Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | /*********************************************************** |
Guido van Rossum | 34679b7 | 1993-01-26 13:33:44 +0000 | [diff] [blame] | 2 | Copyright 1991, 1992, 1993 by Stichting Mathematisch Centrum, |
| 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 | 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 | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 39 | /* Turn this on if your compiler chokes on the big switch: */ |
| 40 | /* #define CASE_TOO_BIG 1 /**/ |
| 41 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 42 | #ifndef NDEBUG |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 43 | /* For debugging the interpreter: */ |
| 44 | #define LLTRACE 1 /* Low-level trace feature */ |
| 45 | #define CHECKEXC 1 /* Double-check exception checking */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 46 | #endif |
| 47 | |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 48 | /* Forward declarations */ |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 49 | |
Guido van Rossum | 0a066c0 | 1992-03-27 17:29:15 +0000 | [diff] [blame] | 50 | #ifdef LLTRACE |
| 51 | static int prtrace PROTO((object *, char *)); |
| 52 | #endif |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 53 | static void call_exc_trace PROTO((object **, object**, frameobject *)); |
| 54 | static int call_trace |
| 55 | PROTO((object **, object **, frameobject *, char *, object *)); |
Guido van Rossum | 0a066c0 | 1992-03-27 17:29:15 +0000 | [diff] [blame] | 56 | static int testbool PROTO((object *)); |
| 57 | static object *add PROTO((object *, object *)); |
| 58 | static object *sub PROTO((object *, object *)); |
| 59 | static object *mul PROTO((object *, object *)); |
| 60 | static object *divide PROTO((object *, object *)); |
| 61 | static object *rem PROTO((object *, object *)); |
| 62 | static object *neg PROTO((object *)); |
| 63 | static object *pos PROTO((object *)); |
| 64 | static object *not PROTO((object *)); |
| 65 | static object *invert PROTO((object *)); |
| 66 | static object *lshift PROTO((object *, object *)); |
| 67 | static object *rshift PROTO((object *, object *)); |
| 68 | static object *and PROTO((object *, object *)); |
| 69 | static object *xor PROTO((object *, object *)); |
| 70 | static object *or PROTO((object *, object *)); |
| 71 | static object *call_builtin PROTO((object *, object *)); |
| 72 | static object *call_function PROTO((object *, object *)); |
| 73 | static object *apply_subscript PROTO((object *, object *)); |
| 74 | static object *loop_subscript PROTO((object *, object *)); |
| 75 | static int slice_index PROTO((object *, int, int *)); |
| 76 | static object *apply_slice PROTO((object *, object *, object *)); |
| 77 | static int assign_subscript PROTO((object *, object *, object *)); |
| 78 | static int assign_slice PROTO((object *, object *, object *, object *)); |
| 79 | static int cmp_exception PROTO((object *, object *)); |
| 80 | static int cmp_member PROTO((object *, object *)); |
Guido van Rossum | 5b7313a | 1992-04-06 13:24:57 +0000 | [diff] [blame] | 81 | static object *cmp_outcome PROTO((int, object *, object *)); |
Guido van Rossum | 0a066c0 | 1992-03-27 17:29:15 +0000 | [diff] [blame] | 82 | static int import_from PROTO((object *, object *, object *)); |
| 83 | static object *build_class PROTO((object *, object *)); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 84 | |
| 85 | |
Guido van Rossum | 0a066c0 | 1992-03-27 17:29:15 +0000 | [diff] [blame] | 86 | /* Pointer to current frame, used to link new frames to */ |
| 87 | |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 88 | static frameobject *current_frame; |
| 89 | |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 90 | #ifdef USE_THREAD |
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 | #include <errno.h> |
| 93 | #include "thread.h" |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 94 | |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 95 | static type_lock interpreter_lock; |
| 96 | |
| 97 | void |
| 98 | init_save_thread() |
| 99 | { |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 100 | if (interpreter_lock) |
Sjoerd Mullender | ed59d20 | 1993-01-06 13:36:38 +0000 | [diff] [blame] | 101 | return; |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 102 | interpreter_lock = allocate_lock(); |
| 103 | acquire_lock(interpreter_lock, 1); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 104 | } |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 105 | |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 106 | #endif |
| 107 | |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 108 | /* Functions save_thread and restore_thread are always defined so |
| 109 | dynamically loaded modules needn't be compiled separately for use |
| 110 | with and without threads: */ |
| 111 | |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 112 | object * |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 113 | save_thread() |
| 114 | { |
| 115 | #ifdef USE_THREAD |
| 116 | if (interpreter_lock) { |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 117 | object *res; |
| 118 | res = (object *)current_frame; |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 119 | current_frame = NULL; |
| 120 | release_lock(interpreter_lock); |
| 121 | return res; |
| 122 | } |
| 123 | else |
| 124 | return NULL; |
| 125 | #endif |
| 126 | } |
| 127 | |
| 128 | void |
| 129 | restore_thread(x) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 130 | object *x; |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 131 | { |
| 132 | #ifdef USE_THREAD |
| 133 | if (interpreter_lock) { |
| 134 | int err; |
| 135 | err = errno; |
| 136 | acquire_lock(interpreter_lock, 1); |
| 137 | errno = err; |
| 138 | current_frame = (frameobject *)x; |
| 139 | } |
| 140 | #endif |
| 141 | } |
| 142 | |
| 143 | |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 144 | /* Status code for main loop (reason for stack unwind) */ |
| 145 | |
| 146 | enum why_code { |
| 147 | WHY_NOT, /* No error */ |
| 148 | WHY_EXCEPTION, /* Exception occurred */ |
| 149 | WHY_RERAISE, /* Exception re-raised by 'finally' */ |
| 150 | WHY_RETURN, /* 'return' statement */ |
| 151 | WHY_BREAK /* 'break' statement */ |
| 152 | }; |
| 153 | |
| 154 | |
| 155 | /* Interpreter main loop */ |
| 156 | |
| 157 | object * |
| 158 | eval_code(co, globals, locals, arg) |
| 159 | codeobject *co; |
| 160 | object *globals; |
| 161 | object *locals; |
| 162 | object *arg; |
| 163 | { |
| 164 | register unsigned char *next_instr; |
| 165 | register int opcode; /* Current opcode */ |
| 166 | register int oparg; /* Current opcode argument, if any */ |
| 167 | register object **stack_pointer; |
| 168 | register enum why_code why; /* Reason for block stack unwind */ |
| 169 | register int err; /* Error status -- nonzero if error */ |
| 170 | register object *x; /* Result object -- NULL if error */ |
| 171 | register object *v; /* Temporary objects popped off stack */ |
| 172 | register object *w; |
| 173 | register object *u; |
| 174 | register object *t; |
| 175 | register frameobject *f; /* Current frame */ |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame^] | 176 | register listobject *fastlocals = NULL; |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 177 | object *trace = NULL; /* Trace function or NULL */ |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 178 | object *retval; /* Return value iff why == WHY_RETURN */ |
| 179 | char *name; /* Name used by some instructions */ |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 180 | #ifdef LLTRACE |
| 181 | int lltrace = dictlookup(globals, "__lltrace__") != NULL; |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 182 | #endif |
Guido van Rossum | 99bec95 | 1992-09-03 20:29:45 +0000 | [diff] [blame] | 183 | #ifdef DEBUG |
| 184 | /* Make it easier to find out where we are with dbx */ |
| 185 | char *filename = getstringvalue(co->co_filename); |
| 186 | #endif |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 187 | |
| 188 | /* Code access macros */ |
| 189 | |
| 190 | #define GETCONST(i) Getconst(f, i) |
| 191 | #define GETNAME(i) Getname(f, i) |
| 192 | #define GETNAMEV(i) Getnamev(f, i) |
| 193 | #define FIRST_INSTR() (GETUSTRINGVALUE(f->f_code->co_code)) |
| 194 | #define INSTR_OFFSET() (next_instr - FIRST_INSTR()) |
| 195 | #define NEXTOP() (*next_instr++) |
| 196 | #define NEXTARG() (next_instr += 2, (next_instr[-1]<<8) + next_instr[-2]) |
| 197 | #define JUMPTO(x) (next_instr = FIRST_INSTR() + (x)) |
| 198 | #define JUMPBY(x) (next_instr += (x)) |
| 199 | |
| 200 | /* Stack manipulation macros */ |
| 201 | |
| 202 | #define STACK_LEVEL() (stack_pointer - f->f_valuestack) |
| 203 | #define EMPTY() (STACK_LEVEL() == 0) |
| 204 | #define TOP() (stack_pointer[-1]) |
| 205 | #define BASIC_PUSH(v) (*stack_pointer++ = (v)) |
| 206 | #define BASIC_POP() (*--stack_pointer) |
| 207 | |
Guido van Rossum | a9e7dc1 | 1992-10-18 18:53:57 +0000 | [diff] [blame] | 208 | #define CHECK_STACK(n) (STACK_LEVEL() + (n) < f->f_nvalues || \ |
| 209 | (stack_pointer = extend_stack(f, STACK_LEVEL(), n))) |
| 210 | |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 211 | #ifdef LLTRACE |
| 212 | #define PUSH(v) (BASIC_PUSH(v), lltrace && prtrace(TOP(), "push")) |
| 213 | #define POP() (lltrace && prtrace(TOP(), "pop"), BASIC_POP()) |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 214 | #else |
| 215 | #define PUSH(v) BASIC_PUSH(v) |
| 216 | #define POP() BASIC_POP() |
| 217 | #endif |
| 218 | |
| 219 | f = newframeobject( |
| 220 | current_frame, /*back*/ |
| 221 | co, /*code*/ |
| 222 | globals, /*globals*/ |
| 223 | locals, /*locals*/ |
| 224 | 50, /*nvalues*/ |
| 225 | 20); /*nblocks*/ |
| 226 | if (f == NULL) |
| 227 | return NULL; |
| 228 | |
| 229 | current_frame = f; |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 230 | |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 231 | if (sys_trace != NULL) { |
| 232 | /* sys_trace, if defined, is a function that will |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 233 | be called on *every* entry to a code block. |
| 234 | Its return value, if not None, is a function that |
| 235 | will be called at the start of each executed line |
| 236 | of code. (Actually, the function must return |
| 237 | itself in order to continue tracing.) |
| 238 | The trace functions are called with three arguments: |
| 239 | a pointer to the current frame, a string indicating |
| 240 | why the function is called, and an argument which |
| 241 | depends on the situation. The global trace function |
| 242 | (sys.trace) is also called whenever an exception |
| 243 | is detected. */ |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 244 | if (call_trace(&sys_trace, &trace, f, "call", arg)) { |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 245 | /* Trace function raised an error */ |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 246 | current_frame = f->f_back; |
| 247 | DECREF(f); |
| 248 | return NULL; |
| 249 | } |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 250 | } |
| 251 | |
| 252 | if (sys_profile != NULL) { |
| 253 | /* Similar for sys_profile, except it needn't return |
| 254 | itself and isn't called for "line" events */ |
| 255 | if (call_trace(&sys_profile, (object**)0, f, "call", arg)) { |
| 256 | current_frame = f->f_back; |
| 257 | DECREF(f); |
| 258 | return NULL; |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 259 | } |
| 260 | } |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 261 | |
| 262 | next_instr = GETUSTRINGVALUE(f->f_code->co_code); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 263 | stack_pointer = f->f_valuestack; |
| 264 | |
| 265 | if (arg != NULL) { |
| 266 | INCREF(arg); |
| 267 | PUSH(arg); |
| 268 | } |
| 269 | |
| 270 | why = WHY_NOT; |
| 271 | err = 0; |
| 272 | x = None; /* Not a reference, just anything non-NULL */ |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 273 | |
| 274 | for (;;) { |
Guido van Rossum | 4965bc8 | 1991-05-14 11:51:49 +0000 | [diff] [blame] | 275 | static int ticker; |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 276 | |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 277 | /* Do periodic things. |
| 278 | Doing this every time through the loop would add |
| 279 | too much overhead (a function call per instruction). |
| 280 | So we do it only every tenth instruction. */ |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 281 | |
| 282 | if (--ticker < 0) { |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 283 | ticker = 10; |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 284 | if (intrcheck()) { |
| 285 | err_set(KeyboardInterrupt); |
| 286 | why = WHY_EXCEPTION; |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 287 | goto on_error; |
| 288 | } |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 289 | |
| 290 | #ifdef USE_THREAD |
| 291 | if (interpreter_lock) { |
| 292 | /* Give another thread a chance */ |
| 293 | |
| 294 | current_frame = NULL; |
| 295 | release_lock(interpreter_lock); |
| 296 | |
| 297 | /* Other threads may run now */ |
| 298 | |
| 299 | acquire_lock(interpreter_lock, 1); |
| 300 | current_frame = f; |
| 301 | } |
| 302 | #endif |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 303 | } |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 304 | |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 305 | /* Extract opcode and argument */ |
Guido van Rossum | 99bec95 | 1992-09-03 20:29:45 +0000 | [diff] [blame] | 306 | |
| 307 | #ifdef DEBUG |
| 308 | f->f_lasti = INSTR_OFFSET(); |
| 309 | #endif |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 310 | |
| 311 | opcode = NEXTOP(); |
| 312 | if (HAS_ARG(opcode)) |
| 313 | oparg = NEXTARG(); |
| 314 | |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 315 | #ifdef LLTRACE |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 316 | /* Instruction tracing */ |
| 317 | |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 318 | if (lltrace) { |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 319 | if (HAS_ARG(opcode)) { |
| 320 | printf("%d: %d, %d\n", |
| 321 | (int) (INSTR_OFFSET() - 3), |
| 322 | opcode, oparg); |
| 323 | } |
| 324 | else { |
| 325 | printf("%d: %d\n", |
| 326 | (int) (INSTR_OFFSET() - 1), opcode); |
| 327 | } |
| 328 | } |
| 329 | #endif |
| 330 | |
Guido van Rossum | a9e7dc1 | 1992-10-18 18:53:57 +0000 | [diff] [blame] | 331 | if (!CHECK_STACK(3)) { |
| 332 | x = NULL; |
| 333 | break; |
| 334 | } |
| 335 | |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 336 | /* Main switch on opcode */ |
| 337 | |
| 338 | switch (opcode) { |
| 339 | |
| 340 | /* BEWARE! |
| 341 | It is essential that any operation that fails sets either |
| 342 | x to NULL, err to nonzero, or why to anything but WHY_NOT, |
| 343 | and that no operation that succeeds does this! */ |
| 344 | |
| 345 | /* case STOP_CODE: this is an error! */ |
| 346 | |
| 347 | case POP_TOP: |
| 348 | v = POP(); |
| 349 | DECREF(v); |
| 350 | break; |
| 351 | |
| 352 | case ROT_TWO: |
| 353 | v = POP(); |
| 354 | w = POP(); |
| 355 | PUSH(v); |
| 356 | PUSH(w); |
| 357 | break; |
| 358 | |
| 359 | case ROT_THREE: |
| 360 | v = POP(); |
| 361 | w = POP(); |
| 362 | x = POP(); |
| 363 | PUSH(v); |
| 364 | PUSH(x); |
| 365 | PUSH(w); |
| 366 | break; |
| 367 | |
| 368 | case DUP_TOP: |
| 369 | v = TOP(); |
| 370 | INCREF(v); |
| 371 | PUSH(v); |
| 372 | break; |
| 373 | |
| 374 | case UNARY_POSITIVE: |
| 375 | v = POP(); |
| 376 | x = pos(v); |
| 377 | DECREF(v); |
| 378 | PUSH(x); |
| 379 | break; |
| 380 | |
| 381 | case UNARY_NEGATIVE: |
| 382 | v = POP(); |
| 383 | x = neg(v); |
| 384 | DECREF(v); |
| 385 | PUSH(x); |
| 386 | break; |
| 387 | |
| 388 | case UNARY_NOT: |
| 389 | v = POP(); |
| 390 | x = not(v); |
| 391 | DECREF(v); |
| 392 | PUSH(x); |
| 393 | break; |
| 394 | |
| 395 | case UNARY_CONVERT: |
| 396 | v = POP(); |
| 397 | x = reprobject(v); |
| 398 | DECREF(v); |
| 399 | PUSH(x); |
| 400 | break; |
| 401 | |
| 402 | case UNARY_CALL: |
| 403 | v = POP(); |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 404 | f->f_lasti = INSTR_OFFSET() - 1; /* For tracing */ |
Guido van Rossum | 9c7b861 | 1991-12-16 13:04:47 +0000 | [diff] [blame] | 405 | x = call_object(v, (object *)NULL); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 406 | DECREF(v); |
| 407 | PUSH(x); |
| 408 | break; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 409 | |
| 410 | case UNARY_INVERT: |
| 411 | v = POP(); |
| 412 | x = invert(v); |
| 413 | DECREF(v); |
| 414 | PUSH(x); |
| 415 | break; |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 416 | |
| 417 | case BINARY_MULTIPLY: |
| 418 | w = POP(); |
| 419 | v = POP(); |
| 420 | x = mul(v, w); |
| 421 | DECREF(v); |
| 422 | DECREF(w); |
| 423 | PUSH(x); |
| 424 | break; |
| 425 | |
| 426 | case BINARY_DIVIDE: |
| 427 | w = POP(); |
| 428 | v = POP(); |
| 429 | x = divide(v, w); |
| 430 | DECREF(v); |
| 431 | DECREF(w); |
| 432 | PUSH(x); |
| 433 | break; |
| 434 | |
| 435 | case BINARY_MODULO: |
| 436 | w = POP(); |
| 437 | v = POP(); |
| 438 | x = rem(v, w); |
| 439 | DECREF(v); |
| 440 | DECREF(w); |
| 441 | PUSH(x); |
| 442 | break; |
| 443 | |
| 444 | case BINARY_ADD: |
| 445 | w = POP(); |
| 446 | v = POP(); |
| 447 | x = add(v, w); |
| 448 | DECREF(v); |
| 449 | DECREF(w); |
| 450 | PUSH(x); |
| 451 | break; |
| 452 | |
| 453 | case BINARY_SUBTRACT: |
| 454 | w = POP(); |
| 455 | v = POP(); |
| 456 | x = sub(v, w); |
| 457 | DECREF(v); |
| 458 | DECREF(w); |
| 459 | PUSH(x); |
| 460 | break; |
| 461 | |
| 462 | case BINARY_SUBSCR: |
| 463 | w = POP(); |
| 464 | v = POP(); |
| 465 | x = apply_subscript(v, w); |
| 466 | DECREF(v); |
| 467 | DECREF(w); |
| 468 | PUSH(x); |
| 469 | break; |
| 470 | |
| 471 | case BINARY_CALL: |
| 472 | w = POP(); |
| 473 | v = POP(); |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 474 | f->f_lasti = INSTR_OFFSET() - 1; /* For tracing */ |
Guido van Rossum | 9c7b861 | 1991-12-16 13:04:47 +0000 | [diff] [blame] | 475 | x = call_object(v, w); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 476 | DECREF(v); |
| 477 | DECREF(w); |
| 478 | PUSH(x); |
| 479 | break; |
| 480 | |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 481 | case BINARY_LSHIFT: |
| 482 | w = POP(); |
| 483 | v = POP(); |
| 484 | x = lshift(v, w); |
| 485 | DECREF(v); |
| 486 | DECREF(w); |
| 487 | PUSH(x); |
| 488 | break; |
| 489 | |
| 490 | case BINARY_RSHIFT: |
| 491 | w = POP(); |
| 492 | v = POP(); |
| 493 | x = rshift(v, w); |
| 494 | DECREF(v); |
| 495 | DECREF(w); |
| 496 | PUSH(x); |
| 497 | break; |
| 498 | |
| 499 | case BINARY_AND: |
| 500 | w = POP(); |
| 501 | v = POP(); |
| 502 | x = and(v, w); |
| 503 | DECREF(v); |
| 504 | DECREF(w); |
| 505 | PUSH(x); |
| 506 | break; |
| 507 | |
| 508 | case BINARY_XOR: |
| 509 | w = POP(); |
| 510 | v = POP(); |
| 511 | x = xor(v, w); |
| 512 | DECREF(v); |
| 513 | DECREF(w); |
| 514 | PUSH(x); |
| 515 | break; |
| 516 | |
| 517 | case BINARY_OR: |
| 518 | w = POP(); |
| 519 | v = POP(); |
| 520 | x = or(v, w); |
| 521 | DECREF(v); |
| 522 | DECREF(w); |
| 523 | PUSH(x); |
| 524 | break; |
| 525 | |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 526 | case SLICE+0: |
| 527 | case SLICE+1: |
| 528 | case SLICE+2: |
| 529 | case SLICE+3: |
| 530 | if ((opcode-SLICE) & 2) |
| 531 | w = POP(); |
| 532 | else |
| 533 | w = NULL; |
| 534 | if ((opcode-SLICE) & 1) |
| 535 | v = POP(); |
| 536 | else |
| 537 | v = NULL; |
| 538 | u = POP(); |
| 539 | x = apply_slice(u, v, w); |
| 540 | DECREF(u); |
| 541 | XDECREF(v); |
| 542 | XDECREF(w); |
| 543 | PUSH(x); |
| 544 | break; |
| 545 | |
| 546 | case STORE_SLICE+0: |
| 547 | case STORE_SLICE+1: |
| 548 | case STORE_SLICE+2: |
| 549 | case STORE_SLICE+3: |
| 550 | if ((opcode-STORE_SLICE) & 2) |
| 551 | w = POP(); |
| 552 | else |
| 553 | w = NULL; |
| 554 | if ((opcode-STORE_SLICE) & 1) |
| 555 | v = POP(); |
| 556 | else |
| 557 | v = NULL; |
| 558 | u = POP(); |
| 559 | t = POP(); |
| 560 | err = assign_slice(u, v, w, t); /* u[v:w] = t */ |
| 561 | DECREF(t); |
| 562 | DECREF(u); |
| 563 | XDECREF(v); |
| 564 | XDECREF(w); |
| 565 | break; |
| 566 | |
| 567 | case DELETE_SLICE+0: |
| 568 | case DELETE_SLICE+1: |
| 569 | case DELETE_SLICE+2: |
| 570 | case DELETE_SLICE+3: |
| 571 | if ((opcode-DELETE_SLICE) & 2) |
| 572 | w = POP(); |
| 573 | else |
| 574 | w = NULL; |
| 575 | if ((opcode-DELETE_SLICE) & 1) |
| 576 | v = POP(); |
| 577 | else |
| 578 | v = NULL; |
| 579 | u = POP(); |
| 580 | err = assign_slice(u, v, w, (object *)NULL); |
| 581 | /* del u[v:w] */ |
| 582 | DECREF(u); |
| 583 | XDECREF(v); |
| 584 | XDECREF(w); |
| 585 | break; |
| 586 | |
| 587 | case STORE_SUBSCR: |
| 588 | w = POP(); |
| 589 | v = POP(); |
| 590 | u = POP(); |
| 591 | /* v[w] = u */ |
| 592 | err = assign_subscript(v, w, u); |
| 593 | DECREF(u); |
| 594 | DECREF(v); |
| 595 | DECREF(w); |
| 596 | break; |
| 597 | |
| 598 | case DELETE_SUBSCR: |
| 599 | w = POP(); |
| 600 | v = POP(); |
| 601 | /* del v[w] */ |
| 602 | err = assign_subscript(v, w, (object *)NULL); |
| 603 | DECREF(v); |
| 604 | DECREF(w); |
| 605 | break; |
| 606 | |
| 607 | case PRINT_EXPR: |
| 608 | v = POP(); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 609 | /* Print value except if procedure result */ |
| 610 | if (v != None) { |
| 611 | flushline(); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 612 | x = sysget("stdout"); |
| 613 | softspace(x, 1); |
| 614 | err = writeobject(v, x, 0); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 615 | flushline(); |
| 616 | } |
| 617 | DECREF(v); |
| 618 | break; |
| 619 | |
| 620 | case PRINT_ITEM: |
| 621 | v = POP(); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 622 | w = sysget("stdout"); |
| 623 | if (softspace(w, 1)) |
| 624 | writestring(" ", w); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 625 | if (is_stringobject(v)) { |
| 626 | char *s = getstringvalue(v); |
| 627 | int len = getstringsize(v); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 628 | err = writeobject(v, w, PRINT_RAW); |
| 629 | if (err == 0 && len > 0 && s[len-1] == '\n') |
| 630 | softspace(w, 0); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 631 | } |
| 632 | else { |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 633 | err = writeobject(v, w, 0); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 634 | } |
| 635 | DECREF(v); |
| 636 | break; |
| 637 | |
| 638 | case PRINT_NEWLINE: |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 639 | x = sysget("stdout"); |
| 640 | if (x == NULL) |
| 641 | err_setstr(RuntimeError, "lost sys.stdout"); |
| 642 | else { |
| 643 | writestring("\n", x); |
| 644 | softspace(x, 0); |
| 645 | } |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 646 | break; |
| 647 | |
| 648 | case BREAK_LOOP: |
| 649 | why = WHY_BREAK; |
| 650 | break; |
| 651 | |
| 652 | case RAISE_EXCEPTION: |
| 653 | v = POP(); |
| 654 | w = POP(); |
Guido van Rossum | 32c6cdf | 1991-12-10 13:52:46 +0000 | [diff] [blame] | 655 | /* A tuple is equivalent to its first element here */ |
| 656 | while (is_tupleobject(w)) { |
| 657 | u = w; |
| 658 | w = gettupleitem(u, 0); |
| 659 | DECREF(u); |
| 660 | } |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 661 | if (!is_stringobject(w)) |
| 662 | err_setstr(TypeError, |
| 663 | "exceptions must be strings"); |
| 664 | else |
| 665 | err_setval(w, v); |
| 666 | DECREF(v); |
| 667 | DECREF(w); |
| 668 | why = WHY_EXCEPTION; |
| 669 | break; |
| 670 | |
| 671 | case LOAD_LOCALS: |
| 672 | v = f->f_locals; |
| 673 | INCREF(v); |
| 674 | PUSH(v); |
| 675 | break; |
| 676 | |
| 677 | case RETURN_VALUE: |
| 678 | retval = POP(); |
| 679 | why = WHY_RETURN; |
| 680 | break; |
| 681 | |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 682 | case BUILD_FUNCTION: |
| 683 | v = POP(); |
| 684 | x = newfuncobject(v, f->f_globals); |
| 685 | DECREF(v); |
| 686 | PUSH(x); |
| 687 | break; |
| 688 | |
| 689 | case POP_BLOCK: |
| 690 | { |
| 691 | block *b = pop_block(f); |
| 692 | while (STACK_LEVEL() > b->b_level) { |
| 693 | v = POP(); |
| 694 | DECREF(v); |
| 695 | } |
| 696 | } |
| 697 | break; |
| 698 | |
| 699 | case END_FINALLY: |
| 700 | v = POP(); |
| 701 | if (is_intobject(v)) { |
| 702 | why = (enum why_code) getintvalue(v); |
| 703 | if (why == WHY_RETURN) |
| 704 | retval = POP(); |
| 705 | } |
| 706 | else if (is_stringobject(v)) { |
| 707 | w = POP(); |
| 708 | err_setval(v, w); |
| 709 | DECREF(w); |
| 710 | w = POP(); |
| 711 | tb_store(w); |
| 712 | DECREF(w); |
| 713 | why = WHY_RERAISE; |
| 714 | } |
| 715 | else if (v != None) { |
| 716 | err_setstr(SystemError, |
| 717 | "'finally' pops bad exception"); |
| 718 | why = WHY_EXCEPTION; |
| 719 | } |
| 720 | DECREF(v); |
| 721 | break; |
| 722 | |
| 723 | case BUILD_CLASS: |
| 724 | w = POP(); |
| 725 | v = POP(); |
| 726 | x = build_class(v, w); |
| 727 | PUSH(x); |
| 728 | DECREF(v); |
| 729 | DECREF(w); |
| 730 | break; |
| 731 | |
| 732 | case STORE_NAME: |
| 733 | w = GETNAMEV(oparg); |
| 734 | v = POP(); |
| 735 | err = dict2insert(f->f_locals, w, v); |
| 736 | DECREF(v); |
| 737 | break; |
| 738 | |
| 739 | case DELETE_NAME: |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 740 | w = GETNAMEV(oparg); |
| 741 | if ((err = dict2remove(f->f_locals, w)) != 0) |
| 742 | err_setstr(NameError, getstringvalue(w)); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 743 | break; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 744 | |
| 745 | #ifdef CASE_TOO_BIG |
| 746 | default: switch (opcode) { |
| 747 | #endif |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 748 | |
Guido van Rossum | 6a3f9a8 | 1992-01-14 18:29:20 +0000 | [diff] [blame] | 749 | case UNPACK_VARARG: |
| 750 | if (EMPTY()) { |
| 751 | err_setstr(TypeError, |
| 752 | "no argument list"); |
| 753 | why = WHY_EXCEPTION; |
| 754 | break; |
| 755 | } |
| 756 | v = POP(); |
| 757 | if (!is_tupleobject(v)) { |
| 758 | err_setstr(TypeError, |
| 759 | "bad argument list"); |
| 760 | why = WHY_EXCEPTION; |
| 761 | } |
| 762 | else if (gettuplesize(v) < oparg) { |
| 763 | err_setstr(TypeError, |
| 764 | "not enough arguments"); |
| 765 | why = WHY_EXCEPTION; |
| 766 | } |
| 767 | else if (oparg == 0) { |
| 768 | PUSH(v); |
| 769 | break; |
| 770 | } |
| 771 | else { |
| 772 | x = gettupleslice(v, oparg, gettuplesize(v)); |
| 773 | if (x != NULL) { |
| 774 | PUSH(x); |
Guido van Rossum | a9e7dc1 | 1992-10-18 18:53:57 +0000 | [diff] [blame] | 775 | if (!CHECK_STACK(oparg)) { |
| 776 | x = NULL; |
| 777 | break; |
| 778 | } |
Guido van Rossum | 6a3f9a8 | 1992-01-14 18:29:20 +0000 | [diff] [blame] | 779 | for (; --oparg >= 0; ) { |
| 780 | w = gettupleitem(v, oparg); |
| 781 | INCREF(w); |
| 782 | PUSH(w); |
| 783 | } |
| 784 | } |
| 785 | } |
| 786 | DECREF(v); |
| 787 | break; |
| 788 | |
Guido van Rossum | 9c7b861 | 1991-12-16 13:04:47 +0000 | [diff] [blame] | 789 | case UNPACK_ARG: |
Guido van Rossum | 9c7b861 | 1991-12-16 13:04:47 +0000 | [diff] [blame] | 790 | { |
| 791 | int n; |
| 792 | if (EMPTY()) { |
| 793 | err_setstr(TypeError, |
| 794 | "no argument list"); |
| 795 | why = WHY_EXCEPTION; |
| 796 | break; |
| 797 | } |
| 798 | v = POP(); |
| 799 | if (!is_tupleobject(v)) { |
| 800 | err_setstr(TypeError, |
| 801 | "bad argument list"); |
| 802 | why = WHY_EXCEPTION; |
| 803 | break; |
| 804 | } |
| 805 | n = gettuplesize(v); |
Guido van Rossum | 6f5afc9 | 1993-02-05 09:46:15 +0000 | [diff] [blame] | 806 | #ifdef COMPAT_HACKS |
| 807 | /* Implement various compatibility hacks (for 0.9.4 or earlier): |
| 808 | (a) f(a,b,...) accepts f((1,2,...)) |
| 809 | (b) f((a,b,...)) accepts f(1,2,...) |
| 810 | (c) f(self,(a,b,...)) accepts f(x,1,2,...) |
| 811 | */ |
Guido van Rossum | 9c7b861 | 1991-12-16 13:04:47 +0000 | [diff] [blame] | 812 | if (n == 1 && oparg != 1) { |
| 813 | /* Rule (a) */ |
| 814 | w = gettupleitem(v, 0); |
| 815 | if (is_tupleobject(w)) { |
| 816 | INCREF(w); |
| 817 | DECREF(v); |
| 818 | v = w; |
| 819 | n = gettuplesize(v); |
| 820 | } |
| 821 | } |
| 822 | else if (n != 1 && oparg == 1) { |
| 823 | /* Rule (b) */ |
| 824 | PUSH(v); |
| 825 | break; |
| 826 | /* Don't fall through */ |
| 827 | } |
| 828 | else if (n > 2 && oparg == 2) { |
| 829 | /* Rule (c) */ |
| 830 | int i; |
| 831 | w = newtupleobject(n-1); |
| 832 | u = newtupleobject(2); |
| 833 | if (u == NULL || w == NULL) { |
| 834 | XDECREF(w); |
| 835 | XDECREF(u); |
| 836 | DECREF(v); |
| 837 | why = WHY_EXCEPTION; |
| 838 | break; |
| 839 | } |
| 840 | t = gettupleitem(v, 0); |
| 841 | INCREF(t); |
| 842 | settupleitem(u, 0, t); |
| 843 | for (i = 1; i < n; i++) { |
| 844 | t = gettupleitem(v, i); |
| 845 | INCREF(t); |
| 846 | settupleitem(w, i-1, t); |
| 847 | } |
| 848 | settupleitem(u, 1, w); |
| 849 | DECREF(v); |
| 850 | v = u; |
| 851 | n = 2; |
| 852 | } |
Guido van Rossum | 5f59d60 | 1992-12-14 16:59:51 +0000 | [diff] [blame] | 853 | #endif /* Disabled compatibility hacks */ |
Guido van Rossum | 9c7b861 | 1991-12-16 13:04:47 +0000 | [diff] [blame] | 854 | if (n != oparg) { |
| 855 | err_setstr(TypeError, |
| 856 | "arg count mismatch"); |
| 857 | why = WHY_EXCEPTION; |
| 858 | DECREF(v); |
| 859 | break; |
| 860 | } |
| 861 | PUSH(v); |
| 862 | } |
| 863 | /* Fall through */ |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 864 | case UNPACK_TUPLE: |
| 865 | v = POP(); |
| 866 | if (!is_tupleobject(v)) { |
| 867 | err_setstr(TypeError, "unpack non-tuple"); |
| 868 | why = WHY_EXCEPTION; |
| 869 | } |
| 870 | else if (gettuplesize(v) != oparg) { |
Guido van Rossum | 32c6cdf | 1991-12-10 13:52:46 +0000 | [diff] [blame] | 871 | err_setstr(ValueError, |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 872 | "unpack tuple of wrong size"); |
| 873 | why = WHY_EXCEPTION; |
| 874 | } |
| 875 | else { |
Guido van Rossum | a9e7dc1 | 1992-10-18 18:53:57 +0000 | [diff] [blame] | 876 | if (!CHECK_STACK(oparg)) { |
| 877 | x = NULL; |
| 878 | break; |
| 879 | } |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 880 | for (; --oparg >= 0; ) { |
| 881 | w = gettupleitem(v, oparg); |
| 882 | INCREF(w); |
| 883 | PUSH(w); |
| 884 | } |
| 885 | } |
| 886 | DECREF(v); |
| 887 | break; |
| 888 | |
| 889 | case UNPACK_LIST: |
| 890 | v = POP(); |
| 891 | if (!is_listobject(v)) { |
| 892 | err_setstr(TypeError, "unpack non-list"); |
| 893 | why = WHY_EXCEPTION; |
| 894 | } |
| 895 | else if (getlistsize(v) != oparg) { |
Guido van Rossum | 32c6cdf | 1991-12-10 13:52:46 +0000 | [diff] [blame] | 896 | err_setstr(ValueError, |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 897 | "unpack list of wrong size"); |
| 898 | why = WHY_EXCEPTION; |
| 899 | } |
| 900 | else { |
Guido van Rossum | a9e7dc1 | 1992-10-18 18:53:57 +0000 | [diff] [blame] | 901 | if (!CHECK_STACK(oparg)) { |
| 902 | x = NULL; |
| 903 | break; |
| 904 | } |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 905 | for (; --oparg >= 0; ) { |
| 906 | w = getlistitem(v, oparg); |
| 907 | INCREF(w); |
| 908 | PUSH(w); |
| 909 | } |
| 910 | } |
| 911 | DECREF(v); |
| 912 | break; |
| 913 | |
| 914 | case STORE_ATTR: |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame^] | 915 | w = GETNAMEV(oparg); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 916 | v = POP(); |
| 917 | u = POP(); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame^] | 918 | err = setattro(v, w, u); /* v.w = u */ |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 919 | DECREF(v); |
| 920 | DECREF(u); |
| 921 | break; |
| 922 | |
| 923 | case DELETE_ATTR: |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame^] | 924 | w = GETNAMEV(oparg); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 925 | v = POP(); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame^] | 926 | err = setattro(v, w, (object *)NULL); /* del v.w */ |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 927 | DECREF(v); |
| 928 | break; |
| 929 | |
Guido van Rossum | 32c6cdf | 1991-12-10 13:52:46 +0000 | [diff] [blame] | 930 | case STORE_GLOBAL: |
| 931 | w = GETNAMEV(oparg); |
| 932 | v = POP(); |
| 933 | err = dict2insert(f->f_globals, w, v); |
| 934 | DECREF(v); |
| 935 | break; |
| 936 | |
| 937 | case DELETE_GLOBAL: |
| 938 | w = GETNAMEV(oparg); |
| 939 | if ((err = dict2remove(f->f_globals, w)) != 0) |
| 940 | err_setstr(NameError, getstringvalue(w)); |
| 941 | break; |
| 942 | |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 943 | case LOAD_CONST: |
| 944 | x = GETCONST(oparg); |
| 945 | INCREF(x); |
| 946 | PUSH(x); |
| 947 | break; |
| 948 | |
| 949 | case LOAD_NAME: |
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_clear(); |
| 954 | x = dict2lookup(f->f_globals, w); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 955 | if (x == NULL) { |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 956 | err_clear(); |
| 957 | x = getbuiltin(w); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 958 | if (x == NULL) { |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 959 | err_setstr(NameError, |
| 960 | getstringvalue(w)); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 961 | break; |
| 962 | } |
| 963 | } |
| 964 | } |
| 965 | INCREF(x); |
| 966 | PUSH(x); |
| 967 | break; |
| 968 | |
| 969 | case LOAD_GLOBAL: |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 970 | w = GETNAMEV(oparg); |
| 971 | x = dict2lookup(f->f_globals, w); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 972 | if (x == NULL) { |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 973 | err_clear(); |
| 974 | x = getbuiltin(w); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 975 | if (x == NULL) { |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 976 | err_setstr(NameError, |
| 977 | getstringvalue(w)); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 978 | break; |
| 979 | } |
| 980 | } |
| 981 | INCREF(x); |
| 982 | PUSH(x); |
| 983 | break; |
| 984 | |
| 985 | case LOAD_LOCAL: |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 986 | w = GETNAMEV(oparg); |
| 987 | x = dict2lookup(f->f_locals, w); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 988 | if (x == NULL) { |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 989 | err_setstr(NameError, getstringvalue(w)); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 990 | break; |
| 991 | } |
| 992 | INCREF(x); |
| 993 | PUSH(x); |
| 994 | break; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame^] | 995 | |
| 996 | case RESERVE_FAST: |
| 997 | if (oparg > 0) { |
| 998 | XDECREF(fastlocals); |
| 999 | x = newlistobject(oparg); |
| 1000 | fastlocals = (listobject *) x; |
| 1001 | } |
| 1002 | break; |
| 1003 | |
| 1004 | case LOAD_FAST: |
| 1005 | /* NYI */ |
| 1006 | break; |
| 1007 | |
| 1008 | case STORE_FAST: |
| 1009 | /* NYI */ |
| 1010 | break; |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1011 | |
| 1012 | case BUILD_TUPLE: |
| 1013 | x = newtupleobject(oparg); |
| 1014 | if (x != NULL) { |
| 1015 | for (; --oparg >= 0;) { |
| 1016 | w = POP(); |
| 1017 | err = settupleitem(x, oparg, w); |
| 1018 | if (err != 0) |
| 1019 | break; |
| 1020 | } |
| 1021 | PUSH(x); |
| 1022 | } |
| 1023 | break; |
| 1024 | |
| 1025 | case BUILD_LIST: |
| 1026 | x = newlistobject(oparg); |
| 1027 | if (x != NULL) { |
| 1028 | for (; --oparg >= 0;) { |
| 1029 | w = POP(); |
| 1030 | err = setlistitem(x, oparg, w); |
| 1031 | if (err != 0) |
| 1032 | break; |
| 1033 | } |
| 1034 | PUSH(x); |
| 1035 | } |
| 1036 | break; |
| 1037 | |
| 1038 | case BUILD_MAP: |
| 1039 | x = newdictobject(); |
| 1040 | PUSH(x); |
| 1041 | break; |
| 1042 | |
| 1043 | case LOAD_ATTR: |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame^] | 1044 | w = GETNAMEV(oparg); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1045 | v = POP(); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame^] | 1046 | x = getattro(v, w); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1047 | DECREF(v); |
| 1048 | PUSH(x); |
| 1049 | break; |
| 1050 | |
| 1051 | case COMPARE_OP: |
| 1052 | w = POP(); |
| 1053 | v = POP(); |
Guido van Rossum | 5b7313a | 1992-04-06 13:24:57 +0000 | [diff] [blame] | 1054 | x = cmp_outcome(oparg, v, w); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1055 | DECREF(v); |
| 1056 | DECREF(w); |
| 1057 | PUSH(x); |
| 1058 | break; |
| 1059 | |
| 1060 | case IMPORT_NAME: |
| 1061 | name = GETNAME(oparg); |
| 1062 | x = import_module(name); |
| 1063 | XINCREF(x); |
| 1064 | PUSH(x); |
| 1065 | break; |
| 1066 | |
| 1067 | case IMPORT_FROM: |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 1068 | w = GETNAMEV(oparg); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1069 | v = TOP(); |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 1070 | err = import_from(f->f_locals, v, w); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1071 | break; |
| 1072 | |
| 1073 | case JUMP_FORWARD: |
| 1074 | JUMPBY(oparg); |
| 1075 | break; |
| 1076 | |
| 1077 | case JUMP_IF_FALSE: |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1078 | err = testbool(TOP()); |
| 1079 | if (err > 0) |
| 1080 | err = 0; |
| 1081 | else if (err == 0) |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1082 | JUMPBY(oparg); |
| 1083 | break; |
| 1084 | |
| 1085 | case JUMP_IF_TRUE: |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1086 | err = testbool(TOP()); |
| 1087 | if (err > 0) { |
| 1088 | err = 0; |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1089 | JUMPBY(oparg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1090 | } |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1091 | break; |
| 1092 | |
| 1093 | case JUMP_ABSOLUTE: |
| 1094 | JUMPTO(oparg); |
| 1095 | break; |
| 1096 | |
| 1097 | case FOR_LOOP: |
| 1098 | /* for v in s: ... |
| 1099 | On entry: stack contains s, i. |
| 1100 | On exit: stack contains s, i+1, s[i]; |
| 1101 | but if loop exhausted: |
| 1102 | s, i are popped, and we jump */ |
| 1103 | w = POP(); /* Loop index */ |
| 1104 | v = POP(); /* Sequence object */ |
| 1105 | u = loop_subscript(v, w); |
| 1106 | if (u != NULL) { |
| 1107 | PUSH(v); |
| 1108 | x = newintobject(getintvalue(w)+1); |
| 1109 | PUSH(x); |
| 1110 | DECREF(w); |
| 1111 | PUSH(u); |
| 1112 | } |
| 1113 | else { |
| 1114 | DECREF(v); |
| 1115 | DECREF(w); |
| 1116 | /* A NULL can mean "s exhausted" |
| 1117 | but also an error: */ |
| 1118 | if (err_occurred()) |
| 1119 | why = WHY_EXCEPTION; |
| 1120 | else |
| 1121 | JUMPBY(oparg); |
| 1122 | } |
| 1123 | break; |
| 1124 | |
| 1125 | case SETUP_LOOP: |
| 1126 | case SETUP_EXCEPT: |
| 1127 | case SETUP_FINALLY: |
| 1128 | setup_block(f, opcode, INSTR_OFFSET() + oparg, |
| 1129 | STACK_LEVEL()); |
| 1130 | break; |
| 1131 | |
| 1132 | case SET_LINENO: |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1133 | #ifdef LLTRACE |
| 1134 | if (lltrace) |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1135 | printf("--- Line %d ---\n", oparg); |
| 1136 | #endif |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1137 | f->f_lineno = oparg; |
| 1138 | if (trace != NULL) { |
| 1139 | /* Trace each line of code reached */ |
| 1140 | f->f_lasti = INSTR_OFFSET(); |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1141 | err = call_trace(&trace, &trace, |
| 1142 | f, "line", None); |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1143 | } |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1144 | break; |
| 1145 | |
| 1146 | default: |
| 1147 | fprintf(stderr, |
| 1148 | "XXX lineno: %d, opcode: %d\n", |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1149 | f->f_lineno, opcode); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1150 | err_setstr(SystemError, "eval_code: unknown opcode"); |
| 1151 | why = WHY_EXCEPTION; |
| 1152 | break; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1153 | |
| 1154 | #ifdef CASE_TOO_BIG |
| 1155 | } |
| 1156 | #endif |
| 1157 | |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1158 | } /* switch */ |
| 1159 | |
| 1160 | on_error: |
| 1161 | |
| 1162 | /* Quickly continue if no error occurred */ |
| 1163 | |
| 1164 | if (why == WHY_NOT) { |
| 1165 | if (err == 0 && x != NULL) |
| 1166 | continue; /* Normal, fast path */ |
| 1167 | why = WHY_EXCEPTION; |
| 1168 | x = None; |
| 1169 | err = 0; |
| 1170 | } |
| 1171 | |
Guido van Rossum | 801dcae | 1992-04-08 11:32:32 +0000 | [diff] [blame] | 1172 | #ifdef CHECKEXC |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1173 | /* Double-check exception status */ |
| 1174 | |
| 1175 | if (why == WHY_EXCEPTION || why == WHY_RERAISE) { |
| 1176 | if (!err_occurred()) { |
| 1177 | fprintf(stderr, "XXX ghost error\n"); |
| 1178 | err_setstr(SystemError, "ghost error"); |
| 1179 | why = WHY_EXCEPTION; |
| 1180 | } |
| 1181 | } |
| 1182 | else { |
| 1183 | if (err_occurred()) { |
| 1184 | fprintf(stderr, "XXX undetected error\n"); |
Guido van Rossum | 99bec95 | 1992-09-03 20:29:45 +0000 | [diff] [blame] | 1185 | abort(); |
| 1186 | /* NOTREACHED */ |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1187 | why = WHY_EXCEPTION; |
| 1188 | } |
| 1189 | } |
| 1190 | #endif |
| 1191 | |
| 1192 | /* Log traceback info if this is a real exception */ |
| 1193 | |
| 1194 | if (why == WHY_EXCEPTION) { |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1195 | f->f_lasti = INSTR_OFFSET() - 1; |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1196 | if (HAS_ARG(opcode)) |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1197 | f->f_lasti -= 2; |
| 1198 | tb_here(f); |
| 1199 | |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1200 | if (trace) |
| 1201 | call_exc_trace(&trace, &trace, f); |
| 1202 | if (sys_profile) |
| 1203 | call_exc_trace(&sys_profile, (object**)0, f); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1204 | } |
| 1205 | |
| 1206 | /* For the rest, treat WHY_RERAISE as WHY_EXCEPTION */ |
| 1207 | |
| 1208 | if (why == WHY_RERAISE) |
| 1209 | why = WHY_EXCEPTION; |
| 1210 | |
| 1211 | /* Unwind stacks if a (pseudo) exception occurred */ |
| 1212 | |
| 1213 | while (why != WHY_NOT && f->f_iblock > 0) { |
| 1214 | block *b = pop_block(f); |
| 1215 | while (STACK_LEVEL() > b->b_level) { |
| 1216 | v = POP(); |
| 1217 | XDECREF(v); |
| 1218 | } |
| 1219 | if (b->b_type == SETUP_LOOP && why == WHY_BREAK) { |
| 1220 | why = WHY_NOT; |
| 1221 | JUMPTO(b->b_handler); |
| 1222 | break; |
| 1223 | } |
| 1224 | if (b->b_type == SETUP_FINALLY || |
| 1225 | b->b_type == SETUP_EXCEPT && |
| 1226 | why == WHY_EXCEPTION) { |
| 1227 | if (why == WHY_EXCEPTION) { |
| 1228 | object *exc, *val; |
| 1229 | err_get(&exc, &val); |
| 1230 | if (val == NULL) { |
| 1231 | val = None; |
| 1232 | INCREF(val); |
| 1233 | } |
| 1234 | v = tb_fetch(); |
| 1235 | /* Make the raw exception data |
| 1236 | available to the handler, |
| 1237 | so a program can emulate the |
| 1238 | Python main loop. Don't do |
| 1239 | this for 'finally'. */ |
| 1240 | if (b->b_type == SETUP_EXCEPT) { |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1241 | sysset("exc_traceback", v); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1242 | sysset("exc_value", val); |
| 1243 | sysset("exc_type", exc); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1244 | } |
| 1245 | PUSH(v); |
| 1246 | PUSH(val); |
| 1247 | PUSH(exc); |
| 1248 | } |
| 1249 | else { |
| 1250 | if (why == WHY_RETURN) |
| 1251 | PUSH(retval); |
| 1252 | v = newintobject((long)why); |
| 1253 | PUSH(v); |
| 1254 | } |
| 1255 | why = WHY_NOT; |
| 1256 | JUMPTO(b->b_handler); |
| 1257 | break; |
| 1258 | } |
| 1259 | } /* unwind stack */ |
| 1260 | |
| 1261 | /* End the loop if we still have an error (or return) */ |
| 1262 | |
| 1263 | if (why != WHY_NOT) |
| 1264 | break; |
| 1265 | |
| 1266 | } /* main loop */ |
| 1267 | |
| 1268 | /* Pop remaining stack entries */ |
| 1269 | |
| 1270 | while (!EMPTY()) { |
| 1271 | v = POP(); |
| 1272 | XDECREF(v); |
| 1273 | } |
| 1274 | |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1275 | if (why != WHY_RETURN) |
| 1276 | retval = NULL; |
| 1277 | |
| 1278 | if (trace) { |
| 1279 | if (why == WHY_RETURN) { |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1280 | if (call_trace(&trace, &trace, f, "return", retval)) { |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1281 | XDECREF(retval); |
| 1282 | retval = NULL; |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1283 | why = WHY_EXCEPTION; |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1284 | } |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1285 | } |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1286 | XDECREF(trace); |
| 1287 | } |
| 1288 | |
| 1289 | if (sys_profile && why == WHY_RETURN) { |
| 1290 | if (call_trace(&sys_profile, (object**)0, |
| 1291 | f, "return", retval)) { |
| 1292 | XDECREF(retval); |
| 1293 | retval = NULL; |
| 1294 | why = WHY_EXCEPTION; |
| 1295 | } |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1296 | } |
| 1297 | |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1298 | /* Restore previous frame and release the current one */ |
| 1299 | |
| 1300 | current_frame = f->f_back; |
| 1301 | DECREF(f); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame^] | 1302 | |
| 1303 | XDECREF(fastlocals); |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1304 | |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1305 | return retval; |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1306 | } |
| 1307 | |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1308 | #ifdef LLTRACE |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1309 | static int |
| 1310 | prtrace(v, str) |
| 1311 | object *v; |
| 1312 | char *str; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1313 | { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1314 | printf("%s ", str); |
Guido van Rossum | 9093361 | 1991-06-07 16:10:43 +0000 | [diff] [blame] | 1315 | if (printobject(v, stdout, 0) != 0) |
| 1316 | err_clear(); /* Don't know what else to do */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1317 | printf("\n"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1318 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1319 | #endif |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1320 | |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1321 | static void |
| 1322 | call_exc_trace(p_trace, p_newtrace, f) |
| 1323 | object **p_trace, **p_newtrace; |
| 1324 | frameobject *f; |
| 1325 | { |
| 1326 | object *type, *value, *traceback, *arg; |
| 1327 | int err; |
| 1328 | err_get(&type, &value); |
Guido van Rossum | bd9ccca | 1992-04-09 14:58:08 +0000 | [diff] [blame] | 1329 | if (value == NULL) { |
| 1330 | value = None; |
| 1331 | INCREF(value); |
| 1332 | } |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1333 | traceback = tb_fetch(); |
| 1334 | arg = newtupleobject(3); |
Guido van Rossum | eee3fd4 | 1992-04-05 14:18:13 +0000 | [diff] [blame] | 1335 | if (arg == NULL) |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1336 | goto cleanup; |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1337 | settupleitem(arg, 0, type); |
| 1338 | settupleitem(arg, 1, value); |
| 1339 | settupleitem(arg, 2, traceback); |
| 1340 | err = call_trace(p_trace, p_newtrace, f, "exception", arg); |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1341 | if (!err) { |
Guido van Rossum | eee3fd4 | 1992-04-05 14:18:13 +0000 | [diff] [blame] | 1342 | cleanup: |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1343 | /* Restore original exception */ |
| 1344 | err_setval(type, value); |
| 1345 | tb_store(traceback); |
| 1346 | } |
Guido van Rossum | eee3fd4 | 1992-04-05 14:18:13 +0000 | [diff] [blame] | 1347 | XDECREF(arg); |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1348 | } |
| 1349 | |
| 1350 | static int |
| 1351 | call_trace(p_trace, p_newtrace, f, msg, arg) |
| 1352 | object **p_trace; /* in/out; may not be NULL; |
| 1353 | may not point to NULL variable initially */ |
| 1354 | object **p_newtrace; /* in/out; may be NULL; |
| 1355 | may point to NULL variable; |
| 1356 | may be same variable as p_newtrace */ |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1357 | frameobject *f; |
| 1358 | char *msg; |
| 1359 | object *arg; |
| 1360 | { |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1361 | object *arglist, *what; |
| 1362 | object *res = NULL; |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1363 | static int tracing = 0; |
| 1364 | |
| 1365 | if (tracing) { |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1366 | /* Don't do recursive traces */ |
| 1367 | if (p_newtrace) { |
| 1368 | XDECREF(*p_newtrace); |
| 1369 | *p_newtrace = NULL; |
| 1370 | } |
| 1371 | return 0; |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1372 | } |
| 1373 | |
| 1374 | arglist = newtupleobject(3); |
| 1375 | if (arglist == NULL) |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1376 | goto cleanup; |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1377 | what = newstringobject(msg); |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1378 | if (what == NULL) |
| 1379 | goto cleanup; |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1380 | INCREF(f); |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1381 | settupleitem(arglist, 0, (object *)f); |
| 1382 | settupleitem(arglist, 1, what); |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1383 | if (arg == NULL) |
| 1384 | arg = None; |
| 1385 | INCREF(arg); |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1386 | settupleitem(arglist, 2, arg); |
| 1387 | tracing++; |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1388 | res = call_object(*p_trace, arglist); |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1389 | tracing--; |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1390 | cleanup: |
| 1391 | XDECREF(arglist); |
| 1392 | if (res == NULL) { |
| 1393 | /* The trace proc raised an exception */ |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1394 | tb_here(f); |
Guido van Rossum | eee3fd4 | 1992-04-05 14:18:13 +0000 | [diff] [blame] | 1395 | DECREF(*p_trace); |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1396 | *p_trace = NULL; |
| 1397 | if (p_newtrace) { |
| 1398 | XDECREF(*p_newtrace); |
| 1399 | *p_newtrace = NULL; |
| 1400 | } |
Guido van Rossum | eee3fd4 | 1992-04-05 14:18:13 +0000 | [diff] [blame] | 1401 | return -1; |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1402 | } |
| 1403 | else { |
| 1404 | if (p_newtrace) { |
| 1405 | XDECREF(*p_newtrace); |
| 1406 | if (res == None) |
| 1407 | *p_newtrace = NULL; |
| 1408 | else { |
| 1409 | INCREF(res); |
| 1410 | *p_newtrace = res; |
| 1411 | } |
| 1412 | } |
| 1413 | DECREF(res); |
Guido van Rossum | 9c8d70d | 1992-03-23 18:19:28 +0000 | [diff] [blame] | 1414 | return 0; |
Guido van Rossum | eee3fd4 | 1992-04-05 14:18:13 +0000 | [diff] [blame] | 1415 | } |
Guido van Rossum | 96a42c8 | 1992-01-12 02:29:51 +0000 | [diff] [blame] | 1416 | } |
| 1417 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1418 | object * |
| 1419 | getlocals() |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1420 | { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1421 | if (current_frame == NULL) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1422 | return NULL; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1423 | else |
| 1424 | return current_frame->f_locals; |
| 1425 | } |
| 1426 | |
| 1427 | object * |
| 1428 | getglobals() |
| 1429 | { |
| 1430 | if (current_frame == NULL) |
| 1431 | return NULL; |
| 1432 | else |
| 1433 | return current_frame->f_globals; |
| 1434 | } |
| 1435 | |
| 1436 | void |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1437 | printtraceback(f) |
| 1438 | object *f; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1439 | { |
| 1440 | object *v = tb_fetch(); |
| 1441 | if (v != NULL) { |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1442 | writestring("Stack backtrace (innermost last):\n", f); |
| 1443 | tb_print(v, f); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1444 | DECREF(v); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1445 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1446 | } |
| 1447 | |
| 1448 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1449 | void |
| 1450 | flushline() |
| 1451 | { |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 1452 | object *f = sysget("stdout"); |
| 1453 | if (softspace(f, 0)) |
| 1454 | writestring("\n", f); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1455 | } |
| 1456 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1457 | |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1458 | /* Test a value used as condition, e.g., in a for or if statement. |
| 1459 | Return -1 if an error occurred */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1460 | |
| 1461 | static int |
| 1462 | testbool(v) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1463 | object *v; |
| 1464 | { |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1465 | int res; |
Guido van Rossum | 4965bc8 | 1991-05-14 11:51:49 +0000 | [diff] [blame] | 1466 | if (v == None) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1467 | res = 0; |
| 1468 | else if (v->ob_type->tp_as_number != NULL) |
| 1469 | res = (*v->ob_type->tp_as_number->nb_nonzero)(v); |
| 1470 | else if (v->ob_type->tp_as_mapping != NULL) |
| 1471 | res = (*v->ob_type->tp_as_mapping->mp_length)(v); |
| 1472 | else if (v->ob_type->tp_as_sequence != NULL) |
| 1473 | res = (*v->ob_type->tp_as_sequence->sq_length)(v); |
| 1474 | else |
Guido van Rossum | f9a2d33 | 1992-08-19 16:41:45 +0000 | [diff] [blame] | 1475 | res = 1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1476 | if (res > 0) |
| 1477 | res = 1; |
| 1478 | return res; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1479 | } |
| 1480 | |
| 1481 | static object * |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 1482 | or(v, w) |
| 1483 | object *v, *w; |
| 1484 | { |
| 1485 | if (v->ob_type->tp_as_number != NULL) { |
| 1486 | object *x; |
| 1487 | object * (*f) FPROTO((object *, object *)); |
| 1488 | if (coerce(&v, &w) != 0) |
| 1489 | return NULL; |
| 1490 | if ((f = v->ob_type->tp_as_number->nb_or) != NULL) |
| 1491 | x = (*f)(v, w); |
| 1492 | DECREF(v); |
| 1493 | DECREF(w); |
| 1494 | if (f != NULL) |
| 1495 | return x; |
| 1496 | } |
| 1497 | err_setstr(TypeError, "bad operand type(s) for |"); |
| 1498 | return NULL; |
| 1499 | } |
| 1500 | |
| 1501 | static object * |
| 1502 | xor(v, w) |
| 1503 | object *v, *w; |
| 1504 | { |
| 1505 | if (v->ob_type->tp_as_number != NULL) { |
| 1506 | object *x; |
| 1507 | object * (*f) FPROTO((object *, object *)); |
| 1508 | if (coerce(&v, &w) != 0) |
| 1509 | return NULL; |
| 1510 | if ((f = v->ob_type->tp_as_number->nb_xor) != NULL) |
| 1511 | x = (*f)(v, w); |
| 1512 | DECREF(v); |
| 1513 | DECREF(w); |
| 1514 | if (f != NULL) |
| 1515 | return x; |
| 1516 | } |
| 1517 | err_setstr(TypeError, "bad operand type(s) for ^"); |
| 1518 | return NULL; |
| 1519 | } |
| 1520 | |
| 1521 | static object * |
| 1522 | and(v, w) |
| 1523 | object *v, *w; |
| 1524 | { |
| 1525 | if (v->ob_type->tp_as_number != NULL) { |
| 1526 | object *x; |
| 1527 | object * (*f) FPROTO((object *, object *)); |
| 1528 | if (coerce(&v, &w) != 0) |
| 1529 | return NULL; |
| 1530 | if ((f = v->ob_type->tp_as_number->nb_and) != NULL) |
| 1531 | x = (*f)(v, w); |
| 1532 | DECREF(v); |
| 1533 | DECREF(w); |
| 1534 | if (f != NULL) |
| 1535 | return x; |
| 1536 | } |
| 1537 | err_setstr(TypeError, "bad operand type(s) for &"); |
| 1538 | return NULL; |
| 1539 | } |
| 1540 | |
| 1541 | static object * |
| 1542 | lshift(v, w) |
| 1543 | object *v, *w; |
| 1544 | { |
| 1545 | if (v->ob_type->tp_as_number != NULL) { |
| 1546 | object *x; |
| 1547 | object * (*f) FPROTO((object *, object *)); |
| 1548 | if (coerce(&v, &w) != 0) |
| 1549 | return NULL; |
| 1550 | if ((f = v->ob_type->tp_as_number->nb_lshift) != NULL) |
| 1551 | x = (*f)(v, w); |
| 1552 | DECREF(v); |
| 1553 | DECREF(w); |
| 1554 | if (f != NULL) |
| 1555 | return x; |
| 1556 | } |
| 1557 | err_setstr(TypeError, "bad operand type(s) for <<"); |
| 1558 | return NULL; |
| 1559 | } |
| 1560 | |
| 1561 | static object * |
| 1562 | rshift(v, w) |
| 1563 | object *v, *w; |
| 1564 | { |
| 1565 | if (v->ob_type->tp_as_number != NULL) { |
| 1566 | object *x; |
| 1567 | object * (*f) FPROTO((object *, object *)); |
| 1568 | if (coerce(&v, &w) != 0) |
| 1569 | return NULL; |
| 1570 | if ((f = v->ob_type->tp_as_number->nb_rshift) != NULL) |
| 1571 | x = (*f)(v, w); |
| 1572 | DECREF(v); |
| 1573 | DECREF(w); |
| 1574 | if (f != NULL) |
| 1575 | return x; |
| 1576 | } |
| 1577 | err_setstr(TypeError, "bad operand type(s) for >>"); |
| 1578 | return NULL; |
| 1579 | } |
| 1580 | |
| 1581 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1582 | add(v, w) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1583 | object *v, *w; |
| 1584 | { |
Guido van Rossum | e6eefc2 | 1992-08-14 12:06:52 +0000 | [diff] [blame] | 1585 | if (v->ob_type->tp_as_sequence != NULL) |
| 1586 | return (*v->ob_type->tp_as_sequence->sq_concat)(v, w); |
| 1587 | else if (v->ob_type->tp_as_number != NULL) { |
Guido van Rossum | 89d55ca | 1991-07-01 18:43:13 +0000 | [diff] [blame] | 1588 | object *x; |
| 1589 | if (coerce(&v, &w) != 0) |
| 1590 | return NULL; |
| 1591 | x = (*v->ob_type->tp_as_number->nb_add)(v, w); |
| 1592 | DECREF(v); |
| 1593 | DECREF(w); |
| 1594 | return x; |
| 1595 | } |
Guido van Rossum | 34679b7 | 1993-01-26 13:33:44 +0000 | [diff] [blame] | 1596 | err_setstr(TypeError, "bad operand type(s) for +"); |
| 1597 | return NULL; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1598 | } |
| 1599 | |
| 1600 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1601 | sub(v, w) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1602 | object *v, *w; |
| 1603 | { |
Guido van Rossum | 89d55ca | 1991-07-01 18:43:13 +0000 | [diff] [blame] | 1604 | if (v->ob_type->tp_as_number != NULL) { |
| 1605 | object *x; |
| 1606 | if (coerce(&v, &w) != 0) |
| 1607 | return NULL; |
| 1608 | x = (*v->ob_type->tp_as_number->nb_subtract)(v, w); |
| 1609 | DECREF(v); |
| 1610 | DECREF(w); |
| 1611 | return x; |
| 1612 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1613 | err_setstr(TypeError, "bad operand type(s) for -"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1614 | return NULL; |
| 1615 | } |
| 1616 | |
| 1617 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1618 | mul(v, w) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1619 | object *v, *w; |
| 1620 | { |
| 1621 | typeobject *tp; |
Guido van Rossum | e6eefc2 | 1992-08-14 12:06:52 +0000 | [diff] [blame] | 1622 | tp = v->ob_type; |
| 1623 | if (tp->tp_as_number != NULL && |
| 1624 | w->ob_type->tp_as_sequence != NULL && |
| 1625 | !is_instanceobject(v)) { |
| 1626 | /* number*sequence -- swap v and w */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1627 | object *tmp = v; |
| 1628 | v = w; |
| 1629 | w = tmp; |
Guido van Rossum | e6eefc2 | 1992-08-14 12:06:52 +0000 | [diff] [blame] | 1630 | tp = v->ob_type; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1631 | } |
Guido van Rossum | 89d55ca | 1991-07-01 18:43:13 +0000 | [diff] [blame] | 1632 | if (tp->tp_as_number != NULL) { |
| 1633 | object *x; |
Guido van Rossum | e6eefc2 | 1992-08-14 12:06:52 +0000 | [diff] [blame] | 1634 | if (is_instanceobject(v)) { |
| 1635 | /* Instances of user-defined classes get their |
| 1636 | other argument uncoerced, so they may |
| 1637 | implement sequence*number as well as |
| 1638 | number*number. */ |
| 1639 | INCREF(v); |
| 1640 | INCREF(w); |
| 1641 | } |
| 1642 | else if (coerce(&v, &w) != 0) |
Guido van Rossum | 89d55ca | 1991-07-01 18:43:13 +0000 | [diff] [blame] | 1643 | return NULL; |
| 1644 | x = (*v->ob_type->tp_as_number->nb_multiply)(v, w); |
| 1645 | DECREF(v); |
| 1646 | DECREF(w); |
| 1647 | return x; |
| 1648 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1649 | if (tp->tp_as_sequence != NULL) { |
| 1650 | if (!is_intobject(w)) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1651 | err_setstr(TypeError, |
| 1652 | "can't multiply sequence with non-int"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1653 | return NULL; |
| 1654 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1655 | return (*tp->tp_as_sequence->sq_repeat) |
| 1656 | (v, (int)getintvalue(w)); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1657 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1658 | err_setstr(TypeError, "bad operand type(s) for *"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1659 | return NULL; |
| 1660 | } |
| 1661 | |
| 1662 | static object * |
Guido van Rossum | 40d0b7e | 1990-12-20 23:03:11 +0000 | [diff] [blame] | 1663 | divide(v, w) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1664 | object *v, *w; |
| 1665 | { |
Guido van Rossum | 89d55ca | 1991-07-01 18:43:13 +0000 | [diff] [blame] | 1666 | if (v->ob_type->tp_as_number != NULL) { |
| 1667 | object *x; |
| 1668 | if (coerce(&v, &w) != 0) |
| 1669 | return NULL; |
| 1670 | x = (*v->ob_type->tp_as_number->nb_divide)(v, w); |
| 1671 | DECREF(v); |
| 1672 | DECREF(w); |
| 1673 | return x; |
| 1674 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1675 | err_setstr(TypeError, "bad operand type(s) for /"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1676 | return NULL; |
| 1677 | } |
| 1678 | |
| 1679 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1680 | rem(v, w) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1681 | object *v, *w; |
| 1682 | { |
Guido van Rossum | 89d55ca | 1991-07-01 18:43:13 +0000 | [diff] [blame] | 1683 | if (v->ob_type->tp_as_number != NULL) { |
| 1684 | object *x; |
| 1685 | if (coerce(&v, &w) != 0) |
| 1686 | return NULL; |
| 1687 | x = (*v->ob_type->tp_as_number->nb_remainder)(v, w); |
| 1688 | DECREF(v); |
| 1689 | DECREF(w); |
| 1690 | return x; |
| 1691 | } |
Guido van Rossum | e537240 | 1993-03-16 12:15:04 +0000 | [diff] [blame] | 1692 | if (is_stringobject(v)) { |
| 1693 | return formatstring(v, w); |
| 1694 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1695 | err_setstr(TypeError, "bad operand type(s) for %"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1696 | return NULL; |
| 1697 | } |
| 1698 | |
| 1699 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1700 | neg(v) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1701 | object *v; |
| 1702 | { |
| 1703 | if (v->ob_type->tp_as_number != NULL) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1704 | return (*v->ob_type->tp_as_number->nb_negative)(v); |
| 1705 | err_setstr(TypeError, "bad operand type(s) for unary -"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1706 | return NULL; |
| 1707 | } |
| 1708 | |
| 1709 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1710 | pos(v) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1711 | object *v; |
| 1712 | { |
| 1713 | if (v->ob_type->tp_as_number != NULL) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1714 | return (*v->ob_type->tp_as_number->nb_positive)(v); |
| 1715 | err_setstr(TypeError, "bad operand type(s) for unary +"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1716 | return NULL; |
| 1717 | } |
| 1718 | |
| 1719 | static object * |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 1720 | invert(v) |
| 1721 | object *v; |
| 1722 | { |
Guido van Rossum | 9b1d33b | 1992-02-11 15:56:02 +0000 | [diff] [blame] | 1723 | object * (*f) FPROTO((object *)); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 1724 | if (v->ob_type->tp_as_number != NULL && |
| 1725 | (f = v->ob_type->tp_as_number->nb_invert) != NULL) |
| 1726 | return (*f)(v); |
| 1727 | err_setstr(TypeError, "bad operand type(s) for unary ~"); |
| 1728 | return NULL; |
| 1729 | } |
| 1730 | |
| 1731 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1732 | not(v) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1733 | object *v; |
| 1734 | { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1735 | int outcome = testbool(v); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1736 | object *w; |
| 1737 | if (outcome < 0) |
| 1738 | return NULL; |
| 1739 | if (outcome == 0) |
| 1740 | w = True; |
| 1741 | else |
| 1742 | w = False; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1743 | INCREF(w); |
| 1744 | return w; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1745 | } |
Guido van Rossum | 83bf35c | 1991-07-27 21:32:34 +0000 | [diff] [blame] | 1746 | /* External interface to call any callable object. The arg may be NULL. */ |
| 1747 | |
| 1748 | object * |
| 1749 | call_object(func, arg) |
| 1750 | object *func; |
| 1751 | object *arg; |
| 1752 | { |
| 1753 | if (is_instancemethodobject(func) || is_funcobject(func)) |
| 1754 | return call_function(func, arg); |
| 1755 | else |
| 1756 | return call_builtin(func, arg); |
| 1757 | } |
| 1758 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1759 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1760 | call_builtin(func, arg) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1761 | object *func; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1762 | object *arg; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1763 | { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1764 | if (is_methodobject(func)) { |
| 1765 | method meth = getmethod(func); |
| 1766 | object *self = getself(func); |
Guido van Rossum | 9c7b861 | 1991-12-16 13:04:47 +0000 | [diff] [blame] | 1767 | if (!getvarargs(func) && arg != NULL && is_tupleobject(arg)) { |
| 1768 | int size = gettuplesize(arg); |
| 1769 | if (size == 1) |
| 1770 | arg = gettupleitem(arg, 0); |
| 1771 | else if (size == 0) |
| 1772 | arg = NULL; |
| 1773 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1774 | return (*meth)(self, arg); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1775 | } |
| 1776 | if (is_classobject(func)) { |
Guido van Rossum | 9c7b861 | 1991-12-16 13:04:47 +0000 | [diff] [blame] | 1777 | if (arg != NULL && |
| 1778 | !(is_tupleobject(arg) && |
| 1779 | gettuplesize(arg) == 0)) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1780 | err_setstr(TypeError, |
| 1781 | "classobject() allows no arguments"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1782 | return NULL; |
| 1783 | } |
Guido van Rossum | 374a922 | 1991-04-04 10:40:29 +0000 | [diff] [blame] | 1784 | return newinstanceobject(func); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1785 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1786 | err_setstr(TypeError, "call of non-function"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1787 | return NULL; |
| 1788 | } |
| 1789 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1790 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1791 | call_function(func, arg) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1792 | object *func; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1793 | object *arg; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1794 | { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1795 | object *newarg = NULL; |
| 1796 | object *newlocals, *newglobals; |
| 1797 | object *co, *v; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1798 | |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1799 | if (is_instancemethodobject(func)) { |
Guido van Rossum | 9c7b861 | 1991-12-16 13:04:47 +0000 | [diff] [blame] | 1800 | int argcount; |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1801 | object *self = instancemethodgetself(func); |
| 1802 | func = instancemethodgetfunc(func); |
Guido van Rossum | 9c7b861 | 1991-12-16 13:04:47 +0000 | [diff] [blame] | 1803 | if (arg == NULL) |
| 1804 | argcount = 0; |
| 1805 | else if (is_tupleobject(arg)) |
| 1806 | argcount = gettuplesize(arg); |
| 1807 | else |
| 1808 | argcount = 1; |
| 1809 | newarg = newtupleobject(argcount + 1); |
| 1810 | if (newarg == NULL) |
| 1811 | return NULL; |
| 1812 | INCREF(self); |
| 1813 | settupleitem(newarg, 0, self); |
| 1814 | if (arg != NULL && !is_tupleobject(arg)) { |
| 1815 | INCREF(arg); |
| 1816 | settupleitem(newarg, 1, arg); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1817 | } |
| 1818 | else { |
Guido van Rossum | 9c7b861 | 1991-12-16 13:04:47 +0000 | [diff] [blame] | 1819 | int i; |
| 1820 | object *v; |
| 1821 | for (i = 0; i < argcount; i++) { |
| 1822 | v = gettupleitem(arg, i); |
| 1823 | XINCREF(v); |
| 1824 | settupleitem(newarg, i+1, v); |
| 1825 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1826 | } |
Guido van Rossum | 9c7b861 | 1991-12-16 13:04:47 +0000 | [diff] [blame] | 1827 | arg = newarg; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1828 | } |
| 1829 | else { |
| 1830 | if (!is_funcobject(func)) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1831 | err_setstr(TypeError, "call of non-function"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1832 | return NULL; |
| 1833 | } |
| 1834 | } |
| 1835 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1836 | co = getfunccode(func); |
| 1837 | if (co == NULL) { |
| 1838 | XDECREF(newarg); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1839 | return NULL; |
| 1840 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1841 | if (!is_codeobject(co)) { |
| 1842 | fprintf(stderr, "XXX Bad code\n"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1843 | abort(); |
| 1844 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1845 | newlocals = newdictobject(); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1846 | if (newlocals == NULL) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1847 | XDECREF(newarg); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1848 | return NULL; |
| 1849 | } |
| 1850 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1851 | newglobals = getfuncglobals(func); |
| 1852 | INCREF(newglobals); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1853 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1854 | v = eval_code((codeobject *)co, newglobals, newlocals, arg); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1855 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1856 | DECREF(newlocals); |
| 1857 | DECREF(newglobals); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1858 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1859 | XDECREF(newarg); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1860 | |
| 1861 | return v; |
| 1862 | } |
| 1863 | |
| 1864 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1865 | apply_subscript(v, w) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1866 | object *v, *w; |
| 1867 | { |
| 1868 | typeobject *tp = v->ob_type; |
| 1869 | if (tp->tp_as_sequence == NULL && tp->tp_as_mapping == NULL) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1870 | err_setstr(TypeError, "unsubscriptable object"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1871 | return NULL; |
| 1872 | } |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1873 | if (tp->tp_as_mapping != NULL) { |
| 1874 | return (*tp->tp_as_mapping->mp_subscript)(v, w); |
| 1875 | } |
| 1876 | else { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1877 | int i; |
| 1878 | if (!is_intobject(w)) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1879 | err_setstr(TypeError, "sequence subscript not int"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1880 | return NULL; |
| 1881 | } |
| 1882 | i = getintvalue(w); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1883 | if (i < 0) { |
| 1884 | int len = (*tp->tp_as_sequence->sq_length)(v); |
| 1885 | if (len < 0) |
| 1886 | return NULL; |
| 1887 | i += len; |
| 1888 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1889 | return (*tp->tp_as_sequence->sq_item)(v, i); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1890 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1891 | } |
| 1892 | |
| 1893 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1894 | loop_subscript(v, w) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1895 | object *v, *w; |
| 1896 | { |
| 1897 | sequence_methods *sq = v->ob_type->tp_as_sequence; |
| 1898 | int i, n; |
| 1899 | if (sq == NULL) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1900 | err_setstr(TypeError, "loop over non-sequence"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1901 | return NULL; |
| 1902 | } |
| 1903 | i = getintvalue(w); |
| 1904 | n = (*sq->sq_length)(v); |
Guido van Rossum | d014ea6 | 1992-11-26 10:30:26 +0000 | [diff] [blame] | 1905 | if (n < 0) |
| 1906 | return NULL; /* Exception */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1907 | if (i >= n) |
| 1908 | return NULL; /* End of loop */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1909 | return (*sq->sq_item)(v, i); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1910 | } |
| 1911 | |
| 1912 | static int |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1913 | slice_index(v, isize, pi) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1914 | object *v; |
| 1915 | int isize; |
| 1916 | int *pi; |
| 1917 | { |
| 1918 | if (v != NULL) { |
| 1919 | if (!is_intobject(v)) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1920 | err_setstr(TypeError, "slice index must be int"); |
| 1921 | return -1; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1922 | } |
| 1923 | *pi = getintvalue(v); |
| 1924 | if (*pi < 0) |
| 1925 | *pi += isize; |
| 1926 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1927 | return 0; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1928 | } |
| 1929 | |
| 1930 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1931 | apply_slice(u, v, w) /* return u[v:w] */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1932 | object *u, *v, *w; |
| 1933 | { |
| 1934 | typeobject *tp = u->ob_type; |
| 1935 | int ilow, ihigh, isize; |
| 1936 | if (tp->tp_as_sequence == NULL) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1937 | err_setstr(TypeError, "only sequences can be sliced"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1938 | return NULL; |
| 1939 | } |
| 1940 | ilow = 0; |
| 1941 | isize = ihigh = (*tp->tp_as_sequence->sq_length)(u); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1942 | if (isize < 0) |
| 1943 | return NULL; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1944 | if (slice_index(v, isize, &ilow) != 0) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1945 | return NULL; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1946 | if (slice_index(w, isize, &ihigh) != 0) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1947 | return NULL; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1948 | return (*tp->tp_as_sequence->sq_slice)(u, ilow, ihigh); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1949 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1950 | |
| 1951 | static int |
| 1952 | assign_subscript(w, key, v) /* w[key] = v */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1953 | object *w; |
| 1954 | object *key; |
| 1955 | object *v; |
| 1956 | { |
| 1957 | typeobject *tp = w->ob_type; |
| 1958 | sequence_methods *sq; |
| 1959 | mapping_methods *mp; |
| 1960 | int (*func)(); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1961 | if ((mp = tp->tp_as_mapping) != NULL && |
| 1962 | (func = mp->mp_ass_subscript) != NULL) { |
| 1963 | return (*func)(w, key, v); |
| 1964 | } |
| 1965 | else if ((sq = tp->tp_as_sequence) != NULL && |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1966 | (func = sq->sq_ass_item) != NULL) { |
| 1967 | if (!is_intobject(key)) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1968 | err_setstr(TypeError, |
Guido van Rossum | 98256aa | 1991-12-24 13:25:19 +0000 | [diff] [blame] | 1969 | "sequence subscript must be integer (assign or del)"); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1970 | return -1; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1971 | } |
Guido van Rossum | 98256aa | 1991-12-24 13:25:19 +0000 | [diff] [blame] | 1972 | else { |
| 1973 | int i = getintvalue(key); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1974 | if (i < 0) { |
| 1975 | int len = (*sq->sq_length)(w); |
| 1976 | if (len < 0) |
| 1977 | return -1; |
| 1978 | i += len; |
| 1979 | } |
Guido van Rossum | 98256aa | 1991-12-24 13:25:19 +0000 | [diff] [blame] | 1980 | return (*func)(w, i, v); |
| 1981 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1982 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1983 | else { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1984 | err_setstr(TypeError, |
| 1985 | "can't assign to this subscripted object"); |
| 1986 | return -1; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1987 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1988 | } |
| 1989 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1990 | static int |
| 1991 | assign_slice(u, v, w, x) /* u[v:w] = x */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1992 | object *u, *v, *w, *x; |
| 1993 | { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1994 | sequence_methods *sq = u->ob_type->tp_as_sequence; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1995 | int ilow, ihigh, isize; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1996 | if (sq == NULL) { |
| 1997 | err_setstr(TypeError, "assign to slice of non-sequence"); |
| 1998 | return -1; |
| 1999 | } |
| 2000 | if (sq == NULL || sq->sq_ass_slice == NULL) { |
| 2001 | err_setstr(TypeError, "unassignable slice"); |
| 2002 | return -1; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2003 | } |
| 2004 | ilow = 0; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2005 | isize = ihigh = (*sq->sq_length)(u); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 2006 | if (isize < 0) |
| 2007 | return -1; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2008 | if (slice_index(v, isize, &ilow) != 0) |
| 2009 | return -1; |
| 2010 | if (slice_index(w, isize, &ihigh) != 0) |
| 2011 | return -1; |
| 2012 | return (*sq->sq_ass_slice)(u, ilow, ihigh, x); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2013 | } |
| 2014 | |
| 2015 | static int |
| 2016 | cmp_exception(err, v) |
| 2017 | object *err, *v; |
| 2018 | { |
| 2019 | if (is_tupleobject(v)) { |
| 2020 | int i, n; |
| 2021 | n = gettuplesize(v); |
| 2022 | for (i = 0; i < n; i++) { |
Guido van Rossum | 32c6cdf | 1991-12-10 13:52:46 +0000 | [diff] [blame] | 2023 | /* Test recursively */ |
| 2024 | if (cmp_exception(err, gettupleitem(v, i))) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2025 | return 1; |
| 2026 | } |
| 2027 | return 0; |
| 2028 | } |
| 2029 | return err == v; |
| 2030 | } |
| 2031 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2032 | static int |
| 2033 | cmp_member(v, w) |
| 2034 | object *v, *w; |
| 2035 | { |
| 2036 | int i, n, cmp; |
| 2037 | object *x; |
| 2038 | sequence_methods *sq; |
| 2039 | /* Special case for char in string */ |
| 2040 | if (is_stringobject(w)) { |
| 2041 | register char *s, *end; |
| 2042 | register char c; |
| 2043 | if (!is_stringobject(v) || getstringsize(v) != 1) { |
| 2044 | err_setstr(TypeError, |
| 2045 | "string member test needs char left operand"); |
| 2046 | return -1; |
| 2047 | } |
| 2048 | c = getstringvalue(v)[0]; |
| 2049 | s = getstringvalue(w); |
| 2050 | end = s + getstringsize(w); |
| 2051 | while (s < end) { |
| 2052 | if (c == *s++) |
| 2053 | return 1; |
| 2054 | } |
| 2055 | return 0; |
| 2056 | } |
| 2057 | sq = w->ob_type->tp_as_sequence; |
| 2058 | if (sq == NULL) { |
| 2059 | err_setstr(TypeError, |
| 2060 | "'in' or 'not in' needs sequence right argument"); |
| 2061 | return -1; |
| 2062 | } |
| 2063 | n = (*sq->sq_length)(w); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 2064 | if (n < 0) |
| 2065 | return -1; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2066 | for (i = 0; i < n; i++) { |
| 2067 | x = (*sq->sq_item)(w, i); |
| 2068 | cmp = cmpobject(v, x); |
| 2069 | XDECREF(x); |
| 2070 | if (cmp == 0) |
| 2071 | return 1; |
| 2072 | } |
| 2073 | return 0; |
| 2074 | } |
| 2075 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2076 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2077 | cmp_outcome(op, v, w) |
Guido van Rossum | 5b7313a | 1992-04-06 13:24:57 +0000 | [diff] [blame] | 2078 | int op; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2079 | register object *v; |
| 2080 | register object *w; |
| 2081 | { |
| 2082 | register int cmp; |
| 2083 | register int res = 0; |
| 2084 | switch (op) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2085 | case IS: |
| 2086 | case IS_NOT: |
| 2087 | res = (v == w); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 2088 | if (op == (int) IS_NOT) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2089 | res = !res; |
| 2090 | break; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2091 | case IN: |
| 2092 | case NOT_IN: |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2093 | res = cmp_member(v, w); |
| 2094 | if (res < 0) |
| 2095 | return NULL; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 2096 | if (op == (int) NOT_IN) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2097 | res = !res; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2098 | break; |
| 2099 | case EXC_MATCH: |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2100 | res = cmp_exception(v, w); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2101 | break; |
| 2102 | default: |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2103 | cmp = cmpobject(v, w); |
| 2104 | switch (op) { |
| 2105 | case LT: res = cmp < 0; break; |
| 2106 | case LE: res = cmp <= 0; break; |
| 2107 | case EQ: res = cmp == 0; break; |
| 2108 | case NE: res = cmp != 0; break; |
| 2109 | case GT: res = cmp > 0; break; |
| 2110 | case GE: res = cmp >= 0; break; |
| 2111 | /* XXX no default? (res is initialized to 0 though) */ |
| 2112 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2113 | } |
| 2114 | v = res ? True : False; |
| 2115 | INCREF(v); |
| 2116 | return v; |
| 2117 | } |
| 2118 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2119 | static int |
| 2120 | import_from(locals, v, name) |
| 2121 | object *locals; |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2122 | object *v; |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 2123 | object *name; |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2124 | { |
| 2125 | object *w, *x; |
| 2126 | w = getmoduledict(v); |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 2127 | if (getstringvalue(name)[0] == '*') { |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2128 | int i; |
| 2129 | int n = getdictsize(w); |
| 2130 | for (i = 0; i < n; i++) { |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 2131 | name = getdict2key(w, i); |
| 2132 | if (name == NULL || getstringvalue(name)[0] == '_') |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2133 | continue; |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 2134 | x = dict2lookup(w, name); |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2135 | if (x == NULL) { |
| 2136 | /* XXX can't happen? */ |
Guido van Rossum | 98256aa | 1991-12-24 13:25:19 +0000 | [diff] [blame] | 2137 | err_setstr(SystemError, getstringvalue(name)); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2138 | return -1; |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2139 | } |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 2140 | if (dict2insert(locals, name, x) != 0) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2141 | return -1; |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2142 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2143 | return 0; |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2144 | } |
| 2145 | else { |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 2146 | x = dict2lookup(w, name); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2147 | if (x == NULL) { |
Guido van Rossum | 98256aa | 1991-12-24 13:25:19 +0000 | [diff] [blame] | 2148 | char buf[250]; |
Guido van Rossum | 16dfd29 | 1992-02-05 11:17:30 +0000 | [diff] [blame] | 2149 | sprintf(buf, "cannot import name %.230s", |
Guido van Rossum | 98256aa | 1991-12-24 13:25:19 +0000 | [diff] [blame] | 2150 | getstringvalue(name)); |
| 2151 | err_setstr(ImportError, buf); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2152 | return -1; |
| 2153 | } |
| 2154 | else |
Guido van Rossum | df62e44 | 1991-08-16 08:56:04 +0000 | [diff] [blame] | 2155 | return dict2insert(locals, name, x); |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2156 | } |
| 2157 | } |
| 2158 | |
| 2159 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2160 | build_class(v, w) |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2161 | object *v; /* None or tuple containing base classes */ |
| 2162 | object *w; /* dictionary */ |
| 2163 | { |
| 2164 | if (is_tupleobject(v)) { |
| 2165 | int i; |
| 2166 | for (i = gettuplesize(v); --i >= 0; ) { |
| 2167 | object *x = gettupleitem(v, i); |
| 2168 | if (!is_classobject(x)) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2169 | err_setstr(TypeError, |
| 2170 | "base is not a class object"); |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2171 | return NULL; |
| 2172 | } |
| 2173 | } |
| 2174 | } |
| 2175 | else { |
| 2176 | v = NULL; |
| 2177 | } |
| 2178 | if (!is_dictobject(w)) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2179 | err_setstr(SystemError, "build_class with non-dictionary"); |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2180 | return NULL; |
| 2181 | } |
Guido van Rossum | 7e3090c | 1991-10-20 20:26:16 +0000 | [diff] [blame] | 2182 | return newclassobject(v, w, (object *) NULL); |
Guido van Rossum | e9736fc | 1990-11-18 17:33:06 +0000 | [diff] [blame] | 2183 | } |