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#ifndef NUMPY_CORE_SRC_MULTIARRAY_ARRAY_COERCION_H_
#define NUMPY_CORE_SRC_MULTIARRAY_ARRAY_COERCION_H_
/*
* We do not want to coerce arrays many times unless absolutely necessary.
* The same goes for sequences, so everything we have seen, we will have
* to store somehow. This is a linked list of these objects.
*/
typedef struct coercion_cache_obj {
PyObject *converted_obj;
PyObject *arr_or_sequence;
struct coercion_cache_obj *next;
npy_bool sequence;
int depth; /* the dimension at which this object was found. */
} coercion_cache_obj;
NPY_NO_EXPORT int
_PyArray_MapPyTypeToDType(
PyArray_DTypeMeta *DType, PyTypeObject *pytype, npy_bool userdef);
NPY_NO_EXPORT PyObject *
PyArray_DiscoverDTypeFromScalarType(PyTypeObject *pytype);
NPY_NO_EXPORT int
PyArray_Pack(PyArray_Descr *descr, char *item, PyObject *value);
NPY_NO_EXPORT PyArray_Descr *
PyArray_AdaptDescriptorToArray(PyArrayObject *arr, PyObject *dtype);
NPY_NO_EXPORT int
PyArray_DiscoverDTypeAndShape(
PyObject *obj, int max_dims,
npy_intp out_shape[NPY_MAXDIMS],
coercion_cache_obj **coercion_cache,
PyArray_DTypeMeta *fixed_DType, PyArray_Descr *requested_descr,
PyArray_Descr **out_descr, int never_copy);
NPY_NO_EXPORT int
PyArray_ExtractDTypeAndDescriptor(PyObject *dtype,
PyArray_Descr **out_descr, PyArray_DTypeMeta **out_DType);
NPY_NO_EXPORT PyObject *
_discover_array_parameters(PyObject *NPY_UNUSED(self),
PyObject *args, PyObject *kwargs);
/* Would make sense to inline the freeing functions everywhere */
/* Frees the coercion cache object recursively. */
NPY_NO_EXPORT void
npy_free_coercion_cache(coercion_cache_obj *first);
/* unlink a single item and return the next */
NPY_NO_EXPORT coercion_cache_obj *
npy_unlink_coercion_cache(coercion_cache_obj *current);
NPY_NO_EXPORT int
PyArray_AssignFromCache(PyArrayObject *self, coercion_cache_obj *cache);
#endif /* NUMPY_CORE_SRC_MULTIARRAY_ARRAY_COERCION_H_ */
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