def test__groupScriptsByTagAndDirection(self, FontClass):
font = FontClass()
font.features.text = dedent("""
languagesystem DFLT dflt;
languagesystem latn dflt;
languagesystem latn TRK;
languagesystem arab dflt;
languagesystem arab URD;
languagesystem deva dflt;
languagesystem dev2 dflt;
""")
feaFile = parseLayoutFeatures(font)
scripts = ast.getScriptLanguageSystems(feaFile)
scriptGroups = KernFeatureWriter._groupScriptsByTagAndDirection(
scripts)
assert "kern" in scriptGroups
assert list(scriptGroups["kern"]["LTR"]) == [("latn", ["dflt",
"TRK "])]
assert list(scriptGroups["kern"]["RTL"]) == [("arab", ["dflt",
"URD "])]
assert "dist" in scriptGroups
assert list(scriptGroups["dist"]["LTR"]) == [
("deva", ["dflt"]),
("dev2", ["dflt"]),
]
def setContext(self, font, feaFile, compiler=None):
ctx = super().setContext(font, feaFile, compiler=compiler)
ctx.gdefClasses = self.getGDEFGlyphClasses()
ctx.kerning = self.getKerningData(font, feaFile,
self.getOrderedGlyphSet())
feaScripts = ast.getScriptLanguageSystems(feaFile)
ctx.scriptGroups = self._groupScriptsByTagAndDirection(feaScripts)
return ctx
def setContext(self, font, feaFile, compiler=None):
ctx = super(KernFeatureWriter, self).setContext(font,
feaFile,
compiler=compiler)
ctx.kerning = self.getKerningData(font, feaFile)
feaScripts = ast.getScriptLanguageSystems(feaFile)
ctx.scriptGroups = self._groupScriptsByTagAndDirection(feaScripts)
return ctx