[CodeCompletion] Exclude precedence groups from type completion

Author: rintaro

lib/IDE/CodeCompletion.cpp

@@ -5695,7 +5695,6 @@ void swift::ide::copyCodeCompletionResults(CodeCompletionResultSink &targetSink,
       if (R->getKind() != CodeCompletionResult::Declaration)
         return false;
       switch(R->getAssociatedDeclKind()) {
-      case CodeCompletionDeclKind::PrecedenceGroup:
       case CodeCompletionDeclKind::Module:
       case CodeCompletionDeclKind::Class:
       case CodeCompletionDeclKind::Struct:
@@ -5705,6 +5704,7 @@ void swift::ide::copyCodeCompletionResults(CodeCompletionResultSink &targetSink,
       case CodeCompletionDeclKind::AssociatedType:
       case CodeCompletionDeclKind::GenericTypeParam:
         return true;
+      case CodeCompletionDeclKind::PrecedenceGroup:
       case CodeCompletionDeclKind::EnumElement:
       case CodeCompletionDeclKind::Constructor:
       case CodeCompletionDeclKind::Destructor:

test/IDE/complete_decl_attribute.swift

@@ -149,6 +149,7 @@ struct _S {
 // ON_PROPERTY-DAG: Keyword/None:                       GKInspectable[#Var Attribute#]; name=GKInspectable
 // ON_PROPERTY-NOT: Keyword
 // ON_PROPERTY: Decl[Struct]/CurrModule:            MyStruct[#MyStruct#]; name=MyStruct
+// ON_PROPERTY-NOT: Decl[PrecedenceGroup]
 // ON_PROPERTY: End completions
 
   @#^ON_METHOD^#
@@ -192,6 +193,7 @@ struct _S {
 // ON_MEMBER_LAST-DAG: Keyword/None:                       _propertyWrapper[#Declaration Attribute#]; name=_propertyWrapper
 // ON_MEMBER_LAST-NOT: Keyword
 // ON_MEMBER_LAST: Decl[Struct]/CurrModule:            MyStruct[#MyStruct#]; name=MyStruct
+// ON_MEMBER_LAST-NOT: Decl[PrecedenceGroup]
 // ON_MEMBER_LAST: End completions
 }