def algnexpr_spans_do_not_overlap(item, refattr):
itemref = item.attributes.get(refattr)
reftier = get_referred_tier(item, refattr)
if not itemref or not reftier:
return
spans_by_id = defaultdict(Counter)
for span in spans(itemref):
if span in alignment_expression_delimiters:
continue # schema validator should catch bad algnexprs like '+w3'
if isinstance(span, str):
tgt_item = reftier.get(span)
if tgt_item is None:
continue # this should be caught by algnexpr_ids_in_referred_tier
val = tgt_item.value()
if val is None:
continue # does this need to be handled?
item_len = len(tgt_item.value())
spans_by_id[span].update(range(0, item_len))
else:
item_id, start, end = span
spans_by_id[item_id].update(range(start, end))
error_spans = [
item_id for item_id, count in spans_by_id.items()
if any(count[c] > 1 for c in count)
]
if error_spans:
return (
'Alignment expression spans {{modal}} NOT overlap. Spans '
'for the following <item> elements overlap: {}'
.format(', '.join(error_spans))
)
def algnexpr_spans_in_aligned_item(item, refattr):
itemref = item.attributes.get(refattr)
reftier = get_referred_tier(item, refattr)
if not itemref or not reftier:
return
error_spans = []
for span in spans(itemref):
if span in alignment_expression_delimiters:
continue # schema validator should catch bad algnexprs like '+w3'
sel_delim, item_id, _range = selection_re.match(span).groups()
if _range:
_, start, end = span_re.match(_range).groups()
start = int(start)
end = int(end)
else:
continue
tgt_item = reftier.get(item_id)
if tgt_item is None:
continue # this should be caught by algnexpr_ids_in_referred_tier
item_len = len(tgt_item.value())
if start > item_len or end > item_len:
error_spans.append(span)
if error_spans:
return (
'Alignment expressions {{modal}} select spans within '
'the aligned <item> elements. The following spans are not '
'valid: {}'.format(', '.join(error_spans))
)
def test_spans(self):
assert ref.spans('') == []
assert ref.spans('a1') == ['a1']
assert ref.spans('a1[3:5]') == ['a1[3:5]']
assert ref.spans('a1[3:5+6:7]') == ['a1[3:5]', '+', 'a1[6:7]']
assert ref.spans('a1[3:5+6:7]', keep_delimiters=False) == ['a1[3:5]', 'a1[6:7]']
assert ref.spans('a1[3:5+6:7]+a2[1:4]') == ['a1[3:5]', '+', 'a1[6:7]', '+', 'a2[1:4]']
assert ref.spans('a1 a2 a3') == ['a1', ' ', 'a2', ' ', 'a3']
def test_spans(self):
self.assertEqual(ref.spans(''), [])
self.assertEqual(ref.spans('a1'),
['a1'])
self.assertEqual(ref.spans('a1[3:5]'),
['a1[3:5]'])
self.assertEqual(ref.spans('a1[3:5+6:7]'),
['a1[3:5]', '+', 'a1[6:7]'])
self.assertEqual(ref.spans('a1[3:5+6:7]', keep_delimiters=False),
['a1[3:5]', 'a1[6:7]'])
self.assertEqual(ref.spans('a1[3:5+6:7]+a2[1:4]'),
['a1[3:5]', '+', 'a1[6:7]', '+', 'a2[1:4]'])
self.assertEqual(ref.spans('a1 a2 a3'),
['a1', ' ', 'a2', ' ', 'a3']
)