Raymond Hettinger | c991db2 | 2005-08-11 07:58:45 +0000 | [diff] [blame] | 1 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2 | /* set object implementation |
Raymond Hettinger | ae7b00e | 2013-09-07 15:05:00 -0700 | [diff] [blame] | 3 | |
Raymond Hettinger | a9d9936 | 2005-08-05 00:01:15 +0000 | [diff] [blame] | 4 | Written and maintained by Raymond D. Hettinger <python@rcn.com> |
| 5 | Derived from Lib/sets.py and Objects/dictobject.c. |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 6 | |
Raymond Hettinger | ae7b00e | 2013-09-07 15:05:00 -0700 | [diff] [blame] | 7 | The basic lookup function used by all operations. |
| 8 | This is based on Algorithm D from Knuth Vol. 3, Sec. 6.4. |
| 9 | |
| 10 | The initial probe index is computed as hash mod the table size. |
| 11 | Subsequent probe indices are computed as explained in Objects/dictobject.c. |
| 12 | |
| 13 | To improve cache locality, each probe inspects a series of consecutive |
| 14 | nearby entries before moving on to probes elsewhere in memory. This leaves |
Raymond Hettinger | 64263df | 2017-09-04 18:54:16 -0700 | [diff] [blame] | 15 | us with a hybrid of linear probing and randomized probing. The linear probing |
Raymond Hettinger | ae7b00e | 2013-09-07 15:05:00 -0700 | [diff] [blame] | 16 | reduces the cost of hash collisions because consecutive memory accesses |
| 17 | tend to be much cheaper than scattered probes. After LINEAR_PROBES steps, |
Raymond Hettinger | 64263df | 2017-09-04 18:54:16 -0700 | [diff] [blame] | 18 | we then use more of the upper bits from the hash value and apply a simple |
| 19 | linear congruential random number genearator. This helps break-up long |
| 20 | chains of collisions. |
Raymond Hettinger | ae7b00e | 2013-09-07 15:05:00 -0700 | [diff] [blame] | 21 | |
| 22 | All arithmetic on hash should ignore overflow. |
| 23 | |
Raymond Hettinger | 4d45c10 | 2015-01-25 16:27:40 -0800 | [diff] [blame] | 24 | Unlike the dictionary implementation, the lookkey function can return |
Raymond Hettinger | ae7b00e | 2013-09-07 15:05:00 -0700 | [diff] [blame] | 25 | NULL if the rich comparison returns an error. |
Serhiy Storchaka | 13ad3b7 | 2017-09-14 09:38:36 +0300 | [diff] [blame] | 26 | |
Raymond Hettinger | 64263df | 2017-09-04 18:54:16 -0700 | [diff] [blame] | 27 | Use cases for sets differ considerably from dictionaries where looked-up |
| 28 | keys are more likely to be present. In contrast, sets are primarily |
| 29 | about membership testing where the presence of an element is not known in |
| 30 | advance. Accordingly, the set implementation needs to optimize for both |
| 31 | the found and not-found case. |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 32 | */ |
| 33 | |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 34 | #include "Python.h" |
Victor Stinner | 621cebe | 2018-11-12 16:53:38 +0100 | [diff] [blame^] | 35 | #include "pycore_pystate.h" |
Raymond Hettinger | a9d9936 | 2005-08-05 00:01:15 +0000 | [diff] [blame] | 36 | #include "structmember.h" |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 37 | |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 38 | /* Object used as dummy key to fill deleted entries */ |
Raymond Hettinger | bfc1e1a | 2013-08-23 03:22:15 -0500 | [diff] [blame] | 39 | static PyObject _dummy_struct; |
| 40 | |
| 41 | #define dummy (&_dummy_struct) |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 42 | |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 43 | |
Raymond Hettinger | 04fd9dd | 2013-09-07 17:41:01 -0700 | [diff] [blame] | 44 | /* ======================================================================== */ |
| 45 | /* ======= Begin logic for probing the hash table ========================= */ |
| 46 | |
Raymond Hettinger | 710a67e | 2013-09-21 20:17:31 -0700 | [diff] [blame] | 47 | /* Set this to zero to turn-off linear probing */ |
Raymond Hettinger | 8408dc5 | 2013-09-15 14:57:15 -0700 | [diff] [blame] | 48 | #ifndef LINEAR_PROBES |
Raymond Hettinger | 742d871 | 2013-09-08 00:25:57 -0700 | [diff] [blame] | 49 | #define LINEAR_PROBES 9 |
Raymond Hettinger | 8408dc5 | 2013-09-15 14:57:15 -0700 | [diff] [blame] | 50 | #endif |
Raymond Hettinger | 742d871 | 2013-09-08 00:25:57 -0700 | [diff] [blame] | 51 | |
| 52 | /* This must be >= 1 */ |
| 53 | #define PERTURB_SHIFT 5 |
| 54 | |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 55 | static setentry * |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 56 | set_lookkey(PySetObject *so, PyObject *key, Py_hash_t hash) |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 57 | { |
Raymond Hettinger | 70559b5 | 2015-07-23 07:42:23 -0400 | [diff] [blame] | 58 | setentry *table; |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 59 | setentry *entry; |
Raymond Hettinger | 38bb95e | 2015-06-24 01:22:19 -0700 | [diff] [blame] | 60 | size_t perturb; |
Raymond Hettinger | afe8909 | 2013-08-28 20:59:31 -0700 | [diff] [blame] | 61 | size_t mask = so->mask; |
Raymond Hettinger | 59ecabd | 2015-01-31 02:45:12 -0800 | [diff] [blame] | 62 | size_t i = (size_t)hash & mask; /* Unsigned for defined overflow behavior */ |
Raymond Hettinger | 8408dc5 | 2013-09-15 14:57:15 -0700 | [diff] [blame] | 63 | size_t j; |
Raymond Hettinger | 4ef0528 | 2013-09-21 15:39:49 -0700 | [diff] [blame] | 64 | int cmp; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 65 | |
Raymond Hettinger | 70559b5 | 2015-07-23 07:42:23 -0400 | [diff] [blame] | 66 | entry = &so->table[i]; |
Raymond Hettinger | afe8909 | 2013-08-28 20:59:31 -0700 | [diff] [blame] | 67 | if (entry->key == NULL) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 68 | return entry; |
Raymond Hettinger | 237b34b | 2013-08-17 02:31:53 -0700 | [diff] [blame] | 69 | |
Raymond Hettinger | 38bb95e | 2015-06-24 01:22:19 -0700 | [diff] [blame] | 70 | perturb = hash; |
| 71 | |
Raymond Hettinger | 3c0a4f5 | 2013-08-19 07:36:04 -0700 | [diff] [blame] | 72 | while (1) { |
Raymond Hettinger | a5ebbf6 | 2015-01-26 21:54:35 -0800 | [diff] [blame] | 73 | if (entry->hash == hash) { |
Raymond Hettinger | afe8909 | 2013-08-28 20:59:31 -0700 | [diff] [blame] | 74 | PyObject *startkey = entry->key; |
Raymond Hettinger | a5ebbf6 | 2015-01-26 21:54:35 -0800 | [diff] [blame] | 75 | /* startkey cannot be a dummy because the dummy hash field is -1 */ |
| 76 | assert(startkey != dummy); |
Raymond Hettinger | 08e3dc0 | 2014-12-26 20:14:00 -0800 | [diff] [blame] | 77 | if (startkey == key) |
| 78 | return entry; |
Raymond Hettinger | 93035c4 | 2015-01-25 16:12:49 -0800 | [diff] [blame] | 79 | if (PyUnicode_CheckExact(startkey) |
| 80 | && PyUnicode_CheckExact(key) |
Raymond Hettinger | ac2ef65 | 2015-07-04 16:04:44 -0700 | [diff] [blame] | 81 | && _PyUnicode_EQ(startkey, key)) |
Raymond Hettinger | 93035c4 | 2015-01-25 16:12:49 -0800 | [diff] [blame] | 82 | return entry; |
Raymond Hettinger | 70559b5 | 2015-07-23 07:42:23 -0400 | [diff] [blame] | 83 | table = so->table; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 84 | Py_INCREF(startkey); |
| 85 | cmp = PyObject_RichCompareBool(startkey, key, Py_EQ); |
| 86 | Py_DECREF(startkey); |
Raymond Hettinger | 426d995 | 2014-05-18 21:40:20 +0100 | [diff] [blame] | 87 | if (cmp < 0) /* unlikely */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 88 | return NULL; |
Raymond Hettinger | 426d995 | 2014-05-18 21:40:20 +0100 | [diff] [blame] | 89 | if (table != so->table || entry->key != startkey) /* unlikely */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 90 | return set_lookkey(so, key, hash); |
Raymond Hettinger | 426d995 | 2014-05-18 21:40:20 +0100 | [diff] [blame] | 91 | if (cmp > 0) /* likely */ |
Raymond Hettinger | afe8909 | 2013-08-28 20:59:31 -0700 | [diff] [blame] | 92 | return entry; |
Raymond Hettinger | 438f913 | 2015-02-09 06:48:29 -0600 | [diff] [blame] | 93 | mask = so->mask; /* help avoid a register spill */ |
Raymond Hettinger | afe8909 | 2013-08-28 20:59:31 -0700 | [diff] [blame] | 94 | } |
Raymond Hettinger | afe8909 | 2013-08-28 20:59:31 -0700 | [diff] [blame] | 95 | |
Raymond Hettinger | c658d85 | 2015-02-02 08:35:00 -0800 | [diff] [blame] | 96 | if (i + LINEAR_PROBES <= mask) { |
Raymond Hettinger | 8249282 | 2015-02-04 08:37:02 -0800 | [diff] [blame] | 97 | for (j = 0 ; j < LINEAR_PROBES ; j++) { |
Raymond Hettinger | c658d85 | 2015-02-02 08:35:00 -0800 | [diff] [blame] | 98 | entry++; |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 99 | if (entry->hash == 0 && entry->key == NULL) |
| 100 | return entry; |
Raymond Hettinger | c658d85 | 2015-02-02 08:35:00 -0800 | [diff] [blame] | 101 | if (entry->hash == hash) { |
| 102 | PyObject *startkey = entry->key; |
| 103 | assert(startkey != dummy); |
| 104 | if (startkey == key) |
| 105 | return entry; |
| 106 | if (PyUnicode_CheckExact(startkey) |
| 107 | && PyUnicode_CheckExact(key) |
Raymond Hettinger | ac2ef65 | 2015-07-04 16:04:44 -0700 | [diff] [blame] | 108 | && _PyUnicode_EQ(startkey, key)) |
Raymond Hettinger | c658d85 | 2015-02-02 08:35:00 -0800 | [diff] [blame] | 109 | return entry; |
Raymond Hettinger | 70559b5 | 2015-07-23 07:42:23 -0400 | [diff] [blame] | 110 | table = so->table; |
Raymond Hettinger | c658d85 | 2015-02-02 08:35:00 -0800 | [diff] [blame] | 111 | Py_INCREF(startkey); |
| 112 | cmp = PyObject_RichCompareBool(startkey, key, Py_EQ); |
| 113 | Py_DECREF(startkey); |
| 114 | if (cmp < 0) |
| 115 | return NULL; |
| 116 | if (table != so->table || entry->key != startkey) |
| 117 | return set_lookkey(so, key, hash); |
| 118 | if (cmp > 0) |
| 119 | return entry; |
Raymond Hettinger | 438f913 | 2015-02-09 06:48:29 -0600 | [diff] [blame] | 120 | mask = so->mask; |
Raymond Hettinger | c658d85 | 2015-02-02 08:35:00 -0800 | [diff] [blame] | 121 | } |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 122 | } |
| 123 | } |
| 124 | |
| 125 | perturb >>= PERTURB_SHIFT; |
| 126 | i = (i * 5 + 1 + perturb) & mask; |
| 127 | |
Raymond Hettinger | 70559b5 | 2015-07-23 07:42:23 -0400 | [diff] [blame] | 128 | entry = &so->table[i]; |
Raymond Hettinger | 7e3592d | 2015-06-21 10:47:20 -0700 | [diff] [blame] | 129 | if (entry->key == NULL) |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 130 | return entry; |
| 131 | } |
| 132 | } |
| 133 | |
Raymond Hettinger | 15f0869 | 2015-07-03 17:21:17 -0700 | [diff] [blame] | 134 | static int set_table_resize(PySetObject *, Py_ssize_t); |
| 135 | |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 136 | static int |
Raymond Hettinger | ff9e18a | 2015-07-20 07:34:05 -0400 | [diff] [blame] | 137 | set_add_entry(PySetObject *so, PyObject *key, Py_hash_t hash) |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 138 | { |
Raymond Hettinger | ff9e18a | 2015-07-20 07:34:05 -0400 | [diff] [blame] | 139 | setentry *table; |
Raymond Hettinger | 38bb95e | 2015-06-24 01:22:19 -0700 | [diff] [blame] | 140 | setentry *freeslot; |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 141 | setentry *entry; |
Raymond Hettinger | 38bb95e | 2015-06-24 01:22:19 -0700 | [diff] [blame] | 142 | size_t perturb; |
Raymond Hettinger | ff9e18a | 2015-07-20 07:34:05 -0400 | [diff] [blame] | 143 | size_t mask; |
| 144 | size_t i; /* Unsigned for defined overflow behavior */ |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 145 | size_t j; |
| 146 | int cmp; |
| 147 | |
Raymond Hettinger | ff9e18a | 2015-07-20 07:34:05 -0400 | [diff] [blame] | 148 | /* Pre-increment is necessary to prevent arbitrary code in the rich |
| 149 | comparison from deallocating the key just before the insertion. */ |
| 150 | Py_INCREF(key); |
| 151 | |
| 152 | restart: |
| 153 | |
Raymond Hettinger | ff9e18a | 2015-07-20 07:34:05 -0400 | [diff] [blame] | 154 | mask = so->mask; |
| 155 | i = (size_t)hash & mask; |
| 156 | |
Raymond Hettinger | 70559b5 | 2015-07-23 07:42:23 -0400 | [diff] [blame] | 157 | entry = &so->table[i]; |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 158 | if (entry->key == NULL) |
Raymond Hettinger | 15f0869 | 2015-07-03 17:21:17 -0700 | [diff] [blame] | 159 | goto found_unused; |
Raymond Hettinger | 6ee588f | 2015-06-20 21:39:51 -0700 | [diff] [blame] | 160 | |
| 161 | freeslot = NULL; |
| 162 | perturb = hash; |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 163 | |
| 164 | while (1) { |
| 165 | if (entry->hash == hash) { |
| 166 | PyObject *startkey = entry->key; |
| 167 | /* startkey cannot be a dummy because the dummy hash field is -1 */ |
| 168 | assert(startkey != dummy); |
| 169 | if (startkey == key) |
| 170 | goto found_active; |
| 171 | if (PyUnicode_CheckExact(startkey) |
| 172 | && PyUnicode_CheckExact(key) |
Raymond Hettinger | ac2ef65 | 2015-07-04 16:04:44 -0700 | [diff] [blame] | 173 | && _PyUnicode_EQ(startkey, key)) |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 174 | goto found_active; |
Raymond Hettinger | 70559b5 | 2015-07-23 07:42:23 -0400 | [diff] [blame] | 175 | table = so->table; |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 176 | Py_INCREF(startkey); |
| 177 | cmp = PyObject_RichCompareBool(startkey, key, Py_EQ); |
| 178 | Py_DECREF(startkey); |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 179 | if (cmp > 0) /* likely */ |
| 180 | goto found_active; |
Raymond Hettinger | daffc91 | 2015-07-31 07:58:56 -0700 | [diff] [blame] | 181 | if (cmp < 0) |
| 182 | goto comparison_error; |
| 183 | /* Continuing the search from the current entry only makes |
| 184 | sense if the table and entry are unchanged; otherwise, |
| 185 | we have to restart from the beginning */ |
| 186 | if (table != so->table || entry->key != startkey) |
| 187 | goto restart; |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 188 | mask = so->mask; /* help avoid a register spill */ |
| 189 | } |
Raymond Hettinger | 3329992 | 2018-01-14 10:20:13 -0800 | [diff] [blame] | 190 | else if (entry->hash == -1) |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 191 | freeslot = entry; |
| 192 | |
| 193 | if (i + LINEAR_PROBES <= mask) { |
| 194 | for (j = 0 ; j < LINEAR_PROBES ; j++) { |
| 195 | entry++; |
| 196 | if (entry->hash == 0 && entry->key == NULL) |
Raymond Hettinger | 15f0869 | 2015-07-03 17:21:17 -0700 | [diff] [blame] | 197 | goto found_unused_or_dummy; |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 198 | if (entry->hash == hash) { |
| 199 | PyObject *startkey = entry->key; |
| 200 | assert(startkey != dummy); |
| 201 | if (startkey == key) |
| 202 | goto found_active; |
| 203 | if (PyUnicode_CheckExact(startkey) |
| 204 | && PyUnicode_CheckExact(key) |
Raymond Hettinger | ac2ef65 | 2015-07-04 16:04:44 -0700 | [diff] [blame] | 205 | && _PyUnicode_EQ(startkey, key)) |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 206 | goto found_active; |
Raymond Hettinger | 70559b5 | 2015-07-23 07:42:23 -0400 | [diff] [blame] | 207 | table = so->table; |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 208 | Py_INCREF(startkey); |
| 209 | cmp = PyObject_RichCompareBool(startkey, key, Py_EQ); |
| 210 | Py_DECREF(startkey); |
Raymond Hettinger | daffc91 | 2015-07-31 07:58:56 -0700 | [diff] [blame] | 211 | if (cmp > 0) |
| 212 | goto found_active; |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 213 | if (cmp < 0) |
Raymond Hettinger | ff9e18a | 2015-07-20 07:34:05 -0400 | [diff] [blame] | 214 | goto comparison_error; |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 215 | if (table != so->table || entry->key != startkey) |
Raymond Hettinger | ff9e18a | 2015-07-20 07:34:05 -0400 | [diff] [blame] | 216 | goto restart; |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 217 | mask = so->mask; |
| 218 | } |
Raymond Hettinger | 3329992 | 2018-01-14 10:20:13 -0800 | [diff] [blame] | 219 | else if (entry->hash == -1) |
Raymond Hettinger | c658d85 | 2015-02-02 08:35:00 -0800 | [diff] [blame] | 220 | freeslot = entry; |
Raymond Hettinger | a35adf5 | 2013-09-02 03:23:21 -0700 | [diff] [blame] | 221 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 222 | } |
Raymond Hettinger | 3c0a4f5 | 2013-08-19 07:36:04 -0700 | [diff] [blame] | 223 | |
Raymond Hettinger | 3c0a4f5 | 2013-08-19 07:36:04 -0700 | [diff] [blame] | 224 | perturb >>= PERTURB_SHIFT; |
Raymond Hettinger | 59ecabd | 2015-01-31 02:45:12 -0800 | [diff] [blame] | 225 | i = (i * 5 + 1 + perturb) & mask; |
Raymond Hettinger | 3c0a4f5 | 2013-08-19 07:36:04 -0700 | [diff] [blame] | 226 | |
Raymond Hettinger | 70559b5 | 2015-07-23 07:42:23 -0400 | [diff] [blame] | 227 | entry = &so->table[i]; |
Raymond Hettinger | 7e3592d | 2015-06-21 10:47:20 -0700 | [diff] [blame] | 228 | if (entry->key == NULL) |
Raymond Hettinger | 15f0869 | 2015-07-03 17:21:17 -0700 | [diff] [blame] | 229 | goto found_unused_or_dummy; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 230 | } |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 231 | |
Raymond Hettinger | 15f0869 | 2015-07-03 17:21:17 -0700 | [diff] [blame] | 232 | found_unused_or_dummy: |
| 233 | if (freeslot == NULL) |
| 234 | goto found_unused; |
Raymond Hettinger | 15f0869 | 2015-07-03 17:21:17 -0700 | [diff] [blame] | 235 | so->used++; |
| 236 | freeslot->key = key; |
| 237 | freeslot->hash = hash; |
| 238 | return 0; |
| 239 | |
| 240 | found_unused: |
Raymond Hettinger | 6ee588f | 2015-06-20 21:39:51 -0700 | [diff] [blame] | 241 | so->fill++; |
| 242 | so->used++; |
| 243 | entry->key = key; |
| 244 | entry->hash = hash; |
Raymond Hettinger | 5cd87a8 | 2017-02-04 02:43:42 -0800 | [diff] [blame] | 245 | if ((size_t)so->fill*5 < mask*3) |
Raymond Hettinger | 15f0869 | 2015-07-03 17:21:17 -0700 | [diff] [blame] | 246 | return 0; |
INADA Naoki | e82cf86 | 2017-04-01 17:20:25 +0900 | [diff] [blame] | 247 | return set_table_resize(so, so->used>50000 ? so->used*2 : so->used*4); |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 248 | |
| 249 | found_active: |
Raymond Hettinger | 482c05c | 2015-07-20 01:23:32 -0400 | [diff] [blame] | 250 | Py_DECREF(key); |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 251 | return 0; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 252 | |
Raymond Hettinger | ff9e18a | 2015-07-20 07:34:05 -0400 | [diff] [blame] | 253 | comparison_error: |
Raymond Hettinger | 061091a | 2015-07-15 23:54:02 -0700 | [diff] [blame] | 254 | Py_DECREF(key); |
| 255 | return -1; |
| 256 | } |
| 257 | |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 258 | /* |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 259 | Internal routine used by set_table_resize() to insert an item which is |
| 260 | known to be absent from the set. This routine also assumes that |
| 261 | the set contains no deleted entries. Besides the performance benefit, |
Raymond Hettinger | 6019c8c | 2015-11-17 08:28:07 -0800 | [diff] [blame] | 262 | there is also safety benefit since using set_add_entry() risks making |
| 263 | a callback in the middle of a set_table_resize(), see issue 1456209. |
| 264 | The caller is responsible for updating the key's reference count and |
| 265 | the setobject's fill and used fields. |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 266 | */ |
| 267 | static void |
Raymond Hettinger | 5088f60 | 2015-12-13 18:45:01 -0800 | [diff] [blame] | 268 | set_insert_clean(setentry *table, size_t mask, PyObject *key, Py_hash_t hash) |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 269 | { |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 270 | setentry *entry; |
Raymond Hettinger | 3c0a4f5 | 2013-08-19 07:36:04 -0700 | [diff] [blame] | 271 | size_t perturb = hash; |
Raymond Hettinger | 3037e84 | 2015-01-26 21:33:48 -0800 | [diff] [blame] | 272 | size_t i = (size_t)hash & mask; |
Raymond Hettinger | a35adf5 | 2013-09-02 03:23:21 -0700 | [diff] [blame] | 273 | size_t j; |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 274 | |
Raymond Hettinger | 3c0a4f5 | 2013-08-19 07:36:04 -0700 | [diff] [blame] | 275 | while (1) { |
Raymond Hettinger | 3037e84 | 2015-01-26 21:33:48 -0800 | [diff] [blame] | 276 | entry = &table[i]; |
| 277 | if (entry->key == NULL) |
| 278 | goto found_null; |
| 279 | if (i + LINEAR_PROBES <= mask) { |
Raymond Hettinger | 8249282 | 2015-02-04 08:37:02 -0800 | [diff] [blame] | 280 | for (j = 0; j < LINEAR_PROBES; j++) { |
Raymond Hettinger | 9edd753 | 2015-01-30 20:09:23 -0800 | [diff] [blame] | 281 | entry++; |
Raymond Hettinger | 3037e84 | 2015-01-26 21:33:48 -0800 | [diff] [blame] | 282 | if (entry->key == NULL) |
| 283 | goto found_null; |
| 284 | } |
Raymond Hettinger | a35adf5 | 2013-09-02 03:23:21 -0700 | [diff] [blame] | 285 | } |
Raymond Hettinger | 3c0a4f5 | 2013-08-19 07:36:04 -0700 | [diff] [blame] | 286 | perturb >>= PERTURB_SHIFT; |
Raymond Hettinger | 3037e84 | 2015-01-26 21:33:48 -0800 | [diff] [blame] | 287 | i = (i * 5 + 1 + perturb) & mask; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 288 | } |
Raymond Hettinger | a35adf5 | 2013-09-02 03:23:21 -0700 | [diff] [blame] | 289 | found_null: |
Raymond Hettinger | 5088f60 | 2015-12-13 18:45:01 -0800 | [diff] [blame] | 290 | entry->key = key; |
Raymond Hettinger | 86d322f | 2015-12-13 19:27:17 -0800 | [diff] [blame] | 291 | entry->hash = hash; |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 292 | } |
| 293 | |
Raymond Hettinger | 04fd9dd | 2013-09-07 17:41:01 -0700 | [diff] [blame] | 294 | /* ======== End logic for probing the hash table ========================== */ |
| 295 | /* ======================================================================== */ |
| 296 | |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 297 | /* |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 298 | Restructure the table by allocating a new table and reinserting all |
Raymond Hettinger | 06d8cf8 | 2005-07-31 15:36:06 +0000 | [diff] [blame] | 299 | keys again. When entries have been deleted, the new table may |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 300 | actually be smaller than the old one. |
| 301 | */ |
| 302 | static int |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 303 | set_table_resize(PySetObject *so, Py_ssize_t minused) |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 304 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 305 | setentry *oldtable, *newtable, *entry; |
Raymond Hettinger | 5088f60 | 2015-12-13 18:45:01 -0800 | [diff] [blame] | 306 | Py_ssize_t oldmask = so->mask; |
| 307 | size_t newmask; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 308 | int is_oldtable_malloced; |
| 309 | setentry small_copy[PySet_MINSIZE]; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 310 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 311 | assert(minused >= 0); |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 312 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 313 | /* Find the smallest table size > minused. */ |
Raymond Hettinger | 426d995 | 2014-05-18 21:40:20 +0100 | [diff] [blame] | 314 | /* XXX speed-up with intrinsics */ |
Sergey Fedoseev | 6c7d67c | 2018-09-12 04:18:01 +0500 | [diff] [blame] | 315 | size_t newsize = PySet_MINSIZE; |
| 316 | while (newsize <= (size_t)minused) { |
| 317 | newsize <<= 1; // The largest possible value is PY_SSIZE_T_MAX + 1. |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 318 | } |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 319 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 320 | /* Get space for a new table. */ |
| 321 | oldtable = so->table; |
| 322 | assert(oldtable != NULL); |
| 323 | is_oldtable_malloced = oldtable != so->smalltable; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 324 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 325 | if (newsize == PySet_MINSIZE) { |
| 326 | /* A large table is shrinking, or we can't get any smaller. */ |
| 327 | newtable = so->smalltable; |
| 328 | if (newtable == oldtable) { |
| 329 | if (so->fill == so->used) { |
| 330 | /* No dummies, so no point doing anything. */ |
| 331 | return 0; |
| 332 | } |
| 333 | /* We're not going to resize it, but rebuild the |
| 334 | table anyway to purge old dummy entries. |
| 335 | Subtle: This is *necessary* if fill==size, |
| 336 | as set_lookkey needs at least one virgin slot to |
| 337 | terminate failing searches. If fill < size, it's |
| 338 | merely desirable, as dummies slow searches. */ |
| 339 | assert(so->fill > so->used); |
| 340 | memcpy(small_copy, oldtable, sizeof(small_copy)); |
| 341 | oldtable = small_copy; |
| 342 | } |
| 343 | } |
| 344 | else { |
| 345 | newtable = PyMem_NEW(setentry, newsize); |
| 346 | if (newtable == NULL) { |
| 347 | PyErr_NoMemory(); |
| 348 | return -1; |
| 349 | } |
| 350 | } |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 351 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 352 | /* Make the set empty, using the new table. */ |
| 353 | assert(newtable != oldtable); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 354 | memset(newtable, 0, sizeof(setentry) * newsize); |
Raymond Hettinger | 08e3dc0 | 2014-12-26 20:14:00 -0800 | [diff] [blame] | 355 | so->mask = newsize - 1; |
| 356 | so->table = newtable; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 357 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 358 | /* Copy the data over; this is refcount-neutral for active entries; |
| 359 | dummy entries aren't copied over, of course */ |
Raymond Hettinger | 5088f60 | 2015-12-13 18:45:01 -0800 | [diff] [blame] | 360 | newmask = (size_t)so->mask; |
Raymond Hettinger | e1af696 | 2017-02-02 08:24:48 -0800 | [diff] [blame] | 361 | if (so->fill == so->used) { |
Raymond Hettinger | 5088f60 | 2015-12-13 18:45:01 -0800 | [diff] [blame] | 362 | for (entry = oldtable; entry <= oldtable + oldmask; entry++) { |
Raymond Hettinger | 08e3dc0 | 2014-12-26 20:14:00 -0800 | [diff] [blame] | 363 | if (entry->key != NULL) { |
Raymond Hettinger | 5088f60 | 2015-12-13 18:45:01 -0800 | [diff] [blame] | 364 | set_insert_clean(newtable, newmask, entry->key, entry->hash); |
Raymond Hettinger | 08e3dc0 | 2014-12-26 20:14:00 -0800 | [diff] [blame] | 365 | } |
| 366 | } |
| 367 | } else { |
Raymond Hettinger | e1af696 | 2017-02-02 08:24:48 -0800 | [diff] [blame] | 368 | so->fill = so->used; |
Raymond Hettinger | 5088f60 | 2015-12-13 18:45:01 -0800 | [diff] [blame] | 369 | for (entry = oldtable; entry <= oldtable + oldmask; entry++) { |
Raymond Hettinger | 08e3dc0 | 2014-12-26 20:14:00 -0800 | [diff] [blame] | 370 | if (entry->key != NULL && entry->key != dummy) { |
Raymond Hettinger | 5088f60 | 2015-12-13 18:45:01 -0800 | [diff] [blame] | 371 | set_insert_clean(newtable, newmask, entry->key, entry->hash); |
Raymond Hettinger | 08e3dc0 | 2014-12-26 20:14:00 -0800 | [diff] [blame] | 372 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 373 | } |
| 374 | } |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 375 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 376 | if (is_oldtable_malloced) |
| 377 | PyMem_DEL(oldtable); |
| 378 | return 0; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 379 | } |
| 380 | |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 381 | static int |
Raymond Hettinger | b48d6a6 | 2015-07-05 16:27:44 -0700 | [diff] [blame] | 382 | set_contains_entry(PySetObject *so, PyObject *key, Py_hash_t hash) |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 383 | { |
Raymond Hettinger | b48d6a6 | 2015-07-05 16:27:44 -0700 | [diff] [blame] | 384 | setentry *entry; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 385 | |
Raymond Hettinger | b48d6a6 | 2015-07-05 16:27:44 -0700 | [diff] [blame] | 386 | entry = set_lookkey(so, key, hash); |
| 387 | if (entry != NULL) |
| 388 | return entry->key != NULL; |
| 389 | return -1; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 390 | } |
| 391 | |
| 392 | #define DISCARD_NOTFOUND 0 |
| 393 | #define DISCARD_FOUND 1 |
| 394 | |
| 395 | static int |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 396 | set_discard_entry(PySetObject *so, PyObject *key, Py_hash_t hash) |
Raymond Hettinger | 8edf27c | 2014-12-26 23:08:58 -0800 | [diff] [blame] | 397 | { |
| 398 | setentry *entry; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 399 | PyObject *old_key; |
Raymond Hettinger | c991db2 | 2005-08-11 07:58:45 +0000 | [diff] [blame] | 400 | |
Raymond Hettinger | dc28d5a | 2015-07-05 10:03:20 -0700 | [diff] [blame] | 401 | entry = set_lookkey(so, key, hash); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 402 | if (entry == NULL) |
| 403 | return -1; |
Raymond Hettinger | 8651a50 | 2015-05-27 10:37:20 -0700 | [diff] [blame] | 404 | if (entry->key == NULL) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 405 | return DISCARD_NOTFOUND; |
| 406 | old_key = entry->key; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 407 | entry->key = dummy; |
Raymond Hettinger | b335dfe | 2015-01-25 16:38:52 -0800 | [diff] [blame] | 408 | entry->hash = -1; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 409 | so->used--; |
| 410 | Py_DECREF(old_key); |
| 411 | return DISCARD_FOUND; |
Raymond Hettinger | c991db2 | 2005-08-11 07:58:45 +0000 | [diff] [blame] | 412 | } |
| 413 | |
| 414 | static int |
Raymond Hettinger | b48d6a6 | 2015-07-05 16:27:44 -0700 | [diff] [blame] | 415 | set_add_key(PySetObject *so, PyObject *key) |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 416 | { |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 417 | Py_hash_t hash; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 418 | |
Raymond Hettinger | b48d6a6 | 2015-07-05 16:27:44 -0700 | [diff] [blame] | 419 | if (!PyUnicode_CheckExact(key) || |
| 420 | (hash = ((PyASCIIObject *) key)->hash) == -1) { |
| 421 | hash = PyObject_Hash(key); |
| 422 | if (hash == -1) |
| 423 | return -1; |
| 424 | } |
| 425 | return set_add_entry(so, key, hash); |
| 426 | } |
| 427 | |
| 428 | static int |
| 429 | set_contains_key(PySetObject *so, PyObject *key) |
| 430 | { |
| 431 | Py_hash_t hash; |
| 432 | |
| 433 | if (!PyUnicode_CheckExact(key) || |
| 434 | (hash = ((PyASCIIObject *) key)->hash) == -1) { |
| 435 | hash = PyObject_Hash(key); |
| 436 | if (hash == -1) |
| 437 | return -1; |
| 438 | } |
| 439 | return set_contains_entry(so, key, hash); |
| 440 | } |
| 441 | |
| 442 | static int |
| 443 | set_discard_key(PySetObject *so, PyObject *key) |
| 444 | { |
| 445 | Py_hash_t hash; |
Christian Heimes | 0ded5b5 | 2007-12-10 15:50:56 +0000 | [diff] [blame] | 446 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 447 | if (!PyUnicode_CheckExact(key) || |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 448 | (hash = ((PyASCIIObject *) key)->hash) == -1) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 449 | hash = PyObject_Hash(key); |
| 450 | if (hash == -1) |
| 451 | return -1; |
| 452 | } |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 453 | return set_discard_entry(so, key, hash); |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 454 | } |
| 455 | |
Raymond Hettinger | 4ea9080 | 2013-09-07 21:01:29 -0700 | [diff] [blame] | 456 | static void |
| 457 | set_empty_to_minsize(PySetObject *so) |
| 458 | { |
| 459 | memset(so->smalltable, 0, sizeof(so->smalltable)); |
| 460 | so->fill = 0; |
| 461 | so->used = 0; |
| 462 | so->mask = PySet_MINSIZE - 1; |
| 463 | so->table = so->smalltable; |
| 464 | so->hash = -1; |
| 465 | } |
| 466 | |
Raymond Hettinger | fe889f3 | 2005-08-06 05:43:39 +0000 | [diff] [blame] | 467 | static int |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 468 | set_clear_internal(PySetObject *so) |
| 469 | { |
Raymond Hettinger | 08e3dc0 | 2014-12-26 20:14:00 -0800 | [diff] [blame] | 470 | setentry *entry; |
| 471 | setentry *table = so->table; |
| 472 | Py_ssize_t fill = so->fill; |
| 473 | Py_ssize_t used = so->used; |
| 474 | int table_is_malloced = table != so->smalltable; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 475 | setentry small_copy[PySet_MINSIZE]; |
Raymond Hettinger | a580c47 | 2005-08-05 17:19:54 +0000 | [diff] [blame] | 476 | |
Raymond Hettinger | 583cd03 | 2013-09-07 22:06:35 -0700 | [diff] [blame] | 477 | assert (PyAnySet_Check(so)); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 478 | assert(table != NULL); |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 479 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 480 | /* This is delicate. During the process of clearing the set, |
| 481 | * decrefs can cause the set to mutate. To avoid fatal confusion |
| 482 | * (voice of experience), we have to make the set empty before |
| 483 | * clearing the slots, and never refer to anything via so->ref while |
| 484 | * clearing. |
| 485 | */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 486 | if (table_is_malloced) |
Raymond Hettinger | 4ea9080 | 2013-09-07 21:01:29 -0700 | [diff] [blame] | 487 | set_empty_to_minsize(so); |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 488 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 489 | else if (fill > 0) { |
| 490 | /* It's a small table with something that needs to be cleared. |
| 491 | * Afraid the only safe way is to copy the set entries into |
| 492 | * another small table first. |
| 493 | */ |
| 494 | memcpy(small_copy, table, sizeof(small_copy)); |
| 495 | table = small_copy; |
Raymond Hettinger | 4ea9080 | 2013-09-07 21:01:29 -0700 | [diff] [blame] | 496 | set_empty_to_minsize(so); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 497 | } |
| 498 | /* else it's a small table that's already empty */ |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 499 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 500 | /* Now we can finally clear things. If C had refcounts, we could |
| 501 | * assert that the refcount on table is 1 now, i.e. that this function |
| 502 | * has unique access to it, so decref side-effects can't alter it. |
| 503 | */ |
Raymond Hettinger | 08e3dc0 | 2014-12-26 20:14:00 -0800 | [diff] [blame] | 504 | for (entry = table; used > 0; entry++) { |
| 505 | if (entry->key && entry->key != dummy) { |
| 506 | used--; |
| 507 | Py_DECREF(entry->key); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 508 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 509 | } |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 510 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 511 | if (table_is_malloced) |
| 512 | PyMem_DEL(table); |
| 513 | return 0; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 514 | } |
| 515 | |
| 516 | /* |
| 517 | * Iterate over a set table. Use like so: |
| 518 | * |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 519 | * Py_ssize_t pos; |
Raymond Hettinger | c991db2 | 2005-08-11 07:58:45 +0000 | [diff] [blame] | 520 | * setentry *entry; |
Raymond Hettinger | d794666 | 2005-08-01 21:39:29 +0000 | [diff] [blame] | 521 | * pos = 0; # important! pos should not otherwise be changed by you |
Raymond Hettinger | c991db2 | 2005-08-11 07:58:45 +0000 | [diff] [blame] | 522 | * while (set_next(yourset, &pos, &entry)) { |
| 523 | * Refer to borrowed reference in entry->key. |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 524 | * } |
| 525 | * |
Raymond Hettinger | c991db2 | 2005-08-11 07:58:45 +0000 | [diff] [blame] | 526 | * CAUTION: In general, it isn't safe to use set_next in a loop that |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 527 | * mutates the table. |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 528 | */ |
| 529 | static int |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 530 | set_next(PySetObject *so, Py_ssize_t *pos_ptr, setentry **entry_ptr) |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 531 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 532 | Py_ssize_t i; |
| 533 | Py_ssize_t mask; |
Raymond Hettinger | ef6bd7d | 2015-07-06 08:43:37 -0700 | [diff] [blame] | 534 | setentry *entry; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 535 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 536 | assert (PyAnySet_Check(so)); |
| 537 | i = *pos_ptr; |
| 538 | assert(i >= 0); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 539 | mask = so->mask; |
Raymond Hettinger | ef6bd7d | 2015-07-06 08:43:37 -0700 | [diff] [blame] | 540 | entry = &so->table[i]; |
| 541 | while (i <= mask && (entry->key == NULL || entry->key == dummy)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 542 | i++; |
Raymond Hettinger | ef6bd7d | 2015-07-06 08:43:37 -0700 | [diff] [blame] | 543 | entry++; |
| 544 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 545 | *pos_ptr = i+1; |
| 546 | if (i > mask) |
| 547 | return 0; |
Raymond Hettinger | ef6bd7d | 2015-07-06 08:43:37 -0700 | [diff] [blame] | 548 | assert(entry != NULL); |
| 549 | *entry_ptr = entry; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 550 | return 1; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 551 | } |
| 552 | |
Raymond Hettinger | f408ddf | 2005-08-17 00:27:42 +0000 | [diff] [blame] | 553 | static void |
| 554 | set_dealloc(PySetObject *so) |
| 555 | { |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 556 | setentry *entry; |
Raymond Hettinger | 08e3dc0 | 2014-12-26 20:14:00 -0800 | [diff] [blame] | 557 | Py_ssize_t used = so->used; |
| 558 | |
INADA Naoki | a6296d3 | 2017-08-24 14:55:17 +0900 | [diff] [blame] | 559 | /* bpo-31095: UnTrack is needed before calling any callbacks */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 560 | PyObject_GC_UnTrack(so); |
| 561 | Py_TRASHCAN_SAFE_BEGIN(so) |
| 562 | if (so->weakreflist != NULL) |
| 563 | PyObject_ClearWeakRefs((PyObject *) so); |
Raymond Hettinger | f408ddf | 2005-08-17 00:27:42 +0000 | [diff] [blame] | 564 | |
Raymond Hettinger | 08e3dc0 | 2014-12-26 20:14:00 -0800 | [diff] [blame] | 565 | for (entry = so->table; used > 0; entry++) { |
| 566 | if (entry->key && entry->key != dummy) { |
| 567 | used--; |
Raymond Hettinger | fcf3b50 | 2013-08-22 08:20:31 -0700 | [diff] [blame] | 568 | Py_DECREF(entry->key); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 569 | } |
| 570 | } |
| 571 | if (so->table != so->smalltable) |
| 572 | PyMem_DEL(so->table); |
Raymond Hettinger | 8f8839e | 2013-09-07 20:26:50 -0700 | [diff] [blame] | 573 | Py_TYPE(so)->tp_free(so); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 574 | Py_TRASHCAN_SAFE_END(so) |
Raymond Hettinger | f408ddf | 2005-08-17 00:27:42 +0000 | [diff] [blame] | 575 | } |
| 576 | |
Raymond Hettinger | f408ddf | 2005-08-17 00:27:42 +0000 | [diff] [blame] | 577 | static PyObject * |
| 578 | set_repr(PySetObject *so) |
| 579 | { |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 580 | PyObject *result=NULL, *keys, *listrepr, *tmp; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 581 | int status = Py_ReprEnter((PyObject*)so); |
Thomas Wouters | 902d6eb | 2007-01-09 23:18:33 +0000 | [diff] [blame] | 582 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 583 | if (status != 0) { |
| 584 | if (status < 0) |
| 585 | return NULL; |
| 586 | return PyUnicode_FromFormat("%s(...)", Py_TYPE(so)->tp_name); |
| 587 | } |
Raymond Hettinger | f408ddf | 2005-08-17 00:27:42 +0000 | [diff] [blame] | 588 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 589 | /* shortcut for the empty set */ |
| 590 | if (!so->used) { |
| 591 | Py_ReprLeave((PyObject*)so); |
| 592 | return PyUnicode_FromFormat("%s()", Py_TYPE(so)->tp_name); |
| 593 | } |
Georg Brandl | c4996ba | 2006-08-28 19:37:11 +0000 | [diff] [blame] | 594 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 595 | keys = PySequence_List((PyObject *)so); |
| 596 | if (keys == NULL) |
| 597 | goto done; |
Raymond Hettinger | f408ddf | 2005-08-17 00:27:42 +0000 | [diff] [blame] | 598 | |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 599 | /* repr(keys)[1:-1] */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 600 | listrepr = PyObject_Repr(keys); |
| 601 | Py_DECREF(keys); |
| 602 | if (listrepr == NULL) |
| 603 | goto done; |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 604 | tmp = PyUnicode_Substring(listrepr, 1, PyUnicode_GET_LENGTH(listrepr)-1); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 605 | Py_DECREF(listrepr); |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 606 | if (tmp == NULL) |
| 607 | goto done; |
| 608 | listrepr = tmp; |
Victor Stinner | a1a807b | 2011-05-26 14:24:30 +0200 | [diff] [blame] | 609 | |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 610 | if (Py_TYPE(so) != &PySet_Type) |
| 611 | result = PyUnicode_FromFormat("%s({%U})", |
| 612 | Py_TYPE(so)->tp_name, |
| 613 | listrepr); |
| 614 | else |
| 615 | result = PyUnicode_FromFormat("{%U}", listrepr); |
| 616 | Py_DECREF(listrepr); |
Thomas Wouters | 902d6eb | 2007-01-09 23:18:33 +0000 | [diff] [blame] | 617 | done: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 618 | Py_ReprLeave((PyObject*)so); |
| 619 | return result; |
Raymond Hettinger | f408ddf | 2005-08-17 00:27:42 +0000 | [diff] [blame] | 620 | } |
| 621 | |
Martin v. Löwis | 18e1655 | 2006-02-15 17:27:45 +0000 | [diff] [blame] | 622 | static Py_ssize_t |
Raymond Hettinger | f408ddf | 2005-08-17 00:27:42 +0000 | [diff] [blame] | 623 | set_len(PyObject *so) |
| 624 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 625 | return ((PySetObject *)so)->used; |
Raymond Hettinger | f408ddf | 2005-08-17 00:27:42 +0000 | [diff] [blame] | 626 | } |
| 627 | |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 628 | static int |
Raymond Hettinger | c991db2 | 2005-08-11 07:58:45 +0000 | [diff] [blame] | 629 | set_merge(PySetObject *so, PyObject *otherset) |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 630 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 631 | PySetObject *other; |
Raymond Hettinger | faf7b7f | 2010-09-03 10:00:50 +0000 | [diff] [blame] | 632 | PyObject *key; |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 633 | Py_ssize_t i; |
Raymond Hettinger | 1bd8d75 | 2015-05-13 01:26:14 -0700 | [diff] [blame] | 634 | setentry *so_entry; |
| 635 | setentry *other_entry; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 636 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 637 | assert (PyAnySet_Check(so)); |
| 638 | assert (PyAnySet_Check(otherset)); |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 639 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 640 | other = (PySetObject*)otherset; |
| 641 | if (other == so || other->used == 0) |
Raymond Hettinger | 1bd8d75 | 2015-05-13 01:26:14 -0700 | [diff] [blame] | 642 | /* a.update(a) or a.update(set()); nothing to do */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 643 | return 0; |
| 644 | /* Do one big resize at the start, rather than |
| 645 | * incrementally resizing as we insert new keys. Expect |
| 646 | * that there will be no (or few) overlapping keys. |
| 647 | */ |
Raymond Hettinger | 5cd87a8 | 2017-02-04 02:43:42 -0800 | [diff] [blame] | 648 | if ((so->fill + other->used)*5 >= so->mask*3) { |
INADA Naoki | e82cf86 | 2017-04-01 17:20:25 +0900 | [diff] [blame] | 649 | if (set_table_resize(so, (so->used + other->used)*2) != 0) |
| 650 | return -1; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 651 | } |
Raymond Hettinger | 1bd8d75 | 2015-05-13 01:26:14 -0700 | [diff] [blame] | 652 | so_entry = so->table; |
| 653 | other_entry = other->table; |
| 654 | |
| 655 | /* If our table is empty, and both tables have the same size, and |
| 656 | there are no dummies to eliminate, then just copy the pointers. */ |
| 657 | if (so->fill == 0 && so->mask == other->mask && other->fill == other->used) { |
| 658 | for (i = 0; i <= other->mask; i++, so_entry++, other_entry++) { |
| 659 | key = other_entry->key; |
| 660 | if (key != NULL) { |
| 661 | assert(so_entry->key == NULL); |
| 662 | Py_INCREF(key); |
| 663 | so_entry->key = key; |
| 664 | so_entry->hash = other_entry->hash; |
| 665 | } |
| 666 | } |
| 667 | so->fill = other->fill; |
| 668 | so->used = other->used; |
| 669 | return 0; |
| 670 | } |
| 671 | |
| 672 | /* If our table is empty, we can use set_insert_clean() */ |
| 673 | if (so->fill == 0) { |
Raymond Hettinger | 5088f60 | 2015-12-13 18:45:01 -0800 | [diff] [blame] | 674 | setentry *newtable = so->table; |
| 675 | size_t newmask = (size_t)so->mask; |
Raymond Hettinger | 6019c8c | 2015-11-17 08:28:07 -0800 | [diff] [blame] | 676 | so->fill = other->used; |
| 677 | so->used = other->used; |
Raymond Hettinger | e449587 | 2015-12-15 00:42:30 -0800 | [diff] [blame] | 678 | for (i = other->mask + 1; i > 0 ; i--, other_entry++) { |
Raymond Hettinger | 1bd8d75 | 2015-05-13 01:26:14 -0700 | [diff] [blame] | 679 | key = other_entry->key; |
| 680 | if (key != NULL && key != dummy) { |
| 681 | Py_INCREF(key); |
Raymond Hettinger | 5088f60 | 2015-12-13 18:45:01 -0800 | [diff] [blame] | 682 | set_insert_clean(newtable, newmask, key, other_entry->hash); |
Raymond Hettinger | 1bd8d75 | 2015-05-13 01:26:14 -0700 | [diff] [blame] | 683 | } |
| 684 | } |
| 685 | return 0; |
| 686 | } |
| 687 | |
| 688 | /* We can't assure there are no duplicates, so do normal insertions */ |
Raymond Hettinger | a3626bc | 2015-07-15 23:50:14 -0700 | [diff] [blame] | 689 | for (i = 0; i <= other->mask; i++) { |
| 690 | other_entry = &other->table[i]; |
Raymond Hettinger | 1bd8d75 | 2015-05-13 01:26:14 -0700 | [diff] [blame] | 691 | key = other_entry->key; |
| 692 | if (key != NULL && key != dummy) { |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 693 | if (set_add_entry(so, key, other_entry->hash)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 694 | return -1; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 695 | } |
| 696 | } |
| 697 | return 0; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 698 | } |
| 699 | |
Raymond Hettinger | ce8185e | 2005-08-13 09:28:48 +0000 | [diff] [blame] | 700 | static PyObject * |
Siddhesh Poyarekar | 55edd0c | 2018-04-30 00:29:33 +0530 | [diff] [blame] | 701 | set_pop(PySetObject *so, PyObject *Py_UNUSED(ignored)) |
Raymond Hettinger | ce8185e | 2005-08-13 09:28:48 +0000 | [diff] [blame] | 702 | { |
Raymond Hettinger | 9cd6a78 | 2015-01-18 16:06:18 -0800 | [diff] [blame] | 703 | /* Make sure the search finger is in bounds */ |
Raymond Hettinger | f9ec1b9 | 2018-11-11 14:35:47 -0800 | [diff] [blame] | 704 | setentry *entry = so->table + (so->finger & so->mask); |
| 705 | setentry *limit = so->table + so->mask; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 706 | PyObject *key; |
Raymond Hettinger | ce8185e | 2005-08-13 09:28:48 +0000 | [diff] [blame] | 707 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 708 | if (so->used == 0) { |
| 709 | PyErr_SetString(PyExc_KeyError, "pop from an empty set"); |
| 710 | return NULL; |
| 711 | } |
Raymond Hettinger | cf5863f | 2018-11-09 02:31:56 -0800 | [diff] [blame] | 712 | while (entry->key == NULL || entry->key==dummy) { |
| 713 | entry++; |
| 714 | if (entry > limit) |
| 715 | entry = so->table; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 716 | } |
| 717 | key = entry->key; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 718 | entry->key = dummy; |
Raymond Hettinger | b335dfe | 2015-01-25 16:38:52 -0800 | [diff] [blame] | 719 | entry->hash = -1; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 720 | so->used--; |
Raymond Hettinger | cf5863f | 2018-11-09 02:31:56 -0800 | [diff] [blame] | 721 | so->finger = entry - so->table + 1; /* next place to start */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 722 | return key; |
Raymond Hettinger | ce8185e | 2005-08-13 09:28:48 +0000 | [diff] [blame] | 723 | } |
| 724 | |
Benjamin Peterson | f10a79a | 2008-10-11 00:49:57 +0000 | [diff] [blame] | 725 | PyDoc_STRVAR(pop_doc, "Remove and return an arbitrary set element.\n\ |
| 726 | Raises KeyError if the set is empty."); |
Raymond Hettinger | ce8185e | 2005-08-13 09:28:48 +0000 | [diff] [blame] | 727 | |
| 728 | static int |
Raymond Hettinger | f408ddf | 2005-08-17 00:27:42 +0000 | [diff] [blame] | 729 | set_traverse(PySetObject *so, visitproc visit, void *arg) |
Raymond Hettinger | ce8185e | 2005-08-13 09:28:48 +0000 | [diff] [blame] | 730 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 731 | Py_ssize_t pos = 0; |
| 732 | setentry *entry; |
Raymond Hettinger | f408ddf | 2005-08-17 00:27:42 +0000 | [diff] [blame] | 733 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 734 | while (set_next(so, &pos, &entry)) |
| 735 | Py_VISIT(entry->key); |
| 736 | return 0; |
Raymond Hettinger | f408ddf | 2005-08-17 00:27:42 +0000 | [diff] [blame] | 737 | } |
| 738 | |
Raymond Hettinger | fbffdef | 2015-08-01 09:53:00 -0700 | [diff] [blame] | 739 | /* Work to increase the bit dispersion for closely spaced hash values. |
| 740 | This is important because some use cases have many combinations of a |
| 741 | small number of elements with nearby hashes so that many distinct |
| 742 | combinations collapse to only a handful of distinct hash values. */ |
| 743 | |
| 744 | static Py_uhash_t |
| 745 | _shuffle_bits(Py_uhash_t h) |
| 746 | { |
| 747 | return ((h ^ 89869747UL) ^ (h << 16)) * 3644798167UL; |
| 748 | } |
| 749 | |
| 750 | /* Most of the constants in this hash algorithm are randomly chosen |
| 751 | large primes with "interesting bit patterns" and that passed tests |
| 752 | for good collision statistics on a variety of problematic datasets |
| 753 | including powersets and graph structures (such as David Eppstein's |
| 754 | graph recipes in Lib/test/test_set.py) */ |
| 755 | |
Benjamin Peterson | 8f67d08 | 2010-10-17 20:54:53 +0000 | [diff] [blame] | 756 | static Py_hash_t |
Raymond Hettinger | f408ddf | 2005-08-17 00:27:42 +0000 | [diff] [blame] | 757 | frozenset_hash(PyObject *self) |
| 758 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 759 | PySetObject *so = (PySetObject *)self; |
Raymond Hettinger | 4148195 | 2015-08-07 00:43:39 -0700 | [diff] [blame] | 760 | Py_uhash_t hash = 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 761 | setentry *entry; |
Raymond Hettinger | f408ddf | 2005-08-17 00:27:42 +0000 | [diff] [blame] | 762 | |
Raymond Hettinger | b501a27 | 2015-08-06 22:15:22 -0700 | [diff] [blame] | 763 | if (so->hash != -1) |
| 764 | return so->hash; |
| 765 | |
Raymond Hettinger | fbffdef | 2015-08-01 09:53:00 -0700 | [diff] [blame] | 766 | /* Xor-in shuffled bits from every entry's hash field because xor is |
| 767 | commutative and a frozenset hash should be independent of order. |
| 768 | |
| 769 | For speed, include null entries and dummy entries and then |
| 770 | subtract out their effect afterwards so that the final hash |
| 771 | depends only on active entries. This allows the code to be |
| 772 | vectorized by the compiler and it saves the unpredictable |
| 773 | branches that would arise when trying to exclude null and dummy |
| 774 | entries on every iteration. */ |
| 775 | |
| 776 | for (entry = so->table; entry <= &so->table[so->mask]; entry++) |
| 777 | hash ^= _shuffle_bits(entry->hash); |
| 778 | |
Raymond Hettinger | a286a51 | 2015-08-01 11:07:11 -0700 | [diff] [blame] | 779 | /* Remove the effect of an odd number of NULL entries */ |
Raymond Hettinger | fbffdef | 2015-08-01 09:53:00 -0700 | [diff] [blame] | 780 | if ((so->mask + 1 - so->fill) & 1) |
| 781 | hash ^= _shuffle_bits(0); |
| 782 | |
| 783 | /* Remove the effect of an odd number of dummy entries */ |
| 784 | if ((so->fill - so->used) & 1) |
| 785 | hash ^= _shuffle_bits(-1); |
| 786 | |
Raymond Hettinger | 4148195 | 2015-08-07 00:43:39 -0700 | [diff] [blame] | 787 | /* Factor in the number of active entries */ |
| 788 | hash ^= ((Py_uhash_t)PySet_GET_SIZE(self) + 1) * 1927868237UL; |
| 789 | |
Raymond Hettinger | fbffdef | 2015-08-01 09:53:00 -0700 | [diff] [blame] | 790 | /* Disperse patterns arising in nested frozensets */ |
Raymond Hettinger | fa78806 | 2018-01-18 13:23:27 -0800 | [diff] [blame] | 791 | hash ^= (hash >> 11) ^ (hash >> 25); |
Gregory P. Smith | c2176e4 | 2012-12-10 18:32:53 -0800 | [diff] [blame] | 792 | hash = hash * 69069U + 907133923UL; |
Raymond Hettinger | fbffdef | 2015-08-01 09:53:00 -0700 | [diff] [blame] | 793 | |
Raymond Hettinger | 36c0500 | 2015-08-01 10:57:42 -0700 | [diff] [blame] | 794 | /* -1 is reserved as an error code */ |
Victor Stinner | 12174a5 | 2014-08-15 23:17:38 +0200 | [diff] [blame] | 795 | if (hash == (Py_uhash_t)-1) |
Gregory P. Smith | 27cbcd6 | 2012-12-10 18:15:46 -0800 | [diff] [blame] | 796 | hash = 590923713UL; |
Raymond Hettinger | 36c0500 | 2015-08-01 10:57:42 -0700 | [diff] [blame] | 797 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 798 | so->hash = hash; |
| 799 | return hash; |
Raymond Hettinger | f408ddf | 2005-08-17 00:27:42 +0000 | [diff] [blame] | 800 | } |
| 801 | |
Raymond Hettinger | a9d9936 | 2005-08-05 00:01:15 +0000 | [diff] [blame] | 802 | /***** Set iterator type ***********************************************/ |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 803 | |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 804 | typedef struct { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 805 | PyObject_HEAD |
| 806 | PySetObject *si_set; /* Set to NULL when iterator is exhausted */ |
| 807 | Py_ssize_t si_used; |
Raymond Hettinger | 9632a7d | 2015-07-07 15:29:24 -0700 | [diff] [blame] | 808 | Py_ssize_t si_pos; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 809 | Py_ssize_t len; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 810 | } setiterobject; |
| 811 | |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 812 | static void |
| 813 | setiter_dealloc(setiterobject *si) |
| 814 | { |
INADA Naoki | a6296d3 | 2017-08-24 14:55:17 +0900 | [diff] [blame] | 815 | /* bpo-31095: UnTrack is needed before calling any callbacks */ |
| 816 | _PyObject_GC_UNTRACK(si); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 817 | Py_XDECREF(si->si_set); |
| 818 | PyObject_GC_Del(si); |
Antoine Pitrou | 7ddda78 | 2009-01-01 15:35:33 +0000 | [diff] [blame] | 819 | } |
| 820 | |
| 821 | static int |
| 822 | setiter_traverse(setiterobject *si, visitproc visit, void *arg) |
| 823 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 824 | Py_VISIT(si->si_set); |
| 825 | return 0; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 826 | } |
| 827 | |
Raymond Hettinger | 6b27cda | 2005-09-24 21:23:05 +0000 | [diff] [blame] | 828 | static PyObject * |
Siddhesh Poyarekar | 55edd0c | 2018-04-30 00:29:33 +0530 | [diff] [blame] | 829 | setiter_len(setiterobject *si, PyObject *Py_UNUSED(ignored)) |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 830 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 831 | Py_ssize_t len = 0; |
| 832 | if (si->si_set != NULL && si->si_used == si->si_set->used) |
| 833 | len = si->len; |
Antoine Pitrou | 671b4d9 | 2010-08-17 17:55:07 +0000 | [diff] [blame] | 834 | return PyLong_FromSsize_t(len); |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 835 | } |
| 836 | |
Armin Rigo | f5b3e36 | 2006-02-11 21:32:43 +0000 | [diff] [blame] | 837 | PyDoc_STRVAR(length_hint_doc, "Private method returning an estimate of len(list(it))."); |
Raymond Hettinger | 6b27cda | 2005-09-24 21:23:05 +0000 | [diff] [blame] | 838 | |
Kristján Valur Jónsson | 31668b8 | 2012-04-03 10:49:41 +0000 | [diff] [blame] | 839 | static PyObject *setiter_iternext(setiterobject *si); |
| 840 | |
| 841 | static PyObject * |
Siddhesh Poyarekar | 55edd0c | 2018-04-30 00:29:33 +0530 | [diff] [blame] | 842 | setiter_reduce(setiterobject *si, PyObject *Py_UNUSED(ignored)) |
Kristján Valur Jónsson | 31668b8 | 2012-04-03 10:49:41 +0000 | [diff] [blame] | 843 | { |
Ezio Melotti | 0e1af28 | 2012-09-28 16:43:40 +0300 | [diff] [blame] | 844 | /* copy the iterator state */ |
Sergey Fedoseev | 6395844 | 2018-10-20 05:43:33 +0500 | [diff] [blame] | 845 | setiterobject tmp = *si; |
Kristján Valur Jónsson | 31668b8 | 2012-04-03 10:49:41 +0000 | [diff] [blame] | 846 | Py_XINCREF(tmp.si_set); |
Ezio Melotti | 0e1af28 | 2012-09-28 16:43:40 +0300 | [diff] [blame] | 847 | |
Kristján Valur Jónsson | 31668b8 | 2012-04-03 10:49:41 +0000 | [diff] [blame] | 848 | /* iterate the temporary into a list */ |
Sergey Fedoseev | 6395844 | 2018-10-20 05:43:33 +0500 | [diff] [blame] | 849 | PyObject *list = PySequence_List((PyObject*)&tmp); |
Kristján Valur Jónsson | 31668b8 | 2012-04-03 10:49:41 +0000 | [diff] [blame] | 850 | Py_XDECREF(tmp.si_set); |
Sergey Fedoseev | 6395844 | 2018-10-20 05:43:33 +0500 | [diff] [blame] | 851 | if (list == NULL) { |
Kristján Valur Jónsson | 31668b8 | 2012-04-03 10:49:41 +0000 | [diff] [blame] | 852 | return NULL; |
| 853 | } |
Antoine Pitrou | a701388 | 2012-04-05 00:04:20 +0200 | [diff] [blame] | 854 | return Py_BuildValue("N(N)", _PyObject_GetBuiltin("iter"), list); |
Kristján Valur Jónsson | 31668b8 | 2012-04-03 10:49:41 +0000 | [diff] [blame] | 855 | } |
| 856 | |
| 857 | PyDoc_STRVAR(reduce_doc, "Return state information for pickling."); |
| 858 | |
Raymond Hettinger | 6b27cda | 2005-09-24 21:23:05 +0000 | [diff] [blame] | 859 | static PyMethodDef setiter_methods[] = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 860 | {"__length_hint__", (PyCFunction)setiter_len, METH_NOARGS, length_hint_doc}, |
Kristján Valur Jónsson | 31668b8 | 2012-04-03 10:49:41 +0000 | [diff] [blame] | 861 | {"__reduce__", (PyCFunction)setiter_reduce, METH_NOARGS, reduce_doc}, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 862 | {NULL, NULL} /* sentinel */ |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 863 | }; |
| 864 | |
Raymond Hettinger | 06d8cf8 | 2005-07-31 15:36:06 +0000 | [diff] [blame] | 865 | static PyObject *setiter_iternext(setiterobject *si) |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 866 | { |
Raymond Hettinger | 9632a7d | 2015-07-07 15:29:24 -0700 | [diff] [blame] | 867 | PyObject *key; |
| 868 | Py_ssize_t i, mask; |
Antoine Pitrou | 9ed5f27 | 2013-08-13 20:18:52 +0200 | [diff] [blame] | 869 | setentry *entry; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 870 | PySetObject *so = si->si_set; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 871 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 872 | if (so == NULL) |
| 873 | return NULL; |
| 874 | assert (PyAnySet_Check(so)); |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 875 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 876 | if (si->si_used != so->used) { |
| 877 | PyErr_SetString(PyExc_RuntimeError, |
| 878 | "Set changed size during iteration"); |
| 879 | si->si_used = -1; /* Make this state sticky */ |
| 880 | return NULL; |
| 881 | } |
Raymond Hettinger | 9632a7d | 2015-07-07 15:29:24 -0700 | [diff] [blame] | 882 | |
| 883 | i = si->si_pos; |
| 884 | assert(i>=0); |
| 885 | entry = so->table; |
| 886 | mask = so->mask; |
| 887 | while (i <= mask && (entry[i].key == NULL || entry[i].key == dummy)) |
| 888 | i++; |
| 889 | si->si_pos = i+1; |
| 890 | if (i > mask) |
| 891 | goto fail; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 892 | si->len--; |
Raymond Hettinger | 9632a7d | 2015-07-07 15:29:24 -0700 | [diff] [blame] | 893 | key = entry[i].key; |
| 894 | Py_INCREF(key); |
| 895 | return key; |
| 896 | |
| 897 | fail: |
Raymond Hettinger | 9632a7d | 2015-07-07 15:29:24 -0700 | [diff] [blame] | 898 | si->si_set = NULL; |
Serhiy Storchaka | fbb1c5e | 2016-03-30 20:40:02 +0300 | [diff] [blame] | 899 | Py_DECREF(so); |
Raymond Hettinger | 9632a7d | 2015-07-07 15:29:24 -0700 | [diff] [blame] | 900 | return NULL; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 901 | } |
| 902 | |
Christian Heimes | a22e8bd | 2007-11-29 22:35:39 +0000 | [diff] [blame] | 903 | PyTypeObject PySetIter_Type = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 904 | PyVarObject_HEAD_INIT(&PyType_Type, 0) |
| 905 | "set_iterator", /* tp_name */ |
| 906 | sizeof(setiterobject), /* tp_basicsize */ |
| 907 | 0, /* tp_itemsize */ |
| 908 | /* methods */ |
| 909 | (destructor)setiter_dealloc, /* tp_dealloc */ |
| 910 | 0, /* tp_print */ |
| 911 | 0, /* tp_getattr */ |
| 912 | 0, /* tp_setattr */ |
| 913 | 0, /* tp_reserved */ |
| 914 | 0, /* tp_repr */ |
| 915 | 0, /* tp_as_number */ |
| 916 | 0, /* tp_as_sequence */ |
| 917 | 0, /* tp_as_mapping */ |
| 918 | 0, /* tp_hash */ |
| 919 | 0, /* tp_call */ |
| 920 | 0, /* tp_str */ |
| 921 | PyObject_GenericGetAttr, /* tp_getattro */ |
| 922 | 0, /* tp_setattro */ |
| 923 | 0, /* tp_as_buffer */ |
Raymond Hettinger | 5d2385f | 2015-07-08 11:52:27 -0700 | [diff] [blame] | 924 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 925 | 0, /* tp_doc */ |
| 926 | (traverseproc)setiter_traverse, /* tp_traverse */ |
| 927 | 0, /* tp_clear */ |
| 928 | 0, /* tp_richcompare */ |
| 929 | 0, /* tp_weaklistoffset */ |
| 930 | PyObject_SelfIter, /* tp_iter */ |
| 931 | (iternextfunc)setiter_iternext, /* tp_iternext */ |
| 932 | setiter_methods, /* tp_methods */ |
| 933 | 0, |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 934 | }; |
| 935 | |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 936 | static PyObject * |
| 937 | set_iter(PySetObject *so) |
| 938 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 939 | setiterobject *si = PyObject_GC_New(setiterobject, &PySetIter_Type); |
| 940 | if (si == NULL) |
| 941 | return NULL; |
| 942 | Py_INCREF(so); |
| 943 | si->si_set = so; |
| 944 | si->si_used = so->used; |
Raymond Hettinger | 9632a7d | 2015-07-07 15:29:24 -0700 | [diff] [blame] | 945 | si->si_pos = 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 946 | si->len = so->used; |
| 947 | _PyObject_GC_TRACK(si); |
| 948 | return (PyObject *)si; |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 949 | } |
| 950 | |
Raymond Hettinger | d794666 | 2005-08-01 21:39:29 +0000 | [diff] [blame] | 951 | static int |
Raymond Hettinger | d794666 | 2005-08-01 21:39:29 +0000 | [diff] [blame] | 952 | set_update_internal(PySetObject *so, PyObject *other) |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 953 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 954 | PyObject *key, *it; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 955 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 956 | if (PyAnySet_Check(other)) |
| 957 | return set_merge(so, other); |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 958 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 959 | if (PyDict_CheckExact(other)) { |
| 960 | PyObject *value; |
| 961 | Py_ssize_t pos = 0; |
Benjamin Peterson | 8f67d08 | 2010-10-17 20:54:53 +0000 | [diff] [blame] | 962 | Py_hash_t hash; |
Serhiy Storchaka | 5ab81d7 | 2016-12-16 16:18:57 +0200 | [diff] [blame] | 963 | Py_ssize_t dictsize = PyDict_GET_SIZE(other); |
Thomas Wouters | cf297e4 | 2007-02-23 15:07:44 +0000 | [diff] [blame] | 964 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 965 | /* Do one big resize at the start, rather than |
| 966 | * incrementally resizing as we insert new keys. Expect |
| 967 | * that there will be no (or few) overlapping keys. |
| 968 | */ |
Raymond Hettinger | c2480dc | 2015-07-04 08:46:31 -0700 | [diff] [blame] | 969 | if (dictsize < 0) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 970 | return -1; |
Raymond Hettinger | 5cd87a8 | 2017-02-04 02:43:42 -0800 | [diff] [blame] | 971 | if ((so->fill + dictsize)*5 >= so->mask*3) { |
INADA Naoki | e82cf86 | 2017-04-01 17:20:25 +0900 | [diff] [blame] | 972 | if (set_table_resize(so, (so->used + dictsize)*2) != 0) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 973 | return -1; |
| 974 | } |
| 975 | while (_PyDict_Next(other, &pos, &key, &value, &hash)) { |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 976 | if (set_add_entry(so, key, hash)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 977 | return -1; |
| 978 | } |
| 979 | return 0; |
| 980 | } |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 981 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 982 | it = PyObject_GetIter(other); |
| 983 | if (it == NULL) |
| 984 | return -1; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 985 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 986 | while ((key = PyIter_Next(it)) != NULL) { |
Raymond Hettinger | 5af9e13 | 2015-05-13 01:44:36 -0700 | [diff] [blame] | 987 | if (set_add_key(so, key)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 988 | Py_DECREF(it); |
| 989 | Py_DECREF(key); |
| 990 | return -1; |
| 991 | } |
| 992 | Py_DECREF(key); |
| 993 | } |
| 994 | Py_DECREF(it); |
| 995 | if (PyErr_Occurred()) |
| 996 | return -1; |
| 997 | return 0; |
Raymond Hettinger | d794666 | 2005-08-01 21:39:29 +0000 | [diff] [blame] | 998 | } |
| 999 | |
| 1000 | static PyObject * |
Georg Brandl | c28e1fa | 2008-06-10 19:20:26 +0000 | [diff] [blame] | 1001 | set_update(PySetObject *so, PyObject *args) |
Raymond Hettinger | d794666 | 2005-08-01 21:39:29 +0000 | [diff] [blame] | 1002 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1003 | Py_ssize_t i; |
Georg Brandl | c28e1fa | 2008-06-10 19:20:26 +0000 | [diff] [blame] | 1004 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1005 | for (i=0 ; i<PyTuple_GET_SIZE(args) ; i++) { |
| 1006 | PyObject *other = PyTuple_GET_ITEM(args, i); |
Raymond Hettinger | 5af9e13 | 2015-05-13 01:44:36 -0700 | [diff] [blame] | 1007 | if (set_update_internal(so, other)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1008 | return NULL; |
| 1009 | } |
| 1010 | Py_RETURN_NONE; |
Raymond Hettinger | a38123e | 2003-11-24 22:18:49 +0000 | [diff] [blame] | 1011 | } |
| 1012 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1013 | PyDoc_STRVAR(update_doc, |
Georg Brandl | c28e1fa | 2008-06-10 19:20:26 +0000 | [diff] [blame] | 1014 | "Update a set with the union of itself and others."); |
Raymond Hettinger | a38123e | 2003-11-24 22:18:49 +0000 | [diff] [blame] | 1015 | |
Raymond Hettinger | 426d995 | 2014-05-18 21:40:20 +0100 | [diff] [blame] | 1016 | /* XXX Todo: |
| 1017 | If aligned memory allocations become available, make the |
| 1018 | set object 64 byte aligned so that most of the fields |
| 1019 | can be retrieved or updated in a single cache line. |
| 1020 | */ |
| 1021 | |
Raymond Hettinger | a38123e | 2003-11-24 22:18:49 +0000 | [diff] [blame] | 1022 | static PyObject * |
| 1023 | make_new_set(PyTypeObject *type, PyObject *iterable) |
| 1024 | { |
Raymond Hettinger | 8421d71 | 2016-04-29 01:37:05 -0700 | [diff] [blame] | 1025 | PySetObject *so; |
Raymond Hettinger | a38123e | 2003-11-24 22:18:49 +0000 | [diff] [blame] | 1026 | |
Raymond Hettinger | 8f8839e | 2013-09-07 20:26:50 -0700 | [diff] [blame] | 1027 | so = (PySetObject *)type->tp_alloc(type, 0); |
| 1028 | if (so == NULL) |
| 1029 | return NULL; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 1030 | |
Raymond Hettinger | 4ea9080 | 2013-09-07 21:01:29 -0700 | [diff] [blame] | 1031 | so->fill = 0; |
| 1032 | so->used = 0; |
| 1033 | so->mask = PySet_MINSIZE - 1; |
| 1034 | so->table = so->smalltable; |
Raymond Hettinger | 4ea9080 | 2013-09-07 21:01:29 -0700 | [diff] [blame] | 1035 | so->hash = -1; |
Raymond Hettinger | 1202a47 | 2015-01-18 13:12:42 -0800 | [diff] [blame] | 1036 | so->finger = 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1037 | so->weakreflist = NULL; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1038 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1039 | if (iterable != NULL) { |
Raymond Hettinger | 5af9e13 | 2015-05-13 01:44:36 -0700 | [diff] [blame] | 1040 | if (set_update_internal(so, iterable)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1041 | Py_DECREF(so); |
| 1042 | return NULL; |
| 1043 | } |
| 1044 | } |
Raymond Hettinger | a38123e | 2003-11-24 22:18:49 +0000 | [diff] [blame] | 1045 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1046 | return (PyObject *)so; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1047 | } |
| 1048 | |
Raymond Hettinger | 7d99f09 | 2008-11-16 11:44:54 +0000 | [diff] [blame] | 1049 | static PyObject * |
| 1050 | make_new_set_basetype(PyTypeObject *type, PyObject *iterable) |
| 1051 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1052 | if (type != &PySet_Type && type != &PyFrozenSet_Type) { |
| 1053 | if (PyType_IsSubtype(type, &PySet_Type)) |
| 1054 | type = &PySet_Type; |
| 1055 | else |
| 1056 | type = &PyFrozenSet_Type; |
| 1057 | } |
| 1058 | return make_new_set(type, iterable); |
Raymond Hettinger | 7d99f09 | 2008-11-16 11:44:54 +0000 | [diff] [blame] | 1059 | } |
| 1060 | |
Raymond Hettinger | d794666 | 2005-08-01 21:39:29 +0000 | [diff] [blame] | 1061 | /* The empty frozenset is a singleton */ |
| 1062 | static PyObject *emptyfrozenset = NULL; |
| 1063 | |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1064 | static PyObject * |
Raymond Hettinger | 50a4bb3 | 2003-11-17 16:42:33 +0000 | [diff] [blame] | 1065 | frozenset_new(PyTypeObject *type, PyObject *args, PyObject *kwds) |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1066 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1067 | PyObject *iterable = NULL, *result; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1068 | |
Serhiy Storchaka | 6cca5c8 | 2017-06-08 14:41:19 +0300 | [diff] [blame] | 1069 | if (type == &PyFrozenSet_Type && !_PyArg_NoKeywords("frozenset", kwds)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1070 | return NULL; |
Georg Brandl | 02c4287 | 2005-08-26 06:42:30 +0000 | [diff] [blame] | 1071 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1072 | if (!PyArg_UnpackTuple(args, type->tp_name, 0, 1, &iterable)) |
| 1073 | return NULL; |
Raymond Hettinger | d794666 | 2005-08-01 21:39:29 +0000 | [diff] [blame] | 1074 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1075 | if (type != &PyFrozenSet_Type) |
| 1076 | return make_new_set(type, iterable); |
Raymond Hettinger | d794666 | 2005-08-01 21:39:29 +0000 | [diff] [blame] | 1077 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1078 | if (iterable != NULL) { |
| 1079 | /* frozenset(f) is idempotent */ |
| 1080 | if (PyFrozenSet_CheckExact(iterable)) { |
| 1081 | Py_INCREF(iterable); |
| 1082 | return iterable; |
| 1083 | } |
| 1084 | result = make_new_set(type, iterable); |
| 1085 | if (result == NULL || PySet_GET_SIZE(result)) |
| 1086 | return result; |
| 1087 | Py_DECREF(result); |
| 1088 | } |
| 1089 | /* The empty frozenset is a singleton */ |
| 1090 | if (emptyfrozenset == NULL) |
| 1091 | emptyfrozenset = make_new_set(type, NULL); |
| 1092 | Py_XINCREF(emptyfrozenset); |
| 1093 | return emptyfrozenset; |
Raymond Hettinger | d794666 | 2005-08-01 21:39:29 +0000 | [diff] [blame] | 1094 | } |
| 1095 | |
Raymond Hettinger | 50a4bb3 | 2003-11-17 16:42:33 +0000 | [diff] [blame] | 1096 | static PyObject * |
| 1097 | set_new(PyTypeObject *type, PyObject *args, PyObject *kwds) |
| 1098 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1099 | return make_new_set(type, NULL); |
Raymond Hettinger | 50a4bb3 | 2003-11-17 16:42:33 +0000 | [diff] [blame] | 1100 | } |
| 1101 | |
Raymond Hettinger | 934d63e | 2005-07-31 01:33:10 +0000 | [diff] [blame] | 1102 | /* set_swap_bodies() switches the contents of any two sets by moving their |
| 1103 | internal data pointers and, if needed, copying the internal smalltables. |
| 1104 | Semantically equivalent to: |
| 1105 | |
| 1106 | t=set(a); a.clear(); a.update(b); b.clear(); b.update(t); del t |
| 1107 | |
| 1108 | The function always succeeds and it leaves both objects in a stable state. |
Raymond Hettinger | 4d45c10 | 2015-01-25 16:27:40 -0800 | [diff] [blame] | 1109 | Useful for operations that update in-place (by allowing an intermediate |
| 1110 | result to be swapped into one of the original inputs). |
Raymond Hettinger | 934d63e | 2005-07-31 01:33:10 +0000 | [diff] [blame] | 1111 | */ |
| 1112 | |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 1113 | static void |
| 1114 | set_swap_bodies(PySetObject *a, PySetObject *b) |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1115 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1116 | Py_ssize_t t; |
| 1117 | setentry *u; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1118 | setentry tab[PySet_MINSIZE]; |
Antoine Pitrou | fbb1c61 | 2010-10-23 17:37:54 +0000 | [diff] [blame] | 1119 | Py_hash_t h; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 1120 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1121 | t = a->fill; a->fill = b->fill; b->fill = t; |
| 1122 | t = a->used; a->used = b->used; b->used = t; |
| 1123 | t = a->mask; a->mask = b->mask; b->mask = t; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 1124 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1125 | u = a->table; |
| 1126 | if (a->table == a->smalltable) |
| 1127 | u = b->smalltable; |
| 1128 | a->table = b->table; |
| 1129 | if (b->table == b->smalltable) |
| 1130 | a->table = a->smalltable; |
| 1131 | b->table = u; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 1132 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1133 | if (a->table == a->smalltable || b->table == b->smalltable) { |
| 1134 | memcpy(tab, a->smalltable, sizeof(tab)); |
| 1135 | memcpy(a->smalltable, b->smalltable, sizeof(tab)); |
| 1136 | memcpy(b->smalltable, tab, sizeof(tab)); |
| 1137 | } |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 1138 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1139 | if (PyType_IsSubtype(Py_TYPE(a), &PyFrozenSet_Type) && |
| 1140 | PyType_IsSubtype(Py_TYPE(b), &PyFrozenSet_Type)) { |
| 1141 | h = a->hash; a->hash = b->hash; b->hash = h; |
| 1142 | } else { |
| 1143 | a->hash = -1; |
| 1144 | b->hash = -1; |
| 1145 | } |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1146 | } |
| 1147 | |
Raymond Hettinger | 8f5cdaa | 2003-12-13 11:26:12 +0000 | [diff] [blame] | 1148 | static PyObject * |
Siddhesh Poyarekar | 55edd0c | 2018-04-30 00:29:33 +0530 | [diff] [blame] | 1149 | set_copy(PySetObject *so, PyObject *Py_UNUSED(ignored)) |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1150 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1151 | return make_new_set_basetype(Py_TYPE(so), (PyObject *)so); |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1152 | } |
| 1153 | |
Raymond Hettinger | 49ba4c3 | 2003-11-23 02:49:05 +0000 | [diff] [blame] | 1154 | static PyObject * |
Siddhesh Poyarekar | 55edd0c | 2018-04-30 00:29:33 +0530 | [diff] [blame] | 1155 | frozenset_copy(PySetObject *so, PyObject *Py_UNUSED(ignored)) |
Raymond Hettinger | 49ba4c3 | 2003-11-23 02:49:05 +0000 | [diff] [blame] | 1156 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1157 | if (PyFrozenSet_CheckExact(so)) { |
| 1158 | Py_INCREF(so); |
| 1159 | return (PyObject *)so; |
| 1160 | } |
Siddhesh Poyarekar | 55edd0c | 2018-04-30 00:29:33 +0530 | [diff] [blame] | 1161 | return set_copy(so, NULL); |
Raymond Hettinger | 49ba4c3 | 2003-11-23 02:49:05 +0000 | [diff] [blame] | 1162 | } |
| 1163 | |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1164 | PyDoc_STRVAR(copy_doc, "Return a shallow copy of a set."); |
| 1165 | |
| 1166 | static PyObject * |
Siddhesh Poyarekar | 55edd0c | 2018-04-30 00:29:33 +0530 | [diff] [blame] | 1167 | set_clear(PySetObject *so, PyObject *Py_UNUSED(ignored)) |
Raymond Hettinger | c991db2 | 2005-08-11 07:58:45 +0000 | [diff] [blame] | 1168 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1169 | set_clear_internal(so); |
| 1170 | Py_RETURN_NONE; |
Raymond Hettinger | c991db2 | 2005-08-11 07:58:45 +0000 | [diff] [blame] | 1171 | } |
| 1172 | |
| 1173 | PyDoc_STRVAR(clear_doc, "Remove all elements from this set."); |
| 1174 | |
| 1175 | static PyObject * |
Georg Brandl | c28e1fa | 2008-06-10 19:20:26 +0000 | [diff] [blame] | 1176 | set_union(PySetObject *so, PyObject *args) |
Raymond Hettinger | f5f41bf | 2003-11-24 02:57:33 +0000 | [diff] [blame] | 1177 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1178 | PySetObject *result; |
| 1179 | PyObject *other; |
| 1180 | Py_ssize_t i; |
Georg Brandl | c28e1fa | 2008-06-10 19:20:26 +0000 | [diff] [blame] | 1181 | |
Siddhesh Poyarekar | 55edd0c | 2018-04-30 00:29:33 +0530 | [diff] [blame] | 1182 | result = (PySetObject *)set_copy(so, NULL); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1183 | if (result == NULL) |
| 1184 | return NULL; |
Georg Brandl | c28e1fa | 2008-06-10 19:20:26 +0000 | [diff] [blame] | 1185 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1186 | for (i=0 ; i<PyTuple_GET_SIZE(args) ; i++) { |
| 1187 | other = PyTuple_GET_ITEM(args, i); |
| 1188 | if ((PyObject *)so == other) |
| 1189 | continue; |
Raymond Hettinger | 5af9e13 | 2015-05-13 01:44:36 -0700 | [diff] [blame] | 1190 | if (set_update_internal(result, other)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1191 | Py_DECREF(result); |
| 1192 | return NULL; |
| 1193 | } |
| 1194 | } |
| 1195 | return (PyObject *)result; |
Georg Brandl | c28e1fa | 2008-06-10 19:20:26 +0000 | [diff] [blame] | 1196 | } |
| 1197 | |
| 1198 | PyDoc_STRVAR(union_doc, |
| 1199 | "Return the union of sets as a new set.\n\ |
| 1200 | \n\ |
| 1201 | (i.e. all elements that are in either set.)"); |
| 1202 | |
| 1203 | static PyObject * |
| 1204 | set_or(PySetObject *so, PyObject *other) |
| 1205 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1206 | PySetObject *result; |
Georg Brandl | c28e1fa | 2008-06-10 19:20:26 +0000 | [diff] [blame] | 1207 | |
Brian Curtin | dfc80e3 | 2011-08-10 20:28:54 -0500 | [diff] [blame] | 1208 | if (!PyAnySet_Check(so) || !PyAnySet_Check(other)) |
| 1209 | Py_RETURN_NOTIMPLEMENTED; |
Raymond Hettinger | f5f41bf | 2003-11-24 02:57:33 +0000 | [diff] [blame] | 1210 | |
Siddhesh Poyarekar | 55edd0c | 2018-04-30 00:29:33 +0530 | [diff] [blame] | 1211 | result = (PySetObject *)set_copy(so, NULL); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1212 | if (result == NULL) |
| 1213 | return NULL; |
| 1214 | if ((PyObject *)so == other) |
| 1215 | return (PyObject *)result; |
Raymond Hettinger | 5af9e13 | 2015-05-13 01:44:36 -0700 | [diff] [blame] | 1216 | if (set_update_internal(result, other)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1217 | Py_DECREF(result); |
| 1218 | return NULL; |
| 1219 | } |
| 1220 | return (PyObject *)result; |
Raymond Hettinger | f5f41bf | 2003-11-24 02:57:33 +0000 | [diff] [blame] | 1221 | } |
| 1222 | |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1223 | static PyObject * |
| 1224 | set_ior(PySetObject *so, PyObject *other) |
| 1225 | { |
Brian Curtin | dfc80e3 | 2011-08-10 20:28:54 -0500 | [diff] [blame] | 1226 | if (!PyAnySet_Check(other)) |
| 1227 | Py_RETURN_NOTIMPLEMENTED; |
| 1228 | |
Raymond Hettinger | 5af9e13 | 2015-05-13 01:44:36 -0700 | [diff] [blame] | 1229 | if (set_update_internal(so, other)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1230 | return NULL; |
| 1231 | Py_INCREF(so); |
| 1232 | return (PyObject *)so; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1233 | } |
| 1234 | |
| 1235 | static PyObject * |
| 1236 | set_intersection(PySetObject *so, PyObject *other) |
| 1237 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1238 | PySetObject *result; |
| 1239 | PyObject *key, *it, *tmp; |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1240 | Py_hash_t hash; |
| 1241 | int rv; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1242 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1243 | if ((PyObject *)so == other) |
Siddhesh Poyarekar | 55edd0c | 2018-04-30 00:29:33 +0530 | [diff] [blame] | 1244 | return set_copy(so, NULL); |
Raymond Hettinger | c991db2 | 2005-08-11 07:58:45 +0000 | [diff] [blame] | 1245 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1246 | result = (PySetObject *)make_new_set_basetype(Py_TYPE(so), NULL); |
| 1247 | if (result == NULL) |
| 1248 | return NULL; |
Raymond Hettinger | f5f41bf | 2003-11-24 02:57:33 +0000 | [diff] [blame] | 1249 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1250 | if (PyAnySet_Check(other)) { |
| 1251 | Py_ssize_t pos = 0; |
| 1252 | setentry *entry; |
Raymond Hettinger | b02c35e | 2005-08-12 20:48:39 +0000 | [diff] [blame] | 1253 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1254 | if (PySet_GET_SIZE(other) > PySet_GET_SIZE(so)) { |
| 1255 | tmp = (PyObject *)so; |
| 1256 | so = (PySetObject *)other; |
| 1257 | other = tmp; |
| 1258 | } |
Raymond Hettinger | b02c35e | 2005-08-12 20:48:39 +0000 | [diff] [blame] | 1259 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1260 | while (set_next((PySetObject *)other, &pos, &entry)) { |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1261 | key = entry->key; |
| 1262 | hash = entry->hash; |
| 1263 | rv = set_contains_entry(so, key, hash); |
Raymond Hettinger | b322326 | 2015-07-03 23:37:16 -0700 | [diff] [blame] | 1264 | if (rv < 0) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1265 | Py_DECREF(result); |
| 1266 | return NULL; |
| 1267 | } |
| 1268 | if (rv) { |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1269 | if (set_add_entry(result, key, hash)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1270 | Py_DECREF(result); |
| 1271 | return NULL; |
| 1272 | } |
| 1273 | } |
| 1274 | } |
| 1275 | return (PyObject *)result; |
| 1276 | } |
Raymond Hettinger | f5f41bf | 2003-11-24 02:57:33 +0000 | [diff] [blame] | 1277 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1278 | it = PyObject_GetIter(other); |
| 1279 | if (it == NULL) { |
| 1280 | Py_DECREF(result); |
| 1281 | return NULL; |
| 1282 | } |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1283 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1284 | while ((key = PyIter_Next(it)) != NULL) { |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1285 | hash = PyObject_Hash(key); |
Raymond Hettinger | 11ce8e6 | 2015-07-06 19:08:49 -0700 | [diff] [blame] | 1286 | if (hash == -1) |
| 1287 | goto error; |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1288 | rv = set_contains_entry(so, key, hash); |
Raymond Hettinger | 11ce8e6 | 2015-07-06 19:08:49 -0700 | [diff] [blame] | 1289 | if (rv < 0) |
| 1290 | goto error; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1291 | if (rv) { |
Raymond Hettinger | 11ce8e6 | 2015-07-06 19:08:49 -0700 | [diff] [blame] | 1292 | if (set_add_entry(result, key, hash)) |
| 1293 | goto error; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1294 | } |
| 1295 | Py_DECREF(key); |
| 1296 | } |
| 1297 | Py_DECREF(it); |
| 1298 | if (PyErr_Occurred()) { |
| 1299 | Py_DECREF(result); |
| 1300 | return NULL; |
| 1301 | } |
| 1302 | return (PyObject *)result; |
Raymond Hettinger | 11ce8e6 | 2015-07-06 19:08:49 -0700 | [diff] [blame] | 1303 | error: |
| 1304 | Py_DECREF(it); |
| 1305 | Py_DECREF(result); |
| 1306 | Py_DECREF(key); |
| 1307 | return NULL; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1308 | } |
| 1309 | |
Georg Brandl | c28e1fa | 2008-06-10 19:20:26 +0000 | [diff] [blame] | 1310 | static PyObject * |
| 1311 | set_intersection_multi(PySetObject *so, PyObject *args) |
| 1312 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1313 | Py_ssize_t i; |
| 1314 | PyObject *result = (PyObject *)so; |
Georg Brandl | c28e1fa | 2008-06-10 19:20:26 +0000 | [diff] [blame] | 1315 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1316 | if (PyTuple_GET_SIZE(args) == 0) |
Siddhesh Poyarekar | 55edd0c | 2018-04-30 00:29:33 +0530 | [diff] [blame] | 1317 | return set_copy(so, NULL); |
Amaury Forgeot d'Arc | fdfe62d | 2008-06-17 20:36:03 +0000 | [diff] [blame] | 1318 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1319 | Py_INCREF(so); |
| 1320 | for (i=0 ; i<PyTuple_GET_SIZE(args) ; i++) { |
| 1321 | PyObject *other = PyTuple_GET_ITEM(args, i); |
| 1322 | PyObject *newresult = set_intersection((PySetObject *)result, other); |
| 1323 | if (newresult == NULL) { |
| 1324 | Py_DECREF(result); |
| 1325 | return NULL; |
| 1326 | } |
| 1327 | Py_DECREF(result); |
| 1328 | result = newresult; |
| 1329 | } |
| 1330 | return result; |
Georg Brandl | c28e1fa | 2008-06-10 19:20:26 +0000 | [diff] [blame] | 1331 | } |
| 1332 | |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1333 | PyDoc_STRVAR(intersection_doc, |
| 1334 | "Return the intersection of two sets as a new set.\n\ |
| 1335 | \n\ |
| 1336 | (i.e. all elements that are in both sets.)"); |
| 1337 | |
| 1338 | static PyObject * |
| 1339 | set_intersection_update(PySetObject *so, PyObject *other) |
| 1340 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1341 | PyObject *tmp; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1342 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1343 | tmp = set_intersection(so, other); |
| 1344 | if (tmp == NULL) |
| 1345 | return NULL; |
| 1346 | set_swap_bodies(so, (PySetObject *)tmp); |
| 1347 | Py_DECREF(tmp); |
| 1348 | Py_RETURN_NONE; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1349 | } |
| 1350 | |
Georg Brandl | c28e1fa | 2008-06-10 19:20:26 +0000 | [diff] [blame] | 1351 | static PyObject * |
| 1352 | set_intersection_update_multi(PySetObject *so, PyObject *args) |
| 1353 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1354 | PyObject *tmp; |
Georg Brandl | c28e1fa | 2008-06-10 19:20:26 +0000 | [diff] [blame] | 1355 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1356 | tmp = set_intersection_multi(so, args); |
| 1357 | if (tmp == NULL) |
| 1358 | return NULL; |
| 1359 | set_swap_bodies(so, (PySetObject *)tmp); |
| 1360 | Py_DECREF(tmp); |
| 1361 | Py_RETURN_NONE; |
Georg Brandl | c28e1fa | 2008-06-10 19:20:26 +0000 | [diff] [blame] | 1362 | } |
| 1363 | |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1364 | PyDoc_STRVAR(intersection_update_doc, |
| 1365 | "Update a set with the intersection of itself and another."); |
| 1366 | |
| 1367 | static PyObject * |
| 1368 | set_and(PySetObject *so, PyObject *other) |
| 1369 | { |
Brian Curtin | dfc80e3 | 2011-08-10 20:28:54 -0500 | [diff] [blame] | 1370 | if (!PyAnySet_Check(so) || !PyAnySet_Check(other)) |
| 1371 | Py_RETURN_NOTIMPLEMENTED; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1372 | return set_intersection(so, other); |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1373 | } |
| 1374 | |
| 1375 | static PyObject * |
| 1376 | set_iand(PySetObject *so, PyObject *other) |
| 1377 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1378 | PyObject *result; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1379 | |
Brian Curtin | dfc80e3 | 2011-08-10 20:28:54 -0500 | [diff] [blame] | 1380 | if (!PyAnySet_Check(other)) |
| 1381 | Py_RETURN_NOTIMPLEMENTED; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1382 | result = set_intersection_update(so, other); |
| 1383 | if (result == NULL) |
| 1384 | return NULL; |
| 1385 | Py_DECREF(result); |
| 1386 | Py_INCREF(so); |
| 1387 | return (PyObject *)so; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1388 | } |
| 1389 | |
Guido van Rossum | 58da931 | 2007-11-10 23:39:45 +0000 | [diff] [blame] | 1390 | static PyObject * |
| 1391 | set_isdisjoint(PySetObject *so, PyObject *other) |
| 1392 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1393 | PyObject *key, *it, *tmp; |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1394 | int rv; |
Guido van Rossum | 58da931 | 2007-11-10 23:39:45 +0000 | [diff] [blame] | 1395 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1396 | if ((PyObject *)so == other) { |
| 1397 | if (PySet_GET_SIZE(so) == 0) |
| 1398 | Py_RETURN_TRUE; |
| 1399 | else |
| 1400 | Py_RETURN_FALSE; |
| 1401 | } |
Guido van Rossum | 58da931 | 2007-11-10 23:39:45 +0000 | [diff] [blame] | 1402 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1403 | if (PyAnySet_CheckExact(other)) { |
| 1404 | Py_ssize_t pos = 0; |
| 1405 | setentry *entry; |
Guido van Rossum | 58da931 | 2007-11-10 23:39:45 +0000 | [diff] [blame] | 1406 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1407 | if (PySet_GET_SIZE(other) > PySet_GET_SIZE(so)) { |
| 1408 | tmp = (PyObject *)so; |
| 1409 | so = (PySetObject *)other; |
| 1410 | other = tmp; |
| 1411 | } |
| 1412 | while (set_next((PySetObject *)other, &pos, &entry)) { |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1413 | rv = set_contains_entry(so, entry->key, entry->hash); |
Raymond Hettinger | b322326 | 2015-07-03 23:37:16 -0700 | [diff] [blame] | 1414 | if (rv < 0) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1415 | return NULL; |
| 1416 | if (rv) |
| 1417 | Py_RETURN_FALSE; |
| 1418 | } |
| 1419 | Py_RETURN_TRUE; |
| 1420 | } |
Guido van Rossum | 58da931 | 2007-11-10 23:39:45 +0000 | [diff] [blame] | 1421 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1422 | it = PyObject_GetIter(other); |
| 1423 | if (it == NULL) |
| 1424 | return NULL; |
Guido van Rossum | 58da931 | 2007-11-10 23:39:45 +0000 | [diff] [blame] | 1425 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1426 | while ((key = PyIter_Next(it)) != NULL) { |
Benjamin Peterson | 8f67d08 | 2010-10-17 20:54:53 +0000 | [diff] [blame] | 1427 | Py_hash_t hash = PyObject_Hash(key); |
Guido van Rossum | 58da931 | 2007-11-10 23:39:45 +0000 | [diff] [blame] | 1428 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1429 | if (hash == -1) { |
| 1430 | Py_DECREF(key); |
| 1431 | Py_DECREF(it); |
| 1432 | return NULL; |
| 1433 | } |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1434 | rv = set_contains_entry(so, key, hash); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1435 | Py_DECREF(key); |
Raymond Hettinger | c2480dc | 2015-07-04 08:46:31 -0700 | [diff] [blame] | 1436 | if (rv < 0) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1437 | Py_DECREF(it); |
| 1438 | return NULL; |
| 1439 | } |
| 1440 | if (rv) { |
| 1441 | Py_DECREF(it); |
| 1442 | Py_RETURN_FALSE; |
| 1443 | } |
| 1444 | } |
| 1445 | Py_DECREF(it); |
| 1446 | if (PyErr_Occurred()) |
| 1447 | return NULL; |
| 1448 | Py_RETURN_TRUE; |
Guido van Rossum | 58da931 | 2007-11-10 23:39:45 +0000 | [diff] [blame] | 1449 | } |
| 1450 | |
| 1451 | PyDoc_STRVAR(isdisjoint_doc, |
| 1452 | "Return True if two sets have a null intersection."); |
| 1453 | |
Neal Norwitz | 6576bd8 | 2005-11-13 18:41:28 +0000 | [diff] [blame] | 1454 | static int |
Raymond Hettinger | c991db2 | 2005-08-11 07:58:45 +0000 | [diff] [blame] | 1455 | set_difference_update_internal(PySetObject *so, PyObject *other) |
| 1456 | { |
Raymond Hettinger | 4103e4d | 2016-09-11 22:02:28 -0700 | [diff] [blame] | 1457 | if (PySet_GET_SIZE(so) == 0) { |
| 1458 | return 0; |
| 1459 | } |
| 1460 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1461 | if ((PyObject *)so == other) |
| 1462 | return set_clear_internal(so); |
Raymond Hettinger | c991db2 | 2005-08-11 07:58:45 +0000 | [diff] [blame] | 1463 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1464 | if (PyAnySet_Check(other)) { |
| 1465 | setentry *entry; |
| 1466 | Py_ssize_t pos = 0; |
Raymond Hettinger | c991db2 | 2005-08-11 07:58:45 +0000 | [diff] [blame] | 1467 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1468 | while (set_next((PySetObject *)other, &pos, &entry)) |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1469 | if (set_discard_entry(so, entry->key, entry->hash) < 0) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1470 | return -1; |
| 1471 | } else { |
| 1472 | PyObject *key, *it; |
| 1473 | it = PyObject_GetIter(other); |
| 1474 | if (it == NULL) |
| 1475 | return -1; |
| 1476 | |
| 1477 | while ((key = PyIter_Next(it)) != NULL) { |
Raymond Hettinger | b322326 | 2015-07-03 23:37:16 -0700 | [diff] [blame] | 1478 | if (set_discard_key(so, key) < 0) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1479 | Py_DECREF(it); |
| 1480 | Py_DECREF(key); |
| 1481 | return -1; |
| 1482 | } |
| 1483 | Py_DECREF(key); |
| 1484 | } |
| 1485 | Py_DECREF(it); |
| 1486 | if (PyErr_Occurred()) |
| 1487 | return -1; |
| 1488 | } |
Raymond Hettinger | e186c76 | 2015-07-04 11:28:35 -0700 | [diff] [blame] | 1489 | /* If more than 1/4th are dummies, then resize them away. */ |
| 1490 | if ((size_t)(so->fill - so->used) <= (size_t)so->mask / 4) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1491 | return 0; |
INADA Naoki | e82cf86 | 2017-04-01 17:20:25 +0900 | [diff] [blame] | 1492 | return set_table_resize(so, so->used>50000 ? so->used*2 : so->used*4); |
Raymond Hettinger | c991db2 | 2005-08-11 07:58:45 +0000 | [diff] [blame] | 1493 | } |
| 1494 | |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1495 | static PyObject * |
Amaury Forgeot d'Arc | fdfe62d | 2008-06-17 20:36:03 +0000 | [diff] [blame] | 1496 | set_difference_update(PySetObject *so, PyObject *args) |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1497 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1498 | Py_ssize_t i; |
Amaury Forgeot d'Arc | fdfe62d | 2008-06-17 20:36:03 +0000 | [diff] [blame] | 1499 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1500 | for (i=0 ; i<PyTuple_GET_SIZE(args) ; i++) { |
| 1501 | PyObject *other = PyTuple_GET_ITEM(args, i); |
Raymond Hettinger | 5af9e13 | 2015-05-13 01:44:36 -0700 | [diff] [blame] | 1502 | if (set_difference_update_internal(so, other)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1503 | return NULL; |
| 1504 | } |
| 1505 | Py_RETURN_NONE; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1506 | } |
| 1507 | |
| 1508 | PyDoc_STRVAR(difference_update_doc, |
| 1509 | "Remove all elements of another set from this set."); |
| 1510 | |
| 1511 | static PyObject * |
Antoine Pitrou | 715f3cd | 2010-11-30 22:23:20 +0000 | [diff] [blame] | 1512 | set_copy_and_difference(PySetObject *so, PyObject *other) |
| 1513 | { |
| 1514 | PyObject *result; |
| 1515 | |
Siddhesh Poyarekar | 55edd0c | 2018-04-30 00:29:33 +0530 | [diff] [blame] | 1516 | result = set_copy(so, NULL); |
Antoine Pitrou | 715f3cd | 2010-11-30 22:23:20 +0000 | [diff] [blame] | 1517 | if (result == NULL) |
| 1518 | return NULL; |
Raymond Hettinger | b322326 | 2015-07-03 23:37:16 -0700 | [diff] [blame] | 1519 | if (set_difference_update_internal((PySetObject *) result, other) == 0) |
Antoine Pitrou | 715f3cd | 2010-11-30 22:23:20 +0000 | [diff] [blame] | 1520 | return result; |
| 1521 | Py_DECREF(result); |
| 1522 | return NULL; |
| 1523 | } |
| 1524 | |
| 1525 | static PyObject * |
Raymond Hettinger | fb4e33a | 2003-12-15 13:23:55 +0000 | [diff] [blame] | 1526 | set_difference(PySetObject *so, PyObject *other) |
| 1527 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1528 | PyObject *result; |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1529 | PyObject *key; |
| 1530 | Py_hash_t hash; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1531 | setentry *entry; |
Serhiy Storchaka | bf623ae | 2017-04-19 20:03:52 +0300 | [diff] [blame] | 1532 | Py_ssize_t pos = 0, other_size; |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1533 | int rv; |
Raymond Hettinger | fb4e33a | 2003-12-15 13:23:55 +0000 | [diff] [blame] | 1534 | |
Raymond Hettinger | 4103e4d | 2016-09-11 22:02:28 -0700 | [diff] [blame] | 1535 | if (PySet_GET_SIZE(so) == 0) { |
Siddhesh Poyarekar | 55edd0c | 2018-04-30 00:29:33 +0530 | [diff] [blame] | 1536 | return set_copy(so, NULL); |
Raymond Hettinger | 4103e4d | 2016-09-11 22:02:28 -0700 | [diff] [blame] | 1537 | } |
| 1538 | |
Serhiy Storchaka | bf623ae | 2017-04-19 20:03:52 +0300 | [diff] [blame] | 1539 | if (PyAnySet_Check(other)) { |
| 1540 | other_size = PySet_GET_SIZE(other); |
| 1541 | } |
| 1542 | else if (PyDict_CheckExact(other)) { |
| 1543 | other_size = PyDict_GET_SIZE(other); |
| 1544 | } |
| 1545 | else { |
Antoine Pitrou | 715f3cd | 2010-11-30 22:23:20 +0000 | [diff] [blame] | 1546 | return set_copy_and_difference(so, other); |
| 1547 | } |
| 1548 | |
| 1549 | /* If len(so) much more than len(other), it's more efficient to simply copy |
| 1550 | * so and then iterate other looking for common elements. */ |
Serhiy Storchaka | bf623ae | 2017-04-19 20:03:52 +0300 | [diff] [blame] | 1551 | if ((PySet_GET_SIZE(so) >> 2) > other_size) { |
Antoine Pitrou | 715f3cd | 2010-11-30 22:23:20 +0000 | [diff] [blame] | 1552 | return set_copy_and_difference(so, other); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1553 | } |
Raymond Hettinger | fb4e33a | 2003-12-15 13:23:55 +0000 | [diff] [blame] | 1554 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1555 | result = make_new_set_basetype(Py_TYPE(so), NULL); |
| 1556 | if (result == NULL) |
| 1557 | return NULL; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 1558 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1559 | if (PyDict_CheckExact(other)) { |
| 1560 | while (set_next(so, &pos, &entry)) { |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1561 | key = entry->key; |
| 1562 | hash = entry->hash; |
Raymond Hettinger | 15f0869 | 2015-07-03 17:21:17 -0700 | [diff] [blame] | 1563 | rv = _PyDict_Contains(other, key, hash); |
Serhiy Storchaka | fa494fd | 2015-05-30 17:45:22 +0300 | [diff] [blame] | 1564 | if (rv < 0) { |
| 1565 | Py_DECREF(result); |
| 1566 | return NULL; |
| 1567 | } |
| 1568 | if (!rv) { |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1569 | if (set_add_entry((PySetObject *)result, key, hash)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1570 | Py_DECREF(result); |
| 1571 | return NULL; |
| 1572 | } |
| 1573 | } |
| 1574 | } |
| 1575 | return result; |
| 1576 | } |
| 1577 | |
Antoine Pitrou | 715f3cd | 2010-11-30 22:23:20 +0000 | [diff] [blame] | 1578 | /* Iterate over so, checking for common elements in other. */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1579 | while (set_next(so, &pos, &entry)) { |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1580 | key = entry->key; |
| 1581 | hash = entry->hash; |
| 1582 | rv = set_contains_entry((PySetObject *)other, key, hash); |
Raymond Hettinger | b322326 | 2015-07-03 23:37:16 -0700 | [diff] [blame] | 1583 | if (rv < 0) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1584 | Py_DECREF(result); |
| 1585 | return NULL; |
| 1586 | } |
| 1587 | if (!rv) { |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1588 | if (set_add_entry((PySetObject *)result, key, hash)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1589 | Py_DECREF(result); |
| 1590 | return NULL; |
| 1591 | } |
| 1592 | } |
| 1593 | } |
| 1594 | return result; |
Raymond Hettinger | fb4e33a | 2003-12-15 13:23:55 +0000 | [diff] [blame] | 1595 | } |
| 1596 | |
Amaury Forgeot d'Arc | fdfe62d | 2008-06-17 20:36:03 +0000 | [diff] [blame] | 1597 | static PyObject * |
| 1598 | set_difference_multi(PySetObject *so, PyObject *args) |
| 1599 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1600 | Py_ssize_t i; |
| 1601 | PyObject *result, *other; |
Amaury Forgeot d'Arc | fdfe62d | 2008-06-17 20:36:03 +0000 | [diff] [blame] | 1602 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1603 | if (PyTuple_GET_SIZE(args) == 0) |
Siddhesh Poyarekar | 55edd0c | 2018-04-30 00:29:33 +0530 | [diff] [blame] | 1604 | return set_copy(so, NULL); |
Amaury Forgeot d'Arc | fdfe62d | 2008-06-17 20:36:03 +0000 | [diff] [blame] | 1605 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1606 | other = PyTuple_GET_ITEM(args, 0); |
| 1607 | result = set_difference(so, other); |
| 1608 | if (result == NULL) |
| 1609 | return NULL; |
Amaury Forgeot d'Arc | fdfe62d | 2008-06-17 20:36:03 +0000 | [diff] [blame] | 1610 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1611 | for (i=1 ; i<PyTuple_GET_SIZE(args) ; i++) { |
| 1612 | other = PyTuple_GET_ITEM(args, i); |
Raymond Hettinger | 5af9e13 | 2015-05-13 01:44:36 -0700 | [diff] [blame] | 1613 | if (set_difference_update_internal((PySetObject *)result, other)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1614 | Py_DECREF(result); |
| 1615 | return NULL; |
| 1616 | } |
| 1617 | } |
| 1618 | return result; |
Amaury Forgeot d'Arc | fdfe62d | 2008-06-17 20:36:03 +0000 | [diff] [blame] | 1619 | } |
| 1620 | |
Raymond Hettinger | fb4e33a | 2003-12-15 13:23:55 +0000 | [diff] [blame] | 1621 | PyDoc_STRVAR(difference_doc, |
Amaury Forgeot d'Arc | fdfe62d | 2008-06-17 20:36:03 +0000 | [diff] [blame] | 1622 | "Return the difference of two or more sets as a new set.\n\ |
Raymond Hettinger | fb4e33a | 2003-12-15 13:23:55 +0000 | [diff] [blame] | 1623 | \n\ |
Amaury Forgeot d'Arc | fdfe62d | 2008-06-17 20:36:03 +0000 | [diff] [blame] | 1624 | (i.e. all elements that are in this set but not the others.)"); |
Raymond Hettinger | fb4e33a | 2003-12-15 13:23:55 +0000 | [diff] [blame] | 1625 | static PyObject * |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1626 | set_sub(PySetObject *so, PyObject *other) |
| 1627 | { |
Brian Curtin | dfc80e3 | 2011-08-10 20:28:54 -0500 | [diff] [blame] | 1628 | if (!PyAnySet_Check(so) || !PyAnySet_Check(other)) |
| 1629 | Py_RETURN_NOTIMPLEMENTED; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1630 | return set_difference(so, other); |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1631 | } |
| 1632 | |
| 1633 | static PyObject * |
| 1634 | set_isub(PySetObject *so, PyObject *other) |
| 1635 | { |
Brian Curtin | dfc80e3 | 2011-08-10 20:28:54 -0500 | [diff] [blame] | 1636 | if (!PyAnySet_Check(other)) |
| 1637 | Py_RETURN_NOTIMPLEMENTED; |
Raymond Hettinger | 5af9e13 | 2015-05-13 01:44:36 -0700 | [diff] [blame] | 1638 | if (set_difference_update_internal(so, other)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1639 | return NULL; |
| 1640 | Py_INCREF(so); |
| 1641 | return (PyObject *)so; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1642 | } |
| 1643 | |
| 1644 | static PyObject * |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1645 | set_symmetric_difference_update(PySetObject *so, PyObject *other) |
| 1646 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1647 | PySetObject *otherset; |
| 1648 | PyObject *key; |
| 1649 | Py_ssize_t pos = 0; |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1650 | Py_hash_t hash; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1651 | setentry *entry; |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1652 | int rv; |
Raymond Hettinger | c991db2 | 2005-08-11 07:58:45 +0000 | [diff] [blame] | 1653 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1654 | if ((PyObject *)so == other) |
Siddhesh Poyarekar | 55edd0c | 2018-04-30 00:29:33 +0530 | [diff] [blame] | 1655 | return set_clear(so, NULL); |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1656 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1657 | if (PyDict_CheckExact(other)) { |
| 1658 | PyObject *value; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1659 | while (_PyDict_Next(other, &pos, &key, &value, &hash)) { |
Raymond Hettinger | faf7b7f | 2010-09-03 10:00:50 +0000 | [diff] [blame] | 1660 | Py_INCREF(key); |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1661 | rv = set_discard_entry(so, key, hash); |
Raymond Hettinger | b322326 | 2015-07-03 23:37:16 -0700 | [diff] [blame] | 1662 | if (rv < 0) { |
Raymond Hettinger | faf7b7f | 2010-09-03 10:00:50 +0000 | [diff] [blame] | 1663 | Py_DECREF(key); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1664 | return NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1665 | } |
Raymond Hettinger | faf7b7f | 2010-09-03 10:00:50 +0000 | [diff] [blame] | 1666 | if (rv == DISCARD_NOTFOUND) { |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1667 | if (set_add_entry(so, key, hash)) { |
Raymond Hettinger | faf7b7f | 2010-09-03 10:00:50 +0000 | [diff] [blame] | 1668 | Py_DECREF(key); |
| 1669 | return NULL; |
| 1670 | } |
| 1671 | } |
Georg Brandl | 2d44449 | 2010-09-03 10:52:55 +0000 | [diff] [blame] | 1672 | Py_DECREF(key); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1673 | } |
| 1674 | Py_RETURN_NONE; |
| 1675 | } |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 1676 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1677 | if (PyAnySet_Check(other)) { |
| 1678 | Py_INCREF(other); |
| 1679 | otherset = (PySetObject *)other; |
| 1680 | } else { |
| 1681 | otherset = (PySetObject *)make_new_set_basetype(Py_TYPE(so), other); |
| 1682 | if (otherset == NULL) |
| 1683 | return NULL; |
| 1684 | } |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1685 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1686 | while (set_next(otherset, &pos, &entry)) { |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1687 | key = entry->key; |
| 1688 | hash = entry->hash; |
| 1689 | rv = set_discard_entry(so, key, hash); |
Raymond Hettinger | b322326 | 2015-07-03 23:37:16 -0700 | [diff] [blame] | 1690 | if (rv < 0) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1691 | Py_DECREF(otherset); |
| 1692 | return NULL; |
| 1693 | } |
| 1694 | if (rv == DISCARD_NOTFOUND) { |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1695 | if (set_add_entry(so, key, hash)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1696 | Py_DECREF(otherset); |
| 1697 | return NULL; |
| 1698 | } |
| 1699 | } |
| 1700 | } |
| 1701 | Py_DECREF(otherset); |
| 1702 | Py_RETURN_NONE; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1703 | } |
| 1704 | |
| 1705 | PyDoc_STRVAR(symmetric_difference_update_doc, |
| 1706 | "Update a set with the symmetric difference of itself and another."); |
| 1707 | |
| 1708 | static PyObject * |
Raymond Hettinger | f5f41bf | 2003-11-24 02:57:33 +0000 | [diff] [blame] | 1709 | set_symmetric_difference(PySetObject *so, PyObject *other) |
| 1710 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1711 | PyObject *rv; |
| 1712 | PySetObject *otherset; |
Raymond Hettinger | f5f41bf | 2003-11-24 02:57:33 +0000 | [diff] [blame] | 1713 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1714 | otherset = (PySetObject *)make_new_set_basetype(Py_TYPE(so), other); |
| 1715 | if (otherset == NULL) |
| 1716 | return NULL; |
| 1717 | rv = set_symmetric_difference_update(otherset, (PyObject *)so); |
lekma | 491bbed | 2018-05-02 11:29:10 +0200 | [diff] [blame] | 1718 | if (rv == NULL) { |
| 1719 | Py_DECREF(otherset); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1720 | return NULL; |
lekma | 491bbed | 2018-05-02 11:29:10 +0200 | [diff] [blame] | 1721 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1722 | Py_DECREF(rv); |
| 1723 | return (PyObject *)otherset; |
Raymond Hettinger | f5f41bf | 2003-11-24 02:57:33 +0000 | [diff] [blame] | 1724 | } |
| 1725 | |
| 1726 | PyDoc_STRVAR(symmetric_difference_doc, |
| 1727 | "Return the symmetric difference of two sets as a new set.\n\ |
| 1728 | \n\ |
| 1729 | (i.e. all elements that are in exactly one of the sets.)"); |
| 1730 | |
| 1731 | static PyObject * |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1732 | set_xor(PySetObject *so, PyObject *other) |
| 1733 | { |
Brian Curtin | dfc80e3 | 2011-08-10 20:28:54 -0500 | [diff] [blame] | 1734 | if (!PyAnySet_Check(so) || !PyAnySet_Check(other)) |
| 1735 | Py_RETURN_NOTIMPLEMENTED; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1736 | return set_symmetric_difference(so, other); |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1737 | } |
| 1738 | |
| 1739 | static PyObject * |
| 1740 | set_ixor(PySetObject *so, PyObject *other) |
| 1741 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1742 | PyObject *result; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1743 | |
Brian Curtin | dfc80e3 | 2011-08-10 20:28:54 -0500 | [diff] [blame] | 1744 | if (!PyAnySet_Check(other)) |
| 1745 | Py_RETURN_NOTIMPLEMENTED; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1746 | result = set_symmetric_difference_update(so, other); |
| 1747 | if (result == NULL) |
| 1748 | return NULL; |
| 1749 | Py_DECREF(result); |
| 1750 | Py_INCREF(so); |
| 1751 | return (PyObject *)so; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1752 | } |
| 1753 | |
| 1754 | static PyObject * |
| 1755 | set_issubset(PySetObject *so, PyObject *other) |
| 1756 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1757 | setentry *entry; |
| 1758 | Py_ssize_t pos = 0; |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1759 | int rv; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1760 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1761 | if (!PyAnySet_Check(other)) { |
| 1762 | PyObject *tmp, *result; |
| 1763 | tmp = make_new_set(&PySet_Type, other); |
| 1764 | if (tmp == NULL) |
| 1765 | return NULL; |
| 1766 | result = set_issubset(so, tmp); |
| 1767 | Py_DECREF(tmp); |
| 1768 | return result; |
| 1769 | } |
| 1770 | if (PySet_GET_SIZE(so) > PySet_GET_SIZE(other)) |
| 1771 | Py_RETURN_FALSE; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1772 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1773 | while (set_next(so, &pos, &entry)) { |
Raymond Hettinger | 73799b1 | 2015-07-05 16:06:10 -0700 | [diff] [blame] | 1774 | rv = set_contains_entry((PySetObject *)other, entry->key, entry->hash); |
Raymond Hettinger | b322326 | 2015-07-03 23:37:16 -0700 | [diff] [blame] | 1775 | if (rv < 0) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1776 | return NULL; |
| 1777 | if (!rv) |
| 1778 | Py_RETURN_FALSE; |
| 1779 | } |
| 1780 | Py_RETURN_TRUE; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1781 | } |
| 1782 | |
| 1783 | PyDoc_STRVAR(issubset_doc, "Report whether another set contains this set."); |
| 1784 | |
| 1785 | static PyObject * |
| 1786 | set_issuperset(PySetObject *so, PyObject *other) |
| 1787 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1788 | PyObject *tmp, *result; |
Raymond Hettinger | 3fbec70 | 2003-11-21 07:56:36 +0000 | [diff] [blame] | 1789 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1790 | if (!PyAnySet_Check(other)) { |
| 1791 | tmp = make_new_set(&PySet_Type, other); |
| 1792 | if (tmp == NULL) |
| 1793 | return NULL; |
| 1794 | result = set_issuperset(so, tmp); |
| 1795 | Py_DECREF(tmp); |
| 1796 | return result; |
| 1797 | } |
| 1798 | return set_issubset((PySetObject *)other, (PyObject *)so); |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1799 | } |
| 1800 | |
| 1801 | PyDoc_STRVAR(issuperset_doc, "Report whether this set contains another set."); |
| 1802 | |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1803 | static PyObject * |
| 1804 | set_richcompare(PySetObject *v, PyObject *w, int op) |
| 1805 | { |
Serhiy Storchaka | fa494fd | 2015-05-30 17:45:22 +0300 | [diff] [blame] | 1806 | PyObject *r1; |
| 1807 | int r2; |
Raymond Hettinger | 9f1a679 | 2005-07-31 01:16:36 +0000 | [diff] [blame] | 1808 | |
Brian Curtin | dfc80e3 | 2011-08-10 20:28:54 -0500 | [diff] [blame] | 1809 | if(!PyAnySet_Check(w)) |
| 1810 | Py_RETURN_NOTIMPLEMENTED; |
| 1811 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1812 | switch (op) { |
| 1813 | case Py_EQ: |
| 1814 | if (PySet_GET_SIZE(v) != PySet_GET_SIZE(w)) |
| 1815 | Py_RETURN_FALSE; |
| 1816 | if (v->hash != -1 && |
| 1817 | ((PySetObject *)w)->hash != -1 && |
| 1818 | v->hash != ((PySetObject *)w)->hash) |
| 1819 | Py_RETURN_FALSE; |
| 1820 | return set_issubset(v, w); |
| 1821 | case Py_NE: |
| 1822 | r1 = set_richcompare(v, w, Py_EQ); |
| 1823 | if (r1 == NULL) |
| 1824 | return NULL; |
Serhiy Storchaka | fa494fd | 2015-05-30 17:45:22 +0300 | [diff] [blame] | 1825 | r2 = PyObject_IsTrue(r1); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1826 | Py_DECREF(r1); |
Serhiy Storchaka | fa494fd | 2015-05-30 17:45:22 +0300 | [diff] [blame] | 1827 | if (r2 < 0) |
| 1828 | return NULL; |
| 1829 | return PyBool_FromLong(!r2); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1830 | case Py_LE: |
| 1831 | return set_issubset(v, w); |
| 1832 | case Py_GE: |
| 1833 | return set_issuperset(v, w); |
| 1834 | case Py_LT: |
| 1835 | if (PySet_GET_SIZE(v) >= PySet_GET_SIZE(w)) |
| 1836 | Py_RETURN_FALSE; |
| 1837 | return set_issubset(v, w); |
| 1838 | case Py_GT: |
| 1839 | if (PySet_GET_SIZE(v) <= PySet_GET_SIZE(w)) |
| 1840 | Py_RETURN_FALSE; |
| 1841 | return set_issuperset(v, w); |
| 1842 | } |
Brian Curtin | dfc80e3 | 2011-08-10 20:28:54 -0500 | [diff] [blame] | 1843 | Py_RETURN_NOTIMPLEMENTED; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1844 | } |
| 1845 | |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1846 | static PyObject * |
Raymond Hettinger | 06d8cf8 | 2005-07-31 15:36:06 +0000 | [diff] [blame] | 1847 | set_add(PySetObject *so, PyObject *key) |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1848 | { |
Raymond Hettinger | 5af9e13 | 2015-05-13 01:44:36 -0700 | [diff] [blame] | 1849 | if (set_add_key(so, key)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1850 | return NULL; |
| 1851 | Py_RETURN_NONE; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1852 | } |
| 1853 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1854 | PyDoc_STRVAR(add_doc, |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1855 | "Add an element to a set.\n\ |
| 1856 | \n\ |
| 1857 | This has no effect if the element is already present."); |
| 1858 | |
Raymond Hettinger | ce8185e | 2005-08-13 09:28:48 +0000 | [diff] [blame] | 1859 | static int |
| 1860 | set_contains(PySetObject *so, PyObject *key) |
| 1861 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1862 | PyObject *tmpkey; |
| 1863 | int rv; |
Raymond Hettinger | ce8185e | 2005-08-13 09:28:48 +0000 | [diff] [blame] | 1864 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1865 | rv = set_contains_key(so, key); |
Raymond Hettinger | b322326 | 2015-07-03 23:37:16 -0700 | [diff] [blame] | 1866 | if (rv < 0) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1867 | if (!PySet_Check(key) || !PyErr_ExceptionMatches(PyExc_TypeError)) |
| 1868 | return -1; |
| 1869 | PyErr_Clear(); |
Raymond Hettinger | 38bf2cc | 2010-08-06 09:52:17 +0000 | [diff] [blame] | 1870 | tmpkey = make_new_set(&PyFrozenSet_Type, key); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1871 | if (tmpkey == NULL) |
| 1872 | return -1; |
Petri Lehtinen | 5acc27e | 2011-10-30 13:56:41 +0200 | [diff] [blame] | 1873 | rv = set_contains_key(so, tmpkey); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1874 | Py_DECREF(tmpkey); |
| 1875 | } |
| 1876 | return rv; |
Raymond Hettinger | ce8185e | 2005-08-13 09:28:48 +0000 | [diff] [blame] | 1877 | } |
| 1878 | |
| 1879 | static PyObject * |
| 1880 | set_direct_contains(PySetObject *so, PyObject *key) |
| 1881 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1882 | long result; |
Raymond Hettinger | ce8185e | 2005-08-13 09:28:48 +0000 | [diff] [blame] | 1883 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1884 | result = set_contains(so, key); |
Raymond Hettinger | b322326 | 2015-07-03 23:37:16 -0700 | [diff] [blame] | 1885 | if (result < 0) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1886 | return NULL; |
| 1887 | return PyBool_FromLong(result); |
Raymond Hettinger | ce8185e | 2005-08-13 09:28:48 +0000 | [diff] [blame] | 1888 | } |
| 1889 | |
| 1890 | PyDoc_STRVAR(contains_doc, "x.__contains__(y) <==> y in x."); |
| 1891 | |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1892 | static PyObject * |
Raymond Hettinger | 06d8cf8 | 2005-07-31 15:36:06 +0000 | [diff] [blame] | 1893 | set_remove(PySetObject *so, PyObject *key) |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1894 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1895 | PyObject *tmpkey; |
| 1896 | int rv; |
Raymond Hettinger | bfd334a | 2003-11-22 03:55:23 +0000 | [diff] [blame] | 1897 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1898 | rv = set_discard_key(so, key); |
Raymond Hettinger | b322326 | 2015-07-03 23:37:16 -0700 | [diff] [blame] | 1899 | if (rv < 0) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1900 | if (!PySet_Check(key) || !PyErr_ExceptionMatches(PyExc_TypeError)) |
| 1901 | return NULL; |
| 1902 | PyErr_Clear(); |
Raymond Hettinger | 38bf2cc | 2010-08-06 09:52:17 +0000 | [diff] [blame] | 1903 | tmpkey = make_new_set(&PyFrozenSet_Type, key); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1904 | if (tmpkey == NULL) |
| 1905 | return NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1906 | rv = set_discard_key(so, tmpkey); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1907 | Py_DECREF(tmpkey); |
Raymond Hettinger | b322326 | 2015-07-03 23:37:16 -0700 | [diff] [blame] | 1908 | if (rv < 0) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1909 | return NULL; |
| 1910 | } |
Benjamin Peterson | f10a79a | 2008-10-11 00:49:57 +0000 | [diff] [blame] | 1911 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1912 | if (rv == DISCARD_NOTFOUND) { |
Raymond Hettinger | 69492da | 2013-09-02 15:59:26 -0700 | [diff] [blame] | 1913 | _PyErr_SetKeyError(key); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1914 | return NULL; |
| 1915 | } |
| 1916 | Py_RETURN_NONE; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1917 | } |
| 1918 | |
| 1919 | PyDoc_STRVAR(remove_doc, |
| 1920 | "Remove an element from a set; it must be a member.\n\ |
| 1921 | \n\ |
| 1922 | If the element is not a member, raise a KeyError."); |
| 1923 | |
| 1924 | static PyObject * |
Raymond Hettinger | 06d8cf8 | 2005-07-31 15:36:06 +0000 | [diff] [blame] | 1925 | set_discard(PySetObject *so, PyObject *key) |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1926 | { |
Benjamin Peterson | 2b50a01 | 2011-10-30 14:24:44 -0400 | [diff] [blame] | 1927 | PyObject *tmpkey; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1928 | int rv; |
Raymond Hettinger | 0deab62 | 2003-12-13 18:53:18 +0000 | [diff] [blame] | 1929 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1930 | rv = set_discard_key(so, key); |
Raymond Hettinger | b322326 | 2015-07-03 23:37:16 -0700 | [diff] [blame] | 1931 | if (rv < 0) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1932 | if (!PySet_Check(key) || !PyErr_ExceptionMatches(PyExc_TypeError)) |
| 1933 | return NULL; |
| 1934 | PyErr_Clear(); |
Raymond Hettinger | 38bf2cc | 2010-08-06 09:52:17 +0000 | [diff] [blame] | 1935 | tmpkey = make_new_set(&PyFrozenSet_Type, key); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1936 | if (tmpkey == NULL) |
| 1937 | return NULL; |
Petri Lehtinen | e0aa803 | 2011-10-30 14:31:27 +0200 | [diff] [blame] | 1938 | rv = set_discard_key(so, tmpkey); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1939 | Py_DECREF(tmpkey); |
Raymond Hettinger | b322326 | 2015-07-03 23:37:16 -0700 | [diff] [blame] | 1940 | if (rv < 0) |
Petri Lehtinen | e0aa803 | 2011-10-30 14:31:27 +0200 | [diff] [blame] | 1941 | return NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1942 | } |
| 1943 | Py_RETURN_NONE; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1944 | } |
| 1945 | |
| 1946 | PyDoc_STRVAR(discard_doc, |
| 1947 | "Remove an element from a set if it is a member.\n\ |
| 1948 | \n\ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1949 | If the element is not a member, do nothing."); |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1950 | |
| 1951 | static PyObject * |
Siddhesh Poyarekar | 55edd0c | 2018-04-30 00:29:33 +0530 | [diff] [blame] | 1952 | set_reduce(PySetObject *so, PyObject *Py_UNUSED(ignored)) |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1953 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1954 | PyObject *keys=NULL, *args=NULL, *result=NULL, *dict=NULL; |
Martin v. Löwis | bd928fe | 2011-10-14 10:20:37 +0200 | [diff] [blame] | 1955 | _Py_IDENTIFIER(__dict__); |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1956 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1957 | keys = PySequence_List((PyObject *)so); |
| 1958 | if (keys == NULL) |
| 1959 | goto done; |
| 1960 | args = PyTuple_Pack(1, keys); |
| 1961 | if (args == NULL) |
| 1962 | goto done; |
Martin v. Löwis | 1ee1b6f | 2011-10-10 18:11:30 +0200 | [diff] [blame] | 1963 | dict = _PyObject_GetAttrId((PyObject *)so, &PyId___dict__); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1964 | if (dict == NULL) { |
| 1965 | PyErr_Clear(); |
| 1966 | dict = Py_None; |
| 1967 | Py_INCREF(dict); |
| 1968 | } |
| 1969 | result = PyTuple_Pack(3, Py_TYPE(so), args, dict); |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1970 | done: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1971 | Py_XDECREF(args); |
| 1972 | Py_XDECREF(keys); |
| 1973 | Py_XDECREF(dict); |
| 1974 | return result; |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 1975 | } |
| 1976 | |
Robert Schuppenies | fbe94c5 | 2008-07-14 10:13:31 +0000 | [diff] [blame] | 1977 | static PyObject * |
Siddhesh Poyarekar | 55edd0c | 2018-04-30 00:29:33 +0530 | [diff] [blame] | 1978 | set_sizeof(PySetObject *so, PyObject *Py_UNUSED(ignored)) |
Robert Schuppenies | fbe94c5 | 2008-07-14 10:13:31 +0000 | [diff] [blame] | 1979 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1980 | Py_ssize_t res; |
Robert Schuppenies | fbe94c5 | 2008-07-14 10:13:31 +0000 | [diff] [blame] | 1981 | |
Serhiy Storchaka | 5c4064e | 2015-12-19 20:05:25 +0200 | [diff] [blame] | 1982 | res = _PyObject_SIZE(Py_TYPE(so)); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1983 | if (so->table != so->smalltable) |
| 1984 | res = res + (so->mask + 1) * sizeof(setentry); |
| 1985 | return PyLong_FromSsize_t(res); |
Robert Schuppenies | fbe94c5 | 2008-07-14 10:13:31 +0000 | [diff] [blame] | 1986 | } |
| 1987 | |
| 1988 | PyDoc_STRVAR(sizeof_doc, "S.__sizeof__() -> size of S in memory, in bytes"); |
Raymond Hettinger | 50a4bb3 | 2003-11-17 16:42:33 +0000 | [diff] [blame] | 1989 | static int |
| 1990 | set_init(PySetObject *self, PyObject *args, PyObject *kwds) |
| 1991 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1992 | PyObject *iterable = NULL; |
Raymond Hettinger | 50a4bb3 | 2003-11-17 16:42:33 +0000 | [diff] [blame] | 1993 | |
Serhiy Storchaka | 6cca5c8 | 2017-06-08 14:41:19 +0300 | [diff] [blame] | 1994 | if (!_PyArg_NoKeywords("set", kwds)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1995 | return -1; |
| 1996 | if (!PyArg_UnpackTuple(args, Py_TYPE(self)->tp_name, 0, 1, &iterable)) |
| 1997 | return -1; |
Raymond Hettinger | b72e21b | 2016-03-25 02:29:59 -0700 | [diff] [blame] | 1998 | if (self->fill) |
| 1999 | set_clear_internal(self); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2000 | self->hash = -1; |
| 2001 | if (iterable == NULL) |
| 2002 | return 0; |
| 2003 | return set_update_internal(self, iterable); |
Raymond Hettinger | 50a4bb3 | 2003-11-17 16:42:33 +0000 | [diff] [blame] | 2004 | } |
| 2005 | |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 2006 | static PySequenceMethods set_as_sequence = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2007 | set_len, /* sq_length */ |
| 2008 | 0, /* sq_concat */ |
| 2009 | 0, /* sq_repeat */ |
| 2010 | 0, /* sq_item */ |
| 2011 | 0, /* sq_slice */ |
| 2012 | 0, /* sq_ass_item */ |
| 2013 | 0, /* sq_ass_slice */ |
| 2014 | (objobjproc)set_contains, /* sq_contains */ |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 2015 | }; |
| 2016 | |
| 2017 | /* set object ********************************************************/ |
| 2018 | |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2019 | #ifdef Py_DEBUG |
Siddhesh Poyarekar | 55edd0c | 2018-04-30 00:29:33 +0530 | [diff] [blame] | 2020 | static PyObject *test_c_api(PySetObject *so, PyObject *Py_UNUSED(ignored)); |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2021 | |
| 2022 | PyDoc_STRVAR(test_c_api_doc, "Exercises C API. Returns True.\n\ |
| 2023 | All is well if assertions don't fail."); |
| 2024 | #endif |
| 2025 | |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 2026 | static PyMethodDef set_methods[] = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2027 | {"add", (PyCFunction)set_add, METH_O, |
| 2028 | add_doc}, |
| 2029 | {"clear", (PyCFunction)set_clear, METH_NOARGS, |
| 2030 | clear_doc}, |
| 2031 | {"__contains__",(PyCFunction)set_direct_contains, METH_O | METH_COEXIST, |
| 2032 | contains_doc}, |
| 2033 | {"copy", (PyCFunction)set_copy, METH_NOARGS, |
| 2034 | copy_doc}, |
| 2035 | {"discard", (PyCFunction)set_discard, METH_O, |
| 2036 | discard_doc}, |
| 2037 | {"difference", (PyCFunction)set_difference_multi, METH_VARARGS, |
| 2038 | difference_doc}, |
| 2039 | {"difference_update", (PyCFunction)set_difference_update, METH_VARARGS, |
| 2040 | difference_update_doc}, |
| 2041 | {"intersection",(PyCFunction)set_intersection_multi, METH_VARARGS, |
| 2042 | intersection_doc}, |
| 2043 | {"intersection_update",(PyCFunction)set_intersection_update_multi, METH_VARARGS, |
| 2044 | intersection_update_doc}, |
| 2045 | {"isdisjoint", (PyCFunction)set_isdisjoint, METH_O, |
| 2046 | isdisjoint_doc}, |
| 2047 | {"issubset", (PyCFunction)set_issubset, METH_O, |
| 2048 | issubset_doc}, |
| 2049 | {"issuperset", (PyCFunction)set_issuperset, METH_O, |
| 2050 | issuperset_doc}, |
| 2051 | {"pop", (PyCFunction)set_pop, METH_NOARGS, |
| 2052 | pop_doc}, |
| 2053 | {"__reduce__", (PyCFunction)set_reduce, METH_NOARGS, |
| 2054 | reduce_doc}, |
| 2055 | {"remove", (PyCFunction)set_remove, METH_O, |
| 2056 | remove_doc}, |
| 2057 | {"__sizeof__", (PyCFunction)set_sizeof, METH_NOARGS, |
| 2058 | sizeof_doc}, |
| 2059 | {"symmetric_difference",(PyCFunction)set_symmetric_difference, METH_O, |
| 2060 | symmetric_difference_doc}, |
| 2061 | {"symmetric_difference_update",(PyCFunction)set_symmetric_difference_update, METH_O, |
| 2062 | symmetric_difference_update_doc}, |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2063 | #ifdef Py_DEBUG |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2064 | {"test_c_api", (PyCFunction)test_c_api, METH_NOARGS, |
| 2065 | test_c_api_doc}, |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2066 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2067 | {"union", (PyCFunction)set_union, METH_VARARGS, |
| 2068 | union_doc}, |
| 2069 | {"update", (PyCFunction)set_update, METH_VARARGS, |
| 2070 | update_doc}, |
| 2071 | {NULL, NULL} /* sentinel */ |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 2072 | }; |
| 2073 | |
| 2074 | static PyNumberMethods set_as_number = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2075 | 0, /*nb_add*/ |
| 2076 | (binaryfunc)set_sub, /*nb_subtract*/ |
| 2077 | 0, /*nb_multiply*/ |
| 2078 | 0, /*nb_remainder*/ |
| 2079 | 0, /*nb_divmod*/ |
| 2080 | 0, /*nb_power*/ |
| 2081 | 0, /*nb_negative*/ |
| 2082 | 0, /*nb_positive*/ |
| 2083 | 0, /*nb_absolute*/ |
| 2084 | 0, /*nb_bool*/ |
| 2085 | 0, /*nb_invert*/ |
| 2086 | 0, /*nb_lshift*/ |
| 2087 | 0, /*nb_rshift*/ |
| 2088 | (binaryfunc)set_and, /*nb_and*/ |
| 2089 | (binaryfunc)set_xor, /*nb_xor*/ |
| 2090 | (binaryfunc)set_or, /*nb_or*/ |
| 2091 | 0, /*nb_int*/ |
| 2092 | 0, /*nb_reserved*/ |
| 2093 | 0, /*nb_float*/ |
| 2094 | 0, /*nb_inplace_add*/ |
| 2095 | (binaryfunc)set_isub, /*nb_inplace_subtract*/ |
| 2096 | 0, /*nb_inplace_multiply*/ |
| 2097 | 0, /*nb_inplace_remainder*/ |
| 2098 | 0, /*nb_inplace_power*/ |
| 2099 | 0, /*nb_inplace_lshift*/ |
| 2100 | 0, /*nb_inplace_rshift*/ |
| 2101 | (binaryfunc)set_iand, /*nb_inplace_and*/ |
| 2102 | (binaryfunc)set_ixor, /*nb_inplace_xor*/ |
| 2103 | (binaryfunc)set_ior, /*nb_inplace_or*/ |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 2104 | }; |
| 2105 | |
| 2106 | PyDoc_STRVAR(set_doc, |
Ezio Melotti | 7f807b7 | 2010-03-01 04:08:34 +0000 | [diff] [blame] | 2107 | "set() -> new empty set object\n\ |
| 2108 | set(iterable) -> new set object\n\ |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 2109 | \n\ |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 2110 | Build an unordered collection of unique elements."); |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 2111 | |
| 2112 | PyTypeObject PySet_Type = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2113 | PyVarObject_HEAD_INIT(&PyType_Type, 0) |
| 2114 | "set", /* tp_name */ |
| 2115 | sizeof(PySetObject), /* tp_basicsize */ |
| 2116 | 0, /* tp_itemsize */ |
| 2117 | /* methods */ |
| 2118 | (destructor)set_dealloc, /* tp_dealloc */ |
| 2119 | 0, /* tp_print */ |
| 2120 | 0, /* tp_getattr */ |
| 2121 | 0, /* tp_setattr */ |
| 2122 | 0, /* tp_reserved */ |
| 2123 | (reprfunc)set_repr, /* tp_repr */ |
| 2124 | &set_as_number, /* tp_as_number */ |
| 2125 | &set_as_sequence, /* tp_as_sequence */ |
| 2126 | 0, /* tp_as_mapping */ |
Georg Brandl | 00da4e0 | 2010-10-18 07:32:48 +0000 | [diff] [blame] | 2127 | PyObject_HashNotImplemented, /* tp_hash */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2128 | 0, /* tp_call */ |
| 2129 | 0, /* tp_str */ |
| 2130 | PyObject_GenericGetAttr, /* tp_getattro */ |
| 2131 | 0, /* tp_setattro */ |
| 2132 | 0, /* tp_as_buffer */ |
| 2133 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC | |
| 2134 | Py_TPFLAGS_BASETYPE, /* tp_flags */ |
| 2135 | set_doc, /* tp_doc */ |
| 2136 | (traverseproc)set_traverse, /* tp_traverse */ |
| 2137 | (inquiry)set_clear_internal, /* tp_clear */ |
| 2138 | (richcmpfunc)set_richcompare, /* tp_richcompare */ |
Georg Brandl | 00da4e0 | 2010-10-18 07:32:48 +0000 | [diff] [blame] | 2139 | offsetof(PySetObject, weakreflist), /* tp_weaklistoffset */ |
| 2140 | (getiterfunc)set_iter, /* tp_iter */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2141 | 0, /* tp_iternext */ |
| 2142 | set_methods, /* tp_methods */ |
| 2143 | 0, /* tp_members */ |
| 2144 | 0, /* tp_getset */ |
| 2145 | 0, /* tp_base */ |
| 2146 | 0, /* tp_dict */ |
| 2147 | 0, /* tp_descr_get */ |
| 2148 | 0, /* tp_descr_set */ |
| 2149 | 0, /* tp_dictoffset */ |
| 2150 | (initproc)set_init, /* tp_init */ |
| 2151 | PyType_GenericAlloc, /* tp_alloc */ |
| 2152 | set_new, /* tp_new */ |
| 2153 | PyObject_GC_Del, /* tp_free */ |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 2154 | }; |
| 2155 | |
| 2156 | /* frozenset object ********************************************************/ |
| 2157 | |
| 2158 | |
| 2159 | static PyMethodDef frozenset_methods[] = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2160 | {"__contains__",(PyCFunction)set_direct_contains, METH_O | METH_COEXIST, |
| 2161 | contains_doc}, |
| 2162 | {"copy", (PyCFunction)frozenset_copy, METH_NOARGS, |
| 2163 | copy_doc}, |
| 2164 | {"difference", (PyCFunction)set_difference_multi, METH_VARARGS, |
| 2165 | difference_doc}, |
Raymond Hettinger | 5d2385f | 2015-07-08 11:52:27 -0700 | [diff] [blame] | 2166 | {"intersection", (PyCFunction)set_intersection_multi, METH_VARARGS, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2167 | intersection_doc}, |
| 2168 | {"isdisjoint", (PyCFunction)set_isdisjoint, METH_O, |
| 2169 | isdisjoint_doc}, |
| 2170 | {"issubset", (PyCFunction)set_issubset, METH_O, |
| 2171 | issubset_doc}, |
| 2172 | {"issuperset", (PyCFunction)set_issuperset, METH_O, |
| 2173 | issuperset_doc}, |
| 2174 | {"__reduce__", (PyCFunction)set_reduce, METH_NOARGS, |
| 2175 | reduce_doc}, |
| 2176 | {"__sizeof__", (PyCFunction)set_sizeof, METH_NOARGS, |
| 2177 | sizeof_doc}, |
| 2178 | {"symmetric_difference",(PyCFunction)set_symmetric_difference, METH_O, |
| 2179 | symmetric_difference_doc}, |
| 2180 | {"union", (PyCFunction)set_union, METH_VARARGS, |
| 2181 | union_doc}, |
| 2182 | {NULL, NULL} /* sentinel */ |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 2183 | }; |
| 2184 | |
| 2185 | static PyNumberMethods frozenset_as_number = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2186 | 0, /*nb_add*/ |
| 2187 | (binaryfunc)set_sub, /*nb_subtract*/ |
| 2188 | 0, /*nb_multiply*/ |
| 2189 | 0, /*nb_remainder*/ |
| 2190 | 0, /*nb_divmod*/ |
| 2191 | 0, /*nb_power*/ |
| 2192 | 0, /*nb_negative*/ |
| 2193 | 0, /*nb_positive*/ |
| 2194 | 0, /*nb_absolute*/ |
| 2195 | 0, /*nb_bool*/ |
| 2196 | 0, /*nb_invert*/ |
| 2197 | 0, /*nb_lshift*/ |
| 2198 | 0, /*nb_rshift*/ |
| 2199 | (binaryfunc)set_and, /*nb_and*/ |
| 2200 | (binaryfunc)set_xor, /*nb_xor*/ |
| 2201 | (binaryfunc)set_or, /*nb_or*/ |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 2202 | }; |
| 2203 | |
| 2204 | PyDoc_STRVAR(frozenset_doc, |
Ezio Melotti | 7f807b7 | 2010-03-01 04:08:34 +0000 | [diff] [blame] | 2205 | "frozenset() -> empty frozenset object\n\ |
| 2206 | frozenset(iterable) -> frozenset object\n\ |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 2207 | \n\ |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 2208 | Build an immutable unordered collection of unique elements."); |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 2209 | |
| 2210 | PyTypeObject PyFrozenSet_Type = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2211 | PyVarObject_HEAD_INIT(&PyType_Type, 0) |
| 2212 | "frozenset", /* tp_name */ |
| 2213 | sizeof(PySetObject), /* tp_basicsize */ |
| 2214 | 0, /* tp_itemsize */ |
| 2215 | /* methods */ |
| 2216 | (destructor)set_dealloc, /* tp_dealloc */ |
| 2217 | 0, /* tp_print */ |
| 2218 | 0, /* tp_getattr */ |
| 2219 | 0, /* tp_setattr */ |
| 2220 | 0, /* tp_reserved */ |
| 2221 | (reprfunc)set_repr, /* tp_repr */ |
| 2222 | &frozenset_as_number, /* tp_as_number */ |
| 2223 | &set_as_sequence, /* tp_as_sequence */ |
| 2224 | 0, /* tp_as_mapping */ |
| 2225 | frozenset_hash, /* tp_hash */ |
| 2226 | 0, /* tp_call */ |
| 2227 | 0, /* tp_str */ |
| 2228 | PyObject_GenericGetAttr, /* tp_getattro */ |
| 2229 | 0, /* tp_setattro */ |
| 2230 | 0, /* tp_as_buffer */ |
| 2231 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC | |
| 2232 | Py_TPFLAGS_BASETYPE, /* tp_flags */ |
| 2233 | frozenset_doc, /* tp_doc */ |
| 2234 | (traverseproc)set_traverse, /* tp_traverse */ |
| 2235 | (inquiry)set_clear_internal, /* tp_clear */ |
| 2236 | (richcmpfunc)set_richcompare, /* tp_richcompare */ |
Raymond Hettinger | 5d2385f | 2015-07-08 11:52:27 -0700 | [diff] [blame] | 2237 | offsetof(PySetObject, weakreflist), /* tp_weaklistoffset */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2238 | (getiterfunc)set_iter, /* tp_iter */ |
| 2239 | 0, /* tp_iternext */ |
| 2240 | frozenset_methods, /* tp_methods */ |
| 2241 | 0, /* tp_members */ |
| 2242 | 0, /* tp_getset */ |
| 2243 | 0, /* tp_base */ |
| 2244 | 0, /* tp_dict */ |
| 2245 | 0, /* tp_descr_get */ |
| 2246 | 0, /* tp_descr_set */ |
| 2247 | 0, /* tp_dictoffset */ |
| 2248 | 0, /* tp_init */ |
| 2249 | PyType_GenericAlloc, /* tp_alloc */ |
| 2250 | frozenset_new, /* tp_new */ |
| 2251 | PyObject_GC_Del, /* tp_free */ |
Raymond Hettinger | a690a99 | 2003-11-16 16:17:49 +0000 | [diff] [blame] | 2252 | }; |
Raymond Hettinger | beb3101 | 2005-08-16 03:47:52 +0000 | [diff] [blame] | 2253 | |
| 2254 | |
| 2255 | /***** C API functions *************************************************/ |
| 2256 | |
| 2257 | PyObject * |
| 2258 | PySet_New(PyObject *iterable) |
| 2259 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2260 | return make_new_set(&PySet_Type, iterable); |
Raymond Hettinger | beb3101 | 2005-08-16 03:47:52 +0000 | [diff] [blame] | 2261 | } |
| 2262 | |
| 2263 | PyObject * |
| 2264 | PyFrozenSet_New(PyObject *iterable) |
| 2265 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2266 | return make_new_set(&PyFrozenSet_Type, iterable); |
Raymond Hettinger | beb3101 | 2005-08-16 03:47:52 +0000 | [diff] [blame] | 2267 | } |
| 2268 | |
Neal Norwitz | 8c49c82 | 2006-03-04 18:41:19 +0000 | [diff] [blame] | 2269 | Py_ssize_t |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2270 | PySet_Size(PyObject *anyset) |
| 2271 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2272 | if (!PyAnySet_Check(anyset)) { |
| 2273 | PyErr_BadInternalCall(); |
| 2274 | return -1; |
| 2275 | } |
| 2276 | return PySet_GET_SIZE(anyset); |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2277 | } |
| 2278 | |
| 2279 | int |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2280 | PySet_Clear(PyObject *set) |
| 2281 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2282 | if (!PySet_Check(set)) { |
| 2283 | PyErr_BadInternalCall(); |
| 2284 | return -1; |
| 2285 | } |
| 2286 | return set_clear_internal((PySetObject *)set); |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2287 | } |
| 2288 | |
| 2289 | int |
Raymond Hettinger | beb3101 | 2005-08-16 03:47:52 +0000 | [diff] [blame] | 2290 | PySet_Contains(PyObject *anyset, PyObject *key) |
| 2291 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2292 | if (!PyAnySet_Check(anyset)) { |
| 2293 | PyErr_BadInternalCall(); |
| 2294 | return -1; |
| 2295 | } |
| 2296 | return set_contains_key((PySetObject *)anyset, key); |
Raymond Hettinger | beb3101 | 2005-08-16 03:47:52 +0000 | [diff] [blame] | 2297 | } |
| 2298 | |
| 2299 | int |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2300 | PySet_Discard(PyObject *set, PyObject *key) |
Raymond Hettinger | beb3101 | 2005-08-16 03:47:52 +0000 | [diff] [blame] | 2301 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2302 | if (!PySet_Check(set)) { |
| 2303 | PyErr_BadInternalCall(); |
| 2304 | return -1; |
| 2305 | } |
| 2306 | return set_discard_key((PySetObject *)set, key); |
Raymond Hettinger | beb3101 | 2005-08-16 03:47:52 +0000 | [diff] [blame] | 2307 | } |
| 2308 | |
| 2309 | int |
Christian Heimes | fd66e51 | 2008-01-29 12:18:50 +0000 | [diff] [blame] | 2310 | PySet_Add(PyObject *anyset, PyObject *key) |
Raymond Hettinger | beb3101 | 2005-08-16 03:47:52 +0000 | [diff] [blame] | 2311 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2312 | if (!PySet_Check(anyset) && |
| 2313 | (!PyFrozenSet_Check(anyset) || Py_REFCNT(anyset) != 1)) { |
| 2314 | PyErr_BadInternalCall(); |
| 2315 | return -1; |
| 2316 | } |
| 2317 | return set_add_key((PySetObject *)anyset, key); |
Raymond Hettinger | beb3101 | 2005-08-16 03:47:52 +0000 | [diff] [blame] | 2318 | } |
| 2319 | |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2320 | int |
Raymond Hettinger | 3625af5 | 2016-03-27 01:15:07 -0700 | [diff] [blame] | 2321 | PySet_ClearFreeList(void) |
| 2322 | { |
| 2323 | return 0; |
| 2324 | } |
| 2325 | |
| 2326 | void |
| 2327 | PySet_Fini(void) |
| 2328 | { |
| 2329 | Py_CLEAR(emptyfrozenset); |
| 2330 | } |
| 2331 | |
| 2332 | int |
Benjamin Peterson | 8f67d08 | 2010-10-17 20:54:53 +0000 | [diff] [blame] | 2333 | _PySet_NextEntry(PyObject *set, Py_ssize_t *pos, PyObject **key, Py_hash_t *hash) |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 2334 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2335 | setentry *entry; |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 2336 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2337 | if (!PyAnySet_Check(set)) { |
| 2338 | PyErr_BadInternalCall(); |
| 2339 | return -1; |
| 2340 | } |
| 2341 | if (set_next((PySetObject *)set, pos, &entry) == 0) |
| 2342 | return 0; |
| 2343 | *key = entry->key; |
Benjamin Peterson | 8f67d08 | 2010-10-17 20:54:53 +0000 | [diff] [blame] | 2344 | *hash = entry->hash; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2345 | return 1; |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2346 | } |
| 2347 | |
Raymond Hettinger | beb3101 | 2005-08-16 03:47:52 +0000 | [diff] [blame] | 2348 | PyObject * |
| 2349 | PySet_Pop(PyObject *set) |
| 2350 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2351 | if (!PySet_Check(set)) { |
| 2352 | PyErr_BadInternalCall(); |
| 2353 | return NULL; |
| 2354 | } |
Siddhesh Poyarekar | 55edd0c | 2018-04-30 00:29:33 +0530 | [diff] [blame] | 2355 | return set_pop((PySetObject *)set, NULL); |
Raymond Hettinger | beb3101 | 2005-08-16 03:47:52 +0000 | [diff] [blame] | 2356 | } |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2357 | |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2358 | int |
| 2359 | _PySet_Update(PyObject *set, PyObject *iterable) |
| 2360 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2361 | if (!PySet_Check(set)) { |
| 2362 | PyErr_BadInternalCall(); |
| 2363 | return -1; |
| 2364 | } |
| 2365 | return set_update_internal((PySetObject *)set, iterable); |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2366 | } |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2367 | |
Raymond Hettinger | e259f13 | 2013-12-15 11:56:14 -0800 | [diff] [blame] | 2368 | /* Exported for the gdb plugin's benefit. */ |
| 2369 | PyObject *_PySet_Dummy = dummy; |
| 2370 | |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2371 | #ifdef Py_DEBUG |
| 2372 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2373 | /* Test code to be called with any three element set. |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2374 | Returns True and original set is restored. */ |
| 2375 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2376 | #define assertRaises(call_return_value, exception) \ |
| 2377 | do { \ |
| 2378 | assert(call_return_value); \ |
| 2379 | assert(PyErr_ExceptionMatches(exception)); \ |
| 2380 | PyErr_Clear(); \ |
| 2381 | } while(0) |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2382 | |
| 2383 | static PyObject * |
Siddhesh Poyarekar | 55edd0c | 2018-04-30 00:29:33 +0530 | [diff] [blame] | 2384 | test_c_api(PySetObject *so, PyObject *Py_UNUSED(ignored)) |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2385 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2386 | Py_ssize_t count; |
Serhiy Storchaka | 85b0f5b | 2016-11-20 10:16:47 +0200 | [diff] [blame] | 2387 | const char *s; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2388 | Py_ssize_t i; |
Raymond Hettinger | 583cd03 | 2013-09-07 22:06:35 -0700 | [diff] [blame] | 2389 | PyObject *elem=NULL, *dup=NULL, *t, *f, *dup2, *x=NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2390 | PyObject *ob = (PyObject *)so; |
Benjamin Peterson | 8f67d08 | 2010-10-17 20:54:53 +0000 | [diff] [blame] | 2391 | Py_hash_t hash; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2392 | PyObject *str; |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2393 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2394 | /* Verify preconditions */ |
| 2395 | assert(PyAnySet_Check(ob)); |
| 2396 | assert(PyAnySet_CheckExact(ob)); |
| 2397 | assert(!PyFrozenSet_CheckExact(ob)); |
Victor Stinner | 08b36bd | 2010-03-13 00:19:17 +0000 | [diff] [blame] | 2398 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2399 | /* so.clear(); so |= set("abc"); */ |
| 2400 | str = PyUnicode_FromString("abc"); |
| 2401 | if (str == NULL) |
| 2402 | return NULL; |
| 2403 | set_clear_internal(so); |
Raymond Hettinger | 5af9e13 | 2015-05-13 01:44:36 -0700 | [diff] [blame] | 2404 | if (set_update_internal(so, str)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2405 | Py_DECREF(str); |
| 2406 | return NULL; |
| 2407 | } |
| 2408 | Py_DECREF(str); |
Victor Stinner | 08b36bd | 2010-03-13 00:19:17 +0000 | [diff] [blame] | 2409 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2410 | /* Exercise type/size checks */ |
| 2411 | assert(PySet_Size(ob) == 3); |
| 2412 | assert(PySet_GET_SIZE(ob) == 3); |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2413 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2414 | /* Raise TypeError for non-iterable constructor arguments */ |
| 2415 | assertRaises(PySet_New(Py_None) == NULL, PyExc_TypeError); |
| 2416 | assertRaises(PyFrozenSet_New(Py_None) == NULL, PyExc_TypeError); |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2417 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2418 | /* Raise TypeError for unhashable key */ |
| 2419 | dup = PySet_New(ob); |
| 2420 | assertRaises(PySet_Discard(ob, dup) == -1, PyExc_TypeError); |
| 2421 | assertRaises(PySet_Contains(ob, dup) == -1, PyExc_TypeError); |
| 2422 | assertRaises(PySet_Add(ob, dup) == -1, PyExc_TypeError); |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2423 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2424 | /* Exercise successful pop, contains, add, and discard */ |
| 2425 | elem = PySet_Pop(ob); |
| 2426 | assert(PySet_Contains(ob, elem) == 0); |
| 2427 | assert(PySet_GET_SIZE(ob) == 2); |
| 2428 | assert(PySet_Add(ob, elem) == 0); |
| 2429 | assert(PySet_Contains(ob, elem) == 1); |
| 2430 | assert(PySet_GET_SIZE(ob) == 3); |
| 2431 | assert(PySet_Discard(ob, elem) == 1); |
| 2432 | assert(PySet_GET_SIZE(ob) == 2); |
| 2433 | assert(PySet_Discard(ob, elem) == 0); |
| 2434 | assert(PySet_GET_SIZE(ob) == 2); |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2435 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2436 | /* Exercise clear */ |
| 2437 | dup2 = PySet_New(dup); |
| 2438 | assert(PySet_Clear(dup2) == 0); |
| 2439 | assert(PySet_Size(dup2) == 0); |
| 2440 | Py_DECREF(dup2); |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2441 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2442 | /* Raise SystemError on clear or update of frozen set */ |
| 2443 | f = PyFrozenSet_New(dup); |
| 2444 | assertRaises(PySet_Clear(f) == -1, PyExc_SystemError); |
| 2445 | assertRaises(_PySet_Update(f, dup) == -1, PyExc_SystemError); |
| 2446 | assert(PySet_Add(f, elem) == 0); |
| 2447 | Py_INCREF(f); |
| 2448 | assertRaises(PySet_Add(f, elem) == -1, PyExc_SystemError); |
| 2449 | Py_DECREF(f); |
| 2450 | Py_DECREF(f); |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2451 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2452 | /* Exercise direct iteration */ |
| 2453 | i = 0, count = 0; |
| 2454 | while (_PySet_NextEntry((PyObject *)dup, &i, &x, &hash)) { |
Serhiy Storchaka | 0651583 | 2016-11-20 09:13:07 +0200 | [diff] [blame] | 2455 | s = PyUnicode_AsUTF8(x); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2456 | assert(s && (s[0] == 'a' || s[0] == 'b' || s[0] == 'c')); |
| 2457 | count++; |
| 2458 | } |
| 2459 | assert(count == 3); |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2460 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2461 | /* Exercise updates */ |
| 2462 | dup2 = PySet_New(NULL); |
| 2463 | assert(_PySet_Update(dup2, dup) == 0); |
| 2464 | assert(PySet_Size(dup2) == 3); |
| 2465 | assert(_PySet_Update(dup2, dup) == 0); |
| 2466 | assert(PySet_Size(dup2) == 3); |
| 2467 | Py_DECREF(dup2); |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2468 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2469 | /* Raise SystemError when self argument is not a set or frozenset. */ |
| 2470 | t = PyTuple_New(0); |
| 2471 | assertRaises(PySet_Size(t) == -1, PyExc_SystemError); |
| 2472 | assertRaises(PySet_Contains(t, elem) == -1, PyExc_SystemError); |
| 2473 | Py_DECREF(t); |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2474 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2475 | /* Raise SystemError when self argument is not a set. */ |
| 2476 | f = PyFrozenSet_New(dup); |
| 2477 | assert(PySet_Size(f) == 3); |
| 2478 | assert(PyFrozenSet_CheckExact(f)); |
| 2479 | assertRaises(PySet_Discard(f, elem) == -1, PyExc_SystemError); |
| 2480 | assertRaises(PySet_Pop(f) == NULL, PyExc_SystemError); |
| 2481 | Py_DECREF(f); |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2482 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2483 | /* Raise KeyError when popping from an empty set */ |
| 2484 | assert(PyNumber_InPlaceSubtract(ob, ob) == ob); |
| 2485 | Py_DECREF(ob); |
| 2486 | assert(PySet_GET_SIZE(ob) == 0); |
| 2487 | assertRaises(PySet_Pop(ob) == NULL, PyExc_KeyError); |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2488 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2489 | /* Restore the set from the copy using the PyNumber API */ |
| 2490 | assert(PyNumber_InPlaceOr(ob, dup) == ob); |
| 2491 | Py_DECREF(ob); |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2492 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2493 | /* Verify constructors accept NULL arguments */ |
| 2494 | f = PySet_New(NULL); |
| 2495 | assert(f != NULL); |
| 2496 | assert(PySet_GET_SIZE(f) == 0); |
| 2497 | Py_DECREF(f); |
| 2498 | f = PyFrozenSet_New(NULL); |
| 2499 | assert(f != NULL); |
| 2500 | assert(PyFrozenSet_CheckExact(f)); |
| 2501 | assert(PySet_GET_SIZE(f) == 0); |
| 2502 | Py_DECREF(f); |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2503 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2504 | Py_DECREF(elem); |
| 2505 | Py_DECREF(dup); |
| 2506 | Py_RETURN_TRUE; |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2507 | } |
| 2508 | |
Raymond Hettinger | 9bda1d6 | 2005-09-16 07:14:21 +0000 | [diff] [blame] | 2509 | #undef assertRaises |
| 2510 | |
Raymond Hettinger | c47e01d | 2005-08-16 10:44:15 +0000 | [diff] [blame] | 2511 | #endif |
Raymond Hettinger | bfc1e1a | 2013-08-23 03:22:15 -0500 | [diff] [blame] | 2512 | |
| 2513 | /***** Dummy Struct *************************************************/ |
| 2514 | |
| 2515 | static PyObject * |
| 2516 | dummy_repr(PyObject *op) |
| 2517 | { |
| 2518 | return PyUnicode_FromString("<dummy key>"); |
| 2519 | } |
| 2520 | |
| 2521 | static void |
| 2522 | dummy_dealloc(PyObject* ignore) |
| 2523 | { |
| 2524 | Py_FatalError("deallocating <dummy key>"); |
| 2525 | } |
| 2526 | |
| 2527 | static PyTypeObject _PySetDummy_Type = { |
| 2528 | PyVarObject_HEAD_INIT(&PyType_Type, 0) |
| 2529 | "<dummy key> type", |
| 2530 | 0, |
| 2531 | 0, |
| 2532 | dummy_dealloc, /*tp_dealloc*/ /*never called*/ |
| 2533 | 0, /*tp_print*/ |
| 2534 | 0, /*tp_getattr*/ |
| 2535 | 0, /*tp_setattr*/ |
| 2536 | 0, /*tp_reserved*/ |
| 2537 | dummy_repr, /*tp_repr*/ |
| 2538 | 0, /*tp_as_number*/ |
| 2539 | 0, /*tp_as_sequence*/ |
| 2540 | 0, /*tp_as_mapping*/ |
| 2541 | 0, /*tp_hash */ |
| 2542 | 0, /*tp_call */ |
| 2543 | 0, /*tp_str */ |
| 2544 | 0, /*tp_getattro */ |
| 2545 | 0, /*tp_setattro */ |
| 2546 | 0, /*tp_as_buffer */ |
| 2547 | Py_TPFLAGS_DEFAULT, /*tp_flags */ |
| 2548 | }; |
| 2549 | |
| 2550 | static PyObject _dummy_struct = { |
| 2551 | _PyObject_EXTRA_INIT |
| 2552 | 2, &_PySetDummy_Type |
| 2553 | }; |
| 2554 | |