Formatter: left brace formatting for "when" expression and "when" entries

idea/testData/formatter/WhenEntryExpr.after.kt

@@ -24,44 +24,36 @@ fun some(x: Any) {
         }
     }
     when (x) {
-        is Int ->
-        {
+        is Int -> {
             0
         }
-        3 ->
-        {
+        3 -> {
             2
         }
-        in 0..3 ->
-        {
+        in 0..3 -> {
             2
         }
-        else ->
-        {
+        else -> {
             1
         }
     }
     when (x) {
         is
         Int
-        ->
-        {
+        -> {
             0
         }
         3
-        ->
-        {
+        -> {
             2
         }
         in
         0..3
-        ->
-        {
+        -> {
             2
         }
         else
-        ->
-        {
+        -> {
             1
         }
     }

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

@@ -0,0 +1,39 @@
+fun f() {
+    when(c) {
+        a -> {
+        }
+        b -> j
+        else -> {
+        }
+    }
+
+    when(c) {
+        a -> {
+        }
+        b -> j
+        else -> {
+        }
+    }
+
+    when(c) {
+        a -> {
+        }
+        b -> j
+        else -> {
+        }
+    }
+
+    when(c) //eol comment
+    {
+        a -> //eol comment
+        {
+        }
+        b -> j
+        else -> //eol comment
+        {
+        }
+    }
+}
+
+
+// SET_TRUE: LBRACE_ON_NEXT_LINE

idea/testData/formatter/WhenLineBreak.after.kt

@@ -0,0 +1,49 @@
+fun f()
+{
+    when(c)
+    {
+        a ->
+        {
+        }
+        b -> j
+        else ->
+        {
+        }
+    }
+
+    when(c)
+    {
+        a ->
+        {
+        }
+        b -> j
+        else ->
+        {
+        }
+    }
+
+    when(c)
+    {
+        a ->
+        {
+        }
+        b -> j
+        else ->
+        {
+        }
+    }
+
+    when(c) //eol comment
+    {
+        a -> //eol comment
+        {
+        }
+        b -> j
+        else -> //eol comment
+        {
+        }
+    }
+}
+
+
+// SET_TRUE: LBRACE_ON_NEXT_LINE

idea/testData/formatter/WhenLineBreak.kt

@@ -0,0 +1,49 @@
+fun f()
+{
+    when(c) {
+        a -> {
+        }
+        b -> j
+        else -> {
+        }
+    }
+
+    when(c)
+    {
+        a ->
+        {
+        }
+        b -> j
+        else ->
+        {
+        }
+    }
+
+    when(c)
+
+    {
+        a ->
+
+        {
+        }
+        b -> j
+        else ->
+
+        {
+        }
+    }
+
+    when(c) //eol comment
+    {
+        a -> //eol comment
+        {
+        }
+        b -> j
+        else -> //eol comment
+        {
+        }
+    }
+}
+
+
+// SET_TRUE: LBRACE_ON_NEXT_LINE

idea/testData/formatter/WhenLinesBeforeLbrace.after.kt

@@ -1,6 +1,5 @@
 fun f(x: Any): Int {
-    return when (x)
-    {
+    return when (x) {
         is Int -> 1
         else -> 0
     }