Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | /*********************************************************** |
Guido van Rossum | 1d5735e | 1994-08-30 08:27:36 +0000 | [diff] [blame] | 2 | Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum, |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 3 | Amsterdam, The Netherlands. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 4 | |
| 5 | All Rights Reserved |
| 6 | |
| 7 | Permission to use, copy, modify, and distribute this software and its |
| 8 | documentation for any purpose and without fee is hereby granted, |
| 9 | provided that the above copyright notice appear in all copies and that |
| 10 | both that copyright notice and this permission notice appear in |
| 11 | supporting documentation, and that the names of Stichting Mathematisch |
| 12 | Centrum or CWI not be used in advertising or publicity pertaining to |
| 13 | distribution of the software without specific, written prior permission. |
| 14 | |
| 15 | STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO |
| 16 | THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| 17 | FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE |
| 18 | FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 19 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 20 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
| 21 | OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 22 | |
| 23 | ******************************************************************/ |
| 24 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 25 | /* Function object implementation */ |
| 26 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 27 | #include "allobjects.h" |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 28 | #include "compile.h" |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 29 | #include "structmember.h" |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 30 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 31 | object * |
Guido van Rossum | 846e431 | 1990-11-18 17:44:06 +0000 | [diff] [blame] | 32 | newfuncobject(code, globals) |
| 33 | object *code; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 34 | object *globals; |
| 35 | { |
| 36 | funcobject *op = NEWOBJ(funcobject, &Functype); |
| 37 | if (op != NULL) { |
Guido van Rossum | 846e431 | 1990-11-18 17:44:06 +0000 | [diff] [blame] | 38 | INCREF(code); |
| 39 | op->func_code = code; |
| 40 | INCREF(globals); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 41 | op->func_globals = globals; |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 42 | op->func_name = ((codeobject*)(op->func_code))->co_name; |
| 43 | INCREF(op->func_name); |
Guido van Rossum | 1d5735e | 1994-08-30 08:27:36 +0000 | [diff] [blame] | 44 | op->func_argcount = -1; /* Unknown */ |
| 45 | op->func_argdefs = NULL; /* No default arguments */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 46 | } |
| 47 | return (object *)op; |
| 48 | } |
| 49 | |
Guido van Rossum | 846e431 | 1990-11-18 17:44:06 +0000 | [diff] [blame] | 50 | object * |
| 51 | getfunccode(op) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 52 | object *op; |
| 53 | { |
| 54 | if (!is_funcobject(op)) { |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 55 | err_badcall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 56 | return NULL; |
| 57 | } |
Guido van Rossum | 846e431 | 1990-11-18 17:44:06 +0000 | [diff] [blame] | 58 | return ((funcobject *) op) -> func_code; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 59 | } |
| 60 | |
| 61 | object * |
| 62 | getfuncglobals(op) |
| 63 | object *op; |
| 64 | { |
| 65 | if (!is_funcobject(op)) { |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 66 | err_badcall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 67 | return NULL; |
| 68 | } |
| 69 | return ((funcobject *) op) -> func_globals; |
| 70 | } |
| 71 | |
Guido van Rossum | 1d5735e | 1994-08-30 08:27:36 +0000 | [diff] [blame] | 72 | object * |
| 73 | getfuncargstuff(op, argcount_return) |
| 74 | object *op; |
| 75 | int *argcount_return; |
| 76 | { |
| 77 | if (!is_funcobject(op)) { |
| 78 | err_badcall(); |
| 79 | return NULL; |
| 80 | } |
| 81 | *argcount_return = ((funcobject *) op) -> func_argcount; |
| 82 | return ((funcobject *) op) -> func_argdefs; |
| 83 | } |
| 84 | |
| 85 | int |
| 86 | setfuncargstuff(op, argcount, argdefs) |
| 87 | object *op; |
| 88 | int argcount; |
| 89 | object *argdefs; |
| 90 | { |
| 91 | if (!is_funcobject(op) || |
| 92 | argdefs != NULL && !is_tupleobject(argdefs)) { |
| 93 | err_badcall(); |
| 94 | return -1; |
| 95 | } |
| 96 | if (argdefs == None) |
| 97 | argdefs = NULL; |
| 98 | else if (is_tupleobject(argdefs)) |
| 99 | XINCREF(argdefs); |
| 100 | else { |
| 101 | err_setstr(SystemError, "non-tuple default args"); |
| 102 | return -1; |
| 103 | } |
| 104 | ((funcobject *) op) -> func_argcount = argcount; |
| 105 | XDECREF(((funcobject *) op) -> func_argdefs); |
| 106 | ((funcobject *) op) -> func_argdefs = argdefs; |
| 107 | return 0; |
| 108 | } |
| 109 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 110 | /* Methods */ |
| 111 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 112 | #define OFF(x) offsetof(funcobject, x) |
| 113 | |
| 114 | static struct memberlist func_memberlist[] = { |
Guido van Rossum | a38c0ff | 1992-01-14 18:32:20 +0000 | [diff] [blame] | 115 | {"func_code", T_OBJECT, OFF(func_code), READONLY}, |
| 116 | {"func_globals",T_OBJECT, OFF(func_globals), READONLY}, |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 117 | {"func_name", T_OBJECT, OFF(func_name), READONLY}, |
Guido van Rossum | 1d5735e | 1994-08-30 08:27:36 +0000 | [diff] [blame] | 118 | {"func_argcount",T_INT, OFF(func_argcount), READONLY}, |
| 119 | {"func_argdefs",T_OBJECT, OFF(func_argdefs), READONLY}, |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 120 | {NULL} /* Sentinel */ |
| 121 | }; |
| 122 | |
| 123 | static object * |
| 124 | func_getattr(op, name) |
| 125 | funcobject *op; |
| 126 | char *name; |
| 127 | { |
| 128 | return getmember((char *)op, func_memberlist, name); |
| 129 | } |
| 130 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 131 | static void |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 132 | func_dealloc(op) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 133 | funcobject *op; |
| 134 | { |
Guido van Rossum | 846e431 | 1990-11-18 17:44:06 +0000 | [diff] [blame] | 135 | DECREF(op->func_code); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 136 | DECREF(op->func_globals); |
Guido van Rossum | 1d5735e | 1994-08-30 08:27:36 +0000 | [diff] [blame] | 137 | XDECREF(op->func_argdefs); |
Guido van Rossum | 846e431 | 1990-11-18 17:44:06 +0000 | [diff] [blame] | 138 | DEL(op); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 139 | } |
| 140 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 141 | static object* |
| 142 | func_repr(op) |
| 143 | funcobject *op; |
| 144 | { |
| 145 | char buf[140]; |
Guido van Rossum | 590baa4 | 1993-11-30 13:40:46 +0000 | [diff] [blame] | 146 | if (op->func_name == None) |
| 147 | sprintf(buf, "<anonymous function at %lx>", (long)op); |
| 148 | else |
| 149 | sprintf(buf, "<function %.100s at %lx>", |
| 150 | getstringvalue(op->func_name), |
| 151 | (long)op); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 152 | return newstringobject(buf); |
| 153 | } |
| 154 | |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 155 | static int |
| 156 | func_compare(f, g) |
| 157 | funcobject *f, *g; |
| 158 | { |
Guido van Rossum | 1d5735e | 1994-08-30 08:27:36 +0000 | [diff] [blame] | 159 | int c; |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 160 | if (f->func_globals != g->func_globals) |
| 161 | return (f->func_globals < g->func_globals) ? -1 : 1; |
Guido van Rossum | 1d5735e | 1994-08-30 08:27:36 +0000 | [diff] [blame] | 162 | c = f->func_argcount < g->func_argcount; |
| 163 | if (c != 0) |
| 164 | return c < 0 ? -1 : 1; |
| 165 | c = cmpobject(f->func_argdefs, g->func_argdefs); |
| 166 | if (c != 0) |
| 167 | return c; |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 168 | return cmpobject(f->func_code, g->func_code); |
| 169 | } |
| 170 | |
| 171 | static long |
| 172 | func_hash(f) |
| 173 | funcobject *f; |
| 174 | { |
| 175 | long h; |
| 176 | h = hashobject(f->func_code); |
| 177 | if (h == -1) return h; |
| 178 | h = h ^ (long)f->func_globals; |
| 179 | if (h == -1) h = -2; |
| 180 | return h; |
| 181 | } |
| 182 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 183 | typeobject Functype = { |
| 184 | OB_HEAD_INIT(&Typetype) |
| 185 | 0, |
| 186 | "function", |
| 187 | sizeof(funcobject), |
| 188 | 0, |
Guido van Rossum | 1d5735e | 1994-08-30 08:27:36 +0000 | [diff] [blame] | 189 | (destructor)func_dealloc, /*tp_dealloc*/ |
Guido van Rossum | 846e431 | 1990-11-18 17:44:06 +0000 | [diff] [blame] | 190 | 0, /*tp_print*/ |
Guido van Rossum | 1d5735e | 1994-08-30 08:27:36 +0000 | [diff] [blame] | 191 | (getattrfunc)func_getattr, /*tp_getattr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 192 | 0, /*tp_setattr*/ |
Guido van Rossum | 1d5735e | 1994-08-30 08:27:36 +0000 | [diff] [blame] | 193 | (cmpfunc)func_compare, /*tp_compare*/ |
| 194 | (reprfunc)func_repr, /*tp_repr*/ |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 195 | 0, /*tp_as_number*/ |
| 196 | 0, /*tp_as_sequence*/ |
| 197 | 0, /*tp_as_mapping*/ |
Guido van Rossum | 1d5735e | 1994-08-30 08:27:36 +0000 | [diff] [blame] | 198 | (hashfunc)func_hash, /*tp_hash*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 199 | }; |