g4HexChar = re.compile(r'{}{{4}}'.format(_HexChar))\r
gHexPattern = 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
#\r
# A global variable for whether current build in AutoGen phase or not.\r
#\r