def _build(self, obj, stream, context):
if not isinstance(obj, collections.Sequence):
raise RangeError("expected sequence type, found %s" % type(obj))
if len(obj) < self.mincount or len(obj) > self.maxcount:
raise RangeError("expected %d to %d, found %d" %
(self.mincount, self.maxcount, len(obj)))
cnt = 0
try:
if self.subcon.conflags & self.FLAG_COPY_CONTEXT:
for subobj in obj:
if isinstance(obj, bytes):
subobj = bchr(subobj)
self.subcon._build(subobj, stream, context.__copy__())
cnt += 1
else:
for subobj in obj:
if isinstance(obj, bytes):
subobj = bchr(subobj)
self.subcon._build(subobj, stream, context)
cnt += 1
except ConstructError:
if cnt < self.mincount:
raise RangeError(
"expected %d to %d, found %d" %
(self.mincount, self.maxcount, len(obj)),
sys.exc_info()[1])
def _build(self, obj, stream, context):
if len(obj) < self.mincount or len(obj) > self.maxcout:
raise RangeError("expected %d to %d, found %d" %
(self.mincount, self.maxcout, len(obj)))
cnt = 0
try:
if self.subcon.conflags & self.FLAG_COPY_CONTEXT:
for subobj in obj:
if isinstance(obj, bytes):
subobj = bchr(subobj)
self.subcon._build(subobj, stream, context.__copy__())
cnt += 1
else:
for subobj in obj:
if isinstance(obj, bytes):
subobj = bchr(subobj)
self.subcon._build(subobj, stream, context)
cnt += 1
except ConstructError:
if cnt < self.mincount:
raise RangeError("expected %d to %d, found %d" %
(self.mincount, self.maxcout, len(obj)), sys.exc_info()[1])
def _build(self, obj, stream, context):
if len(obj) < self.mincount or len(obj) > self.maxcout:
raise RangeError("expected %d to %d, found %d" %
(self.mincount, self.maxcout, len(obj)))
cnt = 0
try:
if self.subcon.conflags & self.FLAG_COPY_CONTEXT:
for subobj in obj:
if isinstance(obj, bytes):
subobj = bchr(subobj)
self.subcon._build(subobj, stream, context.__copy__())
cnt += 1
else:
for subobj in obj:
if isinstance(obj, bytes):
subobj = bchr(subobj)
self.subcon._build(subobj, stream, context)
cnt += 1
except ConstructError as ex:
if cnt < self.mincount:
raise RangeError("expected %d to %d, found %d" %
(self.mincount, self.maxcout, len(obj)), ex)
def _build(self, obj, stream, context):
self.start_quote._build(None, stream, context)
if self.encoding:
obj = obj.encode(self.encoding)
for ch in obj:
ch = bchr(ch)
if ch == self.esc_char:
self.char._build(self.esc_char, stream, context)
elif ch == self.end_quote:
if self.esc_char is None:
raise QuotedStringError("found ending quote in data, "
"but no escape char defined", ch)
else:
self.char._build(self.esc_char, stream, context)
self.char._build(ch, stream, context)
self.char._build(self.end_quote, stream, context)
def _build(self, obj, stream, context):
terminated = False
if self.subcon.conflags & self.FLAG_COPY_CONTEXT:
for subobj in obj:
self.subcon._build(subobj, stream, context.__copy__())
if self.predicate(subobj, context):
terminated = True
break
else:
for subobj in obj:
subobj = bchr(subobj)
self.subcon._build(subobj, stream, context.__copy__())
if self.predicate(subobj, context):
terminated = True
break
if not terminated:
raise ArrayError("missing terminator")
def _build(self, obj, stream, context):
_write_stream(stream, self.length, bchr(obj) if isinstance(obj, int) else obj)
def _build(self, obj, stream, context):
_write_stream(stream, self.length, bchr(obj) if isinstance(obj, int) else obj)
class IdentifierAdapter(Adapter):
"""
Adapter for programmatic identifiers
Parameters:
* subcon - the subcon to adapt
"""
def _encode(self, obj, context):
return obj[0], obj[1:]
def _decode(self, obj, context):
return obj[0] + b"".join(obj[1])
_default_identifier_headset = set()
for c in b"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_":
_default_identifier_headset.add(bchr(c))
_default_identifier_tailset = set()
for c in b"0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_":
_default_identifier_tailset.add(bchr(c))
def Identifier(name,
headset=_default_identifier_headset,
tailset=_default_identifier_tailset
):
"""a programmatic identifier (symbol). must start with a char of headset,
followed by a sequence of tailset characters
* name - the name of the field
* headset - charset for the first character. default is A-Z, a-z, and _
* tailset - charset for the tail. default is A-Z, a-z, 0-9 and _
