1 files changed, 4 insertions, 0 deletions
diff --git a/platform/core-impl/src/com/intellij/util/DocumentUtil.java b/platform/core-impl/src/com/intellij/util/DocumentUtil.java
index e2c78be69a3e..df9d26c6e690 100644
--- a/platform/core-impl/src/com/intellij/util/DocumentUtil.java
+++ b/platform/core-impl/src/com/intellij/util/DocumentUtil.java
@@ -82,4 +82,8 @@ public final class DocumentUtil {
     }
     return startOffset;
   }
+
+  public static boolean isValidOffset(int offset, @NotNull Document document) {
+    return offset >= 0 && offset <= document.getTextLength();
+  }
 }