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checker_parser.py
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Mon, Oct 14, 14:54

checker_parser.py
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# -*- coding: utf-8 -*-
##
## This file is part of Invenio.
## Copyright (C) 2013 CERN.
##
## Invenio is free software; you can redistribute it and/or
## modify it under the terms of the GNU General Public License as
## published by the Free Software Foundation; either version 2 of the
## License, or (at your option) any later version.
##
## Invenio is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Invenio; if not, write to the Free Software Foundation, Inc.,
## 60 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
from pyparsing import Optional, Suppress, OneOrMore, indentedBlock, nestedExpr,\
originalTextFor
from invenio.modules.jsonalchemy.parser import BaseExtensionParser, \
function_call
class CheckerParser(BaseExtensionParser):
"""
"""
@classmethod
def parse_element(cls, indent_stack):
master_format = (Suppress("@master_format") + \
originalTextFor(nestedExpr("(", ")")))\
.setResultsName("master_format")\
.setParseAction(lambda toks: toks[0])
checker_body = indentedBlock((Optional (master_format) + \
function_call.setResultsName('func')), indent_stack)
return (Suppress('checker:') + OneOrMore(checker_body))\
.setResultsName('checker')\
.setParseAction(lambda toks: toks[0])
@classmethod
def create_element(cls, rule, override, extend, namespace):
return None
CheckerParser.__name__ = 'checker'
parser = CheckerParser

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