def parseImpl( self, instring, loc, doActions=True ):
        if self.re:
            result = self.re.match(instring,loc)
            if not result:
                raise ParseException(instring, loc, self.errmsg, self)

            loc = result.end()
            return loc, result.group()

        if not(instring[ loc ] in self.initChars):
            raise ParseException(instring, loc, self.errmsg, self)

        start = loc
        loc += 1
        instrlen = len(instring)
        bodychars = self.bodyChars
        maxloc = start + self.maxLen
        maxloc = min( maxloc, instrlen )
        while loc < maxloc and instring[loc] in bodychars:
            loc += 1

        throwException = False
        if loc - start < self.minLen:
            throwException = True
        if self.maxSpecified and loc < instrlen and instring[loc] in bodychars:
            throwException = True
        if self.asKeyword:
            if (start>0 and instring[start-1] in bodychars) or (loc<instrlen and instring[loc] in bodychars):
                throwException = True

        if throwException:
            raise ParseException(instring, loc, self.errmsg, self)

        return loc, instring[start:loc]
dataset/ETHPy150Open Exa-Networks/exabgp/lib/exabgp/dep/pyparsing.py/Word.parseImpl/original