# abstract_.rs - source
Source of the Rust file `/home/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/pyo3-0.13.2/src/ffi/cpython/abstract_.rs`.
Keywords: rust, rustlang, rust-lang

      1
      2
      3
      4
      5
      6
      7
      8
      9
     10
     11
     12
     13
     14
     15
     16
     17
     18
     19
     20
     21
     22
     23
     24
     25
     26
     27
     28
     29
     30
     31
     32
     33
     34
     35
     36
     37
     38
     39
     40
     41
     42
     43
     44
     45
     46
     47
     48
     49
     50
     51
     52
     53
     54
     55
     56
     57
     58
     59
     60
     61
     62
     63
     64
     65
     66
     67
     68
     69
     70
     71
     72
     73
     74
     75
     76
     77
     78
     79
     80
     81
     82
     83
     84
     85
     86
     87
     88
     89
     90
     91
     92
     93
     94
     95
     96
     97
     98
     99
    100
    101
    102
    103
    104
    105
    106
    107
    108
    109
    110
    111
    112
    113
    114
    115
    116
    117
    118
    119
    120
    121
    122
    123
    124
    125
    126
    127
    128
    129
    130
    131
    132
    133
    134
    135
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    146
    147
    148
    149
    150
    151
    152
    153
    154
    155
    156
    157
    158
    159
    160
    161
    162
    163
    164
    165
    166
    167
    168
    169
    170
    171
    172
    173
    174
    175
    176
    177
    178
    179
    180
    181
    182
    183
    184
    185
    186
    187
    188
    189
    190
    191
    192
    193
    194
    195
    196
    197
    198
    199
    200
    201
    202
    203
    204
    205
    206
    207
    208
    209
    210
    211
    212
    213
    214
    215
    216
    217
    218
    219
    220
    221
    222
    223
    224
    225
    226
    227
    228
    229
    230
    231
    232
    233
    234
    235
    236
    237
    238
    239
    240
    241
    242
    243
    244
    245
    246
    247
    248
    249
    250
    251
    252
    253
    254
    255
    256
    257
    258
    259
    260
    261
    262
    263
    264
    265
    266
    267
    268
    269
    270
    271
    272
    273
    274
    275
    276
    277
    278
    279
    280
    281
    282
    283
    284
    285
    286
    287
    288
    289
    290
    291
    292
    293
    294
    295
    296
    297
    298
    299
    300
    301
    302
    303
    304
    305
    306
    307

    use crate::ffi::{PyObject, Py_buffer, Py_ssize_t};
    use std::os::raw::{c_char, c_int, c_void};

    #[cfg(all(Py_3_8, not(PyPy)))]
    use crate::ffi::{
        pyport::PY_SSIZE_T_MAX, vectorcallfunc, PyCallable_Check, PyThreadState, PyThreadState_GET,
        PyTuple_Check, PyType_HasFeature, Py_TPFLAGS_HAVE_VECTORCALL,
    };
    #[cfg(all(Py_3_8, not(PyPy)))]
    use libc::size_t;

    extern "C" {
        #[cfg(all(Py_3_8, not(PyPy)))]
        pub fn _PyStack_AsDict(values: *const *mut PyObject, kwnames: *mut PyObject) -> *mut PyObject;
    }

    #[cfg(all(Py_3_8, not(PyPy)))]
    const _PY_FASTCALL_SMALL_STACK: size_t = 5;

    extern "C" {
        #[cfg(all(Py_3_8, not(PyPy)))]
        pub fn _Py_CheckFunctionResult(
            tstate: *mut PyThreadState,
            callable: *mut PyObject,
            result: *mut PyObject,
            where_: *const c_char,
        ) -> *mut PyObject;

        #[cfg(all(Py_3_8, not(PyPy)))]
        pub fn _PyObject_MakeTpCall(
            tstate: *mut PyThreadState,
            callable: *mut PyObject,
            args: *const *mut PyObject,
            nargs: Py_ssize_t,
            keywords: *mut PyObject,
        ) -> *mut PyObject;
    }

    #[cfg(all(Py_3_8, not(PyPy)))]
    const PY_VECTORCALL_ARGUMENTS_OFFSET: Py_ssize_t =
        1 << (8 * std::mem::size_of::<Py_ssize_t>() as Py_ssize_t - 1);

    #[cfg(all(Py_3_8, not(PyPy)))]
    #[inline(always)]
    pub unsafe fn PyVectorcall_NARGS(n: size_t) -> Py_ssize_t {
        assert!(n <= (PY_SSIZE_T_MAX as size_t));
        (n as Py_ssize_t) & !PY_VECTORCALL_ARGUMENTS_OFFSET
    }

    #[cfg(all(Py_3_8, not(PyPy)))]
    #[inline(always)]
    pub unsafe fn PyVectorcall_Function(callable: *mut PyObject) -> Option<vectorcallfunc> {
        assert!(!callable.is_null());
        let tp = crate::ffi::Py_TYPE(callable);
        if PyType_HasFeature(tp, Py_TPFLAGS_HAVE_VECTORCALL) == 0 {
            return None;
        }
        assert!(PyCallable_Check(callable) > 0);
        let offset = (*tp).tp_vectorcall_offset;
        assert!(offset > 0);
        let ptr = (callable as *const c_char).offset(offset) as *const Option<vectorcallfunc>;
        *ptr
    }

    #[cfg(all(Py_3_8, not(PyPy)))]
    #[inline(always)]
    pub unsafe fn _PyObject_VectorcallTstate(
        tstate: *mut PyThreadState,
        callable: *mut PyObject,
        args: *const *mut PyObject,
        nargsf: size_t,
        kwnames: *mut PyObject,
    ) -> *mut PyObject {
        assert!(kwnames.is_null() || PyTuple_Check(kwnames) > 0);
        assert!(!args.is_null() || PyVectorcall_NARGS(nargsf) == 0);

        match PyVectorcall_Function(callable) {
            None => {
                let nargs = PyVectorcall_NARGS(nargsf);
                _PyObject_MakeTpCall(tstate, callable, args, nargs, kwnames)
            }
            Some(func) => {
                let res = func(callable, args, nargsf, kwnames);
                _Py_CheckFunctionResult(tstate, callable, res, std::ptr::null_mut())
            }
        }
    }

    #[cfg(all(Py_3_8, not(PyPy)))]
    #[inline(always)]
    pub unsafe fn PyObject_Vectorcall(
        callable: *mut PyObject,
        args: *const *mut PyObject,
        nargsf: size_t,
        kwnames: *mut PyObject,
    ) -> *mut PyObject {
        _PyObject_VectorcallTstate(PyThreadState_GET(), callable, args, nargsf, kwnames)
    }

    extern "C" {
        #[cfg(all(Py_3_8, not(PyPy)))]
        #[cfg_attr(not(Py_3_9), link_name = "_PyObject_VectorcallDict")]
        pub fn PyObject_VectorcallDict(
            callable: *mut PyObject,
            args: *const *mut PyObject,
            nargsf: size_t,
            kwargs: *mut PyObject,
        ) -> *mut PyObject;

        #[cfg(all(Py_3_8, not(PyPy)))]
        #[cfg_attr(not(Py_3_9), link_name = "_PyVectorcall_Call")]
        pub fn PyVectorcall_Call(
            callable: *mut PyObject,
            tuple: *mut PyObject,
            dict: *mut PyObject,
        ) -> *mut PyObject;
    }

    #[cfg(all(Py_3_8, not(PyPy)))]
    #[inline(always)]
    pub unsafe fn _PyObject_FastCallTstate(
        tstate: *mut PyThreadState,
        func: *mut PyObject,
        args: *const *mut PyObject,
        nargs: Py_ssize_t,
    ) -> *mut PyObject {
        _PyObject_VectorcallTstate(tstate, func, args, nargs as size_t, std::ptr::null_mut())
    }

    #[cfg(all(Py_3_8, not(PyPy)))]
    #[inline(always)]
    pub unsafe fn _PyObject_FastCall(
        func: *mut PyObject,
        args: *const *mut PyObject,
        nargs: Py_ssize_t,
    ) -> *mut PyObject {
        _PyObject_FastCallTstate(PyThreadState_GET(), func, args, nargs)
    }

    #[cfg(all(Py_3_8, not(PyPy)))]
    #[inline(always)]
    pub unsafe fn _PyObject_CallNoArg(func: *mut PyObject) -> *mut PyObject {
        _PyObject_VectorcallTstate(
            PyThreadState_GET(),
            func,
            std::ptr::null_mut(),
            0,
            std::ptr::null_mut(),
        )
    }

    #[cfg(all(Py_3_8, not(PyPy)))]
    #[inline(always)]
    pub unsafe fn PyObject_CallOneArg(func: *mut PyObject, arg: *mut PyObject) -> *mut PyObject {
        assert!(!arg.is_null());
        let _args = [std::ptr::null_mut(), arg];
        let args = _args.as_ptr().offset(1); // For PY_VECTORCALL_ARGUMENTS_OFFSET
        let tstate = PyThreadState_GET();
        let nargsf = 1 | PY_VECTORCALL_ARGUMENTS_OFFSET;
        _PyObject_VectorcallTstate(tstate, func, args, nargsf as size_t, std::ptr::null_mut())
    }

    extern "C" {
        #[cfg(all(Py_3_9, not(PyPy)))]
        pub fn PyObject_VectorcallMethod(
            name: *mut PyObject,
            args: *const *mut PyObject,
            nargsf: size_t,
            kwnames: *mut PyObject,
        ) -> *mut PyObject;
    }

    #[cfg(all(Py_3_9, not(PyPy)))]
    #[inline(always)]
    pub unsafe fn PyObject_CallMethodNoArgs(
        self_: *mut PyObject,
        name: *mut PyObject,
    ) -> *mut PyObject {
        PyObject_VectorcallMethod(
            name,
            &self_,
            1 | PY_VECTORCALL_ARGUMENTS_OFFSET as size_t,
            std::ptr::null_mut(),
        )
    }

    #[cfg(all(Py_3_9, not(PyPy)))]
    #[inline(always)]
    pub unsafe fn PyObject_CallMethodOneArg(
        self_: *mut PyObject,
        name: *mut PyObject,
        arg: *mut PyObject,
    ) -> *mut PyObject {
        let args = [self_, arg];
        assert!(!arg.is_null());
        PyObject_VectorcallMethod(
            name,
            args.as_ptr(),
            2 | PY_VECTORCALL_ARGUMENTS_OFFSET as size_t,
            std::ptr::null_mut(),
        )
    }

    // skipped _PyObject_VectorcallMethodId
    // skipped _PyObject_CallMethodIdNoArgs
    // skipped _PyObject_CallMethodIdOneArg

    // skipped _PyObject_HasLen

    extern "C" {
        #[cfg_attr(PyPy, link_name = "PyPyObject_LengthHint")]
        pub fn PyObject_LengthHint(o: *mut PyObject, arg1: Py_ssize_t) -> Py_ssize_t;

        #[cfg(all(Py_3_9, not(PyPy)))]
        pub fn PyObject_CheckBuffer(obj: *mut PyObject) -> c_int;
    }

    #[cfg(not(any(Py_3_9, PyPy)))]
    #[inline]
    pub unsafe fn PyObject_CheckBuffer(o: *mut PyObject) -> c_int {
        let tp_as_buffer = (*crate::ffi::Py_TYPE(o)).tp_as_buffer;
        (!tp_as_buffer.is_null() && (*tp_as_buffer).bf_getbuffer.is_some()) as c_int
    }

    extern "C" {
        #[cfg_attr(PyPy, link_name = "PyPyObject_GetBuffer")]
        pub fn PyObject_GetBuffer(obj: *mut PyObject, view: *mut Py_buffer, flags: c_int) -> c_int;
        #[cfg_attr(PyPy, link_name = "PyPyBuffer_GetPointer")]
        pub fn PyBuffer_GetPointer(view: *mut Py_buffer, indices: *mut Py_ssize_t) -> *mut c_void;
        #[cfg_attr(PyPy, link_name = "PyPyBuffer_SizeFromFormat")]
        pub fn PyBuffer_SizeFromFormat(format: *const c_char) -> Py_ssize_t;
        #[cfg_attr(PyPy, link_name = "PyPyBuffer_ToContiguous")]
        pub fn PyBuffer_ToContiguous(
            buf: *mut c_void,
            view: *mut Py_buffer,
            len: Py_ssize_t,
            order: c_char,
        ) -> c_int;
        #[cfg_attr(PyPy, link_name = "PyPyBuffer_FromContiguous")]
        pub fn PyBuffer_FromContiguous(
            view: *mut Py_buffer,
            buf: *mut c_void,
            len: Py_ssize_t,
            order: c_char,
        ) -> c_int;
        pub fn PyObject_CopyData(dest: *mut PyObject, src: *mut PyObject) -> c_int;
        #[cfg_attr(PyPy, link_name = "PyPyBuffer_IsContiguous")]
        pub fn PyBuffer_IsContiguous(view: *const Py_buffer, fort: c_char) -> c_int;
        pub fn PyBuffer_FillContiguousStrides(
            ndims: c_int,
            shape: *mut Py_ssize_t,
            strides: *mut Py_ssize_t,
            itemsize: c_int,
            fort: c_char,
        );
        #[cfg_attr(PyPy, link_name = "PyPyBuffer_FillInfo")]
        pub fn PyBuffer_FillInfo(
            view: *mut Py_buffer,
            o: *mut PyObject,
            buf: *mut c_void,
            len: Py_ssize_t,
            readonly: c_int,
            flags: c_int,
        ) -> c_int;
        #[cfg_attr(PyPy, link_name = "PyPyBuffer_Release")]
        pub fn PyBuffer_Release(view: *mut Py_buffer);
    }

    #[inline]
    #[cfg(not(any(all(Py_3_8, Py_LIMITED_API), PyPy)))]
    pub unsafe fn PyIter_Check(o: *mut PyObject) -> c_int {
        (match (*crate::ffi::Py_TYPE(o)).tp_iternext {
            Some(tp_iternext) => {
                tp_iternext as *const c_void != crate::ffi::object::_PyObject_NextNotImplemented as _
            }
            None => false,
        }) as c_int
    }

    // skipped PySequence_ITEM

    pub const PY_ITERSEARCH_COUNT: c_int = 1;
    pub const PY_ITERSEARCH_INDEX: c_int = 2;
    pub const PY_ITERSEARCH_CONTAINS: c_int = 3;

    extern "C" {
        #[cfg(not(PyPy))]
        pub fn _PySequence_IterSearch(
            seq: *mut PyObject,
            obj: *mut PyObject,
            operation: c_int,
        ) -> Py_ssize_t;
    }

    // skipped _PyObject_RealIsInstance
    // skipped _PyObject_RealIsSubclass

    // skipped _PySequence_BytesToCharpArray

    // skipped _Py_FreeCharPArray

    // skipped _Py_add_one_to_index_F
    // skipped _Py_add_one_to_index_C

    // skipped _Py_convert_optional_to_ssize_t

    // skipped _PyNumber_Index(*mut PyObject o)