2 files changed, 19 insertions, 0 deletions
diff --git a/source/core/slang-string.cpp b/source/core/slang-string.cpp
index 4b1ec4c84..a7374d8ba 100644
--- a/source/core/slang-string.cpp
+++ b/source/core/slang-string.cpp
@@ -362,6 +362,18 @@ namespace Slang
         }
     }
 
+    void String::appendRepeatedChar(char chr, Index count)
+    {
+        SLANG_ASSERT(count >= 0);
+        if (count > 0)
+        { 
+            char* chars = prepareForAppend(count);
+            // Set all space to repeated chr. 
+            ::memset(chars, chr, sizeof(char) * count);
+            appendInPlace(chars, count);
+        }
+    }
+
     void String::appendChar(char c)
     {
         const auto oldLength = getLength();
diff --git a/source/core/slang-string.h b/source/core/slang-string.h
index e57718d40..3fb184ac7 100644
--- a/source/core/slang-string.h
+++ b/source/core/slang-string.h
@@ -100,6 +100,10 @@ namespace Slang
         {
             return slice.m_begin >= m_begin && slice.m_end <= m_end; 
         }
+        bool isMemoryContained(const char* pos) const
+        {
+            return pos >= m_begin && pos <= m_end;
+        }
 
         Index getLength() const
         {
@@ -439,6 +443,9 @@ namespace Slang
             /// Append a character (to remove ambiguity with other integral types)
         void appendChar(char chr);
 
+            /// Append the specified char count times
+        void appendRepeatedChar(char chr, Index count);
+
         String(const char* str)
         {
             append(str);