runtime.c 69 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

18
#if 0 // print debugging info
19
#define DEBUG_PRINT (1)
20
#define WRITE_CODE (1)
21
22
23
#define DEBUG_printf(args...) printf(args)
#define DEBUG_OP_printf(args...) printf(args)
#else // don't print debugging info
24
#define DEBUG_printf(args...) (void)0
Damien's avatar
Damien committed
25
#define DEBUG_OP_printf(args...) (void)0
26
#endif
Damien's avatar
Damien committed
27
28
29
30
31
32
33
34

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))

35
#if MICROPY_ENABLE_FLOAT
Damien's avatar
Damien committed
36
typedef machine_float_t py_float_t;
Damien's avatar
Damien committed
37
38
39
40
41
#endif

typedef enum {
    O_CONST,
    O_STR,
42
#if MICROPY_ENABLE_FLOAT
Damien's avatar
Damien committed
43
    O_FLOAT,
Damien's avatar
Damien committed
44
    O_COMPLEX,
Damien's avatar
Damien committed
45
#endif
46
    O_EXCEPTION_0,
47
    O_EXCEPTION_N,
48
49
    O_RANGE,
    O_RANGE_IT,
Damien's avatar
Damien committed
50
51
52
53
    O_FUN_0,
    O_FUN_1,
    O_FUN_2,
    O_FUN_N,
54
    O_FUN_VAR,
Damien's avatar
Damien committed
55
    O_FUN_BC,
56
    O_FUN_ASM,
57
58
    O_GEN_WRAP,
    O_GEN_INSTANCE,
Damien's avatar
Damien committed
59
    O_BOUND_METH,
60
    O_TUPLE,
Damien's avatar
Damien committed
61
    O_LIST,
62
63
    O_TUPLE_IT,
    O_LIST_IT,
Damien's avatar
Damien committed
64
65
66
    O_SET,
    O_MAP,
    O_CLASS,
67
    O_OBJ,
Damien's avatar
Damien committed
68
    O_USER,
Damien's avatar
Damien committed
69
70
71
72
73
74
75
76
77
78
79
80
81
} 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 {
82
83
84
85
    struct {
        py_map_kind_t kind : 1;
        machine_uint_t used : (8 * BYTES_PER_WORD - 1);
    };
Damien's avatar
Damien committed
86
87
88
89
    machine_uint_t alloc;
    py_map_elem_t *table;
} py_map_t;

90
91
92
typedef struct _py_obj_base_t py_obj_base_t;

struct _py_obj_base_t {
Damien's avatar
Damien committed
93
94
95
96
    py_obj_kind_t kind;
    union {
        const char *id;
        qstr u_str;
97
#if MICROPY_ENABLE_FLOAT
Damien's avatar
Damien committed
98
99
100
101
102
        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
103
#endif
104
105
106
        struct { // for O_EXCEPTION_0
            qstr id;
        } u_exc0;
107
108
        struct { // for O_EXCEPTION_N
            // TODO make generic object or something
109
            qstr id;
110
111
112
            int n_args;
            const void **args;
        } u_exc_n;
113
114
115
116
117
118
119
120
121
122
123
124
        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;
125
        struct { // for O_FUN_[012N], O_FUN_VAR
Damien's avatar
Damien committed
126
            int n_args;
127
            void *fun;
Damien's avatar
Damien committed
128
129
        } u_fun;
        struct { // for O_FUN_BC
130
            int n_args;
131
            uint n_state;
Damien's avatar
Damien committed
132
133
            byte *code;
        } u_fun_bc;
134
135
136
137
        struct { // for O_FUN_ASM
            int n_args;
            void *fun;
        } u_fun_asm;
138
139
140
141
142
143
144
145
146
        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
147
148
149
150
        struct { // for O_BOUND_METH
            py_obj_t meth;
            py_obj_t self;
        } u_bound_meth;
151
        struct { // for O_TUPLE, O_LIST
152
153
            machine_uint_t alloc;
            machine_uint_t len;
Damien's avatar
Damien committed
154
            py_obj_t *items;
155
156
157
        } u_tuple_list;
        struct { // for O_TUPLE_IT, O_LIST_IT
            py_obj_base_t *obj;
158
            machine_uint_t cur;
159
        } u_tuple_list_it;
Damien's avatar
Damien committed
160
        struct { // for O_SET
161
162
            machine_uint_t alloc;
            machine_uint_t used;
Damien's avatar
Damien committed
163
164
165
166
            py_obj_t *table;
        } u_set;
        py_map_t u_map; // for O_MAP
        struct { // for O_CLASS
167
            py_map_t *locals;
Damien's avatar
Damien committed
168
        } u_class;
169
170
171
172
        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
173
174
175
176
177
        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
178
    };
179
};
Damien's avatar
Damien committed
180

181
182
static qstr q_append;
static qstr q_join;
183
static qstr q_format;
184
185
186
187
188
189
190
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
191
static qstr q_SyntaxError;
192

Damien's avatar
Damien committed
193
194
195
py_obj_t py_const_none;
py_obj_t py_const_false;
py_obj_t py_const_true;
196
py_obj_t py_const_stop_iteration;
Damien's avatar
Damien committed
197

198
// locals and globals need to be pointers because they can be the same in outer module scope
199
200
201
static py_map_t *map_locals;
static py_map_t *map_globals;
static py_map_t map_builtins;
Damien's avatar
Damien committed
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219

// 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;
220
    map->alloc = get_doubling_prime_greater_or_equal_to(n + 1);
Damien's avatar
Damien committed
221
    map->table = m_new0(py_map_elem_t, map->alloc);
Damien's avatar
Damien committed
222
223
224
225
226
227
228
229
}

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
230
231
232
233
234
235
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
236
        return FROM_SMALL_INT(o_in);
Damien's avatar
Damien committed
237
238
    } else if (IS_O(o_in, O_CONST)) {
        return (machine_int_t)o_in;
Damien's avatar
Damien committed
239
240
241
242
243
244
245
246
    } 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
247
248
249
250
251
252
// 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
253
254
255
bool py_obj_equal(py_obj_t o1, py_obj_t o2) {
    if (o1 == o2) {
        return true;
Damien's avatar
Damien committed
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
    } 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
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
    } 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
301
                    map->table = m_new0(py_map_elem_t, map->alloc);
Damien's avatar
Damien committed
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
                    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
320
            /* it seems CPython does not replace the index; try x={True:'true'};x[1]='one';x
Damien's avatar
Damien committed
321
322
323
            if (add_if_not_found) {
                elem->key = index;
            }
Damien's avatar
Damien committed
324
            */
Damien's avatar
Damien committed
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
            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;
}

347
py_obj_t py_obj_new_int(machine_int_t value) {
Damien's avatar
Damien committed
348
349
350
    return TO_SMALL_INT(value);
}

Damien's avatar
Damien committed
351
352
353
354
355
356
357
358
359
360
361
362
363
364
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;
}

365
#if MICROPY_ENABLE_FLOAT
Damien's avatar
Damien committed
366
py_obj_t py_obj_new_float(py_float_t val) {
Damien's avatar
Damien committed
367
368
    py_obj_base_t *o = m_new(py_obj_base_t, 1);
    o->kind = O_FLOAT;
Damien's avatar
Damien committed
369
370
371
372
373
374
375
376
377
    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
378
379
380
381
    return (py_obj_t)o;
}
#endif

382
383
384
385
386
387
388
389
390
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);
391
392
393
394
395
396
397
    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;
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
    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;
}

420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
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
436
437
438
439
440
441
442
443
444
445
446
447
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;
}

448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
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:
470
            case O_FUN_VAR:
471
472
473
474
475
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
            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
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
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;
}

613
614
615
616
617
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
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);
        }
    }
}

729
730
731
732
733
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
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));
}

762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
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));
}

789
py_obj_t rt_list_append(py_obj_t self_in, py_obj_t arg) {
Damien's avatar
Damien committed
790
791
    assert(IS_O(self_in, O_LIST));
    py_obj_base_t *self = self_in;
792
793
794
    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
795
    }
796
    self->u_tuple_list.items[self->u_tuple_list.len++] = arg;
Damien's avatar
Damien committed
797
    return py_const_none; // return None, as per CPython
Damien's avatar
Damien committed
798
799
}

800
801
802
803
804
805
806
807
808
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
809
typedef enum {
810
    PY_CODE_NONE,
Damien's avatar
Damien committed
811
    PY_CODE_BYTE,
812
813
    PY_CODE_NATIVE,
    PY_CODE_INLINE_ASM,
Damien's avatar
Damien committed
814
815
816
817
818
} py_code_kind_t;

typedef struct _py_code_t {
    py_code_kind_t kind;
    int n_args;
819
820
821
    int n_locals;
    int n_stack;
    bool is_generator;
Damien's avatar
Damien committed
822
823
824
825
826
    union {
        struct {
            byte *code;
            uint len;
        } u_byte;
827
828
829
830
        struct {
            py_fun_t fun;
        } u_native;
        struct {
831
            void *fun;
832
        } u_inline_asm;
Damien's avatar
Damien committed
833
834
835
836
837
838
    };
} py_code_t;

static int next_unique_code_id;
static py_code_t *unique_codes;

839
py_obj_t fun_str_join;
840
py_obj_t fun_str_format;
Damien's avatar
Damien committed
841
py_obj_t fun_list_append;
842
py_obj_t fun_gen_instance_next;
Damien's avatar
Damien committed
843

Damien's avatar
Damien committed
844
845
846
847
848
849
850
851
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;
}

852
853
854
855
856
857
858
859
860
861
862
863
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
864
    }
865
    printf("\n");
Damien's avatar
Damien committed
866
867
868
869
870
    return py_const_none;
}

py_obj_t py_builtin_len(py_obj_t o_in) {
    py_small_int_t len = 0;
871
872
873
874
    if (IS_O(o_in, O_STR)) {
        py_obj_base_t *o = o_in;
        len = strlen(qstr_str(o->u_str));
    } else if (IS_O(o_in, O_TUPLE) || IS_O(o_in, O_LIST)) {
Damien's avatar
Damien committed
875
        py_obj_base_t *o = o_in;
876
        len = o->u_tuple_list.len;
Damien's avatar
Damien committed
877
878
879
880
881
882
883
884
885
    } 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
886
887
888
889
890
891
892
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);
893
#if MICROPY_ENABLE_FLOAT
Damien's avatar
Damien committed
894
895
896
897
898
899
900
901
902
903
    } 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;
904
905
        return py_obj_new_float(machine_sqrt(o->u_complex.real*o->u_complex.real + o->u_complex.imag*o->u_complex.imag));
#endif
Damien's avatar
Damien committed
906
907
908
909
910
911
    } 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
936
#ifdef WRITE_CODE
FILE *fp_write_code = 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
978
#ifdef WRITE_CODE
    fp_write_code = fopen("out-code", "wb");
979
#endif
Damien's avatar
Damien committed
980
981
}

982
void rt_deinit(void) {
983
984
985
#ifdef WRITE_CODE
    if (fp_write_code != NULL) {
        fclose(fp_write_code);
Damien's avatar
Damien committed
986
    }
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
1001
1002
1003
        for (int i = 0; i < next_unique_code_id; i++) {
            unique_codes[i].kind = PY_CODE_NONE;
        }
Damien's avatar
Damien committed
1004
    }
1005
1006
}

1007
void rt_assign_byte_code(int unique_code_id, byte *code, uint len, int n_args, int n_locals, int n_stack, bool is_generator) {
1008
1009
1010
1011
1012
    alloc_unique_codes();

    assert(unique_code_id < next_unique_code_id);
    unique_codes[unique_code_id].kind = PY_CODE_BYTE;
    unique_codes[unique_code_id].n_args = n_args;
1013
1014
1015
    unique_codes[unique_code_id].n_locals = n_locals;
    unique_codes[unique_code_id].n_stack = n_stack;
    unique_codes[unique_code_id].is_generator = is_generator;
1016
1017
1018
    unique_codes[unique_code_id].u_byte.code = code;
    unique_codes[unique_code_id].u_byte.len = len;

1019
1020
1021
    printf("byte code: %d bytes\n", len);

#ifdef DEBUG_PRINT
1022
    DEBUG_printf("assign byte code: id=%d code=%p len=%u n_args=%d\n", unique_code_id, code, len, n_args);
1023
1024
1025
1026
1027
1028
1029
    for (int i = 0; i < 128 && i < len; i++) {
        if (i > 0 && i % 16 == 0) {
            DEBUG_printf("\n");
        }
        DEBUG_printf(" %02x", code[i]);
    }
    DEBUG_printf("\n");
1030
1031
    extern void py_show_byte_code(const byte *code, int len);
    py_show_byte_code(code, len);
1032
1033
1034
1035
1036
1037
1038
1039

#ifdef WRITE_CODE
    if (fp_write_code != NULL) {
        fwrite(code, len, 1, fp_write_code);
        fflush(fp_write_code);
    }
#endif
#endif
1040
1041
1042
1043
1044
}

void rt_assign_native_code(int unique_code_id, py_fun_t fun, uint len, int n_args) {
    alloc_unique_codes();

1045
    assert(1 <= unique_code_id && unique_code_id < next_unique_code_id);
Damien's avatar
Damien committed
1046
1047
    unique_codes[unique_code_id].kind = PY_CODE_NATIVE;
    unique_codes[unique_code_id].n_args = n_args;
1048
1049
1050
    unique_codes[unique_code_id].n_locals = 0;
    unique_codes[unique_code_id].n_stack = 0;
    unique_codes[unique_code_id].is_generator = false;
Damien's avatar
Damien committed
1051
1052
    unique_codes[unique_code_id].u_native.fun = fun;

1053
1054
    printf("native code: %d bytes\n", len);

1055
#ifdef DEBUG_PRINT
Damien's avatar
Damien committed
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
    DEBUG_printf("assign native code: id=%d fun=%p len=%u n_args=%d\n", unique_code_id, fun, len, n_args);
    byte *fun_data = (byte*)(((machine_uint_t)fun) & (~1)); // need to clear lower bit in case it's thumb code
    for (int i = 0; i < 128 && i < len; i++) {
        if (i > 0 && i % 16 == 0) {
            DEBUG_printf("\n");
        }
        DEBUG_printf(" %02x", fun_data[i]);
    }
    DEBUG_printf("\n");

1066
1067
1068
1069
#ifdef WRITE_CODE
    if (fp_write_code != NULL) {
        fwrite(fun_data, len, 1, fp_write_code);
        fflush(fp_write_code);
Damien's avatar
Damien committed
1070
    }
1071
1072
#endif
#endif
Damien's avatar
Damien committed
1073
1074
}

1075
1076
1077
1078
1079
void rt_assign_inline_asm_code(int unique_code_id, py_fun_t fun, uint len, int n_args) {
    alloc_unique_codes();

    assert(1 <= unique_code_id && unique_code_id < next_unique_code_id);
    unique_codes[unique_code_id].kind = PY_CODE_INLINE_ASM;
Damien's avatar
Damien committed
1080
    unique_codes[unique_code_id].n_args = n_args;
1081
1082
1083
    unique_codes[unique_code_id].n_locals = 0;
    unique_codes[unique_code_id].n_stack = 0;
    unique_codes[unique_code_id].is_generator = false;
1084
    unique_codes[unique_code_id].u_inline_asm.fun = fun;
Damien's avatar
Damien committed
1085

1086
#ifdef DEBUG_PRINT
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
    DEBUG_printf("assign inline asm code: id=%d fun=%p len=%u n_args=%d\n", unique_code_id, fun, len, n_args);
    byte *fun_data = (byte*)(((machine_uint_t)fun) & (~1)); // need to clear lower bit in case it's thumb code
    for (int i = 0; i < 128 && i < len; i++) {
        if (i > 0 && i % 16 == 0) {
            DEBUG_printf("\n");
        }
        DEBUG_printf(" %02x", fun_data[i]);
    }
    DEBUG_printf("\n");

1097
1098
1099
#ifdef WRITE_CODE
    if (fp_write_code != NULL) {
        fwrite(fun_data, len, 1, fp_write_code);
1100
    }
1101
1102
#endif
#endif
Damien's avatar
Damien committed
1103
1104
}

1105
1106
1107
1108
1109
1110
1111
1112
1113
bool py_obj_is_callable(py_obj_t o_in) {
    if (IS_SMALL_INT(o_in)) {
        return false;
    } else {
        py_obj_base_t *o = o_in;
        switch (o->kind) {
            case O_FUN_0:
            case O_FUN_1:
            case O_FUN_2:
1114
            case O_FUN_VAR:
1115
1116
1117
            case O_FUN_N:
            case O_FUN_BC:
            case O_FUN_ASM:
1118
            // what about O_CLASS, and an O_OBJ that has a __call__ method?
1119
1120
1121
1122
1123
1124
1125
                return true;
            default:
                return false;
        }
    }
}

Damien's avatar
Damien committed
1126
void py_obj_print(py_obj_t o_in) {
1127
    py_obj_print_helper(printf_wrapper, NULL, o_in);
Damien's avatar
Damien committed
1128
1129
}

Damien's avatar
Damien committed
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
#define PARSE_DEC_IN_INTG (1)
#define PARSE_DEC_IN_FRAC (2)
#define PARSE_DEC_IN_EXP  (3)

py_obj_t rt_load_const_dec(qstr qstr) {
#if MICROPY_ENABLE_FLOAT
    DEBUG_OP_printf("load '%s'\n", qstr_str(qstr));
    const char *s = qstr_str(qstr);
    int in = PARSE_DEC_IN_INTG;
    py_float_t dec_val = 0;
    bool exp_neg = false;
    int exp_val = 0;
    int exp_extra = 0;
    bool imag = false;
    for (; *s; s++) {
        int dig = *s;
        if ('0' <= dig && dig <= '9') {
            dig -= '0';
            if (in == PARSE_DEC_IN_EXP) {
                exp_val = 10 * exp_val + dig;
            } else {
                dec_val = 10 * dec_val + dig;
                if (in == PARSE_DEC_IN_FRAC) {
                    exp_extra -= 1;
                }
            }
        } else if (in == PARSE_DEC_IN_INTG && dig == '.') {
            in = PARSE_DEC_IN_FRAC;
        } else if (in != PARSE_DEC_IN_EXP && (dig == 'E' || dig == 'e')) {
            in = PARSE_DEC_IN_EXP;
            if (s[1] == '+') {
                s++;
            } else if (s[1] == '-') {
                s++;
                exp_neg = true;
            }
        } else if (dig == 'J' || dig == 'j') {
            s++;
            imag = true;
            break;
        } else {
            // unknown character
            break;
        }
    }
    if (*s != 0) {
        nlr_jump(py_obj_new_exception_2(q_SyntaxError, "invalid syntax for number", NULL, NULL));
    }
    if (exp_neg) {
        exp_val = -exp_val;
    }
    exp_val += exp_extra;
    for (; exp_val > 0; exp_val--) {
        dec_val *= 10;
    }
    for (; exp_val < 0; exp_val++) {
        dec_val *= 0.1;
    }
    if (imag) {
        return py_obj_new_complex(0, dec_val);
    } else {
        return py_obj_new_float(dec_val);
    }
#else
    nlr_jump(py_obj_new_exception_2(q_SyntaxError, "decimal numbers not supported", NULL, NULL));
#endif
}

Damien's avatar
Damien committed
1198
1199
1200
1201
1202
1203
1204
py_obj_t rt_load_const_str(qstr qstr) {
    DEBUG_OP_printf("load '%s'\n", qstr_str(qstr));
    return py_obj_new_str(qstr);
}

py_obj_t rt_load_name(qstr qstr) {
    // logic: search locals, globals, builtins
1205
    DEBUG_OP_printf("load name %s\n", qstr_str(qstr));
1206
    py_map_elem_t *elem = py_qstr_map_lookup(map_locals, qstr, false);
Damien's avatar
Damien committed
1207
    if (elem == NULL) {
1208
        elem = py_qstr_map_lookup(map_globals, qstr, false);
Damien's avatar
Damien committed
1209
        if (elem == NULL) {
1210
1211
            elem = py_qstr_map_lookup(&map_builtins, qstr, false);
            if (elem == NULL) {
1212
                nlr_jump(py_obj_new_exception_2(q_NameError, "name '%s' is not defined", qstr_str(qstr), NULL));
1213
            }
Damien's avatar
Damien committed
1214
1215
1216
1217
1218
1219
        }
    }
    return elem->value;
}

py_obj_t rt_load_global(qstr qstr) {
1220
1221
    // logic: search globals, builtins
    DEBUG_OP_printf("load global %s\n", qstr_str(qstr));
1222
    py_map_elem_t *elem = py_qstr_map_lookup(map_globals, qstr, false);
1223
1224
1225
    if (elem == NULL) {
        elem = py_qstr_map_lookup(&map_builtins, qstr, false);
        if (elem == NULL) {
1226
            nlr_jump(py_obj_new_exception_2(q_NameError, "name '%s' is not defined", qstr_str(qstr), NULL));
1227
1228
1229
        }
    }
    return elem->value;
Damien's avatar
Damien committed
1230
1231
}

1232
py_obj_t rt_load_build_class(void) {
Damien's avatar
Damien committed
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
    DEBUG_OP_printf("load_build_class\n");
    py_map_elem_t *elem = py_qstr_map_lookup(&map_builtins, q___build_class__, false);
    if (elem == NULL) {
        printf("name doesn't exist: __build_class__\n");
        assert(0);
    }
    return elem->value;
}

void rt_store_name(qstr qstr, py_obj_t obj) {
1243
    DEBUG_OP_printf("store name %s <- %p\n", qstr_str(qstr), obj);
1244
    py_qstr_map_lookup(map_locals, qstr, true)->value = obj;
1245
1246
1247
1248
}

void rt_store_global(qstr qstr, py_obj_t obj) {
    DEBUG_OP_printf("store global %s <- %p\n", qstr_str(qstr), obj);
1249
    py_qstr_map_lookup(map_globals, qstr, true)->value = obj;
Damien's avatar
Damien committed
1250
1251
1252
}

py_obj_t rt_unary_op(int op, py_obj_t arg) {
Damien's avatar
Damien committed
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
    DEBUG_OP_printf("unary %d %p\n", op, arg);
    if (IS_SMALL_INT(arg)) {
        py_small_int_t val = FROM_SMALL_INT(arg);
        switch (op) {
            case RT_UNARY_OP_NOT: if (val != 0) { return py_const_true;} else { return py_const_false; }
            case RT_UNARY_OP_POSITIVE: break;
            case RT_UNARY_OP_NEGATIVE: val = -val; break;
            case RT_UNARY_OP_INVERT: val = ~val; break;
            default: assert(0); val = 0;
        }
        if (fit_small_int(val)) {
            return TO_SMALL_INT(val);
        }
#if MICROPY_ENABLE_FLOAT
    } else if (IS_O(arg, O_FLOAT)) {
        py_float_t val = py_obj_get_float(arg);
        switch (op) {
            case RT_UNARY_OP_NOT: if (val != 0) { return py_const_true;} else { return py_const_false; }
            case RT_UNARY_OP_POSITIVE: break;
            case RT_UNARY_OP_NEGATIVE: val = -val; break;
            case RT_UNARY_OP_INVERT: nlr_jump(py_obj_new_exception_2(q_TypeError, "bad operand type for unary ~: 'float'", NULL, NULL));
            default: assert(0); val = 0;
        }
        return py_obj_new_float(val);
#endif
    }
Damien's avatar
Damien committed
1279
1280
1281
1282
    assert(0);
    return py_const_none;
}

1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
uint get_index(py_obj_base_t *base, py_obj_t index) {
    // assumes base is O_TUPLE or O_LIST
    // TODO False and True are considered 0 and 1 for indexing purposes
    int len = base->u_tuple_list.len;
    if (IS_SMALL_INT(index)) {
        int i = FROM_SMALL_INT(index);
        if (i < 0) {
            i += len;
        }
        if (i < 0 || i >= len) {
            nlr_jump(py_obj_new_exception_2(q_IndexError, "%s index out of range", py_obj_get_type_str(base), NULL));
        }
        return i;
    } else {
        nlr_jump(py_obj_new_exception_2(q_TypeError, "%s indices must be integers, not %s", py_obj_get_type_str(base), py_obj_get_type_str(index)));
    }
}

Damien's avatar
Damien committed
1301
1302
1303
py_obj_t rt_binary_op(int op, py_obj_t lhs, py_obj_t rhs) {
    DEBUG_OP_printf("binary %d %p %p\n", op, lhs, rhs);
    if (op == RT_BINARY_OP_SUBSCR) {
1304
1305
1306
1307
1308
1309
        if (IS_O(lhs, O_STR)) {
            // string access
            // XXX a hack!
            const char *str = qstr_str(((py_obj_base_t*)lhs)->u_str);
            return py_obj_new_int(str[FROM_SMALL_INT(rhs)]);
        } else if ((IS_O(lhs, O_TUPLE) || IS_O(lhs, O_LIST))) {
Damien's avatar
Damien committed
1310
            // tuple/list load
1311
1312
            uint index = get_index(lhs, rhs);
            return ((py_obj_base_t*)lhs)->u_tuple_list.items[index];
Damien's avatar
Damien committed
1313
1314
1315
1316
1317
1318
1319
1320
        } else if (IS_O(lhs, O_MAP)) {
            // map load
            py_map_elem_t *elem = py_map_lookup(lhs, rhs, false);
            if (elem == NULL) {
                nlr_jump(py_obj_new_exception_2(q_KeyError, "<value>", NULL, NULL));
            } else {
                return elem->value;
            }
Damien's avatar
Damien committed
1321
1322
1323
1324
        } else {
            assert(0);
        }
    } else if (IS_SMALL_INT(lhs) && IS_SMALL_INT(rhs)) {
1325
1326
        py_small_int_t lhs_val = FROM_SMALL_INT(lhs);
        py_small_int_t rhs_val = FROM_SMALL_INT(rhs);
Damien's avatar
Damien committed
1327
        switch (op) {
1328
            case RT_BINARY_OP_OR:
Damien's avatar
Damien committed
1329
            case RT_BINARY_OP_INPLACE_OR: lhs_val |= rhs_val; break;
1330
            case RT_BINARY_OP_XOR:
Damien's avatar
Damien committed
1331
            case RT_BINARY_OP_INPLACE_XOR: lhs_val ^= rhs_val; break;
1332
            case RT_BINARY_OP_AND:
Damien's avatar
Damien committed
1333
            case RT_BINARY_OP_INPLACE_AND: lhs_val &= rhs_val; break;
1334
            case RT_BINARY_OP_LSHIFT:
Damien's avatar
Damien committed
1335
            case RT_BINARY_OP_INPLACE_LSHIFT: lhs_val <<= rhs_val; break;
1336
            case RT_BINARY_OP_RSHIFT:
Damien's avatar
Damien committed
1337
            case RT_BINARY_OP_INPLACE_RSHIFT: lhs_val >>= rhs_val; break;
Damien's avatar
Damien committed
1338
            case RT_BINARY_OP_ADD:
Damien's avatar
Damien committed
1339
            case RT_BINARY_OP_INPLACE_ADD: lhs_val += rhs_val; break;
1340
            case RT_BINARY_OP_SUBTRACT:
Damien's avatar
Damien committed
1341
            case RT_BINARY_OP_INPLACE_SUBTRACT: lhs_val -= rhs_val; break;
1342
            case RT_BINARY_OP_MULTIPLY:
Damien's avatar
Damien committed
1343
            case RT_BINARY_OP_INPLACE_MULTIPLY: lhs_val *= rhs_val; break;
1344
            case RT_BINARY_OP_FLOOR_DIVIDE:
Damien's avatar
Damien committed
1345
            case RT_BINARY_OP_INPLACE_FLOOR_DIVIDE: lhs_val /= rhs_val; break;
1346
#if MICROPY_ENABLE_FLOAT
1347
            case RT_BINARY_OP_TRUE_DIVIDE:
Damien's avatar
Damien committed
1348
            case RT_BINARY_OP_INPLACE_TRUE_DIVIDE: return py_obj_new_float((py_float_t)lhs_val / (py_float_t)rhs_val);
Damien's avatar
Damien committed
1349
#endif
1350
1351
1352
1353
            case RT_BINARY_OP_POWER:
            case RT_BINARY_OP_INPLACE_POWER:
                // TODO
                if (rhs_val == 2) {
Damien's avatar
Damien committed
1354
                    lhs_val = lhs_val * lhs_val;
1355
1356
                    break;
                }
Damien's avatar
Damien committed
1357
            default: printf("%d\n", op); assert(0);
Damien's avatar
Damien committed
1358
        }
Damien's avatar
Damien committed
1359
1360
        if (fit_small_int(lhs_val)) {
            return TO_SMALL_INT(lhs_val);
Damien's avatar
Damien committed
1361
        }
1362
#if MICROPY_ENABLE_FLOAT
Damien's avatar
Damien committed
1363
1364
1365
1366
    } else if (IS_O(lhs, O_COMPLEX) || IS_O(rhs, O_COMPLEX)) {
        py_float_t lhs_real, lhs_imag, rhs_real, rhs_imag;
        py_obj_get_complex(lhs, &lhs_real, &lhs_imag);
        py_obj_get_complex(rhs, &rhs_real, &rhs_imag);
1367
1368
        switch (op) {
            case RT_BINARY_OP_ADD:
Damien's avatar
Damien committed
1369
1370
1371
1372
            case RT_BINARY_OP_INPLACE_ADD:
                lhs_real += rhs_real;
                lhs_imag += rhs_imag;
                break;
1373
            case RT_BINARY_OP_SUBTRACT:
Damien's avatar
Damien committed
1374
1375
1376
1377
            case RT_BINARY_OP_INPLACE_SUBTRACT:
                lhs_real -= rhs_real;
                lhs_imag -= rhs_imag;
                break;
1378
            case RT_BINARY_OP_MULTIPLY:
Damien's avatar
Damien committed
1379
1380
1381
1382
1383
1384
1385
            case RT_BINARY_OP_INPLACE_MULTIPLY:
            {
                py_float_t real = lhs_real * rhs_real - lhs_imag * rhs_imag;
                lhs_imag = lhs_real * rhs_imag + lhs_imag * rhs_real;
                lhs_real = real;
                break;
            }
1386
1387
1388
1389
            /* TODO floor(?) the value
            case RT_BINARY_OP_FLOOR_DIVIDE:
            case RT_BINARY_OP_INPLACE_FLOOR_DIVIDE: val = lhs_val / rhs_val; break;
            */
Damien's avatar
Damien committed
1390
            /* TODO
1391
1392
            case RT_BINARY_OP_TRUE_DIVIDE:
            case RT_BINARY_OP_INPLACE_TRUE_DIVIDE: val = lhs_val / rhs_val; break;
Damien's avatar
Damien committed
1393
1394
            */
            default: printf("%d\n", op); assert(0);
1395
        }
Damien's avatar
Damien committed
1396
1397
1398
1399
1400
1401