Mercurial > hg
view mercurial/cext/util.h @ 33756:5866ba5e9c48
cext: move _dict_new_presized() to header
Prepares for splitting encoding functions from parsers.c.
author | Yuya Nishihara <yuya@tcha.org> |
---|---|
date | Mon, 31 Jul 2017 22:12:24 +0900 |
parents | 7640584e697c |
children | 0f4ac3b6dee4 |
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/* 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) /* This should be kept in sync with normcasespecs in encoding.py. */ enum normcase_spec { NORMCASE_LOWER = -1, NORMCASE_UPPER = 1, NORMCASE_OTHER = 0 }; #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); } static const int8_t hextable[256] = { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1, -1, -1, -1, /* 0-9 */ -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* A-F */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* a-f */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }; static inline int hexdigit(const char *p, Py_ssize_t off) { int8_t val = hextable[(unsigned char)p[off]]; if (val >= 0) { return val; } PyErr_SetString(PyExc_ValueError, "input contains non-hex character"); return 0; } #endif /* _HG_UTIL_H_ */