More correct completion of overrides in constructor parameters - '$' character confuses parser

idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/OverridesCompletion.kt

@@ -30,7 +30,7 @@ import org.jetbrains.kotlin.descriptors.Modality
 import org.jetbrains.kotlin.descriptors.PropertyDescriptor
 import org.jetbrains.kotlin.idea.JetDescriptorIconProvider
 import org.jetbrains.kotlin.idea.codeInsight.DescriptorToSourceUtilsIde
-import org.jetbrains.kotlin.idea.completion.handlers.skipSpaces
+import org.jetbrains.kotlin.idea.completion.handlers.indexOfSkippingSpace
 import org.jetbrains.kotlin.idea.core.completion.DeclarationLookupObject
 import org.jetbrains.kotlin.idea.core.overrideImplement.OverrideMembersHandler
 import org.jetbrains.kotlin.idea.core.overrideImplement.generateMember
@@ -102,7 +102,8 @@ class OverridesCompletion(
                 }
 
                 override fun handleInsert(context: InsertionContext) {
-                    val dummyMemberText = if (isConstructorParameter) "override val dummy: Dummy $" else "override fun dummy() {}"
+                    val chars = context.document.charsSequence
+                    val dummyMemberText = if (isConstructorParameter) "override val dummy: Dummy ,@" else "override fun dummy() {}"
                     context.document.replaceString(context.startOffset, context.tailOffset, dummyMemberText)
 
                     val psiDocumentManager = PsiDocumentManager.getInstance(context.project)
@@ -123,10 +124,9 @@ class OverridesCompletion(
                         psiDocumentManager.doPostponedOperationsAndUnblockDocument(context.document)
 
                         val offset = insertedMember.endOffset
-                        val chars = context.document.charsSequence
-                        val commaOffset = chars.skipSpaces(offset)
-                        assert(chars[commaOffset] == '$') { "Incorrect char at index: '${chars[commaOffset]}', '$' expected" }
-                        context.document.deleteString(offset, commaOffset + 1)
+                        val commaOffset = chars.indexOfSkippingSpace(',', offset)!!
+                        val atCharOffset = chars.indexOfSkippingSpace('@', commaOffset + 1)!!
+                        context.document.deleteString(offset, atCharOffset + 1)
 
                         context.editor.moveCaret(offset)
                     }

idea/idea-completion/testData/handlers/basic/override/ValInConstructorParameter4.kt

@@ -1,12 +1,11 @@
 package ppp
 
 interface I {
-    val p: Nested
-
-    interface Nested
+    val p: CCCC.Nested
 }
 
 class CCCC(over<caret>val x: Int) : I {
+    interface Nested
 }
 
-// ELEMENT_TEXT: "override val p: I.Nested"
+// ELEMENT_TEXT: "override val p: CCCC.Nested"

idea/idea-completion/testData/handlers/basic/override/ValInConstructorParameter4.kt.after

@@ -1,12 +1,11 @@
 package ppp
 
 interface I {
-    val p: Nested
+    val p: CCCC.Nested
+}
 
+class CCCC(override val p: CCCC.Nested<caret>val x: Int) : I {
     interface Nested
 }
 
-class CCCC(override val p: I.Nested<caret>val x: Int) : I {
-}
-
-// ELEMENT_TEXT: "override val p: I.Nested"
+// ELEMENT_TEXT: "override val p: CCCC.Nested"