From 864b031211322dc276b220ec0a6e11483503a0e9 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Wed, 28 Oct 2020 17:44:06 +0800
Subject: ...

---
 include/cru/common/StringUtil.hpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'include/cru/common')

diff --git a/include/cru/common/StringUtil.hpp b/include/cru/common/StringUtil.hpp
index 5dacfa12..276048f5 100644
--- a/include/cru/common/StringUtil.hpp
+++ b/include/cru/common/StringUtil.hpp
@@ -1,4 +1,5 @@
 #pragma once
+#include <string>
 #include "Base.hpp"
 
 namespace cru {
@@ -124,4 +125,7 @@ void Utf16EncodeCodePointAppend(CodePoint code_point, std::u16string& str);
 
 std::string ToUtf8(std::u16string_view s);
 std::u16string ToUtf16(std::string_view s);
+
+// If given s is not a valid utf16 string, return value is UD.
+bool Utf16IsValidInsertPosition(std::u16string_view s, gsl::index position);
 }  // namespace cru
-- 
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