1 files changed, 48 insertions, 0 deletions
diff --git a/source/core/slang-char-util.cpp b/source/core/slang-char-util.cpp
new file mode 100644
index 000000000..53dd98541
--- /dev/null
+++ b/source/core/slang-char-util.cpp
@@ -0,0 +1,48 @@
+#include "slang-char-util.h"
+
+namespace Slang {
+
+static const CharUtil::CharFlagMap _calcCharFlagsMap()
+{
+    typedef CharUtil::Flag Flag;
+
+    CharUtil::CharFlagMap map;
+    memset(&map, 0, sizeof(map));
+
+    {
+        for (Index i = 'a'; i <= 'z'; ++i)
+        {
+            map.flags[i] |= Flag::Lower;
+        }
+    }
+    {
+        for (Index i = 'A'; i <= 'Z'; ++i)
+        {
+            map.flags[i] |= Flag::Upper;
+        }
+    }
+    {
+        for (Index i = '0'; i <= '9'; ++i)
+        {
+            map.flags[i] |= Flag::Digit | Flag::HexDigit;
+        }
+    }
+    {
+        for (Index i = 'a'; i <= 'f'; ++i)
+        {
+            map.flags[i] |= Flag::HexDigit;
+            map.flags[size_t(CharUtil::toUpper(char(i)))] |= Flag::HexDigit;
+        }
+    }
+
+    {
+        map.flags[size_t(' ')] |= Flag::HorizontalWhitespace;
+        map.flags[size_t('\t')] |= Flag::HorizontalWhitespace;
+    }
+
+    return map;
+}
+
+/* static */const CharUtil::CharFlagMap CharUtil::g_charFlagMap = _calcCharFlagsMap();
+
+} // namespace Slang