[trivial] Added LineRange.toString() for debugging

Change-Id: I5d89f5dcdc6a6563d933d5918b760d4e9e27a092
Signed-off-by: Andrey Loskutov <loskutov@gmx.de>
diff --git a/org.eclipse.jface.text/src/org/eclipse/jface/text/source/LineRange.java b/org.eclipse.jface.text/src/org/eclipse/jface/text/source/LineRange.java
index 561a0f3..8d75792 100644
--- a/org.eclipse.jface.text/src/org/eclipse/jface/text/source/LineRange.java
+++ b/org.eclipse.jface.text/src/org/eclipse/jface/text/source/LineRange.java
@@ -43,4 +43,15 @@
 	public int getNumberOfLines() {
 		return fNumberOfLines;
 	}
+
+	@Override
+	public String toString() {
+		StringBuilder builder= new StringBuilder();
+		builder.append("LineRange [start line="); //$NON-NLS-1$
+		builder.append(fStartLine);
+		builder.append(", count="); //$NON-NLS-1$
+		builder.append(fNumberOfLines);
+		builder.append("]"); //$NON-NLS-1$
+		return builder.toString();
+	}
 }