From 3eb0745b58f1c35834e361d112c5a5b1053edc66 Mon Sep 17 00:00:00 2001
From: Andrei Klunnyi <andrei.klunnyi@jetbrains.com>
Date: Thu, 17 Dec 2020 15:46:17 +0100
Subject: [PATCH] KTIJ-650 [Code completion]: "sealed interface" is for 1.5+
 only

---
 .../org/jetbrains/kotlin/idea/completion/KeywordCompletion.kt   | 2 ++
 idea/idea-completion/testData/keywords/AfterClassProperty.kt    | 2 ++
 idea/idea-completion/testData/keywords/AfterClasses.kt          | 2 ++
 .../testData/keywords/AfterClasses_LangLevel10.kt               | 2 --
 .../testData/keywords/AfterClasses_LangLevel11.kt               | 2 --
 idea/idea-completion/testData/keywords/AfterFuns.kt             | 2 ++
 .../testData/keywords/GlobalPropertyAccessors.kt                | 2 ++
 .../idea-completion/testData/keywords/InAnnotationClassScope.kt | 2 ++
 idea/idea-completion/testData/keywords/InClassBeforeFun.kt      | 2 ++
 idea/idea-completion/testData/keywords/InClassScope.kt          | 2 ++
 idea/idea-completion/testData/keywords/InEnumScope2.kt          | 2 ++
 idea/idea-completion/testData/keywords/InInterfaceScope.kt      | 2 ++
 idea/idea-completion/testData/keywords/InObjectScope.kt         | 2 ++
 .../idea-completion/testData/keywords/InTopScopeAfterPackage.kt | 2 ++
 idea/idea-completion/testData/keywords/PropertyAccessors.kt     | 2 ++
 idea/idea-completion/testData/keywords/PropertyAccessors2.kt    | 2 ++
 idea/idea-completion/testData/keywords/PropertySetter.kt        | 2 ++
 idea/idea-completion/testData/keywords/SealedWithName.kt        | 2 ++
 idea/idea-completion/testData/keywords/SealedWithoutName.kt     | 2 ++
 idea/idea-completion/testData/keywords/TopScope.kt              | 2 ++
 idea/idea-completion/testData/keywords/TopScope3-.kt            | 2 ++
 idea/idea-completion/testData/keywords/topScope2.kt             | 2 ++
 22 files changed, 40 insertions(+), 4 deletions(-)

diff --git a/idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/KeywordCompletion.kt b/idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/KeywordCompletion.kt
index 9317092d4fe..3e5c75b2491 100644
--- a/idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/KeywordCompletion.kt
+++ b/idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/KeywordCompletion.kt
@@ -122,11 +122,13 @@ object KeywordCompletion {
 
     fun complete(position: PsiElement, prefixMatcher: PrefixMatcher, isJvmModule: Boolean, consumer: (LookupElement) -> Unit) {
         if (!GENERAL_FILTER.isAcceptable(position, position)) return
+        val sealedInterfacesEnabled = position.languageVersionSettings.supportsFeature(LanguageFeature.SealedInterfaces)
 
         val parserFilter = buildFilter(position)
         for (keywordToken in ALL_KEYWORDS) {
             val nextKeywords = keywordToken.getNextPossibleKeywords(position) ?: setOf(null)
             nextKeywords.forEach {
+                if (keywordToken == SEALED_KEYWORD && it == INTERFACE_KEYWORD && !sealedInterfacesEnabled) return@forEach
                 handleCompoundKeyword(position, keywordToken, it, isJvmModule, prefixMatcher, parserFilter, consumer)
             }
         }
diff --git a/idea/idea-completion/testData/keywords/AfterClassProperty.kt b/idea/idea-completion/testData/keywords/AfterClassProperty.kt
index 788cee4e10a..cb2c81431a1 100644
--- a/idea/idea-completion/testData/keywords/AfterClassProperty.kt
+++ b/idea/idea-completion/testData/keywords/AfterClassProperty.kt
@@ -1,3 +1,5 @@
+// COMPILER_ARGUMENTS: -XXLanguage:+SealedInterfaces -XXLanguage:+MultiPlatformProjects
+
 class MouseMovedEventArgs
 {
   public val X : Int = 0
diff --git a/idea/idea-completion/testData/keywords/AfterClasses.kt b/idea/idea-completion/testData/keywords/AfterClasses.kt
index 6d16b266393..9a68457c1bc 100644
--- a/idea/idea-completion/testData/keywords/AfterClasses.kt
+++ b/idea/idea-completion/testData/keywords/AfterClasses.kt
@@ -1,3 +1,5 @@
+// COMPILER_ARGUMENTS: -XXLanguage:+SealedInterfaces -XXLanguage:+MultiPlatformProjects
+
 class A {
     fun foo() {
         bar()
diff --git a/idea/idea-completion/testData/keywords/AfterClasses_LangLevel10.kt b/idea/idea-completion/testData/keywords/AfterClasses_LangLevel10.kt
index d6dd4d72438..17727796838 100644
--- a/idea/idea-completion/testData/keywords/AfterClasses_LangLevel10.kt
+++ b/idea/idea-completion/testData/keywords/AfterClasses_LangLevel10.kt
@@ -33,8 +33,6 @@ class B {
 // EXIST:  infix
 // EXIST:  sealed class
 // EXIST:  sealed class AfterClasses_LangLevel10
-// EXIST:  sealed interface AfterClasses_LangLevel10
-// EXIST:  sealed interface
 // EXIST:  data class
 // EXIST:  { "lookupString":"data class", "itemText":"data class", "tailText":" AfterClasses_LangLevel10(...)", "attributes":"bold" }
 // EXIST:  inline
diff --git a/idea/idea-completion/testData/keywords/AfterClasses_LangLevel11.kt b/idea/idea-completion/testData/keywords/AfterClasses_LangLevel11.kt
index 7263e242a82..24bbfe25aad 100644
--- a/idea/idea-completion/testData/keywords/AfterClasses_LangLevel11.kt
+++ b/idea/idea-completion/testData/keywords/AfterClasses_LangLevel11.kt
@@ -33,8 +33,6 @@ class B {
 // EXIST:  infix
 // EXIST:  sealed class
 // EXIST:  sealed class AfterClasses_LangLevel11
-// EXIST:  sealed interface AfterClasses_LangLevel11
-// EXIST:  sealed interface
 // EXIST:  data class
 // EXIST:  { "lookupString":"data class", "itemText":"data class", "tailText":" AfterClasses_LangLevel11(...)", "attributes":"bold" }
 // EXIST:  inline
diff --git a/idea/idea-completion/testData/keywords/AfterFuns.kt b/idea/idea-completion/testData/keywords/AfterFuns.kt
index 3f915220f47..6b35b3680da 100644
--- a/idea/idea-completion/testData/keywords/AfterFuns.kt
+++ b/idea/idea-completion/testData/keywords/AfterFuns.kt
@@ -1,3 +1,5 @@
+// COMPILER_ARGUMENTS: -XXLanguage:+SealedInterfaces -XXLanguage:+MultiPlatformProjects
+
 class A {
     fun foo() {
         bar()
diff --git a/idea/idea-completion/testData/keywords/GlobalPropertyAccessors.kt b/idea/idea-completion/testData/keywords/GlobalPropertyAccessors.kt
index ab7873fa77e..fe02a7cc9c2 100644
--- a/idea/idea-completion/testData/keywords/GlobalPropertyAccessors.kt
+++ b/idea/idea-completion/testData/keywords/GlobalPropertyAccessors.kt
@@ -1,3 +1,5 @@
+// COMPILER_ARGUMENTS: -XXLanguage:+SealedInterfaces -XXLanguage:+MultiPlatformProjects
+
 fun foo() {
     bar()
 }
diff --git a/idea/idea-completion/testData/keywords/InAnnotationClassScope.kt b/idea/idea-completion/testData/keywords/InAnnotationClassScope.kt
index cc49effaff9..35d9db37c7f 100644
--- a/idea/idea-completion/testData/keywords/InAnnotationClassScope.kt
+++ b/idea/idea-completion/testData/keywords/InAnnotationClassScope.kt
@@ -1,3 +1,5 @@
+// COMPILER_ARGUMENTS: -XXLanguage:+SealedInterfaces -XXLanguage:+MultiPlatformProjects
+
 annotation class Test {
     <caret>
 }
diff --git a/idea/idea-completion/testData/keywords/InClassBeforeFun.kt b/idea/idea-completion/testData/keywords/InClassBeforeFun.kt
index ebc5751c42d..27161fe28ae 100644
--- a/idea/idea-completion/testData/keywords/InClassBeforeFun.kt
+++ b/idea/idea-completion/testData/keywords/InClassBeforeFun.kt
@@ -1,3 +1,5 @@
+// COMPILER_ARGUMENTS: -XXLanguage:+SealedInterfaces -XXLanguage:+MultiPlatformProjects
+
 public class Test {
 
     <caret>
diff --git a/idea/idea-completion/testData/keywords/InClassScope.kt b/idea/idea-completion/testData/keywords/InClassScope.kt
index de5a03acfe6..863eb38b6ca 100644
--- a/idea/idea-completion/testData/keywords/InClassScope.kt
+++ b/idea/idea-completion/testData/keywords/InClassScope.kt
@@ -1,3 +1,5 @@
+// COMPILER_ARGUMENTS: -XXLanguage:+SealedInterfaces -XXLanguage:+MultiPlatformProjects
+
 class TestClass {
     <caret>
 }
diff --git a/idea/idea-completion/testData/keywords/InEnumScope2.kt b/idea/idea-completion/testData/keywords/InEnumScope2.kt
index 2251838ea0f..f21931454f6 100644
--- a/idea/idea-completion/testData/keywords/InEnumScope2.kt
+++ b/idea/idea-completion/testData/keywords/InEnumScope2.kt
@@ -1,3 +1,5 @@
+// COMPILER_ARGUMENTS: -XXLanguage:+SealedInterfaces -XXLanguage:+MultiPlatformProjects
+
 enum class Test {
     ;
 
diff --git a/idea/idea-completion/testData/keywords/InInterfaceScope.kt b/idea/idea-completion/testData/keywords/InInterfaceScope.kt
index 11689d4e8de..b553f51cdb0 100644
--- a/idea/idea-completion/testData/keywords/InInterfaceScope.kt
+++ b/idea/idea-completion/testData/keywords/InInterfaceScope.kt
@@ -1,3 +1,5 @@
+// COMPILER_ARGUMENTS: -XXLanguage:+SealedInterfaces -XXLanguage:+MultiPlatformProjects
+
 interface Test {
     <caret>
 }
diff --git a/idea/idea-completion/testData/keywords/InObjectScope.kt b/idea/idea-completion/testData/keywords/InObjectScope.kt
index 8f8fc86717b..291e5607b94 100644
--- a/idea/idea-completion/testData/keywords/InObjectScope.kt
+++ b/idea/idea-completion/testData/keywords/InObjectScope.kt
@@ -1,3 +1,5 @@
+// COMPILER_ARGUMENTS: -XXLanguage:+SealedInterfaces -XXLanguage:+MultiPlatformProjects
+
 object Test {
     <caret>
 }
diff --git a/idea/idea-completion/testData/keywords/InTopScopeAfterPackage.kt b/idea/idea-completion/testData/keywords/InTopScopeAfterPackage.kt
index 282b0c8d8df..e3c85bb5a96 100644
--- a/idea/idea-completion/testData/keywords/InTopScopeAfterPackage.kt
+++ b/idea/idea-completion/testData/keywords/InTopScopeAfterPackage.kt
@@ -1,3 +1,5 @@
+// COMPILER_ARGUMENTS: -XXLanguage:+SealedInterfaces -XXLanguage:+MultiPlatformProjects
+
 package Test
 
 <caret>
diff --git a/idea/idea-completion/testData/keywords/PropertyAccessors.kt b/idea/idea-completion/testData/keywords/PropertyAccessors.kt
index 8a6e6ace135..f52b8114536 100644
--- a/idea/idea-completion/testData/keywords/PropertyAccessors.kt
+++ b/idea/idea-completion/testData/keywords/PropertyAccessors.kt
@@ -1,3 +1,5 @@
+// COMPILER_ARGUMENTS: -XXLanguage:+SealedInterfaces -XXLanguage:+MultiPlatformProjects
+
 class Some {
     var a : Int
         <caret>
diff --git a/idea/idea-completion/testData/keywords/PropertyAccessors2.kt b/idea/idea-completion/testData/keywords/PropertyAccessors2.kt
index 269f3f45e15..31e4eb9ae7f 100644
--- a/idea/idea-completion/testData/keywords/PropertyAccessors2.kt
+++ b/idea/idea-completion/testData/keywords/PropertyAccessors2.kt
@@ -1,3 +1,5 @@
+// COMPILER_ARGUMENTS: -XXLanguage:+SealedInterfaces -XXLanguage:+MultiPlatformProjects
+
 class Some {
     var a : Int = 1
         <caret>
diff --git a/idea/idea-completion/testData/keywords/PropertySetter.kt b/idea/idea-completion/testData/keywords/PropertySetter.kt
index f950db00539..fc6e6b730b2 100644
--- a/idea/idea-completion/testData/keywords/PropertySetter.kt
+++ b/idea/idea-completion/testData/keywords/PropertySetter.kt
@@ -1,3 +1,5 @@
+// COMPILER_ARGUMENTS: -XXLanguage:+SealedInterfaces -XXLanguage:+MultiPlatformProjects
+
 class Some {
     var a : Int
         get() = 0
diff --git a/idea/idea-completion/testData/keywords/SealedWithName.kt b/idea/idea-completion/testData/keywords/SealedWithName.kt
index 345a354e786..5487c20aaab 100644
--- a/idea/idea-completion/testData/keywords/SealedWithName.kt
+++ b/idea/idea-completion/testData/keywords/SealedWithName.kt
@@ -1,3 +1,5 @@
+// COMPILER_ARGUMENTS: -XXLanguage:+SealedInterfaces -XXLanguage:+MultiPlatformProjects
+
 seal<caret>
 // EXIST: "sealed class SealedWithName"
 // EXIST: "sealed interface SealedWithName"
diff --git a/idea/idea-completion/testData/keywords/SealedWithoutName.kt b/idea/idea-completion/testData/keywords/SealedWithoutName.kt
index de4abff9998..8bef92d7f4e 100644
--- a/idea/idea-completion/testData/keywords/SealedWithoutName.kt
+++ b/idea/idea-completion/testData/keywords/SealedWithoutName.kt
@@ -1,3 +1,5 @@
+// COMPILER_ARGUMENTS: -XXLanguage:+SealedInterfaces -XXLanguage:+MultiPlatformProjects
+
 class OuterClass {
     seal<caret>
 }
diff --git a/idea/idea-completion/testData/keywords/TopScope.kt b/idea/idea-completion/testData/keywords/TopScope.kt
index 47b03855278..6b8ea73b427 100644
--- a/idea/idea-completion/testData/keywords/TopScope.kt
+++ b/idea/idea-completion/testData/keywords/TopScope.kt
@@ -1,3 +1,5 @@
+// COMPILER_ARGUMENTS: -XXLanguage:+SealedInterfaces -XXLanguage:+MultiPlatformProjects
+
 <caret>
 
 // EXIST:  abstract
diff --git a/idea/idea-completion/testData/keywords/TopScope3-.kt b/idea/idea-completion/testData/keywords/TopScope3-.kt
index 63e8eaf6465..fd56753c3b5 100644
--- a/idea/idea-completion/testData/keywords/TopScope3-.kt
+++ b/idea/idea-completion/testData/keywords/TopScope3-.kt
@@ -1,3 +1,5 @@
+// COMPILER_ARGUMENTS: -XXLanguage:+SealedInterfaces -XXLanguage:+MultiPlatformProjects
+
 <caret>
 
 // EXIST:  abstract
diff --git a/idea/idea-completion/testData/keywords/topScope2.kt b/idea/idea-completion/testData/keywords/topScope2.kt
index 63e8eaf6465..fd56753c3b5 100644
--- a/idea/idea-completion/testData/keywords/topScope2.kt
+++ b/idea/idea-completion/testData/keywords/topScope2.kt
@@ -1,3 +1,5 @@
+// COMPILER_ARGUMENTS: -XXLanguage:+SealedInterfaces -XXLanguage:+MultiPlatformProjects
+
 <caret>
 
 // EXIST:  abstract