Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | /*********************************************************** |
Guido van Rossum | 6610ad9 | 1995-01-04 19:07:38 +0000 | [diff] [blame] | 2 | Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam, |
| 3 | The Netherlands. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 4 | |
| 5 | All Rights Reserved |
| 6 | |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 7 | Permission to use, copy, modify, and distribute this software and its |
| 8 | documentation for any purpose and without fee is hereby granted, |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 9 | provided that the above copyright notice appear in all copies and that |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 10 | both that copyright notice and this permission notice appear in |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 11 | supporting documentation, and that the names of Stichting Mathematisch |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 12 | Centrum or CWI or Corporation for National Research Initiatives or |
| 13 | CNRI not be used in advertising or publicity pertaining to |
| 14 | distribution of the software without specific, written prior |
| 15 | permission. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 16 | |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 17 | While CWI is the initial source for this software, a modified version |
| 18 | is made available by the Corporation for National Research Initiatives |
| 19 | (CNRI) at the Internet address ftp://ftp.python.org. |
| 20 | |
| 21 | STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH |
| 22 | REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF |
| 23 | MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH |
| 24 | CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL |
| 25 | DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 26 | PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 27 | TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 28 | PERFORMANCE OF THIS SOFTWARE. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 29 | |
| 30 | ******************************************************************/ |
| 31 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 32 | /* Tuple object implementation */ |
| 33 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 34 | #include "Python.h" |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 35 | |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 36 | #ifndef MAXSAVESIZE |
| 37 | #define MAXSAVESIZE 20 |
| 38 | #endif |
| 39 | |
| 40 | #if MAXSAVESIZE > 0 |
| 41 | /* Entries 1 upto MAXSAVESIZE are free lists, entry 0 is the empty |
| 42 | tuple () of which at most one instance will be allocated. |
| 43 | */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 44 | static PyTupleObject *free_tuples[MAXSAVESIZE]; |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 45 | #endif |
| 46 | #ifdef COUNT_ALLOCS |
| 47 | int fast_tuple_allocs; |
| 48 | int tuple_zero_allocs; |
| 49 | #endif |
| 50 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 51 | PyObject * |
| 52 | PyTuple_New(size) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 53 | register int size; |
| 54 | { |
| 55 | register int i; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 56 | register PyTupleObject *op; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 57 | if (size < 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 58 | PyErr_BadInternalCall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 59 | return NULL; |
| 60 | } |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 61 | #if MAXSAVESIZE > 0 |
Sjoerd Mullender | 615194a | 1993-11-01 13:46:50 +0000 | [diff] [blame] | 62 | if (size == 0 && free_tuples[0]) { |
| 63 | op = free_tuples[0]; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 64 | Py_INCREF(op); |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 65 | #ifdef COUNT_ALLOCS |
| 66 | tuple_zero_allocs++; |
| 67 | #endif |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 68 | return (PyObject *) op; |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 69 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 70 | if (0 < size && size < MAXSAVESIZE && |
| 71 | (op = free_tuples[size]) != NULL) |
| 72 | { |
| 73 | free_tuples[size] = (PyTupleObject *) op->ob_item[0]; |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 74 | #ifdef COUNT_ALLOCS |
| 75 | fast_tuple_allocs++; |
| 76 | #endif |
| 77 | } else |
| 78 | #endif |
| 79 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 80 | op = (PyTupleObject *) malloc( |
| 81 | sizeof(PyTupleObject) + size * sizeof(PyObject *)); |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 82 | if (op == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 83 | return PyErr_NoMemory(); |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 84 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 85 | op->ob_type = &PyTuple_Type; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 86 | op->ob_size = size; |
| 87 | for (i = 0; i < size; i++) |
| 88 | op->ob_item[i] = NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 89 | _Py_NewReference(op); |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 90 | #if MAXSAVESIZE > 0 |
| 91 | if (size == 0) { |
Sjoerd Mullender | 615194a | 1993-11-01 13:46:50 +0000 | [diff] [blame] | 92 | free_tuples[0] = op; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 93 | Py_INCREF(op); /* extra INCREF so that this is never freed */ |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 94 | } |
| 95 | #endif |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 96 | return (PyObject *) op; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 97 | } |
| 98 | |
| 99 | int |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 100 | PyTuple_Size(op) |
| 101 | register PyObject *op; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 102 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 103 | if (!PyTuple_Check(op)) { |
| 104 | PyErr_BadInternalCall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 105 | return -1; |
| 106 | } |
| 107 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 108 | return ((PyTupleObject *)op)->ob_size; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 109 | } |
| 110 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 111 | PyObject * |
| 112 | PyTuple_GetItem(op, i) |
| 113 | register PyObject *op; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 114 | register int i; |
| 115 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 116 | if (!PyTuple_Check(op)) { |
| 117 | PyErr_BadInternalCall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 118 | return NULL; |
| 119 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 120 | if (i < 0 || i >= ((PyTupleObject *)op) -> ob_size) { |
| 121 | PyErr_SetString(PyExc_IndexError, "tuple index out of range"); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 122 | return NULL; |
| 123 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 124 | return ((PyTupleObject *)op) -> ob_item[i]; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 125 | } |
| 126 | |
| 127 | int |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 128 | PyTuple_SetItem(op, i, newitem) |
| 129 | register PyObject *op; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 130 | register int i; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 131 | PyObject *newitem; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 132 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 133 | register PyObject *olditem; |
| 134 | register PyObject **p; |
| 135 | if (!PyTuple_Check(op)) { |
| 136 | Py_XDECREF(newitem); |
| 137 | PyErr_BadInternalCall(); |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 138 | return -1; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 139 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 140 | if (i < 0 || i >= ((PyTupleObject *)op) -> ob_size) { |
| 141 | Py_XDECREF(newitem); |
| 142 | PyErr_SetString(PyExc_IndexError, |
| 143 | "tuple assignment index out of range"); |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 144 | return -1; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 145 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 146 | p = ((PyTupleObject *)op) -> ob_item + i; |
Guido van Rossum | 5fe6058 | 1995-03-09 12:12:50 +0000 | [diff] [blame] | 147 | olditem = *p; |
| 148 | *p = newitem; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 149 | Py_XDECREF(olditem); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 150 | return 0; |
| 151 | } |
| 152 | |
| 153 | /* Methods */ |
| 154 | |
| 155 | static void |
| 156 | tupledealloc(op) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 157 | register PyTupleObject *op; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 158 | { |
| 159 | register int i; |
Guido van Rossum | 12d12c5 | 1993-10-26 17:58:25 +0000 | [diff] [blame] | 160 | for (i = 0; i < op->ob_size; i++) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 161 | Py_XDECREF(op->ob_item[i]); |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 162 | #if MAXSAVESIZE > 0 |
| 163 | if (0 < op->ob_size && op->ob_size < MAXSAVESIZE) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 164 | op->ob_item[0] = (PyObject *) free_tuples[op->ob_size]; |
Sjoerd Mullender | 615194a | 1993-11-01 13:46:50 +0000 | [diff] [blame] | 165 | free_tuples[op->ob_size] = op; |
Sjoerd Mullender | 842d2cc | 1993-10-15 16:18:48 +0000 | [diff] [blame] | 166 | } else |
| 167 | #endif |
| 168 | free((ANY *)op); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 169 | } |
| 170 | |
Guido van Rossum | 49e8514 | 1991-06-07 22:59:30 +0000 | [diff] [blame] | 171 | static int |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 172 | tupleprint(op, fp, flags) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 173 | PyTupleObject *op; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 174 | FILE *fp; |
| 175 | int flags; |
| 176 | { |
| 177 | int i; |
| 178 | fprintf(fp, "("); |
Guido van Rossum | 49e8514 | 1991-06-07 22:59:30 +0000 | [diff] [blame] | 179 | for (i = 0; i < op->ob_size; i++) { |
| 180 | if (i > 0) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 181 | fprintf(fp, ", "); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 182 | if (PyObject_Print(op->ob_item[i], fp, 0) != 0) |
Guido van Rossum | 49e8514 | 1991-06-07 22:59:30 +0000 | [diff] [blame] | 183 | return -1; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 184 | } |
| 185 | if (op->ob_size == 1) |
| 186 | fprintf(fp, ","); |
| 187 | fprintf(fp, ")"); |
Guido van Rossum | 49e8514 | 1991-06-07 22:59:30 +0000 | [diff] [blame] | 188 | return 0; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 189 | } |
| 190 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 191 | static PyObject * |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 192 | tuplerepr(v) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 193 | PyTupleObject *v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 194 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 195 | PyObject *s, *comma; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 196 | int i; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 197 | s = PyString_FromString("("); |
| 198 | comma = PyString_FromString(", "); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 199 | for (i = 0; i < v->ob_size && s != NULL; i++) { |
| 200 | if (i > 0) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 201 | PyString_Concat(&s, comma); |
| 202 | PyString_ConcatAndDel(&s, PyObject_Repr(v->ob_item[i])); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 203 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 204 | Py_DECREF(comma); |
Guido van Rossum | 1d5735e | 1994-08-30 08:27:36 +0000 | [diff] [blame] | 205 | if (v->ob_size == 1) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 206 | PyString_ConcatAndDel(&s, PyString_FromString(",")); |
| 207 | PyString_ConcatAndDel(&s, PyString_FromString(")")); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 208 | return s; |
| 209 | } |
| 210 | |
| 211 | static int |
| 212 | tuplecompare(v, w) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 213 | register PyTupleObject *v, *w; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 214 | { |
| 215 | register int len = |
| 216 | (v->ob_size < w->ob_size) ? v->ob_size : w->ob_size; |
| 217 | register int i; |
| 218 | for (i = 0; i < len; i++) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 219 | int cmp = PyObject_Compare(v->ob_item[i], w->ob_item[i]); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 220 | if (cmp != 0) |
| 221 | return cmp; |
| 222 | } |
| 223 | return v->ob_size - w->ob_size; |
| 224 | } |
| 225 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 226 | static long |
| 227 | tuplehash(v) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 228 | PyTupleObject *v; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 229 | { |
| 230 | register long x, y; |
| 231 | register int len = v->ob_size; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 232 | register PyObject **p; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 233 | x = 0x345678L; |
| 234 | p = v->ob_item; |
| 235 | while (--len >= 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 236 | y = PyObject_Hash(*p++); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 237 | if (y == -1) |
| 238 | return -1; |
Guido van Rossum | 0969ad2 | 1996-12-16 17:55:46 +0000 | [diff] [blame] | 239 | x = (1000003*x) ^ y; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 240 | } |
| 241 | x ^= v->ob_size; |
| 242 | if (x == -1) |
| 243 | x = -2; |
| 244 | return x; |
| 245 | } |
| 246 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 247 | static int |
| 248 | tuplelength(a) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 249 | PyTupleObject *a; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 250 | { |
| 251 | return a->ob_size; |
| 252 | } |
| 253 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 254 | static PyObject * |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 255 | tupleitem(a, i) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 256 | register PyTupleObject *a; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 257 | register int i; |
| 258 | { |
| 259 | if (i < 0 || i >= a->ob_size) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 260 | PyErr_SetString(PyExc_IndexError, "tuple index out of range"); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 261 | return NULL; |
| 262 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 263 | Py_INCREF(a->ob_item[i]); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 264 | return a->ob_item[i]; |
| 265 | } |
| 266 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 267 | static PyObject * |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 268 | tupleslice(a, ilow, ihigh) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 269 | register PyTupleObject *a; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 270 | register int ilow, ihigh; |
| 271 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 272 | register PyTupleObject *np; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 273 | register int i; |
| 274 | if (ilow < 0) |
| 275 | ilow = 0; |
| 276 | if (ihigh > a->ob_size) |
| 277 | ihigh = a->ob_size; |
| 278 | if (ihigh < ilow) |
| 279 | ihigh = ilow; |
| 280 | if (ilow == 0 && ihigh == a->ob_size) { |
| 281 | /* XXX can only do this if tuples are immutable! */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 282 | Py_INCREF(a); |
| 283 | return (PyObject *)a; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 284 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 285 | np = (PyTupleObject *)PyTuple_New(ihigh - ilow); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 286 | if (np == NULL) |
| 287 | return NULL; |
| 288 | for (i = ilow; i < ihigh; i++) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 289 | PyObject *v = a->ob_item[i]; |
| 290 | Py_INCREF(v); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 291 | np->ob_item[i - ilow] = v; |
| 292 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 293 | return (PyObject *)np; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 294 | } |
| 295 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 296 | PyObject * |
| 297 | PyTuple_GetSlice(op, i, j) |
| 298 | PyObject *op; |
Guido van Rossum | 7c36ad7 | 1992-01-14 18:45:33 +0000 | [diff] [blame] | 299 | int i, j; |
| 300 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 301 | if (op == NULL || !PyTuple_Check(op)) { |
| 302 | PyErr_BadInternalCall(); |
Guido van Rossum | 7c36ad7 | 1992-01-14 18:45:33 +0000 | [diff] [blame] | 303 | return NULL; |
| 304 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 305 | return tupleslice((PyTupleObject *)op, i, j); |
Guido van Rossum | 7c36ad7 | 1992-01-14 18:45:33 +0000 | [diff] [blame] | 306 | } |
| 307 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 308 | static PyObject * |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 309 | tupleconcat(a, bb) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 310 | register PyTupleObject *a; |
| 311 | register PyObject *bb; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 312 | { |
| 313 | register int size; |
| 314 | register int i; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 315 | PyTupleObject *np; |
| 316 | if (!PyTuple_Check(bb)) { |
| 317 | PyErr_BadArgument(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 318 | return NULL; |
| 319 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 320 | #define b ((PyTupleObject *)bb) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 321 | size = a->ob_size + b->ob_size; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 322 | np = (PyTupleObject *) PyTuple_New(size); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 323 | if (np == NULL) { |
Guido van Rossum | 49e8514 | 1991-06-07 22:59:30 +0000 | [diff] [blame] | 324 | return NULL; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 325 | } |
| 326 | for (i = 0; i < a->ob_size; i++) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 327 | PyObject *v = a->ob_item[i]; |
| 328 | Py_INCREF(v); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 329 | np->ob_item[i] = v; |
| 330 | } |
| 331 | for (i = 0; i < b->ob_size; i++) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 332 | PyObject *v = b->ob_item[i]; |
| 333 | Py_INCREF(v); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 334 | np->ob_item[i + a->ob_size] = v; |
| 335 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 336 | return (PyObject *)np; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 337 | #undef b |
| 338 | } |
| 339 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 340 | static PyObject * |
Guido van Rossum | b8393da | 1991-06-04 19:35:24 +0000 | [diff] [blame] | 341 | tuplerepeat(a, n) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 342 | PyTupleObject *a; |
Guido van Rossum | b8393da | 1991-06-04 19:35:24 +0000 | [diff] [blame] | 343 | int n; |
| 344 | { |
| 345 | int i, j; |
| 346 | int size; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 347 | PyTupleObject *np; |
| 348 | PyObject **p; |
Guido van Rossum | b8393da | 1991-06-04 19:35:24 +0000 | [diff] [blame] | 349 | if (n < 0) |
| 350 | n = 0; |
| 351 | if (a->ob_size*n == a->ob_size) { |
| 352 | /* Since tuples are immutable, we can return a shared |
| 353 | copy in this case */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 354 | Py_INCREF(a); |
| 355 | return (PyObject *)a; |
Guido van Rossum | b8393da | 1991-06-04 19:35:24 +0000 | [diff] [blame] | 356 | } |
| 357 | size = a->ob_size * n; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 358 | np = (PyTupleObject *) PyTuple_New(size); |
Guido van Rossum | b8393da | 1991-06-04 19:35:24 +0000 | [diff] [blame] | 359 | if (np == NULL) |
| 360 | return NULL; |
| 361 | p = np->ob_item; |
| 362 | for (i = 0; i < n; i++) { |
| 363 | for (j = 0; j < a->ob_size; j++) { |
| 364 | *p = a->ob_item[j]; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 365 | Py_INCREF(*p); |
Guido van Rossum | b8393da | 1991-06-04 19:35:24 +0000 | [diff] [blame] | 366 | p++; |
| 367 | } |
| 368 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 369 | return (PyObject *) np; |
Guido van Rossum | b8393da | 1991-06-04 19:35:24 +0000 | [diff] [blame] | 370 | } |
| 371 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 372 | static PySequenceMethods tuple_as_sequence = { |
Guido van Rossum | 1d5735e | 1994-08-30 08:27:36 +0000 | [diff] [blame] | 373 | (inquiry)tuplelength, /*sq_length*/ |
| 374 | (binaryfunc)tupleconcat, /*sq_concat*/ |
| 375 | (intargfunc)tuplerepeat, /*sq_repeat*/ |
| 376 | (intargfunc)tupleitem, /*sq_item*/ |
| 377 | (intintargfunc)tupleslice, /*sq_slice*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 378 | 0, /*sq_ass_item*/ |
| 379 | 0, /*sq_ass_slice*/ |
| 380 | }; |
| 381 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 382 | PyTypeObject PyTuple_Type = { |
| 383 | PyObject_HEAD_INIT(&PyType_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 384 | 0, |
| 385 | "tuple", |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 386 | sizeof(PyTupleObject) - sizeof(PyObject *), |
| 387 | sizeof(PyObject *), |
Guido van Rossum | 1d5735e | 1994-08-30 08:27:36 +0000 | [diff] [blame] | 388 | (destructor)tupledealloc, /*tp_dealloc*/ |
| 389 | (printfunc)tupleprint, /*tp_print*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 390 | 0, /*tp_getattr*/ |
| 391 | 0, /*tp_setattr*/ |
Guido van Rossum | 1d5735e | 1994-08-30 08:27:36 +0000 | [diff] [blame] | 392 | (cmpfunc)tuplecompare, /*tp_compare*/ |
| 393 | (reprfunc)tuplerepr, /*tp_repr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 394 | 0, /*tp_as_number*/ |
| 395 | &tuple_as_sequence, /*tp_as_sequence*/ |
| 396 | 0, /*tp_as_mapping*/ |
Guido van Rossum | 1d5735e | 1994-08-30 08:27:36 +0000 | [diff] [blame] | 397 | (hashfunc)tuplehash, /*tp_hash*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 398 | }; |
Guido van Rossum | 12d12c5 | 1993-10-26 17:58:25 +0000 | [diff] [blame] | 399 | |
| 400 | /* The following function breaks the notion that tuples are immutable: |
| 401 | it changes the size of a tuple. We get away with this only if there |
| 402 | is only one module referencing the object. You can also think of it |
| 403 | as creating a new tuple object and destroying the old one, only |
| 404 | more efficiently. In any case, don't use this if the tuple may |
Sjoerd Mullender | 615194a | 1993-11-01 13:46:50 +0000 | [diff] [blame] | 405 | already be known to some other part of the code... |
| 406 | If last_is_sticky is set, the tuple will grow or shrink at the |
| 407 | front, otherwise it will grow or shrink at the end. */ |
Guido van Rossum | 12d12c5 | 1993-10-26 17:58:25 +0000 | [diff] [blame] | 408 | |
| 409 | int |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 410 | _PyTuple_Resize(pv, newsize, last_is_sticky) |
| 411 | PyObject **pv; |
Guido van Rossum | 12d12c5 | 1993-10-26 17:58:25 +0000 | [diff] [blame] | 412 | int newsize; |
Sjoerd Mullender | 615194a | 1993-11-01 13:46:50 +0000 | [diff] [blame] | 413 | int last_is_sticky; |
Guido van Rossum | 12d12c5 | 1993-10-26 17:58:25 +0000 | [diff] [blame] | 414 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 415 | register PyTupleObject *v; |
| 416 | register PyTupleObject *sv; |
Sjoerd Mullender | 615194a | 1993-11-01 13:46:50 +0000 | [diff] [blame] | 417 | int i; |
| 418 | int sizediff; |
| 419 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 420 | v = (PyTupleObject *) *pv; |
| 421 | if (v == NULL || !PyTuple_Check(v) || v->ob_refcnt != 1) { |
Guido van Rossum | 12d12c5 | 1993-10-26 17:58:25 +0000 | [diff] [blame] | 422 | *pv = 0; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 423 | Py_DECREF(v); |
| 424 | PyErr_BadInternalCall(); |
Guido van Rossum | 12d12c5 | 1993-10-26 17:58:25 +0000 | [diff] [blame] | 425 | return -1; |
| 426 | } |
Guido van Rossum | 055968c | 1995-08-04 04:05:10 +0000 | [diff] [blame] | 427 | sizediff = newsize - v->ob_size; |
Sjoerd Mullender | 615194a | 1993-11-01 13:46:50 +0000 | [diff] [blame] | 428 | if (sizediff == 0) |
| 429 | return 0; |
Guido van Rossum | 12d12c5 | 1993-10-26 17:58:25 +0000 | [diff] [blame] | 430 | /* XXX UNREF/NEWREF interface should be more symmetrical */ |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 431 | #ifdef Py_REF_DEBUG |
Guido van Rossum | 6f9e433 | 1995-03-29 16:57:48 +0000 | [diff] [blame] | 432 | --_Py_RefTotal; |
Guido van Rossum | 12d12c5 | 1993-10-26 17:58:25 +0000 | [diff] [blame] | 433 | #endif |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 434 | _Py_ForgetReference(v); |
Sjoerd Mullender | 615194a | 1993-11-01 13:46:50 +0000 | [diff] [blame] | 435 | if (last_is_sticky && sizediff < 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 436 | /* shrinking: |
| 437 | move entries to the front and zero moved entries */ |
Sjoerd Mullender | 615194a | 1993-11-01 13:46:50 +0000 | [diff] [blame] | 438 | for (i = 0; i < newsize; i++) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 439 | Py_XDECREF(v->ob_item[i]); |
Sjoerd Mullender | 615194a | 1993-11-01 13:46:50 +0000 | [diff] [blame] | 440 | v->ob_item[i] = v->ob_item[i - sizediff]; |
| 441 | v->ob_item[i - sizediff] = NULL; |
| 442 | } |
| 443 | } |
| 444 | for (i = newsize; i < v->ob_size; i++) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 445 | Py_XDECREF(v->ob_item[i]); |
Sjoerd Mullender | 615194a | 1993-11-01 13:46:50 +0000 | [diff] [blame] | 446 | v->ob_item[i] = NULL; |
| 447 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 448 | sv = (PyTupleObject *) |
Guido van Rossum | 12d12c5 | 1993-10-26 17:58:25 +0000 | [diff] [blame] | 449 | realloc((char *)v, |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 450 | sizeof(PyTupleObject) + newsize * sizeof(PyObject *)); |
| 451 | *pv = (PyObject *) sv; |
Sjoerd Mullender | 615194a | 1993-11-01 13:46:50 +0000 | [diff] [blame] | 452 | if (sv == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 453 | PyMem_DEL(v); |
| 454 | PyErr_NoMemory(); |
Guido van Rossum | 12d12c5 | 1993-10-26 17:58:25 +0000 | [diff] [blame] | 455 | return -1; |
| 456 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 457 | _Py_NewReference(sv); |
Sjoerd Mullender | 615194a | 1993-11-01 13:46:50 +0000 | [diff] [blame] | 458 | for (i = sv->ob_size; i < newsize; i++) |
| 459 | sv->ob_item[i] = NULL; |
| 460 | if (last_is_sticky && sizediff > 0) { |
| 461 | /* growing: move entries to the end and zero moved entries */ |
| 462 | for (i = newsize - 1; i >= sizediff; i--) { |
| 463 | sv->ob_item[i] = sv->ob_item[i - sizediff]; |
| 464 | sv->ob_item[i - sizediff] = NULL; |
| 465 | } |
| 466 | } |
| 467 | sv->ob_size = newsize; |
Guido van Rossum | 12d12c5 | 1993-10-26 17:58:25 +0000 | [diff] [blame] | 468 | return 0; |
| 469 | } |