IDEA-43962 Indentation error on deep nesting levels

Provided bridging facilities between new and old wrap types api

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

@@ -15,6 +15,11 @@
  */
 package com.intellij.formatting;
 
+import com.intellij.psi.codeStyle.CodeStyleSettings;
+
+import java.util.HashMap;
+import java.util.Map;
+
 /**
  * Defines possible types of a wrap.
  *
@@ -23,29 +28,69 @@ package com.intellij.formatting;
  */
 
 public enum WrapType {
+
   /**
    * A line break is always inserted before the start of the element.
    * This corresponds to the "Wrap always" setting in Global Code Style | Wrapping.
    */
-  ALWAYS,
+  ALWAYS(CodeStyleSettings.WRAP_ALWAYS),
 
   /**
    * A line break is inserted before the start of the element if the right edge
    * of the element goes beyond the specified wrap margin.
    * This corresponds to the "Wrap if long" setting in Global Code Style | Wrapping.
    */
-  NORMAL,
+  NORMAL(CodeStyleSettings.WRAP_AS_NEEDED),
 
   /**
    * A line break is never inserted before the start of the element.
    * This corresponds to the "Do not wrap" setting in Global Code Style | Wrapping.
    */
-  NONE,
+  NONE(CodeStyleSettings.DO_NOT_WRAP),
 
   /**
    * A line break is inserted before the start of the element if it is a part
    * of list of elements of the same type and at least one of the elements was wrapped.
    * This corresponds to the "Chop down if long" setting in Global Code Style | Wrapping.
    */
-  CHOP_DOWN_IF_LONG
+  CHOP_DOWN_IF_LONG(CodeStyleSettings.WRAP_ON_EVERY_ITEM);
+
+  private static final Map<Integer, WrapType> LEGACY_MAPPINGS = new HashMap<Integer, WrapType>();
+
+  static {
+    for (WrapType wrapType : values()) {
+      LEGACY_MAPPINGS.put(wrapType.getLegacyRepresentation(), wrapType);
+    }
+  }
+
+  private final int myLegacyRepresentation;
+
+  WrapType(int legacyRepresentation) {
+    myLegacyRepresentation = legacyRepresentation;
+  }
+
+  /**
+   * Allows to retrieve wrap type by it's legacy non-type-safe representation (see {@link #getLegacyRepresentation()}).
+   *
+   * @param value   legacy representation of the target wrap type
+   * @return        wrap type which {@link #getLegacyRepresentation() legacyRepresentation} is equal to the given value if any;
+   *                {@link #CHOP_DOWN_IF_LONG} otherwise
+   */
+  public static WrapType byLegacyRepresentation(int value) {
+    WrapType result = LEGACY_MAPPINGS.get(value);
+    return result == null ? CHOP_DOWN_IF_LONG : result;
+  }
+
+  /**
+   * Wrapping types were used as a primitive constants during this enum introduction (e.g. {@link CodeStyleSettings#DO_NOT_WRAP} etc).
+   * <p/>
+   * It's possible to map that legacy representation to the object-level enum member via {@link #byLegacyRepresentation(int)}.
+   * <p/>
+   * Current getter exposes legacy value associated with the current object-level wrap type representation.
+   *
+   * @return      legacy representation of the current wrap type
+   */
+  public int getLegacyRepresentation() {
+    return myLegacyRepresentation;
+  }
 }