functions/source/KeyGen/pycparser/ply/yacc.py [591:648]:
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                if errorcount == 0 or self.errorok:
                    errorcount = error_count
                    self.errorok = False
                    errtoken = lookahead
                    if errtoken.type == '$end':
                        errtoken = None               # End of file!
                    if self.errorfunc:
                        if errtoken and not hasattr(errtoken, 'lexer'):
                            errtoken.lexer = lexer
                        self.state = state
                        tok = call_errorfunc(self.errorfunc, errtoken, self)
                        if self.errorok:
                            # User must have done some kind of panic
                            # mode recovery on their own.  The
                            # returned token is the next lookahead
                            lookahead = tok
                            errtoken = None
                            continue
                    else:
                        if errtoken:
                            if hasattr(errtoken, 'lineno'):
                                lineno = lookahead.lineno
                            else:
                                lineno = 0
                            if lineno:
                                sys.stderr.write('yacc: Syntax error at line %d, token=%s\n' % (lineno, errtoken.type))
                            else:
                                sys.stderr.write('yacc: Syntax error, token=%s' % errtoken.type)
                        else:
                            sys.stderr.write('yacc: Parse error in input. EOF\n')
                            return

                else:
                    errorcount = error_count

                # case 1:  the statestack only has 1 entry on it.  If we're in this state, the
                # entire parse has been rolled back and we're completely hosed.   The token is
                # discarded and we just keep going.

                if len(statestack) <= 1 and lookahead.type != '$end':
                    lookahead = None
                    errtoken = None
                    state = 0
                    # Nuke the pushback stack
                    del lookaheadstack[:]
                    continue

                # case 2: the statestack has a couple of entries on it, but we're
                # at the end of the file. nuke the top entry and generate an error token

                # Start nuking entries on the stack
                if lookahead.type == '$end':
                    # Whoa. We're really hosed here. Bail out
                    return

                if lookahead.type != 'error':
                    sym = symstack[-1]
                    if sym.type == 'error':
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functions/source/KeyGen/pycparser/ply/yacc.py [1189:1246]:
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                if errorcount == 0 or self.errorok:
                    errorcount = error_count
                    self.errorok = False
                    errtoken = lookahead
                    if errtoken.type == '$end':
                        errtoken = None               # End of file!
                    if self.errorfunc:
                        if errtoken and not hasattr(errtoken, 'lexer'):
                            errtoken.lexer = lexer
                        self.state = state
                        tok = call_errorfunc(self.errorfunc, errtoken, self)
                        if self.errorok:
                            # User must have done some kind of panic
                            # mode recovery on their own.  The
                            # returned token is the next lookahead
                            lookahead = tok
                            errtoken = None
                            continue
                    else:
                        if errtoken:
                            if hasattr(errtoken, 'lineno'):
                                lineno = lookahead.lineno
                            else:
                                lineno = 0
                            if lineno:
                                sys.stderr.write('yacc: Syntax error at line %d, token=%s\n' % (lineno, errtoken.type))
                            else:
                                sys.stderr.write('yacc: Syntax error, token=%s' % errtoken.type)
                        else:
                            sys.stderr.write('yacc: Parse error in input. EOF\n')
                            return

                else:
                    errorcount = error_count

                # case 1:  the statestack only has 1 entry on it.  If we're in this state, the
                # entire parse has been rolled back and we're completely hosed.   The token is
                # discarded and we just keep going.

                if len(statestack) <= 1 and lookahead.type != '$end':
                    lookahead = None
                    errtoken = None
                    state = 0
                    # Nuke the pushback stack
                    del lookaheadstack[:]
                    continue

                # case 2: the statestack has a couple of entries on it, but we're
                # at the end of the file. nuke the top entry and generate an error token

                # Start nuking entries on the stack
                if lookahead.type == '$end':
                    # Whoa. We're really hosed here. Bail out
                    return

                if lookahead.type != 'error':
                    sym = symstack[-1]
                    if sym.type == 'error':
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