Source code for fontTools.voltLib.ast

from __future__ import print_function, division, absolute_import
from __future__ import unicode_literals
from fontTools.voltLib.error import VoltLibError


[docs]class Statement(object): def __init__(self, location): self.location = location
[docs] def build(self, builder): pass
[docs]class Expression(object): def __init__(self, location): self.location = location
[docs] def build(self, builder): pass
[docs]class Block(Statement): def __init__(self, location): Statement.__init__(self, location) self.statements = []
[docs] def build(self, builder): for s in self.statements: s.build(builder)
[docs]class VoltFile(Block): def __init__(self): Block.__init__(self, location=None)
[docs]class LookupBlock(Block): def __init__(self, location, name): Block.__init__(self, location) self.name = name
[docs] def build(self, builder): builder.start_lookup_block(self.location, self.name) Block.build(self, builder) builder.end_lookup_block()
[docs]class GlyphDefinition(Statement): def __init__(self, location, name, gid, gunicode, gtype, components): Statement.__init__(self, location) self.name = name self.id = gid self.unicode = gunicode self.type = gtype self.components = components
[docs]class GroupDefinition(Statement): def __init__(self, location, name, enum): Statement.__init__(self, location) self.name = name self.enum = enum self.glyphs_ = None
[docs] 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_
[docs]class GlyphName(Expression): """A single glyph name, such as cedilla.""" def __init__(self, location, glyph): Expression.__init__(self, location) self.glyph = glyph
[docs] def glyphSet(self): return frozenset((self.glyph,))
[docs]class Enum(Expression): """An enum""" def __init__(self, location, enum): Expression.__init__(self, location) self.enum = enum def __iter__(self): for e in self.glyphSet(): yield e
[docs] def glyphSet(self, groups=None): glyphs = set() for element in self.enum: if isinstance(element, (GroupName, Enum)): glyphs = glyphs.union(element.glyphSet(groups)) else: glyphs = glyphs.union(element.glyphSet()) return frozenset(glyphs)
[docs]class GroupName(Expression): """A glyph group""" def __init__(self, location, group, parser): Expression.__init__(self, location) self.group = group self.parser_ = parser
[docs] 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)
[docs]class Range(Expression): """A glyph range""" def __init__(self, location, start, end, parser): Expression.__init__(self, location) self.start = start self.end = end self.parser = parser
[docs] def glyphSet(self): glyphs = self.parser.glyph_range(self.start, self.end) return frozenset(glyphs)
[docs]class ScriptDefinition(Statement): def __init__(self, location, name, tag, langs): Statement.__init__(self, location) self.name = name self.tag = tag self.langs = langs
[docs]class LangSysDefinition(Statement): def __init__(self, location, name, tag, features): Statement.__init__(self, location) self.name = name self.tag = tag self.features = features
[docs]class FeatureDefinition(Statement): def __init__(self, location, name, tag, lookups): Statement.__init__(self, location) self.name = name self.tag = tag self.lookups = lookups
[docs]class LookupDefinition(Statement): def __init__(self, location, name, process_base, process_marks, direction, reversal, comments, context, sub, pos): Statement.__init__(self, location) self.name = name self.process_base = process_base self.process_marks = process_marks self.direction = direction self.reversal = reversal self.comments = comments self.context = context self.sub = sub self.pos = pos
[docs]class SubstitutionDefinition(Statement): def __init__(self, location, mapping): Statement.__init__(self, location) self.mapping = mapping
[docs]class SubstitutionSingleDefinition(SubstitutionDefinition): def __init__(self, location, mapping): SubstitutionDefinition.__init__(self, location, mapping)
[docs]class SubstitutionMultipleDefinition(SubstitutionDefinition): def __init__(self, location, mapping): SubstitutionDefinition.__init__(self, location, mapping)
[docs]class SubstitutionLigatureDefinition(SubstitutionDefinition): def __init__(self, location, mapping): SubstitutionDefinition.__init__(self, location, mapping)
[docs]class SubstitutionReverseChainingSingleDefinition(SubstitutionDefinition): def __init__(self, location, mapping): SubstitutionDefinition.__init__(self, location, mapping)
[docs]class PositionAttachDefinition(Statement): def __init__(self, location, coverage, coverage_to): Statement.__init__(self, location) self.coverage = coverage self.coverage_to = coverage_to
[docs]class PositionAttachCursiveDefinition(Statement): def __init__(self, location, coverages_exit, coverages_enter): Statement.__init__(self, location) self.coverages_exit = coverages_exit self.coverages_enter = coverages_enter
[docs]class PositionAdjustPairDefinition(Statement): def __init__(self, location, coverages_1, coverages_2, adjust_pair): Statement.__init__(self, location) self.coverages_1 = coverages_1 self.coverages_2 = coverages_2 self.adjust_pair = adjust_pair
[docs]class PositionAdjustSingleDefinition(Statement): def __init__(self, location, adjust_single): Statement.__init__(self, location) self.adjust_single = adjust_single
[docs]class ContextDefinition(Statement): def __init__(self, location, ex_or_in, left=[], right=[]): Statement.__init__(self, location) self.ex_or_in = ex_or_in self.left = left self.right = right
[docs]class AnchorDefinition(Statement): def __init__(self, location, name, gid, glyph_name, component, locked, pos): Statement.__init__(self, location) self.name = name self.gid = gid self.glyph_name = glyph_name self.component = component self.locked = locked self.pos = pos
[docs]class SettingDefinition(Statement): def __init__(self, location, name, value): Statement.__init__(self, location) self.name = name self.value = value