xref: /external/chromium_org/third_party/cython/src/Cython/Utility/ObjectHandling.c

/*
 * General object operations and protocol implementations,
 * including their specialisations for certain builtins.
 *
 * Optional optimisations for builtins are in Optimize.c.
 *
 * Required replacements of builtins are in Builtins.c.
 */

/////////////// RaiseNoneIterError.proto ///////////////

static CYTHON_INLINE void __Pyx_RaiseNoneNotIterableError(void);

/////////////// RaiseNoneIterError ///////////////

static CYTHON_INLINE void __Pyx_RaiseNoneNotIterableError(void) {
    PyErr_SetString(PyExc_TypeError, "'NoneType' object is not iterable");
}

/////////////// RaiseTooManyValuesToUnpack.proto ///////////////

static CYTHON_INLINE void __Pyx_RaiseTooManyValuesError(Py_ssize_t expected);

/////////////// RaiseTooManyValuesToUnpack ///////////////

static CYTHON_INLINE void __Pyx_RaiseTooManyValuesError(Py_ssize_t expected) {
    PyErr_Format(PyExc_ValueError,
                 "too many values to unpack (expected %" CYTHON_FORMAT_SSIZE_T "d)", expected);
}

/////////////// RaiseNeedMoreValuesToUnpack.proto ///////////////

static CYTHON_INLINE void __Pyx_RaiseNeedMoreValuesError(Py_ssize_t index);

/////////////// RaiseNeedMoreValuesToUnpack ///////////////

static CYTHON_INLINE void __Pyx_RaiseNeedMoreValuesError(Py_ssize_t index) {
    PyErr_Format(PyExc_ValueError,
                 "need more than %" CYTHON_FORMAT_SSIZE_T "d value%.1s to unpack",
                 index, (index == 1) ? "" : "s");
}

/////////////// UnpackTupleError.proto ///////////////

static void __Pyx_UnpackTupleError(PyObject *, Py_ssize_t index); /*proto*/

/////////////// UnpackTupleError ///////////////
//@requires: RaiseNoneIterError
//@requires: RaiseNeedMoreValuesToUnpack
//@requires: RaiseTooManyValuesToUnpack

static void __Pyx_UnpackTupleError(PyObject *t, Py_ssize_t index) {
    if (t == Py_None) {
      __Pyx_RaiseNoneNotIterableError();
    } else if (PyTuple_GET_SIZE(t) < index) {
      __Pyx_RaiseNeedMoreValuesError(PyTuple_GET_SIZE(t));
    } else {
      __Pyx_RaiseTooManyValuesError(index);
    }
}

/////////////// UnpackItemEndCheck.proto ///////////////

static int __Pyx_IternextUnpackEndCheck(PyObject *retval, Py_ssize_t expected); /*proto*/

/////////////// UnpackItemEndCheck ///////////////
//@requires: RaiseTooManyValuesToUnpack
//@requires: IterFinish

static int __Pyx_IternextUnpackEndCheck(PyObject *retval, Py_ssize_t expected) {
    if (unlikely(retval)) {
        Py_DECREF(retval);
        __Pyx_RaiseTooManyValuesError(expected);
        return -1;
    } else {
        return __Pyx_IterFinish();
    }
    return 0;
}

/////////////// UnpackTuple2.proto ///////////////

static CYTHON_INLINE int __Pyx_unpack_tuple2(PyObject* tuple, PyObject** value1, PyObject** value2,
                                             int is_tuple, int has_known_size, int decref_tuple);

/////////////// UnpackTuple2 ///////////////
//@requires: UnpackItemEndCheck
//@requires: UnpackTupleError
//@requires: RaiseNeedMoreValuesToUnpack

static CYTHON_INLINE int __Pyx_unpack_tuple2(PyObject* tuple, PyObject** pvalue1, PyObject** pvalue2,
                                             int is_tuple, int has_known_size, int decref_tuple) {
    Py_ssize_t index;
    PyObject *value1 = NULL, *value2 = NULL, *iter = NULL;
    if (!is_tuple && unlikely(!PyTuple_Check(tuple))) {
        iternextfunc iternext;
        iter = PyObject_GetIter(tuple);
        if (unlikely(!iter)) goto bad;
        if (decref_tuple) { Py_DECREF(tuple); tuple = NULL; }
        iternext = Py_TYPE(iter)->tp_iternext;
        value1 = iternext(iter); if (unlikely(!value1)) { index = 0; goto unpacking_failed; }
        value2 = iternext(iter); if (unlikely(!value2)) { index = 1; goto unpacking_failed; }
        if (!has_known_size && unlikely(__Pyx_IternextUnpackEndCheck(iternext(iter), 2))) goto bad;
        Py_DECREF(iter);
    } else {
        if (!has_known_size && unlikely(PyTuple_GET_SIZE(tuple) != 2)) {
            __Pyx_UnpackTupleError(tuple, 2);
            goto bad;
        }
#if CYTHON_COMPILING_IN_PYPY
        value1 = PySequence_ITEM(tuple, 0);
        if (unlikely(!value1)) goto bad;
        value2 = PySequence_ITEM(tuple, 1);
        if (unlikely(!value2)) goto bad;
#else
        value1 = PyTuple_GET_ITEM(tuple, 0);
        value2 = PyTuple_GET_ITEM(tuple, 1);
        Py_INCREF(value1);
        Py_INCREF(value2);
#endif
        if (decref_tuple) { Py_DECREF(tuple); }
    }
    *pvalue1 = value1;
    *pvalue2 = value2;
    return 0;
unpacking_failed:
    if (!has_known_size && __Pyx_IterFinish() == 0)
        __Pyx_RaiseNeedMoreValuesError(index);
bad:
    Py_XDECREF(iter);
    Py_XDECREF(value1);
    Py_XDECREF(value2);
    if (decref_tuple) { Py_XDECREF(tuple); }
    return -1;
}

/////////////// IterNext.proto ///////////////

#define __Pyx_PyIter_Next(obj) __Pyx_PyIter_Next2(obj, NULL)
static CYTHON_INLINE PyObject *__Pyx_PyIter_Next2(PyObject *, PyObject *); /*proto*/

/////////////// IterNext ///////////////

// originally copied from Py3's builtin_next()
static CYTHON_INLINE PyObject *__Pyx_PyIter_Next2(PyObject* iterator, PyObject* defval) {
    PyObject* next;
    iternextfunc iternext = Py_TYPE(iterator)->tp_iternext;
#if CYTHON_COMPILING_IN_CPYTHON
    if (unlikely(!iternext)) {
#else
    if (unlikely(!iternext) || unlikely(!PyIter_Check(iterator))) {
#endif
        PyErr_Format(PyExc_TypeError,
            "%.200s object is not an iterator", Py_TYPE(iterator)->tp_name);
        return NULL;
    }
    next = iternext(iterator);
    if (likely(next))
        return next;
#if CYTHON_COMPILING_IN_CPYTHON
#if PY_VERSION_HEX >= 0x03010000 || (PY_MAJOR_VERSION < 3 && PY_VERSION_HEX >= 0x02070000)
    if (unlikely(iternext == &_PyObject_NextNotImplemented))
        return NULL;
#endif
#endif
    if (defval) {
        PyObject* exc_type = PyErr_Occurred();
        if (exc_type) {
            if (unlikely(exc_type != PyExc_StopIteration) &&
                    !PyErr_GivenExceptionMatches(exc_type, PyExc_StopIteration))
                return NULL;
            PyErr_Clear();
        }
        Py_INCREF(defval);
        return defval;
    }
    if (!PyErr_Occurred())
        PyErr_SetNone(PyExc_StopIteration);
    return NULL;
}

/////////////// IterFinish.proto ///////////////

static CYTHON_INLINE int __Pyx_IterFinish(void); /*proto*/

/////////////// IterFinish ///////////////

// When PyIter_Next(iter) has returned NULL in order to signal termination,
// this function does the right cleanup and returns 0 on success.  If it
// detects an error that occurred in the iterator, it returns -1.

static CYTHON_INLINE int __Pyx_IterFinish(void) {
#if CYTHON_COMPILING_IN_CPYTHON
    PyThreadState *tstate = PyThreadState_GET();
    PyObject* exc_type = tstate->curexc_type;
    if (unlikely(exc_type)) {
        if (likely(exc_type == PyExc_StopIteration) || PyErr_GivenExceptionMatches(exc_type, PyExc_StopIteration)) {
            PyObject *exc_value, *exc_tb;
            exc_value = tstate->curexc_value;
            exc_tb = tstate->curexc_traceback;
            tstate->curexc_type = 0;
            tstate->curexc_value = 0;
            tstate->curexc_traceback = 0;
            Py_DECREF(exc_type);
            Py_XDECREF(exc_value);
            Py_XDECREF(exc_tb);
            return 0;
        } else {
            return -1;
        }
    }
    return 0;
#else
    if (unlikely(PyErr_Occurred())) {
        if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) {
            PyErr_Clear();
            return 0;
        } else {
            return -1;
        }
    }
    return 0;
#endif
}

/////////////// DictGetItem.proto ///////////////

#if PY_MAJOR_VERSION >= 3
static PyObject *__Pyx_PyDict_GetItem(PyObject *d, PyObject* key) {
    PyObject *value;
    value = PyDict_GetItemWithError(d, key);
    if (unlikely(!value)) {
        if (!PyErr_Occurred()) {
            PyObject* args = PyTuple_Pack(1, key);
            if (likely(args))
                PyErr_SetObject(PyExc_KeyError, args);
            Py_XDECREF(args);
        }
        return NULL;
    }
    Py_INCREF(value);
    return value;
}
#else
    #define __Pyx_PyDict_GetItem(d, key) PyObject_GetItem(d, key)
#endif

/////////////// GetItemInt.proto ///////////////

#define __Pyx_GetItemInt(o, i, type, is_signed, to_py_func, is_list, wraparound, boundscheck) \
    (__Pyx_fits_Py_ssize_t(i, type, is_signed) ? \
    __Pyx_GetItemInt_Fast(o, (Py_ssize_t)i, is_list, wraparound, boundscheck) : \
    (is_list ? (PyErr_SetString(PyExc_IndexError, "list index out of range"), (PyObject*)NULL) : \
               __Pyx_GetItemInt_Generic(o, to_py_func(i))))

{{for type in ['List', 'Tuple']}}
#define __Pyx_GetItemInt_{{type}}(o, i, type, is_signed, to_py_func, is_list, wraparound, boundscheck) \
    (__Pyx_fits_Py_ssize_t(i, type, is_signed) ? \
    __Pyx_GetItemInt_{{type}}_Fast(o, (Py_ssize_t)i, wraparound, boundscheck) : \
    (PyErr_SetString(PyExc_IndexError, "{{ type.lower() }} index out of range"), (PyObject*)NULL))

static CYTHON_INLINE PyObject *__Pyx_GetItemInt_{{type}}_Fast(PyObject *o, Py_ssize_t i,
                                                              int wraparound, int boundscheck);
{{endfor}}

static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Generic(PyObject *o, PyObject* j);
static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Fast(PyObject *o, Py_ssize_t i,
                                                     int is_list, int wraparound, int boundscheck);

/////////////// GetItemInt ///////////////

static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Generic(PyObject *o, PyObject* j) {
    PyObject *r;
    if (!j) return NULL;
    r = PyObject_GetItem(o, j);
    Py_DECREF(j);
    return r;
}

{{for type in ['List', 'Tuple']}}
static CYTHON_INLINE PyObject *__Pyx_GetItemInt_{{type}}_Fast(PyObject *o, Py_ssize_t i,
                                                              int wraparound, int boundscheck) {
#if CYTHON_COMPILING_IN_CPYTHON
    if (wraparound & unlikely(i < 0)) i += Py{{type}}_GET_SIZE(o);
    if ((!boundscheck) || likely((0 <= i) & (i < Py{{type}}_GET_SIZE(o)))) {
        PyObject *r = Py{{type}}_GET_ITEM(o, i);
        Py_INCREF(r);
        return r;
    }
    return __Pyx_GetItemInt_Generic(o, PyInt_FromSsize_t(i));
#else
    return PySequence_GetItem(o, i);
#endif
}
{{endfor}}

static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Fast(PyObject *o, Py_ssize_t i,
                                                     int is_list, int wraparound, int boundscheck) {
#if CYTHON_COMPILING_IN_CPYTHON
    if (is_list || PyList_CheckExact(o)) {
        Py_ssize_t n = ((!wraparound) | likely(i >= 0)) ? i : i + PyList_GET_SIZE(o);
        if ((!boundscheck) || (likely((n >= 0) & (n < PyList_GET_SIZE(o))))) {
            PyObject *r = PyList_GET_ITEM(o, n);
            Py_INCREF(r);
            return r;
        }
    }
    else if (PyTuple_CheckExact(o)) {
        Py_ssize_t n = ((!wraparound) | likely(i >= 0)) ? i : i + PyTuple_GET_SIZE(o);
        if ((!boundscheck) || likely((n >= 0) & (n < PyTuple_GET_SIZE(o)))) {
            PyObject *r = PyTuple_GET_ITEM(o, n);
            Py_INCREF(r);
            return r;
        }
    } else {
        // inlined PySequence_GetItem() + special cased length overflow
        PySequenceMethods *m = Py_TYPE(o)->tp_as_sequence;
        if (likely(m && m->sq_item)) {
            if (wraparound && unlikely(i < 0) && likely(m->sq_length)) {
                Py_ssize_t l = m->sq_length(o);
                if (likely(l >= 0)) {
                    i += l;
                } else {
                    // if length > max(Py_ssize_t), maybe the object can wrap around itself?
                    if (PyErr_ExceptionMatches(PyExc_OverflowError))
                        PyErr_Clear();
                    else
                        return NULL;
                }
            }
            return m->sq_item(o, i);
        }
    }
#else
    if (is_list || PySequence_Check(o)) {
        return PySequence_GetItem(o, i);
    }
#endif
    return __Pyx_GetItemInt_Generic(o, PyInt_FromSsize_t(i));
}

/////////////// SetItemInt.proto ///////////////

#define __Pyx_SetItemInt(o, i, v, type, is_signed, to_py_func, is_list, wraparound, boundscheck) \
    (__Pyx_fits_Py_ssize_t(i, type, is_signed) ? \
    __Pyx_SetItemInt_Fast(o, (Py_ssize_t)i, v, is_list, wraparound, boundscheck) : \
    (is_list ? (PyErr_SetString(PyExc_IndexError, "list assignment index out of range"), -1) : \
               __Pyx_SetItemInt_Generic(o, to_py_func(i), v)))

static CYTHON_INLINE int __Pyx_SetItemInt_Generic(PyObject *o, PyObject *j, PyObject *v);
static CYTHON_INLINE int __Pyx_SetItemInt_Fast(PyObject *o, Py_ssize_t i, PyObject *v,
                                               int is_list, int wraparound, int boundscheck);

/////////////// SetItemInt ///////////////

static CYTHON_INLINE int __Pyx_SetItemInt_Generic(PyObject *o, PyObject *j, PyObject *v) {
    int r;
    if (!j) return -1;
    r = PyObject_SetItem(o, j, v);
    Py_DECREF(j);
    return r;
}

static CYTHON_INLINE int __Pyx_SetItemInt_Fast(PyObject *o, Py_ssize_t i, PyObject *v,
                                               int is_list, int wraparound, int boundscheck) {
#if CYTHON_COMPILING_IN_CPYTHON
    if (is_list || PyList_CheckExact(o)) {
        Py_ssize_t n = (!wraparound) ? i : ((likely(i >= 0)) ? i : i + PyList_GET_SIZE(o));
        if ((!boundscheck) || likely((n >= 0) & (n < PyList_GET_SIZE(o)))) {
            PyObject* old = PyList_GET_ITEM(o, n);
            Py_INCREF(v);
            PyList_SET_ITEM(o, n, v);
            Py_DECREF(old);
            return 1;
        }
    } else {
        // inlined PySequence_SetItem() + special cased length overflow
        PySequenceMethods *m = Py_TYPE(o)->tp_as_sequence;
        if (likely(m && m->sq_ass_item)) {
            if (wraparound && unlikely(i < 0) && likely(m->sq_length)) {
                Py_ssize_t l = m->sq_length(o);
                if (likely(l >= 0)) {
                    i += l;
                } else {
                    // if length > max(Py_ssize_t), maybe the object can wrap around itself?
                    if (PyErr_ExceptionMatches(PyExc_OverflowError))
                        PyErr_Clear();
                    else
                        return -1;
                }
            }
            return m->sq_ass_item(o, i, v);
        }
    }
#else
#if CYTHON_COMPILING_IN_PYPY
    if (is_list || (PySequence_Check(o) && !PyDict_Check(o))) {
#else
    if (is_list || PySequence_Check(o)) {
#endif
        return PySequence_SetItem(o, i, v);
    }
#endif
    return __Pyx_SetItemInt_Generic(o, PyInt_FromSsize_t(i), v);
}


/////////////// DelItemInt.proto ///////////////

#define __Pyx_DelItemInt(o, i, type, is_signed, to_py_func, is_list, wraparound, boundscheck) \
    (__Pyx_fits_Py_ssize_t(i, type, is_signed) ? \
    __Pyx_DelItemInt_Fast(o, (Py_ssize_t)i, is_list, wraparound) : \
    (is_list ? (PyErr_SetString(PyExc_IndexError, "list assignment index out of range"), -1) : \
               __Pyx_DelItem_Generic(o, to_py_func(i))))

static CYTHON_INLINE int __Pyx_DelItem_Generic(PyObject *o, PyObject *j);
static CYTHON_INLINE int __Pyx_DelItemInt_Fast(PyObject *o, Py_ssize_t i,
                                               CYTHON_UNUSED int is_list, int wraparound);

/////////////// DelItemInt ///////////////

static CYTHON_INLINE int __Pyx_DelItem_Generic(PyObject *o, PyObject *j) {
    int r;
    if (!j) return -1;
    r = PyObject_DelItem(o, j);
    Py_DECREF(j);
    return r;
}

static CYTHON_INLINE int __Pyx_DelItemInt_Fast(PyObject *o, Py_ssize_t i,
                                               CYTHON_UNUSED int is_list, int wraparound) {
#if CYTHON_COMPILING_IN_PYPY
    if (is_list || PySequence_Check(o)) {
        return PySequence_DelItem(o, i);
    }
#else
    // inlined PySequence_DelItem() + special cased length overflow
    PySequenceMethods *m = Py_TYPE(o)->tp_as_sequence;
    if (likely(m && m->sq_ass_item)) {
        if (wraparound && unlikely(i < 0) && likely(m->sq_length)) {
            Py_ssize_t l = m->sq_length(o);
            if (likely(l >= 0)) {
                i += l;
            } else {
                // if length > max(Py_ssize_t), maybe the object can wrap around itself?
                if (PyErr_ExceptionMatches(PyExc_OverflowError))
                    PyErr_Clear();
                else
                    return -1;
            }
        }
        return m->sq_ass_item(o, i, (PyObject *)NULL);
    }
#endif
    return __Pyx_DelItem_Generic(o, PyInt_FromSsize_t(i));
}


/////////////// SliceObject.proto ///////////////

// we pass pointer addresses to show the C compiler what is NULL and what isn't
{{if access == 'Get'}}
static CYTHON_INLINE PyObject* __Pyx_PyObject_GetSlice(
        PyObject* obj, Py_ssize_t cstart, Py_ssize_t cstop,
        PyObject** py_start, PyObject** py_stop, PyObject** py_slice,
        int has_cstart, int has_cstop, int wraparound);
{{else}}
#define __Pyx_PyObject_DelSlice(obj, cstart, cstop, py_start, py_stop, py_slice, has_cstart, has_cstop, wraparound) \
    __Pyx_PyObject_SetSlice(obj, (PyObject*)NULL, cstart, cstop, py_start, py_stop, py_slice, has_cstart, has_cstop, wraparound)

// we pass pointer addresses to show the C compiler what is NULL and what isn't
static CYTHON_INLINE int __Pyx_PyObject_SetSlice(
        PyObject* obj, PyObject* value, Py_ssize_t cstart, Py_ssize_t cstop,
        PyObject** py_start, PyObject** py_stop, PyObject** py_slice,
        int has_cstart, int has_cstop, int wraparound);
{{endif}}

/////////////// SliceObject ///////////////

{{if access == 'Get'}}
static CYTHON_INLINE PyObject* __Pyx_PyObject_GetSlice(
        PyObject* obj, Py_ssize_t cstart, Py_ssize_t cstop,
{{else}}
static CYTHON_INLINE int __Pyx_PyObject_SetSlice(
        PyObject* obj, PyObject* value, Py_ssize_t cstart, Py_ssize_t cstop,
{{endif}}
        PyObject** _py_start, PyObject** _py_stop, PyObject** _py_slice,
        int has_cstart, int has_cstop, CYTHON_UNUSED int wraparound) {
#if CYTHON_COMPILING_IN_CPYTHON
    PyMappingMethods* mp;
#if PY_MAJOR_VERSION < 3
    PySequenceMethods* ms = Py_TYPE(obj)->tp_as_sequence;
    if (likely(ms && ms->sq_{{if access == 'Set'}}ass_{{endif}}slice)) {
        if (!has_cstart) {
            if (_py_start && (*_py_start != Py_None)) {
                cstart = __Pyx_PyIndex_AsSsize_t(*_py_start);
                if ((cstart == (Py_ssize_t)-1) && PyErr_Occurred()) goto bad;
            } else
                cstart = 0;
        }
        if (!has_cstop) {
            if (_py_stop && (*_py_stop != Py_None)) {
                cstop = __Pyx_PyIndex_AsSsize_t(*_py_stop);
                if ((cstop == (Py_ssize_t)-1) && PyErr_Occurred()) goto bad;
            } else
                cstop = PY_SSIZE_T_MAX;
        }
        if (wraparound && unlikely((cstart < 0) | (cstop < 0)) && likely(ms->sq_length)) {
            Py_ssize_t l = ms->sq_length(obj);
            if (likely(l >= 0)) {
                if (cstop < 0) {
                    cstop += l;
                    if (cstop < 0) cstop = 0;
                }
                if (cstart < 0) {
                    cstart += l;
                    if (cstart < 0) cstart = 0;
                }
            } else {
                // if length > max(Py_ssize_t), maybe the object can wrap around itself?
                if (PyErr_ExceptionMatches(PyExc_OverflowError))
                    PyErr_Clear();
                else
                    goto bad;
            }
        }
{{if access == 'Get'}}
        return ms->sq_slice(obj, cstart, cstop);
{{else}}
        return ms->sq_ass_slice(obj, cstart, cstop, value);
{{endif}}
    }
#endif

    mp = Py_TYPE(obj)->tp_as_mapping;
{{if access == 'Get'}}
    if (likely(mp && mp->mp_subscript))
{{else}}
    if (likely(mp && mp->mp_ass_subscript))
{{endif}}
#endif
    {
        {{if access == 'Get'}}PyObject*{{else}}int{{endif}} result;
        PyObject *py_slice, *py_start, *py_stop;
        if (_py_slice) {
            py_slice = *_py_slice;
        } else {
            PyObject* owned_start = NULL;
            PyObject* owned_stop = NULL;
            if (_py_start) {
                py_start = *_py_start;
            } else {
                if (has_cstart) {
                    owned_start = py_start = PyInt_FromSsize_t(cstart);
                    if (unlikely(!py_start)) goto bad;
                } else
                    py_start = Py_None;
            }
            if (_py_stop) {
                py_stop = *_py_stop;
            } else {
                if (has_cstop) {
                    owned_stop = py_stop = PyInt_FromSsize_t(cstop);
                    if (unlikely(!py_stop)) {
                        Py_XDECREF(owned_start);
                        goto bad;
                    }
                } else
                    py_stop = Py_None;
            }
            py_slice = PySlice_New(py_start, py_stop, Py_None);
            Py_XDECREF(owned_start);
            Py_XDECREF(owned_stop);
            if (unlikely(!py_slice)) goto bad;
        }
#if CYTHON_COMPILING_IN_CPYTHON
{{if access == 'Get'}}
        result = mp->mp_subscript(obj, py_slice);
#else
        result = PyObject_GetItem(obj, py_slice);
{{else}}
        result = mp->mp_ass_subscript(obj, py_slice, value);
#else
        result = value ? PyObject_SetItem(obj, py_slice, value) : PyObject_DelItem(obj, py_slice);
{{endif}}
#endif
        if (!_py_slice) {
            Py_DECREF(py_slice);
        }
        return result;
    }
    PyErr_Format(PyExc_TypeError,
{{if access == 'Get'}}
        "'%.200s' object is unsliceable", Py_TYPE(obj)->tp_name);
{{else}}
        "'%.200s' object does not support slice %.10s",
        Py_TYPE(obj)->tp_name, value ? "assignment" : "deletion");
{{endif}}

bad:
    return {{if access == 'Get'}}NULL{{else}}-1{{endif}};
}


/////////////// SliceTupleAndList.proto ///////////////

#if CYTHON_COMPILING_IN_CPYTHON
static CYTHON_INLINE PyObject* __Pyx_PyList_GetSlice(PyObject* src, Py_ssize_t start, Py_ssize_t stop);
static CYTHON_INLINE PyObject* __Pyx_PyTuple_GetSlice(PyObject* src, Py_ssize_t start, Py_ssize_t stop);
#else
#define __Pyx_PyList_GetSlice(seq, start, stop)   PySequence_GetSlice(seq, start, stop)
#define __Pyx_PyTuple_GetSlice(seq, start, stop)  PySequence_GetSlice(seq, start, stop)
#endif

/////////////// SliceTupleAndList ///////////////

#if CYTHON_COMPILING_IN_CPYTHON
static CYTHON_INLINE void __Pyx_crop_slice(Py_ssize_t* _start, Py_ssize_t* _stop, Py_ssize_t* _length) {
    Py_ssize_t start = *_start, stop = *_stop, length = *_length;
    if (start < 0) {
        start += length;
        if (start < 0)
            start = 0;
    }

    if (stop < 0)
        stop += length;
    else if (stop > length)
        stop = length;

    *_length = stop - start;
    *_start = start;
    *_stop = stop;
}

static CYTHON_INLINE void __Pyx_copy_object_array(PyObject** CYTHON_RESTRICT src, PyObject** CYTHON_RESTRICT dest, Py_ssize_t length) {
    PyObject *v;
    Py_ssize_t i;
    for (i = 0; i < length; i++) {
        v = dest[i] = src[i];
        Py_INCREF(v);
    }
}

{{for type in ['List', 'Tuple']}}
static CYTHON_INLINE PyObject* __Pyx_Py{{type}}_GetSlice(
            PyObject* src, Py_ssize_t start, Py_ssize_t stop) {
    PyObject* dest;
    Py_ssize_t length = Py{{type}}_GET_SIZE(src);
    __Pyx_crop_slice(&start, &stop, &length);
    if (unlikely(length <= 0))
        return Py{{type}}_New(0);

    dest = Py{{type}}_New(length);
    if (unlikely(!dest))
        return NULL;
    __Pyx_copy_object_array(
        ((Py{{type}}Object*)src)->ob_item + start,
        ((Py{{type}}Object*)dest)->ob_item,
        length);
    return dest;
}
{{endfor}}
#endif


/////////////// CalculateMetaclass.proto ///////////////

static PyObject *__Pyx_CalculateMetaclass(PyTypeObject *metaclass, PyObject *bases);

/////////////// CalculateMetaclass ///////////////

static PyObject *__Pyx_CalculateMetaclass(PyTypeObject *metaclass, PyObject *bases) {
    Py_ssize_t i, nbases = PyTuple_GET_SIZE(bases);
    for (i=0; i < nbases; i++) {
        PyTypeObject *tmptype;
        PyObject *tmp = PyTuple_GET_ITEM(bases, i);
        tmptype = Py_TYPE(tmp);
#if PY_MAJOR_VERSION < 3
        if (tmptype == &PyClass_Type)
            continue;
#endif
        if (!metaclass) {
            metaclass = tmptype;
            continue;
        }
        if (PyType_IsSubtype(metaclass, tmptype))
            continue;
        if (PyType_IsSubtype(tmptype, metaclass)) {
            metaclass = tmptype;
            continue;
        }
        // else:
        PyErr_SetString(PyExc_TypeError,
                        "metaclass conflict: "
                        "the metaclass of a derived class "
                        "must be a (non-strict) subclass "
                        "of the metaclasses of all its bases");
        return NULL;
    }
    if (!metaclass) {
#if PY_MAJOR_VERSION < 3
        metaclass = &PyClass_Type;
#else
        metaclass = &PyType_Type;
#endif
    }
    // make owned reference
    Py_INCREF((PyObject*) metaclass);
    return (PyObject*) metaclass;
}


/////////////// FindInheritedMetaclass.proto ///////////////

static PyObject *__Pyx_FindInheritedMetaclass(PyObject *bases); /*proto*/

/////////////// FindInheritedMetaclass ///////////////
//@requires: PyObjectGetAttrStr
//@requires: CalculateMetaclass

static PyObject *__Pyx_FindInheritedMetaclass(PyObject *bases) {
    PyObject *metaclass;
    if (PyTuple_Check(bases) && PyTuple_GET_SIZE(bases) > 0) {
        PyTypeObject *metatype;
        PyObject *base = PyTuple_GET_ITEM(bases, 0);
#if PY_MAJOR_VERSION < 3
        PyObject* basetype = __Pyx_PyObject_GetAttrStr(base, PYIDENT("__class__"));
        if (basetype) {
            metatype = (PyType_Check(basetype)) ? ((PyTypeObject*) basetype) : NULL;
        } else {
            PyErr_Clear();
            metatype = Py_TYPE(base);
            basetype = (PyObject*) metatype;
            Py_INCREF(basetype);
        }
#else
        metatype = Py_TYPE(base);
#endif
        metaclass = __Pyx_CalculateMetaclass(metatype, bases);
#if PY_MAJOR_VERSION < 3
        Py_DECREF(basetype);
#endif
    } else {
        // no bases => use default metaclass
#if PY_MAJOR_VERSION < 3
        metaclass = (PyObject *) &PyClass_Type;
#else
        metaclass = (PyObject *) &PyType_Type;
#endif
        Py_INCREF(metaclass);
    }
    return metaclass;
}

/////////////// Py3MetaclassGet.proto ///////////////

static PyObject *__Pyx_Py3MetaclassGet(PyObject *bases, PyObject *mkw); /*proto*/

/////////////// Py3MetaclassGet ///////////////
//@requires: FindInheritedMetaclass
//@requires: CalculateMetaclass

static PyObject *__Pyx_Py3MetaclassGet(PyObject *bases, PyObject *mkw) {
    PyObject *metaclass = PyDict_GetItem(mkw, PYIDENT("metaclass"));
    if (metaclass) {
        Py_INCREF(metaclass);
        if (PyDict_DelItem(mkw, PYIDENT("metaclass")) < 0) {
            Py_DECREF(metaclass);
            return NULL;
        }
        if (PyType_Check(metaclass)) {
            PyObject* orig = metaclass;
            metaclass = __Pyx_CalculateMetaclass((PyTypeObject*) metaclass, bases);
            Py_DECREF(orig);
        }
        return metaclass;
    }
    return __Pyx_FindInheritedMetaclass(bases);
}

/////////////// CreateClass.proto ///////////////

static PyObject *__Pyx_CreateClass(PyObject *bases, PyObject *dict, PyObject *name,
                                   PyObject *qualname, PyObject *modname); /*proto*/

/////////////// CreateClass ///////////////
//@requires: FindInheritedMetaclass
//@requires: CalculateMetaclass

static PyObject *__Pyx_CreateClass(PyObject *bases, PyObject *dict, PyObject *name,
                                   PyObject *qualname, PyObject *modname) {
    PyObject *result;
    PyObject *metaclass;

    if (PyDict_SetItem(dict, PYIDENT("__module__"), modname) < 0)
        return NULL;
    if (PyDict_SetItem(dict, PYIDENT("__qualname__"), qualname) < 0)
        return NULL;

    /* Python2 __metaclass__ */
    metaclass = PyDict_GetItem(dict, PYIDENT("__metaclass__"));
    if (metaclass) {
        Py_INCREF(metaclass);
        if (PyType_Check(metaclass)) {
            PyObject* orig = metaclass;
            metaclass = __Pyx_CalculateMetaclass((PyTypeObject*) metaclass, bases);
            Py_DECREF(orig);
        }
    } else {
        metaclass = __Pyx_FindInheritedMetaclass(bases);
    }
    if (unlikely(!metaclass))
        return NULL;
    result = PyObject_CallFunctionObjArgs(metaclass, name, bases, dict, NULL);
    Py_DECREF(metaclass);
    return result;
}

/////////////// Py3ClassCreate.proto ///////////////

static PyObject *__Pyx_Py3MetaclassPrepare(PyObject *metaclass, PyObject *bases, PyObject *name, PyObject *qualname,
                                           PyObject *mkw, PyObject *modname, PyObject *doc); /*proto*/
static PyObject *__Pyx_Py3ClassCreate(PyObject *metaclass, PyObject *name, PyObject *bases, PyObject *dict,
                                      PyObject *mkw, int calculate_metaclass, int allow_py2_metaclass); /*proto*/

/////////////// Py3ClassCreate ///////////////
//@requires: PyObjectGetAttrStr
//@requires: CalculateMetaclass

static PyObject *__Pyx_Py3MetaclassPrepare(PyObject *metaclass, PyObject *bases, PyObject *name,
                                           PyObject *qualname, PyObject *mkw, PyObject *modname, PyObject *doc) {
    PyObject *ns;
    if (metaclass) {
        PyObject *prep = __Pyx_PyObject_GetAttrStr(metaclass, PYIDENT("__prepare__"));
        if (prep) {
            PyObject *pargs = PyTuple_Pack(2, name, bases);
            if (unlikely(!pargs)) {
                Py_DECREF(prep);
                return NULL;
            }
            ns = PyObject_Call(prep, pargs, mkw);
            Py_DECREF(prep);
            Py_DECREF(pargs);
        } else {
            if (unlikely(!PyErr_ExceptionMatches(PyExc_AttributeError)))
                return NULL;
            PyErr_Clear();
            ns = PyDict_New();
        }
    } else {
        ns = PyDict_New();
    }

    if (unlikely(!ns))
        return NULL;

    /* Required here to emulate assignment order */
    if (unlikely(PyObject_SetItem(ns, PYIDENT("__module__"), modname) < 0)) goto bad;
    if (unlikely(PyObject_SetItem(ns, PYIDENT("__qualname__"), qualname) < 0)) goto bad;
    if (unlikely(doc && PyObject_SetItem(ns, PYIDENT("__doc__"), doc) < 0)) goto bad;
    return ns;
bad:
    Py_DECREF(ns);
    return NULL;
}

static PyObject *__Pyx_Py3ClassCreate(PyObject *metaclass, PyObject *name, PyObject *bases,
                                      PyObject *dict, PyObject *mkw,
                                      int calculate_metaclass, int allow_py2_metaclass) {
    PyObject *result, *margs;
    PyObject *owned_metaclass = NULL;
    if (allow_py2_metaclass) {
        /* honour Python2 __metaclass__ for backward compatibility */
        owned_metaclass = PyObject_GetItem(dict, PYIDENT("__metaclass__"));
        if (owned_metaclass) {
            metaclass = owned_metaclass;
        } else if (likely(PyErr_ExceptionMatches(PyExc_KeyError))) {
            PyErr_Clear();
        } else {
            return NULL;
        }
    }
    if (calculate_metaclass && (!metaclass || PyType_Check(metaclass))) {
        metaclass = __Pyx_CalculateMetaclass((PyTypeObject*) metaclass, bases);
        Py_XDECREF(owned_metaclass);
        if (unlikely(!metaclass))
            return NULL;
        owned_metaclass = metaclass;
    }
    margs = PyTuple_Pack(3, name, bases, dict);
    if (unlikely(!margs)) {
        result = NULL;
    } else {
        result = PyObject_Call(metaclass, margs, mkw);
        Py_DECREF(margs);
    }
    Py_XDECREF(owned_metaclass);
    return result;
}

/////////////// ExtTypeTest.proto ///////////////

static CYTHON_INLINE int __Pyx_TypeTest(PyObject *obj, PyTypeObject *type); /*proto*/

/////////////// ExtTypeTest ///////////////

static CYTHON_INLINE int __Pyx_TypeTest(PyObject *obj, PyTypeObject *type) {
    if (unlikely(!type)) {
        PyErr_SetString(PyExc_SystemError, "Missing type object");
        return 0;
    }
    if (likely(PyObject_TypeCheck(obj, type)))
        return 1;
    PyErr_Format(PyExc_TypeError, "Cannot convert %.200s to %.200s",
                 Py_TYPE(obj)->tp_name, type->tp_name);
    return 0;
}

/////////////// CallableCheck.proto ///////////////

#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
#define __Pyx_PyCallable_Check(obj)   ((obj)->ob_type->tp_call != NULL)
#else
#define __Pyx_PyCallable_Check(obj)   PyCallable_Check(obj)
#endif

/////////////// PyDictContains.proto ///////////////

static CYTHON_INLINE int __Pyx_PyDict_Contains(PyObject* item, PyObject* dict, int eq) {
    int result = PyDict_Contains(dict, item);
    return unlikely(result < 0) ? result : (result == (eq == Py_EQ));
}

/////////////// PySequenceContains.proto ///////////////

static CYTHON_INLINE int __Pyx_PySequence_Contains(PyObject* item, PyObject* seq, int eq) {
    int result = PySequence_Contains(seq, item);
    return unlikely(result < 0) ? result : (result == (eq == Py_EQ));
}

/////////////// PyBoolOrNullFromLong.proto ///////////////

static CYTHON_INLINE PyObject* __Pyx_PyBoolOrNull_FromLong(long b) {
    return unlikely(b < 0) ? NULL : __Pyx_PyBool_FromLong(b);
}

/////////////// GetBuiltinName.proto ///////////////

static PyObject *__Pyx_GetBuiltinName(PyObject *name); /*proto*/

/////////////// GetBuiltinName ///////////////
//@requires: PyObjectGetAttrStr
//@substitute: naming

static PyObject *__Pyx_GetBuiltinName(PyObject *name) {
    PyObject* result = __Pyx_PyObject_GetAttrStr($builtins_cname, name);
    if (unlikely(!result)) {
        PyErr_Format(PyExc_NameError,
#if PY_MAJOR_VERSION >= 3
            "name '%U' is not defined", name);
#else
            "name '%.200s' is not defined", PyString_AS_STRING(name));
#endif
    }
    return result;
}

/////////////// GetNameInClass.proto ///////////////

static PyObject *__Pyx_GetNameInClass(PyObject *nmspace, PyObject *name); /*proto*/

/////////////// GetNameInClass ///////////////
//@requires: PyObjectGetAttrStr
//@requires: GetModuleGlobalName

static PyObject *__Pyx_GetNameInClass(PyObject *nmspace, PyObject *name) {
    PyObject *result;
    result = __Pyx_PyObject_GetAttrStr(nmspace, name);
    if (!result)
        result = __Pyx_GetModuleGlobalName(name);
    return result;
}

/////////////// GetModuleGlobalName.proto ///////////////

static CYTHON_INLINE PyObject *__Pyx_GetModuleGlobalName(PyObject *name); /*proto*/

/////////////// GetModuleGlobalName ///////////////
//@requires: GetBuiltinName
//@substitute: naming

static CYTHON_INLINE PyObject *__Pyx_GetModuleGlobalName(PyObject *name) {
    PyObject *result;
#if CYTHON_COMPILING_IN_CPYTHON
    result = PyDict_GetItem($moddict_cname, name);
    if (result) {
        Py_INCREF(result);
    } else {
#else
    result = PyObject_GetItem($moddict_cname, name);
    if (!result) {
        PyErr_Clear();
#endif
        result = __Pyx_GetBuiltinName(name);
    }
    return result;
}

//////////////////// GetAttr.proto ////////////////////

static CYTHON_INLINE PyObject *__Pyx_GetAttr(PyObject *, PyObject *); /*proto*/

//////////////////// GetAttr ////////////////////
//@requires: PyObjectGetAttrStr

static CYTHON_INLINE PyObject *__Pyx_GetAttr(PyObject *o, PyObject *n) {
#if CYTHON_COMPILING_IN_CPYTHON
#if PY_MAJOR_VERSION >= 3
    if (likely(PyUnicode_Check(n)))
#else
    if (likely(PyString_Check(n)))
#endif
        return __Pyx_PyObject_GetAttrStr(o, n);
#endif
    return PyObject_GetAttr(o, n);
}

/////////////// PyObjectLookupSpecial.proto ///////////////
//@requires: PyObjectGetAttrStr

#if CYTHON_COMPILING_IN_CPYTHON && (PY_VERSION_HEX >= 0x03020000 || PY_MAJOR_VERSION < 3 && PY_VERSION_HEX >= 0x02070000)
// looks like calling _PyType_Lookup() isn't safe in Py<=2.6/3.1
static CYTHON_INLINE PyObject* __Pyx_PyObject_LookupSpecial(PyObject* obj, PyObject* attr_name) {
    PyObject *res;
    PyTypeObject *tp = Py_TYPE(obj);
#if PY_MAJOR_VERSION < 3
    if (unlikely(PyInstance_Check(obj)))
        return __Pyx_PyObject_GetAttrStr(obj, attr_name);
#endif
    // adapted from CPython's special_lookup() in ceval.c
    res = _PyType_Lookup(tp, attr_name);
    if (likely(res)) {
        descrgetfunc f = Py_TYPE(res)->tp_descr_get;
        if (!f) {
            Py_INCREF(res);
        } else {
            res = f(res, obj, (PyObject *)tp);
        }
    } else {
        PyErr_SetObject(PyExc_AttributeError, attr_name);
    }
    return res;
}
#else
#define __Pyx_PyObject_LookupSpecial(o,n) __Pyx_PyObject_GetAttrStr(o,n)
#endif

/////////////// PyObjectGetAttrStr.proto ///////////////

#if CYTHON_COMPILING_IN_CPYTHON
static CYTHON_INLINE PyObject* __Pyx_PyObject_GetAttrStr(PyObject* obj, PyObject* attr_name) {
    PyTypeObject* tp = Py_TYPE(obj);
    if (likely(tp->tp_getattro))
        return tp->tp_getattro(obj, attr_name);
#if PY_MAJOR_VERSION < 3
    if (likely(tp->tp_getattr))
        return tp->tp_getattr(obj, PyString_AS_STRING(attr_name));
#endif
    return PyObject_GetAttr(obj, attr_name);
}
#else
#define __Pyx_PyObject_GetAttrStr(o,n) PyObject_GetAttr(o,n)
#endif

/////////////// PyObjectSetAttrStr.proto ///////////////

#if CYTHON_COMPILING_IN_CPYTHON
#define __Pyx_PyObject_DelAttrStr(o,n) __Pyx_PyObject_SetAttrStr(o,n,NULL)
static CYTHON_INLINE int __Pyx_PyObject_SetAttrStr(PyObject* obj, PyObject* attr_name, PyObject* value) {
    PyTypeObject* tp = Py_TYPE(obj);
    if (likely(tp->tp_setattro))
        return tp->tp_setattro(obj, attr_name, value);
#if PY_MAJOR_VERSION < 3
    if (likely(tp->tp_setattr))
        return tp->tp_setattr(obj, PyString_AS_STRING(attr_name), value);
#endif
    return PyObject_SetAttr(obj, attr_name, value);
}
#else
#define __Pyx_PyObject_DelAttrStr(o,n)   PyObject_DelAttr(o,n)
#define __Pyx_PyObject_SetAttrStr(o,n,v) PyObject_SetAttr(o,n,v)
#endif

/////////////// PyObjectCallMethod.proto ///////////////
//@requires: PyObjectGetAttrStr
//@requires: PyObjectCall
//@substitute: naming

static PyObject* __Pyx_PyObject_CallMethodTuple(PyObject* obj, PyObject* method_name, PyObject* args) {
    PyObject *method, *result = NULL;
    if (unlikely(!args)) return NULL;
    method = __Pyx_PyObject_GetAttrStr(obj, method_name);
    if (unlikely(!method)) goto bad;
    result = __Pyx_PyObject_Call(method, args, NULL);
    Py_DECREF(method);
bad:
    Py_DECREF(args);
    return result;
}

#define __Pyx_PyObject_CallMethod3(obj, name, arg1, arg2, arg3) \
    __Pyx_PyObject_CallMethodTuple(obj, name, PyTuple_Pack(3, arg1, arg2, arg3))
#define __Pyx_PyObject_CallMethod2(obj, name, arg1, arg2) \
    __Pyx_PyObject_CallMethodTuple(obj, name, PyTuple_Pack(2, arg1, arg2))
#define __Pyx_PyObject_CallMethod1(obj, name, arg1) \
    __Pyx_PyObject_CallMethodTuple(obj, name, PyTuple_Pack(1, arg1))
#define __Pyx_PyObject_CallMethod0(obj, name) \
    __Pyx_PyObject_CallMethodTuple(obj, name, (Py_INCREF($empty_tuple), $empty_tuple))


/////////////// tp_new.proto ///////////////

#define __Pyx_tp_new(type_obj, args) __Pyx_tp_new_kwargs(type_obj, args, NULL)
static CYTHON_INLINE PyObject* __Pyx_tp_new_kwargs(PyObject* type_obj, PyObject* args, PyObject* kwargs) {
    return (PyObject*) (((PyTypeObject*)type_obj)->tp_new((PyTypeObject*)type_obj, args, kwargs));
}


/////////////// PyObjectCall.proto ///////////////

#if CYTHON_COMPILING_IN_CPYTHON
static CYTHON_INLINE PyObject* __Pyx_PyObject_Call(PyObject *func, PyObject *arg, PyObject *kw); /*proto*/
#else
#define __Pyx_PyObject_Call(func, arg, kw) PyObject_Call(func, arg, kw)
#endif

/////////////// PyObjectCall ///////////////

#if CYTHON_COMPILING_IN_CPYTHON
static CYTHON_INLINE PyObject* __Pyx_PyObject_Call(PyObject *func, PyObject *arg, PyObject *kw) {
    PyObject *result;
    ternaryfunc call = func->ob_type->tp_call;

    if (unlikely(!call))
        return PyObject_Call(func, arg, kw);
#if PY_VERSION_HEX >= 0x02060000
    if (unlikely(Py_EnterRecursiveCall((char*)" while calling a Python object")))
        return NULL;
#endif
    result = (*call)(func, arg, kw);
#if PY_VERSION_HEX >= 0x02060000
    Py_LeaveRecursiveCall();
#endif
    if (unlikely(!result) && unlikely(!PyErr_Occurred())) {
        PyErr_SetString(
            PyExc_SystemError,
            "NULL result without error in PyObject_Call");
    }
    return result;
}
#endif