[Pywikipedia-svn] SVN: [7130] trunk/pywikipedia/simplejson

8 Aug 2009

Revision: 7130
Author:   alexsh
Date:     2009-08-08 00:42:34 +0000 (Sat, 08 Aug 2009)
Log Message:
-----------
Update simplejson to 2.0.9
Modified Paths:
--------------
    trunk/pywikipedia/simplejson/__init__.py
    trunk/pywikipedia/simplejson/_speedups.c
    trunk/pywikipedia/simplejson/decoder.py
    trunk/pywikipedia/simplejson/encoder.py
    trunk/pywikipedia/simplejson/scanner.py
Added Paths:
-----------
    trunk/pywikipedia/simplejson/tool.py
Modified: trunk/pywikipedia/simplejson/__init__.py
===================================================================

--- trunk/pywikipedia/simplejson/__init__.py	2009-08-07 17:25:10 UTC (rev 7129)
+++ trunk/pywikipedia/simplejson/__init__.py	2009-08-08 00:42:34 UTC (rev 7130)
@@ -1,97 +1,110 @@
-r"""
-A simple, fast, extensible JSON encoder and decoder
-
-JSON (JavaScript Object Notation) http://json.org is a subset of
+r"""JSON (JavaScript Object Notation) http://json.org is a subset of
 JavaScript syntax (ECMA-262 3rd edition) used as a lightweight data
 interchange format.
-simplejson exposes an API familiar to uses of the standard library
-marshal and pickle modules.
+:mod:`simplejson` exposes an API familiar to users of the standard library
+:mod:`marshal` and :mod:`pickle` modules. It is the externally maintained
+version of the :mod:`json` library contained in Python 2.6, but maintains
+compatibility with Python 2.4 and Python 2.5 and (currently) has
+significant performance advantages, even without using the optional C
+extension for speedups.
Encoding basic Python object hierarchies::
-    
-    >>> import simplejson
-    >>> simplejson.dumps(['foo', {'bar': ('baz', None, 1.0, 2)}])
+
+    >>> import simplejson as json
+    >>> json.dumps(['foo', {'bar': ('baz', None, 1.0, 2)}])
     '["foo", {"bar": ["baz", null, 1.0, 2]}]'
-    >>> print simplejson.dumps(""foo\bar")
+    >>> print json.dumps(""foo\bar")
     ""foo\bar"
-    >>> print simplejson.dumps(u'\u1234')
+    >>> print json.dumps(u'\u1234')
     "\u1234"
-    >>> print simplejson.dumps('\')
+    >>> print json.dumps('\')
     "\"
-    >>> print simplejson.dumps({"c": 0, "b": 0, "a": 0}, sort_keys=True)
+    >>> print json.dumps({"c": 0, "b": 0, "a": 0}, sort_keys=True)
     {"a": 0, "b": 0, "c": 0}
     >>> from StringIO import StringIO
     >>> io = StringIO()
-    >>> simplejson.dump(['streaming API'], io)
+    >>> json.dump(['streaming API'], io)
     >>> io.getvalue()
     '["streaming API"]'
Compact encoding::
-    >>> import simplejson
-    >>> simplejson.dumps([1,2,3,{'4': 5, '6': 7}], separators=(',',':'))
+    >>> import simplejson as json
+    >>> json.dumps([1,2,3,{'4': 5, '6': 7}], separators=(',',':'))
     '[1,2,3,{"4":5,"6":7}]'
Pretty printing::
-    >>> import simplejson
-    >>> print simplejson.dumps({'4': 5, '6': 7}, sort_keys=True, indent=4)
+    >>> import simplejson as json
+    >>> s = json.dumps({'4': 5, '6': 7}, sort_keys=True, indent=4)
+    >>> print '\n'.join([l.rstrip() for l in  s.splitlines()])
     {
-        "4": 5, 
+        "4": 5,
         "6": 7
     }
Decoding JSON::
-    
-    >>> import simplejson
-    >>> simplejson.loads('["foo", {"bar":["baz", null, 1.0, 2]}]')
-    [u'foo', {u'bar': [u'baz', None, 1.0, 2]}]
-    >>> simplejson.loads('"\"foo\bar"')
-    u'"foo\x08ar'
+
+    >>> import simplejson as json
+    >>> obj = [u'foo', {u'bar': [u'baz', None, 1.0, 2]}]
+    >>> json.loads('["foo", {"bar":["baz", null, 1.0, 2]}]') == obj
+    True
+    >>> json.loads('"\"foo\bar"') == u'"foo\x08ar'
+    True
     >>> from StringIO import StringIO
     >>> io = StringIO('["streaming API"]')
-    >>> simplejson.load(io)
-    [u'streaming API']
+    >>> json.load(io)[0] == 'streaming API'
+    True
Specializing JSON object decoding::
-    >>> import simplejson
+    >>> import simplejson as json
     >>> def as_complex(dct):
     ...     if '__complex__' in dct:
     ...         return complex(dct['real'], dct['imag'])
     ...     return dct
-    ... 
-    >>> simplejson.loads('{"__complex__": true, "real": 1, "imag": 2}',
+    ...
+    >>> json.loads('{"__complex__": true, "real": 1, "imag": 2}',
     ...     object_hook=as_complex)
     (1+2j)
+    >>> import decimal
+    >>> json.loads('1.1', parse_float=decimal.Decimal) == decimal.Decimal('1.1')
+    True
-Extending JSONEncoder::
-    
-    >>> import simplejson
-    >>> class ComplexEncoder(simplejson.JSONEncoder):
-    ...     def default(self, obj):
-    ...         if isinstance(obj, complex):
-    ...             return [obj.real, obj.imag]
-    ...         return simplejson.JSONEncoder.default(self, obj)
-    ... 
-    >>> dumps(2 + 1j, cls=ComplexEncoder)
+Specializing JSON object encoding::
+
+    >>> import simplejson as json
+    >>> def encode_complex(obj):
+    ...     if isinstance(obj, complex):
+    ...         return [obj.real, obj.imag]
+    ...     raise TypeError(repr(o) + " is not JSON serializable")
+    ...
+    >>> json.dumps(2 + 1j, default=encode_complex)
     '[2.0, 1.0]'
-    >>> ComplexEncoder().encode(2 + 1j)
+    >>> json.JSONEncoder(default=encode_complex).encode(2 + 1j)
     '[2.0, 1.0]'
-    >>> list(ComplexEncoder().iterencode(2 + 1j))
-    ['[', '2.0', ', ', '1.0', ']']
-    
+    >>> ''.join(json.JSONEncoder(default=encode_complex).iterencode(2 + 1j))
+    '[2.0, 1.0]'
-Note that the JSON produced by this module's default settings
-is a subset of YAML, so it may be used as a serializer for that as well.
+
+Using simplejson.tool from the shell to validate and pretty-print::
+
+    $ echo '{"json":"obj"}' | python -m simplejson.tool
+    {
+        "json": "obj"
+    }
+    $ echo '{ 1.2:3.4}' | python -m simplejson.tool
+    Expecting property name: line 1 column 2 (char 2)
 """
-__version__ = '1.7.3'
+__version__ = '2.0.9'
 __all__ = [
     'dump', 'dumps', 'load', 'loads',
     'JSONDecoder', 'JSONEncoder',
 ]
+__author__ = 'Bob Ippolito bob@redivi.com'
+
 from decoder import JSONDecoder
 from encoder import JSONEncoder
@@ -102,31 +115,31 @@
     allow_nan=True,
     indent=None,
     separators=None,
-    encoding='utf-8'
+    encoding='utf-8',
+    default=None,
 )
def dump(obj, fp, skipkeys=False, ensure_ascii=True, check_circular=True,
         allow_nan=True, cls=None, indent=None, separators=None,
-        encoding='utf-8', **kw):
-    """
-    Serialize ``obj`` as a JSON formatted stream to ``fp`` (a
+        encoding='utf-8', default=None, **kw):
+    """Serialize ``obj`` as a JSON formatted stream to ``fp`` (a
     ``.write()``-supporting file-like object).
-    If ``skipkeys`` is ``True`` then ``dict`` keys that are not basic types
-    (``str``, ``unicode``, ``int``, ``long``, ``float``, ``bool``, ``None``) 
+    If ``skipkeys`` is true then ``dict`` keys that are not basic types
+    (``str``, ``unicode``, ``int``, ``long``, ``float``, ``bool``, ``None``)
     will be skipped instead of raising a ``TypeError``.
-    If ``ensure_ascii`` is ``False``, then the some chunks written to ``fp``
+    If ``ensure_ascii`` is false, then the some chunks written to ``fp``
     may be ``unicode`` instances, subject to normal Python ``str`` to
     ``unicode`` coercion rules. Unless ``fp.write()`` explicitly
     understands ``unicode`` (as in ``codecs.getwriter()``) this is likely
     to cause an error.
-    If ``check_circular`` is ``False``, then the circular reference check
+    If ``check_circular`` is false, then the circular reference check
     for container types will be skipped and a circular reference will
     result in an ``OverflowError`` (or worse).
-    If ``allow_nan`` is ``False``, then it will be a ``ValueError`` to
+    If ``allow_nan`` is false, then it will be a ``ValueError`` to
     serialize out of range ``float`` values (``nan``, ``inf``, ``-inf``)
     in strict compliance of the JSON specification, instead of using the
     JavaScript equivalents (``NaN``, ``Infinity``, ``-Infinity``).
@@ -141,22 +154,27 @@
``encoding`` is the character encoding for str instances, default is UTF-8.
+    ``default(obj)`` is a function that should return a serializable version
+    of obj or raise TypeError. The default simply raises TypeError.
+
     To use a custom ``JSONEncoder`` subclass (e.g. one that overrides the
     ``.default()`` method to serialize additional types), specify it with
     the ``cls`` kwarg.
+
     """
     # cached encoder
-    if (skipkeys is False and ensure_ascii is True and
-        check_circular is True and allow_nan is True and
+    if (not skipkeys and ensure_ascii and
+        check_circular and allow_nan and
         cls is None and indent is None and separators is None and
-        encoding == 'utf-8' and not kw):
+        encoding == 'utf-8' and default is None and not kw):
         iterable = _default_encoder.iterencode(obj)
     else:
         if cls is None:
             cls = JSONEncoder
         iterable = cls(skipkeys=skipkeys, ensure_ascii=ensure_ascii,
             check_circular=check_circular, allow_nan=allow_nan, indent=indent,
-            separators=separators, encoding=encoding, **kw).iterencode(obj)
+            separators=separators, encoding=encoding,
+            default=default, **kw).iterencode(obj)
     # could accelerate with writelines in some versions of Python, at
     # a debuggability cost
     for chunk in iterable:
@@ -165,23 +183,22 @@
def dumps(obj, skipkeys=False, ensure_ascii=True, check_circular=True,
         allow_nan=True, cls=None, indent=None, separators=None,
-        encoding='utf-8', **kw):
-    """
-    Serialize ``obj`` to a JSON formatted ``str``.
+        encoding='utf-8', default=None, **kw):
+    """Serialize ``obj`` to a JSON formatted ``str``.
-    If ``skipkeys`` is ``True`` then ``dict`` keys that are not basic types
-    (``str``, ``unicode``, ``int``, ``long``, ``float``, ``bool``, ``None``) 
+    If ``skipkeys`` is false then ``dict`` keys that are not basic types
+    (``str``, ``unicode``, ``int``, ``long``, ``float``, ``bool``, ``None``)
     will be skipped instead of raising a ``TypeError``.
-    If ``ensure_ascii`` is ``False``, then the return value will be a
+    If ``ensure_ascii`` is false, then the return value will be a
     ``unicode`` instance subject to normal Python ``str`` to ``unicode``
     coercion rules instead of being escaped to an ASCII ``str``.
-    If ``check_circular`` is ``False``, then the circular reference check
+    If ``check_circular`` is false, then the circular reference check
     for container types will be skipped and a circular reference will
     result in an ``OverflowError`` (or worse).
-    If ``allow_nan`` is ``False``, then it will be a ``ValueError`` to
+    If ``allow_nan`` is false, then it will be a ``ValueError`` to
     serialize out of range ``float`` values (``nan``, ``inf``, ``-inf``) in
     strict compliance of the JSON specification, instead of using the
     JavaScript equivalents (``NaN``, ``Infinity``, ``-Infinity``).
@@ -197,29 +214,35 @@
``encoding`` is the character encoding for str instances, default is UTF-8.
+    ``default(obj)`` is a function that should return a serializable version
+    of obj or raise TypeError. The default simply raises TypeError.
+
     To use a custom ``JSONEncoder`` subclass (e.g. one that overrides the
     ``.default()`` method to serialize additional types), specify it with
     the ``cls`` kwarg.
+
     """
     # cached encoder
-    if (skipkeys is False and ensure_ascii is True and
-        check_circular is True and allow_nan is True and
+    if (not skipkeys and ensure_ascii and
+        check_circular and allow_nan and
         cls is None and indent is None and separators is None and
-        encoding == 'utf-8' and not kw):
+        encoding == 'utf-8' and default is None and not kw):
         return _default_encoder.encode(obj)
     if cls is None:
         cls = JSONEncoder
     return cls(
         skipkeys=skipkeys, ensure_ascii=ensure_ascii,
         check_circular=check_circular, allow_nan=allow_nan, indent=indent,
-        separators=separators, encoding=encoding,
+        separators=separators, encoding=encoding, default=default,
         **kw).encode(obj)
+
 _default_decoder = JSONDecoder(encoding=None, object_hook=None)
-def load(fp, encoding=None, cls=None, object_hook=None, **kw):
-    """
-    Deserialize ``fp`` (a ``.read()``-supporting file-like object containing
+
+def load(fp, encoding=None, cls=None, object_hook=None, parse_float=None,
+        parse_int=None, parse_constant=None, **kw):
+    """Deserialize ``fp`` (a ``.read()``-supporting file-like object containing
     a JSON document) to a Python object.
If the contents of ``fp`` is encoded with an ASCII based encoding other
@@ -233,16 +256,20 @@
     result of any object literal decode (a ``dict``). The return value of
     ``object_hook`` will be used instead of the ``dict``. This feature
     can be used to implement custom decoders (e.g. JSON-RPC class hinting).
-    
+
     To use a custom ``JSONDecoder`` subclass, specify it with the ``cls``
     kwarg.
+
     """
     return loads(fp.read(),
-        encoding=encoding, cls=cls, object_hook=object_hook, **kw)
+        encoding=encoding, cls=cls, object_hook=object_hook,
+        parse_float=parse_float, parse_int=parse_int,
+        parse_constant=parse_constant, **kw)
-def loads(s, encoding=None, cls=None, object_hook=None, **kw):
-    """
-    Deserialize ``s`` (a ``str`` or ``unicode`` instance containing a JSON
+
+def loads(s, encoding=None, cls=None, object_hook=None, parse_float=None,
+        parse_int=None, parse_constant=None, **kw):
+    """Deserialize ``s`` (a ``str`` or ``unicode`` instance containing a JSON
     document) to a Python object.
If ``s`` is a ``str`` instance and is encoded with an ASCII based encoding
@@ -255,33 +282,37 @@
     ``object_hook`` will be used instead of the ``dict``. This feature
     can be used to implement custom decoders (e.g. JSON-RPC class hinting).
+    ``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. 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. float).
+
+    ``parse_constant``, if specified, will be called with one of the
+    following strings: -Infinity, Infinity, NaN, null, true, false.
+    This can be used to raise an exception if invalid JSON numbers
+    are encountered.
+
     To use a custom ``JSONDecoder`` subclass, specify it with the ``cls``
     kwarg.
+
     """
-    if cls is None and encoding is None and object_hook is None and not kw:
+    if (cls is None and encoding is None and object_hook is None and
+            parse_int is None and parse_float is None and
+            parse_constant is None and not kw):
         return _default_decoder.decode(s)
     if cls is None:
         cls = JSONDecoder
     if object_hook is not None:
         kw['object_hook'] = object_hook
+    if parse_float is not None:
+        kw['parse_float'] = parse_float
+    if parse_int is not None:
+        kw['parse_int'] = parse_int
+    if parse_constant is not None:
+        kw['parse_constant'] = parse_constant
     return cls(encoding=encoding, **kw).decode(s)
-
-def read(s):
-    """
-    json-py API compatibility hook. Use loads(s) instead.
-    """
-    import warnings
-    warnings.warn("simplejson.loads(s) should be used instead of read(s)",
-        DeprecationWarning)
-    return loads(s)
-
-def write(obj):
-    """
-    json-py API compatibility hook. Use dumps(s) instead.
-    """
-    import warnings
-    warnings.warn("simplejson.dumps(s) should be used instead of write(s)",
-        DeprecationWarning)
-    return dumps(obj)
-
-
Modified: trunk/pywikipedia/simplejson/_speedups.c
===================================================================
--- trunk/pywikipedia/simplejson/_speedups.c	2009-08-07 17:25:10 UTC (rev 7129)
+++ trunk/pywikipedia/simplejson/_speedups.c	2009-08-08 00:42:34 UTC (rev 7130)
@@ -1,10 +1,81 @@
 #include "Python.h"
+#include "structmember.h"
+#if PY_VERSION_HEX < 0x02060000 && !defined(Py_TYPE)
+#define Py_TYPE(ob)     (((PyObject*)(ob))->ob_type)
+#endif
 #if PY_VERSION_HEX < 0x02050000 && !defined(PY_SSIZE_T_MIN)
 typedef int Py_ssize_t;
 #define PY_SSIZE_T_MAX INT_MAX
 #define PY_SSIZE_T_MIN INT_MIN
+#define PyInt_FromSsize_t PyInt_FromLong
+#define PyInt_AsSsize_t PyInt_AsLong
 #endif
+#ifndef Py_IS_FINITE
+#define Py_IS_FINITE(X) (!Py_IS_INFINITY(X) && !Py_IS_NAN(X))
+#endif
+#ifdef __GNUC__
+#define UNUSED __attribute__((__unused__))
+#else
+#define UNUSED
+#endif
+
+#define DEFAULT_ENCODING "utf-8"
+
+#define PyScanner_Check(op) PyObject_TypeCheck(op, &PyScannerType)
+#define PyScanner_CheckExact(op) (Py_TYPE(op) == &PyScannerType)
+#define PyEncoder_Check(op) PyObject_TypeCheck(op, &PyEncoderType)
+#define PyEncoder_CheckExact(op) (Py_TYPE(op) == &PyEncoderType)
+
+static PyTypeObject PyScannerType;
+static PyTypeObject PyEncoderType;
+
+typedef struct _PyScannerObject {
+    PyObject_HEAD
+    PyObject *encoding;
+    PyObject *strict;
+    PyObject *object_hook;
+    PyObject *parse_float;
+    PyObject *parse_int;
+    PyObject *parse_constant;
+} PyScannerObject;
+
+static PyMemberDef scanner_members[] = {
+    {"encoding", T_OBJECT, offsetof(PyScannerObject, encoding), READONLY, "encoding"},
+    {"strict", T_OBJECT, offsetof(PyScannerObject, strict), READONLY, "strict"},
+    {"object_hook", T_OBJECT, offsetof(PyScannerObject, object_hook), READONLY, "object_hook"},
+    {"parse_float", T_OBJECT, offsetof(PyScannerObject, parse_float), READONLY, "parse_float"},
+    {"parse_int", T_OBJECT, offsetof(PyScannerObject, parse_int), READONLY, "parse_int"},
+    {"parse_constant", T_OBJECT, offsetof(PyScannerObject, parse_constant), READONLY, "parse_constant"},
+    {NULL}
+};
+
+typedef struct _PyEncoderObject {
+    PyObject_HEAD
+    PyObject *markers;
+    PyObject *defaultfn;
+    PyObject *encoder;
+    PyObject *indent;
+    PyObject *key_separator;
+    PyObject *item_separator;
+    PyObject *sort_keys;
+    PyObject *skipkeys;
+    int fast_encode;
+    int allow_nan;
+} PyEncoderObject;
+
+static PyMemberDef encoder_members[] = {
+    {"markers", T_OBJECT, offsetof(PyEncoderObject, markers), READONLY, "markers"},
+    {"default", T_OBJECT, offsetof(PyEncoderObject, defaultfn), READONLY, "default"},
+    {"encoder", T_OBJECT, offsetof(PyEncoderObject, encoder), READONLY, "encoder"},
+    {"indent", T_OBJECT, offsetof(PyEncoderObject, indent), READONLY, "indent"},
+    {"key_separator", T_OBJECT, offsetof(PyEncoderObject, key_separator), READONLY, "key_separator"},
+    {"item_separator", T_OBJECT, offsetof(PyEncoderObject, item_separator), READONLY, "item_separator"},
+    {"sort_keys", T_OBJECT, offsetof(PyEncoderObject, sort_keys), READONLY, "sort_keys"},
+    {"skipkeys", T_OBJECT, offsetof(PyEncoderObject, skipkeys), READONLY, "skipkeys"},
+    {NULL}
+};
+
 static Py_ssize_t
 ascii_escape_char(Py_UNICODE c, char *output, Py_ssize_t chars);
 static PyObject *
@@ -12,10 +83,51 @@
 static PyObject *
 ascii_escape_str(PyObject *pystr);
 static PyObject *
-py_encode_basestring_ascii(PyObject* self __attribute__((__unused__)), PyObject *pystr);
+py_encode_basestring_ascii(PyObject* self UNUSED, PyObject *pystr);
 void init_speedups(void);
+static PyObject *
+scan_once_str(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr);
+static PyObject *
+scan_once_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr);
+static PyObject *
+_build_rval_index_tuple(PyObject *rval, Py_ssize_t idx);
+static PyObject *
+scanner_new(PyTypeObject *type, PyObject *args, PyObject *kwds);
+static int
+scanner_init(PyObject *self, PyObject *args, PyObject *kwds);
+static void
+scanner_dealloc(PyObject *self);
+static int
+scanner_clear(PyObject *self);
+static PyObject *
+encoder_new(PyTypeObject *type, PyObject *args, PyObject *kwds);
+static int
+encoder_init(PyObject *self, PyObject *args, PyObject *kwds);
+static void
+encoder_dealloc(PyObject *self);
+static int
+encoder_clear(PyObject *self);
+static int
+encoder_listencode_list(PyEncoderObject *s, PyObject *rval, PyObject *seq, Py_ssize_t indent_level);
+static int
+encoder_listencode_obj(PyEncoderObject *s, PyObject *rval, PyObject *obj, Py_ssize_t indent_level);
+static int
+encoder_listencode_dict(PyEncoderObject *s, PyObject *rval, PyObject *dct, Py_ssize_t indent_level);
+static PyObject *
+_encoded_const(PyObject *const);
+static void
+raise_errmsg(char *msg, PyObject *s, Py_ssize_t end);
+static PyObject *
+encoder_encode_string(PyEncoderObject *s, PyObject *obj);
+static int
+_convertPyInt_AsSsize_t(PyObject *o, Py_ssize_t *size_ptr);
+static PyObject *
+_convertPyInt_FromSsize_t(Py_ssize_t *size_ptr);
+static PyObject *
+encoder_encode_float(PyEncoderObject *s, PyObject *obj);
-#define S_CHAR(c) (c >= ' ' && c <= '~' && c != '\' && c != '/' && c != '"')
+#define S_CHAR(c) (c >= ' ' && c <= '~' && c != '\' && c != '"')
+#define IS_WHITESPACE(c) (((c) == ' ') || ((c) == '\t') || ((c) == '\n') || ((c) == '\r'))
#define MIN_EXPANSION 6
 #ifdef Py_UNICODE_WIDE
@@ -24,12 +136,31 @@
 #define MAX_EXPANSION MIN_EXPANSION
 #endif
+static int
+_convertPyInt_AsSsize_t(PyObject *o, Py_ssize_t *size_ptr)
+{
+    /* PyObject to Py_ssize_t converter */
+    *size_ptr = PyInt_AsSsize_t(o);
+    if (*size_ptr == -1 && PyErr_Occurred());
+        return 1;
+    return 0;
+}
+
+static PyObject *
+_convertPyInt_FromSsize_t(Py_ssize_t *size_ptr)
+{
+    /* Py_ssize_t to PyObject converter */
+    return PyInt_FromSsize_t(*size_ptr);
+}
+
 static Py_ssize_t
-ascii_escape_char(Py_UNICODE c, char *output, Py_ssize_t chars) {
-    Py_UNICODE x;
+ascii_escape_char(Py_UNICODE c, char *output, Py_ssize_t chars)
+{
+    /* Escape unicode code point c to ASCII escape sequences
+    in char *output. output must have at least 12 bytes unused to
+    accommodate an escaped surrogate pair "\uXXXX\uXXXX" */
     output[chars++] = '\';
     switch (c) {
-        case '/': output[chars++] = (char)c; break;
         case '\': output[chars++] = (char)c; break;
         case '"': output[chars++] = (char)c; break;
         case '\b': output[chars++] = 'b'; break;
@@ -44,36 +175,31 @@
                 Py_UNICODE v = c - 0x10000;
                 c = 0xd800 | ((v >> 10) & 0x3ff);
                 output[chars++] = 'u';
-                x = (c & 0xf000) >> 12;
-                output[chars++] = (x < 10) ? '0' + x : 'a' + (x - 10);
-                x = (c & 0x0f00) >> 8;
-                output[chars++] = (x < 10) ? '0' + x : 'a' + (x - 10);
-                x = (c & 0x00f0) >> 4;
-                output[chars++] = (x < 10) ? '0' + x : 'a' + (x - 10);
-                x = (c & 0x000f);
-                output[chars++] = (x < 10) ? '0' + x : 'a' + (x - 10);
+                output[chars++] = "0123456789abcdef"[(c >> 12) & 0xf];
+                output[chars++] = "0123456789abcdef"[(c >>  8) & 0xf];
+                output[chars++] = "0123456789abcdef"[(c >>  4) & 0xf];
+                output[chars++] = "0123456789abcdef"[(c      ) & 0xf];
                 c = 0xdc00 | (v & 0x3ff);
                 output[chars++] = '\';
             }
 #endif
             output[chars++] = 'u';
-            x = (c & 0xf000) >> 12;
-            output[chars++] = (x < 10) ? '0' + x : 'a' + (x - 10);
-            x = (c & 0x0f00) >> 8;
-            output[chars++] = (x < 10) ? '0' + x : 'a' + (x - 10);
-            x = (c & 0x00f0) >> 4;
-            output[chars++] = (x < 10) ? '0' + x : 'a' + (x - 10);
-            x = (c & 0x000f);
-            output[chars++] = (x < 10) ? '0' + x : 'a' + (x - 10);
+            output[chars++] = "0123456789abcdef"[(c >> 12) & 0xf];
+            output[chars++] = "0123456789abcdef"[(c >>  8) & 0xf];
+            output[chars++] = "0123456789abcdef"[(c >>  4) & 0xf];
+            output[chars++] = "0123456789abcdef"[(c      ) & 0xf];
     }
     return chars;
 }
static PyObject *
-ascii_escape_unicode(PyObject *pystr) {
+ascii_escape_unicode(PyObject *pystr)
+{
+    /* Take a PyUnicode pystr and return a new ASCII-only escaped PyString */
     Py_ssize_t i;
     Py_ssize_t input_chars;
     Py_ssize_t output_size;
+    Py_ssize_t max_output_size;
     Py_ssize_t chars;
     PyObject *rval;
     char *output;
@@ -81,8 +207,10 @@
input_chars = PyUnicode_GET_SIZE(pystr);
     input_unicode = PyUnicode_AS_UNICODE(pystr);
+
     /* One char input can be up to 6 chars output, estimate 4 of these */
     output_size = 2 + (MIN_EXPANSION * 4) + input_chars;
+    max_output_size = 2 + (input_chars * MAX_EXPANSION);
     rval = PyString_FromStringAndSize(NULL, output_size);
     if (rval == NULL) {
         return NULL;
@@ -94,20 +222,25 @@
         Py_UNICODE c = input_unicode[i];
         if (S_CHAR(c)) {
             output[chars++] = (char)c;
-        } else {
+        }
+        else {
             chars = ascii_escape_char(c, output, chars);
         }
         if (output_size - chars < (1 + MAX_EXPANSION)) {
             /* There's more than four, so let's resize by a lot */
-            output_size *= 2;
+            Py_ssize_t new_output_size = output_size * 2;
             /* This is an upper bound */
-            if (output_size > 2 + (input_chars * MAX_EXPANSION)) {
-                output_size = 2 + (input_chars * MAX_EXPANSION);
+            if (new_output_size > max_output_size) {
+                new_output_size = max_output_size;
             }
-            if (_PyString_Resize(&rval, output_size) == -1) {
-                return NULL;
+            /* Make sure that the output size changed before resizing */
+            if (new_output_size != output_size) {
+                output_size = new_output_size;
+                if (_PyString_Resize(&rval, output_size) == -1) {
+                    return NULL;
+                }
+                output = PyString_AS_STRING(rval);
             }
-            output = PyString_AS_STRING(rval);
         }
     }
     output[chars++] = '"';
@@ -118,7 +251,9 @@
 }
static PyObject *
-ascii_escape_str(PyObject *pystr) {
+ascii_escape_str(PyObject *pystr)
+{
+    /* Take a PyString pystr and return a new ASCII-only escaped PyString */
     Py_ssize_t i;
     Py_ssize_t input_chars;
     Py_ssize_t output_size;
@@ -129,31 +264,56 @@
input_chars = PyString_GET_SIZE(pystr);
     input_str = PyString_AS_STRING(pystr);
-    /* One char input can be up to 6 chars output, estimate 4 of these */
-    output_size = 2 + (MIN_EXPANSION * 4) + input_chars;
+
+    /* Fast path for a string that's already ASCII */
+    for (i = 0; i < input_chars; i++) {
+        Py_UNICODE c = (Py_UNICODE)(unsigned char)input_str[i];
+        if (!S_CHAR(c)) {
+            /* If we have to escape something, scan the string for unicode */
+            Py_ssize_t j;
+            for (j = i; j < input_chars; j++) {
+                c = (Py_UNICODE)(unsigned char)input_str[j];
+                if (c > 0x7f) {
+                    /* We hit a non-ASCII character, bail to unicode mode */
+                    PyObject *uni;
+                    uni = PyUnicode_DecodeUTF8(input_str, input_chars, "strict");
+                    if (uni == NULL) {
+                        return NULL;
+                    }
+                    rval = ascii_escape_unicode(uni);
+                    Py_DECREF(uni);
+                    return rval;
+                }
+            }
+            break;
+        }
+    }
+
+    if (i == input_chars) {
+        /* Input is already ASCII */
+        output_size = 2 + input_chars;
+    }
+    else {
+        /* One char input can be up to 6 chars output, estimate 4 of these */
+        output_size = 2 + (MIN_EXPANSION * 4) + input_chars;
+    }
     rval = PyString_FromStringAndSize(NULL, output_size);
     if (rval == NULL) {
         return NULL;
     }
     output = PyString_AS_STRING(rval);
-    chars = 0;
-    output[chars++] = '"';
-    for (i = 0; i < input_chars; i++) {
-        Py_UNICODE c = (Py_UNICODE)input_str[i];
+    output[0] = '"';
+
+    /* We know that everything up to i is ASCII already */
+    chars = i + 1;
+    memcpy(&output[1], input_str, i);
+
+    for (; i < input_chars; i++) {
+        Py_UNICODE c = (Py_UNICODE)(unsigned char)input_str[i];
         if (S_CHAR(c)) {
             output[chars++] = (char)c;
-        } else if (c > 0x7F) {
-            /* We hit a non-ASCII character, bail to unicode mode */
-            PyObject *uni;
-            Py_DECREF(rval);
-            uni = PyUnicode_DecodeUTF8(input_str, input_chars, "strict");
-            if (uni == NULL) {
-                return NULL;
-            }
-            rval = ascii_escape_unicode(uni);
-            Py_DECREF(uni);
-            return rval;
-        } else {
+        }
+        else {
             chars = ascii_escape_char(c, output, chars);
         }
         /* An ASCII char can't possibly expand to a surrogate! */
@@ -176,40 +336,1994 @@
     return rval;
 }
+static void
+raise_errmsg(char *msg, PyObject *s, Py_ssize_t end)
+{
+    /* Use the Python function simplejson.decoder.errmsg to raise a nice
+    looking ValueError exception */
+    static PyObject *errmsg_fn = NULL;
+    PyObject *pymsg;
+    if (errmsg_fn == NULL) {
+        PyObject *decoder = PyImport_ImportModule("simplejson.decoder");
+        if (decoder == NULL)
+            return;
+        errmsg_fn = PyObject_GetAttrString(decoder, "errmsg");
+        Py_DECREF(decoder);
+        if (errmsg_fn == NULL)
+            return;
+    }
+    pymsg = PyObject_CallFunction(errmsg_fn, "(zOO&)", msg, s, _convertPyInt_FromSsize_t, &end);
+    if (pymsg) {
+        PyErr_SetObject(PyExc_ValueError, pymsg);
+        Py_DECREF(pymsg);
+    }
+}
+
+static PyObject *
+join_list_unicode(PyObject *lst)
+{
+    /* return u''.join(lst) */
+    static PyObject *joinfn = NULL;
+    if (joinfn == NULL) {
+        PyObject *ustr = PyUnicode_FromUnicode(NULL, 0);
+        if (ustr == NULL)
+            return NULL;
+
+        joinfn = PyObject_GetAttrString(ustr, "join");
+        Py_DECREF(ustr);
+        if (joinfn == NULL)
+            return NULL;
+    }
+    return PyObject_CallFunctionObjArgs(joinfn, lst, NULL);
+}
+
+static PyObject *
+join_list_string(PyObject *lst)
+{
+    /* return ''.join(lst) */
+    static PyObject *joinfn = NULL;
+    if (joinfn == NULL) {
+        PyObject *ustr = PyString_FromStringAndSize(NULL, 0);
+        if (ustr == NULL)
+            return NULL;
+
+        joinfn = PyObject_GetAttrString(ustr, "join");
+        Py_DECREF(ustr);
+        if (joinfn == NULL)
+            return NULL;
+    }
+    return PyObject_CallFunctionObjArgs(joinfn, lst, NULL);
+}
+
+static PyObject *
+_build_rval_index_tuple(PyObject *rval, Py_ssize_t idx) {
+    /* return (rval, idx) tuple, stealing reference to rval */
+    PyObject *tpl;
+    PyObject *pyidx;
+    /*
+    steal a reference to rval, returns (rval, idx)
+    */
+    if (rval == NULL) {
+        return NULL;
+    }
+    pyidx = PyInt_FromSsize_t(idx);
+    if (pyidx == NULL) {
+        Py_DECREF(rval);
+        return NULL;
+    }
+    tpl = PyTuple_New(2);
+    if (tpl == NULL) {
+        Py_DECREF(pyidx);
+        Py_DECREF(rval);
+        return NULL;
+    }
+    PyTuple_SET_ITEM(tpl, 0, rval);
+    PyTuple_SET_ITEM(tpl, 1, pyidx);
+    return tpl;
+}
+
+static PyObject *
+scanstring_str(PyObject *pystr, Py_ssize_t end, char *encoding, int strict, Py_ssize_t *next_end_ptr)
+{
+    /* Read the JSON string from PyString pystr.
+    end is the index of the first character after the quote.
+    encoding is the encoding of pystr (must be an ASCII superset)
+    if strict is zero then literal control characters are allowed
+    *next_end_ptr is a return-by-reference index of the character
+        after the end quote
+
+    Return value is a new PyString (if ASCII-only) or PyUnicode
+    */
+    PyObject *rval;
+    Py_ssize_t len = PyString_GET_SIZE(pystr);
+    Py_ssize_t begin = end - 1;
+    Py_ssize_t next = begin;
+    int has_unicode = 0;
+    char *buf = PyString_AS_STRING(pystr);
+    PyObject *chunks = PyList_New(0);
+    if (chunks == NULL) {
+        goto bail;
+    }
+    if (end < 0 || len <= end) {
+        PyErr_SetString(PyExc_ValueError, "end is out of bounds");
+        goto bail;
+    }
+    while (1) {
+        /* Find the end of the string or the next escape */
+        Py_UNICODE c = 0;
+        PyObject *chunk = NULL;
+        for (next = end; next < len; next++) {
+            c = (unsigned char)buf[next];
+            if (c == '"' || c == '\') {
+                break;
+            }
+            else if (strict && c <= 0x1f) {
+                raise_errmsg("Invalid control character at", pystr, next);
+                goto bail;
+            }
+            else if (c > 0x7f) {
+                has_unicode = 1;
+            }
+        }
+        if (!(c == '"' || c == '\')) {
+            raise_errmsg("Unterminated string starting at", pystr, begin);
+            goto bail;
+        }
+        /* Pick up this chunk if it's not zero length */
+        if (next != end) {
+            PyObject *strchunk = PyString_FromStringAndSize(&buf[end], next - end);
+            if (strchunk == NULL) {
+                goto bail;
+            }
+            if (has_unicode) {
+                chunk = PyUnicode_FromEncodedObject(strchunk, encoding, NULL);
+                Py_DECREF(strchunk);
+                if (chunk == NULL) {
+                    goto bail;
+                }
+            }
+            else {
+                chunk = strchunk;
+            }
+            if (PyList_Append(chunks, chunk)) {
+                Py_DECREF(chunk);
+                goto bail;
+            }
+            Py_DECREF(chunk);
+        }
+        next++;
+        if (c == '"') {
+            end = next;
+            break;
+        }
+        if (next == len) {
+            raise_errmsg("Unterminated string starting at", pystr, begin);
+            goto bail;
+        }
+        c = buf[next];
+        if (c != 'u') {
+            /* Non-unicode backslash escapes */
+            end = next + 1;
+            switch (c) {
+                case '"': break;
+                case '\': break;
+                case '/': break;
+                case 'b': c = '\b'; break;
+                case 'f': c = '\f'; break;
+                case 'n': c = '\n'; break;
+                case 'r': c = '\r'; break;
+                case 't': c = '\t'; break;
+                default: c = 0;
+            }
+            if (c == 0) {
+                raise_errmsg("Invalid \escape", pystr, end - 2);
+                goto bail;
+            }
+        }
+        else {
+            c = 0;
+            next++;
+            end = next + 4;
+            if (end >= len) {
+                raise_errmsg("Invalid \uXXXX escape", pystr, next - 1);
+                goto bail;
+            }
+            /* Decode 4 hex digits */
+            for (; next < end; next++) {
+                Py_UNICODE digit = buf[next];
+                c <<= 4;
+                switch (digit) {
+                    case '0': case '1': case '2': case '3': case '4':
+                    case '5': case '6': case '7': case '8': case '9':
+                        c |= (digit - '0'); break;
+                    case 'a': case 'b': case 'c': case 'd': case 'e':
+                    case 'f':
+                        c |= (digit - 'a' + 10); break;
+                    case 'A': case 'B': case 'C': case 'D': case 'E':
+                    case 'F':
+                        c |= (digit - 'A' + 10); break;
+                    default:
+                        raise_errmsg("Invalid \uXXXX escape", pystr, end - 5);
+                        goto bail;
+                }
+            }
+#ifdef Py_UNICODE_WIDE
+            /* Surrogate pair */
+            if ((c & 0xfc00) == 0xd800) {
+                Py_UNICODE c2 = 0;
+                if (end + 6 >= len) {
+                    raise_errmsg("Unpaired high surrogate", pystr, end - 5);
+                    goto bail;
+                }
+                if (buf[next++] != '\' || buf[next++] != 'u') {
+                    raise_errmsg("Unpaired high surrogate", pystr, end - 5);
+                    goto bail;
+                }
+                end += 6;
+                /* Decode 4 hex digits */
+                for (; next < end; next++) {
+                    c2 <<= 4;
+                    Py_UNICODE digit = buf[next];
+                    switch (digit) {
+                        case '0': case '1': case '2': case '3': case '4':
+                        case '5': case '6': case '7': case '8': case '9':
+                            c2 |= (digit - '0'); break;
+                        case 'a': case 'b': case 'c': case 'd': case 'e':
+                        case 'f':
+                            c2 |= (digit - 'a' + 10); break;
+                        case 'A': case 'B': case 'C': case 'D': case 'E':
+                        case 'F':
+                            c2 |= (digit - 'A' + 10); break;
+                        default:
+                            raise_errmsg("Invalid \uXXXX escape", pystr, end - 5);
+                            goto bail;
+                    }
+                }
+                if ((c2 & 0xfc00) != 0xdc00) {
+                    raise_errmsg("Unpaired high surrogate", pystr, end - 5);
+                    goto bail;
+                }
+                c = 0x10000 + (((c - 0xd800) << 10) | (c2 - 0xdc00));
+            }
+            else if ((c & 0xfc00) == 0xdc00) {
+                raise_errmsg("Unpaired low surrogate", pystr, end - 5);
+                goto bail;
+            }
+#endif
+        }
+        if (c > 0x7f) {
+            has_unicode = 1;
+        }
+        if (has_unicode) {
+            chunk = PyUnicode_FromUnicode(&c, 1);
+            if (chunk == NULL) {
+                goto bail;
+            }
+        }
+        else {
+            char c_char = Py_CHARMASK(c);
+            chunk = PyString_FromStringAndSize(&c_char, 1);
+            if (chunk == NULL) {
+                goto bail;
+            }
+        }
+        if (PyList_Append(chunks, chunk)) {
+            Py_DECREF(chunk);
+            goto bail;
+        }
+        Py_DECREF(chunk);
+    }
+
+    rval = join_list_string(chunks);
+    if (rval == NULL) {
+        goto bail;
+    }
+    Py_CLEAR(chunks);
+    *next_end_ptr = end;
+    return rval;
+bail:
+    *next_end_ptr = -1;
+    Py_XDECREF(chunks);
+    return NULL;
+}
+
+
+static PyObject *
+scanstring_unicode(PyObject *pystr, Py_ssize_t end, int strict, Py_ssize_t *next_end_ptr)
+{
+    /* Read the JSON string from PyUnicode pystr.
+    end is the index of the first character after the quote.
+    if strict is zero then literal control characters are allowed
+    *next_end_ptr is a return-by-reference index of the character
+        after the end quote
+
+    Return value is a new PyUnicode
+    */
+    PyObject *rval;
+    Py_ssize_t len = PyUnicode_GET_SIZE(pystr);
+    Py_ssize_t begin = end - 1;
+    Py_ssize_t next = begin;
+    const Py_UNICODE *buf = PyUnicode_AS_UNICODE(pystr);
+    PyObject *chunks = PyList_New(0);
+    if (chunks == NULL) {
+        goto bail;
+    }
+    if (end < 0 || len <= end) {
+        PyErr_SetString(PyExc_ValueError, "end is out of bounds");
+        goto bail;
+    }
+    while (1) {
+        /* Find the end of the string or the next escape */
+        Py_UNICODE c = 0;
+        PyObject *chunk = NULL;
+        for (next = end; next < len; next++) {
+            c = buf[next];
+            if (c == '"' || c == '\') {
+                break;
+            }
+            else if (strict && c <= 0x1f) {
+                raise_errmsg("Invalid control character at", pystr, next);
+                goto bail;
+            }
+        }
+        if (!(c == '"' || c == '\')) {
+            raise_errmsg("Unterminated string starting at", pystr, begin);
+            goto bail;
+        }
+        /* Pick up this chunk if it's not zero length */
+        if (next != end) {
+            chunk = PyUnicode_FromUnicode(&buf[end], next - end);
+            if (chunk == NULL) {
+                goto bail;
+            }
+            if (PyList_Append(chunks, chunk)) {
+                Py_DECREF(chunk);
+                goto bail;
+            }
+            Py_DECREF(chunk);
+        }
+        next++;
+        if (c == '"') {
+            end = next;
+            break;
+        }
+        if (next == len) {
+            raise_errmsg("Unterminated string starting at", pystr, begin);
+            goto bail;
+        }
+        c = buf[next];
+        if (c != 'u') {
+            /* Non-unicode backslash escapes */
+            end = next + 1;
+            switch (c) {
+                case '"': break;
+                case '\': break;
+                case '/': break;
+                case 'b': c = '\b'; break;
+                case 'f': c = '\f'; break;
+                case 'n': c = '\n'; break;
+                case 'r': c = '\r'; break;
+                case 't': c = '\t'; break;
+                default: c = 0;
+            }
+            if (c == 0) {
+                raise_errmsg("Invalid \escape", pystr, end - 2);
+                goto bail;
+            }
+        }
+        else {
+            c = 0;
+            next++;
+            end = next + 4;
+            if (end >= len) {
+                raise_errmsg("Invalid \uXXXX escape", pystr, next - 1);
+                goto bail;
+            }
+            /* Decode 4 hex digits */
+            for (; next < end; next++) {
+                Py_UNICODE digit = buf[next];
+                c <<= 4;
+                switch (digit) {
+                    case '0': case '1': case '2': case '3': case '4':
+                    case '5': case '6': case '7': case '8': case '9':
+                        c |= (digit - '0'); break;
+                    case 'a': case 'b': case 'c': case 'd': case 'e':
+                    case 'f':
+                        c |= (digit - 'a' + 10); break;
+                    case 'A': case 'B': case 'C': case 'D': case 'E':
+                    case 'F':
+                        c |= (digit - 'A' + 10); break;
+                    default:
+                        raise_errmsg("Invalid \uXXXX escape", pystr, end - 5);
+                        goto bail;
+                }
+            }
+#ifdef Py_UNICODE_WIDE
+            /* Surrogate pair */
+            if ((c & 0xfc00) == 0xd800) {
+                Py_UNICODE c2 = 0;
+                if (end + 6 >= len) {
+                    raise_errmsg("Unpaired high surrogate", pystr, end - 5);
+                    goto bail;
+                }
+                if (buf[next++] != '\' || buf[next++] != 'u') {
+                    raise_errmsg("Unpaired high surrogate", pystr, end - 5);
+                    goto bail;
+                }
+                end += 6;
+                /* Decode 4 hex digits */
+                for (; next < end; next++) {
+                    c2 <<= 4;
+                    Py_UNICODE digit = buf[next];
+                    switch (digit) {
+                        case '0': case '1': case '2': case '3': case '4':
+                        case '5': case '6': case '7': case '8': case '9':
+                            c2 |= (digit - '0'); break;
+                        case 'a': case 'b': case 'c': case 'd': case 'e':
+                        case 'f':
+                            c2 |= (digit - 'a' + 10); break;
+                        case 'A': case 'B': case 'C': case 'D': case 'E':
+                        case 'F':
+                            c2 |= (digit - 'A' + 10); break;
+                        default:
+                            raise_errmsg("Invalid \uXXXX escape", pystr, end - 5);
+                            goto bail;
+                    }
+                }
+                if ((c2 & 0xfc00) != 0xdc00) {
+                    raise_errmsg("Unpaired high surrogate", pystr, end - 5);
+                    goto bail;
+                }
+                c = 0x10000 + (((c - 0xd800) << 10) | (c2 - 0xdc00));
+            }
+            else if ((c & 0xfc00) == 0xdc00) {
+                raise_errmsg("Unpaired low surrogate", pystr, end - 5);
+                goto bail;
+            }
+#endif
+        }
+        chunk = PyUnicode_FromUnicode(&c, 1);
+        if (chunk == NULL) {
+            goto bail;
+        }
+        if (PyList_Append(chunks, chunk)) {
+            Py_DECREF(chunk);
+            goto bail;
+        }
+        Py_DECREF(chunk);
+    }
+
+    rval = join_list_unicode(chunks);
+    if (rval == NULL) {
+        goto bail;
+    }
+    Py_DECREF(chunks);
+    *next_end_ptr = end;
+    return rval;
+bail:
+    *next_end_ptr = -1;
+    Py_XDECREF(chunks);
+    return NULL;
+}
+
+PyDoc_STRVAR(pydoc_scanstring,
+    "scanstring(basestring, end, encoding, strict=True) -> (str, end)\n"
+    "\n"
+    "Scan the string s for a JSON string. End is the index of the\n"
+    "character in s after the quote that started the JSON string.\n"
+    "Unescapes all valid JSON string escape sequences and raises ValueError\n"
+    "on attempt to decode an invalid string. If strict is False then literal\n"
+    "control characters are allowed in the string.\n"
+    "\n"
+    "Returns a tuple of the decoded string and the index of the character in s\n"
+    "after the end quote."
+);
+
+static PyObject *
+py_scanstring(PyObject* self UNUSED, PyObject *args)
+{
+    PyObject *pystr;
+    PyObject *rval;
+    Py_ssize_t end;
+    Py_ssize_t next_end = -1;
+    char *encoding = NULL;
+    int strict = 1;
+    if (!PyArg_ParseTuple(args, "OO&|zi:scanstring", &pystr, _convertPyInt_AsSsize_t, &end, &encoding, &strict)) {
+        return NULL;
+    }
+    if (encoding == NULL) {
+        encoding = DEFAULT_ENCODING;
+    }
+    if (PyString_Check(pystr)) {
+        rval = scanstring_str(pystr, end, encoding, strict, &next_end);
+    }
+    else if (PyUnicode_Check(pystr)) {
+        rval = scanstring_unicode(pystr, end, strict, &next_end);
+    }
+    else {
+        PyErr_Format(PyExc_TypeError,
+                     "first argument must be a string, not %.80s",
+                     Py_TYPE(pystr)->tp_name);
+        return NULL;
+    }
+    return _build_rval_index_tuple(rval, next_end);
+}
+
 PyDoc_STRVAR(pydoc_encode_basestring_ascii,
     "encode_basestring_ascii(basestring) -> str\n"
     "\n"
-    "..."
+    "Return an ASCII-only JSON representation of a Python string"
 );
static PyObject *
-py_encode_basestring_ascii(PyObject* self __attribute__((__unused__)), PyObject *pystr) {
+py_encode_basestring_ascii(PyObject* self UNUSED, PyObject *pystr)
+{
+    /* Return an ASCII-only JSON representation of a Python string */
     /* METH_O */
     if (PyString_Check(pystr)) {
         return ascii_escape_str(pystr);
-    } else if (PyUnicode_Check(pystr)) {
+    }
+    else if (PyUnicode_Check(pystr)) {
         return ascii_escape_unicode(pystr);
     }
-    PyErr_SetString(PyExc_TypeError, "first argument must be a string");
+    else {
+        PyErr_Format(PyExc_TypeError,
+                     "first argument must be a string, not %.80s",
+                     Py_TYPE(pystr)->tp_name);
+        return NULL;
+    }
+}
+
+static void
+scanner_dealloc(PyObject *self)
+{
+    /* Deallocate scanner object */
+    scanner_clear(self);
+    Py_TYPE(self)->tp_free(self);
+}
+
+static int
+scanner_traverse(PyObject *self, visitproc visit, void *arg)
+{
+    PyScannerObject *s;
+    assert(PyScanner_Check(self));
+    s = (PyScannerObject *)self;
+    Py_VISIT(s->encoding);
+    Py_VISIT(s->strict);
+    Py_VISIT(s->object_hook);
+    Py_VISIT(s->parse_float);
+    Py_VISIT(s->parse_int);
+    Py_VISIT(s->parse_constant);
+    return 0;
+}
+
+static int
+scanner_clear(PyObject *self)
+{
+    PyScannerObject *s;
+    assert(PyScanner_Check(self));
+    s = (PyScannerObject *)self;
+    Py_CLEAR(s->encoding);
+    Py_CLEAR(s->strict);
+    Py_CLEAR(s->object_hook);
+    Py_CLEAR(s->parse_float);
+    Py_CLEAR(s->parse_int);
+    Py_CLEAR(s->parse_constant);
+    return 0;
+}
+
+static PyObject *
+_parse_object_str(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr) {
+    /* Read a JSON object from PyString pystr.
+    idx is the index of the first character after the opening curly brace.
+    *next_idx_ptr is a return-by-reference index to the first character after
+        the closing curly brace.
+
+    Returns a new PyObject (usually a dict, but object_hook can change that)
+    */
+    char *str = PyString_AS_STRING(pystr);
+    Py_ssize_t end_idx = PyString_GET_SIZE(pystr) - 1;
+    PyObject *rval = PyDict_New();
+    PyObject *key = NULL;
+    PyObject *val = NULL;
+    char *encoding = PyString_AS_STRING(s->encoding);
+    int strict = PyObject_IsTrue(s->strict);
+    Py_ssize_t next_idx;
+    if (rval == NULL)
+        return NULL;
+
+    /* skip whitespace after { */
+    while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
+
+    /* only loop if the object is non-empty */
+    if (idx <= end_idx && str[idx] != '}') {
+        while (idx <= end_idx) {
+            /* read key */
+            if (str[idx] != '"') {
+                raise_errmsg("Expecting property name", pystr, idx);
+                goto bail;
+            }
+            key = scanstring_str(pystr, idx + 1, encoding, strict, &next_idx);
+            if (key == NULL)
+                goto bail;
+            idx = next_idx;
+
+            /* skip whitespace between key and : delimiter, read :, skip whitespace */
+            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
+            if (idx > end_idx || str[idx] != ':') {
+                raise_errmsg("Expecting : delimiter", pystr, idx);
+                goto bail;
+            }
+            idx++;
+            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
+
+            /* read any JSON data type */
+            val = scan_once_str(s, pystr, idx, &next_idx);
+            if (val == NULL)
+                goto bail;
+
+            if (PyDict_SetItem(rval, key, val) == -1)
+                goto bail;
+
+            Py_CLEAR(key);
+            Py_CLEAR(val);
+            idx = next_idx;
+
+            /* skip whitespace before } or , */
+            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
+
+            /* bail if the object is closed or we didn't get the , delimiter */
+            if (idx > end_idx) break;
+            if (str[idx] == '}') {
+                break;
+            }
+            else if (str[idx] != ',') {
+                raise_errmsg("Expecting , delimiter", pystr, idx);
+                goto bail;
+            }
+            idx++;
+
+            /* skip whitespace after , delimiter */
+            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
+        }
+    }
+    /* verify that idx < end_idx, str[idx] should be '}' */
+    if (idx > end_idx || str[idx] != '}') {
+        raise_errmsg("Expecting object", pystr, end_idx);
+        goto bail;
+    }
+    /* if object_hook is not None: rval = object_hook(rval) */
+    if (s->object_hook != Py_None) {
+        val = PyObject_CallFunctionObjArgs(s->object_hook, rval, NULL);
+        if (val == NULL)
+            goto bail;
+        Py_DECREF(rval);
+        rval = val;
+        val = NULL;
+    }
+    *next_idx_ptr = idx + 1;
+    return rval;
+bail:
+    Py_XDECREF(key);
+    Py_XDECREF(val);
+    Py_DECREF(rval);
     return NULL;
 }
-#define DEFN(n, k) \
-    {  \
-        #n, \
-        (PyCFunction)py_ ##n, \
-        k, \
-        pydoc_ ##n \
+static PyObject *
+_parse_object_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr) {
+    /* Read a JSON object from PyUnicode pystr.
+    idx is the index of the first character after the opening curly brace.
+    *next_idx_ptr is a return-by-reference index to the first character after
+        the closing curly brace.
+
+    Returns a new PyObject (usually a dict, but object_hook can change that)
+    */
+    Py_UNICODE *str = PyUnicode_AS_UNICODE(pystr);
+    Py_ssize_t end_idx = PyUnicode_GET_SIZE(pystr) - 1;
+    PyObject *val = NULL;
+    PyObject *rval = PyDict_New();
+    PyObject *key = NULL;
+    int strict = PyObject_IsTrue(s->strict);
+    Py_ssize_t next_idx;
+    if (rval == NULL)
+        return NULL;
+
+    /* skip whitespace after { */
+    while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
+
+    /* only loop if the object is non-empty */
+    if (idx <= end_idx && str[idx] != '}') {
+        while (idx <= end_idx) {
+            /* read key */
+            if (str[idx] != '"') {
+                raise_errmsg("Expecting property name", pystr, idx);
+                goto bail;
+            }
+            key = scanstring_unicode(pystr, idx + 1, strict, &next_idx);
+            if (key == NULL)
+                goto bail;
+            idx = next_idx;
+
+            /* skip whitespace between key and : delimiter, read :, skip whitespace */
+            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
+            if (idx > end_idx || str[idx] != ':') {
+                raise_errmsg("Expecting : delimiter", pystr, idx);
+                goto bail;
+            }
+            idx++;
+            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
+
+            /* read any JSON term */
+            val = scan_once_unicode(s, pystr, idx, &next_idx);
+            if (val == NULL)
+                goto bail;
+
+            if (PyDict_SetItem(rval, key, val) == -1)
+                goto bail;
+
+            Py_CLEAR(key);
+            Py_CLEAR(val);
+            idx = next_idx;
+
+            /* skip whitespace before } or , */
+            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
+
+            /* bail if the object is closed or we didn't get the , delimiter */
+            if (idx > end_idx) break;
+            if (str[idx] == '}') {
+                break;
+            }
+            else if (str[idx] != ',') {
+                raise_errmsg("Expecting , delimiter", pystr, idx);
+                goto bail;
+            }
+            idx++;
+
+            /* skip whitespace after , delimiter */
+            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
+        }
     }
+
+    /* verify that idx < end_idx, str[idx] should be '}' */
+    if (idx > end_idx || str[idx] != '}') {
+        raise_errmsg("Expecting object", pystr, end_idx);
+        goto bail;
+    }
+
+    /* if object_hook is not None: rval = object_hook(rval) */
+    if (s->object_hook != Py_None) {
+        val = PyObject_CallFunctionObjArgs(s->object_hook, rval, NULL);
+        if (val == NULL)
+            goto bail;
+        Py_DECREF(rval);
+        rval = val;
+        val = NULL;
+    }
+    *next_idx_ptr = idx + 1;
+    return rval;
+bail:
+    Py_XDECREF(key);
+    Py_XDECREF(val);
+    Py_DECREF(rval);
+    return NULL;
+}
+
+static PyObject *
+_parse_array_str(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr) {
+    /* Read a JSON array from PyString pystr.
+    idx is the index of the first character after the opening brace.
+    *next_idx_ptr is a return-by-reference index to the first character after
+        the closing brace.
+
+    Returns a new PyList
+    */
+    char *str = PyString_AS_STRING(pystr);
+    Py_ssize_t end_idx = PyString_GET_SIZE(pystr) - 1;
+    PyObject *val = NULL;
+    PyObject *rval = PyList_New(0);
+    Py_ssize_t next_idx;
+    if (rval == NULL)
+        return NULL;
+
+    /* skip whitespace after [ */
+    while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
+
+    /* only loop if the array is non-empty */
+    if (idx <= end_idx && str[idx] != ']') {
+        while (idx <= end_idx) {
+
+            /* read any JSON term and de-tuplefy the (rval, idx) */
+            val = scan_once_str(s, pystr, idx, &next_idx);
+            if (val == NULL)
+                goto bail;
+
+            if (PyList_Append(rval, val) == -1)
+                goto bail;
+
+            Py_CLEAR(val);
+            idx = next_idx;
+
+            /* skip whitespace between term and , */
+            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
+
+            /* bail if the array is closed or we didn't get the , delimiter */
+            if (idx > end_idx) break;
+            if (str[idx] == ']') {
+                break;
+            }
+            else if (str[idx] != ',') {
+                raise_errmsg("Expecting , delimiter", pystr, idx);
+                goto bail;
+            }
+            idx++;
+
+            /* skip whitespace after , */
+            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
+        }
+    }
+
+    /* verify that idx < end_idx, str[idx] should be ']' */
+    if (idx > end_idx || str[idx] != ']') {
+        raise_errmsg("Expecting object", pystr, end_idx);
+        goto bail;
+    }
+    *next_idx_ptr = idx + 1;
+    return rval;
+bail:
+    Py_XDECREF(val);
+    Py_DECREF(rval);
+    return NULL;
+}
+
+static PyObject *
+_parse_array_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr) {
+    /* Read a JSON array from PyString pystr.
+    idx is the index of the first character after the opening brace.
+    *next_idx_ptr is a return-by-reference index to the first character after
+        the closing brace.
+
+    Returns a new PyList
+    */
+    Py_UNICODE *str = PyUnicode_AS_UNICODE(pystr);
+    Py_ssize_t end_idx = PyUnicode_GET_SIZE(pystr) - 1;
+    PyObject *val = NULL;
+    PyObject *rval = PyList_New(0);
+    Py_ssize_t next_idx;
+    if (rval == NULL)
+        return NULL;
+
+    /* skip whitespace after [ */
+    while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
+
+    /* only loop if the array is non-empty */
+    if (idx <= end_idx && str[idx] != ']') {
+        while (idx <= end_idx) {
+
+            /* read any JSON term  */
+            val = scan_once_unicode(s, pystr, idx, &next_idx);
+            if (val == NULL)
+                goto bail;
+
+            if (PyList_Append(rval, val) == -1)
+                goto bail;
+
+            Py_CLEAR(val);
+            idx = next_idx;
+
+            /* skip whitespace between term and , */
+            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
+
+            /* bail if the array is closed or we didn't get the , delimiter */
+            if (idx > end_idx) break;
+            if (str[idx] == ']') {
+                break;
+            }
+            else if (str[idx] != ',') {
+                raise_errmsg("Expecting , delimiter", pystr, idx);
+                goto bail;
+            }
+            idx++;
+
+            /* skip whitespace after , */
+            while (idx <= end_idx && IS_WHITESPACE(str[idx])) idx++;
+        }
+    }
+
+    /* verify that idx < end_idx, str[idx] should be ']' */
+    if (idx > end_idx || str[idx] != ']') {
+        raise_errmsg("Expecting object", pystr, end_idx);
+        goto bail;
+    }
+    *next_idx_ptr = idx + 1;
+    return rval;
+bail:
+    Py_XDECREF(val);
+    Py_DECREF(rval);
+    return NULL;
+}
+
+static PyObject *
+_parse_constant(PyScannerObject *s, char *constant, Py_ssize_t idx, Py_ssize_t *next_idx_ptr) {
+    /* Read a JSON constant from PyString pystr.
+    constant is the constant string that was found
+        ("NaN", "Infinity", "-Infinity").
+    idx is the index of the first character of the constant
+    *next_idx_ptr is a return-by-reference index to the first character after
+        the constant.
+
+    Returns the result of parse_constant
+    */
+    PyObject *cstr;
+    PyObject *rval;
+    /* constant is "NaN", "Infinity", or "-Infinity" */
+    cstr = PyString_InternFromString(constant);
+    if (cstr == NULL)
+        return NULL;
+
+    /* rval = parse_constant(constant) */
+    rval = PyObject_CallFunctionObjArgs(s->parse_constant, cstr, NULL);
+    idx += PyString_GET_SIZE(cstr);
+    Py_DECREF(cstr);
+    *next_idx_ptr = idx;
+    return rval;
+}
+
+static PyObject *
+_match_number_str(PyScannerObject *s, PyObject *pystr, Py_ssize_t start, Py_ssize_t *next_idx_ptr) {
+    /* Read a JSON number from PyString pystr.
+    idx is the index of the first character of the number
+    *next_idx_ptr is a return-by-reference index to the first character after
+        the number.
+
+    Returns a new PyObject representation of that number:
+        PyInt, PyLong, or PyFloat.
+        May return other types if parse_int or parse_float are set
+    */
+    char *str = PyString_AS_STRING(pystr);
+    Py_ssize_t end_idx = PyString_GET_SIZE(pystr) - 1;
+    Py_ssize_t idx = start;
+    int is_float = 0;
+    PyObject *rval;
+    PyObject *numstr;
+
+    /* read a sign if it's there, make sure it's not the end of the string */
+    if (str[idx] == '-') {
+        idx++;
+        if (idx > end_idx) {
+            PyErr_SetNone(PyExc_StopIteration);
+            return NULL;
+        }
+    }
+
+    /* read as many integer digits as we find as long as it doesn't start with 0 */
+    if (str[idx] >= '1' && str[idx] <= '9') {
+        idx++;
+        while (idx <= end_idx && str[idx] >= '0' && str[idx] <= '9') idx++;
+    }
+    /* if it starts with 0 we only expect one integer digit */
+    else if (str[idx] == '0') {
+        idx++;
+    }
+    /* no integer digits, error */
+    else {
+        PyErr_SetNone(PyExc_StopIteration);
+        return NULL;
+    }
+
+    /* if the next char is '.' followed by a digit then read all float digits */
+    if (idx < end_idx && str[idx] == '.' && str[idx + 1] >= '0' && str[idx + 1] <= '9') {
+        is_float = 1;
+        idx += 2;
+        while (idx <= end_idx && str[idx] >= '0' && str[idx] <= '9') idx++;
+    }
+
+    /* if the next char is 'e' or 'E' then maybe read the exponent (or backtrack) */
+    if (idx < end_idx && (str[idx] == 'e' || str[idx] == 'E')) {
+
+        /* save the index of the 'e' or 'E' just in case we need to backtrack */
+        Py_ssize_t e_start = idx;
+        idx++;
+
+        /* read an exponent sign if present */
+        if (idx < end_idx && (str[idx] == '-' || str[idx] == '+')) idx++;
+
+        /* read all digits */
+        while (idx <= end_idx && str[idx] >= '0' && str[idx] <= '9') idx++;
+
+        /* if we got a digit, then parse as float. if not, backtrack */
+        if (str[idx - 1] >= '0' && str[idx - 1] <= '9') {
+            is_float = 1;
+        }
+        else {
+            idx = e_start;
+        }
+    }
+
+    /* copy the section we determined to be a number */
+    numstr = PyString_FromStringAndSize(&str[start], idx - start);
+    if (numstr == NULL)
+        return NULL;
+    if (is_float) {
+        /* parse as a float using a fast path if available, otherwise call user defined method */
+        if (s->parse_float != (PyObject *)&PyFloat_Type) {
+            rval = PyObject_CallFunctionObjArgs(s->parse_float, numstr, NULL);
+        }
+        else {
+            rval = PyFloat_FromDouble(PyOS_ascii_atof(PyString_AS_STRING(numstr)));
+        }
+    }
+    else {
+        /* parse as an int using a fast path if available, otherwise call user defined method */
+        if (s->parse_int != (PyObject *)&PyInt_Type) {
+            rval = PyObject_CallFunctionObjArgs(s->parse_int, numstr, NULL);
+        }
+        else {
+            rval = PyInt_FromString(PyString_AS_STRING(numstr), NULL, 10);
+        }
+    }
+    Py_DECREF(numstr);
+    *next_idx_ptr = idx;
+    return rval;
+}
+
+static PyObject *
+_match_number_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t start, Py_ssize_t *next_idx_ptr) {
+    /* Read a JSON number from PyUnicode pystr.
+    idx is the index of the first character of the number
+    *next_idx_ptr is a return-by-reference index to the first character after
+        the number.
+
+    Returns a new PyObject representation of that number:
+        PyInt, PyLong, or PyFloat.
+        May return other types if parse_int or parse_float are set
+    */
+    Py_UNICODE *str = PyUnicode_AS_UNICODE(pystr);
+    Py_ssize_t end_idx = PyUnicode_GET_SIZE(pystr) - 1;
+    Py_ssize_t idx = start;
+    int is_float = 0;
+    PyObject *rval;
+    PyObject *numstr;
+
+    /* read a sign if it's there, make sure it's not the end of the string */
+    if (str[idx] == '-') {
+        idx++;
+        if (idx > end_idx) {
+            PyErr_SetNone(PyExc_StopIteration);
+            return NULL;
+        }
+    }
+
+    /* read as many integer digits as we find as long as it doesn't start with 0 */
+    if (str[idx] >= '1' && str[idx] <= '9') {
+        idx++;
+        while (idx <= end_idx && str[idx] >= '0' && str[idx] <= '9') idx++;
+    }
+    /* if it starts with 0 we only expect one integer digit */
+    else if (str[idx] == '0') {
+        idx++;
+    }
+    /* no integer digits, error */
+    else {
+        PyErr_SetNone(PyExc_StopIteration);
+        return NULL;
+    }
+
+    /* if the next char is '.' followed by a digit then read all float digits */
+    if (idx < end_idx && str[idx] == '.' && str[idx + 1] >= '0' && str[idx + 1] <= '9') {
+        is_float = 1;
+        idx += 2;
+        while (idx < end_idx && str[idx] >= '0' && str[idx] <= '9') idx++;
+    }
+
+    /* if the next char is 'e' or 'E' then maybe read the exponent (or backtrack) */
+    if (idx < end_idx && (str[idx] == 'e' || str[idx] == 'E')) {
+        Py_ssize_t e_start = idx;
+        idx++;
+
+        /* read an exponent sign if present */
+        if (idx < end_idx && (str[idx] == '-' || str[idx] == '+')) idx++;
+
+        /* read all digits */
+        while (idx <= end_idx && str[idx] >= '0' && str[idx] <= '9') idx++;
+
+        /* if we got a digit, then parse as float. if not, backtrack */
+        if (str[idx - 1] >= '0' && str[idx - 1] <= '9') {
+            is_float = 1;
+        }
+        else {
+            idx = e_start;
+        }
+    }
+
+    /* copy the section we determined to be a number */
+    numstr = PyUnicode_FromUnicode(&str[start], idx - start);
+    if (numstr == NULL)
+        return NULL;
+    if (is_float) {
+        /* parse as a float using a fast path if available, otherwise call user defined method */
+        if (s->parse_float != (PyObject *)&PyFloat_Type) {
+            rval = PyObject_CallFunctionObjArgs(s->parse_float, numstr, NULL);
+        }
+        else {
+            rval = PyFloat_FromString(numstr, NULL);
+        }
+    }
+    else {
+        /* no fast path for unicode -> int, just call */
+        rval = PyObject_CallFunctionObjArgs(s->parse_int, numstr, NULL);
+    }
+    Py_DECREF(numstr);
+    *next_idx_ptr = idx;
+    return rval;
+}
+
+static PyObject *
+scan_once_str(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr)
+{
+    /* Read one JSON term (of any kind) from PyString pystr.
+    idx is the index of the first character of the term
+    *next_idx_ptr is a return-by-reference index to the first character after
+        the number.
+
+    Returns a new PyObject representation of the term.
+    */
+    char *str = PyString_AS_STRING(pystr);
+    Py_ssize_t length = PyString_GET_SIZE(pystr);
+    if (idx >= length) {
+        PyErr_SetNone(PyExc_StopIteration);
+        return NULL;
+    }
+    switch (str[idx]) {
+        case '"':
+            /* string */
+            return scanstring_str(pystr, idx + 1,
+                PyString_AS_STRING(s->encoding),
+                PyObject_IsTrue(s->strict),
+                next_idx_ptr);
+        case '{':
+            /* object */
+            return _parse_object_str(s, pystr, idx + 1, next_idx_ptr);
+        case '[':
+            /* array */
+            return _parse_array_str(s, pystr, idx + 1, next_idx_ptr);
+        case 'n':
+            /* null */
+            if ((idx + 3 < length) && str[idx + 1] == 'u' && str[idx + 2] == 'l' && str[idx + 3] == 'l') {
+                Py_INCREF(Py_None);
+                *next_idx_ptr = idx + 4;
+                return Py_None;
+            }
+            break;
+        case 't':
+            /* true */
+            if ((idx + 3 < length) && str[idx + 1] == 'r' && str[idx + 2] == 'u' && str[idx + 3] == 'e') {
+                Py_INCREF(Py_True);
+                *next_idx_ptr = idx + 4;
+                return Py_True;
+            }
+            break;
+        case 'f':
+            /* false */
+            if ((idx + 4 < length) && str[idx + 1] == 'a' && str[idx + 2] == 'l' && str[idx + 3] == 's' && str[idx + 4] == 'e') {
+                Py_INCREF(Py_False);
+                *next_idx_ptr = idx + 5;
+                return Py_False;
+            }
+            break;
+        case 'N':
+            /* NaN */
+            if ((idx + 2 < length) && str[idx + 1] == 'a' && str[idx + 2] == 'N') {
+                return _parse_constant(s, "NaN", idx, next_idx_ptr);
+            }
+            break;
+        case 'I':
+            /* Infinity */
+            if ((idx + 7 < length) && str[idx + 1] == 'n' && str[idx + 2] == 'f' && str[idx + 3] == 'i' && str[idx + 4] == 'n' && str[idx + 5] == 'i' && str[idx + 6] == 't' && str[idx + 7] == 'y') {
+                return _parse_constant(s, "Infinity", idx, next_idx_ptr);
+            }
+            break;
+        case '-':
+            /* -Infinity */
+            if ((idx + 8 < length) && str[idx + 1] == 'I' && str[idx + 2] == 'n' && str[idx + 3] == 'f' && str[idx + 4] == 'i' && str[idx + 5] == 'n' && str[idx + 6] == 'i' && str[idx + 7] == 't' && str[idx + 8] == 'y') {
+                return _parse_constant(s, "-Infinity", idx, next_idx_ptr);
+            }
+            break;
+    }
+    /* Didn't find a string, object, array, or named constant. Look for a number. */
+    return _match_number_str(s, pystr, idx, next_idx_ptr);
+}
+
+static PyObject *
+scan_once_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_t *next_idx_ptr)
+{
+    /* Read one JSON term (of any kind) from PyUnicode pystr.
+    idx is the index of the first character of the term
+    *next_idx_ptr is a return-by-reference index to the first character after
+        the number.
+
+    Returns a new PyObject representation of the term.
+    */
+    Py_UNICODE *str = PyUnicode_AS_UNICODE(pystr);
+    Py_ssize_t length = PyUnicode_GET_SIZE(pystr);
+    if (idx >= length) {
+        PyErr_SetNone(PyExc_StopIteration);
+        return NULL;
+    }
+    switch (str[idx]) {
+        case '"':
+            /* string */
+            return scanstring_unicode(pystr, idx + 1,
+                PyObject_IsTrue(s->strict),
+                next_idx_ptr);
+        case '{':
+            /* object */
+            return _parse_object_unicode(s, pystr, idx + 1, next_idx_ptr);
+        case '[':
+            /* array */
+            return _parse_array_unicode(s, pystr, idx + 1, next_idx_ptr);
+        case 'n':
+            /* null */
+            if ((idx + 3 < length) && str[idx + 1] == 'u' && str[idx + 2] == 'l' && str[idx + 3] == 'l') {
+                Py_INCREF(Py_None);
+                *next_idx_ptr = idx + 4;
+                return Py_None;
+            }
+            break;
+        case 't':
+            /* true */
+            if ((idx + 3 < length) && str[idx + 1] == 'r' && str[idx + 2] == 'u' && str[idx + 3] == 'e') {
+                Py_INCREF(Py_True);
+                *next_idx_ptr = idx + 4;
+                return Py_True;
+            }
+            break;
+        case 'f':
+            /* false */
+            if ((idx + 4 < length) && str[idx + 1] == 'a' && str[idx + 2] == 'l' && str[idx + 3] == 's' && str[idx + 4] == 'e') {
+                Py_INCREF(Py_False);
+                *next_idx_ptr = idx + 5;
+                return Py_False;
+            }
+            break;
+        case 'N':
+            /* NaN */
+            if ((idx + 2 < length) && str[idx + 1] == 'a' && str[idx + 2] == 'N') {
+                return _parse_constant(s, "NaN", idx, next_idx_ptr);
+            }
+            break;
+        case 'I':
+            /* Infinity */
+            if ((idx + 7 < length) && str[idx + 1] == 'n' && str[idx + 2] == 'f' && str[idx + 3] == 'i' && str[idx + 4] == 'n' && str[idx + 5] == 'i' && str[idx + 6] == 't' && str[idx + 7] == 'y') {
+                return _parse_constant(s, "Infinity", idx, next_idx_ptr);
+            }
+            break;
+        case '-':
+            /* -Infinity */
+            if ((idx + 8 < length) && str[idx + 1] == 'I' && str[idx + 2] == 'n' && str[idx + 3] == 'f' && str[idx + 4] == 'i' && str[idx + 5] == 'n' && str[idx + 6] == 'i' && str[idx + 7] == 't' && str[idx + 8] == 'y') {
+                return _parse_constant(s, "-Infinity", idx, next_idx_ptr);
+            }
+            break;
+    }
+    /* Didn't find a string, object, array, or named constant. Look for a number. */
+    return _match_number_unicode(s, pystr, idx, next_idx_ptr);
+}
+
+static PyObject *
+scanner_call(PyObject *self, PyObject *args, PyObject *kwds)
+{
+    /* Python callable interface to scan_once_{str,unicode} */
+    PyObject *pystr;
+    PyObject *rval;
+    Py_ssize_t idx;
+    Py_ssize_t next_idx = -1;
+    static char *kwlist[] = {"string", "idx", NULL};
+    PyScannerObject *s;
+    assert(PyScanner_Check(self));
+    s = (PyScannerObject *)self;
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "OO&:scan_once", kwlist, &pystr, _convertPyInt_AsSsize_t, &idx))
+        return NULL;
+
+    if (PyString_Check(pystr)) {
+        rval = scan_once_str(s, pystr, idx, &next_idx);
+    }
+    else if (PyUnicode_Check(pystr)) {
+        rval = scan_once_unicode(s, pystr, idx, &next_idx);
+    }
+    else {
+        PyErr_Format(PyExc_TypeError,
+                 "first argument must be a string, not %.80s",
+                 Py_TYPE(pystr)->tp_name);
+        return NULL;
+    }
+    return _build_rval_index_tuple(rval, next_idx);
+}
+
+static PyObject *
+scanner_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
+{
+    PyScannerObject *s;
+    s = (PyScannerObject *)type->tp_alloc(type, 0);
+    if (s != NULL) {
+        s->encoding = NULL;
+        s->strict = NULL;
+        s->object_hook = NULL;
+        s->parse_float = NULL;
+        s->parse_int = NULL;
+        s->parse_constant = NULL;
+    }
+    return (PyObject *)s;
+}
+
+static int
+scanner_init(PyObject *self, PyObject *args, PyObject *kwds)
+{
+    /* Initialize Scanner object */
+    PyObject *ctx;
+    static char *kwlist[] = {"context", NULL};
+    PyScannerObject *s;
+
+    assert(PyScanner_Check(self));
+    s = (PyScannerObject *)self;
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "O:make_scanner", kwlist, &ctx))
+        return -1;
+
+    /* PyString_AS_STRING is used on encoding */
+    s->encoding = PyObject_GetAttrString(ctx, "encoding");
+    if (s->encoding == Py_None) {
+        Py_DECREF(Py_None);
+        s->encoding = PyString_InternFromString(DEFAULT_ENCODING);
+    }
+    else if (PyUnicode_Check(s->encoding)) {
+        PyObject *tmp = PyUnicode_AsEncodedString(s->encoding, NULL, NULL);
+        Py_DECREF(s->encoding);
+        s->encoding = tmp;
+    }
+    if (s->encoding == NULL || !PyString_Check(s->encoding))
+        goto bail;
+
+    /* All of these will fail "gracefully" so we don't need to verify them */
+    s->strict = PyObject_GetAttrString(ctx, "strict");
+    if (s->strict == NULL)
+        goto bail;
+    s->object_hook = PyObject_GetAttrString(ctx, "object_hook");
+    if (s->object_hook == NULL)
+        goto bail;
+    s->parse_float = PyObject_GetAttrString(ctx, "parse_float");
+    if (s->parse_float == NULL)
+        goto bail;
+    s->parse_int = PyObject_GetAttrString(ctx, "parse_int");
+    if (s->parse_int == NULL)
+        goto bail;
+    s->parse_constant = PyObject_GetAttrString(ctx, "parse_constant");
+    if (s->parse_constant == NULL)
+        goto bail;
+
+    return 0;
+
+bail:
+    Py_CLEAR(s->encoding);
+    Py_CLEAR(s->strict);
+    Py_CLEAR(s->object_hook);
+    Py_CLEAR(s->parse_float);
+    Py_CLEAR(s->parse_int);
+    Py_CLEAR(s->parse_constant);
+    return -1;
+}
+
+PyDoc_STRVAR(scanner_doc, "JSON scanner object");
+
+static
+PyTypeObject PyScannerType = {
+    PyObject_HEAD_INIT(NULL)
+    0,                    /* tp_internal */
+    "simplejson._speedups.Scanner",       /* tp_name */
+    sizeof(PyScannerObject), /* tp_basicsize */
+    0,                    /* tp_itemsize */
+    scanner_dealloc, /* tp_dealloc */
+    0,                    /* tp_print */
+    0,                    /* tp_getattr */
+    0,                    /* tp_setattr */
+    0,                    /* tp_compare */
+    0,                    /* tp_repr */
+    0,                    /* tp_as_number */
+    0,                    /* tp_as_sequence */
+    0,                    /* tp_as_mapping */
+    0,                    /* tp_hash */
+    scanner_call,         /* tp_call */
+    0,                    /* tp_str */
+    0,/* PyObject_GenericGetAttr, */                    /* tp_getattro */
+    0,/* PyObject_GenericSetAttr, */                    /* tp_setattro */
+    0,                    /* tp_as_buffer */
+    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,   /* tp_flags */
+    scanner_doc,          /* tp_doc */
+    scanner_traverse,                    /* tp_traverse */
+    scanner_clear,                    /* tp_clear */
+    0,                    /* tp_richcompare */
+    0,                    /* tp_weaklistoffset */
+    0,                    /* tp_iter */
+    0,                    /* tp_iternext */
+    0,                    /* tp_methods */
+    scanner_members,                    /* tp_members */
+    0,                    /* tp_getset */
+    0,                    /* tp_base */
+    0,                    /* tp_dict */
+    0,                    /* tp_descr_get */
+    0,                    /* tp_descr_set */
+    0,                    /* tp_dictoffset */
+    scanner_init,                    /* tp_init */
+    0,/* PyType_GenericAlloc, */        /* tp_alloc */
+    scanner_new,          /* tp_new */
+    0,/* PyObject_GC_Del, */              /* tp_free */
+};
+
+static PyObject *
+encoder_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
+{
+    PyEncoderObject *s;
+    s = (PyEncoderObject *)type->tp_alloc(type, 0);
+    if (s != NULL) {
+        s->markers = NULL;
+        s->defaultfn = NULL;
+        s->encoder = NULL;
+        s->indent = NULL;
+        s->key_separator = NULL;
+        s->item_separator = NULL;
+        s->sort_keys = NULL;
+        s->skipkeys = NULL;
+    }
+    return (PyObject *)s;
+}
+
+static int
+encoder_init(PyObject *self, PyObject *args, PyObject *kwds)
+{
+    /* initialize Encoder object */
+    static char *kwlist[] = {"markers", "default", "encoder", "indent", "key_separator", "item_separator", "sort_keys", "skipkeys", "allow_nan", NULL};
+
+    PyEncoderObject *s;
+    PyObject *allow_nan;
+
+    assert(PyEncoder_Check(self));
+    s = (PyEncoderObject *)self;
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "OOOOOOOOO:make_encoder", kwlist,
+        &s->markers, &s->defaultfn, &s->encoder, &s->indent, &s->key_separator, &s->item_separator, &s->sort_keys, &s->skipkeys, &allow_nan))
+        return -1;
+
+    Py_INCREF(s->markers);
+    Py_INCREF(s->defaultfn);
+    Py_INCREF(s->encoder);
+    Py_INCREF(s->indent);
+    Py_INCREF(s->key_separator);
+    Py_INCREF(s->item_separator);
+    Py_INCREF(s->sort_keys);
+    Py_INCREF(s->skipkeys);
+    s->fast_encode = (PyCFunction_Check(s->encoder) && PyCFunction_GetFunction(s->encoder) == (PyCFunction)py_encode_basestring_ascii);
+    s->allow_nan = PyObject_IsTrue(allow_nan);
+    return 0;
+}
+
+static PyObject *
+encoder_call(PyObject *self, PyObject *args, PyObject *kwds)
+{
+    /* Python callable interface to encode_listencode_obj */
+    static char *kwlist[] = {"obj", "_current_indent_level", NULL};
+    PyObject *obj;
+    PyObject *rval;
+    Py_ssize_t indent_level;
+    PyEncoderObject *s;
+    assert(PyEncoder_Check(self));
+    s = (PyEncoderObject *)self;
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "OO&:_iterencode", kwlist,
+        &obj, _convertPyInt_AsSsize_t, &indent_level))
+        return NULL;
+    rval = PyList_New(0);
+    if (rval == NULL)
+        return NULL;
+    if (encoder_listencode_obj(s, rval, obj, indent_level)) {
+        Py_DECREF(rval);
+        return NULL;
+    }
+    return rval;
+}
+
+static PyObject *
+_encoded_const(PyObject *obj)
+{
+    /* Return the JSON string representation of None, True, False */
+    if (obj == Py_None) {
+        static PyObject *s_null = NULL;
+        if (s_null == NULL) {
+            s_null = PyString_InternFromString("null");
+        }
+        Py_INCREF(s_null);
+        return s_null;
+    }
+    else if (obj == Py_True) {
+        static PyObject *s_true = NULL;
+        if (s_true == NULL) {
+            s_true = PyString_InternFromString("true");
+        }
+        Py_INCREF(s_true);
+        return s_true;
+    }
+    else if (obj == Py_False) {
+        static PyObject *s_false = NULL;
+        if (s_false == NULL) {
+            s_false = PyString_InternFromString("false");
+        }
+        Py_INCREF(s_false);
+        return s_false;
+    }
+    else {
+        PyErr_SetString(PyExc_ValueError, "not a const");
+        return NULL;
+    }
+}
+
+static PyObject *
+encoder_encode_float(PyEncoderObject *s, PyObject *obj)
+{
+    /* Return the JSON representation of a PyFloat */
+    double i = PyFloat_AS_DOUBLE(obj);
+    if (!Py_IS_FINITE(i)) {
+        if (!s->allow_nan) {
+            PyErr_SetString(PyExc_ValueError, "Out of range float values are not JSON compliant");
+            return NULL;
+        }
+        if (i > 0) {
+            return PyString_FromString("Infinity");
+        }
+        else if (i < 0) {
+            return PyString_FromString("-Infinity");
+        }
+        else {
+            return PyString_FromString("NaN");
+        }
+    }
+    /* Use a better float format here? */
+    return PyObject_Repr(obj);
+}
+
+static PyObject *
+encoder_encode_string(PyEncoderObject *s, PyObject *obj)
+{
+    /* Return the JSON representation of a string */
+    if (s->fast_encode)
+        return py_encode_basestring_ascii(NULL, obj);
+    else
+        return PyObject_CallFunctionObjArgs(s->encoder, obj, NULL);
+}
+
+static int
+_steal_list_append(PyObject *lst, PyObject *stolen)
+{
+    /* Append stolen and then decrement its reference count */
+    int rval = PyList_Append(lst, stolen);
+    Py_DECREF(stolen);
+    return rval;
+}
+
+static int
+encoder_listencode_obj(PyEncoderObject *s, PyObject *rval, PyObject *obj, Py_ssize_t indent_level)
+{
+    /* Encode Python object obj to a JSON term, rval is a PyList */
+    PyObject *newobj;
+    int rv;
+
+    if (obj == Py_None || obj == Py_True || obj == Py_False) {
+        PyObject *cstr = _encoded_const(obj);
+        if (cstr == NULL)
+            return -1;
+        return _steal_list_append(rval, cstr);
+    }
+    else if (PyString_Check(obj) || PyUnicode_Check(obj))
+    {
+        PyObject *encoded = encoder_encode_string(s, obj);
+        if (encoded == NULL)
+            return -1;
+        return _steal_list_append(rval, encoded);
+    }
+    else if (PyInt_Check(obj) || PyLong_Check(obj)) {
+        PyObject *encoded = PyObject_Str(obj);
+        if (encoded == NULL)
+            return -1;
+        return _steal_list_append(rval, encoded);
+    }
+    else if (PyFloat_Check(obj)) {
+        PyObject *encoded = encoder_encode_float(s, obj);
+        if (encoded == NULL)
+            return -1;
+        return _steal_list_append(rval, encoded);
+    }
+    else if (PyList_Check(obj) || PyTuple_Check(obj)) {
+        return encoder_listencode_list(s, rval, obj, indent_level);
+    }
+    else if (PyDict_Check(obj)) {
+        return encoder_listencode_dict(s, rval, obj, indent_level);
+    }
+    else {
+        PyObject *ident = NULL;
+        if (s->markers != Py_None) {
+            int has_key;
+            ident = PyLong_FromVoidPtr(obj);
+            if (ident == NULL)
+                return -1;
+            has_key = PyDict_Contains(s->markers, ident);
+            if (has_key) {
+                if (has_key != -1)
+                    PyErr_SetString(PyExc_ValueError, "Circular reference detected");
+                Py_DECREF(ident);
+                return -1;
+            }
+            if (PyDict_SetItem(s->markers, ident, obj)) {
+                Py_DECREF(ident);
+                return -1;
+            }
+        }
+        newobj = PyObject_CallFunctionObjArgs(s->defaultfn, obj, NULL);
+        if (newobj == NULL) {
+            Py_XDECREF(ident);
+            return -1;
+        }
+        rv = encoder_listencode_obj(s, rval, newobj, indent_level);
+        Py_DECREF(newobj);
+        if (rv) {
+            Py_XDECREF(ident);
+            return -1;
+        }
+        if (ident != NULL) {
+            if (PyDict_DelItem(s->markers, ident)) {
+                Py_XDECREF(ident);
+                return -1;
+            }
+            Py_XDECREF(ident);
+        }
+        return rv;
+    }
+}
+
+static int
+encoder_listencode_dict(PyEncoderObject *s, PyObject *rval, PyObject *dct, Py_ssize_t indent_level)
+{
+    /* Encode Python dict dct a JSON term, rval is a PyList */
+    static PyObject *open_dict = NULL;
+    static PyObject *close_dict = NULL;
+    static PyObject *empty_dict = NULL;
+    PyObject *kstr = NULL;
+    PyObject *ident = NULL;
+    PyObject *key, *value;
+    Py_ssize_t pos;
+    int skipkeys;
+    Py_ssize_t idx;
+
+    if (open_dict == NULL || close_dict == NULL || empty_dict == NULL) {
+        open_dict = PyString_InternFromString("{");
+        close_dict = PyString_InternFromString("}");
+        empty_dict = PyString_InternFromString("{}");
+        if (open_dict == NULL || close_dict == NULL || empty_dict == NULL)
+            return -1;
+    }
+    if (PyDict_Size(dct) == 0)
+        return PyList_Append(rval, empty_dict);
+
+    if (s->markers != Py_None) {
+        int has_key;
+        ident = PyLong_FromVoidPtr(dct);
+        if (ident == NULL)
+            goto bail;
+        has_key = PyDict_Contains(s->markers, ident);
+        if (has_key) {
+            if (has_key != -1)
+                PyErr_SetString(PyExc_ValueError, "Circular reference detected");
+            goto bail;
+        }
+        if (PyDict_SetItem(s->markers, ident, dct)) {
+            goto bail;
+        }
+    }
+
+    if (PyList_Append(rval, open_dict))
+        goto bail;
+
+    if (s->indent != Py_None) {
+        /* TODO: DOES NOT RUN */
+        indent_level += 1;
+        /*
+            newline_indent = '\n' + (' ' * (_indent * _current_indent_level))
+            separator = _item_separator + newline_indent
+            buf += newline_indent
+        */
+    }
+
+    /* TODO: C speedup not implemented for sort_keys */
+
+    pos = 0;
+    skipkeys = PyObject_IsTrue(s->skipkeys);
+    idx = 0;
+    while (PyDict_Next(dct, &pos, &key, &value)) {
+        PyObject *encoded;
+
+        if (PyString_Check(key) || PyUnicode_Check(key)) {
+            Py_INCREF(key);
+            kstr = key;
+        }
+        else if (PyFloat_Check(key)) {
+            kstr = encoder_encode_float(s, key);
+            if (kstr == NULL)
+                goto bail;
+        }
+        else if (PyInt_Check(key) || PyLong_Check(key)) {
+            kstr = PyObject_Str(key);
+            if (kstr == NULL)
+                goto bail;
+        }
+        else if (key == Py_True || key == Py_False || key == Py_None) {
+            kstr = _encoded_const(key);
+            if (kstr == NULL)
+                goto bail;
+        }
+        else if (skipkeys) {
+            continue;
+        }
+        else {
+            /* TODO: include repr of key */
+            PyErr_SetString(PyExc_ValueError, "keys must be a string");
+            goto bail;
+        }
+
+        if (idx) {
+            if (PyList_Append(rval, s->item_separator))
+                goto bail;
+        }
+
+        encoded = encoder_encode_string(s, kstr);
+        Py_CLEAR(kstr);
+        if (encoded == NULL)
+            goto bail;
+        if (PyList_Append(rval, encoded)) {
+            Py_DECREF(encoded);
+            goto bail;
+        }
+        Py_DECREF(encoded);
+        if (PyList_Append(rval, s->key_separator))
+            goto bail;
+        if (encoder_listencode_obj(s, rval, value, indent_level))
+            goto bail;
+        idx += 1;
+    }
+    if (ident != NULL) {
+        if (PyDict_DelItem(s->markers, ident))
+            goto bail;
+        Py_CLEAR(ident);
+    }
+    if (s->indent != Py_None) {
+        /* TODO: DOES NOT RUN */
+        indent_level -= 1;
+        /*
+            yield '\n' + (' ' * (_indent * _current_indent_level))
+        */
+    }
+    if (PyList_Append(rval, close_dict))
+        goto bail;
+    return 0;
+
+bail:
+    Py_XDECREF(kstr);
+    Py_XDECREF(ident);
+    return -1;
+}
+
+
+static int
+encoder_listencode_list(PyEncoderObject *s, PyObject *rval, PyObject *seq, Py_ssize_t indent_level)
+{
+    /* Encode Python list seq to a JSON term, rval is a PyList */
+    static PyObject *open_array = NULL;
+    static PyObject *close_array = NULL;
+    static PyObject *empty_array = NULL;
+    PyObject *ident = NULL;
+    PyObject *s_fast = NULL;
+    Py_ssize_t num_items;
+    PyObject **seq_items;
+    Py_ssize_t i;
+
+    if (open_array == NULL || close_array == NULL || empty_array == NULL) {
+        open_array = PyString_InternFromString("[");
+        close_array = PyString_InternFromString("]");
+        empty_array = PyString_InternFromString("[]");
+        if (open_array == NULL || close_array == NULL || empty_array == NULL)
+            return -1;
+    }
+    ident = NULL;
+    s_fast = PySequence_Fast(seq, "_iterencode_list needs a sequence");
+    if (s_fast == NULL)
+        return -1;
+    num_items = PySequence_Fast_GET_SIZE(s_fast);
+    if (num_items == 0) {
+        Py_DECREF(s_fast);
+        return PyList_Append(rval, empty_array);
+    }
+
+    if (s->markers != Py_None) {
+        int has_key;
+        ident = PyLong_FromVoidPtr(seq);
+        if (ident == NULL)
+            goto bail;
+        has_key = PyDict_Contains(s->markers, ident);
+        if (has_key) {
+            if (has_key != -1)
+                PyErr_SetString(PyExc_ValueError, "Circular reference detected");
+            goto bail;
+        }
+        if (PyDict_SetItem(s->markers, ident, seq)) {
+            goto bail;
+        }
+    }
+
+    seq_items = PySequence_Fast_ITEMS(s_fast);
+    if (PyList_Append(rval, open_array))
+        goto bail;
+    if (s->indent != Py_None) {
+        /* TODO: DOES NOT RUN */
+        indent_level += 1;
+        /*
+            newline_indent = '\n' + (' ' * (_indent * _current_indent_level))
+            separator = _item_separator + newline_indent
+            buf += newline_indent
+        */
+    }
+    for (i = 0; i < num_items; i++) {
+        PyObject *obj = seq_items[i];
+        if (i) {
+            if (PyList_Append(rval, s->item_separator))
+                goto bail;
+        }
+        if (encoder_listencode_obj(s, rval, obj, indent_level))
+            goto bail;
+    }
+    if (ident != NULL) {
+        if (PyDict_DelItem(s->markers, ident))
+            goto bail;
+        Py_CLEAR(ident);
+    }
+    if (s->indent != Py_None) {
+        /* TODO: DOES NOT RUN */
+        indent_level -= 1;
+        /*
+            yield '\n' + (' ' * (_indent * _current_indent_level))
+        */
+    }
+    if (PyList_Append(rval, close_array))
+        goto bail;
+    Py_DECREF(s_fast);
+    return 0;
+
+bail:
+    Py_XDECREF(ident);
+    Py_DECREF(s_fast);
+    return -1;
+}
+
+static void
+encoder_dealloc(PyObject *self)
+{
+    /* Deallocate Encoder */
+    encoder_clear(self);
+    Py_TYPE(self)->tp_free(self);
+}
+
+static int
+encoder_traverse(PyObject *self, visitproc visit, void *arg)
+{
+    PyEncoderObject *s;
+    assert(PyEncoder_Check(self));
+    s = (PyEncoderObject *)self;
+    Py_VISIT(s->markers);
+    Py_VISIT(s->defaultfn);
+    Py_VISIT(s->encoder);
+    Py_VISIT(s->indent);
+    Py_VISIT(s->key_separator);
+    Py_VISIT(s->item_separator);
+    Py_VISIT(s->sort_keys);
+    Py_VISIT(s->skipkeys);
+    return 0;
+}
+
+static int
+encoder_clear(PyObject *self)
+{
+    /* Deallocate Encoder */
+    PyEncoderObject *s;
+    assert(PyEncoder_Check(self));
+    s = (PyEncoderObject *)self;
+    Py_CLEAR(s->markers);
+    Py_CLEAR(s->defaultfn);
+    Py_CLEAR(s->encoder);
+    Py_CLEAR(s->indent);
+    Py_CLEAR(s->key_separator);
+    Py_CLEAR(s->item_separator);
+    Py_CLEAR(s->sort_keys);
+    Py_CLEAR(s->skipkeys);
+    return 0;
+}
+
+PyDoc_STRVAR(encoder_doc, "_iterencode(obj, _current_indent_level) -> iterable");
+
+static
+PyTypeObject PyEncoderType = {
+    PyObject_HEAD_INIT(NULL)
+    0,                    /* tp_internal */
+    "simplejson._speedups.Encoder",       /* tp_name */
+    sizeof(PyEncoderObject), /* tp_basicsize */
+    0,                    /* tp_itemsize */
+    encoder_dealloc, /* tp_dealloc */
+    0,                    /* tp_print */
+    0,                    /* tp_getattr */
+    0,                    /* tp_setattr */
+    0,                    /* tp_compare */
+    0,                    /* tp_repr */
+    0,                    /* tp_as_number */
+    0,                    /* tp_as_sequence */
+    0,                    /* tp_as_mapping */
+    0,                    /* tp_hash */
+    encoder_call,         /* tp_call */
+    0,                    /* tp_str */
+    0,                    /* tp_getattro */
+    0,                    /* tp_setattro */
+    0,                    /* tp_as_buffer */
+    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,   /* tp_flags */
+    encoder_doc,          /* tp_doc */
+    encoder_traverse,     /* tp_traverse */
+    encoder_clear,        /* tp_clear */
+    0,                    /* tp_richcompare */
+    0,                    /* tp_weaklistoffset */
+    0,                    /* tp_iter */
+    0,                    /* tp_iternext */
+    0,                    /* tp_methods */
+    encoder_members,      /* tp_members */
+    0,                    /* tp_getset */
+    0,                    /* tp_base */
+    0,                    /* tp_dict */
+    0,                    /* tp_descr_get */
+    0,                    /* tp_descr_set */
+    0,                    /* tp_dictoffset */
+    encoder_init,         /* tp_init */
+    0,                    /* tp_alloc */
+    encoder_new,          /* tp_new */
+    0,                    /* tp_free */
+};
+
 static PyMethodDef speedups_methods[] = {
-    DEFN(encode_basestring_ascii, METH_O),
-    {}
+    {"encode_basestring_ascii",
+        (PyCFunction)py_encode_basestring_ascii,
+        METH_O,
+        pydoc_encode_basestring_ascii},
+    {"scanstring",
+        (PyCFunction)py_scanstring,
+        METH_VARARGS,
+        pydoc_scanstring},
+    {NULL, NULL, 0, NULL}
 };
-#undef DEFN
+PyDoc_STRVAR(module_doc,
+"simplejson speedups\n");
+
 void
 init_speedups(void)
 {
     PyObject *m;
-    m = Py_InitModule4("_speedups", speedups_methods, NULL, NULL, PYTHON_API_VERSION);
+    PyScannerType.tp_new = PyType_GenericNew;
+    if (PyType_Ready(&PyScannerType) < 0)
+        return;
+    PyEncoderType.tp_new = PyType_GenericNew;
+    if (PyType_Ready(&PyEncoderType) < 0)
+        return;
+    m = Py_InitModule3("_speedups", speedups_methods, module_doc);
+    Py_INCREF((PyObject*)&PyScannerType);
+    PyModule_AddObject(m, "make_scanner", (PyObject*)&PyScannerType);
+    Py_INCREF((PyObject*)&PyEncoderType);
+    PyModule_AddObject(m, "make_encoder", (PyObject*)&PyEncoderType);
 }
Modified: trunk/pywikipedia/simplejson/decoder.py
===================================================================
--- trunk/pywikipedia/simplejson/decoder.py	2009-08-07 17:25:10 UTC (rev 7129)
+++ trunk/pywikipedia/simplejson/decoder.py	2009-08-08 00:42:34 UTC (rev 7130)
@@ -1,15 +1,20 @@
+"""Implementation of JSONDecoder
 """
-Implementation of JSONDecoder
-"""
 import re
+import sys
+import struct
-from simplejson.scanner import Scanner, pattern
+from simplejson.scanner import make_scanner
+try:
+    from simplejson._speedups import scanstring as c_scanstring
+except ImportError:
+    c_scanstring = None
+__all__ = ['JSONDecoder']
+
 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]
@@ -18,6 +23,7 @@
NaN, PosInf, NegInf = _floatconstants()
+
 def linecol(doc, pos):
     lineno = doc.count('\n', 0, pos) + 1
     if lineno == 1:
@@ -26,38 +32,29 @@
         colno = pos - doc.rindex('\n', 0, pos)
     return lineno, colno
+
 def errmsg(msg, doc, pos, end=None):
+    # Note that this function is called from _speedups
     lineno, colno = linecol(doc, pos)
     if end is None:
-        return '%s: line %d column %d (char %d)' % (msg, lineno, colno, pos)
+        #fmt = '{0}: line {1} column {2} (char {3})'
+        #return fmt.format(msg, lineno, colno, pos)
+        fmt = '%s: line %d column %d (char %d)'
+        return fmt % (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)
+    #fmt = '{0}: line {1} column {2} - line {3} column {4} (char {5} - {6})'
+    #return fmt.format(msg, lineno, colno, endlineno, endcolno, pos, end)
+    fmt = '%s: line %d column %d - line %d column %d (char %d - %d)'
+    return fmt % (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)
+STRINGCHUNK = re.compile(r'(.*?)(["\\x00-\x1f])', FLAGS)
 BACKSLASH = {
     '"': u'"', '\': u'\', '/': u'/',
     'b': u'\b', 'f': u'\f', 'n': u'\n', 'r': u'\r', 't': u'\t',
@@ -65,7 +62,15 @@
DEFAULT_ENCODING = "utf-8"
-def scanstring(s, end, encoding=None, _b=BACKSLASH, _m=STRINGCHUNK.match):
+def py_scanstring(s, end, encoding=None, strict=True, _b=BACKSLASH, _m=STRINGCHUNK.match):
+    """Scan the string s for a JSON string. End is the index of the
+    character in s after the quote that started the JSON string.
+    Unescapes all valid JSON string escape sequences and raises ValueError
+    on attempt to decode an invalid string. If strict is False then literal
+    control characters are allowed in the string.
+    
+    Returns a tuple of the decoded string and the index of the character in s
+    after the end quote."""
     if encoding is None:
         encoding = DEFAULT_ENCODING
     chunks = []
@@ -78,127 +83,184 @@
                 errmsg("Unterminated string starting at", s, begin))
         end = chunk.end()
         content, terminator = chunk.groups()
+        # Content is contains zero or more unescaped string characters
         if content:
             if not isinstance(content, unicode):
                 content = unicode(content, encoding)
             _append(content)
+        # Terminator is the end of string, a literal control character,
+        # or a backslash denoting that an escape sequence follows
         if terminator == '"':
             break
+        elif terminator != '\':
+            if strict:
+                msg = "Invalid control character %r at" % (terminator,)
+                #msg = "Invalid control character {0!r} at".format(terminator)
+                raise ValueError(errmsg(msg, s, end))
+            else:
+                _append(terminator)
+                continue
         try:
             esc = s[end]
         except IndexError:
             raise ValueError(
                 errmsg("Unterminated string starting at", s, begin))
+        # If not a unicode escape sequence, must be in the lookup table
         if esc != 'u':
             try:
-                m = _b[esc]
+                char = _b[esc]
             except KeyError:
-                raise ValueError(
-                    errmsg("Invalid \escape: %r" % (esc,), s, end))
+                msg = "Invalid \escape: " + repr(esc)
+                raise ValueError(errmsg(msg, s, end))
             end += 1
         else:
+            # Unicode escape sequence
             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)
+            next_end = end + 5
+            if len(esc) != 4:
+                msg = "Invalid \uXXXX escape"
+                raise ValueError(errmsg(msg, s, end))
+            uni = int(esc, 16)
+            # Check for surrogate pair on UCS-4 systems
+            if 0xd800 <= uni <= 0xdbff and sys.maxunicode > 65535:
+                msg = "Invalid \uXXXX\uXXXX surrogate pair"
+                if not s[end + 5:end + 7] == '\u':
+                    raise ValueError(errmsg(msg, s, end))
+                esc2 = s[end + 7:end + 11]
+                if len(esc2) != 4:
+                    raise ValueError(errmsg(msg, s, end))
+                uni2 = int(esc2, 16)
+                uni = 0x10000 + (((uni - 0xd800) << 10) | (uni2 - 0xdc00))
+                next_end += 6
+            char = unichr(uni)
+            end = next_end
+        # Append the unescaped character
+        _append(char)
     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)
+# Use speedup if available
+scanstring = c_scanstring or py_scanstring
-def JSONObject(match, context, _w=WHITESPACE.match):
+WHITESPACE = re.compile(r'[ \t\n\r]*', FLAGS)
+WHITESPACE_STR = ' \t\n\r'
+
+def JSONObject((s, end), encoding, strict, scan_once, object_hook, _w=WHITESPACE.match, _ws=WHITESPACE_STR):
     pairs = {}
-    s = match.string
-    end = _w(s, match.end()).end()
+    # Use a slice to prevent IndexError from being raised, the following
+    # check will raise a more specific ValueError if the string is empty
     nextchar = s[end:end + 1]
-    # trivial empty object
-    if nextchar == '}':
-        return pairs, end + 1
+    # Normally we expect nextchar == '"'
     if nextchar != '"':
-        raise ValueError(errmsg("Expecting property name", s, end))
+        if nextchar in _ws:
+            end = _w(s, end).end()
+            nextchar = s[end:end + 1]
+        # Trivial empty object
+        if nextchar == '}':
+            return pairs, end + 1
+        elif 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()
+        key, end = scanstring(s, end, encoding, strict)
+
+        # To skip some function call overhead we optimize the fast paths where
+        # the JSON key separator is ": " or just ":".
         if s[end:end + 1] != ':':
-            raise ValueError(errmsg("Expecting : delimiter", s, end))
-        end = _w(s, end + 1).end()
+            end = _w(s, end).end()
+            if s[end:end + 1] != ':':
+                raise ValueError(errmsg("Expecting : delimiter", s, end))
+
+        end += 1
+
         try:
-            value, end = iterscan(s, idx=end, context=context).next()
+            if s[end] in _ws:
+                end += 1
+                if s[end] in _ws:
+                    end = _w(s, end + 1).end()
+        except IndexError:
+            pass
+
+        try:
+            value, end = scan_once(s, end)
         except StopIteration:
             raise ValueError(errmsg("Expecting object", s, end))
         pairs[key] = value
-        end = _w(s, end).end()
-        nextchar = s[end:end + 1]
+
+        try:
+            nextchar = s[end]
+            if nextchar in _ws:
+                end = _w(s, end + 1).end()
+                nextchar = s[end]
+        except IndexError:
+            nextchar = ''
         end += 1
+
         if nextchar == '}':
             break
-        if nextchar != ',':
+        elif nextchar != ',':
             raise ValueError(errmsg("Expecting , delimiter", s, end - 1))
-        end = _w(s, end).end()
-        nextchar = s[end:end + 1]
+
+        try:
+            nextchar = s[end]
+            if nextchar in _ws:
+                end += 1
+                nextchar = s[end]
+                if nextchar in _ws:
+                    end = _w(s, end + 1).end()
+                    nextchar = s[end]
+        except IndexError:
+            nextchar = ''
+
         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):
+
+def JSONArray((s, end), scan_once, _w=WHITESPACE.match, _ws=WHITESPACE_STR):
     values = []
-    s = match.string
-    end = _w(s, match.end()).end()
-    # look-ahead for trivial empty array
     nextchar = s[end:end + 1]
+    if nextchar in _ws:
+        end = _w(s, end + 1).end()
+        nextchar = s[end:end + 1]
+    # Look-ahead for trivial empty array
     if nextchar == ']':
         return values, end + 1
-    iterscan = JSONScanner.iterscan
+    _append = values.append
     while True:
         try:
-            value, end = iterscan(s, idx=end, context=context).next()
+            value, end = scan_once(s, end)
         except StopIteration:
             raise ValueError(errmsg("Expecting object", s, end))
-        values.append(value)
-        end = _w(s, end).end()
+        _append(value)
         nextchar = s[end:end + 1]
+        if nextchar in _ws:
+            end = _w(s, end + 1).end()
+            nextchar = s[end:end + 1]
         end += 1
         if nextchar == ']':
             break
-        if nextchar != ',':
+        elif nextchar != ',':
             raise ValueError(errmsg("Expecting , delimiter", s, end))
-        end = _w(s, end).end()
+
+        try:
+            if s[end] in _ws:
+                end += 1
+                if s[end] in _ws:
+                    end = _w(s, end + 1).end()
+        except IndexError:
+            pass
+
     return values, end
-pattern(r'[')(JSONArray)
- 
-ANYTHING = [
-    JSONObject,
-    JSONArray,
-    JSONString,
-    JSONConstant,
-    JSONNumber,
-]
-JSONScanner = Scanner(ANYTHING)
-
 class JSONDecoder(object):
-    """
-    Simple JSON http://json.org decoder
+    """Simple JSON http://json.org decoder
-    Performs the following translations in decoding:
-    
+    Performs the following translations in decoding by default:
+
     +---------------+-------------------+
     | JSON          | Python            |
     +===============+===================+
@@ -221,17 +283,15 @@
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``
+    def __init__(self, encoding=None, object_hook=None, parse_float=None,
+            parse_int=None, parse_constant=None, strict=True):
+        """``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``.
@@ -239,14 +299,38 @@
         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).
+
+        ``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. 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. 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.
+
         """
         self.encoding = encoding
         self.object_hook = object_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.scan_once = make_scanner(self)
def decode(self, s, _w=WHITESPACE.match):
-        """
-        Return the Python representation of ``s`` (a ``str`` or ``unicode``
+        """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()
@@ -254,20 +338,17 @@
             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
+    def raw_decode(self, s, idx=0):
+        """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()
+            obj, end = self.scan_once(s, idx)
         except StopIteration:
             raise ValueError("No JSON object could be decoded")
         return obj, end
-
-__all__ = ['JSONDecoder']
Modified: trunk/pywikipedia/simplejson/encoder.py
===================================================================
--- trunk/pywikipedia/simplejson/encoder.py	2009-08-07 17:25:10 UTC (rev 7129)
+++ trunk/pywikipedia/simplejson/encoder.py	2009-08-08 00:42:34 UTC (rev 7130)
@@ -1,17 +1,20 @@
+"""Implementation of JSONEncoder
 """
-Implementation of JSONEncoder
-"""
 import re
+
 try:
-    from simplejson import _speedups
+    from simplejson._speedups import encode_basestring_ascii as c_encode_basestring_ascii
 except ImportError:
-    _speedups = None
+    c_encode_basestring_ascii = None
+try:
+    from simplejson._speedups import make_encoder as c_make_encoder
+except ImportError:
+    c_make_encoder = None
-ESCAPE = re.compile(r'[\x00-\x19\"\b\f\n\r\t]')
-ESCAPE_ASCII = re.compile(r'([\"/]|[^\ -~])')
+ESCAPE = re.compile(r'[\x00-\x1f\"\b\f\n\r\t]')
+ESCAPE_ASCII = re.compile(r'([\"]|[^\ -~])')
+HAS_UTF8 = re.compile(r'[\x80-\xff]')
 ESCAPE_DCT = {
-    # escape all forward slashes to prevent </script> attack
-    '/': '\/',
     '\': '\\',
     '"': '\"',
     '\b': '\b',
@@ -21,40 +24,28 @@
     '\t': '\t',
 }
 for i in range(0x20):
+    #ESCAPE_DCT.setdefault(chr(i), '\u{0:04x}'.format(i))
     ESCAPE_DCT.setdefault(chr(i), '\u%04x' % (i,))
-# assume this produces an infinity on all machines (probably not guaranteed)
+# Assume this produces an infinity on all machines (probably not guaranteed)
 INFINITY = float('1e66666')
+FLOAT_REPR = repr
-def floatstr(o, allow_nan=True):
-    # 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.
+def encode_basestring(s):
+    """Return a JSON representation of a Python string
-    if o != o:
-        text = 'NaN'
-    elif o == INFINITY:
-        text = 'Infinity'
-    elif o == -INFINITY:
-        text = '-Infinity'
-    else:
-        return repr(o)
-
-    if not allow_nan:
-        raise ValueError("Out of range float values are not JSON compliant: %r"
-            % (o,))
-
-    return text
-
-
-def encode_basestring(s):
     """
-    Return a JSON representation of a Python string
-    """
     def replace(match):
         return ESCAPE_DCT[match.group(0)]
     return '"' + ESCAPE.sub(replace, s) + '"'
-def encode_basestring_ascii(s):
+
+def py_encode_basestring_ascii(s):
+    """Return an ASCII-only JSON representation of a Python string
+
+    """
+    if isinstance(s, str) and HAS_UTF8.search(s) is not None:
+        s = s.decode('utf-8')
     def replace(match):
         s = match.group(0)
         try:
@@ -62,27 +53,25 @@
         except KeyError:
             n = ord(s)
             if n < 0x10000:
+                #return '\u{0:04x}'.format(n)
                 return '\u%04x' % (n,)
             else:
                 # surrogate pair
                 n -= 0x10000
                 s1 = 0xd800 | ((n >> 10) & 0x3ff)
                 s2 = 0xdc00 | (n & 0x3ff)
+                #return '\u{0:04x}\u{1:04x}'.format(s1, s2)
                 return '\u%04x\u%04x' % (s1, s2)
     return '"' + str(ESCAPE_ASCII.sub(replace, s)) + '"'
-        
-try:
-    encode_basestring_ascii = _speedups.encode_basestring_ascii
-    _need_utf8 = True
-except AttributeError:
-    _need_utf8 = False
+
+encode_basestring_ascii = c_encode_basestring_ascii or py_encode_basestring_ascii
+
 class JSONEncoder(object):
-    """
-    Extensible JSON http://json.org encoder for Python data structures.
+    """Extensible JSON http://json.org encoder for Python data structures.
Supports the following objects and types by default:
-    
+
     +-------------------+---------------+
     | Python            | JSON          |
     +===================+===============+
@@ -105,35 +94,34 @@
     ``.default()`` method with another method that returns a serializable
     object for ``o`` if possible, otherwise it should call the superclass
     implementation (to raise ``TypeError``).
+
     """
-    __all__ = ['__init__', 'default', 'encode', 'iterencode']
     item_separator = ', '
     key_separator = ': '
     def __init__(self, skipkeys=False, ensure_ascii=True,
             check_circular=True, allow_nan=True, sort_keys=False,
-            indent=None, separators=None, encoding='utf-8'):
-        """
-        Constructor for JSONEncoder, with sensible defaults.
+            indent=None, separators=None, encoding='utf-8', default=None):
+        """Constructor for JSONEncoder, with sensible defaults.
-        If skipkeys is False, then it is a TypeError to attempt
+        If skipkeys is false, then it is a TypeError to attempt
         encoding of keys that are not str, int, long, float or None.  If
         skipkeys is True, such items are simply skipped.
-        If ensure_ascii is True, the output is guaranteed to be str
+        If ensure_ascii is true, the output is guaranteed to be str
         objects with all incoming unicode characters escaped.  If
         ensure_ascii is false, the output will be unicode object.
-        If check_circular is True, then lists, dicts, and custom encoded
+        If check_circular is true, then lists, dicts, and custom encoded
         objects will be checked for circular references during encoding to
         prevent an infinite recursion (which would cause an OverflowError).
         Otherwise, no such check takes place.
-        If allow_nan is True, then NaN, Infinity, and -Infinity will be
+        If allow_nan is true, then NaN, Infinity, and -Infinity will be
         encoded as such.  This behavior is not JSON specification compliant,
         but is consistent with most JavaScript based encoders and decoders.
         Otherwise, it will be a ValueError to encode such floats.
-        If sort_keys is True, then the output of dictionaries will be
+        If sort_keys is true, then the output of dictionaries will be
         sorted by key; this is useful for regression tests to ensure
         that JSON serializations can be compared on a day-to-day basis.
@@ -143,12 +131,17 @@
         None is the most compact representation.
If specified, separators should be a (item_separator, key_separator)
-        tuple. The default is (', ', ': '). To get the most compact JSON
+        tuple.  The default is (', ', ': ').  To get the most compact JSON
         representation you should specify (',', ':') to eliminate whitespace.
+        If specified, default is a function that gets called for objects
+        that can't otherwise be serialized.  It should return a JSON encodable
+        version of the object or raise a ``TypeError``.
+
         If encoding is not None, then all input strings will be
-        transformed into unicode using that encoding prior to JSON-encoding. 
+        transformed into unicode using that encoding prior to JSON-encoding.
         The default is UTF-8.
+
         """
self.skipkeys = skipkeys
@@ -157,15 +150,133 @@
         self.allow_nan = allow_nan
         self.sort_keys = sort_keys
         self.indent = indent
-        self.current_indent_level = 0
         if separators is not None:
             self.item_separator, self.key_separator = separators
+        if default is not None:
+            self.default = default
         self.encoding = encoding
-    def _newline_indent(self):
-        return '\n' + (' ' * (self.indent * self.current_indent_level))
+    def default(self, o):
+        """Implement this method in a subclass such that it returns
+        a serializable object for ``o``, or calls the base implementation
+        (to raise a ``TypeError``).
-    def _iterencode_list(self, lst, markers=None):
+        For example, to support arbitrary iterators, you could
+        implement default like this::
+
+            def default(self, o):
+                try:
+                    iterable = iter(o)
+                except TypeError:
+                    pass
+                else:
+                    return list(iterable)
+                return JSONEncoder.default(self, o)
+
+        """
+        raise TypeError(repr(o) + " is not JSON serializable")
+
+    def encode(self, o):
+        """Return a JSON string representation of a Python data structure.
+
+        >>> JSONEncoder().encode({"foo": ["bar", "baz"]})
+        '{"foo": ["bar", "baz"]}'
+
+        """
+        # This is for extremely simple cases and benchmarks.
+        if isinstance(o, basestring):
+            if isinstance(o, str):
+                _encoding = self.encoding
+                if (_encoding is not None
+                        and not (_encoding == 'utf-8')):
+                    o = o.decode(_encoding)
+            if self.ensure_ascii:
+                return encode_basestring_ascii(o)
+            else:
+                return encode_basestring(o)
+        # This doesn't pass the iterator directly to ''.join() because the
+        # exceptions aren't as detailed.  The list call should be roughly
+        # equivalent to the PySequence_Fast that ''.join() would do.
+        chunks = self.iterencode(o, _one_shot=True)
+        if not isinstance(chunks, (list, tuple)):
+            chunks = list(chunks)
+        return ''.join(chunks)
+
+    def iterencode(self, o, _one_shot=False):
+        """Encode the given object and yield each string
+        representation as available.
+
+        For example::
+
+            for chunk in JSONEncoder().iterencode(bigobject):
+                mysocket.write(chunk)
+
+        """
+        if self.check_circular:
+            markers = {}
+        else:
+            markers = None
+        if self.ensure_ascii:
+            _encoder = encode_basestring_ascii
+        else:
+            _encoder = encode_basestring
+        if self.encoding != 'utf-8':
+            def _encoder(o, _orig_encoder=_encoder, _encoding=self.encoding):
+                if isinstance(o, str):
+                    o = o.decode(_encoding)
+                return _orig_encoder(o)
+
+        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
+
+
+        if _one_shot and c_make_encoder is not None and not self.indent and not self.sort_keys:
+            _iterencode = c_make_encoder(
+                markers, self.default, _encoder, self.indent,
+                self.key_separator, self.item_separator, self.sort_keys,
+                self.skipkeys, self.allow_nan)
+        else:
+            _iterencode = _make_iterencode(
+                markers, self.default, _encoder, self.indent, floatstr,
+                self.key_separator, self.item_separator, self.sort_keys,
+                self.skipkeys, _one_shot)
+        return _iterencode(o, 0)
+
+def _make_iterencode(markers, _default, _encoder, _indent, _floatstr, _key_separator, _item_separator, _sort_keys, _skipkeys, _one_shot,
+        ## HACK: hand-optimized bytecode; turn globals into locals
+        False=False,
+        True=True,
+        ValueError=ValueError,
+        basestring=basestring,
+        dict=dict,
+        float=float,
+        id=id,
+        int=int,
+        isinstance=isinstance,
+        list=list,
+        long=long,
+        str=str,
+        tuple=tuple,
+    ):
+
+    def _iterencode_list(lst, _current_indent_level):
         if not lst:
             yield '[]'
             return
@@ -174,31 +285,51 @@
             if markerid in markers:
                 raise ValueError("Circular reference detected")
             markers[markerid] = lst
-        yield '['
-        if self.indent is not None:
-            self.current_indent_level += 1
-            newline_indent = self._newline_indent()
-            separator = self.item_separator + newline_indent
-            yield newline_indent
+        buf = '['
+        if _indent is not None:
+            _current_indent_level += 1
+            newline_indent = '\n' + (' ' * (_indent * _current_indent_level))
+            separator = _item_separator + newline_indent
+            buf += newline_indent
         else:
             newline_indent = None
-            separator = self.item_separator
+            separator = _item_separator
         first = True
         for value in lst:
             if first:
                 first = False
             else:
-                yield separator
-            for chunk in self._iterencode(value, markers):
-                yield chunk
+                buf = separator
+            if isinstance(value, basestring):
+                yield buf + _encoder(value)
+            elif value is None:
+                yield buf + 'null'
+            elif value is True:
+                yield buf + 'true'
+            elif value is False:
+                yield buf + 'false'
+            elif isinstance(value, (int, long)):
+                yield buf + str(value)
+            elif isinstance(value, float):
+                yield buf + _floatstr(value)
+            else:
+                yield buf
+                if isinstance(value, (list, tuple)):
+                    chunks = _iterencode_list(value, _current_indent_level)
+                elif isinstance(value, dict):
+                    chunks = _iterencode_dict(value, _current_indent_level)
+                else:
+                    chunks = _iterencode(value, _current_indent_level)
+                for chunk in chunks:
+                    yield chunk
         if newline_indent is not None:
-            self.current_indent_level -= 1
-            yield self._newline_indent()
+            _current_indent_level -= 1
+            yield '\n' + (' ' * (_indent * _current_indent_level))
         yield ']'
         if markers is not None:
             del markers[markerid]
-    def _iterencode_dict(self, dct, markers=None):
+    def _iterencode_dict(dct, _current_indent_level):
         if not dct:
             yield '{}'
             return
@@ -208,78 +339,76 @@
                 raise ValueError("Circular reference detected")
             markers[markerid] = dct
         yield '{'
-        key_separator = self.key_separator
-        if self.indent is not None:
-            self.current_indent_level += 1
-            newline_indent = self._newline_indent()
-            item_separator = self.item_separator + newline_indent
+        if _indent is not None:
+            _current_indent_level += 1
+            newline_indent = '\n' + (' ' * (_indent * _current_indent_level))
+            item_separator = _item_separator + newline_indent
             yield newline_indent
         else:
             newline_indent = None
-            item_separator = self.item_separator
+            item_separator = _item_separator
         first = True
-        if self.ensure_ascii:
-            encoder = encode_basestring_ascii
+        if _sort_keys:
+            items = dct.items()
+            items.sort(key=lambda kv: kv[0])
         else:
-            encoder = encode_basestring
-        allow_nan = self.allow_nan
-        if self.sort_keys:
-            keys = dct.keys()
-            keys.sort()
-            items = [(k, dct[k]) for k in keys]
-        else:
             items = dct.iteritems()
-        _encoding = self.encoding
-        _do_decode = (_encoding is not None
-            and not (_need_utf8 and _encoding == 'utf-8'))
         for key, value in items:
-            if isinstance(key, str):
-                if _do_decode:
-                    key = key.decode(_encoding)
-            elif isinstance(key, basestring):
+            if isinstance(key, basestring):
                 pass
             # JavaScript is weakly typed for these, so it makes sense to
             # also allow them.  Many encoders seem to do something like this.
             elif isinstance(key, float):
-                key = floatstr(key, allow_nan)
-            elif isinstance(key, (int, long)):
-                key = str(key)
+                key = _floatstr(key)
             elif key is True:
                 key = 'true'
             elif key is False:
                 key = 'false'
             elif key is None:
                 key = 'null'
-            elif self.skipkeys:
+            elif isinstance(key, (int, long)):
+                key = str(key)
+            elif _skipkeys:
                 continue
             else:
-                raise TypeError("key %r is not a string" % (key,))
+                raise TypeError("key " + repr(key) + " is not a string")
             if first:
                 first = False
             else:
                 yield item_separator
-            yield encoder(key)
-            yield key_separator
-            for chunk in self._iterencode(value, markers):
-                yield chunk
+            yield _encoder(key)
+            yield _key_separator
+            if isinstance(value, basestring):
+                yield _encoder(value)
+            elif value is None:
+                yield 'null'
+            elif value is True:
+                yield 'true'
+            elif value is False:
+                yield 'false'
+            elif isinstance(value, (int, long)):
+                yield str(value)
+            elif isinstance(value, float):
+                yield _floatstr(value)
+            else:
+                if isinstance(value, (list, tuple)):
+                    chunks = _iterencode_list(value, _current_indent_level)
+                elif isinstance(value, dict):
+                    chunks = _iterencode_dict(value, _current_indent_level)
+                else:
+                    chunks = _iterencode(value, _current_indent_level)
+                for chunk in chunks:
+                    yield chunk
         if newline_indent is not None:
-            self.current_indent_level -= 1
-            yield self._newline_indent()
+            _current_indent_level -= 1
+            yield '\n' + (' ' * (_indent * _current_indent_level))
         yield '}'
         if markers is not None:
             del markers[markerid]
-    def _iterencode(self, o, markers=None):
+    def _iterencode(o, _current_indent_level):
         if isinstance(o, basestring):
-            if self.ensure_ascii:
-                encoder = encode_basestring_ascii
-            else:
-                encoder = encode_basestring
-            _encoding = self.encoding
-            if (_encoding is not None and isinstance(o, str)
-                    and not (_need_utf8 and _encoding == 'utf-8')):
-                o = o.decode(_encoding)
-            yield encoder(o)
+            yield _encoder(o)
         elif o is None:
             yield 'null'
         elif o is True:
@@ -289,12 +418,12 @@
         elif isinstance(o, (int, long)):
             yield str(o)
         elif isinstance(o, float):
-            yield floatstr(o, self.allow_nan)
+            yield _floatstr(o)
         elif isinstance(o, (list, tuple)):
-            for chunk in self._iterencode_list(o, markers):
+            for chunk in _iterencode_list(o, _current_indent_level):
                 yield chunk
         elif isinstance(o, dict):
-            for chunk in self._iterencode_dict(o, markers):
+            for chunk in _iterencode_dict(o, _current_indent_level):
                 yield chunk
         else:
             if markers is not None:
@@ -302,70 +431,10 @@
                 if markerid in markers:
                     raise ValueError("Circular reference detected")
                 markers[markerid] = o
-            for chunk in self._iterencode_default(o, markers):
+            o = _default(o)
+            for chunk in _iterencode(o, _current_indent_level):
                 yield chunk
             if markers is not None:
                 del markers[markerid]
-    def _iterencode_default(self, o, markers=None):
-        newobj = self.default(o)
-        return self._iterencode(newobj, markers)
-
-    def default(self, o):
-        """
-        Implement this method in a subclass such that it returns
-        a serializable object for ``o``, or calls the base implementation
-        (to raise a ``TypeError``).
-
-        For example, to support arbitrary iterators, you could
-        implement default like this::
-            
-            def default(self, o):
-                try:
-                    iterable = iter(o)
-                except TypeError:
-                    pass
-                else:
-                    return list(iterable)
-                return JSONEncoder.default(self, o)
-        """
-        raise TypeError("%r is not JSON serializable" % (o,))
-
-    def encode(self, o):
-        """
-        Return a JSON string representation of a Python data structure.
-
-        >>> JSONEncoder().encode({"foo": ["bar", "baz"]})
-        '{"foo":["bar", "baz"]}'
-        """
-        # This is for extremely simple cases and benchmarks...
-        if isinstance(o, basestring):
-            if isinstance(o, str):
-                _encoding = self.encoding
-                if (_encoding is not None 
-                        and not (_encoding == 'utf-8' and _need_utf8)):
-                    o = o.decode(_encoding)
-            return encode_basestring_ascii(o)
-        # This doesn't pass the iterator directly to ''.join() because it
-        # sucks at reporting exceptions.  It's going to do this internally
-        # anyway because it uses PySequence_Fast or similar.
-        chunks = list(self.iterencode(o))
-        return ''.join(chunks)
-
-    def iterencode(self, o):
-        """
-        Encode the given object and yield each string
-        representation as available.
-        
-        For example::
-            
-            for chunk in JSONEncoder().iterencode(bigobject):
-                mysocket.write(chunk)
-        """
-        if self.check_circular:
-            markers = {}
-        else:
-            markers = None
-        return self._iterencode(o, markers)
-
-__all__ = ['JSONEncoder']
+    return _iterencode
Modified: trunk/pywikipedia/simplejson/scanner.py
===================================================================
--- trunk/pywikipedia/simplejson/scanner.py	2009-08-07 17:25:10 UTC (rev 7129)
+++ trunk/pywikipedia/simplejson/scanner.py	2009-08-08 00:42:34 UTC (rev 7130)
@@ -1,63 +1,65 @@
+"""JSON token scanner
 """
-Iterator based sre token scanner
-"""
-import sre_parse, sre_compile, sre_constants
-from sre_constants import BRANCH, SUBPATTERN
-from re import VERBOSE, MULTILINE, DOTALL
 import re
+try:
+    from simplejson._speedups import make_scanner as c_make_scanner
+except ImportError:
+    c_make_scanner = None
-__all__ = ['Scanner', 'pattern']
+__all__ = ['make_scanner']
-FLAGS = (VERBOSE | MULTILINE | DOTALL)
-class Scanner(object):
-    def __init__(self, lexicon, flags=FLAGS):
-        self.actions = [None]
-        # combine phrases into a compound pattern
-        s = sre_parse.Pattern()
-        s.flags = flags
-        p = []
-        for idx, token in enumerate(lexicon):
-            phrase = token.pattern
-            try:
-                subpattern = sre_parse.SubPattern(s,
-                    [(SUBPATTERN, (idx + 1, sre_parse.parse(phrase, flags)))])
-            except sre_constants.error:
-                raise
-            p.append(subpattern)
-            self.actions.append(token)
+NUMBER_RE = re.compile(
+    r'(-?(?:0|[1-9]\d*))(.\d+)?([eE][-+]?\d+)?',
+    (re.VERBOSE | re.MULTILINE | re.DOTALL))
-        p = sre_parse.SubPattern(s, [(BRANCH, (None, p))])
-        self.scanner = sre_compile.compile(p)
+def py_make_scanner(context):
+    parse_object = context.parse_object
+    parse_array = context.parse_array
+    parse_string = context.parse_string
+    match_number = NUMBER_RE.match
+    encoding = context.encoding
+    strict = context.strict
+    parse_float = context.parse_float
+    parse_int = context.parse_int
+    parse_constant = context.parse_constant
+    object_hook = context.object_hook
+    def _scan_once(string, idx):
+        try:
+            nextchar = string[idx]
+        except IndexError:
+            raise StopIteration
-    def iterscan(self, string, idx=0, context=None):
-        """
-        Yield match, end_idx for each match
-        """
-        match = self.scanner.scanner(string, idx).match
-        actions = self.actions
-        lastend = idx
-        end = len(string)
-        while True:
-            m = match()
-            if m is None:
-                break
-            matchbegin, matchend = m.span()
-            if lastend == matchend:
-                break
-            action = actions[m.lastindex]
-            if action is not None:
-                rval, next_pos = action(m, context)
-                if next_pos is not None and next_pos != matchend:
-                    # "fast forward" the scanner
-                    matchend = next_pos
-                    match = self.scanner.scanner(string, matchend).match
-                yield rval, matchend
-            lastend = matchend
-            
-def pattern(pattern, flags=FLAGS):
-    def decorator(fn):
-        fn.pattern = pattern
-        fn.regex = re.compile(pattern, flags)
-        return fn
-    return decorator
+        if nextchar == '"':
+            return parse_string(string, idx + 1, encoding, strict)
+        elif nextchar == '{':
+            return parse_object((string, idx + 1), encoding, strict, _scan_once, object_hook)
+        elif nextchar == '[':
+            return parse_array((string, idx + 1), _scan_once)
+        elif nextchar == 'n' and string[idx:idx + 4] == 'null':
+            return None, idx + 4
+        elif nextchar == 't' and string[idx:idx + 4] == 'true':
+            return True, idx + 4
+        elif nextchar == 'f' and string[idx:idx + 5] == 'false':
+            return False, idx + 5
+
+        m = match_number(string, idx)
+        if m is not None:
+            integer, frac, exp = m.groups()
+            if frac or exp:
+                res = parse_float(integer + (frac or '') + (exp or ''))
+            else:
+                res = parse_int(integer)
+            return res, m.end()
+        elif nextchar == 'N' and string[idx:idx + 3] == 'NaN':
+            return parse_constant('NaN'), idx + 3
+        elif nextchar == 'I' and string[idx:idx + 8] == 'Infinity':
+            return parse_constant('Infinity'), idx + 8
+        elif nextchar == '-' and string[idx:idx + 9] == '-Infinity':
+            return parse_constant('-Infinity'), idx + 9
+        else:
+            raise StopIteration
+
+    return _scan_once
+
+make_scanner = c_make_scanner or py_make_scanner
Added: trunk/pywikipedia/simplejson/tool.py
===================================================================
--- trunk/pywikipedia/simplejson/tool.py	                        (rev 0)
+++ trunk/pywikipedia/simplejson/tool.py	2009-08-08 00:42:34 UTC (rev 7130)
@@ -0,0 +1,37 @@
+r"""Command-line tool to validate and pretty-print JSON
+
+Usage::
+
+    $ echo '{"json":"obj"}' | python -m simplejson.tool
+    {
+        "json": "obj"
+    }
+    $ echo '{ 1.2:3.4}' | python -m simplejson.tool
+    Expecting property name: line 1 column 2 (char 2)
+
+"""
+import sys
+import simplejson
+
+def main():
+    if len(sys.argv) == 1:
+        infile = sys.stdin
+        outfile = sys.stdout
+    elif len(sys.argv) == 2:
+        infile = open(sys.argv[1], 'rb')
+        outfile = sys.stdout
+    elif len(sys.argv) == 3:
+        infile = open(sys.argv[1], 'rb')
+        outfile = open(sys.argv[2], 'wb')
+    else:
+        raise SystemExit(sys.argv[0] + " [infile [outfile]]")
+    try:
+        obj = simplejson.load(infile)
+    except ValueError, e:
+        raise SystemExit(e)
+    simplejson.dump(obj, outfile, sort_keys=True, indent=4)
+    outfile.write('\n')
+
+
+if __name__ == '__main__':
+    main()

    

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[Pywikipedia-svn] SVN: [7130] trunk/pywikipedia/simplejson