def parse_subtable_(self):
assert self.is_cur_keyword_("subtable")
location = self.cur_token_location_
self.expect_symbol_(";")
return ast.SubtableStatement(location)
def _lookupDefinition(self, lookup):
mark_attachement = None
mark_filtering = None
flags = 0
if lookup.direction == "RTL":
flags |= 1
if not lookup.process_base:
flags |= 2
# FIXME: Does VOLT support this?
# if not lookup.process_ligatures:
# flags |= 4
if not lookup.process_marks:
flags |= 8
elif isinstance(lookup.process_marks, str):
mark_attachement = self._groupName(lookup.process_marks)
elif lookup.mark_glyph_set is not None:
mark_filtering = self._groupName(lookup.mark_glyph_set)
lookupflags = None
if flags or mark_attachement is not None or mark_filtering is not None:
lookupflags = ast.LookupFlagStatement(flags, mark_attachement,
mark_filtering)
if "\\" in lookup.name:
# Merge sub lookups as subtables (lookups named “base\sub”),
# makeotf/feaLib will issue a warning and ignore the subtable
# statement if it is not a pairpos lookup, though.
name = lookup.name.split("\\")[0]
if name.lower() not in self._lookups:
fealookup = ast.LookupBlock(self._lookupName(name))
if lookupflags is not None:
fealookup.statements.append(lookupflags)
fealookup.statements.append(ast.Comment("# " + lookup.name))
else:
fealookup = self._lookups[name.lower()]
fealookup.statements.append(ast.SubtableStatement())
fealookup.statements.append(ast.Comment("# " + lookup.name))
self._lookups[name.lower()] = fealookup
else:
fealookup = ast.LookupBlock(self._lookupName(lookup.name))
if lookupflags is not None:
fealookup.statements.append(lookupflags)
self._lookups[lookup.name.lower()] = fealookup
if lookup.comments is not None:
fealookup.statements.append(ast.Comment("# " + lookup.comments))
contexts = []
if lookup.context:
for context in lookup.context:
prefix = self._context(context.left)
suffix = self._context(context.right)
ignore = context.ex_or_in == "EXCEPT_CONTEXT"
contexts.append([prefix, suffix, ignore, False])
# It seems that VOLT will create contextual substitution using
# only the input if there is no other contexts in this lookup.
if ignore and len(lookup.context) == 1:
contexts.append([[], [], False, True])
else:
contexts.append([[], [], False, False])
targetlookup = None
for prefix, suffix, ignore, chain in contexts:
if lookup.sub is not None:
self._gsubLookup(lookup, prefix, suffix, ignore, chain,
fealookup)
if lookup.pos is not None:
if self._settings.get("COMPILER_USEEXTENSIONLOOKUPS"):
fealookup.use_extension = True
if prefix or suffix or chain or ignore:
if not ignore and targetlookup is None:
targetname = self._lookupName(lookup.name + " target")
targetlookup = ast.LookupBlock(targetname)
fealookup.targets = getattr(fealookup, "targets", [])
fealookup.targets.append(targetlookup)
self._gposLookup(lookup, targetlookup)
self._gposContextLookup(lookup, prefix, suffix, ignore,
fealookup, targetlookup)
else:
self._gposLookup(lookup, fealookup)