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from __future__ import print_function, division, absolute_import
from __future__ import unicode_literals
from fontTools.voltLib.error import VoltLibError
class Statement(object):
def __init__(self, location=None):
self.location = location
def build(self, builder):
pass
class Expression(object):
def __init__(self, location=None):
self.location = location
def build(self, builder):
pass
class Block(Statement):
def __init__(self, location=None):
Statement.__init__(self, location)
self.statements = []
def build(self, builder):
for s in self.statements:
s.build(builder)
class VoltFile(Block):
def __init__(self):
Block.__init__(self, location=None)
class LookupBlock(Block):
def __init__(self, name, location=None):
Block.__init__(self, location)
self.name = name
def build(self, builder):
builder.start_lookup_block(self.location, self.name)
Block.build(self, builder)
builder.end_lookup_block()
class GlyphDefinition(Statement):
def __init__(self, name, gid, gunicode, gtype, components, location=None):
Statement.__init__(self, location)
self.name = name
self.id = gid
self.unicode = gunicode
self.type = gtype
self.components = components
class GroupDefinition(Statement):
def __init__(self, name, enum, location=None):
Statement.__init__(self, location)
self.name = name
self.enum = enum
self.glyphs_ = None
def glyphSet(self, groups=None):
if groups is not None and self.name in groups:
raise VoltLibError(
'Group "%s" contains itself.' % (self.name),
self.location)
if self.glyphs_ is None:
if groups is None:
groups = set({self.name})
else:
groups.add(self.name)
self.glyphs_ = self.enum.glyphSet(groups)
return self.glyphs_
class GlyphName(Expression):
"""A single glyph name, such as cedilla."""
def __init__(self, glyph, location=None):
Expression.__init__(self, location)
self.glyph = glyph
def glyphSet(self):
return (self.glyph,)
class Enum(Expression):
"""An enum"""
def __init__(self, enum, location=None):
Expression.__init__(self, location)
self.enum = enum
def __iter__(self):
for e in self.glyphSet():
yield e
def glyphSet(self, groups=None):
glyphs = []
for element in self.enum:
if isinstance(element, (GroupName, Enum)):
glyphs.extend(element.glyphSet(groups))
else:
glyphs.extend(element.glyphSet())
return tuple(glyphs)
class GroupName(Expression):
"""A glyph group"""
def __init__(self, group, parser, location=None):
Expression.__init__(self, location)
self.group = group
self.parser_ = parser
def glyphSet(self, groups=None):
group = self.parser_.resolve_group(self.group)
if group is not None:
self.glyphs_ = group.glyphSet(groups)
return self.glyphs_
else:
raise VoltLibError(
'Group "%s" is used but undefined.' % (self.group),
self.location)
class Range(Expression):
"""A glyph range"""
def __init__(self, start, end, parser, location=None):
Expression.__init__(self, location)
self.start = start
self.end = end
self.parser = parser
def glyphSet(self):
return tuple(self.parser.glyph_range(self.start, self.end))
class ScriptDefinition(Statement):
def __init__(self, name, tag, langs, location=None):
Statement.__init__(self, location)
self.name = name
self.tag = tag
self.langs = langs
class LangSysDefinition(Statement):
def __init__(self, name, tag, features, location=None):
Statement.__init__(self, location)
self.name = name
self.tag = tag
self.features = features
class FeatureDefinition(Statement):
def __init__(self, name, tag, lookups, location=None):
Statement.__init__(self, location)
self.name = name
self.tag = tag
self.lookups = lookups
class LookupDefinition(Statement):
def __init__(self, name, process_base, process_marks, mark_glyph_set,
direction, reversal, comments, context, sub, pos,
location=None):
Statement.__init__(self, location)
self.name = name
self.process_base = process_base
self.process_marks = process_marks
self.mark_glyph_set = mark_glyph_set
self.direction = direction
self.reversal = reversal
self.comments = comments
self.context = context
self.sub = sub
self.pos = pos
class SubstitutionDefinition(Statement):
def __init__(self, mapping, location=None):
Statement.__init__(self, location)
self.mapping = mapping
class SubstitutionSingleDefinition(SubstitutionDefinition):
pass
class SubstitutionMultipleDefinition(SubstitutionDefinition):
pass
class SubstitutionLigatureDefinition(SubstitutionDefinition):
pass
class SubstitutionReverseChainingSingleDefinition(SubstitutionDefinition):
pass
class PositionAttachDefinition(Statement):
def __init__(self, coverage, coverage_to, location=None):
Statement.__init__(self, location)
self.coverage = coverage
self.coverage_to = coverage_to
class PositionAttachCursiveDefinition(Statement):
def __init__(self, coverages_exit, coverages_enter, location=None):
Statement.__init__(self, location)
self.coverages_exit = coverages_exit
self.coverages_enter = coverages_enter
class PositionAdjustPairDefinition(Statement):
def __init__(self, coverages_1, coverages_2, adjust_pair, location=None):
Statement.__init__(self, location)
self.coverages_1 = coverages_1
self.coverages_2 = coverages_2
self.adjust_pair = adjust_pair
class PositionAdjustSingleDefinition(Statement):
def __init__(self, adjust_single, location=None):
Statement.__init__(self, location)
self.adjust_single = adjust_single
class ContextDefinition(Statement):
def __init__(self, ex_or_in, left=None, right=None, location=None):
Statement.__init__(self, location)
self.ex_or_in = ex_or_in
self.left = left if left is not None else []
self.right = right if right is not None else []
class AnchorDefinition(Statement):
def __init__(self, name, gid, glyph_name, component, locked,
pos, location=None):
Statement.__init__(self, location)
self.name = name
self.gid = gid
self.glyph_name = glyph_name
self.component = component
self.locked = locked
self.pos = pos
class SettingDefinition(Statement):
def __init__(self, name, value, location=None):
Statement.__init__(self, location)
self.name = name
self.value = value
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