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Use tableDict for DeltaValue lookbacks

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Was abusing the set/getCount machinery before.
This commit is contained in:
Behdad Esfahbod 2013-11-24 17:10:55 -05:00
parent 078b36325d
commit 2edc2da303
2 changed files with 7 additions and 10 deletions
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4
Lib/fontTools/ttLib/tables/otBase.py
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@ -574,7 +574,7 @@ class BaseTable(object):
else:
table[conv.name] = conv.read(reader, font, table)
if conv.isCount or conv.isSize:
if conv.isCount:
reader.setCount(conv.name, table[conv.name])
self.postRead(table, font)
@ -617,8 +617,6 @@ class BaseTable(object):
writer.writeCountReference(table, conv.name)
else:
conv.write(writer, font, table, value)
if conv.isSize:
writer.setCount(conv.name, value)
def readFormat(self, reader):
pass

13
Lib/fontTools/ttLib/tables/otConverters.py
View File

@ -46,7 +46,6 @@ class BaseConverter:
self.repeatOffset = repeatOffset
self.tableClass = tableClass
self.isCount = name.endswith("Count")
self.isSize = name.endswith("Size") or name=="DeltaFormat"
def read(self, reader, font, tableDict):
"""Read a value from the reader."""
@ -283,9 +282,9 @@ class ValueRecord(ValueFormat):
class DeltaValue(BaseConverter):
def read(self, reader, font, tableDict):
StartSize = reader.getCount("StartSize")
EndSize = reader.getCount("EndSize")
DeltaFormat = reader.getCount("DeltaFormat")
StartSize = tableDict["StartSize"]
EndSize = tableDict["EndSize"]
DeltaFormat = tableDict["DeltaFormat"]
assert DeltaFormat in (1, 2, 3), "illegal DeltaFormat"
nItems = EndSize - StartSize + 1
nBits = 1 << DeltaFormat
@ -306,9 +305,9 @@ class DeltaValue(BaseConverter):
return DeltaValue
def write(self, writer, font, tableDict, value, repeatIndex=None):
StartSize = writer.getCount("StartSize")
EndSize = writer.getCount("EndSize")
DeltaFormat = writer.getCount("DeltaFormat")
StartSize = tableDict["StartSize"]
EndSize = tableDict["EndSize"]
DeltaFormat = tableDict["DeltaFormat"]
DeltaValue = value
assert DeltaFormat in (1, 2, 3), "illegal DeltaFormat"
nItems = EndSize - StartSize + 1