From 19f629068668fd734118fb901a14a7524bc7eda6 Mon Sep 17 00:00:00 2001
From: Alexander Podkhalyuzin <Alexander.Podkhalyuzin@jetbrains.com>
Date: Mon, 25 Mar 2019 14:21:13 +0300
Subject: [PATCH] Fixed selection in case of empty class body

#KT-30597 Fixed
---
 .../editor/wordSelection/KotlinClassMemberSelectioner.kt     | 5 ++++-
 idea/testData/wordSelection/Class/0.kt                       | 3 +++
 idea/testData/wordSelection/Class/1.kt                       | 3 +++
 idea/testData/wordSelection/Class/2.kt                       | 3 +++
 idea/tests/org/jetbrains/kotlin/idea/WordSelectionTest.java  | 4 ++++
 5 files changed, 17 insertions(+), 1 deletion(-)
 create mode 100644 idea/testData/wordSelection/Class/0.kt
 create mode 100644 idea/testData/wordSelection/Class/1.kt
 create mode 100644 idea/testData/wordSelection/Class/2.kt

diff --git a/idea/src/org/jetbrains/kotlin/idea/editor/wordSelection/KotlinClassMemberSelectioner.kt b/idea/src/org/jetbrains/kotlin/idea/editor/wordSelection/KotlinClassMemberSelectioner.kt
index 32feac4b452..7c00edde4cf 100644
--- a/idea/src/org/jetbrains/kotlin/idea/editor/wordSelection/KotlinClassMemberSelectioner.kt
+++ b/idea/src/org/jetbrains/kotlin/idea/editor/wordSelection/KotlinClassMemberSelectioner.kt
@@ -24,7 +24,10 @@ class KotlinClassMemberSelectioner : ExtendWordSelectionHandlerBase() {
         val lastChild = parent.lastChild ?: return null
         val startElement = firstChild.getNextSiblingIgnoringWhitespace() ?: firstChild
         val endElement = lastChild.getPrevSiblingIgnoringWhitespace() ?: lastChild
-        val textRange = TextRange(startElement.textRange.startOffset, endElement.textRange.endOffset)
+        val startOffset = startElement.textRange.startOffset
+        val endOffset = endElement.textRange.endOffset
+        if (startOffset >= endOffset) return null
+        val textRange = TextRange(startOffset, endOffset)
         return expandToWholeLinesWithBlanks(editorText, textRange)
     }
 }
\ No newline at end of file
diff --git a/idea/testData/wordSelection/Class/0.kt b/idea/testData/wordSelection/Class/0.kt
new file mode 100644
index 00000000000..50b547b5120
--- /dev/null
+++ b/idea/testData/wordSelection/Class/0.kt
@@ -0,0 +1,3 @@
+class SimpleClass {
+    <caret>
+}
\ No newline at end of file
diff --git a/idea/testData/wordSelection/Class/1.kt b/idea/testData/wordSelection/Class/1.kt
new file mode 100644
index 00000000000..137138ff46b
--- /dev/null
+++ b/idea/testData/wordSelection/Class/1.kt
@@ -0,0 +1,3 @@
+class SimpleClass <selection>{
+    <caret>
+}</selection>
\ No newline at end of file
diff --git a/idea/testData/wordSelection/Class/2.kt b/idea/testData/wordSelection/Class/2.kt
new file mode 100644
index 00000000000..a0e07bf6186
--- /dev/null
+++ b/idea/testData/wordSelection/Class/2.kt
@@ -0,0 +1,3 @@
+<selection>class SimpleClass {
+    <caret>
+}</selection>
\ No newline at end of file
diff --git a/idea/tests/org/jetbrains/kotlin/idea/WordSelectionTest.java b/idea/tests/org/jetbrains/kotlin/idea/WordSelectionTest.java
index 7f31fdaffa5..99139690080 100644
--- a/idea/tests/org/jetbrains/kotlin/idea/WordSelectionTest.java
+++ b/idea/tests/org/jetbrains/kotlin/idea/WordSelectionTest.java
@@ -112,6 +112,10 @@ public class WordSelectionTest extends KotlinLightCodeInsightFixtureTestCase {
         doTest();
     }
 
+    public void testClass() {
+        doTest();
+    }
+
     public void testDeclarationWithComment1() { doTest(); }
     public void testDeclarationWithComment2() { doTest(); }
     public void testDeclarationWithComment3() { doTest(); }