Mercurial > hg
annotate 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> |
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date | Mon, 31 Jul 2017 22:12:24 +0900 |
parents | 7640584e697c |
children | 0f4ac3b6dee4 |
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util.h: Utility macros for handling different Python APIs.
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1 /* |
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2 util.h - utility functions for interfacing with the various python APIs. |
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3 |
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4 This software may be used and distributed according to the terms of |
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5 the GNU General Public License, incorporated herein by reference. |
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6 */ |
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7 |
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8 #ifndef _HG_UTIL_H_ |
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9 #define _HG_UTIL_H_ |
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10 |
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11 #include "compat.h" |
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12 |
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13 #if PY_MAJOR_VERSION >= 3 |
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14 #define IS_PY3K |
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15 #endif |
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16 |
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17 typedef struct { |
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18 PyObject_HEAD |
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19 char state; |
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20 int mode; |
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21 int size; |
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22 int mtime; |
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23 } dirstateTupleObject; |
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24 |
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25 extern PyTypeObject dirstateTupleType; |
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26 #define dirstate_tuple_check(op) (Py_TYPE(op) == &dirstateTupleType) |
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27 |
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28 /* This should be kept in sync with normcasespecs in encoding.py. */ |
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29 enum normcase_spec { |
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30 NORMCASE_LOWER = -1, |
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31 NORMCASE_UPPER = 1, |
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32 NORMCASE_OTHER = 0 |
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33 }; |
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34 |
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35 #define MIN(a, b) (((a)<(b))?(a):(b)) |
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36 /* VC9 doesn't include bool and lacks stdbool.h based on my searching */ |
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37 #if defined(_MSC_VER) || __STDC_VERSION__ < 199901L |
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38 #define true 1 |
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39 #define false 0 |
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40 typedef unsigned char bool; |
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41 #else |
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42 #include <stdbool.h> |
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43 #endif |
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44 |
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cext: move _dict_new_presized() to header
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45 static inline PyObject *_dict_new_presized(Py_ssize_t expected_size) |
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46 { |
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47 /* _PyDict_NewPresized expects a minused parameter, but it actually |
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48 creates a dictionary that's the nearest power of two bigger than the |
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49 parameter. For example, with the initial minused = 1000, the |
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50 dictionary created has size 1024. Of course in a lot of cases that |
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51 can be greater than the maximum load factor Python's dict object |
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52 expects (= 2/3), so as soon as we cross the threshold we'll resize |
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53 anyway. So create a dictionary that's at least 3/2 the size. */ |
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54 return _PyDict_NewPresized(((1 + expected_size) / 2) * 3); |
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55 } |
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56 |
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57 static const int8_t hextable[256] = { |
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58 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
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59 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
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60 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
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61 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1, -1, -1, -1, /* 0-9 */ |
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62 -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* A-F */ |
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63 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
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64 -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* a-f */ |
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65 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
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66 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
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67 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
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68 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
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69 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
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70 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
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71 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
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72 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
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73 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 |
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74 }; |
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75 |
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76 static inline int hexdigit(const char *p, Py_ssize_t off) |
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77 { |
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78 int8_t val = hextable[(unsigned char)p[off]]; |
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79 |
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80 if (val >= 0) { |
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81 return val; |
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82 } |
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83 |
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84 PyErr_SetString(PyExc_ValueError, "input contains non-hex character"); |
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85 return 0; |
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86 } |
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87 |
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88 #endif /* _HG_UTIL_H_ */ |