+# definition for a GUID. used to create regular expressions below.\r
+_HexChar = r"[0-9a-fA-F]"\r
+_GuidPattern = r"{Hex}{{8}}-{Hex}{{4}}-{Hex}{{4}}-{Hex}{{4}}-{Hex}{{12}}".format(Hex=_HexChar)\r
+\r
+## Regular expressions for GUID matching\r
+gGuidPattern = re.compile(r'{}'.format(_GuidPattern))\r
+gGuidPatternEnd = re.compile(r'{}$'.format(_GuidPattern))\r
+\r
+## Regular expressions for HEX matching\r
+g4HexChar = re.compile(r'{}{{4}}'.format(_HexChar))\r
+gHexPattern = re.compile(r'0[xX]{}+'.format(_HexChar))\r
+gHexPatternAll = re.compile(r'0[xX]{}+$'.format(_HexChar))\r
+\r
+## Regular expressions for string identifier checking\r
+gIdentifierPattern = re.compile('^[a-zA-Z][a-zA-Z0-9_]*$', re.UNICODE)\r
+\r