From 922d7f6c96f81a33538900f8a8992a5b6f640874 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Thu, 23 Apr 2020 02:00:05 +0800
Subject: ...

---
 include/cru/platform/graph_base.hpp | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'include/cru/platform')

diff --git a/include/cru/platform/graph_base.hpp b/include/cru/platform/graph_base.hpp
index 0b997770..c880c7a2 100644
--- a/include/cru/platform/graph_base.hpp
+++ b/include/cru/platform/graph_base.hpp
@@ -229,6 +229,15 @@ struct TextRange final {
 
   gsl::index GetEnd() const { return position + count; }
 
+  TextRange Normalize() const {
+    auto result = *this;
+    if (result.count < 0) {
+      result.position += result.count;
+      result.count = -result.count;
+    }
+    return result;
+  }
+
   gsl::index position = 0;
   gsl::index count = 0;
 };
-- 
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