diff options
Diffstat (limited to 'sca-java-2.x/tags/2.0-Beta3/modules/implementation-python-runtime/src/main/resources/django/utils/simplejson/decoder.py')
-rw-r--r-- | sca-java-2.x/tags/2.0-Beta3/modules/implementation-python-runtime/src/main/resources/django/utils/simplejson/decoder.py | 273 |
1 files changed, 0 insertions, 273 deletions
diff --git a/sca-java-2.x/tags/2.0-Beta3/modules/implementation-python-runtime/src/main/resources/django/utils/simplejson/decoder.py b/sca-java-2.x/tags/2.0-Beta3/modules/implementation-python-runtime/src/main/resources/django/utils/simplejson/decoder.py deleted file mode 100644 index 66f68a200b..0000000000 --- a/sca-java-2.x/tags/2.0-Beta3/modules/implementation-python-runtime/src/main/resources/django/utils/simplejson/decoder.py +++ /dev/null @@ -1,273 +0,0 @@ -""" -Implementation of JSONDecoder -""" -import re - -from django.utils.simplejson.scanner import Scanner, pattern - -FLAGS = re.VERBOSE | re.MULTILINE | re.DOTALL - -def _floatconstants(): - import struct - import sys - _BYTES = '7FF80000000000007FF0000000000000'.decode('hex') - if sys.byteorder != 'big': - _BYTES = _BYTES[:8][::-1] + _BYTES[8:][::-1] - nan, inf = struct.unpack('dd', _BYTES) - return nan, inf, -inf - -NaN, PosInf, NegInf = _floatconstants() - -def linecol(doc, pos): - lineno = doc.count('\n', 0, pos) + 1 - if lineno == 1: - colno = pos - else: - colno = pos - doc.rindex('\n', 0, pos) - return lineno, colno - -def errmsg(msg, doc, pos, end=None): - lineno, colno = linecol(doc, pos) - if end is None: - return '%s: line %d column %d (char %d)' % (msg, lineno, colno, pos) - endlineno, endcolno = linecol(doc, end) - return '%s: line %d column %d - line %d column %d (char %d - %d)' % ( - msg, lineno, colno, endlineno, endcolno, pos, end) - -_CONSTANTS = { - '-Infinity': NegInf, - 'Infinity': PosInf, - 'NaN': NaN, - 'true': True, - 'false': False, - 'null': None, -} - -def JSONConstant(match, context, c=_CONSTANTS): - return c[match.group(0)], None -pattern('(-?Infinity|NaN|true|false|null)')(JSONConstant) - -def JSONNumber(match, context): - match = JSONNumber.regex.match(match.string, *match.span()) - integer, frac, exp = match.groups() - if frac or exp: - res = float(integer + (frac or '') + (exp or '')) - else: - res = int(integer) - return res, None -pattern(r'(-?(?:0|[1-9]\d*))(\.\d+)?([eE][-+]?\d+)?')(JSONNumber) - -STRINGCHUNK = re.compile(r'(.*?)(["\\])', FLAGS) -BACKSLASH = { - '"': u'"', '\\': u'\\', '/': u'/', - 'b': u'\b', 'f': u'\f', 'n': u'\n', 'r': u'\r', 't': u'\t', -} - -DEFAULT_ENCODING = "utf-8" - -def scanstring(s, end, encoding=None, _b=BACKSLASH, _m=STRINGCHUNK.match): - if encoding is None: - encoding = DEFAULT_ENCODING - chunks = [] - _append = chunks.append - begin = end - 1 - while 1: - chunk = _m(s, end) - if chunk is None: - raise ValueError( - errmsg("Unterminated string starting at", s, begin)) - end = chunk.end() - content, terminator = chunk.groups() - if content: - if not isinstance(content, unicode): - content = unicode(content, encoding) - _append(content) - if terminator == '"': - break - try: - esc = s[end] - except IndexError: - raise ValueError( - errmsg("Unterminated string starting at", s, begin)) - if esc != 'u': - try: - m = _b[esc] - except KeyError: - raise ValueError( - errmsg("Invalid \\escape: %r" % (esc,), s, end)) - end += 1 - else: - esc = s[end + 1:end + 5] - try: - m = unichr(int(esc, 16)) - if len(esc) != 4 or not esc.isalnum(): - raise ValueError - except ValueError: - raise ValueError(errmsg("Invalid \\uXXXX escape", s, end)) - end += 5 - _append(m) - return u''.join(chunks), end - -def JSONString(match, context): - encoding = getattr(context, 'encoding', None) - return scanstring(match.string, match.end(), encoding) -pattern(r'"')(JSONString) - -WHITESPACE = re.compile(r'\s*', FLAGS) - -def JSONObject(match, context, _w=WHITESPACE.match): - pairs = {} - s = match.string - end = _w(s, match.end()).end() - nextchar = s[end:end + 1] - # trivial empty object - if nextchar == '}': - return pairs, end + 1 - if nextchar != '"': - raise ValueError(errmsg("Expecting property name", s, end)) - end += 1 - encoding = getattr(context, 'encoding', None) - iterscan = JSONScanner.iterscan - while True: - key, end = scanstring(s, end, encoding) - end = _w(s, end).end() - if s[end:end + 1] != ':': - raise ValueError(errmsg("Expecting : delimiter", s, end)) - end = _w(s, end + 1).end() - try: - value, end = iterscan(s, idx=end, context=context).next() - except StopIteration: - raise ValueError(errmsg("Expecting object", s, end)) - pairs[key] = value - end = _w(s, end).end() - nextchar = s[end:end + 1] - end += 1 - if nextchar == '}': - break - if nextchar != ',': - raise ValueError(errmsg("Expecting , delimiter", s, end - 1)) - end = _w(s, end).end() - nextchar = s[end:end + 1] - end += 1 - if nextchar != '"': - raise ValueError(errmsg("Expecting property name", s, end - 1)) - object_hook = getattr(context, 'object_hook', None) - if object_hook is not None: - pairs = object_hook(pairs) - return pairs, end -pattern(r'{')(JSONObject) - -def JSONArray(match, context, _w=WHITESPACE.match): - values = [] - s = match.string - end = _w(s, match.end()).end() - # look-ahead for trivial empty array - nextchar = s[end:end + 1] - if nextchar == ']': - return values, end + 1 - iterscan = JSONScanner.iterscan - while True: - try: - value, end = iterscan(s, idx=end, context=context).next() - except StopIteration: - raise ValueError(errmsg("Expecting object", s, end)) - values.append(value) - end = _w(s, end).end() - nextchar = s[end:end + 1] - end += 1 - if nextchar == ']': - break - if nextchar != ',': - raise ValueError(errmsg("Expecting , delimiter", s, end)) - end = _w(s, end).end() - return values, end -pattern(r'\[')(JSONArray) - -ANYTHING = [ - JSONObject, - JSONArray, - JSONString, - JSONConstant, - JSONNumber, -] - -JSONScanner = Scanner(ANYTHING) - -class JSONDecoder(object): - """ - Simple JSON <http://json.org> decoder - - Performs the following translations in decoding: - - +---------------+-------------------+ - | JSON | Python | - +===============+===================+ - | object | dict | - +---------------+-------------------+ - | array | list | - +---------------+-------------------+ - | string | unicode | - +---------------+-------------------+ - | number (int) | int, long | - +---------------+-------------------+ - | number (real) | float | - +---------------+-------------------+ - | true | True | - +---------------+-------------------+ - | false | False | - +---------------+-------------------+ - | null | None | - +---------------+-------------------+ - - It also understands ``NaN``, ``Infinity``, and ``-Infinity`` as - their corresponding ``float`` values, which is outside the JSON spec. - """ - - _scanner = Scanner(ANYTHING) - __all__ = ['__init__', 'decode', 'raw_decode'] - - def __init__(self, encoding=None, object_hook=None): - """ - ``encoding`` determines the encoding used to interpret any ``str`` - objects decoded by this instance (utf-8 by default). It has no - effect when decoding ``unicode`` objects. - - Note that currently only encodings that are a superset of ASCII work, - strings of other encodings should be passed in as ``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 ``dict``. This can be used to provide custom - deserializations (e.g. to support JSON-RPC class hinting). - """ - self.encoding = encoding - self.object_hook = object_hook - - def decode(self, s, _w=WHITESPACE.match): - """ - Return the Python representation of ``s`` (a ``str`` or ``unicode`` - instance containing a JSON document) - """ - obj, end = self.raw_decode(s, idx=_w(s, 0).end()) - end = _w(s, end).end() - if end != len(s): - raise ValueError(errmsg("Extra data", s, end, len(s))) - return obj - - def raw_decode(self, s, **kw): - """ - Decode a JSON document from ``s`` (a ``str`` or ``unicode`` beginning - with a JSON document) and return a 2-tuple of the Python - representation and the index in ``s`` where the document ended. - - This can be used to decode a JSON document from a string that may - have extraneous data at the end. - """ - kw.setdefault('context', self) - try: - obj, end = self._scanner.iterscan(s, **kw).next() - except StopIteration: - raise ValueError("No JSON object could be decoded") - return obj, end - -__all__ = ['JSONDecoder'] |