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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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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.misc.fixedTools import fixedToFloat
from fontTools import ttLib from fontTools import ttLib
from fontTools.ttLib.tables import otTables as ot 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.ttLib.tables import otBase
from fontTools.otlLib.error import OpenTypeLibError from fontTools.otlLib.error import OpenTypeLibError
import logging import logging
import copy
log = logging.getLogger(__name__) log = logging.getLogger(__name__)
@ -330,6 +336,19 @@ class ChainContextualBuilder(LookupBuilder):
# Squish any empty subtables # Squish any empty subtables
return [x for x in ruleset if len(x.rules) > 0] 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): def build(self):
"""Build the lookup. """Build the lookup.
@ -342,12 +361,153 @@ class ChainContextualBuilder(LookupBuilder):
rulesets = self.rulesets() rulesets = self.rulesets()
chaining = any(ruleset.hasPrefixOrSuffix for ruleset in rulesets) chaining = any(ruleset.hasPrefixOrSuffix for ruleset in rulesets)
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: 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 # If we are not chaining, lookup type will be automatically fixed by
# buildLookup_ # buildLookup_
return self.buildLookup_(subtables) 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): def buildFormat3Subtable(self, rule, chaining=True):
st = self.newSubtable_(chaining=chaining) st = self.newSubtable_(chaining=chaining)
st.Format = 3 st.Format = 3
@ -357,7 +517,10 @@ class ChainContextualBuilder(LookupBuilder):
self.setInputCoverage_(rule.glyphs, st) self.setInputCoverage_(rule.glyphs, st)
else: else:
self.setCoverage_(rule.glyphs, st) self.setCoverage_(rule.glyphs, st)
self.buildLookupList(rule, st)
return st
def buildLookupList(self, rule, st):
for sequenceIndex, lookupList in enumerate(rule.lookups): for sequenceIndex, lookupList in enumerate(rule.lookups):
if lookupList is not None: if lookupList is not None:
if not isinstance(lookupList, list): if not isinstance(lookupList, list):
@ -377,7 +540,6 @@ class ChainContextualBuilder(LookupBuilder):
rec = self.newLookupRecord_(st) rec = self.newLookupRecord_(st)
rec.SequenceIndex = sequenceIndex rec.SequenceIndex = sequenceIndex
rec.LookupListIndex = l.lookup_index rec.LookupListIndex = l.lookup_index
return st
def add_subtable_break(self, location): def add_subtable_break(self, location):
self.rules.append( self.rules.append(
@ -398,6 +560,54 @@ class ChainContextualBuilder(LookupBuilder):
setattr(st, f"{self.subtable_type}LookupRecord", []) setattr(st, f"{self.subtable_type}LookupRecord", [])
return st 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_( def attachSubtableWithCount_(
self, st, subtable_name, count_name, existing=None, index=None, chaining=False self, st, subtable_name, count_name, existing=None, index=None, chaining=False
): ):

3
Tests/feaLib/builder_test.py
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@ -72,7 +72,8 @@ class BuilderTest(unittest.TestCase):
PairPosSubtable ChainSubstSubtable SubstSubtable ChainPosSubtable PairPosSubtable ChainSubstSubtable SubstSubtable ChainPosSubtable
LigatureSubtable AlternateSubtable MultipleSubstSubtable LigatureSubtable AlternateSubtable MultipleSubstSubtable
SingleSubstSubtable aalt_chain_contextual_subst AlternateChained SingleSubstSubtable aalt_chain_contextual_subst AlternateChained
MultipleLookupsPerGlyph MultipleLookupsPerGlyph2 MultipleLookupsPerGlyph MultipleLookupsPerGlyph2 GSUB_6_formats
GSUB_5_formats
""".split() """.split()
def __init__(self, methodName): def __init__(self, methodName):

36
Tests/feaLib/data/ChainPosSubtable.ttx
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@ -67,24 +67,26 @@
<LookupListIndex value="1"/> <LookupListIndex value="1"/>
</PosLookupRecord> </PosLookupRecord>
</ChainContextPos> </ChainContextPos>
<ChainContextPos index="1" Format="3"> <ChainContextPos index="1" Format="1">
<!-- BacktrackGlyphCount=1 --> <Coverage>
<BacktrackCoverage index="0">
<Glyph value="X"/>
</BacktrackCoverage>
<!-- InputGlyphCount=1 -->
<InputCoverage index="0">
<Glyph value="A"/> <Glyph value="A"/>
</InputCoverage> </Coverage>
<!-- LookAheadGlyphCount=1 --> <!-- ChainPosRuleSetCount=1 -->
<LookAheadCoverage index="0"> <ChainPosRuleSet index="0">
<Glyph value="Y"/> <!-- ChainPosRuleCount=1 -->
</LookAheadCoverage> <ChainPosRule index="0">
<!-- PosCount=1 --> <!-- BacktrackGlyphCount=1 -->
<PosLookupRecord index="0"> <Backtrack index="0" value="X"/>
<SequenceIndex value="0"/> <!-- InputGlyphCount=1 -->
<LookupListIndex value="2"/> <!-- LookAheadGlyphCount=1 -->
</PosLookupRecord> <LookAhead index="0" value="Y"/>
<!-- PosCount=1 -->
<PosLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="2"/>
</PosLookupRecord>
</ChainPosRule>
</ChainPosRuleSet>
</ChainContextPos> </ChainContextPos>
<ChainContextPos index="2" Format="3"> <ChainContextPos index="2" Format="3">
<!-- BacktrackGlyphCount=1 --> <!-- BacktrackGlyphCount=1 -->

68
Tests/feaLib/data/GPOS_8.ttx
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@ -34,42 +34,40 @@
<LookupType value="8"/> <LookupType value="8"/>
<LookupFlag value="0"/> <LookupFlag value="0"/>
<!-- SubTableCount=1 --> <!-- SubTableCount=1 -->
<ChainContextPos index="0" Format="3"> <ChainContextPos index="0" Format="1">
<!-- BacktrackGlyphCount=1 --> <Coverage>
<BacktrackCoverage index="0">
<Glyph value="A"/>
</BacktrackCoverage>
<!-- InputGlyphCount=4 -->
<InputCoverage index="0">
<Glyph value="one"/> <Glyph value="one"/>
</InputCoverage> </Coverage>
<InputCoverage index="1"> <!-- ChainPosRuleSetCount=1 -->
<Glyph value="two"/> <ChainPosRuleSet index="0">
</InputCoverage> <!-- ChainPosRuleCount=1 -->
<InputCoverage index="2"> <ChainPosRule index="0">
<Glyph value="one"/> <!-- BacktrackGlyphCount=1 -->
</InputCoverage> <Backtrack index="0" value="A"/>
<InputCoverage index="3"> <!-- InputGlyphCount=4 -->
<Glyph value="two"/> <Input index="0" value="two"/>
</InputCoverage> <Input index="1" value="one"/>
<!-- LookAheadGlyphCount=0 --> <Input index="2" value="two"/>
<!-- PosCount=4 --> <!-- LookAheadGlyphCount=0 -->
<PosLookupRecord index="0"> <!-- PosCount=4 -->
<SequenceIndex value="0"/> <PosLookupRecord index="0">
<LookupListIndex value="1"/> <SequenceIndex value="0"/>
</PosLookupRecord> <LookupListIndex value="1"/>
<PosLookupRecord index="1"> </PosLookupRecord>
<SequenceIndex value="1"/> <PosLookupRecord index="1">
<LookupListIndex value="1"/> <SequenceIndex value="1"/>
</PosLookupRecord> <LookupListIndex value="1"/>
<PosLookupRecord index="2"> </PosLookupRecord>
<SequenceIndex value="2"/> <PosLookupRecord index="2">
<LookupListIndex value="2"/> <SequenceIndex value="2"/>
</PosLookupRecord> <LookupListIndex value="2"/>
<PosLookupRecord index="3"> </PosLookupRecord>
<SequenceIndex value="3"/> <PosLookupRecord index="3">
<LookupListIndex value="2"/> <SequenceIndex value="3"/>
</PosLookupRecord> <LookupListIndex value="2"/>
</PosLookupRecord>
</ChainPosRule>
</ChainPosRuleSet>
</ChainContextPos> </ChainContextPos>
</Lookup> </Lookup>
<Lookup index="1"> <Lookup index="1">

20
Tests/feaLib/data/GSUB_5_formats.fea Normal file
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@ -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"/> <LookupType value="6"/>
<LookupFlag value="0"/> <LookupFlag value="0"/>
<!-- SubTableCount=1 --> <!-- SubTableCount=1 -->
<ChainContextSubst index="0" Format="3"> <ChainContextSubst index="0" Format="1">
<!-- BacktrackGlyphCount=3 --> <Coverage>
<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">
<Glyph value="c_t"/> <Glyph value="c_t"/>
</InputCoverage> </Coverage>
<!-- LookAheadGlyphCount=3 --> <!-- ChainSubRuleSetCount=1 -->
<LookAheadCoverage index="0"> <ChainSubRuleSet index="0">
<Glyph value="V"/> <!-- ChainSubRuleCount=1 -->
</LookAheadCoverage> <ChainSubRule index="0">
<LookAheadCoverage index="1"> <!-- BacktrackGlyphCount=3 -->
<Glyph value="W"/> <Backtrack index="0" value="E"/>
</LookAheadCoverage> <Backtrack index="1" value="D"/>
<LookAheadCoverage index="2"> <Backtrack index="2" value="A"/>
<Glyph value="X"/> <!-- InputGlyphCount=1 -->
</LookAheadCoverage> <!-- LookAheadGlyphCount=3 -->
<!-- SubstCount=1 --> <LookAhead index="0" value="V"/>
<SubstLookupRecord index="0"> <LookAhead index="1" value="W"/>
<SequenceIndex value="0"/> <LookAhead index="2" value="X"/>
<LookupListIndex value="2"/> <!-- SubstCount=1 -->
</SubstLookupRecord> <SubstLookupRecord index="0">
<SequenceIndex value="0"/>
<LookupListIndex value="2"/>
</SubstLookupRecord>
</ChainSubRule>
</ChainSubRuleSet>
</ChainContextSubst> </ChainContextSubst>
</Lookup> </Lookup>
</LookupList> </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
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@ -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"> <Lookup index="0">
<LookupType value="8"/> <LookupType value="8"/>
<LookupFlag value="0"/> <LookupFlag value="0"/>
<!-- SubTableCount=2 --> <!-- SubTableCount=1 -->
<ChainContextPos index="0" Format="3"> <ChainContextPos index="0" Format="1">
<!-- BacktrackGlyphCount=1 --> <Coverage>
<BacktrackCoverage index="0">
<Glyph value="A"/>
</BacktrackCoverage>
<!-- InputGlyphCount=1 -->
<InputCoverage index="0">
<Glyph value="G"/> <Glyph value="G"/>
</InputCoverage> </Coverage>
<!-- LookAheadGlyphCount=1 --> <!-- ChainPosRuleSetCount=1 -->
<LookAheadCoverage index="0"> <ChainPosRuleSet index="0">
<Glyph value="A"/> <!-- ChainPosRuleCount=2 -->
</LookAheadCoverage> <ChainPosRule index="0">
<!-- PosCount=1 --> <!-- BacktrackGlyphCount=1 -->
<PosLookupRecord index="0"> <Backtrack index="0" value="A"/>
<SequenceIndex value="0"/> <!-- InputGlyphCount=1 -->
<LookupListIndex value="1"/> <!-- LookAheadGlyphCount=1 -->
</PosLookupRecord> <LookAhead index="0" value="A"/>
</ChainContextPos> <!-- PosCount=1 -->
<ChainContextPos index="1" Format="3"> <PosLookupRecord index="0">
<!-- BacktrackGlyphCount=1 --> <SequenceIndex value="0"/>
<BacktrackCoverage index="0"> <LookupListIndex value="1"/>
<Glyph value="B"/> </PosLookupRecord>
</BacktrackCoverage> </ChainPosRule>
<!-- InputGlyphCount=1 --> <ChainPosRule index="1">
<InputCoverage index="0"> <!-- BacktrackGlyphCount=1 -->
<Glyph value="G"/> <Backtrack index="0" value="B"/>
</InputCoverage> <!-- InputGlyphCount=1 -->
<!-- LookAheadGlyphCount=1 --> <!-- LookAheadGlyphCount=1 -->
<LookAheadCoverage index="0"> <LookAhead index="0" value="B"/>
<Glyph value="B"/> <!-- PosCount=1 -->
</LookAheadCoverage> <PosLookupRecord index="0">
<!-- PosCount=1 --> <SequenceIndex value="0"/>
<PosLookupRecord index="0"> <LookupListIndex value="1"/>
<SequenceIndex value="0"/> </PosLookupRecord>
<LookupListIndex value="1"/> </ChainPosRule>
</PosLookupRecord> </ChainPosRuleSet>
</ChainContextPos> </ChainContextPos>
</Lookup> </Lookup>
<Lookup index="1"> <Lookup index="1">

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

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

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

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

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

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

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

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

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

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