added abstract getType method to Indent class

platform/lang-api/src/com/intellij/formatting/Indent.java

@@ -83,6 +83,8 @@ import org.jetbrains.annotations.NotNull;
 public abstract class Indent {
   private static IndentFactory myFactory;
 
+  public abstract Type getType();
+
   static void setFactory(IndentFactory factory) {
     myFactory = factory;
   }

platform/lang-impl/src/com/intellij/formatting/IndentImpl.java

@@ -18,7 +18,7 @@ package com.intellij.formatting;
 
 import org.jetbrains.annotations.NonNls;
 
-public class IndentImpl extends Indent {
+class IndentImpl extends Indent {
   private final boolean myIsAbsolute;
   private final boolean myRelativeToDirectParent;
 
@@ -38,6 +38,7 @@ public class IndentImpl extends Indent {
     myEnforceIndentToChildren = enforceIndentToChildren;
   }
 
+  @Override
   public Type getType() {
     return myType;
   }

platform/lang-impl/src/com/intellij/psi/codeStyle/autodetect/FormatterBasedLineIndentInfoBuilder.java

@@ -59,7 +59,8 @@ public class FormatterBasedLineIndentInfoBuilder {
     List<Block> normallyIndentedBlocks = ContainerUtil.filter(getBlocksStartingNewLine(), new Condition<Block>() {
       @Override
       public boolean value(Block block) {
-        Indent.Type type = block.getIndent() instanceof IndentImpl ? ((IndentImpl)block.getIndent()).getType() : null;
+        Indent indent = block.getIndent();
+        Indent.Type type = indent != null ? indent.getType() : null;
         return type == Indent.Type.NONE || type == Indent.Type.NORMAL;
       }
     });