Python scanner.make_scanner方法代码示例

# 需要导入模块: import scanner [as 别名]
# 或者: from scanner import make_scanner [as 别名]
def _toggle_speedups(enabled):
    import decoder as dec
    import encoder as enc
    import scanner as scan
    c_make_encoder = _import_c_make_encoder()
    if enabled:
        dec.scanstring = dec.c_scanstring or dec.py_scanstring
        enc.c_make_encoder = c_make_encoder
        enc.encode_basestring_ascii = (enc.c_encode_basestring_ascii or
            enc.py_encode_basestring_ascii)
        scan.make_scanner = scan.c_make_scanner or scan.py_make_scanner
    else:
        dec.scanstring = dec.py_scanstring
        enc.c_make_encoder = None
        enc.encode_basestring_ascii = enc.py_encode_basestring_ascii
        scan.make_scanner = scan.py_make_scanner
    dec.make_scanner = scan.make_scanner
    global _default_decoder
    _default_decoder = JSONDecoder(
        encoding=None,
        object_hook=None,
        object_pairs_hook=None,
    )
    global _default_encoder
    _default_encoder = JSONEncoder(
       skipkeys=False,
       ensure_ascii=True,
       check_circular=True,
       allow_nan=True,
       indent=None,
       separators=None,
       encoding='utf-8',
       default=None,
   ) 

# 需要导入模块: import scanner [as 别名]
# 或者: from scanner import make_scanner [as 别名]
def __init__(self, encoding=None, object_hook=None, parse_float=None,
            parse_int=None, parse_constant=None, strict=True,
            object_pairs_hook=None):
        """
        *encoding* determines the encoding used to interpret any
        :class:`str` objects decoded by this instance (``'utf-8'`` by
        default).  It has no effect when decoding :class:`unicode` objects.

        Note that currently only encodings that are a superset of ASCII work,
        strings of other encodings should be passed in as :class:`unicode`.

        *object_hook*, if specified, will be called with the result of every
        JSON object decoded and its return value will be used in place of the
        given :class:`dict`.  This can be used to provide custom
        deserializations (e.g. to support JSON-RPC class hinting).

        *object_pairs_hook* is an optional function that will be called with
        the result of any object literal decode with an ordered list of pairs.
        The return value of *object_pairs_hook* will be used instead of the
        :class:`dict`.  This feature can be used to implement custom decoders
        that rely on the order that the key and value pairs are decoded (for
        example, :func:`collections.OrderedDict` will remember the order of
        insertion). If *object_hook* is also defined, the *object_pairs_hook*
        takes priority.

        *parse_float*, if specified, will be called with the string of every
        JSON float to be decoded.  By default, this is equivalent to
        ``float(num_str)``. This can be used to use another datatype or parser
        for JSON floats (e.g. :class:`decimal.Decimal`).

        *parse_int*, if specified, will be called with the string of every
        JSON int to be decoded.  By default, this is equivalent to
        ``int(num_str)``.  This can be used to use another datatype or parser
        for JSON integers (e.g. :class:`float`).

        *parse_constant*, if specified, will be called with one of the
        following strings: ``'-Infinity'``, ``'Infinity'``, ``'NaN'``.  This
        can be used to raise an exception if invalid JSON numbers are
        encountered.

        *strict* controls the parser's behavior when it encounters an
        invalid control character in a string. The default setting of
        ``True`` means that unescaped control characters are parse errors, if
        ``False`` then control characters will be allowed in strings.

        """
        self.encoding = encoding
        self.object_hook = object_hook
        self.object_pairs_hook = object_pairs_hook
        self.parse_float = parse_float or float
        self.parse_int = parse_int or int
        self.parse_constant = parse_constant or _CONSTANTS.__getitem__
        self.strict = strict
        self.parse_object = JSONObject
        self.parse_array = JSONArray
        self.parse_string = scanstring
        self.memo = {}
        self.scan_once = make_scanner(self)