merger.py 文件源码

def _Lookup_PairPosFormat1_subtables_flatten(lst, font):
    assert _all_equal([l.ValueFormat2 == 0 for l in lst if l.PairSet]), "Report bug against fonttools."

    self = ot.PairPos()
    self.Format = 1
    self.Coverage = ot.Coverage()
    self.Coverage.Format = 1
    self.ValueFormat1 = reduce(int.__or__, [l.ValueFormat1 for l in lst], 0)
    self.ValueFormat2 = reduce(int.__or__, [l.ValueFormat2 for l in lst], 0)

    # Align them
    glyphs, padded = _merge_GlyphOrders(font,
                        [v.Coverage.glyphs for v in lst],
                        [v.PairSet for v in lst])

    self.Coverage.glyphs = glyphs
    self.PairSet = [_PairSet_flatten([v for v in values if v is not None], font)
                for values in zip(*padded)]
    self.PairSetCount = len(self.PairSet)
    return self