2 files changed, 11 insertions, 0 deletions
diff --git a/native/jni/src/utils/char_utils.cpp b/native/jni/src/utils/char_utils.cpp
index 0e7039610..d41fc8924 100644
--- a/native/jni/src/utils/char_utils.cpp
+++ b/native/jni/src/utils/char_utils.cpp
@@ -1273,4 +1273,6 @@ static int compare_pair_capital(const void *a, const void *b) {
     /* U+04F0 */ 0x0423, 0x0443, 0x0423, 0x0443, 0x0427, 0x0447, 0x04F6, 0x04F7,
     /* U+04F8 */ 0x042B, 0x044B, 0x04FA, 0x04FB, 0x04FC, 0x04FD, 0x04FE, 0x04FF,
 };
+
+/* static */ const std::vector<int> CharUtils::EMPTY_STRING(1 /* size */, '\0' /* value */);
 } // namespace latinime
diff --git a/native/jni/src/utils/char_utils.h b/native/jni/src/utils/char_utils.h
index 41663c81a..98b8966df 100644
--- a/native/jni/src/utils/char_utils.h
+++ b/native/jni/src/utils/char_utils.h
@@ -18,6 +18,7 @@
 #define LATINIME_CHAR_UTILS_H
 
 #include <cctype>
+#include <vector>
 
 #include "defines.h"
 
@@ -85,7 +86,15 @@ class CharUtils {
         return spaceCount;
     }
 
+    static AK_FORCE_INLINE std::vector<int> convertShortArrayToIntVector(
+            const unsigned short *const source, const int length) {
+        std::vector<int> destination;
+        destination.insert(destination.end(), source, source + length);
+        return destination; // Copies the vector
+    }
+
     static unsigned short latin_tolower(const unsigned short c);
+    static const std::vector<int> EMPTY_STRING;
 
  private:
     DISALLOW_IMPLICIT_CONSTRUCTORS(CharUtils);