runtime.c 68.2 KB
Newer Older
1
2
// in principle, rt_xxx functions are called only by vm/native/viper and make assumptions about args
// py_xxx functions are safer and can be called by anyone
3
// note that rt_assign_xxx are called only from emit*, and maybe we can rename them to reflect this
4

Damien's avatar
Damien committed
5
6
7
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
8
#include <stdarg.h>
Damien's avatar
Damien committed
9
10
11
#include <string.h>
#include <assert.h>

12
#include "nlr.h"
Damien's avatar
Damien committed
13
#include "misc.h"
14
#include "mpyconfig.h"
Damien's avatar
Damien committed
15
#include "runtime.h"
16
#include "bc.h"
Damien's avatar
Damien committed
17

Damien's avatar
Damien committed
18
19
20
21
22
#if MICROPY_ENABLE_FLOAT
// for sqrt
#include <math.h>
#endif

23
#if 0 // print debugging info
24
25
#define DEBUG_PRINT (1)
#define WRITE_NATIVE (1)
26
27
28
#define DEBUG_printf(args...) printf(args)
#define DEBUG_OP_printf(args...) printf(args)
#else // don't print debugging info
29
#define DEBUG_printf(args...) (void)0
Damien's avatar
Damien committed
30
#define DEBUG_OP_printf(args...) (void)0
31
#endif
Damien's avatar
Damien committed
32
33
34
35
36
37
38
39

typedef machine_int_t py_small_int_t;

#define IS_O(o, k) (((((py_small_int_t)(o)) & 1) == 0) && (((py_obj_base_t*)(o))->kind == (k)))
#define IS_SMALL_INT(o) (((py_small_int_t)(o)) & 1)
#define FROM_SMALL_INT(o) (((py_small_int_t)(o)) >> 1)
#define TO_SMALL_INT(o) ((py_obj_t)(((o) << 1) | 1))

40
#if MICROPY_ENABLE_FLOAT
Damien's avatar
Damien committed
41
typedef machine_float_t py_float_t;
Damien's avatar
Damien committed
42
43
44
45
46
#endif

typedef enum {
    O_CONST,
    O_STR,
47
#if MICROPY_ENABLE_FLOAT
Damien's avatar
Damien committed
48
    O_FLOAT,
Damien's avatar
Damien committed
49
    O_COMPLEX,
Damien's avatar
Damien committed
50
#endif
51
    O_EXCEPTION_0,
52
    O_EXCEPTION_N,
53
54
    O_RANGE,
    O_RANGE_IT,
Damien's avatar
Damien committed
55
56
57
58
    O_FUN_0,
    O_FUN_1,
    O_FUN_2,
    O_FUN_N,
59
    O_FUN_VAR,
Damien's avatar
Damien committed
60
    O_FUN_BC,
61
    O_FUN_ASM,
62
63
    O_GEN_WRAP,
    O_GEN_INSTANCE,
Damien's avatar
Damien committed
64
    O_BOUND_METH,
65
    O_TUPLE,
Damien's avatar
Damien committed
66
    O_LIST,
67
68
    O_TUPLE_IT,
    O_LIST_IT,
Damien's avatar
Damien committed
69
70
71
    O_SET,
    O_MAP,
    O_CLASS,
72
    O_OBJ,
Damien's avatar
Damien committed
73
    O_USER,
Damien's avatar
Damien committed
74
75
76
77
78
79
80
81
82
83
84
85
86
} py_obj_kind_t;

typedef enum {
    MAP_QSTR,
    MAP_PY_OBJ,
} py_map_kind_t;

typedef struct _py_map_elem_t {
    py_obj_t key;
    py_obj_t value;
} py_map_elem_t;

typedef struct _py_map_t {
87
88
89
90
    struct {
        py_map_kind_t kind : 1;
        machine_uint_t used : (8 * BYTES_PER_WORD - 1);
    };
Damien's avatar
Damien committed
91
92
93
94
    machine_uint_t alloc;
    py_map_elem_t *table;
} py_map_t;

95
96
97
typedef struct _py_obj_base_t py_obj_base_t;

struct _py_obj_base_t {
Damien's avatar
Damien committed
98
99
100
101
    py_obj_kind_t kind;
    union {
        const char *id;
        qstr u_str;
102
#if MICROPY_ENABLE_FLOAT
Damien's avatar
Damien committed
103
104
105
106
107
        py_float_t u_float; // for O_FLOAT
        struct { // for O_COMPLEX
            py_float_t real;
            py_float_t imag;
        } u_complex;
Damien's avatar
Damien committed
108
#endif
109
110
111
        struct { // for O_EXCEPTION_0
            qstr id;
        } u_exc0;
112
113
        struct { // for O_EXCEPTION_N
            // TODO make generic object or something
114
            qstr id;
115
116
117
            int n_args;
            const void **args;
        } u_exc_n;
118
119
120
121
122
123
124
125
126
127
128
129
        struct { // for O_RANGE
            // TODO make generic object or something
            machine_int_t start;
            machine_int_t stop;
            machine_int_t step;
        } u_range;
        struct { // for O_RANGE_IT
            // TODO make generic object or something
            machine_int_t cur;
            machine_int_t stop;
            machine_int_t step;
        } u_range_it;
130
        struct { // for O_FUN_[012N], O_FUN_VAR
Damien's avatar
Damien committed
131
            int n_args;
132
            void *fun;
Damien's avatar
Damien committed
133
134
        } u_fun;
        struct { // for O_FUN_BC
135
            int n_args;
136
            uint n_state;
Damien's avatar
Damien committed
137
138
            byte *code;
        } u_fun_bc;
139
140
141
142
        struct { // for O_FUN_ASM
            int n_args;
            void *fun;
        } u_fun_asm;
143
144
145
146
147
148
149
150
151
        struct { // for O_GEN_WRAP
            int n_state;
            py_obj_base_t *fun;
        } u_gen_wrap;
        struct { // for O_GEN_INSTANCE
            py_obj_t *state;
            const byte *ip;
            py_obj_t *sp;
        } u_gen_instance;
Damien's avatar
Damien committed
152
153
154
155
        struct { // for O_BOUND_METH
            py_obj_t meth;
            py_obj_t self;
        } u_bound_meth;
156
        struct { // for O_TUPLE, O_LIST
157
158
            machine_uint_t alloc;
            machine_uint_t len;
Damien's avatar
Damien committed
159
            py_obj_t *items;
160
161
162
        } u_tuple_list;
        struct { // for O_TUPLE_IT, O_LIST_IT
            py_obj_base_t *obj;
163
            machine_uint_t cur;
164
        } u_tuple_list_it;
Damien's avatar
Damien committed
165
        struct { // for O_SET
166
167
            machine_uint_t alloc;
            machine_uint_t used;
Damien's avatar
Damien committed
168
169
170
171
            py_obj_t *table;
        } u_set;
        py_map_t u_map; // for O_MAP
        struct { // for O_CLASS
172
            py_map_t *locals;
Damien's avatar
Damien committed
173
        } u_class;
174
175
176
177
        struct { // for O_OBJ
            py_obj_base_t *class; // points to a O_CLASS object
            py_map_t *members;
        } u_obj;
Damien's avatar
Damien committed
178
179
180
181
182
        struct { // for O_USER
            const py_user_info_t *info;
            machine_uint_t data1;
            machine_uint_t data2;
        } u_user;
Damien's avatar
Damien committed
183
    };
184
};
Damien's avatar
Damien committed
185

186
187
static qstr q_append;
static qstr q_join;
188
static qstr q_format;
189
190
191
192
193
194
195
static qstr q___build_class__;
static qstr q___next__;
static qstr q_AttributeError;
static qstr q_IndexError;
static qstr q_KeyError;
static qstr q_NameError;
static qstr q_TypeError;
Damien's avatar
Damien committed
196
static qstr q_SyntaxError;
197

Damien's avatar
Damien committed
198
199
200
py_obj_t py_const_none;
py_obj_t py_const_false;
py_obj_t py_const_true;
201
py_obj_t py_const_stop_iteration;
Damien's avatar
Damien committed
202

203
// locals and globals need to be pointers because they can be the same in outer module scope
204
205
206
static py_map_t *map_locals;
static py_map_t *map_globals;
static py_map_t map_builtins;
Damien's avatar
Damien committed
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224

// approximatelly doubling primes; made with Mathematica command: Table[Prime[Floor[(1.7)^n]], {n, 3, 24}]
static int doubling_primes[] = {7, 19, 43, 89, 179, 347, 647, 1229, 2297, 4243, 7829, 14347, 26017, 47149, 84947, 152443, 273253, 488399, 869927, 1547173, 2745121, 4861607};

int get_doubling_prime_greater_or_equal_to(int x) {
    for (int i = 0; i < sizeof(doubling_primes) / sizeof(int); i++) {
        if (doubling_primes[i] >= x) {
            return doubling_primes[i];
        }
    }
    // ran out of primes in the table!
    // return something sensible, at least make it odd
    return x | 1;
}

void py_map_init(py_map_t *map, py_map_kind_t kind, int n) {
    map->kind = kind;
    map->used = 0;
225
    map->alloc = get_doubling_prime_greater_or_equal_to(n + 1);
Damien's avatar
Damien committed
226
    map->table = m_new0(py_map_elem_t, map->alloc);
Damien's avatar
Damien committed
227
228
229
230
231
232
233
234
}

py_map_t *py_map_new(py_map_kind_t kind, int n) {
    py_map_t *map = m_new(py_map_t, 1);
    py_map_init(map, kind, n);
    return map;
}

Damien's avatar
Damien committed
235
236
237
238
239
240
machine_int_t py_obj_hash(py_obj_t o_in) {
    if (o_in == py_const_false) {
        return 0; // needs to hash to same as the integer 0, since False==0
    } else if (o_in == py_const_true) {
        return 1; // needs to hash to same as the integer 1, since True==1
    } else if (IS_SMALL_INT(o_in)) {
Damien's avatar
Damien committed
241
        return FROM_SMALL_INT(o_in);
Damien's avatar
Damien committed
242
243
    } else if (IS_O(o_in, O_CONST)) {
        return (machine_int_t)o_in;
Damien's avatar
Damien committed
244
245
246
247
248
249
250
251
    } else if (IS_O(o_in, O_STR)) {
        return ((py_obj_base_t*)o_in)->u_str;
    } else {
        assert(0);
        return 0;
    }
}

Damien's avatar
Damien committed
252
253
254
255
256
257
// this function implements the '==' operator (and so the inverse of '!=')
// from the python language reference:
// "The objects need not have the same type. If both are numbers, they are converted
// to a common type. Otherwise, the == and != operators always consider objects of
// different types to be unequal."
// note also that False==0 and True==1 are true expressions
Damien's avatar
Damien committed
258
259
260
bool py_obj_equal(py_obj_t o1, py_obj_t o2) {
    if (o1 == o2) {
        return true;
Damien's avatar
Damien committed
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
    } else if (IS_SMALL_INT(o1) || IS_SMALL_INT(o2)) {
        if (IS_SMALL_INT(o1) && IS_SMALL_INT(o2)) {
            return false;
        } else {
            if (IS_SMALL_INT(o2)) {
                py_obj_t temp = o1; o1 = o2; o2 = temp;
            }
            // o1 is the SMALL_INT, o2 is not
            py_small_int_t val = FROM_SMALL_INT(o1);
            if (o2 == py_const_false) {
                return val == 0;
            } else if (o2 == py_const_true) {
                return val == 1;
            } else {
                return false;
            }
        }
Damien's avatar
Damien committed
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
    } else if (IS_O(o1, O_STR) && IS_O(o2, O_STR)) {
        return ((py_obj_base_t*)o1)->u_str == ((py_obj_base_t*)o2)->u_str;
    } else {
        assert(0);
        return false;
    }
}

py_map_elem_t* py_map_lookup_helper(py_map_t *map, py_obj_t index, bool add_if_not_found) {
    bool is_map_py_obj = (map->kind == MAP_PY_OBJ);
    machine_uint_t hash;
    if (is_map_py_obj) {
        hash = py_obj_hash(index);
    } else {
        hash = (machine_uint_t)index;
    }
    uint pos = hash % map->alloc;
    for (;;) {
        py_map_elem_t *elem = &map->table[pos];
        if (elem->key == NULL) {
            // not in table
            if (add_if_not_found) {
                if (map->used + 1 >= map->alloc) {
                    // not enough room in table, rehash it
                    int old_alloc = map->alloc;
                    py_map_elem_t *old_table = map->table;
                    map->alloc = get_doubling_prime_greater_or_equal_to(map->alloc + 1);
                    map->used = 0;
Damien's avatar
Damien committed
306
                    map->table = m_new0(py_map_elem_t, map->alloc);
Damien's avatar
Damien committed
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
                    for (int i = 0; i < old_alloc; i++) {
                        if (old_table[i].key != NULL) {
                            py_map_lookup_helper(map, old_table[i].key, true)->value = old_table[i].value;
                        }
                    }
                    m_free(old_table);
                    // restart the search for the new element
                    pos = hash % map->alloc;
                } else {
                    map->used += 1;
                    elem->key = index;
                    return elem;
                }
            } else {
                return NULL;
            }
        } else if (elem->key == index || (is_map_py_obj && py_obj_equal(elem->key, index))) {
            // found it
Damien's avatar
Damien committed
325
            /* it seems CPython does not replace the index; try x={True:'true'};x[1]='one';x
Damien's avatar
Damien committed
326
327
328
            if (add_if_not_found) {
                elem->key = index;
            }
Damien's avatar
Damien committed
329
            */
Damien's avatar
Damien committed
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
            return elem;
        } else {
            // not yet found, keep searching in this table
            pos = (pos + 1) % map->alloc;
        }
    }
}

py_map_elem_t* py_qstr_map_lookup(py_map_t *map, qstr index, bool add_if_not_found) {
    py_obj_t o = (py_obj_t)(machine_uint_t)index;
    return py_map_lookup_helper(map, o, add_if_not_found);
}

py_map_elem_t* py_map_lookup(py_obj_t o, py_obj_t index, bool add_if_not_found) {
    assert(IS_O(o, O_MAP));
    return py_map_lookup_helper(&((py_obj_base_t *)o)->u_map, index, add_if_not_found);
}

static bool fit_small_int(py_small_int_t o) {
    return true;
}

352
py_obj_t py_obj_new_int(machine_int_t value) {
Damien's avatar
Damien committed
353
354
355
    return TO_SMALL_INT(value);
}

Damien's avatar
Damien committed
356
357
358
359
360
361
362
363
364
365
366
367
368
369
py_obj_t py_obj_new_const(const char *id) {
    py_obj_base_t *o = m_new(py_obj_base_t, 1);
    o->kind = O_CONST;
    o->id = id;
    return (py_obj_t)o;
}

py_obj_t py_obj_new_str(qstr qstr) {
    py_obj_base_t *o = m_new(py_obj_base_t, 1);
    o->kind = O_STR;
    o->u_str = qstr;
    return (py_obj_t)o;
}

370
#if MICROPY_ENABLE_FLOAT
Damien's avatar
Damien committed
371
py_obj_t py_obj_new_float(py_float_t val) {
Damien's avatar
Damien committed
372
373
    py_obj_base_t *o = m_new(py_obj_base_t, 1);
    o->kind = O_FLOAT;
Damien's avatar
Damien committed
374
375
376
377
378
379
380
381
382
    o->u_float = val;
    return (py_obj_t)o;
}

py_obj_t py_obj_new_complex(py_float_t real, py_float_t imag) {
    py_obj_base_t *o = m_new(py_obj_base_t, 1);
    o->kind = O_COMPLEX;
    o->u_complex.real = real;
    o->u_complex.imag = imag;
Damien's avatar
Damien committed
383
384
385
386
    return (py_obj_t)o;
}
#endif

387
388
389
390
391
392
393
394
395
py_obj_t py_obj_new_exception_0(qstr id) {
    py_obj_base_t *o = m_new(py_obj_base_t, 1);
    o->kind = O_EXCEPTION_0;
    o->u_exc0.id = id;
    return (py_obj_t)o;
}

py_obj_t py_obj_new_exception_2(qstr id, const char *fmt, const char *s1, const char *s2) {
    py_obj_base_t *o = m_new(py_obj_base_t, 1);
396
397
398
399
400
401
402
    o->kind = O_EXCEPTION_N;
    o->u_exc_n.id = id;
    o->u_exc_n.n_args = 3;
    o->u_exc_n.args = m_new(const void*, 3);
    o->u_exc_n.args[0] = fmt;
    o->u_exc_n.args[1] = s1;
    o->u_exc_n.args[2] = s2;
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
    return (py_obj_t)o;
}

// range is a class and instances are immutable sequence objects
py_obj_t py_obj_new_range(int start, int stop, int step) {
    py_obj_base_t *o = m_new(py_obj_base_t, 1);
    o->kind = O_RANGE;
    o->u_range.start = start;
    o->u_range.stop = stop;
    o->u_range.step = step;
    return o;
}

py_obj_t py_obj_new_range_iterator(int cur, int stop, int step) {
    py_obj_base_t *o = m_new(py_obj_base_t, 1);
    o->kind = O_RANGE_IT;
    o->u_range_it.cur = cur;
    o->u_range_it.stop = stop;
    o->u_range_it.step = step;
    return o;
}

425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
py_obj_t py_obj_new_tuple_iterator(py_obj_base_t *tuple, int cur) {
    py_obj_base_t *o = m_new(py_obj_base_t, 1);
    o->kind = O_TUPLE_IT;
    o->u_tuple_list_it.obj = tuple;
    o->u_tuple_list_it.cur = cur;
    return o;
}

py_obj_t py_obj_new_list_iterator(py_obj_base_t *list, int cur) {
    py_obj_base_t *o = m_new(py_obj_base_t, 1);
    o->kind = O_LIST_IT;
    o->u_tuple_list_it.obj = list;
    o->u_tuple_list_it.cur = cur;
    return o;
}

Damien's avatar
Damien committed
441
442
443
444
445
446
447
448
449
450
451
452
py_obj_t py_obj_new_user(const py_user_info_t *info, machine_uint_t data1, machine_uint_t data2) {
    py_obj_base_t *o = m_new(py_obj_base_t, 1);
    o->kind = O_USER;
    // TODO should probably parse the info to turn strings to qstr's, and wrap functions in O_FUN_N objects
    // that'll take up some memory.  maybe we can lazily do the O_FUN_N: leave it a ptr to a C function, and
    // only when the method is looked-up do we change that to the O_FUN_N object.
    o->u_user.info = info;
    o->u_user.data1 = data1;
    o->u_user.data2 = data2;
    return o;
}

453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
const char *py_obj_get_type_str(py_obj_t o_in) {
    if (IS_SMALL_INT(o_in)) {
        return "int";
    } else {
        py_obj_base_t *o = o_in;
        switch (o->kind) {
            case O_CONST:
                if (o == py_const_none) {
                    return "NoneType";
                } else {
                    return "bool";
                }
            case O_STR:
                return "str";
#if MICROPY_ENABLE_FLOAT
            case O_FLOAT:
                return "float";
#endif
            case O_FUN_0:
            case O_FUN_1:
            case O_FUN_2:
            case O_FUN_N:
475
            case O_FUN_VAR:
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
            case O_FUN_BC:
                return "function";
            case O_GEN_INSTANCE:
                return "generator";
            case O_TUPLE:
                return "tuple";
            case O_LIST:
                return "list";
            case O_TUPLE_IT:
                return "tuple_iterator";
            case O_LIST_IT:
                return "list_iterator";
            case O_SET:
                return "set";
            case O_MAP:
                return "dict";
            case O_OBJ:
            {
                py_map_elem_t *qn = py_qstr_map_lookup(o->u_obj.class->u_class.locals, qstr_from_str_static("__qualname__"), false);
                assert(qn != NULL);
                assert(IS_O(qn->value, O_STR));
                return qstr_str(((py_obj_base_t*)qn->value)->u_str);
            }
            case O_USER:
                return o->u_user.info->type_name;
            default:
                assert(0);
                return "UnknownType";
        }
    }
}

int rt_is_true(py_obj_t arg) {
    DEBUG_OP_printf("is true %p\n", arg);
    if (IS_SMALL_INT(arg)) {
        if (FROM_SMALL_INT(arg) == 0) {
            return 0;
        } else {
            return 1;
        }
    } else if (arg == py_const_none) {
        return 0;
    } else if (arg == py_const_false) {
        return 0;
    } else if (arg == py_const_true) {
        return 1;
    } else {
        assert(0);
        return 0;
    }
}

machine_int_t py_obj_get_int(py_obj_t arg) {
    if (arg == py_const_false) {
        return 0;
    } else if (arg == py_const_true) {
        return 1;
    } else if (IS_SMALL_INT(arg)) {
        return FROM_SMALL_INT(arg);
    } else {
        assert(0);
        return 0;
    }
}

#if MICROPY_ENABLE_FLOAT
machine_float_t py_obj_get_float(py_obj_t arg) {
    if (arg == py_const_false) {
        return 0;
    } else if (arg == py_const_true) {
        return 1;
    } else if (IS_SMALL_INT(arg)) {
        return FROM_SMALL_INT(arg);
    } else if (IS_O(arg, O_FLOAT)) {
        return ((py_obj_base_t*)arg)->u_float;
    } else {
        assert(0);
        return 0;
    }
}

void py_obj_get_complex(py_obj_t arg, py_float_t *real, py_float_t *imag) {
    if (arg == py_const_false) {
        *real = 0;
        *imag = 0;
    } else if (arg == py_const_true) {
        *real = 1;
        *imag = 0;
    } else if (IS_SMALL_INT(arg)) {
        *real = FROM_SMALL_INT(arg);
        *imag = 0;
    } else if (IS_O(arg, O_FLOAT)) {
        *real = ((py_obj_base_t*)arg)->u_float;
        *imag = 0;
    } else if (IS_O(arg, O_COMPLEX)) {
        *real = ((py_obj_base_t*)arg)->u_complex.real;
        *imag = ((py_obj_base_t*)arg)->u_complex.imag;
    } else {
        assert(0);
        *real = 0;
        *imag = 0;
    }
}
#endif

qstr py_obj_get_qstr(py_obj_t arg) {
    if (IS_O(arg, O_STR)) {
        return ((py_obj_base_t*)arg)->u_str;
    } else {
        assert(0);
        return 0;
    }
}

py_obj_t *py_obj_get_array_fixed_n(py_obj_t o_in, machine_int_t n) {
    if (IS_O(o_in, O_TUPLE) || IS_O(o_in, O_LIST)) {
        py_obj_base_t *o = o_in;
        if (o->u_tuple_list.len != n) {
            nlr_jump(py_obj_new_exception_2(q_IndexError, "requested length %d but object has length %d", (void*)n, (void*)o->u_tuple_list.len));
        }
        return o->u_tuple_list.items;
    } else {
        nlr_jump(py_obj_new_exception_2(q_TypeError, "object '%s' is not a tuple or list", py_obj_get_type_str(o_in), NULL));
    }
}

Damien's avatar
Damien committed
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
void py_user_get_data(py_obj_t o, machine_uint_t *data1, machine_uint_t *data2) {
    assert(IS_O(o, O_USER));
    if (data1 != NULL) {
        *data1 = ((py_obj_base_t*)o)->u_user.data1;
    }
    if (data2 != NULL) {
        *data2 = ((py_obj_base_t*)o)->u_user.data2;
    }
}

void py_user_set_data(py_obj_t o, machine_uint_t data1, machine_uint_t data2) {
    assert(IS_O(o, O_USER));
    ((py_obj_base_t*)o)->u_user.data1 = data1;
    ((py_obj_base_t*)o)->u_user.data2 = data2;
}

618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
void printf_wrapper(void *env, const char *fmt, ...) {
    va_list args;
    va_start(args, fmt);
    vprintf(fmt, args);
    va_end(args);
}

void vstr_printf_wrapper(void *env, const char *fmt, ...) {
    va_list args;
    va_start(args, fmt);
    vstr_vprintf(env, fmt, args);
    va_end(args);
}

void py_obj_print_helper(void (*print)(void *env, const char *fmt, ...), void *env, py_obj_t o_in) {
    if (IS_SMALL_INT(o_in)) {
        print(env, "%d", (int)FROM_SMALL_INT(o_in));
    } else {
        py_obj_base_t *o = o_in;
        switch (o->kind) {
            case O_CONST:
                print(env, "%s", o->id);
                break;
            case O_STR:
                // TODO need to escape chars etc
                print(env, "'%s'", qstr_str(o->u_str));
                break;
#if MICROPY_ENABLE_FLOAT
            case O_FLOAT:
                print(env, "%.8g", o->u_float);
                break;
            case O_COMPLEX:
                if (o->u_complex.real == 0) {
                    print(env, "%.8gj", o->u_complex.imag);
                } else {
                    print(env, "(%.8g+%.8gj)", o->u_complex.real, o->u_complex.imag);
                }
                break;
#endif
            case O_EXCEPTION_0:
                print(env, "%s", qstr_str(o->u_exc0.id));
                break;
            case O_EXCEPTION_N:
                print(env, "%s: ", qstr_str(o->u_exc_n.id));
                print(env, o->u_exc_n.args[0], o->u_exc_n.args[1], o->u_exc_n.args[2]);
                break;
            case O_GEN_INSTANCE:
                print(env, "<generator object 'fun-name' at %p>", o);
                break;
            case O_TUPLE:
                print(env, "(");
                for (int i = 0; i < o->u_tuple_list.len; i++) {
                    if (i > 0) {
                        print(env, ", ");
                    }
                    py_obj_print_helper(print, env, o->u_tuple_list.items[i]);
                }
                if (o->u_tuple_list.len == 1) {
                    print(env, ",");
                }
                print(env, ")");
                break;
            case O_LIST:
                print(env, "[");
                for (int i = 0; i < o->u_tuple_list.len; i++) {
                    if (i > 0) {
                        print(env, ", ");
                    }
                    py_obj_print_helper(print, env, o->u_tuple_list.items[i]);
                }
                print(env, "]");
                break;
            case O_SET:
            {
                bool first = true;
                print(env, "{");
                for (int i = 0; i < o->u_set.alloc; i++) {
                    if (o->u_set.table[i] != NULL) {
                        if (!first) {
                            print(env, ", ");
                        }
                        first = false;
                        py_obj_print_helper(print, env, o->u_set.table[i]);
                    }
                }
                print(env, "}");
                break;
            }
            case O_MAP:
            {
                bool first = true;
                print(env, "{");
                for (int i = 0; i < o->u_map.alloc; i++) {
                    if (o->u_map.table[i].key != NULL) {
                        if (!first) {
                            print(env, ", ");
                        }
                        first = false;
                        py_obj_print_helper(print, env, o->u_map.table[i].key);
                        print(env, ": ");
                        py_obj_print_helper(print, env, o->u_map.table[i].value);
                    }
                }
                print(env, "}");
                break;
            }
            case O_USER:
                o->u_user.info->print(o_in);
                break;
            default:
                print(env, "<? %d>", o->kind);
                assert(0);
        }
    }
}

734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
py_obj_t rt_str_join(py_obj_t self_in, py_obj_t arg) {
    assert(IS_O(self_in, O_STR));
    py_obj_base_t *self = self_in;
    int required_len = strlen(qstr_str(self->u_str));

    // process arg, count required chars
    if (!IS_O(arg, O_TUPLE) && !IS_O(arg, O_LIST)) {
        goto bad_arg;
    }
    py_obj_base_t *tuple_list = arg;
    for (int i = 0; i < tuple_list->u_tuple_list.len; i++) {
        if (!IS_O(tuple_list->u_tuple_list.items[i], O_STR)) {
            goto bad_arg;
        }
        required_len += strlen(qstr_str(((py_obj_base_t*)tuple_list->u_tuple_list.items[i])->u_str));
    }

    // make joined string
    char *joined_str = m_new(char, required_len + 1);
    joined_str[0] = 0;
    for (int i = 0; i < tuple_list->u_tuple_list.len; i++) {
        const char *s2 = qstr_str(((py_obj_base_t*)tuple_list->u_tuple_list.items[i])->u_str);
        if (i > 0) {
            strcat(joined_str, qstr_str(self->u_str));
        }
        strcat(joined_str, s2);
    }
    return py_obj_new_str(qstr_from_str_take(joined_str));

bad_arg:
    nlr_jump(py_obj_new_exception_2(q_TypeError, "?str.join expecting a list of str's", NULL, NULL));
}

767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
py_obj_t rt_str_format(int n_args, const py_obj_t* args) {
    assert(IS_O(args[0], O_STR));
    py_obj_base_t *self = args[0];

    const char *str = qstr_str(self->u_str);
    int arg_i = 1;
    vstr_t *vstr = vstr_new();
    for (; *str; str++) {
        if (*str == '{') {
            str++;
            if (*str == '{') {
                vstr_add_char(vstr, '{');
            } else if (*str == '}') {
                if (arg_i >= n_args) {
                    nlr_jump(py_obj_new_exception_2(q_IndexError, "tuple index out of range", NULL, NULL));
                }
                py_obj_print_helper(vstr_printf_wrapper, vstr, args[arg_i]);
                arg_i++;
            }
        } else {
            vstr_add_char(vstr, *str);
        }
    }

    return py_obj_new_str(qstr_from_str_take(vstr->buf));
}

794
py_obj_t rt_list_append(py_obj_t self_in, py_obj_t arg) {
Damien's avatar
Damien committed
795
796
    assert(IS_O(self_in, O_LIST));
    py_obj_base_t *self = self_in;
797
798
799
    if (self->u_tuple_list.len >= self->u_tuple_list.alloc) {
        self->u_tuple_list.alloc *= 2;
        self->u_tuple_list.items = m_renew(py_obj_t, self->u_tuple_list.items, self->u_tuple_list.alloc);
Damien's avatar
Damien committed
800
    }
801
    self->u_tuple_list.items[self->u_tuple_list.len++] = arg;
Damien's avatar
Damien committed
802
    return py_const_none; // return None, as per CPython
Damien's avatar
Damien committed
803
804
}

805
806
807
808
809
810
811
812
813
py_obj_t rt_gen_instance_next(py_obj_t self_in) {
    py_obj_t ret = rt_iternext(self_in);
    if (ret == py_const_stop_iteration) {
        nlr_jump(py_obj_new_exception_0(qstr_from_str_static("StopIteration")));
    } else {
        return ret;
    }
}

Damien's avatar
Damien committed
814
typedef enum {
815
    PY_CODE_NONE,
Damien's avatar
Damien committed
816
    PY_CODE_BYTE,
817
818
    PY_CODE_NATIVE,
    PY_CODE_INLINE_ASM,
Damien's avatar
Damien committed
819
820
821
822
823
} py_code_kind_t;

typedef struct _py_code_t {
    py_code_kind_t kind;
    int n_args;
824
825
826
    int n_locals;
    int n_stack;
    bool is_generator;
Damien's avatar
Damien committed
827
828
829
830
831
    union {
        struct {
            byte *code;
            uint len;
        } u_byte;
832
833
834
835
        struct {
            py_fun_t fun;
        } u_native;
        struct {
836
            void *fun;
837
        } u_inline_asm;
Damien's avatar
Damien committed
838
839
840
841
842
843
    };
} py_code_t;

static int next_unique_code_id;
static py_code_t *unique_codes;

844
py_obj_t fun_str_join;
845
py_obj_t fun_str_format;
Damien's avatar
Damien committed
846
py_obj_t fun_list_append;
847
py_obj_t fun_gen_instance_next;
Damien's avatar
Damien committed
848

Damien's avatar
Damien committed
849
850
851
852
853
854
855
856
py_obj_t py_builtin___repl_print__(py_obj_t o) {
    if (o != py_const_none) {
        py_obj_print(o);
        printf("\n");
    }
    return py_const_none;
}

857
858
859
860
861
862
863
864
865
866
867
868
py_obj_t py_builtin_print(int n_args, const py_obj_t* args) {
    for (int i = 0; i < n_args; i++) {
        if (i > 0) {
            printf(" ");
        }
        if (IS_O(args[i], O_STR)) {
            // special case, print string raw
            printf("%s", qstr_str(((py_obj_base_t*)args[i])->u_str));
        } else {
            // print the object Python style
            py_obj_print(args[i]);
        }
Damien's avatar
Damien committed
869
    }
870
    printf("\n");
Damien's avatar
Damien committed
871
872
873
874
875
    return py_const_none;
}

py_obj_t py_builtin_len(py_obj_t o_in) {
    py_small_int_t len = 0;
876
    if (IS_O(o_in, O_TUPLE) || IS_O(o_in, O_LIST)) {
Damien's avatar
Damien committed
877
        py_obj_base_t *o = o_in;
878
        len = o->u_tuple_list.len;
Damien's avatar
Damien committed
879
880
881
882
883
884
885
886
887
    } else if (IS_O(o_in, O_MAP)) {
        py_obj_base_t *o = o_in;
        len = o->u_map.used;
    } else {
        assert(0);
    }
    return TO_SMALL_INT(len);
}

Damien's avatar
Damien committed
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
py_obj_t py_builtin_abs(py_obj_t o_in) {
    if (IS_SMALL_INT(o_in)) {
        py_small_int_t val = FROM_SMALL_INT(o_in);
        if (val < 0) {
            val = -val;
        }
        return TO_SMALL_INT(val);
    } else if (IS_O(o_in, O_FLOAT)) {
        py_obj_base_t *o = o_in;
        // TODO check for NaN etc
        if (o->u_float < 0) {
            return py_obj_new_float(-o->u_float);
        } else {
            return o_in;
        }
    } else if (IS_O(o_in, O_COMPLEX)) {
        py_obj_base_t *o = o_in;
        return py_obj_new_float(sqrt(o->u_complex.real*o->u_complex.real + o->u_complex.imag*o->u_complex.imag));
    } else {
        assert(0);
        return py_const_none;
    }
}

912
913
py_obj_t py_builtin___build_class__(py_obj_t o_class_fun, py_obj_t o_class_name) {
    // we differ from CPython: we set the new __locals__ object here
914
    py_map_t *old_locals = map_locals;
915
    py_map_t *class_locals = py_map_new(MAP_QSTR, 0);
916
    map_locals = class_locals;
917
918
919
920
921
922
923
924

    // call the class code
    rt_call_function_1(o_class_fun, (py_obj_t)0xdeadbeef);

    // restore old __locals__ object
    map_locals = old_locals;

    // create and return the new class
Damien's avatar
Damien committed
925
926
    py_obj_base_t *o = m_new(py_obj_base_t, 1);
    o->kind = O_CLASS;
927
    o->u_class.locals = class_locals;
Damien's avatar
Damien committed
928
929
930
    return o;
}

931
py_obj_t py_builtin_range(py_obj_t o_arg) {
932
    return py_obj_new_range(0, py_obj_get_int(o_arg), 1);
933
934
}

935
#ifdef WRITE_NATIVE
Damien's avatar
Damien committed
936
FILE *fp_native = NULL;
937
#endif
Damien's avatar
Damien committed
938

939
void rt_init(void) {
Damien's avatar
Damien committed
940
    q_append = qstr_from_str_static("append");
941
    q_join = qstr_from_str_static("join");
942
    q_format = qstr_from_str_static("format");
Damien's avatar
Damien committed
943
    q___build_class__ = qstr_from_str_static("__build_class__");
944
    q___next__ = qstr_from_str_static("__next__");
945
    q_AttributeError = qstr_from_str_static("AttributeError");
946
    q_IndexError = qstr_from_str_static("IndexError");
Damien's avatar
Damien committed
947
    q_KeyError = qstr_from_str_static("KeyError");
948
949
    q_NameError = qstr_from_str_static("NameError");
    q_TypeError = qstr_from_str_static("TypeError");
Damien's avatar
Damien committed
950
    q_SyntaxError = qstr_from_str_static("SyntaxError");
Damien's avatar
Damien committed
951
952
953
954

    py_const_none = py_obj_new_const("None");
    py_const_false = py_obj_new_const("False");
    py_const_true = py_obj_new_const("True");
955
    py_const_stop_iteration = py_obj_new_const("StopIteration");
Damien's avatar
Damien committed
956

957
958
959
    // locals = globals for outer module (see Objects/frameobject.c/PyFrame_New())
    map_locals = map_globals = py_map_new(MAP_QSTR, 1);
    py_qstr_map_lookup(map_globals, qstr_from_str_static("__name__"), true)->value = py_obj_new_str(qstr_from_str_static("__main__"));
Damien's avatar
Damien committed
960
961

    py_map_init(&map_builtins, MAP_QSTR, 3);
Damien's avatar
Damien committed
962
    py_qstr_map_lookup(&map_builtins, qstr_from_str_static("__repl_print__"), true)->value = rt_make_function_1(py_builtin___repl_print__);
963
    py_qstr_map_lookup(&map_builtins, qstr_from_str_static("print"), true)->value = rt_make_function_var(0, py_builtin_print);
964
    py_qstr_map_lookup(&map_builtins, qstr_from_str_static("len"), true)->value = rt_make_function_1(py_builtin_len);
Damien's avatar
Damien committed
965
    py_qstr_map_lookup(&map_builtins, qstr_from_str_static("abs"), true)->value = rt_make_function_1(py_builtin_abs);
Damien's avatar
Damien committed
966
    py_qstr_map_lookup(&map_builtins, q___build_class__, true)->value = rt_make_function_2(py_builtin___build_class__);
967
    py_qstr_map_lookup(&map_builtins, qstr_from_str_static("range"), true)->value = rt_make_function_1(py_builtin_range);
Damien's avatar
Damien committed
968

Damien's avatar
Damien committed
969
    next_unique_code_id = 2; // 1 is reserved for the __main__ module scope
Damien's avatar
Damien committed
970
971
    unique_codes = NULL;

972
    fun_str_join = rt_make_function_2(rt_str_join);
973
    fun_str_format = rt_make_function_var(1, rt_str_format);
974
    fun_list_append = rt_make_function_2(rt_list_append);
975
    fun_gen_instance_next = rt_make_function_1(rt_gen_instance_next);
Damien's avatar
Damien committed
976

977
#ifdef WRITE_NATIVE
Damien's avatar
Damien committed
978
    fp_native = fopen("out-native", "wb");
979
#endif
Damien's avatar
Damien committed
980
981
}

982
void rt_deinit(void) {
983
#ifdef WRITE_NATIVE
Damien's avatar
Damien committed
984
985
986
    if (fp_native != NULL) {
        fclose(fp_native);
    }
987
#endif
Damien's avatar
Damien committed
988
989
}

Damien's avatar
Damien committed
990
991
992
993
994
995
int rt_get_unique_code_id(bool is_main_module) {
    if (is_main_module) {
        return 1;
    } else {
        return next_unique_code_id++;
    }
Damien's avatar
Damien committed
996
997
}

998
static void alloc_unique_codes(void) {
Damien's avatar
Damien committed
999
    if (unique_codes == NULL) {
1000
        unique_codes = m_new(py_code_t, next_unique_code_id + 10); // XXX hack until we fix the REPL allocation problem
For faster browsing, not all history is shown. View entire blame