Allow empty blocks for classes and function literals

annotations/com/intellij/formatting/annotations.xml

@@ -1,4 +1,10 @@
 <root>
+  <item name='com.intellij.formatting.Spacing com.intellij.formatting.Spacing createKeepingFirstColumnSpacing(int, int, boolean, int)'>
+    <annotation name='org.jetbrains.annotations.NotNull'/>
+  </item>
+  <item name='com.intellij.formatting.Spacing com.intellij.formatting.Spacing createSpacing(int, int, int, boolean, int)'>
+    <annotation name='org.jetbrains.annotations.NotNull'/>
+  </item>
   <item name='com.intellij.formatting.SpacingBuilder com.intellij.formatting.SpacingBuilder append(com.intellij.formatting.SpacingBuilder)'>
     <annotation name='org.jetbrains.annotations.NotNull'/>
   </item>

idea/src/org/jetbrains/jet/plugin/formatter/KotlinSpacingBuilder.kt

@@ -77,7 +77,11 @@ class KotlinSpacingBuilder(val codeStyleSettings: CodeStyleSettings) {
             }
         }
 
-        fun customRule(block: (ASTBlock, ASTBlock, ASTBlock) -> Spacing?) {
+        fun spacing(spacing: Spacing) {
+            newRule { (parent, left, right) -> spacing }
+        }
+
+        fun customRule(block: (parent: ASTBlock, left: ASTBlock, right: ASTBlock) -> Spacing?) {
             newRule(block)
         }
 

idea/src/org/jetbrains/jet/plugin/formatter/kotlinSpacingRules.kt

@@ -57,6 +57,8 @@ fun createSpacingBuilder(settings: CodeStyleSettings): KotlinSpacingBuilder {
             between(FUN, PROPERTY).blankLines(1)
 
             // =============== Spacing ================
+            betweenInside(LBRACE, RBRACE, CLASS_BODY).spaces(0)
+
             before(COMMA).spaceIf(jetCommonSettings.SPACE_BEFORE_COMMA)
             after(COMMA).spaceIf(jetCommonSettings.SPACE_AFTER_COMMA)
 
@@ -225,6 +227,11 @@ fun createSpacingBuilder(settings: CodeStyleSettings): KotlinSpacingBuilder {
                        right = BLOCK)
                     .lineBreakIfLineBreakInParent(numSpacesOtherwise = 1)
 
+            inPosition(parent = FUNCTION_LITERAL,
+                       left = LBRACE,
+                       right = RBRACE)
+                    .spacing(Spacing.createSpacing(0, 1, 0, settings.KEEP_LINE_BREAKS, settings.KEEP_BLANK_LINES_IN_CODE))
+
             inPosition(parent = FUNCTION_LITERAL,
                        right = RBRACE)
                     .lineBreakIfLineBreakInParent(numSpacesOtherwise = spacesInSimpleFunction)

idea/testData/formatter/EmptyBlocks.after.inv.kt

@@ -0,0 +1,41 @@
+class Test {}
+
+class Other {
+    class object {}
+}
+
+object TestObject {}
+
+val testVal = {}
+
+val testObject = object {}
+
+fun foo(f: (String) -> Unit = {}) = {}
+
+fun call() {
+    foo({})
+    foo {}
+}
+
+class Test1 {
+}
+
+class Other1 {
+    class object {
+    }
+}
+
+object TestObject1 {
+}
+
+val testVal1 = { }
+
+val testObject1 = object {
+}
+
+fun foo1(f: (String) -> Unit = { }) = { }
+
+fun call1() {
+    foo1({ })
+    foo1 { }
+}

idea/testData/formatter/EmptyBlocks.kt

@@ -0,0 +1,41 @@
+class Test {}
+
+class Other {
+    class object {}
+}
+
+object TestObject {}
+
+val testVal = {}
+
+val testObject = object {}
+
+fun foo(f: (String) -> Unit = {}) = {}
+
+fun call() {
+    foo({})
+    foo {}
+}
+
+class Test1 {
+}
+
+class Other1 {
+    class object {
+    }
+}
+
+object TestObject1 {
+}
+
+val testVal1 = { }
+
+val testObject1 = object {
+}
+
+fun foo1(f: (String) -> Unit = { }) = { }
+
+fun call1() {
+    foo1({ })
+    foo1 { }
+}

idea/testData/formatter/SingleLineFunctionLiteral.after.inv.kt

@@ -4,6 +4,10 @@ fun test(some: (Int) -> Int) {
 fun foo() = test() {it}
 val function = test {(a: Int) -> a}
 val function1 = test {a : Int -> a}
-val function2 = test {}
+val function2 = test { }
+val function3 = test {}
+val function4 = test { }
+val function5 = test {
+}
 
 // SET_TRUE: INSERT_WHITESPACES_IN_SIMPLE_ONE_LINE_METHOD

idea/testData/formatter/SingleLineFunctionLiteral.after.kt

@@ -5,5 +5,9 @@ fun foo() = test() { it }
 val function = test {(a: Int) -> a }
 val function1 = test { a : Int -> a }
 val function2 = test { }
+val function3 = test {}
+val function4 = test { }
+val function5 = test {
+}
 
 // SET_TRUE: INSERT_WHITESPACES_IN_SIMPLE_ONE_LINE_METHOD

idea/testData/formatter/SingleLineFunctionLiteral.kt

@@ -5,5 +5,9 @@ fun foo() = test() { it }
 val function = test { (a: Int) -> a }
 val function1 = test {a : Int -> a}
 val function2 = test {    }
+val function3 = test {}
+val function4 = test { }
+val function5 = test {
+}
 
 // SET_TRUE: INSERT_WHITESPACES_IN_SIMPLE_ONE_LINE_METHOD

idea/testData/formatter/SpaceAroundExtendColonInObjects.after.inv.kt

@@ -13,11 +13,9 @@ object Some3
 
         A
 
-val a = object: A {
+val a = object: A {}
-}
 
-val b = object: A {
+val b = object: A {}
-}
 
 class B {
     class object: A {

idea/testData/formatter/SpaceAroundExtendColonInObjects.after.kt

@@ -13,11 +13,9 @@ object Some3
 
         A
 
-val a = object :A {
+val a = object :A {}
-}
 
-val b = object :A {
+val b = object :A {}
-}
 
 class B {
     class object :A {

idea/tests/org/jetbrains/jet/formatter/JetFormatterTestGenerated.java

@@ -504,6 +504,11 @@ public class JetFormatterTestGenerated extends AbstractJetFormatterTest {
             doTestInverted("idea/testData/formatter/ElseOnNewLine.after.inv.kt");
         }
         
+        @TestMetadata("EmptyBlocks.after.inv.kt")
+        public void testEmptyBlocks() throws Exception {
+            doTestInverted("idea/testData/formatter/EmptyBlocks.after.inv.kt");
+        }
+        
         @TestMetadata("ForLineBreak.after.inv.kt")
         public void testForLineBreak() throws Exception {
             doTestInverted("idea/testData/formatter/ForLineBreak.after.inv.kt");

j2k/tests/testData/ast/class/class.ide.kt

@@ -1,2 +1 @@
-class Test() {
+class Test() {}
-}

j2k/tests/testData/ast/class/class.kt

@@ -1,2 +1 @@
-open class Test() {
+open class Test() {}
-}

j2k/tests/testData/ast/class/emptyClass.ide.kt

@@ -1,2 +1 @@
-class A() {
+class A() {}
-}

j2k/tests/testData/ast/class/emptyClass.kt

@@ -1,2 +1 @@
-class A() {
+class A() {}
-}

j2k/tests/testData/ast/class/extendsOneClassAndImplementsOneInterface.ide.kt

@@ -1,2 +1 @@
-class A() : Base(), I {
+class A() : Base(), I {}
-}

j2k/tests/testData/ast/class/extendsOneClassAndImplementsOneInterface.kt

@@ -1,2 +1 @@
-class A() : Base(), I {
+class A() : Base(), I {}
-}

j2k/tests/testData/ast/class/extendsOneClassAndImplementsSeveralInterfaces.ide.kt

@@ -1,2 +1 @@
-class A() : Base(), I0, I1, I2 {
+class A() : Base(), I0, I1, I2 {}
-}

j2k/tests/testData/ast/class/extendsOneClassAndImplementsSeveralInterfaces.kt

@@ -1,2 +1 @@
-class A() : Base(), I0, I1, I2 {
+class A() : Base(), I0, I1, I2 {}
-}

j2k/tests/testData/ast/class/finalClass.ide.kt

@@ -1,2 +1 @@
-class Test() {
+class Test() {}
-}

j2k/tests/testData/ast/class/finalClass.kt

@@ -1,2 +1 @@
-class Test() {
+class Test() {}
-}

j2k/tests/testData/ast/class/genericClass.ide.kt

@@ -1,2 +1 @@
-class Entry<K, V>() {
+class Entry<K, V>() {}
-}

j2k/tests/testData/ast/class/genericClass.kt

@@ -1,2 +1 @@
-class Entry<K, V>() {
+class Entry<K, V>() {}
-}

j2k/tests/testData/ast/class/innerEmptyClass.ide.kt

@@ -1,4 +1,3 @@
 class A() {
-    class B() {
+    class B() {}
-    }
 }

j2k/tests/testData/ast/class/innerEmptyClass.kt

@@ -1,4 +1,3 @@
 class A() {
-    class B() {
+    class B() {}
-    }
 }

j2k/tests/testData/ast/class/innerStaticClass.ide.kt

@@ -1,6 +1,5 @@
 class S() {
     class object {
-        class Inner() {
+        class Inner() {}
-        }
     }
 }

j2k/tests/testData/ast/class/innerStaticClass.kt

@@ -1,6 +1,5 @@
 class S() {
     class object {
-        open class Inner() {
+        open class Inner() {}
-        }
     }
 }

j2k/tests/testData/ast/class/internalClass.ide.kt

@@ -1,2 +1 @@
-class Test() {
+class Test() {}
-}

j2k/tests/testData/ast/class/internalClass.kt

@@ -1,2 +1 @@
-open class Test() {
+open class Test() {}
-}

j2k/tests/testData/ast/class/pivateClass.ide.kt

@@ -1,2 +1 @@
-private class Test() {
+private class Test() {}
-}

j2k/tests/testData/ast/class/pivateClass.kt

@@ -1,2 +1 @@
-private open class Test() {
+private open class Test() {}
-}

j2k/tests/testData/ast/class/protectedClass.ide.kt

@@ -1,2 +1 @@
-protected class Test() {
+protected class Test() {}
-}

j2k/tests/testData/ast/class/protectedClass.kt

@@ -1,2 +1 @@
-protected open class Test() {
+protected open class Test() {}
-}

j2k/tests/testData/ast/class/publicClass.ide.kt

@@ -1,2 +1 @@
-public class Test() {
+public class Test() {}
-}

j2k/tests/testData/ast/class/publicClass.kt

@@ -1,2 +1 @@
-public open class Test() {
+public open class Test() {}
-}

j2k/tests/testData/ast/class/simpleInheritance.ide.kt

@@ -1,2 +1 @@
-class A() : Base() {
+class A() : Base() {}
-}

j2k/tests/testData/ast/class/simpleInheritance.kt

@@ -1,2 +1 @@
-class A() : Base() {
+class A() : Base() {}
-}

j2k/tests/testData/ast/enum/emptyEnum.ide.kt

@@ -1,2 +1 @@
-enum class A {
+enum class A {}
-}

j2k/tests/testData/ast/enum/emptyEnum.kt

@@ -1,2 +1 @@
-enum class A {
+enum class A {}
-}

j2k/tests/testData/ast/enum/enumImplementsOneInterface.ide.kt

@@ -1,2 +1 @@
-enum class A : I {
+enum class A : I {}
-}

j2k/tests/testData/ast/enum/enumImplementsOneInterface.kt

@@ -1,2 +1 @@
-enum class A : I {
+enum class A : I {}
-}

j2k/tests/testData/ast/enum/enumImplementsSeveralInterfaces.ide.kt

@@ -1,2 +1 @@
-enum class A : I0, I1, I2 {
+enum class A : I0, I1, I2 {}
-}

j2k/tests/testData/ast/enum/enumImplementsSeveralInterfaces.kt

@@ -1,2 +1 @@
-enum class A : I0, I1, I2 {
+enum class A : I0, I1, I2 {}
-}

j2k/tests/testData/ast/enum/internalEnum.ide.kt

@@ -1,2 +1 @@
-enum class Test {
+enum class Test {}
-}

j2k/tests/testData/ast/enum/internalEnum.kt

@@ -1,2 +1 @@
-enum class Test {
+enum class Test {}
-}

j2k/tests/testData/ast/enum/privateEnum.ide.kt

@@ -1,2 +1 @@
-private enum class Test {
+private enum class Test {}
-}

j2k/tests/testData/ast/enum/privateEnum.kt

@@ -1,2 +1 @@
-private enum class Test {
+private enum class Test {}
-}

j2k/tests/testData/ast/enum/protectedEnum.ide.kt

@@ -1,2 +1 @@
-protected enum class Test {
+protected enum class Test {}
-}

j2k/tests/testData/ast/enum/protectedEnum.kt

@@ -1,2 +1 @@
-protected enum class Test {
+protected enum class Test {}
-}

j2k/tests/testData/ast/enum/publicEnum.ide.kt

@@ -1,2 +1 @@
-public enum class Test {
+public enum class Test {}
-}

j2k/tests/testData/ast/enum/publicEnum.kt

@@ -1,2 +1 @@
-public enum class Test {
+public enum class Test {}
-}

j2k/tests/testData/ast/for/forWithEmptyBlock.ide.kt

@@ -1,7 +1,7 @@
 {
     val i = 0
     while (i < 0) {
-        { }
+        {}
         {
             j++
             i++

j2k/tests/testData/ast/for/forWithEmptyBlock.kt

@@ -1,7 +1,7 @@
 {
     var i: Int = 0
     while (i < 0) {
-        { }
+        {}
         {
             j++
             i++

j2k/tests/testData/ast/identifier/finalFieldReference.ide.kt

@@ -1,8 +1,6 @@
-class `$$$$$`() {
+class `$$$$$`() {}
-}
 
-class `$`() {
+class `$`() {}
-}
 
 class `$$`(`$$$$`: `$$$$$`) : `$`() {
     val `$$$`: `$$$$$`

j2k/tests/testData/ast/identifier/finalFieldReference.kt

@@ -1,8 +1,6 @@
-open class `$$$$$`() {
+open class `$$$$$`() {}
-}
 
-open class `$`() {
+open class `$`() {}
-}
 
 open class `$$`(`$$$$`: `$$$$$`?) : `$`() {
     val `$$$`: `$$$$$`?

j2k/tests/testData/ast/importStatement/importWithKeywords.ide.kt

@@ -2,5 +2,4 @@ package test
 
 import `as`.`type`.`val`.`var`.`fun`.`is`.`in`.`object`.`when`.`trait`.`This`
 
-class Test() {
+class Test() {}
-}

j2k/tests/testData/ast/importStatement/importWithKeywords.kt

@@ -2,5 +2,4 @@ package test
 
 import `as`.`type`.`val`.`var`.`fun`.`is`.`in`.`object`.`when`.`trait`.`This`
 
-open class Test() {
+open class Test() {}
-}

j2k/tests/testData/ast/importStatement/importWithStar.ide.kt

@@ -2,5 +2,4 @@ package org.jetbrains.jet.j2k
 
 import org.jetbrains.annotations.*
 
-public class Converter() {
+public class Converter() {}
-}

j2k/tests/testData/ast/importStatement/importWithStar.kt

@@ -2,5 +2,4 @@ package org.jetbrains.jet.j2k
 
 import org.jetbrains.annotations.*
 
-public open class Converter() {
+public open class Converter() {}
-}

j2k/tests/testData/ast/importStatement/simpleImport.ide.kt

@@ -1,4 +1,3 @@
 package org.jetbrains.jet.j2k
 
-public class Converter() {
+public class Converter() {}
-}

j2k/tests/testData/ast/importStatement/simpleImport.kt

@@ -1,4 +1,3 @@
 package org.jetbrains.jet.j2k
 
-public open class Converter() {
+public open class Converter() {}
-}

j2k/tests/testData/ast/inheritance/classOneExtendsBaseGeneric.ide.kt

@@ -1,5 +1,4 @@
-class Base<T>(name: T) {
+class Base<T>(name: T) {}
-}
 
 class One<T, K>(name: T, second: K) : Base<T>(name) {
     private var mySecond: K = 0

j2k/tests/testData/ast/inheritance/classOneExtendsBaseGeneric.kt

@@ -1,5 +1,4 @@
-open class Base<T>(name: T?) {
+open class Base<T>(name: T?) {}
-}
 
 open class One<T, K>(name: T?, second: K?) : Base<T?>(name) {
     private var mySecond: K? = null

j2k/tests/testData/ast/inheritance/classOneExtendsBaseWithOneParam.ide.kt

@@ -1,5 +1,3 @@
-class Base(name: String) {
+class Base(name: String) {}
-}
 
-class One(name: String, second: String) : Base(name) {
+class One(name: String, second: String) : Base(name) {}
-}

j2k/tests/testData/ast/inheritance/classOneExtendsBaseWithOneParam.kt

@@ -1,5 +1,3 @@
-open class Base(name: String?) {
+open class Base(name: String?) {}
-}
 
-open class One(name: String?, second: String?) : Base(name) {
+open class One(name: String?, second: String?) : Base(name) {}
-}

j2k/tests/testData/ast/inheritance/classOneExtendsBaseWithZeroParams.ide.kt

@@ -1,5 +1,3 @@
-class Base() {
+class Base() {}
-}
 
-class One() : Base() {
+class One() : Base() {}
-}

j2k/tests/testData/ast/inheritance/classOneExtendsBaseWithZeroParams.kt

@@ -1,5 +1,3 @@
-open class Base() {
+open class Base() {}
-}
 
-open class One() : Base() {
+open class One() : Base() {}
-}

j2k/tests/testData/ast/inheritance/classOneExtendsBaseWithZeroParamsNonEmptyConstructor.ide.kt

@@ -1,5 +1,4 @@
-class Base(name: String) {
+class Base(name: String) {}
-}
 
 class One(name: String, second: String) : Base(name) {
     private var mySecond: String = 0

j2k/tests/testData/ast/inheritance/classOneExtendsBaseWithZeroParamsNonEmptyConstructor.kt

@@ -1,5 +1,4 @@
-open class Base(name: String?) {
+open class Base(name: String?) {}
-}
 
 open class One(name: String?, second: String?) : Base(name) {
     private var mySecond: String? = null

j2k/tests/testData/ast/issues/kt-1048.ide.kt

@@ -1,7 +1,6 @@
 import java.util.HashMap
 
-class G<T : String>(t: T) {
+class G<T : String>(t: T) {}
-}
 
 public class Java() {
     fun test() {

j2k/tests/testData/ast/issues/kt-1048.kt

@@ -1,7 +1,6 @@
 import java.util.HashMap
 
-open class G<T : String?>(t: T?) {
+open class G<T : String?>(t: T?) {}
-}
 
 public open class Java() {
     open fun test() {

j2k/tests/testData/ast/issues/kt-809-string.ide.kt

@@ -10,8 +10,7 @@ class One() {
     }
 }
 
-class StringContainer(s: String) {
+class StringContainer(s: String) {}
-}
 
 class Test() {
     fun putString(s: String) {

j2k/tests/testData/ast/issues/kt-809-string.kt

@@ -10,8 +10,7 @@ open class One() {
     }
 }
 
-open class StringContainer(s: String?) {
+open class StringContainer(s: String?) {}
-}
 
 open class Test() {
     open fun putString(s: String?) {

j2k/tests/testData/ast/issues/kt-809.ide.kt

@@ -10,8 +10,7 @@ class One() {
     }
 }
 
-class IntContainer(i: Int) {
+class IntContainer(i: Int) {}
-}
 
 class Test() {
     fun putInt(i: Int) {

j2k/tests/testData/ast/issues/kt-809.kt

@@ -10,8 +10,7 @@ open class One() {
     }
 }
 
-open class IntContainer(i: Int) {
+open class IntContainer(i: Int) {}
-}
 
 open class Test() {
     open fun putInt(i: Int) {

j2k/tests/testData/ast/misc/packageWithClass.ide.kt

@@ -1,4 +1,3 @@
 package test
 
-class C() {
+class C() {}
-}

j2k/tests/testData/ast/misc/packageWithClass.kt

@@ -1,4 +1,3 @@
 package test
 
-class C() {
+class C() {}
-}

j2k/tests/testData/ast/misc/packageWithClasses.ide.kt

@@ -1,4 +1,2 @@
-class A() {
+class A() {}
-}
+class B() {}
-class B() {
-}

j2k/tests/testData/ast/misc/packageWithClasses.kt

@@ -1,4 +1,2 @@
-class A() {
+class A() {}
-}
+class B() {}
-class B() {
-}

j2k/tests/testData/ast/misc/packageWithOpenClass.ide.kt

@@ -1,4 +1,3 @@
 package test
 
-class C() {
+class C() {}
-}

j2k/tests/testData/ast/misc/packageWithOpenClass.kt

@@ -1,4 +1,3 @@
 package test
 
-open class C() {
+open class C() {}
-}

j2k/tests/testData/ast/newClassExpression/newClassByFullName.ide.kt

@@ -1,7 +1,6 @@
 package org.test
 
-class Library() {
+class Library() {}
-}
 
 class User() {
     fun main() {

j2k/tests/testData/ast/newClassExpression/newClassByFullName.kt

@@ -1,7 +1,6 @@
 package org.test
 
-open class Library() {
+open class Library() {}
-}
 
 open class User() {
     open fun main() {

j2k/tests/testData/ast/newClassExpression/newInnerClass.ide.kt

@@ -1,8 +1,7 @@
 package org.test
 
 class OuterClass() {
-    class InnerClass() {
+    class InnerClass() {}
-    }
 }
 
 class User() {

j2k/tests/testData/ast/newClassExpression/newInnerClass.kt

@@ -1,8 +1,7 @@
 package org.test
 
 open class OuterClass() {
-    open class InnerClass() {
+    open class InnerClass() {}
-    }
 }
 
 open class User() {

j2k/tests/testData/ast/newClassExpression/newListAndNewMember.ide.kt

@@ -2,8 +2,7 @@ package org.test
 
 import java.util.LinkedList
 
-class Member() {
+class Member() {}
-}
 
 class User() {
     fun main() {

j2k/tests/testData/ast/newClassExpression/newListAndNewMember.kt

@@ -2,8 +2,7 @@ package org.test
 
 import java.util.LinkedList
 
-open class Member() {
+open class Member() {}
-}
 
 open class User() {
     open fun main() {

j2k/tests/testData/ast/newClassExpression/newStaticInnerClass.ide.kt

@@ -2,8 +2,7 @@ package demo
 
 class Foo() {
     class object {
-        class Bar() {
+        class Bar() {}
-        }
     }
 }
 

j2k/tests/testData/ast/newClassExpression/newStaticInnerClass.kt

@@ -2,8 +2,7 @@ package demo
 
 open class Foo() {
     class object {
-        open class Bar() {
+        open class Bar() {}
-        }
     }
 }
 

j2k/tests/testData/ast/packageStatement/orgJetbrainsJetJ2kIn.ide.kt

@@ -2,5 +2,4 @@ package org.jetbrains.jet.j2k.`in`
 
 import org.jetbrains.annotations.Nullable
 
-public class Converter() {
+public class Converter() {}
-}

j2k/tests/testData/ast/packageStatement/orgJetbrainsJetJ2kIn.kt

@@ -2,5 +2,4 @@ package org.jetbrains.jet.j2k.`in`
 
 import org.jetbrains.annotations.Nullable
 
-public open class Converter() {
+public open class Converter() {}
-}

j2k/tests/testData/ast/trait/abstactInterface.ide.kt

@@ -1,2 +1 @@
-abstract trait I {
+abstract trait I {}
-}

j2k/tests/testData/ast/trait/abstactInterface.kt

@@ -1,2 +1 @@
-abstract trait I {
+abstract trait I {}
-}

j2k/tests/testData/ast/trait/emptyInterface.ide.kt

@@ -1,2 +1 @@
-trait A {
+trait A {}
-}

j2k/tests/testData/ast/trait/emptyInterface.kt

@@ -1,2 +1 @@
-trait A {
+trait A {}
-}

j2k/tests/testData/ast/trait/extendsOneClassAndImplementsSeveralInterfaces.ide.kt

@@ -1,2 +1 @@
-trait A : I0, I1, I2 {
+trait A : I0, I1, I2 {}
-}

j2k/tests/testData/ast/trait/extendsOneClassAndImplementsSeveralInterfaces.kt

@@ -1,2 +1 @@
-trait A : I0, I1, I2 {
+trait A : I0, I1, I2 {}
-}

j2k/tests/testData/ast/trait/extendsOneInterface.ide.kt

@@ -1,2 +1 @@
-trait A : I {
+trait A : I {}
-}

j2k/tests/testData/ast/trait/extendsOneInterface.kt

@@ -1,2 +1 @@
-trait A : I {
+trait A : I {}
-}

j2k/tests/testData/ast/trait/internalInterface.ide.kt

@@ -1,2 +1 @@
-trait Test {
+trait Test {}
-}