cpython/Modules/hashlib.h at fe8440aec00af5bc2e995aaad205efa2e693a364 · python/cpython · GitHub

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/* Common code for use by all hashlib related modules. */

* Given a PyObject* obj, fill in the Py_buffer* viewp with the result

* of PyObject_GetBuffer. Sets and exception and issues a return NULL

* on any errors.

#define GET_BUFFER_VIEW_OR_ERROUT(obj, viewp) do { \

if (PyUnicode_Check((obj))) { \

PyErr_SetString(PyExc_TypeError, \

"Unicode-objects must be encoded before hashing");\

return NULL; \

} \

if (!PyObject_CheckBuffer((obj))) { \

PyErr_SetString(PyExc_TypeError, \

"object supporting the buffer API required"); \

return NULL; \

} \

if (PyObject_GetBuffer((obj), (viewp), PyBUF_SIMPLE) == -1) { \

return NULL; \

} \

if ((viewp)->ndim > 1) { \

PyErr_SetString(PyExc_BufferError, \

"Buffer must be single dimension"); \

PyBuffer_Release((viewp)); \

return NULL; \

} \

} while(0);