Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | /*********************************************************** |
Guido van Rossum | eee3fd4 | 1992-04-05 14:18:13 +0000 | [diff] [blame] | 2 | Copyright 1991, 1992 by Stichting Mathematisch Centrum, Amsterdam, The |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 3 | Netherlands. |
| 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 | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 25 | /* Execute compiled code */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 26 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 27 | #include "allobjects.h" |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 28 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 29 | #include "import.h" |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 30 | #include "sysmodule.h" |
| 31 | #include "compile.h" |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 32 | #include "frameobject.h" |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame^] | 33 | #include "eval.h" |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 34 | #include "ceval.h" |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 35 | #include "opcode.h" |
Guido van Rossum | 86cd6e6 | 1991-01-21 15:12:35 +0000 | [diff] [blame] | 36 | #include "bltinmodule.h" |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 37 | #include "traceback.h" |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 38 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 39 | #ifndef NDEBUG |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 40 | /* For debugging the interpreter: */ |
| 41 | #define LLTRACE 1 /* Low-level trace feature */ |
| 42 | #define CHECKEXC 1 /* Double-check exception checking */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 43 | #endif |
| 44 | |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 45 | /* Forward declarations */ |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 46 | |
Guido van Rossum | 0a066c0 | 1992-03-27 17:29:15 +0000 | [diff] [blame] | 47 | #ifdef LLTRACE |
| 48 | static int prtrace PROTO((object *, char *)); |
| 49 | #endif |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 50 | static void call_exc_trace PROTO((object **, object**, frameobject *)); |
| 51 | static int call_trace |
| 52 | PROTO((object **, object **, frameobject *, char *, object *)); |
Guido van Rossum | 0a066c0 | 1992-03-27 17:29:15 +0000 | [diff] [blame] | 53 | static int testbool PROTO((object *)); |
| 54 | static object *add PROTO((object *, object *)); |
| 55 | static object *sub PROTO((object *, object *)); |
| 56 | static object *mul PROTO((object *, object *)); |
| 57 | static object *divide PROTO((object *, object *)); |
| 58 | static object *rem PROTO((object *, object *)); |
| 59 | static object *neg PROTO((object *)); |
| 60 | static object *pos PROTO((object *)); |
| 61 | static object *not PROTO((object *)); |
| 62 | static object *invert PROTO((object *)); |
| 63 | static object *lshift PROTO((object *, object *)); |
| 64 | static object *rshift PROTO((object *, object *)); |
| 65 | static object *and PROTO((object *, object *)); |
| 66 | static object *xor PROTO((object *, object *)); |
| 67 | static object *or PROTO((object *, object *)); |
| 68 | static object *call_builtin PROTO((object *, object *)); |
| 69 | static object *call_function PROTO((object *, object *)); |
| 70 | static object *apply_subscript PROTO((object *, object *)); |
| 71 | static object *loop_subscript PROTO((object *, object *)); |
| 72 | static int slice_index PROTO((object *, int, int *)); |
| 73 | static object *apply_slice PROTO((object *, object *, object *)); |
| 74 | static int assign_subscript PROTO((object *, object *, object *)); |
| 75 | static int assign_slice PROTO((object *, object *, object *, object *)); |
| 76 | static int cmp_exception PROTO((object *, object *)); |
| 77 | static int cmp_member PROTO((object *, object *)); |
Guido van Rossum | 5b7313a | 1992-04-06 13:24:57 +0000 | [diff] [blame] | 78 | static object *cmp_outcome PROTO((int, object *, object *)); |
Guido van Rossum | 0a066c0 | 1992-03-27 17:29:15 +0000 | [diff] [blame] | 79 | static int import_from PROTO((object *, object *, object *)); |
| 80 | static object *build_class PROTO((object *, object *)); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 81 | |
| 82 | |
Guido van Rossum | 0a066c0 | 1992-03-27 17:29:15 +0000 | [diff] [blame] | 83 | /* Pointer to current frame, used to link new frames to */ |
| 84 | |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 85 | static frameobject *current_frame; |
| 86 | |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 87 | #ifdef USE_THREAD |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame^] | 88 | |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 89 | #include <errno.h> |
| 90 | #include "thread.h" |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame^] | 91 | |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 92 | static type_lock interpreter_lock; |
| 93 | |
| 94 | void |
| 95 | init_save_thread() |
| 96 | { |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 97 | if (interpreter_lock) |
| 98 | fatal("2nd call to init_save_thread"); |
| 99 | interpreter_lock = allocate_lock(); |
| 100 | acquire_lock(interpreter_lock, 1); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 101 | } |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame^] | 102 | |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 103 | #endif |
| 104 | |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame^] | 105 | /* Functions save_thread and restore_thread are always defined so |
| 106 | dynamically loaded modules needn't be compiled separately for use |
| 107 | with and without threads: */ |
| 108 | |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 109 | void * |
| 110 | save_thread() |
| 111 | { |
| 112 | #ifdef USE_THREAD |
| 113 | if (interpreter_lock) { |
| 114 | void *res; |
| 115 | res = (void *)current_frame; |
| 116 | current_frame = NULL; |
| 117 | release_lock(interpreter_lock); |
| 118 | return res; |
| 119 | } |
| 120 | else |
| 121 | return NULL; |
| 122 | #endif |
| 123 | } |
| 124 | |
| 125 | void |
| 126 | restore_thread(x) |
| 127 | void *x; |
| 128 | { |
| 129 | #ifdef USE_THREAD |
| 130 | if (interpreter_lock) { |
| 131 | int err; |
| 132 | err = errno; |
| 133 | acquire_lock(interpreter_lock, 1); |
| 134 | errno = err; |
| 135 | current_frame = (frameobject *)x; |
| 136 | } |
| 137 | #endif |
| 138 | } |
| 139 | |
| 140 | |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 141 | /* Status code for main loop (reason for stack unwind) */ |
| 142 | |
| 143 | enum why_code { |
| 144 | WHY_NOT, /* No error */ |
| 145 | WHY_EXCEPTION, /* Exception occurred */ |
| 146 | WHY_RERAISE, /* Exception re-raised by 'finally' */ |
| 147 | WHY_RETURN, /* 'return' statement */ |
| 148 | WHY_BREAK /* 'break' statement */ |
| 149 | }; |
| 150 | |
| 151 | |
| 152 | /* Interpreter main loop */ |
| 153 | |
| 154 | object * |
| 155 | eval_code(co, globals, locals, arg) |
| 156 | codeobject *co; |
| 157 | object *globals; |
| 158 | object *locals; |
| 159 | object *arg; |
| 160 | { |
| 161 | register unsigned char *next_instr; |
| 162 | register int opcode; /* Current opcode */ |
| 163 | register int oparg; /* Current opcode argument, if any */ |
| 164 | register object **stack_pointer; |
| 165 | register enum why_code why; /* Reason for block stack unwind */ |
| 166 | register int err; /* Error status -- nonzero if error */ |
| 167 | register object *x; /* Result object -- NULL if error */ |
| 168 | register object *v; /* Temporary objects popped off stack */ |
| 169 | register object *w; |
| 170 | register object *u; |
| 171 | register object *t; |
| 172 | register frameobject *f; /* Current frame */ |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 173 | object *trace = NULL; /* Trace function or NULL */ |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 174 | object *retval; /* Return value iff why == WHY_RETURN */ |
| 175 | char *name; /* Name used by some instructions */ |
| 176 | FILE *fp; /* Used by print operations */ |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 177 | #ifdef LLTRACE |
| 178 | int lltrace = dictlookup(globals, "__lltrace__") != NULL; |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 179 | #endif |
| 180 | |
| 181 | /* Code access macros */ |
| 182 | |
| 183 | #define GETCONST(i) Getconst(f, i) |
| 184 | #define GETNAME(i) Getname(f, i) |
| 185 | #define GETNAMEV(i) Getnamev(f, i) |
| 186 | #define FIRST_INSTR() (GETUSTRINGVALUE(f->f_code->co_code)) |
| 187 | #define INSTR_OFFSET() (next_instr - FIRST_INSTR()) |
| 188 | #define NEXTOP() (*next_instr++) |
| 189 | #define NEXTARG() (next_instr += 2, (next_instr[-1]<<8) + next_instr[-2]) |
| 190 | #define JUMPTO(x) (next_instr = FIRST_INSTR() + (x)) |
| 191 | #define JUMPBY(x) (next_instr += (x)) |
| 192 | |
| 193 | /* Stack manipulation macros */ |
| 194 | |
| 195 | #define STACK_LEVEL() (stack_pointer - f->f_valuestack) |
| 196 | #define EMPTY() (STACK_LEVEL() == 0) |
| 197 | #define TOP() (stack_pointer[-1]) |
| 198 | #define BASIC_PUSH(v) (*stack_pointer++ = (v)) |
| 199 | #define BASIC_POP() (*--stack_pointer) |
| 200 | |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 201 | #ifdef LLTRACE |
| 202 | #define PUSH(v) (BASIC_PUSH(v), lltrace && prtrace(TOP(), "push")) |
| 203 | #define POP() (lltrace && prtrace(TOP(), "pop"), BASIC_POP()) |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 204 | #else |
| 205 | #define PUSH(v) BASIC_PUSH(v) |
| 206 | #define POP() BASIC_POP() |
| 207 | #endif |
| 208 | |
| 209 | f = newframeobject( |
| 210 | current_frame, /*back*/ |
| 211 | co, /*code*/ |
| 212 | globals, /*globals*/ |
| 213 | locals, /*locals*/ |
| 214 | 50, /*nvalues*/ |
| 215 | 20); /*nblocks*/ |
| 216 | if (f == NULL) |
| 217 | return NULL; |
| 218 | |
| 219 | current_frame = f; |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 220 | |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 221 | if (sys_trace != NULL) { |
| 222 | /* sys_trace, if defined, is a function that will |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 223 | be called on *every* entry to a code block. |
| 224 | Its return value, if not None, is a function that |
| 225 | will be called at the start of each executed line |
| 226 | of code. (Actually, the function must return |
| 227 | itself in order to continue tracing.) |
| 228 | The trace functions are called with three arguments: |
| 229 | a pointer to the current frame, a string indicating |
| 230 | why the function is called, and an argument which |
| 231 | depends on the situation. The global trace function |
| 232 | (sys.trace) is also called whenever an exception |
| 233 | is detected. */ |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 234 | if (call_trace(&sys_trace, &trace, f, "call", arg)) { |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 235 | /* Trace function raised an error */ |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 236 | current_frame = f->f_back; |
| 237 | DECREF(f); |
| 238 | return NULL; |
| 239 | } |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 240 | } |
| 241 | |
| 242 | if (sys_profile != NULL) { |
| 243 | /* Similar for sys_profile, except it needn't return |
| 244 | itself and isn't called for "line" events */ |
| 245 | if (call_trace(&sys_profile, (object**)0, f, "call", arg)) { |
| 246 | current_frame = f->f_back; |
| 247 | DECREF(f); |
| 248 | return NULL; |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 249 | } |
| 250 | } |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 251 | |
| 252 | next_instr = GETUSTRINGVALUE(f->f_code->co_code); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 253 | stack_pointer = f->f_valuestack; |
| 254 | |
| 255 | if (arg != NULL) { |
| 256 | INCREF(arg); |
| 257 | PUSH(arg); |
| 258 | } |
| 259 | |
| 260 | why = WHY_NOT; |
| 261 | err = 0; |
| 262 | x = None; /* Not a reference, just anything non-NULL */ |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 263 | |
| 264 | for (;;) { |
Guido van Rossum | 4965bc8 | 1991-05-14 11:51:49 +0000 | [diff] [blame] | 265 | static int ticker; |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 266 | |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 267 | /* Do periodic things. |
| 268 | Doing this every time through the loop would add |
| 269 | too much overhead (a function call per instruction). |
| 270 | So we do it only every tenth instruction. */ |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 271 | |
| 272 | if (--ticker < 0) { |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 273 | ticker = 10; |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 274 | if (intrcheck()) { |
| 275 | err_set(KeyboardInterrupt); |
| 276 | why = WHY_EXCEPTION; |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 277 | goto on_error; |
| 278 | } |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 279 | |
| 280 | #ifdef USE_THREAD |
| 281 | if (interpreter_lock) { |
| 282 | /* Give another thread a chance */ |
| 283 | |
| 284 | current_frame = NULL; |
| 285 | release_lock(interpreter_lock); |
| 286 | |
| 287 | /* Other threads may run now */ |
| 288 | |
| 289 | acquire_lock(interpreter_lock, 1); |
| 290 | current_frame = f; |
| 291 | } |
| 292 | #endif |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 293 | } |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 294 | |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 295 | /* Extract opcode and argument */ |
| 296 | |
| 297 | opcode = NEXTOP(); |
| 298 | if (HAS_ARG(opcode)) |
| 299 | oparg = NEXTARG(); |
| 300 | |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 301 | #ifdef LLTRACE |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 302 | /* Instruction tracing */ |
| 303 | |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 304 | if (lltrace) { |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 305 | if (HAS_ARG(opcode)) { |
| 306 | printf("%d: %d, %d\n", |
| 307 | (int) (INSTR_OFFSET() - 3), |
| 308 | opcode, oparg); |
| 309 | } |
| 310 | else { |
| 311 | printf("%d: %d\n", |
| 312 | (int) (INSTR_OFFSET() - 1), opcode); |
| 313 | } |
| 314 | } |
| 315 | #endif |
| 316 | |
| 317 | /* Main switch on opcode */ |
| 318 | |
| 319 | switch (opcode) { |
| 320 | |
| 321 | /* BEWARE! |
| 322 | It is essential that any operation that fails sets either |
| 323 | x to NULL, err to nonzero, or why to anything but WHY_NOT, |
| 324 | and that no operation that succeeds does this! */ |
| 325 | |
| 326 | /* case STOP_CODE: this is an error! */ |
| 327 | |
| 328 | case POP_TOP: |
| 329 | v = POP(); |
| 330 | DECREF(v); |
| 331 | break; |
| 332 | |
| 333 | case ROT_TWO: |
| 334 | v = POP(); |
| 335 | w = POP(); |
| 336 | PUSH(v); |
| 337 | PUSH(w); |
| 338 | break; |
| 339 | |
| 340 | case ROT_THREE: |
| 341 | v = POP(); |
| 342 | w = POP(); |
| 343 | x = POP(); |
| 344 | PUSH(v); |
| 345 | PUSH(x); |
| 346 | PUSH(w); |
| 347 | break; |
| 348 | |
| 349 | case DUP_TOP: |
| 350 | v = TOP(); |
| 351 | INCREF(v); |
| 352 | PUSH(v); |
| 353 | break; |
| 354 | |
| 355 | case UNARY_POSITIVE: |
| 356 | v = POP(); |
| 357 | x = pos(v); |
| 358 | DECREF(v); |
| 359 | PUSH(x); |
| 360 | break; |
| 361 | |
| 362 | case UNARY_NEGATIVE: |
| 363 | v = POP(); |
| 364 | x = neg(v); |
| 365 | DECREF(v); |
| 366 | PUSH(x); |
| 367 | break; |
| 368 | |
| 369 | case UNARY_NOT: |
| 370 | v = POP(); |
| 371 | x = not(v); |
| 372 | DECREF(v); |
| 373 | PUSH(x); |
| 374 | break; |
| 375 | |
| 376 | case UNARY_CONVERT: |
| 377 | v = POP(); |
| 378 | x = reprobject(v); |
| 379 | DECREF(v); |
| 380 | PUSH(x); |
| 381 | break; |
| 382 | |
| 383 | case UNARY_CALL: |
| 384 | v = POP(); |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 385 | f->f_lasti = INSTR_OFFSET() - 1; /* For tracing */ |
Guido van Rossum | 9c7b861 | 1991-12-16 13:04:47 +0000 | [diff] [blame] | 386 | x = call_object(v, (object *)NULL); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 387 | DECREF(v); |
| 388 | PUSH(x); |
| 389 | break; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 390 | |
| 391 | case UNARY_INVERT: |
| 392 | v = POP(); |
| 393 | x = invert(v); |
| 394 | DECREF(v); |
| 395 | PUSH(x); |
| 396 | break; |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 397 | |
| 398 | case BINARY_MULTIPLY: |
| 399 | w = POP(); |
| 400 | v = POP(); |
| 401 | x = mul(v, w); |
| 402 | DECREF(v); |
| 403 | DECREF(w); |
| 404 | PUSH(x); |
| 405 | break; |
| 406 | |
| 407 | case BINARY_DIVIDE: |
| 408 | w = POP(); |
| 409 | v = POP(); |
| 410 | x = divide(v, w); |
| 411 | DECREF(v); |
| 412 | DECREF(w); |
| 413 | PUSH(x); |
| 414 | break; |
| 415 | |
| 416 | case BINARY_MODULO: |
| 417 | w = POP(); |
| 418 | v = POP(); |
| 419 | x = rem(v, w); |
| 420 | DECREF(v); |
| 421 | DECREF(w); |
| 422 | PUSH(x); |
| 423 | break; |
| 424 | |
| 425 | case BINARY_ADD: |
| 426 | w = POP(); |
| 427 | v = POP(); |
| 428 | x = add(v, w); |
| 429 | DECREF(v); |
| 430 | DECREF(w); |
| 431 | PUSH(x); |
| 432 | break; |
| 433 | |
| 434 | case BINARY_SUBTRACT: |
| 435 | w = POP(); |
| 436 | v = POP(); |
| 437 | x = sub(v, w); |
| 438 | DECREF(v); |
| 439 | DECREF(w); |
| 440 | PUSH(x); |
| 441 | break; |
| 442 | |
| 443 | case BINARY_SUBSCR: |
| 444 | w = POP(); |
| 445 | v = POP(); |
| 446 | x = apply_subscript(v, w); |
| 447 | DECREF(v); |
| 448 | DECREF(w); |
| 449 | PUSH(x); |
| 450 | break; |
| 451 | |
| 452 | case BINARY_CALL: |
| 453 | w = POP(); |
| 454 | v = POP(); |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 455 | f->f_lasti = INSTR_OFFSET() - 1; /* For tracing */ |
Guido van Rossum | 9c7b861 | 1991-12-16 13:04:47 +0000 | [diff] [blame] | 456 | x = call_object(v, w); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 457 | DECREF(v); |
| 458 | DECREF(w); |
| 459 | PUSH(x); |
| 460 | break; |
| 461 | |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 462 | case BINARY_LSHIFT: |
| 463 | w = POP(); |
| 464 | v = POP(); |
| 465 | x = lshift(v, w); |
| 466 | DECREF(v); |
| 467 | DECREF(w); |
| 468 | PUSH(x); |
| 469 | break; |
| 470 | |
| 471 | case BINARY_RSHIFT: |
| 472 | w = POP(); |
| 473 | v = POP(); |
| 474 | x = rshift(v, w); |
| 475 | DECREF(v); |
| 476 | DECREF(w); |
| 477 | PUSH(x); |
| 478 | break; |
| 479 | |
| 480 | case BINARY_AND: |
| 481 | w = POP(); |
| 482 | v = POP(); |
| 483 | x = and(v, w); |
| 484 | DECREF(v); |
| 485 | DECREF(w); |
| 486 | PUSH(x); |
| 487 | break; |
| 488 | |
| 489 | case BINARY_XOR: |
| 490 | w = POP(); |
| 491 | v = POP(); |
| 492 | x = xor(v, w); |
| 493 | DECREF(v); |
| 494 | DECREF(w); |
| 495 | PUSH(x); |
| 496 | break; |
| 497 | |
| 498 | case BINARY_OR: |
| 499 | w = POP(); |
| 500 | v = POP(); |
| 501 | x = or(v, w); |
| 502 | DECREF(v); |
| 503 | DECREF(w); |
| 504 | PUSH(x); |
| 505 | break; |
| 506 | |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 507 | case SLICE+0: |
| 508 | case SLICE+1: |
| 509 | case SLICE+2: |
| 510 | case SLICE+3: |
| 511 | if ((opcode-SLICE) & 2) |
| 512 | w = POP(); |
| 513 | else |
| 514 | w = NULL; |
| 515 | if ((opcode-SLICE) & 1) |
| 516 | v = POP(); |
| 517 | else |
| 518 | v = NULL; |
| 519 | u = POP(); |
| 520 | x = apply_slice(u, v, w); |
| 521 | DECREF(u); |
| 522 | XDECREF(v); |
| 523 | XDECREF(w); |
| 524 | PUSH(x); |
| 525 | break; |
| 526 | |
| 527 | case STORE_SLICE+0: |
| 528 | case STORE_SLICE+1: |
| 529 | case STORE_SLICE+2: |
| 530 | case STORE_SLICE+3: |
| 531 | if ((opcode-STORE_SLICE) & 2) |
| 532 | w = POP(); |
| 533 | else |
| 534 | w = NULL; |
| 535 | if ((opcode-STORE_SLICE) & 1) |
| 536 | v = POP(); |
| 537 | else |
| 538 | v = NULL; |
| 539 | u = POP(); |
| 540 | t = POP(); |
| 541 | err = assign_slice(u, v, w, t); /* u[v:w] = t */ |
| 542 | DECREF(t); |
| 543 | DECREF(u); |
| 544 | XDECREF(v); |
| 545 | XDECREF(w); |
| 546 | break; |
| 547 | |
| 548 | case DELETE_SLICE+0: |
| 549 | case DELETE_SLICE+1: |
| 550 | case DELETE_SLICE+2: |
| 551 | case DELETE_SLICE+3: |
| 552 | if ((opcode-DELETE_SLICE) & 2) |
| 553 | w = POP(); |
| 554 | else |
| 555 | w = NULL; |
| 556 | if ((opcode-DELETE_SLICE) & 1) |
| 557 | v = POP(); |
| 558 | else |
| 559 | v = NULL; |
| 560 | u = POP(); |
| 561 | err = assign_slice(u, v, w, (object *)NULL); |
| 562 | /* del u[v:w] */ |
| 563 | DECREF(u); |
| 564 | XDECREF(v); |
| 565 | XDECREF(w); |
| 566 | break; |
| 567 | |
| 568 | case STORE_SUBSCR: |
| 569 | w = POP(); |
| 570 | v = POP(); |
| 571 | u = POP(); |
| 572 | /* v[w] = u */ |
| 573 | err = assign_subscript(v, w, u); |
| 574 | DECREF(u); |
| 575 | DECREF(v); |
| 576 | DECREF(w); |
| 577 | break; |
| 578 | |
| 579 | case DELETE_SUBSCR: |
| 580 | w = POP(); |
| 581 | v = POP(); |
| 582 | /* del v[w] */ |
| 583 | err = assign_subscript(v, w, (object *)NULL); |
| 584 | DECREF(v); |
| 585 | DECREF(w); |
| 586 | break; |
| 587 | |
| 588 | case PRINT_EXPR: |
| 589 | v = POP(); |
| 590 | fp = sysgetfile("stdout", stdout); |
| 591 | /* Print value except if procedure result */ |
| 592 | if (v != None) { |
| 593 | flushline(); |
| 594 | softspace(sysget("stdout"), 1); |
Guido van Rossum | 9093361 | 1991-06-07 16:10:43 +0000 | [diff] [blame] | 595 | err = printobject(v, fp, 0); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 596 | flushline(); |
| 597 | } |
| 598 | DECREF(v); |
| 599 | break; |
| 600 | |
| 601 | case PRINT_ITEM: |
| 602 | v = POP(); |
| 603 | fp = sysgetfile("stdout", stdout); |
| 604 | if (softspace(sysget("stdout"), 1)) |
| 605 | fprintf(fp, " "); |
| 606 | if (is_stringobject(v)) { |
| 607 | char *s = getstringvalue(v); |
| 608 | int len = getstringsize(v); |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 609 | fwrite(s, 1, len, fp); |
Guido van Rossum | 299a734 | 1992-03-04 16:39:08 +0000 | [diff] [blame] | 610 | if (ferror(fp)) { |
| 611 | err_errno(IOError); |
| 612 | err = -1; |
| 613 | } |
| 614 | else if (len > 0 && s[len-1] == '\n') |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 615 | softspace(sysget("stdout"), 0); |
| 616 | } |
| 617 | else { |
Guido van Rossum | 9093361 | 1991-06-07 16:10:43 +0000 | [diff] [blame] | 618 | err = printobject(v, fp, 0); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 619 | } |
| 620 | DECREF(v); |
| 621 | break; |
| 622 | |
| 623 | case PRINT_NEWLINE: |
| 624 | fp = sysgetfile("stdout", stdout); |
| 625 | fprintf(fp, "\n"); |
| 626 | softspace(sysget("stdout"), 0); |
| 627 | break; |
| 628 | |
| 629 | case BREAK_LOOP: |
| 630 | why = WHY_BREAK; |
| 631 | break; |
| 632 | |
| 633 | case RAISE_EXCEPTION: |
| 634 | v = POP(); |
| 635 | w = POP(); |
Guido van Rossum | 32c6cdf | 1991-12-10 13:52:46 +0000 | [diff] [blame] | 636 | /* A tuple is equivalent to its first element here */ |
| 637 | while (is_tupleobject(w)) { |
| 638 | u = w; |
| 639 | w = gettupleitem(u, 0); |
| 640 | DECREF(u); |
| 641 | } |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 642 | if (!is_stringobject(w)) |
| 643 | err_setstr(TypeError, |
| 644 | "exceptions must be strings"); |
| 645 | else |
| 646 | err_setval(w, v); |
| 647 | DECREF(v); |
| 648 | DECREF(w); |
| 649 | why = WHY_EXCEPTION; |
| 650 | break; |
| 651 | |
| 652 | case LOAD_LOCALS: |
| 653 | v = f->f_locals; |
| 654 | INCREF(v); |
| 655 | PUSH(v); |
| 656 | break; |
| 657 | |
| 658 | case RETURN_VALUE: |
| 659 | retval = POP(); |
| 660 | why = WHY_RETURN; |
| 661 | break; |
| 662 | |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 663 | case BUILD_FUNCTION: |
| 664 | v = POP(); |
| 665 | x = newfuncobject(v, f->f_globals); |
| 666 | DECREF(v); |
| 667 | PUSH(x); |
| 668 | break; |
| 669 | |
| 670 | case POP_BLOCK: |
| 671 | { |
| 672 | block *b = pop_block(f); |
| 673 | while (STACK_LEVEL() > b->b_level) { |
| 674 | v = POP(); |
| 675 | DECREF(v); |
| 676 | } |
| 677 | } |
| 678 | break; |
| 679 | |
| 680 | case END_FINALLY: |
| 681 | v = POP(); |
| 682 | if (is_intobject(v)) { |
| 683 | why = (enum why_code) getintvalue(v); |
| 684 | if (why == WHY_RETURN) |
| 685 | retval = POP(); |
| 686 | } |
| 687 | else if (is_stringobject(v)) { |
| 688 | w = POP(); |
| 689 | err_setval(v, w); |
| 690 | DECREF(w); |
| 691 | w = POP(); |
| 692 | tb_store(w); |
| 693 | DECREF(w); |
| 694 | why = WHY_RERAISE; |
| 695 | } |
| 696 | else if (v != None) { |
| 697 | err_setstr(SystemError, |
| 698 | "'finally' pops bad exception"); |
| 699 | why = WHY_EXCEPTION; |
| 700 | } |
| 701 | DECREF(v); |
| 702 | break; |
| 703 | |
| 704 | case BUILD_CLASS: |
| 705 | w = POP(); |
| 706 | v = POP(); |
| 707 | x = build_class(v, w); |
| 708 | PUSH(x); |
| 709 | DECREF(v); |
| 710 | DECREF(w); |
| 711 | break; |
| 712 | |
| 713 | case STORE_NAME: |
| 714 | w = GETNAMEV(oparg); |
| 715 | v = POP(); |
| 716 | err = dict2insert(f->f_locals, w, v); |
| 717 | DECREF(v); |
| 718 | break; |
| 719 | |
| 720 | case DELETE_NAME: |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 721 | w = GETNAMEV(oparg); |
| 722 | if ((err = dict2remove(f->f_locals, w)) != 0) |
| 723 | err_setstr(NameError, getstringvalue(w)); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 724 | break; |
| 725 | |
Guido van Rossum | 6a3f9a8 | 1992-01-14 18:29:20 +0000 | [diff] [blame] | 726 | case UNPACK_VARARG: |
| 727 | if (EMPTY()) { |
| 728 | err_setstr(TypeError, |
| 729 | "no argument list"); |
| 730 | why = WHY_EXCEPTION; |
| 731 | break; |
| 732 | } |
| 733 | v = POP(); |
| 734 | if (!is_tupleobject(v)) { |
| 735 | err_setstr(TypeError, |
| 736 | "bad argument list"); |
| 737 | why = WHY_EXCEPTION; |
| 738 | } |
| 739 | else if (gettuplesize(v) < oparg) { |
| 740 | err_setstr(TypeError, |
| 741 | "not enough arguments"); |
| 742 | why = WHY_EXCEPTION; |
| 743 | } |
| 744 | else if (oparg == 0) { |
| 745 | PUSH(v); |
| 746 | break; |
| 747 | } |
| 748 | else { |
| 749 | x = gettupleslice(v, oparg, gettuplesize(v)); |
| 750 | if (x != NULL) { |
| 751 | PUSH(x); |
| 752 | for (; --oparg >= 0; ) { |
| 753 | w = gettupleitem(v, oparg); |
| 754 | INCREF(w); |
| 755 | PUSH(w); |
| 756 | } |
| 757 | } |
| 758 | } |
| 759 | DECREF(v); |
| 760 | break; |
| 761 | |
Guido van Rossum | 9c7b861 | 1991-12-16 13:04:47 +0000 | [diff] [blame] | 762 | case UNPACK_ARG: |
| 763 | /* Implement various compatibility hacks: |
| 764 | (a) f(a,b,...) should accept f((1,2,...)) |
| 765 | (b) f((a,b,...)) should accept f(1,2,...) |
| 766 | (c) f(self,(a,b,...)) should accept f(x,1,2,...) |
| 767 | */ |
| 768 | { |
| 769 | int n; |
| 770 | if (EMPTY()) { |
| 771 | err_setstr(TypeError, |
| 772 | "no argument list"); |
| 773 | why = WHY_EXCEPTION; |
| 774 | break; |
| 775 | } |
| 776 | v = POP(); |
| 777 | if (!is_tupleobject(v)) { |
| 778 | err_setstr(TypeError, |
| 779 | "bad argument list"); |
| 780 | why = WHY_EXCEPTION; |
| 781 | break; |
| 782 | } |
| 783 | n = gettuplesize(v); |
| 784 | if (n == 1 && oparg != 1) { |
| 785 | /* Rule (a) */ |
| 786 | w = gettupleitem(v, 0); |
| 787 | if (is_tupleobject(w)) { |
| 788 | INCREF(w); |
| 789 | DECREF(v); |
| 790 | v = w; |
| 791 | n = gettuplesize(v); |
| 792 | } |
| 793 | } |
| 794 | else if (n != 1 && oparg == 1) { |
| 795 | /* Rule (b) */ |
| 796 | PUSH(v); |
| 797 | break; |
| 798 | /* Don't fall through */ |
| 799 | } |
| 800 | else if (n > 2 && oparg == 2) { |
| 801 | /* Rule (c) */ |
| 802 | int i; |
| 803 | w = newtupleobject(n-1); |
| 804 | u = newtupleobject(2); |
| 805 | if (u == NULL || w == NULL) { |
| 806 | XDECREF(w); |
| 807 | XDECREF(u); |
| 808 | DECREF(v); |
| 809 | why = WHY_EXCEPTION; |
| 810 | break; |
| 811 | } |
| 812 | t = gettupleitem(v, 0); |
| 813 | INCREF(t); |
| 814 | settupleitem(u, 0, t); |
| 815 | for (i = 1; i < n; i++) { |
| 816 | t = gettupleitem(v, i); |
| 817 | INCREF(t); |
| 818 | settupleitem(w, i-1, t); |
| 819 | } |
| 820 | settupleitem(u, 1, w); |
| 821 | DECREF(v); |
| 822 | v = u; |
| 823 | n = 2; |
| 824 | } |
| 825 | if (n != oparg) { |
| 826 | err_setstr(TypeError, |
| 827 | "arg count mismatch"); |
| 828 | why = WHY_EXCEPTION; |
| 829 | DECREF(v); |
| 830 | break; |
| 831 | } |
| 832 | PUSH(v); |
| 833 | } |
| 834 | /* Fall through */ |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 835 | case UNPACK_TUPLE: |
| 836 | v = POP(); |
| 837 | if (!is_tupleobject(v)) { |
| 838 | err_setstr(TypeError, "unpack non-tuple"); |
| 839 | why = WHY_EXCEPTION; |
| 840 | } |
| 841 | else if (gettuplesize(v) != oparg) { |
Guido van Rossum | 32c6cdf | 1991-12-10 13:52:46 +0000 | [diff] [blame] | 842 | err_setstr(ValueError, |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 843 | "unpack tuple of wrong size"); |
| 844 | why = WHY_EXCEPTION; |
| 845 | } |
| 846 | else { |
| 847 | for (; --oparg >= 0; ) { |
| 848 | w = gettupleitem(v, oparg); |
| 849 | INCREF(w); |
| 850 | PUSH(w); |
| 851 | } |
| 852 | } |
| 853 | DECREF(v); |
| 854 | break; |
| 855 | |
| 856 | case UNPACK_LIST: |
| 857 | v = POP(); |
| 858 | if (!is_listobject(v)) { |
| 859 | err_setstr(TypeError, "unpack non-list"); |
| 860 | why = WHY_EXCEPTION; |
| 861 | } |
| 862 | else if (getlistsize(v) != oparg) { |
Guido van Rossum | 32c6cdf | 1991-12-10 13:52:46 +0000 | [diff] [blame] | 863 | err_setstr(ValueError, |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 864 | "unpack list of wrong size"); |
| 865 | why = WHY_EXCEPTION; |
| 866 | } |
| 867 | else { |
| 868 | for (; --oparg >= 0; ) { |
| 869 | w = getlistitem(v, oparg); |
| 870 | INCREF(w); |
| 871 | PUSH(w); |
| 872 | } |
| 873 | } |
| 874 | DECREF(v); |
| 875 | break; |
| 876 | |
| 877 | case STORE_ATTR: |
| 878 | name = GETNAME(oparg); |
| 879 | v = POP(); |
| 880 | u = POP(); |
| 881 | err = setattr(v, name, u); /* v.name = u */ |
| 882 | DECREF(v); |
| 883 | DECREF(u); |
| 884 | break; |
| 885 | |
| 886 | case DELETE_ATTR: |
| 887 | name = GETNAME(oparg); |
| 888 | v = POP(); |
| 889 | err = setattr(v, name, (object *)NULL); |
| 890 | /* del v.name */ |
| 891 | DECREF(v); |
| 892 | break; |
| 893 | |
Guido van Rossum | 32c6cdf | 1991-12-10 13:52:46 +0000 | [diff] [blame] | 894 | case STORE_GLOBAL: |
| 895 | w = GETNAMEV(oparg); |
| 896 | v = POP(); |
| 897 | err = dict2insert(f->f_globals, w, v); |
| 898 | DECREF(v); |
| 899 | break; |
| 900 | |
| 901 | case DELETE_GLOBAL: |
| 902 | w = GETNAMEV(oparg); |
| 903 | if ((err = dict2remove(f->f_globals, w)) != 0) |
| 904 | err_setstr(NameError, getstringvalue(w)); |
| 905 | break; |
| 906 | |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 907 | case LOAD_CONST: |
| 908 | x = GETCONST(oparg); |
| 909 | INCREF(x); |
| 910 | PUSH(x); |
| 911 | break; |
| 912 | |
| 913 | case LOAD_NAME: |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 914 | w = GETNAMEV(oparg); |
| 915 | x = dict2lookup(f->f_locals, w); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 916 | if (x == NULL) { |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 917 | err_clear(); |
| 918 | x = dict2lookup(f->f_globals, w); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 919 | if (x == NULL) { |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 920 | err_clear(); |
| 921 | x = getbuiltin(w); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 922 | if (x == NULL) { |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 923 | err_setstr(NameError, |
| 924 | getstringvalue(w)); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 925 | break; |
| 926 | } |
| 927 | } |
| 928 | } |
| 929 | INCREF(x); |
| 930 | PUSH(x); |
| 931 | break; |
| 932 | |
| 933 | case LOAD_GLOBAL: |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 934 | w = GETNAMEV(oparg); |
| 935 | x = dict2lookup(f->f_globals, w); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 936 | if (x == NULL) { |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 937 | err_clear(); |
| 938 | x = getbuiltin(w); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 939 | if (x == NULL) { |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 940 | err_setstr(NameError, |
| 941 | getstringvalue(w)); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 942 | break; |
| 943 | } |
| 944 | } |
| 945 | INCREF(x); |
| 946 | PUSH(x); |
| 947 | break; |
| 948 | |
| 949 | case LOAD_LOCAL: |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 950 | w = GETNAMEV(oparg); |
| 951 | x = dict2lookup(f->f_locals, w); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 952 | if (x == NULL) { |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 953 | err_setstr(NameError, getstringvalue(w)); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 954 | break; |
| 955 | } |
| 956 | INCREF(x); |
| 957 | PUSH(x); |
| 958 | break; |
| 959 | |
| 960 | case BUILD_TUPLE: |
| 961 | x = newtupleobject(oparg); |
| 962 | if (x != NULL) { |
| 963 | for (; --oparg >= 0;) { |
| 964 | w = POP(); |
| 965 | err = settupleitem(x, oparg, w); |
| 966 | if (err != 0) |
| 967 | break; |
| 968 | } |
| 969 | PUSH(x); |
| 970 | } |
| 971 | break; |
| 972 | |
| 973 | case BUILD_LIST: |
| 974 | x = newlistobject(oparg); |
| 975 | if (x != NULL) { |
| 976 | for (; --oparg >= 0;) { |
| 977 | w = POP(); |
| 978 | err = setlistitem(x, oparg, w); |
| 979 | if (err != 0) |
| 980 | break; |
| 981 | } |
| 982 | PUSH(x); |
| 983 | } |
| 984 | break; |
| 985 | |
| 986 | case BUILD_MAP: |
| 987 | x = newdictobject(); |
| 988 | PUSH(x); |
| 989 | break; |
| 990 | |
| 991 | case LOAD_ATTR: |
| 992 | name = GETNAME(oparg); |
| 993 | v = POP(); |
| 994 | x = getattr(v, name); |
| 995 | DECREF(v); |
| 996 | PUSH(x); |
| 997 | break; |
| 998 | |
| 999 | case COMPARE_OP: |
| 1000 | w = POP(); |
| 1001 | v = POP(); |
Guido van Rossum | 5b7313a | 1992-04-06 13:24:57 +0000 | [diff] [blame] | 1002 | x = cmp_outcome(oparg, v, w); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1003 | DECREF(v); |
| 1004 | DECREF(w); |
| 1005 | PUSH(x); |
| 1006 | break; |
| 1007 | |
| 1008 | case IMPORT_NAME: |
| 1009 | name = GETNAME(oparg); |
| 1010 | x = import_module(name); |
| 1011 | XINCREF(x); |
| 1012 | PUSH(x); |
| 1013 | break; |
| 1014 | |
| 1015 | case IMPORT_FROM: |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 1016 | w = GETNAMEV(oparg); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1017 | v = TOP(); |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 1018 | err = import_from(f->f_locals, v, w); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1019 | break; |
| 1020 | |
| 1021 | case JUMP_FORWARD: |
| 1022 | JUMPBY(oparg); |
| 1023 | break; |
| 1024 | |
| 1025 | case JUMP_IF_FALSE: |
| 1026 | if (!testbool(TOP())) |
| 1027 | JUMPBY(oparg); |
| 1028 | break; |
| 1029 | |
| 1030 | case JUMP_IF_TRUE: |
| 1031 | if (testbool(TOP())) |
| 1032 | JUMPBY(oparg); |
| 1033 | break; |
| 1034 | |
| 1035 | case JUMP_ABSOLUTE: |
| 1036 | JUMPTO(oparg); |
| 1037 | break; |
| 1038 | |
| 1039 | case FOR_LOOP: |
| 1040 | /* for v in s: ... |
| 1041 | On entry: stack contains s, i. |
| 1042 | On exit: stack contains s, i+1, s[i]; |
| 1043 | but if loop exhausted: |
| 1044 | s, i are popped, and we jump */ |
| 1045 | w = POP(); /* Loop index */ |
| 1046 | v = POP(); /* Sequence object */ |
| 1047 | u = loop_subscript(v, w); |
| 1048 | if (u != NULL) { |
| 1049 | PUSH(v); |
| 1050 | x = newintobject(getintvalue(w)+1); |
| 1051 | PUSH(x); |
| 1052 | DECREF(w); |
| 1053 | PUSH(u); |
| 1054 | } |
| 1055 | else { |
| 1056 | DECREF(v); |
| 1057 | DECREF(w); |
| 1058 | /* A NULL can mean "s exhausted" |
| 1059 | but also an error: */ |
| 1060 | if (err_occurred()) |
| 1061 | why = WHY_EXCEPTION; |
| 1062 | else |
| 1063 | JUMPBY(oparg); |
| 1064 | } |
| 1065 | break; |
| 1066 | |
| 1067 | case SETUP_LOOP: |
| 1068 | case SETUP_EXCEPT: |
| 1069 | case SETUP_FINALLY: |
| 1070 | setup_block(f, opcode, INSTR_OFFSET() + oparg, |
| 1071 | STACK_LEVEL()); |
| 1072 | break; |
| 1073 | |
| 1074 | case SET_LINENO: |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1075 | #ifdef LLTRACE |
| 1076 | if (lltrace) |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1077 | printf("--- Line %d ---\n", oparg); |
| 1078 | #endif |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1079 | f->f_lineno = oparg; |
| 1080 | if (trace != NULL) { |
| 1081 | /* Trace each line of code reached */ |
| 1082 | f->f_lasti = INSTR_OFFSET(); |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1083 | err = call_trace(&trace, &trace, |
| 1084 | f, "line", None); |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1085 | } |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1086 | break; |
| 1087 | |
| 1088 | default: |
| 1089 | fprintf(stderr, |
| 1090 | "XXX lineno: %d, opcode: %d\n", |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1091 | f->f_lineno, opcode); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1092 | err_setstr(SystemError, "eval_code: unknown opcode"); |
| 1093 | why = WHY_EXCEPTION; |
| 1094 | break; |
| 1095 | |
| 1096 | } /* switch */ |
| 1097 | |
| 1098 | on_error: |
| 1099 | |
| 1100 | /* Quickly continue if no error occurred */ |
| 1101 | |
| 1102 | if (why == WHY_NOT) { |
| 1103 | if (err == 0 && x != NULL) |
| 1104 | continue; /* Normal, fast path */ |
| 1105 | why = WHY_EXCEPTION; |
| 1106 | x = None; |
| 1107 | err = 0; |
| 1108 | } |
| 1109 | |
Guido van Rossum | 801dcae | 1992-04-08 11:32:32 +0000 | [diff] [blame] | 1110 | #ifdef CHECKEXC |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1111 | /* Double-check exception status */ |
| 1112 | |
| 1113 | if (why == WHY_EXCEPTION || why == WHY_RERAISE) { |
| 1114 | if (!err_occurred()) { |
| 1115 | fprintf(stderr, "XXX ghost error\n"); |
| 1116 | err_setstr(SystemError, "ghost error"); |
| 1117 | why = WHY_EXCEPTION; |
| 1118 | } |
| 1119 | } |
| 1120 | else { |
| 1121 | if (err_occurred()) { |
| 1122 | fprintf(stderr, "XXX undetected error\n"); |
| 1123 | why = WHY_EXCEPTION; |
| 1124 | } |
| 1125 | } |
| 1126 | #endif |
| 1127 | |
| 1128 | /* Log traceback info if this is a real exception */ |
| 1129 | |
| 1130 | if (why == WHY_EXCEPTION) { |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1131 | f->f_lasti = INSTR_OFFSET() - 1; |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1132 | if (HAS_ARG(opcode)) |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1133 | f->f_lasti -= 2; |
| 1134 | tb_here(f); |
| 1135 | |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1136 | if (trace) |
| 1137 | call_exc_trace(&trace, &trace, f); |
| 1138 | if (sys_profile) |
| 1139 | call_exc_trace(&sys_profile, (object**)0, f); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1140 | } |
| 1141 | |
| 1142 | /* For the rest, treat WHY_RERAISE as WHY_EXCEPTION */ |
| 1143 | |
| 1144 | if (why == WHY_RERAISE) |
| 1145 | why = WHY_EXCEPTION; |
| 1146 | |
| 1147 | /* Unwind stacks if a (pseudo) exception occurred */ |
| 1148 | |
| 1149 | while (why != WHY_NOT && f->f_iblock > 0) { |
| 1150 | block *b = pop_block(f); |
| 1151 | while (STACK_LEVEL() > b->b_level) { |
| 1152 | v = POP(); |
| 1153 | XDECREF(v); |
| 1154 | } |
| 1155 | if (b->b_type == SETUP_LOOP && why == WHY_BREAK) { |
| 1156 | why = WHY_NOT; |
| 1157 | JUMPTO(b->b_handler); |
| 1158 | break; |
| 1159 | } |
| 1160 | if (b->b_type == SETUP_FINALLY || |
| 1161 | b->b_type == SETUP_EXCEPT && |
| 1162 | why == WHY_EXCEPTION) { |
| 1163 | if (why == WHY_EXCEPTION) { |
| 1164 | object *exc, *val; |
| 1165 | err_get(&exc, &val); |
| 1166 | if (val == NULL) { |
| 1167 | val = None; |
| 1168 | INCREF(val); |
| 1169 | } |
| 1170 | v = tb_fetch(); |
| 1171 | /* Make the raw exception data |
| 1172 | available to the handler, |
| 1173 | so a program can emulate the |
| 1174 | Python main loop. Don't do |
| 1175 | this for 'finally'. */ |
| 1176 | if (b->b_type == SETUP_EXCEPT) { |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1177 | sysset("exc_traceback", v); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1178 | sysset("exc_value", val); |
| 1179 | sysset("exc_type", exc); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1180 | } |
| 1181 | PUSH(v); |
| 1182 | PUSH(val); |
| 1183 | PUSH(exc); |
| 1184 | } |
| 1185 | else { |
| 1186 | if (why == WHY_RETURN) |
| 1187 | PUSH(retval); |
| 1188 | v = newintobject((long)why); |
| 1189 | PUSH(v); |
| 1190 | } |
| 1191 | why = WHY_NOT; |
| 1192 | JUMPTO(b->b_handler); |
| 1193 | break; |
| 1194 | } |
| 1195 | } /* unwind stack */ |
| 1196 | |
| 1197 | /* End the loop if we still have an error (or return) */ |
| 1198 | |
| 1199 | if (why != WHY_NOT) |
| 1200 | break; |
| 1201 | |
| 1202 | } /* main loop */ |
| 1203 | |
| 1204 | /* Pop remaining stack entries */ |
| 1205 | |
| 1206 | while (!EMPTY()) { |
| 1207 | v = POP(); |
| 1208 | XDECREF(v); |
| 1209 | } |
| 1210 | |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1211 | if (why != WHY_RETURN) |
| 1212 | retval = NULL; |
| 1213 | |
| 1214 | if (trace) { |
| 1215 | if (why == WHY_RETURN) { |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1216 | if (call_trace(&trace, &trace, f, "return", retval)) { |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1217 | XDECREF(retval); |
| 1218 | retval = NULL; |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1219 | why = WHY_EXCEPTION; |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1220 | } |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1221 | } |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1222 | XDECREF(trace); |
| 1223 | } |
| 1224 | |
| 1225 | if (sys_profile && why == WHY_RETURN) { |
| 1226 | if (call_trace(&sys_profile, (object**)0, |
| 1227 | f, "return", retval)) { |
| 1228 | XDECREF(retval); |
| 1229 | retval = NULL; |
| 1230 | why = WHY_EXCEPTION; |
| 1231 | } |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1232 | } |
| 1233 | |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1234 | /* Restore previous frame and release the current one */ |
| 1235 | |
| 1236 | current_frame = f->f_back; |
| 1237 | DECREF(f); |
| 1238 | |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1239 | return retval; |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1240 | } |
| 1241 | |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1242 | #ifdef LLTRACE |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1243 | static int |
| 1244 | prtrace(v, str) |
| 1245 | object *v; |
| 1246 | char *str; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1247 | { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1248 | printf("%s ", str); |
Guido van Rossum | 9093361 | 1991-06-07 16:10:43 +0000 | [diff] [blame] | 1249 | if (printobject(v, stdout, 0) != 0) |
| 1250 | err_clear(); /* Don't know what else to do */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1251 | printf("\n"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1252 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1253 | #endif |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1254 | |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1255 | static void |
| 1256 | call_exc_trace(p_trace, p_newtrace, f) |
| 1257 | object **p_trace, **p_newtrace; |
| 1258 | frameobject *f; |
| 1259 | { |
| 1260 | object *type, *value, *traceback, *arg; |
| 1261 | int err; |
| 1262 | err_get(&type, &value); |
Guido van Rossum | bd9ccca | 1992-04-09 14:58:08 +0000 | [diff] [blame] | 1263 | if (value == NULL) { |
| 1264 | value = None; |
| 1265 | INCREF(value); |
| 1266 | } |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1267 | traceback = tb_fetch(); |
| 1268 | arg = newtupleobject(3); |
Guido van Rossum | eee3fd4 | 1992-04-05 14:18:13 +0000 | [diff] [blame] | 1269 | if (arg == NULL) |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1270 | goto cleanup; |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1271 | settupleitem(arg, 0, type); |
| 1272 | settupleitem(arg, 1, value); |
| 1273 | settupleitem(arg, 2, traceback); |
| 1274 | err = call_trace(p_trace, p_newtrace, f, "exception", arg); |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1275 | if (!err) { |
Guido van Rossum | eee3fd4 | 1992-04-05 14:18:13 +0000 | [diff] [blame] | 1276 | cleanup: |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1277 | /* Restore original exception */ |
| 1278 | err_setval(type, value); |
| 1279 | tb_store(traceback); |
| 1280 | } |
Guido van Rossum | eee3fd4 | 1992-04-05 14:18:13 +0000 | [diff] [blame] | 1281 | XDECREF(arg); |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1282 | } |
| 1283 | |
| 1284 | static int |
| 1285 | call_trace(p_trace, p_newtrace, f, msg, arg) |
| 1286 | object **p_trace; /* in/out; may not be NULL; |
| 1287 | may not point to NULL variable initially */ |
| 1288 | object **p_newtrace; /* in/out; may be NULL; |
| 1289 | may point to NULL variable; |
| 1290 | may be same variable as p_newtrace */ |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1291 | frameobject *f; |
| 1292 | char *msg; |
| 1293 | object *arg; |
| 1294 | { |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1295 | object *arglist, *what; |
| 1296 | object *res = NULL; |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1297 | static int tracing = 0; |
| 1298 | |
| 1299 | if (tracing) { |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1300 | /* Don't do recursive traces */ |
| 1301 | if (p_newtrace) { |
| 1302 | XDECREF(*p_newtrace); |
| 1303 | *p_newtrace = NULL; |
| 1304 | } |
| 1305 | return 0; |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1306 | } |
| 1307 | |
| 1308 | arglist = newtupleobject(3); |
| 1309 | if (arglist == NULL) |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1310 | goto cleanup; |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1311 | what = newstringobject(msg); |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1312 | if (what == NULL) |
| 1313 | goto cleanup; |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1314 | INCREF(f); |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1315 | settupleitem(arglist, 0, (object *)f); |
| 1316 | settupleitem(arglist, 1, what); |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1317 | if (arg == NULL) |
| 1318 | arg = None; |
| 1319 | INCREF(arg); |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1320 | settupleitem(arglist, 2, arg); |
| 1321 | tracing++; |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1322 | res = call_object(*p_trace, arglist); |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1323 | tracing--; |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1324 | cleanup: |
| 1325 | XDECREF(arglist); |
| 1326 | if (res == NULL) { |
| 1327 | /* The trace proc raised an exception */ |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1328 | tb_here(f); |
Guido van Rossum | eee3fd4 | 1992-04-05 14:18:13 +0000 | [diff] [blame] | 1329 | DECREF(*p_trace); |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1330 | *p_trace = NULL; |
| 1331 | if (p_newtrace) { |
| 1332 | XDECREF(*p_newtrace); |
| 1333 | *p_newtrace = NULL; |
| 1334 | } |
Guido van Rossum | eee3fd4 | 1992-04-05 14:18:13 +0000 | [diff] [blame] | 1335 | return -1; |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1336 | } |
| 1337 | else { |
| 1338 | if (p_newtrace) { |
| 1339 | XDECREF(*p_newtrace); |
| 1340 | if (res == None) |
| 1341 | *p_newtrace = NULL; |
| 1342 | else { |
| 1343 | INCREF(res); |
| 1344 | *p_newtrace = res; |
| 1345 | } |
| 1346 | } |
| 1347 | DECREF(res); |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1348 | return 0; |
Guido van Rossum | eee3fd4 | 1992-04-05 14:18:13 +0000 | [diff] [blame] | 1349 | } |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1350 | } |
| 1351 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1352 | object * |
| 1353 | getlocals() |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1354 | { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1355 | if (current_frame == NULL) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1356 | return NULL; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1357 | else |
| 1358 | return current_frame->f_locals; |
| 1359 | } |
| 1360 | |
| 1361 | object * |
| 1362 | getglobals() |
| 1363 | { |
| 1364 | if (current_frame == NULL) |
| 1365 | return NULL; |
| 1366 | else |
| 1367 | return current_frame->f_globals; |
| 1368 | } |
| 1369 | |
| 1370 | void |
| 1371 | printtraceback(fp) |
| 1372 | FILE *fp; |
| 1373 | { |
| 1374 | object *v = tb_fetch(); |
| 1375 | if (v != NULL) { |
| 1376 | fprintf(fp, "Stack backtrace (innermost last):\n"); |
| 1377 | tb_print(v, fp); |
| 1378 | DECREF(v); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1379 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1380 | } |
| 1381 | |
| 1382 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1383 | void |
| 1384 | flushline() |
| 1385 | { |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1386 | if (softspace(sysget("stdout"), 0)) |
| 1387 | fprintf(sysgetfile("stdout", stdout), "\n"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1388 | } |
| 1389 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1390 | |
| 1391 | /* Test a value used as condition, e.g., in a for or if statement */ |
| 1392 | |
| 1393 | static int |
| 1394 | testbool(v) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1395 | object *v; |
| 1396 | { |
Guido van Rossum | 4965bc8 | 1991-05-14 11:51:49 +0000 | [diff] [blame] | 1397 | if (v == None) |
| 1398 | return 0; |
| 1399 | if (v->ob_type->tp_as_number != NULL) |
| 1400 | return (*v->ob_type->tp_as_number->nb_nonzero)(v); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1401 | if (v->ob_type->tp_as_sequence != NULL) |
| 1402 | return (*v->ob_type->tp_as_sequence->sq_length)(v) != 0; |
| 1403 | if (v->ob_type->tp_as_mapping != NULL) |
| 1404 | return (*v->ob_type->tp_as_mapping->mp_length)(v) != 0; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1405 | /* All other objects are 'true' */ |
| 1406 | return 1; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1407 | } |
| 1408 | |
| 1409 | static object * |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 1410 | or(v, w) |
| 1411 | object *v, *w; |
| 1412 | { |
| 1413 | if (v->ob_type->tp_as_number != NULL) { |
| 1414 | object *x; |
| 1415 | object * (*f) FPROTO((object *, object *)); |
| 1416 | if (coerce(&v, &w) != 0) |
| 1417 | return NULL; |
| 1418 | if ((f = v->ob_type->tp_as_number->nb_or) != NULL) |
| 1419 | x = (*f)(v, w); |
| 1420 | DECREF(v); |
| 1421 | DECREF(w); |
| 1422 | if (f != NULL) |
| 1423 | return x; |
| 1424 | } |
| 1425 | err_setstr(TypeError, "bad operand type(s) for |"); |
| 1426 | return NULL; |
| 1427 | } |
| 1428 | |
| 1429 | static object * |
| 1430 | xor(v, w) |
| 1431 | object *v, *w; |
| 1432 | { |
| 1433 | if (v->ob_type->tp_as_number != NULL) { |
| 1434 | object *x; |
| 1435 | object * (*f) FPROTO((object *, object *)); |
| 1436 | if (coerce(&v, &w) != 0) |
| 1437 | return NULL; |
| 1438 | if ((f = v->ob_type->tp_as_number->nb_xor) != NULL) |
| 1439 | x = (*f)(v, w); |
| 1440 | DECREF(v); |
| 1441 | DECREF(w); |
| 1442 | if (f != NULL) |
| 1443 | return x; |
| 1444 | } |
| 1445 | err_setstr(TypeError, "bad operand type(s) for ^"); |
| 1446 | return NULL; |
| 1447 | } |
| 1448 | |
| 1449 | static object * |
| 1450 | and(v, w) |
| 1451 | object *v, *w; |
| 1452 | { |
| 1453 | if (v->ob_type->tp_as_number != NULL) { |
| 1454 | object *x; |
| 1455 | object * (*f) FPROTO((object *, object *)); |
| 1456 | if (coerce(&v, &w) != 0) |
| 1457 | return NULL; |
| 1458 | if ((f = v->ob_type->tp_as_number->nb_and) != NULL) |
| 1459 | x = (*f)(v, w); |
| 1460 | DECREF(v); |
| 1461 | DECREF(w); |
| 1462 | if (f != NULL) |
| 1463 | return x; |
| 1464 | } |
| 1465 | err_setstr(TypeError, "bad operand type(s) for &"); |
| 1466 | return NULL; |
| 1467 | } |
| 1468 | |
| 1469 | static object * |
| 1470 | lshift(v, w) |
| 1471 | object *v, *w; |
| 1472 | { |
| 1473 | if (v->ob_type->tp_as_number != NULL) { |
| 1474 | object *x; |
| 1475 | object * (*f) FPROTO((object *, object *)); |
| 1476 | if (coerce(&v, &w) != 0) |
| 1477 | return NULL; |
| 1478 | if ((f = v->ob_type->tp_as_number->nb_lshift) != NULL) |
| 1479 | x = (*f)(v, w); |
| 1480 | DECREF(v); |
| 1481 | DECREF(w); |
| 1482 | if (f != NULL) |
| 1483 | return x; |
| 1484 | } |
| 1485 | err_setstr(TypeError, "bad operand type(s) for <<"); |
| 1486 | return NULL; |
| 1487 | } |
| 1488 | |
| 1489 | static object * |
| 1490 | rshift(v, w) |
| 1491 | object *v, *w; |
| 1492 | { |
| 1493 | if (v->ob_type->tp_as_number != NULL) { |
| 1494 | object *x; |
| 1495 | object * (*f) FPROTO((object *, object *)); |
| 1496 | if (coerce(&v, &w) != 0) |
| 1497 | return NULL; |
| 1498 | if ((f = v->ob_type->tp_as_number->nb_rshift) != NULL) |
| 1499 | x = (*f)(v, w); |
| 1500 | DECREF(v); |
| 1501 | DECREF(w); |
| 1502 | if (f != NULL) |
| 1503 | return x; |
| 1504 | } |
| 1505 | err_setstr(TypeError, "bad operand type(s) for >>"); |
| 1506 | return NULL; |
| 1507 | } |
| 1508 | |
| 1509 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1510 | add(v, w) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1511 | object *v, *w; |
| 1512 | { |
Guido van Rossum | 89d55ca | 1991-07-01 18:43:13 +0000 | [diff] [blame] | 1513 | if (v->ob_type->tp_as_number != NULL) { |
| 1514 | object *x; |
| 1515 | if (coerce(&v, &w) != 0) |
| 1516 | return NULL; |
| 1517 | x = (*v->ob_type->tp_as_number->nb_add)(v, w); |
| 1518 | DECREF(v); |
| 1519 | DECREF(w); |
| 1520 | return x; |
| 1521 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1522 | else if (v->ob_type->tp_as_sequence != NULL) |
Guido van Rossum | 89d55ca | 1991-07-01 18:43:13 +0000 | [diff] [blame] | 1523 | return (*v->ob_type->tp_as_sequence->sq_concat)(v, w); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1524 | else { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1525 | err_setstr(TypeError, "+ not supported by operands"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1526 | return NULL; |
| 1527 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1528 | } |
| 1529 | |
| 1530 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1531 | sub(v, w) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1532 | object *v, *w; |
| 1533 | { |
Guido van Rossum | 89d55ca | 1991-07-01 18:43:13 +0000 | [diff] [blame] | 1534 | if (v->ob_type->tp_as_number != NULL) { |
| 1535 | object *x; |
| 1536 | if (coerce(&v, &w) != 0) |
| 1537 | return NULL; |
| 1538 | x = (*v->ob_type->tp_as_number->nb_subtract)(v, w); |
| 1539 | DECREF(v); |
| 1540 | DECREF(w); |
| 1541 | return x; |
| 1542 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1543 | err_setstr(TypeError, "bad operand type(s) for -"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1544 | return NULL; |
| 1545 | } |
| 1546 | |
| 1547 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1548 | mul(v, w) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1549 | object *v, *w; |
| 1550 | { |
| 1551 | typeobject *tp; |
| 1552 | if (is_intobject(v) && w->ob_type->tp_as_sequence != NULL) { |
| 1553 | /* int*sequence -- swap v and w */ |
| 1554 | object *tmp = v; |
| 1555 | v = w; |
| 1556 | w = tmp; |
| 1557 | } |
| 1558 | tp = v->ob_type; |
Guido van Rossum | 89d55ca | 1991-07-01 18:43:13 +0000 | [diff] [blame] | 1559 | if (tp->tp_as_number != NULL) { |
| 1560 | object *x; |
| 1561 | if (coerce(&v, &w) != 0) |
| 1562 | return NULL; |
| 1563 | x = (*v->ob_type->tp_as_number->nb_multiply)(v, w); |
| 1564 | DECREF(v); |
| 1565 | DECREF(w); |
| 1566 | return x; |
| 1567 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1568 | if (tp->tp_as_sequence != NULL) { |
| 1569 | if (!is_intobject(w)) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1570 | err_setstr(TypeError, |
| 1571 | "can't multiply sequence with non-int"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1572 | return NULL; |
| 1573 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1574 | return (*tp->tp_as_sequence->sq_repeat) |
| 1575 | (v, (int)getintvalue(w)); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1576 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1577 | err_setstr(TypeError, "bad operand type(s) for *"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1578 | return NULL; |
| 1579 | } |
| 1580 | |
| 1581 | static object * |
Guido van Rossum | 40d0b7e | 1990-12-20 23:03:11 +0000 | [diff] [blame] | 1582 | divide(v, w) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1583 | object *v, *w; |
| 1584 | { |
Guido van Rossum | 89d55ca | 1991-07-01 18:43:13 +0000 | [diff] [blame] | 1585 | if (v->ob_type->tp_as_number != NULL) { |
| 1586 | object *x; |
| 1587 | if (coerce(&v, &w) != 0) |
| 1588 | return NULL; |
| 1589 | x = (*v->ob_type->tp_as_number->nb_divide)(v, w); |
| 1590 | DECREF(v); |
| 1591 | DECREF(w); |
| 1592 | return x; |
| 1593 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1594 | err_setstr(TypeError, "bad operand type(s) for /"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1595 | return NULL; |
| 1596 | } |
| 1597 | |
| 1598 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1599 | rem(v, w) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1600 | object *v, *w; |
| 1601 | { |
Guido van Rossum | 89d55ca | 1991-07-01 18:43:13 +0000 | [diff] [blame] | 1602 | if (v->ob_type->tp_as_number != NULL) { |
| 1603 | object *x; |
| 1604 | if (coerce(&v, &w) != 0) |
| 1605 | return NULL; |
| 1606 | x = (*v->ob_type->tp_as_number->nb_remainder)(v, w); |
| 1607 | DECREF(v); |
| 1608 | DECREF(w); |
| 1609 | return x; |
| 1610 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1611 | err_setstr(TypeError, "bad operand type(s) for %"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1612 | return NULL; |
| 1613 | } |
| 1614 | |
| 1615 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1616 | neg(v) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1617 | object *v; |
| 1618 | { |
| 1619 | if (v->ob_type->tp_as_number != NULL) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1620 | return (*v->ob_type->tp_as_number->nb_negative)(v); |
| 1621 | err_setstr(TypeError, "bad operand type(s) for unary -"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1622 | return NULL; |
| 1623 | } |
| 1624 | |
| 1625 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1626 | pos(v) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1627 | object *v; |
| 1628 | { |
| 1629 | if (v->ob_type->tp_as_number != NULL) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1630 | return (*v->ob_type->tp_as_number->nb_positive)(v); |
| 1631 | err_setstr(TypeError, "bad operand type(s) for unary +"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1632 | return NULL; |
| 1633 | } |
| 1634 | |
| 1635 | static object * |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 1636 | invert(v) |
| 1637 | object *v; |
| 1638 | { |
Guido van Rossum | 9b1d33b | 1992-02-11 15:56:02 +0000 | [diff] [blame] | 1639 | object * (*f) FPROTO((object *)); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 1640 | if (v->ob_type->tp_as_number != NULL && |
| 1641 | (f = v->ob_type->tp_as_number->nb_invert) != NULL) |
| 1642 | return (*f)(v); |
| 1643 | err_setstr(TypeError, "bad operand type(s) for unary ~"); |
| 1644 | return NULL; |
| 1645 | } |
| 1646 | |
| 1647 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1648 | not(v) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1649 | object *v; |
| 1650 | { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1651 | int outcome = testbool(v); |
| 1652 | object *w = outcome == 0 ? True : False; |
| 1653 | INCREF(w); |
| 1654 | return w; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1655 | } |
Guido van Rossum | 83bf35c | 1991-07-27 21:32:34 +0000 | [diff] [blame] | 1656 | /* External interface to call any callable object. The arg may be NULL. */ |
| 1657 | |
| 1658 | object * |
| 1659 | call_object(func, arg) |
| 1660 | object *func; |
| 1661 | object *arg; |
| 1662 | { |
| 1663 | if (is_instancemethodobject(func) || is_funcobject(func)) |
| 1664 | return call_function(func, arg); |
| 1665 | else |
| 1666 | return call_builtin(func, arg); |
| 1667 | } |
| 1668 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1669 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1670 | call_builtin(func, arg) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1671 | object *func; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1672 | object *arg; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1673 | { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1674 | if (is_methodobject(func)) { |
| 1675 | method meth = getmethod(func); |
| 1676 | object *self = getself(func); |
Guido van Rossum | 9c7b861 | 1991-12-16 13:04:47 +0000 | [diff] [blame] | 1677 | if (!getvarargs(func) && arg != NULL && is_tupleobject(arg)) { |
| 1678 | int size = gettuplesize(arg); |
| 1679 | if (size == 1) |
| 1680 | arg = gettupleitem(arg, 0); |
| 1681 | else if (size == 0) |
| 1682 | arg = NULL; |
| 1683 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1684 | return (*meth)(self, arg); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1685 | } |
| 1686 | if (is_classobject(func)) { |
Guido van Rossum | 9c7b861 | 1991-12-16 13:04:47 +0000 | [diff] [blame] | 1687 | if (arg != NULL && |
| 1688 | !(is_tupleobject(arg) && |
| 1689 | gettuplesize(arg) == 0)) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1690 | err_setstr(TypeError, |
| 1691 | "classobject() allows no arguments"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1692 | return NULL; |
| 1693 | } |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1694 | return newinstanceobject(func); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1695 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1696 | err_setstr(TypeError, "call of non-function"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1697 | return NULL; |
| 1698 | } |
| 1699 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1700 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1701 | call_function(func, arg) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1702 | object *func; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1703 | object *arg; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1704 | { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1705 | object *newarg = NULL; |
| 1706 | object *newlocals, *newglobals; |
| 1707 | object *co, *v; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1708 | |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1709 | if (is_instancemethodobject(func)) { |
Guido van Rossum | 9c7b861 | 1991-12-16 13:04:47 +0000 | [diff] [blame] | 1710 | int argcount; |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1711 | object *self = instancemethodgetself(func); |
| 1712 | func = instancemethodgetfunc(func); |
Guido van Rossum | 9c7b861 | 1991-12-16 13:04:47 +0000 | [diff] [blame] | 1713 | if (arg == NULL) |
| 1714 | argcount = 0; |
| 1715 | else if (is_tupleobject(arg)) |
| 1716 | argcount = gettuplesize(arg); |
| 1717 | else |
| 1718 | argcount = 1; |
| 1719 | newarg = newtupleobject(argcount + 1); |
| 1720 | if (newarg == NULL) |
| 1721 | return NULL; |
| 1722 | INCREF(self); |
| 1723 | settupleitem(newarg, 0, self); |
| 1724 | if (arg != NULL && !is_tupleobject(arg)) { |
| 1725 | INCREF(arg); |
| 1726 | settupleitem(newarg, 1, arg); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1727 | } |
| 1728 | else { |
Guido van Rossum | 9c7b861 | 1991-12-16 13:04:47 +0000 | [diff] [blame] | 1729 | int i; |
| 1730 | object *v; |
| 1731 | for (i = 0; i < argcount; i++) { |
| 1732 | v = gettupleitem(arg, i); |
| 1733 | XINCREF(v); |
| 1734 | settupleitem(newarg, i+1, v); |
| 1735 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1736 | } |
Guido van Rossum | 9c7b861 | 1991-12-16 13:04:47 +0000 | [diff] [blame] | 1737 | arg = newarg; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1738 | } |
| 1739 | else { |
| 1740 | if (!is_funcobject(func)) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1741 | err_setstr(TypeError, "call of non-function"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1742 | return NULL; |
| 1743 | } |
| 1744 | } |
| 1745 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1746 | co = getfunccode(func); |
| 1747 | if (co == NULL) { |
| 1748 | XDECREF(newarg); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1749 | return NULL; |
| 1750 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1751 | if (!is_codeobject(co)) { |
| 1752 | fprintf(stderr, "XXX Bad code\n"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1753 | abort(); |
| 1754 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1755 | newlocals = newdictobject(); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1756 | if (newlocals == NULL) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1757 | XDECREF(newarg); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1758 | return NULL; |
| 1759 | } |
| 1760 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1761 | newglobals = getfuncglobals(func); |
| 1762 | INCREF(newglobals); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1763 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1764 | v = eval_code((codeobject *)co, newglobals, newlocals, arg); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1765 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1766 | DECREF(newlocals); |
| 1767 | DECREF(newglobals); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1768 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1769 | XDECREF(newarg); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1770 | |
| 1771 | return v; |
| 1772 | } |
| 1773 | |
| 1774 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1775 | apply_subscript(v, w) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1776 | object *v, *w; |
| 1777 | { |
| 1778 | typeobject *tp = v->ob_type; |
| 1779 | if (tp->tp_as_sequence == NULL && tp->tp_as_mapping == NULL) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1780 | err_setstr(TypeError, "unsubscriptable object"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1781 | return NULL; |
| 1782 | } |
| 1783 | if (tp->tp_as_sequence != NULL) { |
| 1784 | int i; |
| 1785 | if (!is_intobject(w)) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1786 | err_setstr(TypeError, "sequence subscript not int"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1787 | return NULL; |
| 1788 | } |
| 1789 | i = getintvalue(w); |
Guido van Rossum | 98256aa | 1991-12-24 13:25:19 +0000 | [diff] [blame] | 1790 | if (i < 0) |
| 1791 | i += (*tp->tp_as_sequence->sq_length)(v); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1792 | return (*tp->tp_as_sequence->sq_item)(v, i); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1793 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1794 | return (*tp->tp_as_mapping->mp_subscript)(v, w); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1795 | } |
| 1796 | |
| 1797 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1798 | loop_subscript(v, w) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1799 | object *v, *w; |
| 1800 | { |
| 1801 | sequence_methods *sq = v->ob_type->tp_as_sequence; |
| 1802 | int i, n; |
| 1803 | if (sq == NULL) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1804 | err_setstr(TypeError, "loop over non-sequence"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1805 | return NULL; |
| 1806 | } |
| 1807 | i = getintvalue(w); |
| 1808 | n = (*sq->sq_length)(v); |
| 1809 | if (i >= n) |
| 1810 | return NULL; /* End of loop */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1811 | return (*sq->sq_item)(v, i); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1812 | } |
| 1813 | |
| 1814 | static int |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1815 | slice_index(v, isize, pi) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1816 | object *v; |
| 1817 | int isize; |
| 1818 | int *pi; |
| 1819 | { |
| 1820 | if (v != NULL) { |
| 1821 | if (!is_intobject(v)) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1822 | err_setstr(TypeError, "slice index must be int"); |
| 1823 | return -1; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1824 | } |
| 1825 | *pi = getintvalue(v); |
| 1826 | if (*pi < 0) |
| 1827 | *pi += isize; |
| 1828 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1829 | return 0; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1830 | } |
| 1831 | |
| 1832 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1833 | apply_slice(u, v, w) /* return u[v:w] */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1834 | object *u, *v, *w; |
| 1835 | { |
| 1836 | typeobject *tp = u->ob_type; |
| 1837 | int ilow, ihigh, isize; |
| 1838 | if (tp->tp_as_sequence == NULL) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1839 | err_setstr(TypeError, "only sequences can be sliced"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1840 | return NULL; |
| 1841 | } |
| 1842 | ilow = 0; |
| 1843 | isize = ihigh = (*tp->tp_as_sequence->sq_length)(u); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1844 | if (slice_index(v, isize, &ilow) != 0) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1845 | return NULL; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1846 | if (slice_index(w, isize, &ihigh) != 0) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1847 | return NULL; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1848 | return (*tp->tp_as_sequence->sq_slice)(u, ilow, ihigh); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1849 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1850 | |
| 1851 | static int |
| 1852 | assign_subscript(w, key, v) /* w[key] = v */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1853 | object *w; |
| 1854 | object *key; |
| 1855 | object *v; |
| 1856 | { |
| 1857 | typeobject *tp = w->ob_type; |
| 1858 | sequence_methods *sq; |
| 1859 | mapping_methods *mp; |
| 1860 | int (*func)(); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1861 | if ((sq = tp->tp_as_sequence) != NULL && |
| 1862 | (func = sq->sq_ass_item) != NULL) { |
| 1863 | if (!is_intobject(key)) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1864 | err_setstr(TypeError, |
Guido van Rossum | 98256aa | 1991-12-24 13:25:19 +0000 | [diff] [blame] | 1865 | "sequence subscript must be integer (assign or del)"); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1866 | return -1; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1867 | } |
Guido van Rossum | 98256aa | 1991-12-24 13:25:19 +0000 | [diff] [blame] | 1868 | else { |
| 1869 | int i = getintvalue(key); |
| 1870 | if (i < 0) |
Guido van Rossum | 626dae7 | 1992-01-10 00:28:07 +0000 | [diff] [blame] | 1871 | i += (*sq->sq_length)(w); |
Guido van Rossum | 98256aa | 1991-12-24 13:25:19 +0000 | [diff] [blame] | 1872 | return (*func)(w, i, v); |
| 1873 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1874 | } |
| 1875 | else if ((mp = tp->tp_as_mapping) != NULL && |
| 1876 | (func = mp->mp_ass_subscript) != NULL) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1877 | return (*func)(w, key, v); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1878 | } |
| 1879 | else { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1880 | err_setstr(TypeError, |
| 1881 | "can't assign to this subscripted object"); |
| 1882 | return -1; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1883 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1884 | } |
| 1885 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1886 | static int |
| 1887 | assign_slice(u, v, w, x) /* u[v:w] = x */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1888 | object *u, *v, *w, *x; |
| 1889 | { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1890 | sequence_methods *sq = u->ob_type->tp_as_sequence; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1891 | int ilow, ihigh, isize; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1892 | if (sq == NULL) { |
| 1893 | err_setstr(TypeError, "assign to slice of non-sequence"); |
| 1894 | return -1; |
| 1895 | } |
| 1896 | if (sq == NULL || sq->sq_ass_slice == NULL) { |
| 1897 | err_setstr(TypeError, "unassignable slice"); |
| 1898 | return -1; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1899 | } |
| 1900 | ilow = 0; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1901 | isize = ihigh = (*sq->sq_length)(u); |
| 1902 | if (slice_index(v, isize, &ilow) != 0) |
| 1903 | return -1; |
| 1904 | if (slice_index(w, isize, &ihigh) != 0) |
| 1905 | return -1; |
| 1906 | return (*sq->sq_ass_slice)(u, ilow, ihigh, x); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1907 | } |
| 1908 | |
| 1909 | static int |
| 1910 | cmp_exception(err, v) |
| 1911 | object *err, *v; |
| 1912 | { |
| 1913 | if (is_tupleobject(v)) { |
| 1914 | int i, n; |
| 1915 | n = gettuplesize(v); |
| 1916 | for (i = 0; i < n; i++) { |
Guido van Rossum | 32c6cdf | 1991-12-10 13:52:46 +0000 | [diff] [blame] | 1917 | /* Test recursively */ |
| 1918 | if (cmp_exception(err, gettupleitem(v, i))) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1919 | return 1; |
| 1920 | } |
| 1921 | return 0; |
| 1922 | } |
| 1923 | return err == v; |
| 1924 | } |
| 1925 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1926 | static int |
| 1927 | cmp_member(v, w) |
| 1928 | object *v, *w; |
| 1929 | { |
| 1930 | int i, n, cmp; |
| 1931 | object *x; |
| 1932 | sequence_methods *sq; |
| 1933 | /* Special case for char in string */ |
| 1934 | if (is_stringobject(w)) { |
| 1935 | register char *s, *end; |
| 1936 | register char c; |
| 1937 | if (!is_stringobject(v) || getstringsize(v) != 1) { |
| 1938 | err_setstr(TypeError, |
| 1939 | "string member test needs char left operand"); |
| 1940 | return -1; |
| 1941 | } |
| 1942 | c = getstringvalue(v)[0]; |
| 1943 | s = getstringvalue(w); |
| 1944 | end = s + getstringsize(w); |
| 1945 | while (s < end) { |
| 1946 | if (c == *s++) |
| 1947 | return 1; |
| 1948 | } |
| 1949 | return 0; |
| 1950 | } |
| 1951 | sq = w->ob_type->tp_as_sequence; |
| 1952 | if (sq == NULL) { |
| 1953 | err_setstr(TypeError, |
| 1954 | "'in' or 'not in' needs sequence right argument"); |
| 1955 | return -1; |
| 1956 | } |
| 1957 | n = (*sq->sq_length)(w); |
| 1958 | for (i = 0; i < n; i++) { |
| 1959 | x = (*sq->sq_item)(w, i); |
| 1960 | cmp = cmpobject(v, x); |
| 1961 | XDECREF(x); |
| 1962 | if (cmp == 0) |
| 1963 | return 1; |
| 1964 | } |
| 1965 | return 0; |
| 1966 | } |
| 1967 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1968 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1969 | cmp_outcome(op, v, w) |
Guido van Rossum | 5b7313a | 1992-04-06 13:24:57 +0000 | [diff] [blame] | 1970 | int op; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1971 | register object *v; |
| 1972 | register object *w; |
| 1973 | { |
| 1974 | register int cmp; |
| 1975 | register int res = 0; |
| 1976 | switch (op) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1977 | case IS: |
| 1978 | case IS_NOT: |
| 1979 | res = (v == w); |
| 1980 | if (op == IS_NOT) |
| 1981 | res = !res; |
| 1982 | break; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1983 | case IN: |
| 1984 | case NOT_IN: |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1985 | res = cmp_member(v, w); |
| 1986 | if (res < 0) |
| 1987 | return NULL; |
| 1988 | if (op == NOT_IN) |
| 1989 | res = !res; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1990 | break; |
| 1991 | case EXC_MATCH: |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1992 | res = cmp_exception(v, w); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1993 | break; |
| 1994 | default: |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1995 | cmp = cmpobject(v, w); |
| 1996 | switch (op) { |
| 1997 | case LT: res = cmp < 0; break; |
| 1998 | case LE: res = cmp <= 0; break; |
| 1999 | case EQ: res = cmp == 0; break; |
| 2000 | case NE: res = cmp != 0; break; |
| 2001 | case GT: res = cmp > 0; break; |
| 2002 | case GE: res = cmp >= 0; break; |
| 2003 | /* XXX no default? (res is initialized to 0 though) */ |
| 2004 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2005 | } |
| 2006 | v = res ? True : False; |
| 2007 | INCREF(v); |
| 2008 | return v; |
| 2009 | } |
| 2010 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2011 | static int |
| 2012 | import_from(locals, v, name) |
| 2013 | object *locals; |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2014 | object *v; |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 2015 | object *name; |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2016 | { |
| 2017 | object *w, *x; |
| 2018 | w = getmoduledict(v); |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 2019 | if (getstringvalue(name)[0] == '*') { |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2020 | int i; |
| 2021 | int n = getdictsize(w); |
| 2022 | for (i = 0; i < n; i++) { |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 2023 | name = getdict2key(w, i); |
| 2024 | if (name == NULL || getstringvalue(name)[0] == '_') |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2025 | continue; |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 2026 | x = dict2lookup(w, name); |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2027 | if (x == NULL) { |
| 2028 | /* XXX can't happen? */ |
Guido van Rossum | 98256aa | 1991-12-24 13:25:19 +0000 | [diff] [blame] | 2029 | err_setstr(SystemError, getstringvalue(name)); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2030 | return -1; |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2031 | } |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 2032 | if (dict2insert(locals, name, x) != 0) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2033 | return -1; |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2034 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2035 | return 0; |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2036 | } |
| 2037 | else { |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 2038 | x = dict2lookup(w, name); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2039 | if (x == NULL) { |
Guido van Rossum | 98256aa | 1991-12-24 13:25:19 +0000 | [diff] [blame] | 2040 | char buf[250]; |
Guido van Rossum | 16dfd29 | 1992-02-05 11:17:30 +0000 | [diff] [blame] | 2041 | sprintf(buf, "cannot import name %.230s", |
Guido van Rossum | 98256aa | 1991-12-24 13:25:19 +0000 | [diff] [blame] | 2042 | getstringvalue(name)); |
| 2043 | err_setstr(ImportError, buf); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2044 | return -1; |
| 2045 | } |
| 2046 | else |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 2047 | return dict2insert(locals, name, x); |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2048 | } |
| 2049 | } |
| 2050 | |
| 2051 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2052 | build_class(v, w) |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2053 | object *v; /* None or tuple containing base classes */ |
| 2054 | object *w; /* dictionary */ |
| 2055 | { |
| 2056 | if (is_tupleobject(v)) { |
| 2057 | int i; |
| 2058 | for (i = gettuplesize(v); --i >= 0; ) { |
| 2059 | object *x = gettupleitem(v, i); |
| 2060 | if (!is_classobject(x)) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2061 | err_setstr(TypeError, |
| 2062 | "base is not a class object"); |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2063 | return NULL; |
| 2064 | } |
| 2065 | } |
| 2066 | } |
| 2067 | else { |
| 2068 | v = NULL; |
| 2069 | } |
| 2070 | if (!is_dictobject(w)) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2071 | err_setstr(SystemError, "build_class with non-dictionary"); |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2072 | return NULL; |
| 2073 | } |
Guido van Rossum | 7e3090c | 1991-10-20 20:26:16 +0000 | [diff] [blame] | 2074 | return newclassobject(v, w, (object *) NULL); |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2075 | } |