author | Gregory Szorc <gregory.szorc@gmail.com> |
Sat, 26 Jan 2019 14:00:42 -0800 | |
changeset 41433 | f07aff7e8b5a |
parent 40645 | fa33196088c4 |
child 47539 | 84391ddf4c78 |
permissions | -rw-r--r-- |
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util.h: Utility macros for handling different Python APIs.
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/* |
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util.h - utility functions for interfacing with the various python APIs. |
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util.h: Utility macros for handling different 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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util.h: Utility macros for handling different Python APIs.
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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_ */ |