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def shaper_inputs(self):
return self.input
def __find_masked_ix(buf, ix):
# This probably could be done better...
for i in range(len(buf.items)):
if buf.mask[i] == ix:
return i
return -1
def _do_apply(self, buf, ix, namedclasses={}):
from fontFeatures import RoutineReference
# Save buffer mask
flags = buf.flags
markFilteringSet = buf.markFilteringSet
markAttachmentSet = buf.markAttachmentSet
if ix + len(self.lookups) - 1 > len(buf.mask):
return
old_unmasked_indexes = [buf.mask[ix + i] for i in range(len(self.lookups))]
for i, lookups in enumerate(self.lookups):
if not lookups:
continue
for routine in lookups:
assert isinstance(routine, RoutineReference)
routine = routine.routine
# Adjust mask and recompute index?
unmasked_ix = old_unmasked_indexes[i]
for rule in routine.rules:
buf.set_mask(
rule.flags, routine.markFilteringSet, routine.markAttachmentSet
)
newix = __find_masked_ix(buf, unmasked_ix)
if rule.would_apply_at_position(
buf, newix, namedclasses
) and rule._do_apply(buf, newix):
break
buf.set_mask(flags, markFilteringSet, markAttachmentSet)
return len(self.input) - 1
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