Add indent before accessor for extension property (KT-33131)

#KT-33131 Fixed

idea/formatter/src/org/jetbrains/kotlin/idea/formatter/KotlinCommonBlock.kt

@@ -328,10 +328,15 @@ abstract class KotlinCommonBlock(
         }
 
         if (newChildIndex > 0) {
-            val prevBlock = mySubBlocks?.get(newChildIndex - 1)
+            val prevNode = mySubBlocks?.get(newChildIndex - 1)?.node
-            if (prevBlock?.node?.elementType == MODIFIER_LIST) {
+            if (prevNode?.elementType == MODIFIER_LIST) {
                 return ChildAttributes(Indent.getNoneIndent(), null)
             }
+            val property = prevNode?.psi as? KtProperty
+            if (property?.receiverTypeReference != null && property.accessors.isNotEmpty()) {
+                val indent = if (type in CODE_BLOCKS) Indent.getContinuationIndent() else Indent.getNormalIndent()
+                return ChildAttributes(indent, null)
+            }
         }
 
         return when (type) {

idea/performanceTests/test/org/jetbrains/kotlin/idea/perf/PerformanceTypingIndentationTestGenerated.java

@@ -34,6 +34,16 @@ public class PerformanceTypingIndentationTestGenerated extends AbstractPerforman
         runTest("idea/testData/indentationOnNewline/AfterClassNameBeforeFun.kt");
     }
 
+    @TestMetadata("AfterExtensionPropertyGetter.kt")
+    public void testAfterExtensionPropertyGetter() throws Exception {
+        runTest("idea/testData/indentationOnNewline/AfterExtensionPropertyGetter.kt");
+    }
+
+    @TestMetadata("AfterExtensionPropertySetter.kt")
+    public void testAfterExtensionPropertySetter() throws Exception {
+        runTest("idea/testData/indentationOnNewline/AfterExtensionPropertySetter.kt");
+    }
+
     @TestMetadata("AfterFinally.kt")
     public void testAfterFinally() throws Exception {
         runTest("idea/testData/indentationOnNewline/AfterFinally.kt");

idea/testData/indentationOnNewline/AfterExtensionPropertyGetter.after.kt

@@ -0,0 +1,5 @@
+var String.foo: Int
+    get() = length
+    <caret>
+
+// WITHOUT_CUSTOM_LINE_INDENT_PROVIDER

idea/testData/indentationOnNewline/AfterExtensionPropertyGetter.kt

@@ -0,0 +1,4 @@
+var String.foo: Int
+    get() = length<caret>
+
+// WITHOUT_CUSTOM_LINE_INDENT_PROVIDER

idea/testData/indentationOnNewline/AfterExtensionPropertySetter.after.kt

@@ -0,0 +1,5 @@
+var String.foo: Int
+    set(value) {}
+    <caret>
+
+// WITHOUT_CUSTOM_LINE_INDENT_PROVIDER

idea/testData/indentationOnNewline/AfterExtensionPropertySetter.kt

@@ -0,0 +1,4 @@
+var String.foo: Int
+    set(value) {}<caret>
+
+// WITHOUT_CUSTOM_LINE_INDENT_PROVIDER

idea/tests/org/jetbrains/kotlin/formatter/TypingIndentationTestBaseGenerated.java

@@ -36,6 +36,16 @@ public class TypingIndentationTestBaseGenerated extends AbstractTypingIndentatio
             runTest("idea/testData/indentationOnNewline/AfterClassNameBeforeFun.after.kt");
         }
 
+        @TestMetadata("AfterExtensionPropertyGetter.after.kt")
+        public void testAfterExtensionPropertyGetter() throws Exception {
+            runTest("idea/testData/indentationOnNewline/AfterExtensionPropertyGetter.after.kt");
+        }
+
+        @TestMetadata("AfterExtensionPropertySetter.after.kt")
+        public void testAfterExtensionPropertySetter() throws Exception {
+            runTest("idea/testData/indentationOnNewline/AfterExtensionPropertySetter.after.kt");
+        }
+
         @TestMetadata("AfterFinally.after.kt")
         public void testAfterFinally() throws Exception {
             runTest("idea/testData/indentationOnNewline/AfterFinally.after.kt");