# -*- coding: utf-8 -*-
from __future__ import division
from __future__ import print_function
from __future__ import absolute_import
from __future__ import unicode_literals
from copy import copy
from ..registry import check
from ..error import Error
# Module API
@check('missing-value')
def missing_value(cells):
"""
missing-value: A row has less columns than the header.
"""
errors = []
for cell in copy(cells):
# Skip if cell has value
# There is a difference between:
# - not having value at all - there is no `value` key
# - having a value which is falsy (None, False, '', etc)
# (so we don't use something like `if cell.get('value')`)
if 'value' in cell or cell.get('is-virtual'):
continue
# Add error
error = Error('missing-value', cell)
errors.append(error)
# Remove cell
cells.remove(cell)
return errors
