2 files changed, 19 insertions, 0 deletions
diff --git a/source/core/slang-string.cpp b/source/core/slang-string.cpp
index 648249b2c..28acde6ac 100644
--- a/source/core/slang-string.cpp
+++ b/source/core/slang-string.cpp
@@ -45,6 +45,23 @@ namespace Slang
 
     // UnownedStringSlice
 
+    bool UnownedStringSlice::startsWith(UnownedStringSlice const& other) const
+    {
+        UInt thisSize = size();
+        UInt otherSize = other.size();
+
+        if (otherSize > thisSize)
+            return false;
+
+        return UnownedStringSlice(begin(), begin() + otherSize) == other;
+    }
+
+    bool UnownedStringSlice::startsWith(char const* str) const
+    {
+        return startsWith(UnownedTerminatedStringSlice(str));
+    }
+
+
     bool UnownedStringSlice::endsWith(UnownedStringSlice const& other) const
     {
         UInt thisSize = size();
diff --git a/source/core/slang-string.h b/source/core/slang-string.h
index 435e2b29b..5a20d8b75 100644
--- a/source/core/slang-string.h
+++ b/source/core/slang-string.h
@@ -133,6 +133,8 @@ namespace Slang
             return !(*this == other);
         }
 
+        bool startsWith(UnownedStringSlice const& other) const;
+        bool startsWith(char const* str) const;
 
         bool endsWith(UnownedStringSlice const& other) const;
         bool endsWith(char const* str) const;