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/*
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util.h - utility functions for interfacing with the various python APIs.
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This software may be used and distributed according to the terms of
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the GNU General Public License, incorporated herein by reference.
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*/
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#ifndef _HG_UTIL_H_
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#define _HG_UTIL_H_
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#include "compat.h"
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#if PY_MAJOR_VERSION >= 3
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#define IS_PY3K
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#endif
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/* helper to switch things like string literal depending on Python version */
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#ifdef IS_PY3K
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#define PY23(py2, py3) py3
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#else
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#define PY23(py2, py3) py2
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#endif
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/* clang-format off */
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typedef struct {
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PyObject_HEAD
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char state;
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int mode;
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int size;
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int mtime;
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} dirstateTupleObject;
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/* clang-format on */
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extern PyTypeObject dirstateTupleType;
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#define dirstate_tuple_check(op) (Py_TYPE(op) == &dirstateTupleType)
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#ifndef MIN
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#define MIN(a, b) (((a) < (b)) ? (a) : (b))
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#endif
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/* VC9 doesn't include bool and lacks stdbool.h based on my searching */
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#if defined(_MSC_VER) || __STDC_VERSION__ < 199901L
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#define true 1
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#define false 0
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typedef unsigned char bool;
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#else
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#include <stdbool.h>
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#endif
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static inline PyObject *_dict_new_presized(Py_ssize_t expected_size)
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{
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/* _PyDict_NewPresized expects a minused parameter, but it actually
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creates a dictionary that's the nearest power of two bigger than the
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parameter. For example, with the initial minused = 1000, the
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dictionary created has size 1024. Of course in a lot of cases that
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can be greater than the maximum load factor Python's dict object
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expects (= 2/3), so as soon as we cross the threshold we'll resize
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anyway. So create a dictionary that's at least 3/2 the size. */
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return _PyDict_NewPresized(((1 + expected_size) / 2) * 3);
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}
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/* Convert a PyInt or PyLong to a long. Returns false if there is an
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error, in which case an exception will already have been set. */
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static inline bool pylong_to_long(PyObject *pylong, long *out)
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{
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*out = PyLong_AsLong(pylong);
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/* Fast path to avoid hitting PyErr_Occurred if the value was obviously
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* not an error. */
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if (*out != -1) {
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return true;
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}
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return PyErr_Occurred() == NULL;
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}
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#endif /* _HG_UTIL_H_ */
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