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npy_3kcompat.h
/* * This is a convenience header file providing compatibility utilities * for supporting different minor versions of Python 3. * It was originally used to support the transition from Python 2, * hence the "3k" naming. * * If you want to use this for your own projects, it's recommended to make a * copy of it. Although the stuff below is unlikely to change, we don't provide * strong backwards compatibility guarantees at the moment. */ #ifndef NUMPY_CORE_INCLUDE_NUMPY_NPY_3KCOMPAT_H_ #define NUMPY_CORE_INCLUDE_NUMPY_NPY_3KCOMPAT_H_ #include <Python.h> #include <stdio.h> #ifndef NPY_PY3K #define NPY_PY3K 1 #endif #include "numpy/npy_common.h" #include "numpy/ndarrayobject.h" #ifdef __cplusplus extern "C" { #endif /* * PyInt -> PyLong */ /* * This is a renamed copy of the Python non-limited API function _PyLong_AsInt. It is * included here because it is missing from the PyPy API. It completes the PyLong_As* * group of functions and can be useful in replacing PyInt_Check. */ static inline int Npy__PyLong_AsInt(PyObject *obj) { int overflow; long result = PyLong_AsLongAndOverflow(obj, &overflow); /* INT_MAX and INT_MIN are defined in Python.h */ if (overflow || result > INT_MAX || result < INT_MIN) { /* XXX: could be cute and give a different message for overflow == -1 */ PyErr_SetString(PyExc_OverflowError, "Python int too large to convert to C int"); return -1; } return (int)result; } #if defined(NPY_PY3K) /* Return True only if the long fits in a C long */ static inline int PyInt_Check(PyObject *op) { int overflow = 0; if (!PyLong_Check(op)) { return 0; } PyLong_AsLongAndOverflow(op, &overflow); return (overflow == 0); } #define PyInt_FromLong PyLong_FromLong #define PyInt_AsLong PyLong_AsLong #define PyInt_AS_LONG PyLong_AsLong #define PyInt_AsSsize_t PyLong_AsSsize_t #define PyNumber_Int PyNumber_Long /* NOTE: * * Since the PyLong type is very different from the fixed-range PyInt, * we don't define PyInt_Type -> PyLong_Type. */ #endif /* NPY_PY3K */ /* Py3 changes PySlice_GetIndicesEx' first argument's type to PyObject* */ #ifdef NPY_PY3K # define NpySlice_GetIndicesEx PySlice_GetIndicesEx #else # define NpySlice_GetIndicesEx(op, nop, start, end, step, slicelength) \ PySlice_GetIndicesEx((PySliceObject *)op, nop, start, end, step, slicelength) #endif #if PY_VERSION_HEX < 0x030900a4 /* Introduced in https://github.com/python/cpython/commit/d2ec81a8c99796b51fb8c49b77a7fe369863226f */ #define Py_SET_TYPE(obj, type) ((Py_TYPE(obj) = (type)), (void)0) /* Introduced in https://github.com/python/cpython/commit/b10dc3e7a11fcdb97e285882eba6da92594f90f9 */ #define Py_SET_SIZE(obj, size) ((Py_SIZE(obj) = (size)), (void)0) /* Introduced in https://github.com/python/cpython/commit/c86a11221df7e37da389f9c6ce6e47ea22dc44ff */ #define Py_SET_REFCNT(obj, refcnt) ((Py_REFCNT(obj) = (refcnt)), (void)0) #endif #define Npy_EnterRecursiveCall(x) Py_EnterRecursiveCall(x) /* * PyString -> PyBytes */ #if defined(NPY_PY3K) #define PyString_Type PyBytes_Type #define PyString_Check PyBytes_Check #define PyStringObject PyBytesObject #define PyString_FromString PyBytes_FromString #define PyString_FromStringAndSize PyBytes_FromStringAndSize #define PyString_AS_STRING PyBytes_AS_STRING #define PyString_AsStringAndSize PyBytes_AsStringAndSize #define PyString_FromFormat PyBytes_FromFormat #define PyString_Concat PyBytes_Concat #define PyString_ConcatAndDel PyBytes_ConcatAndDel #define PyString_AsString PyBytes_AsString #define PyString_GET_SIZE PyBytes_GET_SIZE #define PyString_Size PyBytes_Size #define PyUString_Type PyUnicode_Type #define PyUString_Check PyUnicode_Check #define PyUStringObject PyUnicodeObject #define PyUString_FromString PyUnicode_FromString #define PyUString_FromStringAndSize PyUnicode_FromStringAndSize #define PyUString_FromFormat PyUnicode_FromFormat #define PyUString_Concat PyUnicode_Concat2 #define PyUString_ConcatAndDel PyUnicode_ConcatAndDel #define PyUString_GET_SIZE PyUnicode_GET_SIZE #define PyUString_Size PyUnicode_Size #define PyUString_InternFromString PyUnicode_InternFromString #define PyUString_Format PyUnicode_Format #define PyBaseString_Check(obj) (PyUnicode_Check(obj)) #else #define PyBytes_Type PyString_Type #define PyBytes_Check PyString_Check #define PyBytesObject PyStringObject #define PyBytes_FromString PyString_FromString #define PyBytes_FromStringAndSize PyString_FromStringAndSize #define PyBytes_AS_STRING PyString_AS_STRING #define PyBytes_AsStringAndSize PyString_AsStringAndSize #define PyBytes_FromFormat PyString_FromFormat #define PyBytes_Concat PyString_Concat #define PyBytes_ConcatAndDel PyString_ConcatAndDel #define PyBytes_AsString PyString_AsString #define PyBytes_GET_SIZE PyString_GET_SIZE #define PyBytes_Size PyString_Size #define PyUString_Type PyString_Type #define PyUString_Check PyString_Check #define PyUStringObject PyStringObject #define PyUString_FromString PyString_FromString #define PyUString_FromStringAndSize PyString_FromStringAndSize #define PyUString_FromFormat PyString_FromFormat #define PyUString_Concat PyString_Concat #define PyUString_ConcatAndDel PyString_ConcatAndDel #define PyUString_GET_SIZE PyString_GET_SIZE #define PyUString_Size PyString_Size #define PyUString_InternFromString PyString_InternFromString #define PyUString_Format PyString_Format #define PyBaseString_Check(obj) (PyBytes_Check(obj) || PyUnicode_Check(obj)) #endif /* NPY_PY3K */ /* * Macros to protect CRT calls against instant termination when passed an * invalid parameter (https://bugs.python.org/issue23524). */ #if defined _MSC_VER && _MSC_VER >= 1900 #include <stdlib.h> extern _invalid_parameter_handler _Py_silent_invalid_parameter_handler; #define NPY_BEGIN_SUPPRESS_IPH { _invalid_parameter_handler _Py_old_handler = \ _set_thread_local_invalid_parameter_handler(_Py_silent_invalid_parameter_handler); #define NPY_END_SUPPRESS_IPH _set_thread_local_invalid_parameter_handler(_Py_old_handler); } #else #define NPY_BEGIN_SUPPRESS_IPH #define NPY_END_SUPPRESS_IPH #endif /* _MSC_VER >= 1900 */ static inline void PyUnicode_ConcatAndDel(PyObject **left, PyObject *right) { Py_SETREF(*left, PyUnicode_Concat(*left, right)); Py_DECREF(right); } static inline void PyUnicode_Concat2(PyObject **left, PyObject *right) { Py_SETREF(*left, PyUnicode_Concat(*left, right)); } /* * PyFile_* compatibility */ /* * Get a FILE* handle to the file represented by the Python object */ static inline FILE* npy_PyFile_Dup2(PyObject *file, char *mode, npy_off_t *orig_pos) { int fd, fd2, unbuf; Py_ssize_t fd2_tmp; PyObject *ret, *os, *io, *io_raw; npy_off_t pos; FILE *handle; /* For Python 2 PyFileObject, use PyFile_AsFile */ #if !defined(NPY_PY3K) if (PyFile_Check(file)) { return PyFile_AsFile(file); } #endif /* Flush first to ensure things end up in the file in the correct order */ ret = PyObject_CallMethod(file, "flush", ""); if (ret == NULL) { return NULL; } Py_DECREF(ret); fd = PyObject_AsFileDescriptor(file); if (fd == -1) { return NULL; } /* * The handle needs to be dup'd because we have to call fclose * at the end */ os = PyImport_ImportModule("os"); if (os == NULL) { return NULL; } ret = PyObject_CallMethod(os, "dup", "i", fd); Py_DECREF(os); if (ret == NULL) { return NULL; } fd2_tmp = PyNumber_AsSsize_t(ret, PyExc_IOError); Py_DECREF(ret); if (fd2_tmp == -1 && PyErr_Occurred()) { return NULL; } if (fd2_tmp < INT_MIN || fd2_tmp > INT_MAX) { PyErr_SetString(PyExc_IOError, "Getting an 'int' from os.dup() failed"); return NULL; } fd2 = (int)fd2_tmp; /* Convert to FILE* handle */ #ifdef _WIN32 NPY_BEGIN_SUPPRESS_IPH handle = _fdopen(fd2, mode); NPY_END_SUPPRESS_IPH #else handle = fdopen(fd2, mode); #endif if (handle == NULL) { PyErr_SetString(PyExc_IOError, "Getting a FILE* from a Python file object via " "_fdopen failed. If you built NumPy, you probably " "linked with the wrong debug/release runtime"); return NULL; } /* Record the original raw file handle position */ *orig_pos = npy_ftell(handle); if (*orig_pos == -1) { /* The io module is needed to determine if buffering is used */ io = PyImport_ImportModule("io"); if (io == NULL) { fclose(handle); return NULL; } /* File object instances of RawIOBase are unbuffered */ io_raw = PyObject_GetAttrString(io, "RawIOBase"); Py_DECREF(io); if (io_raw == NULL) { fclose(handle); return NULL; } unbuf = PyObject_IsInstance(file, io_raw); Py_DECREF(io_raw); if (unbuf == 1) { /* Succeed if the IO is unbuffered */ return handle; } else { PyErr_SetString(PyExc_IOError, "obtaining file position failed"); fclose(handle); return NULL; } } /* Seek raw handle to the Python-side position */ ret = PyObject_CallMethod(file, "tell", ""); if (ret == NULL) { fclose(handle); return NULL; } pos = PyLong_AsLongLong(ret); Py_DECREF(ret); if (PyErr_Occurred()) { fclose(handle); return NULL; } if (npy_fseek(handle, pos, SEEK_SET) == -1) { PyErr_SetString(PyExc_IOError, "seeking file failed"); fclose(handle); return NULL; } return handle; } /* * Close the dup-ed file handle, and seek the Python one to the current position */ static inline int npy_PyFile_DupClose2(PyObject *file, FILE* handle, npy_off_t orig_pos) { int fd, unbuf; PyObject *ret, *io, *io_raw; npy_off_t position; /* For Python 2 PyFileObject, do nothing */ #if !defined(NPY_PY3K) if (PyFile_Check(file)) { return 0; } #endif position = npy_ftell(handle); /* Close the FILE* handle */ fclose(handle); /* * Restore original file handle position, in order to not confuse * Python-side data structures */ fd = PyObject_AsFileDescriptor(file); if (fd == -1) { return -1; } if (npy_lseek(fd, orig_pos, SEEK_SET) == -1) { /* The io module is needed to determine if buffering is used */ io = PyImport_ImportModule("io"); if (io == NULL) { return -1; } /* File object instances of RawIOBase are unbuffered */ io_raw = PyObject_GetAttrString(io, "RawIOBase"); Py_DECREF(io); if (io_raw == NULL) { return -1; } unbuf = PyObject_IsInstance(file, io_raw); Py_DECREF(io_raw); if (unbuf == 1) { /* Succeed if the IO is unbuffered */ return 0; } else { PyErr_SetString(PyExc_IOError, "seeking file failed"); return -1; } } if (position == -1) { PyErr_SetString(PyExc_IOError, "obtaining file position failed"); return -1; } /* Seek Python-side handle to the FILE* handle position */ ret = PyObject_CallMethod(file, "seek", NPY_OFF_T_PYFMT "i", position, 0); if (ret == NULL) { return -1; } Py_DECREF(ret); return 0; } static inline int npy_PyFile_Check(PyObject *file) { int fd; /* For Python 2, check if it is a PyFileObject */ #if !defined(NPY_PY3K) if (PyFile_Check(file)) { return 1; } #endif fd = PyObject_AsFileDescriptor(file); if (fd == -1) { PyErr_Clear(); return 0; } return 1; } static inline PyObject* npy_PyFile_OpenFile(PyObject *filename, const char *mode) { PyObject *open; open = PyDict_GetItemString(PyEval_GetBuiltins(), "open"); if (open == NULL) { return NULL; } return PyObject_CallFunction(open, "Os", filename, mode); } static inline int npy_PyFile_CloseFile(PyObject *file) { PyObject *ret; ret = PyObject_CallMethod(file, "close", NULL); if (ret == NULL) { return -1; } Py_DECREF(ret); return 0; } /* This is a copy of _PyErr_ChainExceptions */ static inline void npy_PyErr_ChainExceptions(PyObject *exc, PyObject *val, PyObject *tb) { if (exc == NULL) return; if (PyErr_Occurred()) { /* only py3 supports this anyway */ #ifdef NPY_PY3K PyObject *exc2, *val2, *tb2; PyErr_Fetch(&exc2, &val2, &tb2); PyErr_NormalizeException(&exc, &val, &tb); if (tb != NULL) { PyException_SetTraceback(val, tb); Py_DECREF(tb); } Py_DECREF(exc); PyErr_NormalizeException(&exc2, &val2, &tb2); PyException_SetContext(val2, val); PyErr_Restore(exc2, val2, tb2); #endif } else { PyErr_Restore(exc, val, tb); } } /* This is a copy of _PyErr_ChainExceptions, with: * - a minimal implementation for python 2 * - __cause__ used instead of __context__ */ static inline void npy_PyErr_ChainExceptionsCause(PyObject *exc, PyObject *val, PyObject *tb) { if (exc == NULL) return; if (PyErr_Occurred()) { /* only py3 supports this anyway */ #ifdef NPY_PY3K PyObject *exc2, *val2, *tb2; PyErr_Fetch(&exc2, &val2, &tb2); PyErr_NormalizeException(&exc, &val, &tb); if (tb != NULL) { PyException_SetTraceback(val, tb); Py_DECREF(tb); } Py_DECREF(exc); PyErr_NormalizeException(&exc2, &val2, &tb2); PyException_SetCause(val2, val); PyErr_Restore(exc2, val2, tb2); #endif } else { PyErr_Restore(exc, val, tb); } } /* * PyObject_Cmp */ #if defined(NPY_PY3K) static inline int PyObject_Cmp(PyObject *i1, PyObject *i2, int *cmp) { int v; v = PyObject_RichCompareBool(i1, i2, Py_LT); if (v == 1) { *cmp = -1; return 1; } else if (v == -1) { return -1; } v = PyObject_RichCompareBool(i1, i2, Py_GT); if (v == 1) { *cmp = 1; return 1; } else if (v == -1) { return -1; } v = PyObject_RichCompareBool(i1, i2, Py_EQ); if (v == 1) { *cmp = 0; return 1; } else { *cmp = 0; return -1; } } #endif /* * PyCObject functions adapted to PyCapsules. * * The main job here is to get rid of the improved error handling * of PyCapsules. It's a shame... */ static inline PyObject * NpyCapsule_FromVoidPtr(void *ptr, void (*dtor)(PyObject *)) { PyObject *ret = PyCapsule_New(ptr, NULL, dtor); if (ret == NULL) { PyErr_Clear(); } return ret; } static inline PyObject * NpyCapsule_FromVoidPtrAndDesc(void *ptr, void* context, void (*dtor)(PyObject *)) { PyObject *ret = NpyCapsule_FromVoidPtr(ptr, dtor); if (ret != NULL && PyCapsule_SetContext(ret, context) != 0) { PyErr_Clear(); Py_DECREF(ret); ret = NULL; } return ret; } static inline void * NpyCapsule_AsVoidPtr(PyObject *obj) { void *ret = PyCapsule_GetPointer(obj, NULL); if (ret == NULL) { PyErr_Clear(); } return ret; } static inline void * NpyCapsule_GetDesc(PyObject *obj) { return PyCapsule_GetContext(obj); } static inline int NpyCapsule_Check(PyObject *ptr) { return PyCapsule_CheckExact(ptr); } #ifdef __cplusplus } #endif #endif /* NUMPY_CORE_INCLUDE_NUMPY_NPY_3KCOMPAT_H_ */
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