1 files changed, 8 insertions, 0 deletions
diff --git a/src/common/String.cpp b/src/common/String.cpp
index 699d807f..ba31e6f6 100644
--- a/src/common/String.cpp
+++ b/src/common/String.cpp
@@ -1,4 +1,5 @@
 #include "cru/common/String.hpp"
+#include "cru/common/Exception.hpp"
 #include "cru/common/StringUtil.hpp"
 
 #include <gsl/gsl>
@@ -214,6 +215,13 @@ std::string String::ToUtf8() const {
   return cru::ToUtf8(std::u16string_view(data(), size()));
 }
 
+void String::AppendCodePoint(CodePoint code_point) {
+  if (!Utf16EncodeCodePointAppendWithFunc(
+          code_point, [this](char16_t c) { this->push_back(c); })) {
+    throw TextEncodeException(u"Code point out of range.");
+  }
+}
+
 Index String::IndexFromCodeUnitToCodePoint(Index code_unit_index) const {
   auto iter = CodePointIterator();
   Index result = 0;