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Merge pull request #2101 from simoncozens/alternate-contextual-representations

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[otlLib] Build format 1 and format 2 contextual lookups
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Simon Cozens 2020-11-18 07:34:04 -08:00 committed by GitHub
commit 3e964ad8da
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GPG Key ID: 4AEE18F83AFDEB23
15 changed files with 1037 additions and 340 deletions
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216
Lib/fontTools/otlLib/builder.py
View File

@ -2,10 +2,16 @@ from collections import namedtuple, OrderedDict
from fontTools.misc.fixedTools import fixedToFloat
from fontTools import ttLib
from fontTools.ttLib.tables import otTables as ot
from fontTools.ttLib.tables.otBase import ValueRecord, valueRecordFormatDict
from fontTools.ttLib.tables.otBase import (
ValueRecord,
valueRecordFormatDict,
OTTableWriter,
CountReference,
)
from fontTools.ttLib.tables import otBase
from fontTools.otlLib.error import OpenTypeLibError
import logging
import copy
log = logging.getLogger(__name__)
@ -330,6 +336,19 @@ class ChainContextualBuilder(LookupBuilder):
# Squish any empty subtables
return [x for x in ruleset if len(x.rules) > 0]
def getCompiledSize_(self, subtables):
size = 0
for st in subtables:
w = OTTableWriter()
w["LookupType"] = CountReference(
{"LookupType": st.LookupType}, "LookupType"
)
# We need to make a copy here because compiling
# modifies the subtable (finalizing formats etc.)
copy.deepcopy(st).compile(w, self.font)
size += len(w.getAllData())
return size
def build(self):
"""Build the lookup.
@ -342,12 +361,153 @@ class ChainContextualBuilder(LookupBuilder):
rulesets = self.rulesets()
chaining = any(ruleset.hasPrefixOrSuffix for ruleset in rulesets)
for ruleset in rulesets:
# Determine format strategy. We try to build formats 1, 2 and 3
# subtables and then work out which is best. candidates list holds
# the subtables in each format for this ruleset (including a dummy
# "format 0" to make the addressing match the format numbers).
# We can always build a format 3 lookup by accumulating each of
# the rules into a list, so start with that.
candidates = [None, None, None, []]
for rule in ruleset.rules:
subtables.append(self.buildFormat3Subtable(rule, chaining))
candidates[3].append(self.buildFormat3Subtable(rule, chaining))
# Can we express the whole ruleset as a format 2 subtable?
classdefs = ruleset.format2ClassDefs()
if classdefs:
candidates[2] = [
self.buildFormat2Subtable(ruleset, classdefs, chaining)
]
if not ruleset.hasAnyGlyphClasses:
candidates[1] = [self.buildFormat1Subtable(ruleset, chaining)]
candidates = [x for x in candidates if x is not None]
winner = min(candidates, key=self.getCompiledSize_)
subtables.extend(winner)
# If we are not chaining, lookup type will be automatically fixed by
# buildLookup_
return self.buildLookup_(subtables)
def buildFormat1Subtable(self, ruleset, chaining=True):
st = self.newSubtable_(chaining=chaining)
st.Format = 1
st.populateDefaults()
coverage = set()
rulesetsByFirstGlyph = {}
ruleAttr = self.ruleAttr_(format=1, chaining=chaining)
for rule in ruleset.rules:
ruleAsSubtable = self.newRule_(format=1, chaining=chaining)
if chaining:
ruleAsSubtable.BacktrackGlyphCount = len(rule.prefix)
ruleAsSubtable.LookAheadGlyphCount = len(rule.suffix)
ruleAsSubtable.Backtrack = [list(x)[0] for x in reversed(rule.prefix)]
ruleAsSubtable.LookAhead = [list(x)[0] for x in rule.suffix]
ruleAsSubtable.InputGlyphCount = len(rule.glyphs)
else:
ruleAsSubtable.GlyphCount = len(rule.glyphs)
ruleAsSubtable.Input = [list(x)[0] for x in rule.glyphs[1:]]
self.buildLookupList(rule, ruleAsSubtable)
firstGlyph = list(rule.glyphs[0])[0]
if firstGlyph not in rulesetsByFirstGlyph:
coverage.add(firstGlyph)
rulesetsByFirstGlyph[firstGlyph] = []
rulesetsByFirstGlyph[firstGlyph].append(ruleAsSubtable)
st.Coverage = buildCoverage(coverage, self.glyphMap)
ruleSets = []
for g in st.Coverage.glyphs:
ruleSet = self.newRuleSet_(format=1, chaining=chaining)
setattr(ruleSet, ruleAttr, rulesetsByFirstGlyph[g])
setattr(ruleSet, f"{ruleAttr}Count", len(rulesetsByFirstGlyph[g]))
ruleSets.append(ruleSet)
setattr(st, self.ruleSetAttr_(format=1, chaining=chaining), ruleSets)
setattr(
st, self.ruleSetAttr_(format=1, chaining=chaining) + "Count", len(ruleSets)
)
return st
def buildFormat2Subtable(self, ruleset, classdefs, chaining=True):
st = self.newSubtable_(chaining=chaining)
st.Format = 2
st.populateDefaults()
if chaining:
(
st.BacktrackClassDef,
st.InputClassDef,
st.LookAheadClassDef,
) = [c.build() for c in classdefs]
else:
st.ClassDef = classdefs[1].build()
inClasses = classdefs[1].classes()
classSets = []
for _ in inClasses:
classSet = self.newRuleSet_(format=2, chaining=chaining)
classSets.append(classSet)
coverage = set()
classRuleAttr = self.ruleAttr_(format=2, chaining=chaining)
for rule in ruleset.rules:
ruleAsSubtable = self.newRule_(format=2, chaining=chaining)
if chaining:
ruleAsSubtable.BacktrackGlyphCount = len(rule.prefix)
ruleAsSubtable.LookAheadGlyphCount = len(rule.suffix)
# The glyphs in the rule may be list, tuple, odict_keys...
# Order is not important anyway because they are guaranteed
# to be members of the same class.
ruleAsSubtable.Backtrack = [
st.BacktrackClassDef.classDefs[list(x)[0]]
for x in reversed(rule.prefix)
]
ruleAsSubtable.LookAhead = [
st.LookAheadClassDef.classDefs[list(x)[0]] for x in rule.suffix
]
ruleAsSubtable.InputGlyphCount = len(rule.glyphs)
ruleAsSubtable.Input = [
st.InputClassDef.classDefs[list(x)[0]] for x in rule.glyphs[1:]
]
setForThisRule = classSets[
st.InputClassDef.classDefs[list(rule.glyphs[0])[0]]
]
else:
ruleAsSubtable.GlyphCount = len(rule.glyphs)
ruleAsSubtable.Class = [ # The spec calls this InputSequence
st.ClassDef.classDefs[list(x)[0]] for x in rule.glyphs[1:]
]
setForThisRule = classSets[
st.ClassDef.classDefs[list(rule.glyphs[0])[0]]
]
self.buildLookupList(rule, ruleAsSubtable)
coverage |= set(rule.glyphs[0])
getattr(setForThisRule, classRuleAttr).append(ruleAsSubtable)
setattr(
setForThisRule,
f"{classRuleAttr}Count",
getattr(setForThisRule, f"{classRuleAttr}Count") + 1,
)
setattr(st, self.ruleSetAttr_(format=2, chaining=chaining), classSets)
setattr(
st, self.ruleSetAttr_(format=2, chaining=chaining) + "Count", len(classSets)
)
st.Coverage = buildCoverage(coverage, self.glyphMap)
return st
def buildFormat3Subtable(self, rule, chaining=True):
st = self.newSubtable_(chaining=chaining)
st.Format = 3
@ -357,7 +517,10 @@ class ChainContextualBuilder(LookupBuilder):
self.setInputCoverage_(rule.glyphs, st)
else:
self.setCoverage_(rule.glyphs, st)
self.buildLookupList(rule, st)
return st
def buildLookupList(self, rule, st):
for sequenceIndex, lookupList in enumerate(rule.lookups):
if lookupList is not None:
if not isinstance(lookupList, list):
@ -377,7 +540,6 @@ class ChainContextualBuilder(LookupBuilder):
rec = self.newLookupRecord_(st)
rec.SequenceIndex = sequenceIndex
rec.LookupListIndex = l.lookup_index
return st
def add_subtable_break(self, location):
self.rules.append(
@ -398,6 +560,54 @@ class ChainContextualBuilder(LookupBuilder):
setattr(st, f"{self.subtable_type}LookupRecord", [])
return st
# Format 1 and format 2 GSUB5/GSUB6/GPOS7/GPOS8 rulesets and rules form a family:
#
# format 1 ruleset format 1 rule format 2 ruleset format 2 rule
# GSUB5 SubRuleSet SubRule SubClassSet SubClassRule
# GSUB6 ChainSubRuleSet ChainSubRule ChainSubClassSet ChainSubClassRule
# GPOS7 PosRuleSet PosRule PosClassSet PosClassRule
# GPOS8 ChainPosRuleSet ChainPosRule ChainPosClassSet ChainPosClassRule
#
# The following functions generate the attribute names and subtables according
# to this naming convention.
def ruleSetAttr_(self, format=1, chaining=True):
if format == 1:
formatType = "Rule"
elif format == 2:
formatType = "Class"
else:
raise AssertionError(formatType)
subtablename = f"{self.subtable_type[0:3]}{formatType}Set" # Sub, not Subst.
if chaining:
subtablename = "Chain" + subtablename
return subtablename
def ruleAttr_(self, format=1, chaining=True):
if format == 1:
formatType = ""
elif format == 2:
formatType = "Class"
else:
raise AssertionError(formatType)
subtablename = f"{self.subtable_type[0:3]}{formatType}Rule" # Sub, not Subst.
if chaining:
subtablename = "Chain" + subtablename
return subtablename
def newRuleSet_(self, format=1, chaining=True):
st = getattr(
ot, self.ruleSetAttr_(format, chaining)
)() # ot.ChainPosRuleSet()/ot.SubRuleSet()/etc.
st.populateDefaults()
return st
def newRule_(self, format=1, chaining=True):
st = getattr(
ot, self.ruleAttr_(format, chaining)
)() # ot.ChainPosClassRule()/ot.SubClassRule()/etc.
st.populateDefaults()
return st
def attachSubtableWithCount_(
self, st, subtable_name, count_name, existing=None, index=None, chaining=False
):

3
Tests/feaLib/builder_test.py
View File

@ -72,7 +72,8 @@ class BuilderTest(unittest.TestCase):
PairPosSubtable ChainSubstSubtable SubstSubtable ChainPosSubtable
LigatureSubtable AlternateSubtable MultipleSubstSubtable
SingleSubstSubtable aalt_chain_contextual_subst AlternateChained
MultipleLookupsPerGlyph MultipleLookupsPerGlyph2
MultipleLookupsPerGlyph MultipleLookupsPerGlyph2 GSUB_6_formats
GSUB_5_formats
""".split()
def __init__(self, methodName):

36
Tests/feaLib/data/ChainPosSubtable.ttx
View File

@ -67,24 +67,26 @@
<LookupListIndex value="1"/>
</PosLookupRecord>
</ChainContextPos>
<ChainContextPos index="1" Format="3">
<!-- BacktrackGlyphCount=1 -->
<BacktrackCoverage index="0">
<Glyph value="X"/>
</BacktrackCoverage>
<!-- InputGlyphCount=1 -->
<InputCoverage index="0">
<ChainContextPos index="1" Format="1">
<Coverage>
<Glyph value="A"/>
</InputCoverage>
<!-- LookAheadGlyphCount=1 -->
<LookAheadCoverage index="0">
<Glyph value="Y"/>
</LookAheadCoverage>
<!-- PosCount=1 -->
<PosLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="2"/>
</PosLookupRecord>
</Coverage>
<!-- ChainPosRuleSetCount=1 -->
<ChainPosRuleSet index="0">
<!-- ChainPosRuleCount=1 -->
<ChainPosRule index="0">
<!-- BacktrackGlyphCount=1 -->
<Backtrack index="0" value="X"/>
<!-- InputGlyphCount=1 -->
<!-- LookAheadGlyphCount=1 -->
<LookAhead index="0" value="Y"/>
<!-- PosCount=1 -->
<PosLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="2"/>
</PosLookupRecord>
</ChainPosRule>
</ChainPosRuleSet>
</ChainContextPos>
<ChainContextPos index="2" Format="3">
<!-- BacktrackGlyphCount=1 -->

68
Tests/feaLib/data/GPOS_8.ttx
View File

@ -34,42 +34,40 @@
<LookupType value="8"/>
<LookupFlag value="0"/>
<!-- SubTableCount=1 -->
<ChainContextPos index="0" Format="3">
<!-- BacktrackGlyphCount=1 -->
<BacktrackCoverage index="0">
<Glyph value="A"/>
</BacktrackCoverage>
<!-- InputGlyphCount=4 -->
<InputCoverage index="0">
<ChainContextPos index="0" Format="1">
<Coverage>
<Glyph value="one"/>
</InputCoverage>
<InputCoverage index="1">
<Glyph value="two"/>
</InputCoverage>
<InputCoverage index="2">
<Glyph value="one"/>
</InputCoverage>
<InputCoverage index="3">
<Glyph value="two"/>
</InputCoverage>
<!-- LookAheadGlyphCount=0 -->
<!-- PosCount=4 -->
<PosLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="1"/>
</PosLookupRecord>
<PosLookupRecord index="1">
<SequenceIndex value="1"/>
<LookupListIndex value="1"/>
</PosLookupRecord>
<PosLookupRecord index="2">
<SequenceIndex value="2"/>
<LookupListIndex value="2"/>
</PosLookupRecord>
<PosLookupRecord index="3">
<SequenceIndex value="3"/>
<LookupListIndex value="2"/>
</PosLookupRecord>
</Coverage>
<!-- ChainPosRuleSetCount=1 -->
<ChainPosRuleSet index="0">
<!-- ChainPosRuleCount=1 -->
<ChainPosRule index="0">
<!-- BacktrackGlyphCount=1 -->
<Backtrack index="0" value="A"/>
<!-- InputGlyphCount=4 -->
<Input index="0" value="two"/>
<Input index="1" value="one"/>
<Input index="2" value="two"/>
<!-- LookAheadGlyphCount=0 -->
<!-- PosCount=4 -->
<PosLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="1"/>
</PosLookupRecord>
<PosLookupRecord index="1">
<SequenceIndex value="1"/>
<LookupListIndex value="1"/>
</PosLookupRecord>
<PosLookupRecord index="2">
<SequenceIndex value="2"/>
<LookupListIndex value="2"/>
</PosLookupRecord>
<PosLookupRecord index="3">
<SequenceIndex value="3"/>
<LookupListIndex value="2"/>
</PosLookupRecord>
</ChainPosRule>
</ChainPosRuleSet>
</ChainContextPos>
</Lookup>
<Lookup index="1">

20
Tests/feaLib/data/GSUB_5_formats.fea Normal file
View File

@ -0,0 +1,20 @@
lookup GSUB5f1 {
ignore sub three four;
ignore sub four five;
} GSUB5f1;
lookup GSUB5f2 {
ignore sub [a - z] [A - H] [I - Z];
ignore sub [a - z] [A - H] [I - Z];
ignore sub [a - z] [I - Z] [A - H];
} GSUB5f2;
lookup GSUB5f3 {
ignore sub e;
} GSUB5f3;
feature test {
lookup GSUB5f1;
lookup GSUB5f2;
lookup GSUB5f3;
} test;

197
Tests/feaLib/data/GSUB_5_formats.ttx Normal file
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@ -0,0 +1,197 @@
<?xml version="1.0" encoding="UTF-8"?>
<ttFont>
<GSUB>
<Version value="0x00010000"/>
<ScriptList>
<!-- ScriptCount=1 -->
<ScriptRecord index="0">
<ScriptTag value="DFLT"/>
<Script>
<DefaultLangSys>
<ReqFeatureIndex value="65535"/>
<!-- FeatureCount=1 -->
<FeatureIndex index="0" value="0"/>
</DefaultLangSys>
<!-- LangSysCount=0 -->
</Script>
</ScriptRecord>
</ScriptList>
<FeatureList>
<!-- FeatureCount=1 -->
<FeatureRecord index="0">
<FeatureTag value="test"/>
<Feature>
<!-- LookupCount=3 -->
<LookupListIndex index="0" value="0"/>
<LookupListIndex index="1" value="1"/>
<LookupListIndex index="2" value="2"/>
</Feature>
</FeatureRecord>
</FeatureList>
<LookupList>
<!-- LookupCount=3 -->
<Lookup index="0">
<LookupType value="5"/>
<LookupFlag value="0"/>
<!-- SubTableCount=1 -->
<ContextSubst index="0" Format="1">
<Coverage>
<Glyph value="three"/>
<Glyph value="four"/>
</Coverage>
<!-- SubRuleSetCount=2 -->
<SubRuleSet index="0">
<!-- SubRuleCount=1 -->
<SubRule index="0">
<!-- GlyphCount=2 -->
<!-- SubstCount=0 -->
<Input index="0" value="four"/>
</SubRule>
</SubRuleSet>
<SubRuleSet index="1">
<!-- SubRuleCount=1 -->
<SubRule index="0">
<!-- GlyphCount=2 -->
<!-- SubstCount=0 -->
<Input index="0" value="five"/>
</SubRule>
</SubRuleSet>
</ContextSubst>
</Lookup>
<Lookup index="1">
<LookupType value="5"/>
<LookupFlag value="0"/>
<!-- SubTableCount=1 -->
<ContextSubst index="0" Format="2">
<Coverage>
<Glyph value="a"/>
<Glyph value="b"/>
<Glyph value="c"/>
<Glyph value="d"/>
<Glyph value="e"/>
<Glyph value="f"/>
<Glyph value="g"/>
<Glyph value="h"/>
<Glyph value="i"/>
<Glyph value="j"/>
<Glyph value="k"/>
<Glyph value="l"/>
<Glyph value="m"/>
<Glyph value="n"/>
<Glyph value="o"/>
<Glyph value="p"/>
<Glyph value="q"/>
<Glyph value="r"/>
<Glyph value="s"/>
<Glyph value="t"/>
<Glyph value="u"/>
<Glyph value="v"/>
<Glyph value="w"/>
<Glyph value="x"/>
<Glyph value="y"/>
<Glyph value="z"/>
</Coverage>
<ClassDef>
<ClassDef glyph="A" class="3"/>
<ClassDef glyph="B" class="3"/>
<ClassDef glyph="C" class="3"/>
<ClassDef glyph="D" class="3"/>
<ClassDef glyph="E" class="3"/>
<ClassDef glyph="F" class="3"/>
<ClassDef glyph="G" class="3"/>
<ClassDef glyph="H" class="3"/>
<ClassDef glyph="I" class="2"/>
<ClassDef glyph="J" class="2"/>
<ClassDef glyph="K" class="2"/>
<ClassDef glyph="L" class="2"/>
<ClassDef glyph="M" class="2"/>
<ClassDef glyph="N" class="2"/>
<ClassDef glyph="O" class="2"/>
<ClassDef glyph="P" class="2"/>
<ClassDef glyph="Q" class="2"/>
<ClassDef glyph="R" class="2"/>
<ClassDef glyph="S" class="2"/>
<ClassDef glyph="T" class="2"/>
<ClassDef glyph="U" class="2"/>
<ClassDef glyph="V" class="2"/>
<ClassDef glyph="W" class="2"/>
<ClassDef glyph="X" class="2"/>
<ClassDef glyph="Y" class="2"/>
<ClassDef glyph="Z" class="2"/>
<ClassDef glyph="a" class="1"/>
<ClassDef glyph="b" class="1"/>
<ClassDef glyph="c" class="1"/>
<ClassDef glyph="d" class="1"/>
<ClassDef glyph="e" class="1"/>
<ClassDef glyph="f" class="1"/>
<ClassDef glyph="g" class="1"/>
<ClassDef glyph="h" class="1"/>
<ClassDef glyph="i" class="1"/>
<ClassDef glyph="j" class="1"/>
<ClassDef glyph="k" class="1"/>
<ClassDef glyph="l" class="1"/>
<ClassDef glyph="m" class="1"/>
<ClassDef glyph="n" class="1"/>
<ClassDef glyph="o" class="1"/>
<ClassDef glyph="p" class="1"/>
<ClassDef glyph="q" class="1"/>
<ClassDef glyph="r" class="1"/>
<ClassDef glyph="s" class="1"/>
<ClassDef glyph="t" class="1"/>
<ClassDef glyph="u" class="1"/>
<ClassDef glyph="v" class="1"/>
<ClassDef glyph="w" class="1"/>
<ClassDef glyph="x" class="1"/>
<ClassDef glyph="y" class="1"/>
<ClassDef glyph="z" class="1"/>
</ClassDef>
<!-- SubClassSetCount=4 -->
<SubClassSet index="0">
<!-- SubClassRuleCount=0 -->
</SubClassSet>
<SubClassSet index="1">
<!-- SubClassRuleCount=3 -->
<SubClassRule index="0">
<!-- GlyphCount=3 -->
<!-- SubstCount=0 -->
<Class index="0" value="3"/>
<Class index="1" value="2"/>
</SubClassRule>
<SubClassRule index="1">
<!-- GlyphCount=3 -->
<!-- SubstCount=0 -->
<Class index="0" value="3"/>
<Class index="1" value="2"/>
</SubClassRule>
<SubClassRule index="2">
<!-- GlyphCount=3 -->
<!-- SubstCount=0 -->
<Class index="0" value="2"/>
<Class index="1" value="3"/>
</SubClassRule>
</SubClassSet>
<SubClassSet index="2">
<!-- SubClassRuleCount=0 -->
</SubClassSet>
<SubClassSet index="3">
<!-- SubClassRuleCount=0 -->
</SubClassSet>
</ContextSubst>
</Lookup>
<Lookup index="2">
<LookupType value="5"/>
<LookupFlag value="0"/>
<!-- SubTableCount=1 -->
<ContextSubst index="0" Format="3">
<!-- GlyphCount=1 -->
<!-- SubstCount=0 -->
<Coverage index="0">
<Glyph value="e"/>
</Coverage>
</ContextSubst>
</Lookup>
</LookupList>
</GSUB>
</ttFont>

52
Tests/feaLib/data/GSUB_6.ttx
View File

@ -229,36 +229,30 @@
<LookupType value="6"/>
<LookupFlag value="0"/>
<!-- SubTableCount=1 -->
<ChainContextSubst index="0" Format="3">
<!-- BacktrackGlyphCount=3 -->
<BacktrackCoverage index="0">
<Glyph value="E"/>
</BacktrackCoverage>
<BacktrackCoverage index="1">
<Glyph value="D"/>
</BacktrackCoverage>
<BacktrackCoverage index="2">
<Glyph value="A"/>
</BacktrackCoverage>
<!-- InputGlyphCount=1 -->
<InputCoverage index="0">
<ChainContextSubst index="0" Format="1">
<Coverage>
<Glyph value="c_t"/>
</InputCoverage>
<!-- LookAheadGlyphCount=3 -->
<LookAheadCoverage index="0">
<Glyph value="V"/>
</LookAheadCoverage>
<LookAheadCoverage index="1">
<Glyph value="W"/>
</LookAheadCoverage>
<LookAheadCoverage index="2">
<Glyph value="X"/>
</LookAheadCoverage>
<!-- SubstCount=1 -->
<SubstLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="2"/>
</SubstLookupRecord>
</Coverage>
<!-- ChainSubRuleSetCount=1 -->
<ChainSubRuleSet index="0">
<!-- ChainSubRuleCount=1 -->
<ChainSubRule index="0">
<!-- BacktrackGlyphCount=3 -->
<Backtrack index="0" value="E"/>
<Backtrack index="1" value="D"/>
<Backtrack index="2" value="A"/>
<!-- InputGlyphCount=1 -->
<!-- LookAheadGlyphCount=3 -->
<LookAhead index="0" value="V"/>
<LookAhead index="1" value="W"/>
<LookAhead index="2" value="X"/>
<!-- SubstCount=1 -->
<SubstLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="2"/>
</SubstLookupRecord>
</ChainSubRule>
</ChainSubRuleSet>
</ChainContextSubst>
</Lookup>
</LookupList>

20
Tests/feaLib/data/GSUB_6_formats.fea Normal file
View File

@ -0,0 +1,20 @@
lookup GSUB6f1 {
ignore sub one two three' four' five six seven;
ignore sub two one three' four' six five seven;
} GSUB6f1;
lookup GSUB6f2 {
ignore sub [A - H] [I - Z] [a - z]' [A - H]' [I - Z]';
ignore sub [I - Z] [A - H] [a - z]' [A - H]' [I - Z]';
ignore sub [A - H] [I - Z] [a - z]' [I - Z]' [A - H]';
} GSUB6f2;
lookup GSUB6f3 {
ignore sub [space comma semicolon] e';
} GSUB6f3;
feature test {
lookup GSUB6f1;
lookup GSUB6f2;
lookup GSUB6f3;
} test;

256
Tests/feaLib/data/GSUB_6_formats.ttx Normal file
View File

@ -0,0 +1,256 @@
<?xml version="1.0" encoding="UTF-8"?>
<ttFont>
<GSUB>
<Version value="0x00010000"/>
<ScriptList>
<!-- ScriptCount=1 -->
<ScriptRecord index="0">
<ScriptTag value="DFLT"/>
<Script>
<DefaultLangSys>
<ReqFeatureIndex value="65535"/>
<!-- FeatureCount=1 -->
<FeatureIndex index="0" value="0"/>
</DefaultLangSys>
<!-- LangSysCount=0 -->
</Script>
</ScriptRecord>
</ScriptList>
<FeatureList>
<!-- FeatureCount=1 -->
<FeatureRecord index="0">
<FeatureTag value="test"/>
<Feature>
<!-- LookupCount=3 -->
<LookupListIndex index="0" value="0"/>
<LookupListIndex index="1" value="1"/>
<LookupListIndex index="2" value="2"/>
</Feature>
</FeatureRecord>
</FeatureList>
<LookupList>
<!-- LookupCount=3 -->
<Lookup index="0">
<LookupType value="6"/>
<LookupFlag value="0"/>
<!-- SubTableCount=1 -->
<ChainContextSubst index="0" Format="1">
<Coverage>
<Glyph value="three"/>
</Coverage>
<!-- ChainSubRuleSetCount=1 -->
<ChainSubRuleSet index="0">
<!-- ChainSubRuleCount=2 -->
<ChainSubRule index="0">
<!-- BacktrackGlyphCount=2 -->
<Backtrack index="0" value="two"/>
<Backtrack index="1" value="one"/>
<!-- InputGlyphCount=2 -->
<Input index="0" value="four"/>
<!-- LookAheadGlyphCount=3 -->
<LookAhead index="0" value="five"/>
<LookAhead index="1" value="six"/>
<LookAhead index="2" value="seven"/>
<!-- SubstCount=0 -->
</ChainSubRule>
<ChainSubRule index="1">
<!-- BacktrackGlyphCount=2 -->
<Backtrack index="0" value="one"/>
<Backtrack index="1" value="two"/>
<!-- InputGlyphCount=2 -->
<Input index="0" value="four"/>
<!-- LookAheadGlyphCount=3 -->
<LookAhead index="0" value="six"/>
<LookAhead index="1" value="five"/>
<LookAhead index="2" value="seven"/>
<!-- SubstCount=0 -->
</ChainSubRule>
</ChainSubRuleSet>
</ChainContextSubst>
</Lookup>
<Lookup index="1">
<LookupType value="6"/>
<LookupFlag value="0"/>
<!-- SubTableCount=1 -->
<ChainContextSubst index="0" Format="2">
<Coverage>
<Glyph value="a"/>
<Glyph value="b"/>
<Glyph value="c"/>
<Glyph value="d"/>
<Glyph value="e"/>
<Glyph value="f"/>
<Glyph value="g"/>
<Glyph value="h"/>
<Glyph value="i"/>
<Glyph value="j"/>
<Glyph value="k"/>
<Glyph value="l"/>
<Glyph value="m"/>
<Glyph value="n"/>
<Glyph value="o"/>
<Glyph value="p"/>
<Glyph value="q"/>
<Glyph value="r"/>
<Glyph value="s"/>
<Glyph value="t"/>
<Glyph value="u"/>
<Glyph value="v"/>
<Glyph value="w"/>
<Glyph value="x"/>
<Glyph value="y"/>
<Glyph value="z"/>
</Coverage>
<BacktrackClassDef>
<ClassDef glyph="A" class="2"/>
<ClassDef glyph="B" class="2"/>
<ClassDef glyph="C" class="2"/>
<ClassDef glyph="D" class="2"/>
<ClassDef glyph="E" class="2"/>
<ClassDef glyph="F" class="2"/>
<ClassDef glyph="G" class="2"/>
<ClassDef glyph="H" class="2"/>
<ClassDef glyph="I" class="1"/>
<ClassDef glyph="J" class="1"/>
<ClassDef glyph="K" class="1"/>
<ClassDef glyph="L" class="1"/>
<ClassDef glyph="M" class="1"/>
<ClassDef glyph="N" class="1"/>
<ClassDef glyph="O" class="1"/>
<ClassDef glyph="P" class="1"/>
<ClassDef glyph="Q" class="1"/>
<ClassDef glyph="R" class="1"/>
<ClassDef glyph="S" class="1"/>
<ClassDef glyph="T" class="1"/>
<ClassDef glyph="U" class="1"/>
<ClassDef glyph="V" class="1"/>
<ClassDef glyph="W" class="1"/>
<ClassDef glyph="X" class="1"/>
<ClassDef glyph="Y" class="1"/>
<ClassDef glyph="Z" class="1"/>
</BacktrackClassDef>
<InputClassDef>
<ClassDef glyph="A" class="3"/>
<ClassDef glyph="B" class="3"/>
<ClassDef glyph="C" class="3"/>
<ClassDef glyph="D" class="3"/>
<ClassDef glyph="E" class="3"/>
<ClassDef glyph="F" class="3"/>
<ClassDef glyph="G" class="3"/>
<ClassDef glyph="H" class="3"/>
<ClassDef glyph="I" class="2"/>
<ClassDef glyph="J" class="2"/>
<ClassDef glyph="K" class="2"/>
<ClassDef glyph="L" class="2"/>
<ClassDef glyph="M" class="2"/>
<ClassDef glyph="N" class="2"/>
<ClassDef glyph="O" class="2"/>
<ClassDef glyph="P" class="2"/>
<ClassDef glyph="Q" class="2"/>
<ClassDef glyph="R" class="2"/>
<ClassDef glyph="S" class="2"/>
<ClassDef glyph="T" class="2"/>
<ClassDef glyph="U" class="2"/>
<ClassDef glyph="V" class="2"/>
<ClassDef glyph="W" class="2"/>
<ClassDef glyph="X" class="2"/>
<ClassDef glyph="Y" class="2"/>
<ClassDef glyph="Z" class="2"/>
<ClassDef glyph="a" class="1"/>
<ClassDef glyph="b" class="1"/>
<ClassDef glyph="c" class="1"/>
<ClassDef glyph="d" class="1"/>
<ClassDef glyph="e" class="1"/>
<ClassDef glyph="f" class="1"/>
<ClassDef glyph="g" class="1"/>
<ClassDef glyph="h" class="1"/>
<ClassDef glyph="i" class="1"/>
<ClassDef glyph="j" class="1"/>
<ClassDef glyph="k" class="1"/>
<ClassDef glyph="l" class="1"/>
<ClassDef glyph="m" class="1"/>
<ClassDef glyph="n" class="1"/>
<ClassDef glyph="o" class="1"/>
<ClassDef glyph="p" class="1"/>
<ClassDef glyph="q" class="1"/>
<ClassDef glyph="r" class="1"/>
<ClassDef glyph="s" class="1"/>
<ClassDef glyph="t" class="1"/>
<ClassDef glyph="u" class="1"/>
<ClassDef glyph="v" class="1"/>
<ClassDef glyph="w" class="1"/>
<ClassDef glyph="x" class="1"/>
<ClassDef glyph="y" class="1"/>
<ClassDef glyph="z" class="1"/>
</InputClassDef>
<LookAheadClassDef>
</LookAheadClassDef>
<!-- ChainSubClassSetCount=4 -->
<ChainSubClassSet index="0">
<!-- ChainSubClassRuleCount=0 -->
</ChainSubClassSet>
<ChainSubClassSet index="1">
<!-- ChainSubClassRuleCount=3 -->
<ChainSubClassRule index="0">
<!-- BacktrackGlyphCount=2 -->
<Backtrack index="0" value="1"/>
<Backtrack index="1" value="2"/>
<!-- InputGlyphCount=3 -->
<Input index="0" value="3"/>
<Input index="1" value="2"/>
<!-- LookAheadGlyphCount=0 -->
<!-- SubstCount=0 -->
</ChainSubClassRule>
<ChainSubClassRule index="1">
<!-- BacktrackGlyphCount=2 -->
<Backtrack index="0" value="2"/>
<Backtrack index="1" value="1"/>
<!-- InputGlyphCount=3 -->
<Input index="0" value="3"/>
<Input index="1" value="2"/>
<!-- LookAheadGlyphCount=0 -->
<!-- SubstCount=0 -->
</ChainSubClassRule>
<ChainSubClassRule index="2">
<!-- BacktrackGlyphCount=2 -->
<Backtrack index="0" value="1"/>
<Backtrack index="1" value="2"/>
<!-- InputGlyphCount=3 -->
<Input index="0" value="2"/>
<Input index="1" value="3"/>
<!-- LookAheadGlyphCount=0 -->
<!-- SubstCount=0 -->
</ChainSubClassRule>
</ChainSubClassSet>
<ChainSubClassSet index="2">
<!-- ChainSubClassRuleCount=0 -->
</ChainSubClassSet>
<ChainSubClassSet index="3">
<!-- ChainSubClassRuleCount=0 -->
</ChainSubClassSet>
</ChainContextSubst>
</Lookup>
<Lookup index="2">
<LookupType value="6"/>
<LookupFlag value="0"/>
<!-- SubTableCount=1 -->
<ChainContextSubst index="0" Format="3">
<!-- BacktrackGlyphCount=1 -->
<BacktrackCoverage index="0">
<Glyph value="space"/>
<Glyph value="semicolon"/>
<Glyph value="comma"/>
</BacktrackCoverage>
<!-- InputGlyphCount=1 -->
<InputCoverage index="0">
<Glyph value="e"/>
</InputCoverage>
<!-- LookAheadGlyphCount=0 -->
<!-- SubstCount=0 -->
</ChainContextSubst>
</Lookup>
</LookupList>
</GSUB>
</ttFont>

69
Tests/feaLib/data/ZeroValue_ChainSinglePos_horizontal.ttx
View File

@ -32,44 +32,39 @@
<Lookup index="0">
<LookupType value="8"/>
<LookupFlag value="0"/>
<!-- SubTableCount=2 -->
<ChainContextPos index="0" Format="3">
<!-- BacktrackGlyphCount=1 -->
<BacktrackCoverage index="0">
<Glyph value="A"/>
</BacktrackCoverage>
<!-- InputGlyphCount=1 -->
<InputCoverage index="0">
<!-- SubTableCount=1 -->
<ChainContextPos index="0" Format="1">
<Coverage>
<Glyph value="G"/>
</InputCoverage>
<!-- LookAheadGlyphCount=1 -->
<LookAheadCoverage index="0">
<Glyph value="A"/>
</LookAheadCoverage>
<!-- PosCount=1 -->
<PosLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="1"/>
</PosLookupRecord>
</ChainContextPos>
<ChainContextPos index="1" Format="3">
<!-- BacktrackGlyphCount=1 -->
<BacktrackCoverage index="0">
<Glyph value="B"/>
</BacktrackCoverage>
<!-- InputGlyphCount=1 -->
<InputCoverage index="0">
<Glyph value="G"/>
</InputCoverage>
<!-- LookAheadGlyphCount=1 -->
<LookAheadCoverage index="0">
<Glyph value="B"/>
</LookAheadCoverage>
<!-- PosCount=1 -->
<PosLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="1"/>
</PosLookupRecord>
</Coverage>
<!-- ChainPosRuleSetCount=1 -->
<ChainPosRuleSet index="0">
<!-- ChainPosRuleCount=2 -->
<ChainPosRule index="0">
<!-- BacktrackGlyphCount=1 -->
<Backtrack index="0" value="A"/>
<!-- InputGlyphCount=1 -->
<!-- LookAheadGlyphCount=1 -->
<LookAhead index="0" value="A"/>
<!-- PosCount=1 -->
<PosLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="1"/>
</PosLookupRecord>
</ChainPosRule>
<ChainPosRule index="1">
<!-- BacktrackGlyphCount=1 -->
<Backtrack index="0" value="B"/>
<!-- InputGlyphCount=1 -->
<!-- LookAheadGlyphCount=1 -->
<LookAhead index="0" value="B"/>
<!-- PosCount=1 -->
<PosLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="1"/>
</PosLookupRecord>
</ChainPosRule>
</ChainPosRuleSet>
</ChainContextPos>
</Lookup>
<Lookup index="1">

69
Tests/feaLib/data/ZeroValue_ChainSinglePos_vertical.ttx
View File

@ -32,44 +32,39 @@
<Lookup index="0">
<LookupType value="8"/>
<LookupFlag value="0"/>
<!-- SubTableCount=2 -->
<ChainContextPos index="0" Format="3">
<!-- BacktrackGlyphCount=1 -->
<BacktrackCoverage index="0">
<Glyph value="A"/>
</BacktrackCoverage>
<!-- InputGlyphCount=1 -->
<InputCoverage index="0">
<!-- SubTableCount=1 -->
<ChainContextPos index="0" Format="1">
<Coverage>
<Glyph value="G"/>
</InputCoverage>
<!-- LookAheadGlyphCount=1 -->
<LookAheadCoverage index="0">
<Glyph value="A"/>
</LookAheadCoverage>
<!-- PosCount=1 -->
<PosLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="1"/>
</PosLookupRecord>
</ChainContextPos>
<ChainContextPos index="1" Format="3">
<!-- BacktrackGlyphCount=1 -->
<BacktrackCoverage index="0">
<Glyph value="B"/>
</BacktrackCoverage>
<!-- InputGlyphCount=1 -->
<InputCoverage index="0">
<Glyph value="G"/>
</InputCoverage>
<!-- LookAheadGlyphCount=1 -->
<LookAheadCoverage index="0">
<Glyph value="B"/>
</LookAheadCoverage>
<!-- PosCount=1 -->
<PosLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="1"/>
</PosLookupRecord>
</Coverage>
<!-- ChainPosRuleSetCount=1 -->
<ChainPosRuleSet index="0">
<!-- ChainPosRuleCount=2 -->
<ChainPosRule index="0">
<!-- BacktrackGlyphCount=1 -->
<Backtrack index="0" value="A"/>
<!-- InputGlyphCount=1 -->
<!-- LookAheadGlyphCount=1 -->
<LookAhead index="0" value="A"/>
<!-- PosCount=1 -->
<PosLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="1"/>
</PosLookupRecord>
</ChainPosRule>
<ChainPosRule index="1">
<!-- BacktrackGlyphCount=1 -->
<Backtrack index="0" value="B"/>
<!-- InputGlyphCount=1 -->
<!-- LookAheadGlyphCount=1 -->
<LookAhead index="0" value="B"/>
<!-- PosCount=1 -->
<PosLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="1"/>
</PosLookupRecord>
</ChainPosRule>
</ChainPosRuleSet>
</ChainContextPos>
</Lookup>
<Lookup index="1">

83
Tests/feaLib/data/bug512.ttx
View File

@ -32,50 +32,51 @@
<Lookup index="0">
<LookupType value="5"/>
<LookupFlag value="0"/>
<!-- SubTableCount=4 -->
<ContextSubst index="0" Format="3">
<!-- GlyphCount=1 -->
<!-- SubstCount=1 -->
<Coverage index="0">
<!-- SubTableCount=1 -->
<ContextSubst index="0" Format="1">
<Coverage>
<Glyph value="G"/>
</Coverage>
<SubstLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="1"/>
</SubstLookupRecord>
</ContextSubst>
<ContextSubst index="1" Format="3">
<!-- GlyphCount=1 -->
<!-- SubstCount=1 -->
<Coverage index="0">
<Glyph value="H"/>
</Coverage>
<SubstLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="1"/>
</SubstLookupRecord>
</ContextSubst>
<ContextSubst index="2" Format="3">
<!-- GlyphCount=1 -->
<!-- SubstCount=1 -->
<Coverage index="0">
<Glyph value="G"/>
</Coverage>
<SubstLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="2"/>
</SubstLookupRecord>
</ContextSubst>
<ContextSubst index="3" Format="3">
<!-- GlyphCount=1 -->
<!-- SubstCount=1 -->
<Coverage index="0">
<Glyph value="H"/>
</Coverage>
<SubstLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="2"/>
</SubstLookupRecord>
<!-- SubRuleSetCount=2 -->
<SubRuleSet index="0">
<!-- SubRuleCount=2 -->
<SubRule index="0">
<!-- GlyphCount=1 -->
<!-- SubstCount=1 -->
<SubstLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="1"/>
</SubstLookupRecord>
</SubRule>
<SubRule index="1">
<!-- GlyphCount=1 -->
<!-- SubstCount=1 -->
<SubstLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="2"/>
</SubstLookupRecord>
</SubRule>
</SubRuleSet>
<SubRuleSet index="1">
<!-- SubRuleCount=2 -->
<SubRule index="0">
<!-- GlyphCount=1 -->
<!-- SubstCount=1 -->
<SubstLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="1"/>
</SubstLookupRecord>
</SubRule>
<SubRule index="1">
<!-- GlyphCount=1 -->
<!-- SubstCount=1 -->
<SubstLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="2"/>
</SubstLookupRecord>
</SubRule>
</SubRuleSet>
</ContextSubst>
</Lookup>
<Lookup index="1">

212
Tests/feaLib/data/spec5f_ii_3.ttx
View File

@ -32,111 +32,115 @@
<Lookup index="0">
<LookupType value="6"/>
<LookupFlag value="0"/>
<!-- SubTableCount=3 -->
<ChainContextSubst index="0" Format="3">
<!-- BacktrackGlyphCount=1 -->
<BacktrackCoverage index="0">
<!-- SubTableCount=1 -->
<ChainContextSubst index="0" Format="2">
<Coverage>
<Glyph value="a"/>
<Glyph value="b"/>
<Glyph value="c"/>
<Glyph value="d"/>
<Glyph value="e"/>
<Glyph value="f"/>
<Glyph value="g"/>
<Glyph value="h"/>
<Glyph value="i"/>
<Glyph value="j"/>
<Glyph value="k"/>
<Glyph value="l"/>
<Glyph value="m"/>
<Glyph value="n"/>
<Glyph value="o"/>
<Glyph value="p"/>
<Glyph value="q"/>
<Glyph value="r"/>
<Glyph value="s"/>
<Glyph value="t"/>
<Glyph value="u"/>
<Glyph value="v"/>
<Glyph value="w"/>
<Glyph value="x"/>
<Glyph value="y"/>
<Glyph value="z"/>
</BacktrackCoverage>
<!-- InputGlyphCount=3 -->
<InputCoverage index="0">
<Glyph value="a"/>
</InputCoverage>
<InputCoverage index="1">
<Glyph value="n"/>
</InputCoverage>
<InputCoverage index="2">
<Glyph value="d"/>
</InputCoverage>
<!-- LookAheadGlyphCount=0 -->
<!-- SubstCount=0 -->
</ChainContextSubst>
<ChainContextSubst index="1" Format="3">
<!-- BacktrackGlyphCount=0 -->
<!-- InputGlyphCount=3 -->
<InputCoverage index="0">
<Glyph value="a"/>
</InputCoverage>
<InputCoverage index="1">
<Glyph value="n"/>
</InputCoverage>
<InputCoverage index="2">
<Glyph value="d"/>
</InputCoverage>
<!-- LookAheadGlyphCount=1 -->
<LookAheadCoverage index="0">
<Glyph value="a"/>
<Glyph value="b"/>
<Glyph value="c"/>
<Glyph value="d"/>
<Glyph value="e"/>
<Glyph value="f"/>
<Glyph value="g"/>
<Glyph value="h"/>
<Glyph value="i"/>
<Glyph value="j"/>
<Glyph value="k"/>
<Glyph value="l"/>
<Glyph value="m"/>
<Glyph value="n"/>
<Glyph value="o"/>
<Glyph value="p"/>
<Glyph value="q"/>
<Glyph value="r"/>
<Glyph value="s"/>
<Glyph value="t"/>
<Glyph value="u"/>
<Glyph value="v"/>
<Glyph value="w"/>
<Glyph value="x"/>
<Glyph value="y"/>
<Glyph value="z"/>
</LookAheadCoverage>
<!-- SubstCount=0 -->
</ChainContextSubst>
<ChainContextSubst index="2" Format="3">
<!-- BacktrackGlyphCount=0 -->
<!-- InputGlyphCount=3 -->
<InputCoverage index="0">
<Glyph value="a"/>
</InputCoverage>
<InputCoverage index="1">
<Glyph value="n"/>
</InputCoverage>
<InputCoverage index="2">
<Glyph value="d"/>
</InputCoverage>
<!-- LookAheadGlyphCount=0 -->
<!-- SubstCount=1 -->
<SubstLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="1"/>
</SubstLookupRecord>
</Coverage>
<BacktrackClassDef>
<ClassDef glyph="a" class="1"/>
<ClassDef glyph="b" class="1"/>
<ClassDef glyph="c" class="1"/>
<ClassDef glyph="d" class="1"/>
<ClassDef glyph="e" class="1"/>
<ClassDef glyph="f" class="1"/>
<ClassDef glyph="g" class="1"/>
<ClassDef glyph="h" class="1"/>
<ClassDef glyph="i" class="1"/>
<ClassDef glyph="j" class="1"/>
<ClassDef glyph="k" class="1"/>
<ClassDef glyph="l" class="1"/>
<ClassDef glyph="m" class="1"/>
<ClassDef glyph="n" class="1"/>
<ClassDef glyph="o" class="1"/>
<ClassDef glyph="p" class="1"/>
<ClassDef glyph="q" class="1"/>
<ClassDef glyph="r" class="1"/>
<ClassDef glyph="s" class="1"/>
<ClassDef glyph="t" class="1"/>
<ClassDef glyph="u" class="1"/>
<ClassDef glyph="v" class="1"/>
<ClassDef glyph="w" class="1"/>
<ClassDef glyph="x" class="1"/>
<ClassDef glyph="y" class="1"/>
<ClassDef glyph="z" class="1"/>
</BacktrackClassDef>
<InputClassDef>
<ClassDef glyph="a" class="3"/>
<ClassDef glyph="d" class="2"/>
<ClassDef glyph="n" class="1"/>
</InputClassDef>
<LookAheadClassDef>
<ClassDef glyph="a" class="1"/>
<ClassDef glyph="b" class="1"/>
<ClassDef glyph="c" class="1"/>
<ClassDef glyph="d" class="1"/>
<ClassDef glyph="e" class="1"/>
<ClassDef glyph="f" class="1"/>
<ClassDef glyph="g" class="1"/>
<ClassDef glyph="h" class="1"/>
<ClassDef glyph="i" class="1"/>
<ClassDef glyph="j" class="1"/>
<ClassDef glyph="k" class="1"/>
<ClassDef glyph="l" class="1"/>
<ClassDef glyph="m" class="1"/>
<ClassDef glyph="n" class="1"/>
<ClassDef glyph="o" class="1"/>
<ClassDef glyph="p" class="1"/>
<ClassDef glyph="q" class="1"/>
<ClassDef glyph="r" class="1"/>
<ClassDef glyph="s" class="1"/>
<ClassDef glyph="t" class="1"/>
<ClassDef glyph="u" class="1"/>
<ClassDef glyph="v" class="1"/>
<ClassDef glyph="w" class="1"/>
<ClassDef glyph="x" class="1"/>
<ClassDef glyph="y" class="1"/>
<ClassDef glyph="z" class="1"/>
</LookAheadClassDef>
<!-- ChainSubClassSetCount=4 -->
<ChainSubClassSet index="0">
<!-- ChainSubClassRuleCount=0 -->
</ChainSubClassSet>
<ChainSubClassSet index="1">
<!-- ChainSubClassRuleCount=0 -->
</ChainSubClassSet>
<ChainSubClassSet index="2">
<!-- ChainSubClassRuleCount=0 -->
</ChainSubClassSet>
<ChainSubClassSet index="3">
<!-- ChainSubClassRuleCount=3 -->
<ChainSubClassRule index="0">
<!-- BacktrackGlyphCount=1 -->
<Backtrack index="0" value="1"/>
<!-- InputGlyphCount=3 -->
<Input index="0" value="1"/>
<Input index="1" value="2"/>
<!-- LookAheadGlyphCount=0 -->
<!-- SubstCount=0 -->
</ChainSubClassRule>
<ChainSubClassRule index="1">
<!-- BacktrackGlyphCount=0 -->
<!-- InputGlyphCount=3 -->
<Input index="0" value="1"/>
<Input index="1" value="2"/>
<!-- LookAheadGlyphCount=1 -->
<LookAhead index="0" value="1"/>
<!-- SubstCount=0 -->
</ChainSubClassRule>
<ChainSubClassRule index="2">
<!-- BacktrackGlyphCount=0 -->
<!-- InputGlyphCount=3 -->
<Input index="0" value="1"/>
<Input index="1" value="2"/>
<!-- LookAheadGlyphCount=0 -->
<!-- SubstCount=1 -->
<SubstLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="1"/>
</SubstLookupRecord>
</ChainSubClassRule>
</ChainSubClassSet>
</ChainContextSubst>
</Lookup>
<Lookup index="1">

38
Tests/varLib/data/test_results/InterpolateLayoutGPOS_7_diff.ttx
View File

@ -86,26 +86,28 @@
<LookupType value="7"/>
<LookupFlag value="0"/>
<!-- SubTableCount=1 -->
<ContextPos index="0" Format="3">
<!-- GlyphCount=3 -->
<!-- PosCount=2 -->
<Coverage index="0" Format="1">
<ContextPos index="0" Format="1">
<Coverage Format="1">
<Glyph value="A"/>
</Coverage>
<Coverage index="1" Format="1">
<Glyph value="a"/>
</Coverage>
<Coverage index="2" Format="1">
<Glyph value="uni0303"/>
</Coverage>
<PosLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="0"/>
</PosLookupRecord>
<PosLookupRecord index="1">
<SequenceIndex value="2"/>
<LookupListIndex value="1"/>
</PosLookupRecord>
<!-- PosRuleSetCount=1 -->
<PosRuleSet index="0">
<!-- PosRuleCount=1 -->
<PosRule index="0">
<!-- GlyphCount=3 -->
<!-- PosCount=2 -->
<Input index="0" value="a"/>
<Input index="1" value="uni0303"/>
<PosLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="0"/>
</PosLookupRecord>
<PosLookupRecord index="1">
<SequenceIndex value="2"/>
<LookupListIndex value="1"/>
</PosLookupRecord>
</PosRule>
</PosRuleSet>
</ContextPos>
</Lookup>
</LookupList>

38
Tests/varLib/data/test_results/InterpolateLayoutGPOS_7_same.ttx
View File

@ -86,26 +86,28 @@
<LookupType value="7"/>
<LookupFlag value="0"/>
<!-- SubTableCount=1 -->
<ContextPos index="0" Format="3">
<!-- GlyphCount=3 -->
<!-- PosCount=2 -->
<Coverage index="0" Format="1">
<ContextPos index="0" Format="1">
<Coverage Format="1">
<Glyph value="A"/>
</Coverage>
<Coverage index="1" Format="1">
<Glyph value="a"/>
</Coverage>
<Coverage index="2" Format="1">
<Glyph value="uni0303"/>
</Coverage>
<PosLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="0"/>
</PosLookupRecord>
<PosLookupRecord index="1">
<SequenceIndex value="2"/>
<LookupListIndex value="1"/>
</PosLookupRecord>
<!-- PosRuleSetCount=1 -->
<PosRuleSet index="0">
<!-- PosRuleCount=1 -->
<PosRule index="0">
<!-- GlyphCount=3 -->
<!-- PosCount=2 -->
<Input index="0" value="a"/>
<Input index="1" value="uni0303"/>
<PosLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="0"/>
</PosLookupRecord>
<PosLookupRecord index="1">
<SequenceIndex value="2"/>
<LookupListIndex value="1"/>
</PosLookupRecord>
</PosRule>
</PosRuleSet>
</ContextPos>
</Lookup>
</LookupList>