Page MenuHomec4science
Files F69726760

parse_first_parser.py
No OneTemporary
Actions

File Metadata

Created
Wed, Jul 3, 04:53

parse_first_parser.py
View Options

# -*- coding: utf-8 -*-
#
# This file is part of Invenio.
# Copyright (C) 2014 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.,
# 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
from pyparsing import Keyword, Literal, delimitedList, quotedString, \
removeQuotes
from invenio.modules.jsonalchemy.parser import \
DecoratorBeforeEvalBaseExtensionParser
class ParseFirstParser(DecoratorBeforeEvalBaseExtensionParser):
"""
Handle the ``@parse_first`` decorator.
.. code-block:: ini
author_aggregation:
derived:
@parse_first('creators', 'contributors')
self.get_list('creators') + self.get_list(contributors)
"""
__parsername__ = 'parse_first'
@classmethod
def parse_element(cls, indent_stack):
return (Keyword("@parse_first").suppress() +
Literal('(').suppress() +
delimitedList(quotedString.setParseAction(removeQuotes)) +
Literal(')').suppress()
).setResultsName("parse_first")
@classmethod
def create_element(cls, rule, field_def, content, namespace):
return content.asList()
@classmethod
def evaluate(cls, reader, args):
"""Try to parse ``args`` first and return always ``True``."""
map(reader._unpack_rule, args)
return True
parser = ParseFirstParser

Event Timeline

c4science · Help