Fix Android resource reference folding

Properly fold qualified expressions and handle nested references

 #KT-18429 Fixed

idea/testData/android/folding/R.java

@@ -30,5 +30,7 @@ public final class R {
         public static final int mydimen1=0x7f07005b;
         public static final int mydimen2=0x7f07005c;
         public static final int mydimen3=0x7f07005d;
+        public static final int dimenRef=0x7f07005e;
+        public static final int dimenAndroidRef=0x7f07005f;
     }
 }

idea/testData/android/folding/dimensions.kt

@@ -15,5 +15,10 @@ class MyActivity : Activity() <fold text='{...}' expand='true'>{
         val strings = intArrayOf(<fold text='"1111"' expand='false'>R.string.string1</fold>, <fold text='"2222"' expand='false'>R.string.string2</fold>, <fold text='"3333"' expand='false'>R.string.string3</fold>)
         val dimensions = intArrayOf(<fold text='1dip' expand='false'>R.dimen.mydimen1</fold>, <fold text='2dip' expand='false'>R.dimen.mydimen2</fold>)
         val maxButtons = <fold text='max_action_buttons: 2' expand='false'>resources.getInteger(R.integer.max_action_buttons)</fold>
+        val dimensionWithReference = <fold text='1dip' expand='false'>resources.getDimension(R.dimen.dimenRef)</fold>
+        val dimensionWithAndroidReference = <fold text='@android:dimen/app_icon_size' expand='false'>resources.getDimension(R.dimen.dimenAndroidRef)</fold>
+        with(resources) <fold text='{...}' expand='true'>{
+            val dimension = <fold text='56dip' expand='false'>resources.getDimension(R.dimen.action_bar_default_height)</fold>.toInt()
+        }</fold>
     }</fold>
 }</fold>

idea/testData/android/folding/plurals.kt

@@ -4,6 +4,6 @@ import android.content.Context
 
 fun Context.testPlurals(quantity: Int) <fold text='{...}' expand='true'>{
     val plural1 = <fold text='"Reference One"' expand='false'>resources.getQuantityString(R.plurals.first, quantity)</fold>
-    val plural2 = <fold text='Quantity One' expand='false'>this.getResources().getQuantityString(R.plurals.second, quantity)</fold>
+    val plural2 = <fold text='"Quantity One"' expand='false'>this.getResources().getQuantityString(R.plurals.second, quantity)</fold>
 }</fold>
 

idea/testData/android/folding/values.xml

@@ -36,4 +36,6 @@
     <dimen name="mydimen3">3dip</dimen>
     <dimen name="mydimen1">1dip</dimen>
     <dimen name="mydimen2">2dip</dimen>
+    <dimen name="dimenRef">@dimen/mydimen1</dimen>
+    <dimen name="dimenAndroidRef">@android:dimen/app_icon_size</dimen>
 </resources>