emitbc.c 22.5 KB
Newer Older
Damien's avatar
Damien committed
1
2
3
4
5
6
7
8
#include <unistd.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>

#include "misc.h"
9
#include "mpconfig.h"
Damien's avatar
Damien committed
10
11
12
13
#include "lexer.h"
#include "parse.h"
#include "compile.h"
#include "scope.h"
14
#include "runtime0.h"
Damien's avatar
Damien committed
15
#include "emit.h"
16
#include "bc0.h"
Damien's avatar
Damien committed
17

18
19
struct _emit_t {
    pass_kind_t pass;
Damien's avatar
Damien committed
20
21
22
23
24
    int stack_size;
    bool last_emit_was_return_value;

    scope_t *scope;

25
    uint max_num_labels;
Damien's avatar
Damien committed
26
27
28
29
30
31
32
33
    uint *label_offsets;

    uint code_offset;
    uint code_size;
    byte *code_base;
    byte dummy_data[8];
};

34
35
36
37
38
39
40
41
42
emit_t *emit_bc_new(uint max_num_labels) {
    emit_t *emit = m_new(emit_t, 1);
    emit->max_num_labels = max_num_labels;
    emit->label_offsets = m_new(uint, emit->max_num_labels);
    emit->code_offset = 0;
    emit->code_size = 0;
    emit->code_base = NULL;
    return emit;
}
43

44
uint emit_bc_get_code_size(emit_t* emit) {
Damien's avatar
Damien committed
45
46
47
    return emit->code_size;
}

48
void* emit_bc_get_code(emit_t* emit) {
Damien's avatar
Damien committed
49
50
51
52
    return emit->code_base;
}

// all functions must go through this one to emit bytes
53
static byte* emit_get_cur_to_write_bytes(emit_t* emit, int num_bytes_to_write) {
Damien's avatar
Damien committed
54
55
56
57
58
59
60
61
62
63
64
65
    //printf("emit %d\n", num_bytes_to_write);
    if (emit->pass < PASS_3) {
        emit->code_offset += num_bytes_to_write;
        return emit->dummy_data;
    } else {
        assert(emit->code_offset + num_bytes_to_write <= emit->code_size);
        byte *c = emit->code_base + emit->code_offset;
        emit->code_offset += num_bytes_to_write;
        return c;
    }
}

66
static void emit_write_byte_1(emit_t* emit, byte b1) {
Damien's avatar
Damien committed
67
68
69
70
    byte* c = emit_get_cur_to_write_bytes(emit, 1);
    c[0] = b1;
}

71
static void emit_write_byte_1_byte(emit_t* emit, byte b1, uint b2) {
Damien's avatar
Damien committed
72
73
74
75
76
77
    assert((b2 & (~0xff)) == 0);
    byte* c = emit_get_cur_to_write_bytes(emit, 2);
    c[0] = b1;
    c[1] = b2;
}

Damien's avatar
Damien committed
78
// integers (for small ints) are stored as 24 bits, in excess
79
static void emit_write_byte_1_int(emit_t* emit, byte b1, int num) {
Damien's avatar
Damien committed
80
81
    num += 0x800000;
    assert(0 <= num && num <= 0xffffff);
82
    byte* c = emit_get_cur_to_write_bytes(emit, 4);
Damien's avatar
Damien committed
83
84
85
    c[0] = b1;
    c[1] = num;
    c[2] = num >> 8;
86
    c[3] = num >> 16;
Damien's avatar
Damien committed
87
88
}

89
static void emit_write_byte_1_uint(emit_t* emit, byte b1, uint num) {
Damien's avatar
Damien committed
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
    if (num <= 127) { // fits in 0x7f
        // fit argument in single byte
        byte* c = emit_get_cur_to_write_bytes(emit, 2);
        c[0] = b1;
        c[1] = num;
    } else if (num <= 16383) { // fits in 0x3fff
        // fit argument in two bytes
        byte* c = emit_get_cur_to_write_bytes(emit, 3);
        c[0] = b1;
        c[1] = (num >> 8) | 0x80;
        c[2] = num;
    } else {
        // larger numbers not implemented/supported
        assert(0);
    }
}

107
static void emit_write_byte_1_qstr(emit_t* emit, byte b1, qstr qstr) {
Damien's avatar
Damien committed
108
109
110
    emit_write_byte_1_uint(emit, b1, qstr);
}

Damien's avatar
Damien committed
111
112
// unsigned labels are relative to ip following this instruction, stored as 16 bits
static void emit_write_byte_1_unsigned_label(emit_t* emit, byte b1, int label) {
Damien's avatar
Damien committed
113
114
115
116
    uint code_offset;
    if (emit->pass < PASS_3) {
        code_offset = 0;
    } else {
Damien's avatar
Damien committed
117
        code_offset = emit->label_offsets[label] - emit->code_offset - 3;
Damien's avatar
Damien committed
118
    }
Damien's avatar
Damien committed
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
    byte* c = emit_get_cur_to_write_bytes(emit, 3);
    c[0] = b1;
    c[1] = code_offset;
    c[2] = code_offset >> 8;
}

// signed labels are relative to ip following this instruction, stored as 16 bits, in excess
static void emit_write_byte_1_signed_label(emit_t* emit, byte b1, int label) {
    int code_offset;
    if (emit->pass < PASS_3) {
        code_offset = 0;
    } else {
        code_offset = emit->label_offsets[label] - emit->code_offset - 3 + 0x8000;
    }
    byte* c = emit_get_cur_to_write_bytes(emit, 3);
    c[0] = b1;
    c[1] = code_offset;
    c[2] = code_offset >> 8;
Damien's avatar
Damien committed
137
138
}

Damien George's avatar
Damien George committed
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
static void emit_bc_set_native_types(emit_t *emit, bool do_native_types) {
}

static void emit_bc_start_pass(emit_t *emit, pass_kind_t pass, scope_t *scope) {
    emit->pass = pass;
    emit->stack_size = 0;
    emit->last_emit_was_return_value = false;
    emit->scope = scope;
    if (pass == PASS_2) {
        memset(emit->label_offsets, -1, emit->max_num_labels * sizeof(uint));
    }
    emit->code_offset = 0;

    // prelude for initialising closed over variables
    int num_cell = 0;
    for (int i = 0; i < scope->id_info_len; i++) {
        id_info_t *id = &scope->id_info[i];
        if (id->kind == ID_INFO_KIND_CELL) {
            num_cell += 1;
        }
    }
    assert(num_cell <= 255);
    emit_write_byte_1(emit, num_cell); // write number of locals that are cells
    for (int i = 0; i < scope->id_info_len; i++) {
        id_info_t *id = &scope->id_info[i];
        if (id->kind == ID_INFO_KIND_CELL) {
            emit_write_byte_1(emit, id->local_num); // write the local which should be converted to a cell
        }
    }
}

static void emit_bc_end_pass(emit_t *emit) {
    // check stack is back to zero size
    if (emit->stack_size != 0) {
        printf("ERROR: stack size not back to zero; got %d\n", emit->stack_size);
    }

    if (emit->pass == PASS_2) {
        // calculate size of code in bytes
        emit->code_size = emit->code_offset;
        emit->code_base = m_new(byte, emit->code_size);

    } else if (emit->pass == PASS_3) {
        rt_assign_byte_code(emit->scope->unique_code_id, emit->code_base, emit->code_size, emit->scope->num_params, emit->scope->num_locals, emit->scope->stack_size, (emit->scope->flags & SCOPE_FLAG_GENERATOR) != 0);
    }
}

186
bool emit_bc_last_emit_was_return_value(emit_t *emit) {
Damien's avatar
Damien committed
187
188
189
    return emit->last_emit_was_return_value;
}

190
int emit_bc_get_stack_size(emit_t *emit) {
Damien's avatar
Damien committed
191
192
193
    return emit->stack_size;
}

194
static void emit_bc_set_stack_size(emit_t *emit, int size) {
195
    emit->stack_size = size;
Damien's avatar
Damien committed
196
197
}

198
199
200
201
202
203
204
205
206
207
208
209
static void emit_bc_load_id(emit_t *emit, qstr qstr) {
    emit_common_load_id(emit, &emit_bc_method_table, emit->scope, qstr);
}

static void emit_bc_store_id(emit_t *emit, qstr qstr) {
    emit_common_store_id(emit, &emit_bc_method_table, emit->scope, qstr);
}

static void emit_bc_delete_id(emit_t *emit, qstr qstr) {
    emit_common_delete_id(emit, &emit_bc_method_table, emit->scope, qstr);
}

210
static void emit_pre(emit_t *emit, int stack_size_delta) {
211
212
213
    emit->stack_size += stack_size_delta;
    if (emit->stack_size > emit->scope->stack_size) {
        emit->scope->stack_size = emit->stack_size;
Damien's avatar
Damien committed
214
215
216
217
    }
    emit->last_emit_was_return_value = false;
}

218
static void emit_bc_label_assign(emit_t *emit, int l) {
Damien's avatar
Damien committed
219
    emit_pre(emit, 0);
220
221
222
223
224
225
226
    assert(l < emit->max_num_labels);
    if (emit->pass == PASS_2) {
        // assign label offset
        assert(emit->label_offsets[l] == -1);
        emit->label_offsets[l] = emit->code_offset;
    } else if (emit->pass == PASS_3) {
        // ensure label offset has not changed from PASS_2 to PASS_3
227
        //printf("l%d: (at %d vs %d)\n", l, emit->code_offset, emit->label_offsets[l]);
228
        assert(emit->label_offsets[l] == emit->code_offset);
Damien's avatar
Damien committed
229
230
231
    }
}

232
static void emit_bc_import_name(emit_t *emit, qstr qstr) {
Damien's avatar
Damien committed
233
    emit_pre(emit, -1);
234
    emit_write_byte_1_qstr(emit, MP_BC_IMPORT_NAME, qstr);
Damien's avatar
Damien committed
235
236
}

237
static void emit_bc_import_from(emit_t *emit, qstr qstr) {
Damien's avatar
Damien committed
238
    emit_pre(emit, 1);
239
    emit_write_byte_1_qstr(emit, MP_BC_IMPORT_FROM, qstr);
Damien's avatar
Damien committed
240
241
}

242
static void emit_bc_import_star(emit_t *emit) {
Damien's avatar
Damien committed
243
    emit_pre(emit, -1);
244
    emit_write_byte_1(emit, MP_BC_IMPORT_STAR);
Damien's avatar
Damien committed
245
246
}

247
static void emit_bc_load_const_tok(emit_t *emit, mp_token_kind_t tok) {
Damien's avatar
Damien committed
248
249
    emit_pre(emit, 1);
    switch (tok) {
250
251
252
        case MP_TOKEN_KW_FALSE: emit_write_byte_1(emit, MP_BC_LOAD_CONST_FALSE); break;
        case MP_TOKEN_KW_NONE: emit_write_byte_1(emit, MP_BC_LOAD_CONST_NONE); break;
        case MP_TOKEN_KW_TRUE: emit_write_byte_1(emit, MP_BC_LOAD_CONST_TRUE); break;
Damien's avatar
Damien committed
253
254
255
256
        default: assert(0);
    }
}

257
static void emit_bc_load_const_small_int(emit_t *emit, int arg) {
Damien's avatar
Damien committed
258
    emit_pre(emit, 1);
259
    emit_write_byte_1_int(emit, MP_BC_LOAD_CONST_SMALL_INT, arg);
Damien's avatar
Damien committed
260
261
}

262
static void emit_bc_load_const_int(emit_t *emit, qstr qstr) {
Damien's avatar
Damien committed
263
    emit_pre(emit, 1);
264
    emit_write_byte_1_qstr(emit, MP_BC_LOAD_CONST_INT, qstr);
Damien's avatar
Damien committed
265
266
}

267
static void emit_bc_load_const_dec(emit_t *emit, qstr qstr) {
Damien's avatar
Damien committed
268
    emit_pre(emit, 1);
269
    emit_write_byte_1_qstr(emit, MP_BC_LOAD_CONST_DEC, qstr);
Damien's avatar
Damien committed
270
271
}

272
static void emit_bc_load_const_id(emit_t *emit, qstr qstr) {
Damien's avatar
Damien committed
273
    emit_pre(emit, 1);
274
    emit_write_byte_1_qstr(emit, MP_BC_LOAD_CONST_ID, qstr);
Damien's avatar
Damien committed
275
276
}

277
static void emit_bc_load_const_str(emit_t *emit, qstr qstr, bool bytes) {
Damien's avatar
Damien committed
278
279
    emit_pre(emit, 1);
    if (bytes) {
280
        emit_write_byte_1_qstr(emit, MP_BC_LOAD_CONST_BYTES, qstr);
Damien's avatar
Damien committed
281
    } else {
282
        emit_write_byte_1_qstr(emit, MP_BC_LOAD_CONST_STRING, qstr);
Damien's avatar
Damien committed
283
284
285
    }
}

286
static void emit_bc_load_const_verbatim_str(emit_t *emit, const char *str) {
287
    // not needed/supported for BC
Damien's avatar
Damien committed
288
289
290
    assert(0);
}

291
static void emit_bc_load_fast(emit_t *emit, qstr qstr, int local_num) {
Damien's avatar
Damien committed
292
293
294
    assert(local_num >= 0);
    emit_pre(emit, 1);
    switch (local_num) {
295
296
297
298
        case 0: emit_write_byte_1(emit, MP_BC_LOAD_FAST_0); break;
        case 1: emit_write_byte_1(emit, MP_BC_LOAD_FAST_1); break;
        case 2: emit_write_byte_1(emit, MP_BC_LOAD_FAST_2); break;
        default: emit_write_byte_1_uint(emit, MP_BC_LOAD_FAST_N, local_num); break;
Damien's avatar
Damien committed
299
300
301
    }
}

Damien's avatar
Damien committed
302
static void emit_bc_load_deref(emit_t *emit, qstr qstr, int local_num) {
Damien's avatar
Damien committed
303
    emit_pre(emit, 1);
304
    emit_write_byte_1_uint(emit, MP_BC_LOAD_DEREF, local_num);
Damien's avatar
Damien committed
305
306
}

Damien's avatar
Damien committed
307
static void emit_bc_load_closure(emit_t *emit, qstr qstr, int local_num) {
Damien George's avatar
Damien George committed
308
309
    // not needed/supported for BC
    assert(0);
Damien's avatar
Damien committed
310
311
}

Damien's avatar
Damien committed
312
static void emit_bc_load_name(emit_t *emit, qstr qstr) {
Damien's avatar
Damien committed
313
    emit_pre(emit, 1);
314
    emit_write_byte_1_qstr(emit, MP_BC_LOAD_NAME, qstr);
Damien's avatar
Damien committed
315
316
}

Damien's avatar
Damien committed
317
static void emit_bc_load_global(emit_t *emit, qstr qstr) {
Damien's avatar
Damien committed
318
    emit_pre(emit, 1);
319
    emit_write_byte_1_qstr(emit, MP_BC_LOAD_GLOBAL, qstr);
Damien's avatar
Damien committed
320
321
}

322
static void emit_bc_load_attr(emit_t *emit, qstr qstr) {
Damien's avatar
Damien committed
323
    emit_pre(emit, 0);
324
    emit_write_byte_1_qstr(emit, MP_BC_LOAD_ATTR, qstr);
Damien's avatar
Damien committed
325
326
}

327
static void emit_bc_load_method(emit_t *emit, qstr qstr) {
Damien's avatar
Damien committed
328
    emit_pre(emit, 0);
329
    emit_write_byte_1_qstr(emit, MP_BC_LOAD_METHOD, qstr);
Damien's avatar
Damien committed
330
331
}

332
static void emit_bc_load_build_class(emit_t *emit) {
Damien's avatar
Damien committed
333
    emit_pre(emit, 1);
334
    emit_write_byte_1(emit, MP_BC_LOAD_BUILD_CLASS);
Damien's avatar
Damien committed
335
336
}

337
static void emit_bc_store_fast(emit_t *emit, qstr qstr, int local_num) {
Damien's avatar
Damien committed
338
339
340
    assert(local_num >= 0);
    emit_pre(emit, -1);
    switch (local_num) {
341
342
343
344
        case 0: emit_write_byte_1(emit, MP_BC_STORE_FAST_0); break;
        case 1: emit_write_byte_1(emit, MP_BC_STORE_FAST_1); break;
        case 2: emit_write_byte_1(emit, MP_BC_STORE_FAST_2); break;
        default: emit_write_byte_1_uint(emit, MP_BC_STORE_FAST_N, local_num); break;
Damien's avatar
Damien committed
345
346
347
    }
}

Damien's avatar
Damien committed
348
349
static void emit_bc_store_deref(emit_t *emit, qstr qstr, int local_num) {
    emit_pre(emit, -1);
350
    emit_write_byte_1_uint(emit, MP_BC_STORE_DEREF, local_num);
Damien's avatar
Damien committed
351
352
}

353
static void emit_bc_store_name(emit_t *emit, qstr qstr) {
Damien's avatar
Damien committed
354
    emit_pre(emit, -1);
355
    emit_write_byte_1_qstr(emit, MP_BC_STORE_NAME, qstr);
Damien's avatar
Damien committed
356
357
}

358
static void emit_bc_store_global(emit_t *emit, qstr qstr) {
Damien's avatar
Damien committed
359
    emit_pre(emit, -1);
360
    emit_write_byte_1_qstr(emit, MP_BC_STORE_GLOBAL, qstr);
Damien's avatar
Damien committed
361
362
}

363
static void emit_bc_store_attr(emit_t *emit, qstr qstr) {
Damien's avatar
Damien committed
364
    emit_pre(emit, -2);
365
    emit_write_byte_1_qstr(emit, MP_BC_STORE_ATTR, qstr);
Damien's avatar
Damien committed
366
367
}

368
static void emit_bc_store_subscr(emit_t *emit) {
Damien's avatar
Damien committed
369
    emit_pre(emit, -3);
370
    emit_write_byte_1(emit, MP_BC_STORE_SUBSCR);
Damien's avatar
Damien committed
371
372
}

373
static void emit_bc_store_locals(emit_t *emit) {
374
    // not needed
375
    emit_pre(emit, -1);
376
    emit_write_byte_1(emit, MP_BC_POP_TOP);
377
378
}

379
static void emit_bc_delete_fast(emit_t *emit, qstr qstr, int local_num) {
Damien's avatar
Damien committed
380
381
    assert(local_num >= 0);
    emit_pre(emit, 0);
382
    emit_write_byte_1_uint(emit, MP_BC_DELETE_FAST_N, local_num);
Damien's avatar
Damien committed
383
384
}

Damien's avatar
Damien committed
385
386
static void emit_bc_delete_deref(emit_t *emit, qstr qstr, int local_num) {
    emit_pre(emit, 0);
387
    emit_write_byte_1_qstr(emit, MP_BC_DELETE_DEREF, local_num);
Damien's avatar
Damien committed
388
389
}

390
static void emit_bc_delete_name(emit_t *emit, qstr qstr) {
Damien's avatar
Damien committed
391
    emit_pre(emit, 0);
392
    emit_write_byte_1_qstr(emit, MP_BC_DELETE_NAME, qstr);
Damien's avatar
Damien committed
393
394
}

395
static void emit_bc_delete_global(emit_t *emit, qstr qstr) {
Damien's avatar
Damien committed
396
    emit_pre(emit, 0);
397
    emit_write_byte_1_qstr(emit, MP_BC_DELETE_GLOBAL, qstr);
Damien's avatar
Damien committed
398
399
}

400
static void emit_bc_delete_attr(emit_t *emit, qstr qstr) {
Damien's avatar
Damien committed
401
    emit_pre(emit, -1);
402
    emit_write_byte_1_qstr(emit, MP_BC_DELETE_ATTR, qstr);
Damien's avatar
Damien committed
403
404
}

405
static void emit_bc_delete_subscr(emit_t *emit) {
Damien's avatar
Damien committed
406
    emit_pre(emit, -2);
407
    emit_write_byte_1(emit, MP_BC_DELETE_SUBSCR);
Damien's avatar
Damien committed
408
409
}

410
static void emit_bc_dup_top(emit_t *emit) {
Damien's avatar
Damien committed
411
    emit_pre(emit, 1);
412
    emit_write_byte_1(emit, MP_BC_DUP_TOP);
Damien's avatar
Damien committed
413
414
}

415
static void emit_bc_dup_top_two(emit_t *emit) {
Damien's avatar
Damien committed
416
    emit_pre(emit, 2);
417
    emit_write_byte_1(emit, MP_BC_DUP_TOP_TWO);
Damien's avatar
Damien committed
418
419
}

420
static void emit_bc_pop_top(emit_t *emit) {
Damien's avatar
Damien committed
421
    emit_pre(emit, -1);
422
    emit_write_byte_1(emit, MP_BC_POP_TOP);
Damien's avatar
Damien committed
423
424
}

425
static void emit_bc_rot_two(emit_t *emit) {
Damien's avatar
Damien committed
426
    emit_pre(emit, 0);
427
    emit_write_byte_1(emit, MP_BC_ROT_TWO);
Damien's avatar
Damien committed
428
429
}

430
static void emit_bc_rot_three(emit_t *emit) {
Damien's avatar
Damien committed
431
    emit_pre(emit, 0);
432
    emit_write_byte_1(emit, MP_BC_ROT_THREE);
Damien's avatar
Damien committed
433
434
}

435
static void emit_bc_jump(emit_t *emit, int label) {
Damien's avatar
Damien committed
436
    emit_pre(emit, 0);
437
    emit_write_byte_1_signed_label(emit, MP_BC_JUMP, label);
Damien's avatar
Damien committed
438
439
}

440
static void emit_bc_pop_jump_if_true(emit_t *emit, int label) {
Damien's avatar
Damien committed
441
    emit_pre(emit, -1);
442
    emit_write_byte_1_signed_label(emit, MP_BC_POP_JUMP_IF_TRUE, label);
Damien's avatar
Damien committed
443
444
}

445
static void emit_bc_pop_jump_if_false(emit_t *emit, int label) {
Damien's avatar
Damien committed
446
    emit_pre(emit, -1);
447
    emit_write_byte_1_signed_label(emit, MP_BC_POP_JUMP_IF_FALSE, label);
Damien's avatar
Damien committed
448
449
}

450
static void emit_bc_jump_if_true_or_pop(emit_t *emit, int label) {
Damien's avatar
Damien committed
451
    emit_pre(emit, -1);
452
    emit_write_byte_1_signed_label(emit, MP_BC_JUMP_IF_TRUE_OR_POP, label);
Damien's avatar
Damien committed
453
454
}

455
static void emit_bc_jump_if_false_or_pop(emit_t *emit, int label) {
Damien's avatar
Damien committed
456
    emit_pre(emit, -1);
457
    emit_write_byte_1_signed_label(emit, MP_BC_JUMP_IF_FALSE_OR_POP, label);
Damien's avatar
Damien committed
458
459
}

460
static void emit_bc_setup_loop(emit_t *emit, int label) {
Damien's avatar
Damien committed
461
    emit_pre(emit, 0);
462
    emit_write_byte_1_unsigned_label(emit, MP_BC_SETUP_LOOP, label);
Damien's avatar
Damien committed
463
464
}

465
static void emit_bc_break_loop(emit_t *emit, int label) {
Damien's avatar
Damien committed
466
    emit_pre(emit, 0);
467
    emit_write_byte_1_unsigned_label(emit, MP_BC_BREAK_LOOP, label);
Damien's avatar
Damien committed
468
469
}

470
static void emit_bc_continue_loop(emit_t *emit, int label) {
Damien's avatar
Damien committed
471
    emit_pre(emit, 0);
472
    emit_write_byte_1_unsigned_label(emit, MP_BC_CONTINUE_LOOP, label);
Damien's avatar
Damien committed
473
474
}

475
static void emit_bc_setup_with(emit_t *emit, int label) {
Damien's avatar
Damien committed
476
    emit_pre(emit, 7);
477
    emit_write_byte_1_unsigned_label(emit, MP_BC_SETUP_WITH, label);
Damien's avatar
Damien committed
478
479
}

480
static void emit_bc_with_cleanup(emit_t *emit) {
Damien's avatar
Damien committed
481
    emit_pre(emit, -7);
482
    emit_write_byte_1(emit, MP_BC_WITH_CLEANUP);
Damien's avatar
Damien committed
483
484
}

485
static void emit_bc_setup_except(emit_t *emit, int label) {
Damien's avatar
Damien committed
486
    emit_pre(emit, 6);
487
    emit_write_byte_1_unsigned_label(emit, MP_BC_SETUP_EXCEPT, label);
Damien's avatar
Damien committed
488
489
}

490
static void emit_bc_setup_finally(emit_t *emit, int label) {
Damien's avatar
Damien committed
491
    emit_pre(emit, 6);
492
    emit_write_byte_1_unsigned_label(emit, MP_BC_SETUP_FINALLY, label);
Damien's avatar
Damien committed
493
494
}

495
static void emit_bc_end_finally(emit_t *emit) {
Damien's avatar
Damien committed
496
    emit_pre(emit, -1);
497
    emit_write_byte_1(emit, MP_BC_END_FINALLY);
Damien's avatar
Damien committed
498
499
}

500
static void emit_bc_get_iter(emit_t *emit) {
Damien's avatar
Damien committed
501
    emit_pre(emit, 0);
502
    emit_write_byte_1(emit, MP_BC_GET_ITER);
Damien's avatar
Damien committed
503
504
}

505
static void emit_bc_for_iter(emit_t *emit, int label) {
Damien's avatar
Damien committed
506
    emit_pre(emit, 1);
507
    emit_write_byte_1_unsigned_label(emit, MP_BC_FOR_ITER, label);
Damien's avatar
Damien committed
508
509
}

510
static void emit_bc_for_iter_end(emit_t *emit) {
Damien's avatar
Damien committed
511
512
513
    emit_pre(emit, -1);
}

514
static void emit_bc_pop_block(emit_t *emit) {
Damien's avatar
Damien committed
515
    emit_pre(emit, 0);
516
    emit_write_byte_1(emit, MP_BC_POP_BLOCK);
Damien's avatar
Damien committed
517
518
}

519
static void emit_bc_pop_except(emit_t *emit) {
Damien's avatar
Damien committed
520
    emit_pre(emit, 0);
521
    emit_write_byte_1(emit, MP_BC_POP_EXCEPT);
Damien's avatar
Damien committed
522
523
}

524
static void emit_bc_unary_op(emit_t *emit, rt_unary_op_t op) {
Damien's avatar
Damien committed
525
    emit_pre(emit, 0);
526
    emit_write_byte_1_byte(emit, MP_BC_UNARY_OP, op);
Damien's avatar
Damien committed
527
528
}

529
static void emit_bc_binary_op(emit_t *emit, rt_binary_op_t op) {
Damien's avatar
Damien committed
530
    emit_pre(emit, -1);
531
    emit_write_byte_1_byte(emit, MP_BC_BINARY_OP, op);
Damien's avatar
Damien committed
532
533
}

534
static void emit_bc_compare_op(emit_t *emit, rt_compare_op_t op) {
Damien's avatar
Damien committed
535
    emit_pre(emit, -1);
536
    emit_write_byte_1_byte(emit, MP_BC_COMPARE_OP, op);
Damien's avatar
Damien committed
537
538
}

539
static void emit_bc_build_tuple(emit_t *emit, int n_args) {
Damien's avatar
Damien committed
540
541
    assert(n_args >= 0);
    emit_pre(emit, 1 - n_args);
542
    emit_write_byte_1_uint(emit, MP_BC_BUILD_TUPLE, n_args);
Damien's avatar
Damien committed
543
544
}

545
static void emit_bc_build_list(emit_t *emit, int n_args) {
Damien's avatar
Damien committed
546
547
    assert(n_args >= 0);
    emit_pre(emit, 1 - n_args);
548
    emit_write_byte_1_uint(emit, MP_BC_BUILD_LIST, n_args);
Damien's avatar
Damien committed
549
550
}

551
static void emit_bc_list_append(emit_t *emit, int list_stack_index) {
Damien's avatar
Damien committed
552
553
    assert(list_stack_index >= 0);
    emit_pre(emit, -1);
554
    emit_write_byte_1_uint(emit, MP_BC_LIST_APPEND, list_stack_index);
Damien's avatar
Damien committed
555
556
}

557
static void emit_bc_build_map(emit_t *emit, int n_args) {
Damien's avatar
Damien committed
558
559
    assert(n_args >= 0);
    emit_pre(emit, 1);
560
    emit_write_byte_1_uint(emit, MP_BC_BUILD_MAP, n_args);
Damien's avatar
Damien committed
561
562
}

563
static void emit_bc_store_map(emit_t *emit) {
Damien's avatar
Damien committed
564
    emit_pre(emit, -2);
565
    emit_write_byte_1(emit, MP_BC_STORE_MAP);
Damien's avatar
Damien committed
566
567
}

568
static void emit_bc_map_add(emit_t *emit, int map_stack_index) {
Damien's avatar
Damien committed
569
570
    assert(map_stack_index >= 0);
    emit_pre(emit, -2);
571
    emit_write_byte_1_uint(emit, MP_BC_MAP_ADD, map_stack_index);
Damien's avatar
Damien committed
572
573
}

574
static void emit_bc_build_set(emit_t *emit, int n_args) {
Damien's avatar
Damien committed
575
576
    assert(n_args >= 0);
    emit_pre(emit, 1 - n_args);
577
    emit_write_byte_1_uint(emit, MP_BC_BUILD_SET, n_args);
Damien's avatar
Damien committed
578
579
}

580
static void emit_bc_set_add(emit_t *emit, int set_stack_index) {
Damien's avatar
Damien committed
581
582
    assert(set_stack_index >= 0);
    emit_pre(emit, -1);
583
    emit_write_byte_1_uint(emit, MP_BC_SET_ADD, set_stack_index);
Damien's avatar
Damien committed
584
585
}

586
static void emit_bc_build_slice(emit_t *emit, int n_args) {
Damien's avatar
Damien committed
587
588
    assert(n_args >= 0);
    emit_pre(emit, 1 - n_args);
589
    emit_write_byte_1_uint(emit, MP_BC_BUILD_SLICE, n_args);
Damien's avatar
Damien committed
590
591
}

592
static void emit_bc_unpack_sequence(emit_t *emit, int n_args) {
Damien's avatar
Damien committed
593
594
    assert(n_args >= 0);
    emit_pre(emit, -1 + n_args);
595
    emit_write_byte_1_uint(emit, MP_BC_UNPACK_SEQUENCE, n_args);
Damien's avatar
Damien committed
596
597
}

598
static void emit_bc_unpack_ex(emit_t *emit, int n_left, int n_right) {
Damien's avatar
Damien committed
599
600
    assert(n_left >=0 && n_right >= 0);
    emit_pre(emit, -1 + n_left + n_right + 1);
601
    emit_write_byte_1_uint(emit, MP_BC_UNPACK_EX, n_left | (n_right << 8));
Damien's avatar
Damien committed
602
603
}

604
static void emit_bc_make_function(emit_t *emit, scope_t *scope, int n_dict_params, int n_default_params) {
Damien's avatar
Damien committed
605
606
    assert(n_default_params == 0 && n_dict_params == 0);
    emit_pre(emit, 1);
607
    emit_write_byte_1_uint(emit, MP_BC_MAKE_FUNCTION, scope->unique_code_id);
Damien's avatar
Damien committed
608
609
}

610
static void emit_bc_make_closure(emit_t *emit, scope_t *scope, int n_dict_params, int n_default_params) {
Damien's avatar
Damien committed
611
612
    assert(n_default_params == 0 && n_dict_params == 0);
    emit_pre(emit, 0);
613
    emit_write_byte_1_uint(emit, MP_BC_MAKE_CLOSURE, scope->unique_code_id);
Damien's avatar
Damien committed
614
615
}

616
static void emit_bc_call_function(emit_t *emit, int n_positional, int n_keyword, bool have_star_arg, bool have_dbl_star_arg) {
Damien's avatar
Damien committed
617
618
619
620
621
622
623
624
625
626
627
    int s = 0;
    if (have_star_arg) {
        s += 1;
    }
    if (have_dbl_star_arg) {
        s += 1;
    }
    emit_pre(emit, -n_positional - 2 * n_keyword - s);
    int op;
    if (have_star_arg) {
        if (have_dbl_star_arg) {
628
            op = MP_BC_CALL_FUNCTION_VAR_KW;
Damien's avatar
Damien committed
629
        } else {
630
            op = MP_BC_CALL_FUNCTION_VAR;
Damien's avatar
Damien committed
631
632
633
        }
    } else {
        if (have_dbl_star_arg) {
634
            op = MP_BC_CALL_FUNCTION_KW;
Damien's avatar
Damien committed
635
        } else {
636
            op = MP_BC_CALL_FUNCTION;
Damien's avatar
Damien committed
637
638
639
640
641
        }
    }
    emit_write_byte_1_uint(emit, op, (n_keyword << 8) | n_positional); // TODO make it 2 separate uints
}

642
static void emit_bc_call_method(emit_t *emit, int n_positional, int n_keyword, bool have_star_arg, bool have_dbl_star_arg) {
Damien's avatar
Damien committed
643
644
645
646
647
648
649
650
651
652
653
    int s = 0;
    if (have_star_arg) {
        s += 1;
    }
    if (have_dbl_star_arg) {
        s += 1;
    }
    emit_pre(emit, -n_positional - 2 * n_keyword - s);
    int op;
    if (have_star_arg) {
        if (have_dbl_star_arg) {
654
            op = MP_BC_CALL_METHOD_VAR_KW;
Damien's avatar
Damien committed
655
        } else {
656
            op = MP_BC_CALL_METHOD_VAR;
Damien's avatar
Damien committed
657
658
659
        }
    } else {
        if (have_dbl_star_arg) {
660
            op = MP_BC_CALL_METHOD_KW;
Damien's avatar
Damien committed
661
        } else {
662
            op = MP_BC_CALL_METHOD;
Damien's avatar
Damien committed
663
664
665
666
667
        }
    }
    emit_write_byte_1_uint(emit, op, (n_keyword << 8) | n_positional); // TODO make it 2 separate uints
}

668
static void emit_bc_return_value(emit_t *emit) {
Damien's avatar
Damien committed
669
670
    emit_pre(emit, -1);
    emit->last_emit_was_return_value = true;
671
    emit_write_byte_1(emit, MP_BC_RETURN_VALUE);
Damien's avatar
Damien committed
672
673
}

674
static void emit_bc_raise_varargs(emit_t *emit, int n_args) {
Damien's avatar
Damien committed
675
676
    assert(n_args >= 0);
    emit_pre(emit, -n_args);
677
    emit_write_byte_1_uint(emit, MP_BC_RAISE_VARARGS, n_args);
Damien's avatar
Damien committed
678
679
}

680
static void emit_bc_yield_value(emit_t *emit) {
Damien's avatar
Damien committed
681
682
683
684
    emit_pre(emit, 0);
    if (emit->pass == PASS_2) {
        emit->scope->flags |= SCOPE_FLAG_GENERATOR;
    }
685
    emit_write_byte_1(emit, MP_BC_YIELD_VALUE);
Damien's avatar
Damien committed
686
687
}

688
static void emit_bc_yield_from(emit_t *emit) {
Damien's avatar
Damien committed
689
690
691
692
    emit_pre(emit, -1);
    if (emit->pass == PASS_2) {
        emit->scope->flags |= SCOPE_FLAG_GENERATOR;
    }
693
    emit_write_byte_1(emit, MP_BC_YIELD_FROM);
Damien's avatar
Damien committed
694
695
}

696
const emit_method_table_t emit_bc_method_table = {
697
698
699
700
701
702
703
    emit_bc_set_native_types,
    emit_bc_start_pass,
    emit_bc_end_pass,
    emit_bc_last_emit_was_return_value,
    emit_bc_get_stack_size,
    emit_bc_set_stack_size,

704
705
706
707
    emit_bc_load_id,
    emit_bc_store_id,
    emit_bc_delete_id,

708
709
710
711
712
713
714
715
716
717
718
719
720
721
    emit_bc_label_assign,
    emit_bc_import_name,
    emit_bc_import_from,
    emit_bc_import_star,
    emit_bc_load_const_tok,
    emit_bc_load_const_small_int,
    emit_bc_load_const_int,
    emit_bc_load_const_dec,
    emit_bc_load_const_id,
    emit_bc_load_const_str,
    emit_bc_load_const_verbatim_str,
    emit_bc_load_fast,
    emit_bc_load_deref,
    emit_bc_load_closure,
Damien's avatar
Damien committed
722
723
    emit_bc_load_name,
    emit_bc_load_global,
724
725
726
727
    emit_bc_load_attr,
    emit_bc_load_method,
    emit_bc_load_build_class,
    emit_bc_store_fast,
Damien's avatar
Damien committed
728
    emit_bc_store_deref,
729
730
731
732
    emit_bc_store_name,
    emit_bc_store_global,
    emit_bc_store_attr,
    emit_bc_store_subscr,
733
    emit_bc_store_locals,
734
    emit_bc_delete_fast,
Damien's avatar
Damien committed
735
    emit_bc_delete_deref,
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
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
    emit_bc_delete_name,
    emit_bc_delete_global,
    emit_bc_delete_attr,
    emit_bc_delete_subscr,
    emit_bc_dup_top,
    emit_bc_dup_top_two,
    emit_bc_pop_top,
    emit_bc_rot_two,
    emit_bc_rot_three,
    emit_bc_jump,
    emit_bc_pop_jump_if_true,
    emit_bc_pop_jump_if_false,
    emit_bc_jump_if_true_or_pop,
    emit_bc_jump_if_false_or_pop,
    emit_bc_setup_loop,
    emit_bc_break_loop,
    emit_bc_continue_loop,
    emit_bc_setup_with,
    emit_bc_with_cleanup,
    emit_bc_setup_except,
    emit_bc_setup_finally,
    emit_bc_end_finally,
    emit_bc_get_iter,
    emit_bc_for_iter,
    emit_bc_for_iter_end,
    emit_bc_pop_block,
    emit_bc_pop_except,
    emit_bc_unary_op,
    emit_bc_binary_op,
    emit_bc_compare_op,
    emit_bc_build_tuple,
    emit_bc_build_list,
    emit_bc_list_append,
    emit_bc_build_map,
    emit_bc_store_map,
    emit_bc_map_add,
    emit_bc_build_set,
    emit_bc_set_add,
    emit_bc_build_slice,
    emit_bc_unpack_sequence,
    emit_bc_unpack_ex,
    emit_bc_make_function,
    emit_bc_make_closure,
    emit_bc_call_function,
    emit_bc_call_method,
    emit_bc_return_value,
    emit_bc_raise_varargs,
    emit_bc_yield_value,
    emit_bc_yield_from,
};