}}
 // KW_DECL_STMT_TOPLEVEL-DAG: Keyword/None: convenience{{; name=.+$}}
 // KW_DECL_STMT_TOPLEVEL-DAG: Keyword[deinit]/None: deinit{{; name=.+$}}
 // KW_DECL_STMT_TOPLEVEL-DAG: Keyword/None: dynamic{{; name=.+$}}

test/SourceKit/CodeComplete/complete_override.swift.response

@@ -30,6 +30,16 @@
       key.typerelation: source.codecompletion.typerelation.notapplicable,
       key.num_bytes_to_erase: 0
     },
+    {
+      key.kind: source.lang.swift.keyword,
+      key.name: "actor",
+      key.sourcetext: "actor",
+      key.description: "actor",
+      key.typename: "",
+      key.context: source.codecompletion.context.none,
+      key.typerelation: source.codecompletion.typerelation.notapplicable,
+      key.num_bytes_to_erase: 0
+    },
     {
       key.kind: source.lang.swift.keyword,
       key.name: "associatedtype",