File size: 2,167 Bytes
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"""
import re
try:
from _json import make_encoder as c_make_encoder
except ImportError:
c_make_encoder = None
import json
from json.encoder import INFINITY, encode_basestring, encode_basestring_ascii
class SrcField(str):
def __new__(cls, *args, **kwargs):
return super(SrcField, cls).__new__(cls, *args, **kwargs)
class SrcFieldJSONEncoder(json.JSONEncoder):
def iterencode(self, o, _one_shot=False):
if self.check_circular:
markers = {}
else:
markers = None
if self.ensure_ascii:
_encoder = encode_basestring_ascii
else:
_encoder = encode_basestring
def floatstr(o, allow_nan=self.allow_nan,
_repr=float.__repr__, _inf=INFINITY, _neginf=-INFINITY):
# Check for specials. Note that this type of test is processor
# and/or platform-specific, so do tests which don't depend on the
# internals.
if o != o:
text = 'NaN'
elif o == _inf:
text = 'Infinity'
elif o == _neginf:
text = '-Infinity'
else:
return _repr(o)
if not allow_nan:
raise ValueError(
"Out of range float values are not JSON compliant: " +
repr(o))
return text
def new_encoder(s) -> str:
if type(s) is SrcField:
return s
return _encoder(s)
if (_one_shot and c_make_encoder is not None
and self.indent is None):
_iterencode = c_make_encoder(
markers, self.default, new_encoder, self.indent,
self.key_separator, self.item_separator, self.sort_keys,
self.skipkeys, self.allow_nan)
else:
_iterencode = json.encoder._make_iterencode(
markers, self.default, new_encoder, self.indent, floatstr,
self.key_separator, self.item_separator, self.sort_keys,
self.skipkeys, _one_shot)
return _iterencode(o, 0)
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