1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
|
import fontTools.feaLib.ast as feaast
from fontFeatures.ttLib.Positioning import lookup_type
def glyphref(g):
if len(g) == 1:
return feaast.GlyphName(g[0])
return feaast.GlyphClass([feaast.GlyphName(x) for x in sorted(g)])
def asFeaAST(self):
lut = lookup_type(self)
glyphs = [glyphref(x) for x in self.glyphs]
positionings = list(zip(glyphs, self.valuerecords))
if len(self.glyphs) == 1 or lut == 8:
return feaast.SinglePosStatement(
positionings,
[glyphref(x) for x in self.precontext],
[glyphref(x) for x in self.postcontext],
(lut == 8),
)
if lut == 2:
return feaast.PairPosStatement(
glyphs[0], self.valuerecords[0], glyphs[1], self.valuerecords[1]
)
raise ValueError()
|
