/*

 util.h - utility functions for interfacing with the various python APIs.

 This software may be used and distributed according to the terms of

 the GNU General Public License, incorporated herein by reference.

*/

#ifndef _HG_UTIL_H_

#define _HG_UTIL_H_

#include "compat.h"

#if PY_MAJOR_VERSION >= 3

#define IS_PY3K

#endif

typedef struct {

	PyObject_HEAD

	char state;

	int mode;

	int size;

	int mtime;

} dirstateTupleObject;

extern PyTypeObject dirstateTupleType;

#define dirstate_tuple_check(op) (Py_TYPE(op) == &dirstateTupleType)

#define MIN(a, b) (((a)<(b))?(a):(b))

/* VC9 doesn't include bool and lacks stdbool.h based on my searching */

#if defined(_MSC_VER) || __STDC_VERSION__ < 199901L

#define true 1

#define false 0

typedef unsigned char bool;

#else

#include <stdbool.h>

#endif

static inline PyObject *_dict_new_presized(Py_ssize_t expected_size)

{

	/* _PyDict_NewPresized expects a minused parameter, but it actually

	   creates a dictionary that's the nearest power of two bigger than the

	   parameter. For example, with the initial minused = 1000, the

	   dictionary created has size 1024. Of course in a lot of cases that

	   can be greater than the maximum load factor Python's dict object

	   expects (= 2/3), so as soon as we cross the threshold we'll resize

	   anyway. So create a dictionary that's at least 3/2 the size. */

	return _PyDict_NewPresized(((1 + expected_size) / 2) * 3);

}

#endif /* _HG_UTIL_H_ */