forked from JuliaLang/julia
-
Notifications
You must be signed in to change notification settings - Fork 0
/
toplevel.c
869 lines (795 loc) · 29.1 KB
/
toplevel.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
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
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
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
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
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
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
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
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
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
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
// This file is a part of Julia. License is MIT: https://julialang.org/license
/*
evaluating top-level expressions, loading source files
*/
#include "platform.h"
#include <stdlib.h>
#include <string.h>
#include <setjmp.h>
#include <assert.h>
#include <sys/types.h>
#include <errno.h>
#if defined(_OS_WINDOWS_)
#include <malloc.h>
#else
#include <unistd.h>
#endif
#include "julia.h"
#include "julia_internal.h"
#include "uv.h"
#ifdef __cplusplus
extern "C" {
#endif
// current line number in a file
DLLEXPORT int jl_lineno = 0;
// current file name
DLLEXPORT const char *jl_filename = "no file";
jl_module_t *jl_old_base_module = NULL;
// the Main we started with, in case it is switched
jl_module_t *jl_internal_main_module = NULL;
jl_value_t *jl_toplevel_eval_flex(jl_value_t *e, int fast);
void jl_add_standard_imports(jl_module_t *m)
{
assert(jl_base_module != NULL);
// using Base
jl_module_using(m, jl_base_module);
// importall Base.Operators
jl_module_t *opmod = (jl_module_t*)jl_get_global(jl_base_module, jl_symbol("Operators"));
if (opmod != NULL)
jl_module_importall(m, opmod);
}
jl_module_t *jl_new_main_module(void)
{
// switch to a new top-level module
if (jl_current_module != jl_main_module && jl_current_module != NULL)
jl_error("Main can only be replaced from the top level");
jl_module_t *old_main = jl_main_module;
jl_main_module = jl_new_module(jl_symbol("Main"));
jl_main_module->parent = jl_main_module;
jl_current_module = jl_main_module;
jl_core_module->parent = jl_main_module;
jl_set_const(jl_main_module, jl_symbol("Core"),
(jl_value_t*)jl_core_module);
jl_set_global(jl_core_module, jl_symbol("Main"),
(jl_value_t*)jl_main_module);
jl_current_task->current_module = jl_main_module;
jl_module_import(jl_main_module, jl_core_module, jl_symbol("eval"));
return old_main;
}
jl_array_t *jl_module_init_order = NULL;
// load time init procedure: in build mode, only record order
void jl_module_load_time_initialize(jl_module_t *m)
{
int build_mode = jl_generating_output();
if (build_mode) {
if (jl_module_init_order == NULL)
jl_module_init_order = jl_alloc_cell_1d(0);
jl_cell_1d_push(jl_module_init_order, (jl_value_t*)m);
jl_function_t *f = jl_module_get_initializer(m);
if (f) jl_get_specialization(f, (jl_tupletype_t*)jl_typeof(jl_emptytuple));
}
else {
jl_module_run_initializer(m);
}
}
extern void jl_get_system_hooks(void);
jl_value_t *jl_eval_module_expr(jl_expr_t *ex)
{
static arraylist_t module_stack;
static int initialized=0;
static jl_module_t *outermost = NULL;
if (!initialized) {
arraylist_new(&module_stack, 0);
initialized = 1;
}
assert(ex->head == module_sym);
jl_module_t *last_module = jl_current_module;
if (jl_array_len(ex->args) != 3 || !jl_is_expr(jl_exprarg(ex,2))) {
jl_error("syntax: malformed module expression");
}
int std_imports = (jl_exprarg(ex,0)==jl_true);
jl_sym_t *name = (jl_sym_t*)jl_exprarg(ex, 1);
if (!jl_is_symbol(name)) {
jl_type_error("module", (jl_value_t*)jl_sym_type, (jl_value_t*)name);
}
jl_module_t *parent_module = jl_current_module;
jl_binding_t *b = jl_get_binding_wr(parent_module, name);
jl_declare_constant(b);
if (b->value != NULL && !jl_generating_output()) {
// suppress warning "replacing module Core.Inference" during bootstrapping
jl_printf(JL_STDERR, "Warning: replacing module %s\n", name->name);
}
jl_module_t *newm = jl_new_module(name);
newm->parent = parent_module;
b->value = (jl_value_t*)newm;
jl_gc_wb_binding(b, newm);
if (parent_module == jl_main_module && name == jl_symbol("Base")) {
// pick up Base module during bootstrap
jl_old_base_module = jl_base_module;
jl_base_module = newm;
// reinitialize global variables
// to pick up new types from Base
jl_errorexception_type = NULL;
jl_argumenterror_type = NULL;
jl_typeerror_type = NULL;
jl_methoderror_type = NULL;
jl_loaderror_type = NULL;
jl_current_task->tls = jl_nothing; // may contain an entry for :SOURCE_FILE that is not valid in the new base
}
// export all modules from Main
if (parent_module == jl_main_module)
jl_module_export(jl_main_module, name);
// add standard imports unless baremodule
if (std_imports) {
if (jl_base_module != NULL) {
jl_add_standard_imports(newm);
}
}
JL_GC_PUSH1(&last_module);
jl_module_t *task_last_m = jl_current_task->current_module;
jl_current_task->current_module = jl_current_module = newm;
jl_module_t *prev_outermost = outermost;
size_t stackidx = module_stack.len;
if (outermost == NULL)
outermost = newm;
jl_array_t *exprs = ((jl_expr_t*)jl_exprarg(ex, 2))->args;
JL_TRY {
for(int i=0; i < jl_array_len(exprs); i++) {
// process toplevel form
jl_value_t *form = jl_cellref(exprs, i);
(void)jl_toplevel_eval_flex(form, 1);
}
}
JL_CATCH {
jl_current_module = last_module;
jl_current_task->current_module = task_last_m;
outermost = prev_outermost;
module_stack.len = stackidx;
jl_rethrow();
}
JL_GC_POP();
jl_current_module = last_module;
jl_current_task->current_module = task_last_m;
outermost = prev_outermost;
#if 0
// some optional post-processing steps
size_t i;
void **table = newm->bindings.table;
for(i=1; i < newm->bindings.size; i+=2) {
if (table[i] != HT_NOTFOUND) {
jl_binding_t *b = (jl_binding_t*)table[i];
// remove non-exported macros
if (b->name->name[0]=='@' && !b->exportp && b->owner==newm)
b->value = NULL;
// error for unassigned exports
/*
if (b->exportp && b->owner==newm && b->value==NULL)
jl_errorf("identifier %s exported from %s is not initialized",
b->name->name, newm->name->name);
*/
}
}
#endif
arraylist_push(&module_stack, newm);
if (outermost == NULL || jl_current_module == jl_main_module) {
size_t i, l=module_stack.len;
for(i = stackidx; i < l; i++) {
jl_module_load_time_initialize((jl_module_t*)module_stack.items[i]);
}
assert(module_stack.len == l);
module_stack.len = stackidx;
}
return (jl_value_t*)newm;
}
// module referenced by TopNode from within m
// this is only needed because of the bootstrapping process:
// - initially Base doesn't exist and top === Core
// - later, it refers to either old Base or new Base
DLLEXPORT jl_module_t *jl_base_relative_to(jl_module_t *m)
{
while (m != m->parent) {
if (m->istopmod)
return m;
m = m->parent;
}
return jl_top_module;
}
int jl_has_intrinsics(jl_expr_t *ast, jl_expr_t *e, jl_module_t *m)
{
if (jl_array_len(e->args) == 0)
return 0;
if (e->head == static_typeof_sym) return 1;
jl_value_t *e0 = jl_exprarg(e,0);
if (e->head == call_sym) {
jl_value_t *sv = jl_static_eval(e0, NULL, m, (jl_value_t*)jl_emptysvec, ast, 0, 0);
if (sv && jl_typeis(sv, jl_intrinsic_type))
return 1;
}
int i;
for(i=0; i < jl_array_len(e->args); i++) {
jl_value_t *a = jl_exprarg(e,i);
if (jl_is_expr(a) && jl_has_intrinsics(ast, (jl_expr_t*)a, m))
return 1;
}
return 0;
}
// heuristic for whether a top-level input should be evaluated with
// the compiler or the interpreter.
int jl_eval_with_compiler_p(jl_expr_t *ast, jl_expr_t *expr, int compileloops, jl_module_t *m)
{
assert(jl_is_expr(expr));
if (expr->head==body_sym && compileloops) {
jl_array_t *body = expr->args;
size_t i, maxlabl=0;
// compile if there are backwards branches
for(i=0; i < jl_array_len(body); i++) {
jl_value_t *stmt = jl_cellref(body,i);
if (jl_is_labelnode(stmt)) {
int l = jl_labelnode_label(stmt);
if (l > maxlabl) maxlabl = l;
}
}
size_t sz = (maxlabl+1+7)/8;
char *labls = (char*)alloca(sz); memset(labls,0,sz);
for(i=0; i < jl_array_len(body); i++) {
jl_value_t *stmt = jl_cellref(body,i);
if (jl_is_labelnode(stmt)) {
int l = jl_labelnode_label(stmt);
labls[l/8] |= (1<<(l&7));
}
else if (compileloops && jl_is_gotonode(stmt)) {
int l = jl_gotonode_label(stmt);
if (labls[l/8]&(1<<(l&7))) {
return 1;
}
}
else if (jl_is_expr(stmt)) {
if (compileloops && ((jl_expr_t*)stmt)->head==goto_ifnot_sym) {
int l = jl_unbox_long(jl_exprarg(stmt,1));
if (labls[l/8]&(1<<(l&7))) {
return 1;
}
}
// to compile code that uses exceptions
/*
if (((jl_expr_t*)stmt)->head == enter_sym) {
return 1;
}
*/
}
}
}
if (jl_has_intrinsics(ast, expr, m)) return 1;
return 0;
}
extern int jl_in_inference;
static jl_value_t *require_func=NULL;
static jl_module_t *eval_import_path_(jl_array_t *args, int retrying)
{
// in .A.B.C, first find a binding for A in the chain of module scopes
// following parent links. then evaluate the rest of the path from there.
// in A.B, look for A in Main first.
jl_sym_t *var = (jl_sym_t*)jl_cellref(args,0);
size_t i=1;
if (!jl_is_symbol(var)) jl_type_error("import or using", (jl_value_t*)jl_sym_type, (jl_value_t*)var);
jl_module_t *m;
if (var != dot_sym) {
m = jl_main_module;
}
else {
m = jl_current_module;
while (1) {
var = (jl_sym_t*)jl_cellref(args,i);
if (!jl_is_symbol(var)) jl_type_error("import or using", (jl_value_t*)jl_sym_type, (jl_value_t*)var);
i++;
if (var != dot_sym) {
if (i == jl_array_len(args))
return m;
else
break;
}
m = m->parent;
}
}
while (1) {
if (jl_binding_resolved_p(m, var)) {
jl_binding_t *mb = jl_get_binding(m, var);
jl_module_t *m0 = m;
int isimp = jl_is_imported(m, var);
assert(mb != NULL);
if (mb->owner == m0 || isimp) {
m = (jl_module_t*)mb->value;
if ((mb->owner == m0 && m != NULL && !jl_is_module(m)) ||
(isimp && (m == NULL || !jl_is_module(m))))
jl_errorf("invalid module path (%s does not name a module)", var->name);
// If the binding has been resolved but is (1) undefined, and (2) owned
// by the module we're importing into, then allow the import into the
// undefined variable (by setting m back to m0).
if (m == NULL)
m = m0;
else
break;
}
}
if (m == jl_main_module) {
if (!retrying && i==1) { // (i==1) => no require() for relative imports
if (require_func == NULL && jl_base_module != NULL)
require_func = jl_get_global(jl_base_module, jl_symbol("require"));
if (require_func != NULL) {
jl_value_t *str = jl_cstr_to_string(var->name);
JL_GC_PUSH1(&str);
jl_apply((jl_function_t*)require_func, &str, 1);
JL_GC_POP();
return eval_import_path_(args, 1);
}
}
}
if (retrying && require_func) {
jl_printf(JL_STDERR, "Warning: requiring \"%s\" did not define a corresponding module.\n", var->name);
return NULL;
}
else {
jl_errorf("in module path: %s not defined", var->name);
}
}
for(; i < jl_array_len(args)-1; i++) {
jl_value_t *s = jl_cellref(args,i);
assert(jl_is_symbol(s));
m = (jl_module_t*)jl_eval_global_var(m, (jl_sym_t*)s);
if (!jl_is_module(m))
jl_errorf("invalid import statement");
}
return m;
}
static jl_module_t *eval_import_path(jl_array_t *args)
{
return eval_import_path_(args, 0);
}
jl_value_t *jl_toplevel_eval_body(jl_array_t *stmts);
int jl_is_toplevel_only_expr(jl_value_t *e)
{
return jl_is_expr(e) &&
(((jl_expr_t*)e)->head == module_sym ||
((jl_expr_t*)e)->head == importall_sym ||
((jl_expr_t*)e)->head == import_sym ||
((jl_expr_t*)e)->head == using_sym ||
((jl_expr_t*)e)->head == export_sym ||
((jl_expr_t*)e)->head == toplevel_sym);
}
jl_value_t *jl_toplevel_eval_flex(jl_value_t *e, int fast)
{
//jl_show(ex);
//jl_printf(JL_STDOUT, "\n");
if (!jl_is_expr(e))
return jl_interpret_toplevel_expr(e);
jl_expr_t *ex = (jl_expr_t*)e;
if (ex->head == null_sym || ex->head == error_sym) {
// expression types simple enough not to need expansion
return jl_interpret_toplevel_expr(e);
}
if (ex->head == module_sym) {
return jl_eval_module_expr(ex);
}
// handle import, using, importall, export toplevel-only forms
if (ex->head == importall_sym) {
jl_module_t *m = eval_import_path(ex->args);
if (m==NULL) return jl_nothing;
jl_sym_t *name = (jl_sym_t*)jl_cellref(ex->args, jl_array_len(ex->args)-1);
if (!jl_is_symbol(name))
jl_error("syntax: malformed \"importall\" statement");
m = (jl_module_t*)jl_eval_global_var(m, name);
if (!jl_is_module(m))
jl_errorf("invalid %s statement: name exists but does not refer to a module", ex->head->name);
jl_module_importall(jl_current_module, m);
return jl_nothing;
}
if (ex->head == using_sym) {
jl_module_t *m = eval_import_path(ex->args);
if (m==NULL) return jl_nothing;
jl_sym_t *name = (jl_sym_t*)jl_cellref(ex->args, jl_array_len(ex->args)-1);
if (!jl_is_symbol(name))
jl_error("syntax: malformed \"using\" statement");
jl_module_t *u = (jl_module_t*)jl_eval_global_var(m, name);
if (jl_is_module(u)) {
jl_module_using(jl_current_module, u);
}
else {
jl_module_use(jl_current_module, m, name);
}
return jl_nothing;
}
if (ex->head == import_sym) {
jl_module_t *m = eval_import_path(ex->args);
if (m==NULL) return jl_nothing;
jl_sym_t *name = (jl_sym_t*)jl_cellref(ex->args, jl_array_len(ex->args)-1);
if (!jl_is_symbol(name))
jl_error("syntax: malformed \"import\" statement");
jl_module_import(jl_current_module, m, name);
return jl_nothing;
}
if (ex->head == export_sym) {
for(size_t i=0; i < jl_array_len(ex->args); i++) {
jl_sym_t *name = (jl_sym_t*)jl_cellref(ex->args, i);
if (!jl_is_symbol(name))
jl_error("syntax: malformed \"export\" statement");
jl_module_export(jl_current_module, name);
}
return jl_nothing;
}
if (ex->head == toplevel_sym) {
int i=0; jl_value_t *res=jl_nothing;
for(i=0; i < jl_array_len(ex->args); i++) {
res = jl_toplevel_eval_flex(jl_cellref(ex->args, i), fast);
}
return res;
}
jl_value_t *thunk=NULL;
jl_value_t *result;
jl_lambda_info_t *thk=NULL;
int ewc = 0;
JL_GC_PUSH3(&thunk, &thk, &ex);
if (ex->head != body_sym && ex->head != thunk_sym && ex->head != return_sym &&
ex->head != method_sym) {
// not yet expanded
ex = (jl_expr_t*)jl_expand(e);
}
jl_sym_t *head = jl_is_expr(ex) ? ex->head : NULL;
if (head == toplevel_sym) {
int i=0; jl_value_t *res=jl_nothing;
for(i=0; i < jl_array_len(ex->args); i++) {
res = jl_toplevel_eval_flex(jl_cellref(ex->args, i), fast);
}
JL_GC_POP();
return res;
}
if (head == thunk_sym) {
thk = (jl_lambda_info_t*)jl_exprarg(ex,0);
assert(jl_is_lambda_info(thk));
assert(jl_is_expr(thk->ast));
ewc = jl_eval_with_compiler_p((jl_expr_t*)thk->ast, jl_lam_body((jl_expr_t*)thk->ast), fast, jl_current_module);
if (!ewc) {
if (jl_lam_vars_captured((jl_expr_t*)thk->ast)) {
// interpreter doesn't handle closure environment
ewc = 1;
}
}
}
else {
if (head && jl_eval_with_compiler_p(NULL, (jl_expr_t*)ex, fast, jl_current_module)) {
thk = jl_wrap_expr((jl_value_t*)ex);
ewc = 1;
}
else {
if (head == body_sym) {
result = jl_toplevel_eval_body(ex->args);
}
else if (jl_is_toplevel_only_expr((jl_value_t*)ex)) {
result = jl_toplevel_eval((jl_value_t*)ex);
}
else {
result = jl_interpret_toplevel_expr((jl_value_t*)ex);
}
JL_GC_POP();
return result;
}
}
if (ewc) {
thunk = (jl_value_t*)jl_new_closure(NULL, (jl_value_t*)jl_emptysvec, thk);
if (!jl_in_inference) {
jl_type_infer(thk, jl_tuple_type, thk);
}
result = jl_apply((jl_function_t*)thunk, NULL, 0);
}
else {
result = jl_interpret_toplevel_thunk(thk);
}
JL_GC_POP();
return result;
}
jl_value_t *jl_toplevel_eval(jl_value_t *v)
{
return jl_toplevel_eval_flex(v, 1);
}
// repeatedly call jl_parse_next and eval everything
jl_value_t *jl_parse_eval_all(const char *fname, size_t len)
{
//jl_printf(JL_STDERR, "***** loading %s\n", fname);
int last_lineno = jl_lineno;
const char *last_filename = jl_filename;
jl_lineno = 0;
jl_filename = fname;
jl_value_t *fn=NULL, *ln=NULL, *form=NULL, *result=jl_nothing;
JL_GC_PUSH4(&fn, &ln, &form, &result);
JL_TRY {
// handle syntax error
while (1) {
form = jl_parse_next();
if (form == NULL)
break;
if (jl_is_expr(form)) {
if (((jl_expr_t*)form)->head == jl_incomplete_sym) {
jl_errorf("syntax: %s", jl_string_data(jl_exprarg(form,0)));
}
if (((jl_expr_t*)form)->head == error_sym) {
jl_interpret_toplevel_expr(form);
}
}
result = jl_toplevel_eval_flex(form, 1);
}
}
JL_CATCH {
jl_stop_parsing();
fn = jl_pchar_to_string(fname, strlen(fname));
ln = jl_box_long(jl_lineno);
jl_lineno = last_lineno;
jl_filename = last_filename;
if (jl_loaderror_type == NULL) {
jl_rethrow();
}
else {
jl_rethrow_other(jl_new_struct(jl_loaderror_type, fn, ln,
jl_exception_in_transit));
}
}
jl_stop_parsing();
jl_lineno = last_lineno;
jl_filename = last_filename;
JL_GC_POP();
return result;
}
jl_value_t *jl_load(const char *fname)
{
if (jl_current_module->istopmod) {
jl_printf(JL_STDOUT, "%s\r\n", fname);
#ifdef _OS_WINDOWS_
uv_run(uv_default_loop(), (uv_run_mode)1);
#endif
}
char *fpath = (char*)fname;
uv_stat_t stbuf;
if (jl_stat(fpath, (char*)&stbuf) != 0 || (stbuf.st_mode & S_IFMT) != S_IFREG) {
jl_errorf("could not open file %s", fpath);
}
if (jl_start_parsing_file(fpath) != 0) {
jl_errorf("could not open file %s", fpath);
}
jl_value_t *result = jl_parse_eval_all(fpath, strlen(fpath));
if (fpath != fname) free(fpath);
return result;
}
// load from filename given as a ByteString object
DLLEXPORT jl_value_t *jl_load_(jl_value_t *str)
{
return jl_load(jl_string_data(str));
}
// type definition ------------------------------------------------------------
void jl_reinstantiate_inner_types(jl_datatype_t *t);
void jl_set_datatype_super(jl_datatype_t *tt, jl_value_t *super)
{
if (!jl_is_datatype(super) || !jl_is_abstracttype(super) ||
tt->name == ((jl_datatype_t*)super)->name ||
jl_subtype(super,(jl_value_t*)jl_vararg_type,0) ||
jl_is_tuple_type(super) ||
jl_subtype(super,(jl_value_t*)jl_type_type,0)) {
jl_errorf("invalid subtyping in definition of %s",tt->name->name->name);
}
tt->super = (jl_datatype_t*)super;
jl_gc_wb(tt, tt->super);
if (jl_svec_len(tt->parameters) > 0) {
tt->name->cache = jl_emptysvec;
tt->name->linearcache = jl_emptysvec;
jl_reinstantiate_inner_types(tt);
}
}
// method definition ----------------------------------------------------------
extern int jl_boot_file_loaded;
static int type_contains(jl_value_t *ty, jl_value_t *x);
static int svec_contains(jl_svec_t *svec, jl_value_t *x)
{
assert(jl_is_svec(svec));
size_t i, l=jl_svec_len(svec);
for(i=0; i < l; i++) {
jl_value_t *e = jl_svecref(svec, i);
if (e==x || type_contains(e, x))
return 1;
}
return 0;
}
static int type_contains(jl_value_t *ty, jl_value_t *x)
{
if (ty == x) return 1;
if (jl_is_uniontype(ty))
return svec_contains((jl_svec_t*)jl_fieldref(ty,0), x);
if (jl_is_datatype(ty))
return svec_contains(((jl_datatype_t*)ty)->parameters, x);
return 0;
}
void print_func_loc(JL_STREAM *s, jl_lambda_info_t *li);
// empty generic function def
// TODO: maybe have jl_method_def call this
DLLEXPORT jl_value_t *jl_generic_function_def(jl_sym_t *name, jl_value_t **bp, jl_value_t *bp_owner,
jl_binding_t *bnd)
{
jl_value_t *gf=NULL;
if (bnd && bnd->value != NULL && !bnd->constp)
jl_errorf("cannot define function %s; it already has a value", bnd->name->name);
if (*bp != NULL) {
gf = *bp;
if (!jl_is_gf(gf))
jl_errorf("cannot define function %s; it already has a value", name->name);
}
if (bnd)
bnd->constp = 1;
if (*bp == NULL) {
gf = (jl_value_t*)jl_new_generic_function(name);
*bp = gf;
if (bp_owner) jl_gc_wb(bp_owner, gf);
}
return gf;
}
static jl_lambda_info_t *jl_copy_lambda_info(jl_lambda_info_t *linfo)
{
jl_lambda_info_t *new_linfo =
jl_new_lambda_info(linfo->ast, linfo->sparams);
new_linfo->tfunc = linfo->tfunc;
new_linfo->name = linfo->name;
new_linfo->roots = linfo->roots;
new_linfo->specTypes = linfo->specTypes;
new_linfo->unspecialized = linfo->unspecialized;
new_linfo->specializations = linfo->specializations;
new_linfo->module = linfo->module;
new_linfo->def = linfo->def;
new_linfo->capt = linfo->capt;
new_linfo->file = linfo->file;
new_linfo->line = linfo->line;
return new_linfo;
}
DLLEXPORT jl_value_t *jl_method_def(jl_sym_t *name, jl_value_t **bp, jl_value_t *bp_owner,
jl_binding_t *bnd,
jl_svec_t *argdata, jl_function_t *f, jl_value_t *isstaged,
jl_value_t *call_func, int iskw)
{
// argdata is svec({types...}, svec(typevars...))
jl_tupletype_t *argtypes = (jl_tupletype_t*)jl_svecref(argdata,0);
jl_svec_t *tvars = (jl_svec_t*)jl_svecref(argdata,1);
jl_value_t *gf = NULL;
JL_GC_PUSH4(&gf, &tvars, &argtypes, &f);
if (bnd && bnd->value != NULL && !bnd->constp) {
jl_errorf("cannot define function %s; it already has a value", bnd->name->name);
}
if (*bp != NULL) {
gf = *bp;
if (!jl_is_gf(gf)) {
if (jl_is_datatype(gf)) {
// DataType: define `call`, for backwards compat with outer constructors
if (call_func == NULL)
call_func = (jl_value_t*)jl_module_call_func(jl_current_module);
size_t na = jl_nparams(argtypes);
jl_svec_t *newargtypes = jl_alloc_svec(1 + na);
jl_lambda_info_t *new_linfo = NULL;
JL_GC_PUSH2(&newargtypes, &new_linfo);
new_linfo = jl_copy_lambda_info(f->linfo);
f = jl_new_closure(f->fptr, f->env, new_linfo);
size_t i=0;
if (iskw) {
assert(na > 0);
// for kw sorter, keep container argument first
jl_svecset(newargtypes, 0, jl_tparam(argtypes, 0));
i++;
}
jl_svecset(newargtypes, i, jl_wrap_Type(gf));
i++;
for(; i < na+1; i++) {
jl_svecset(newargtypes, i, jl_tparam(argtypes, i-1));
}
argtypes = jl_apply_tuple_type(newargtypes);
JL_GC_POP();
gf = call_func;
name = call_sym;
// edit args, insert type first
if (!jl_is_expr(f->linfo->ast)) {
f->linfo->ast = jl_uncompress_ast(f->linfo, f->linfo->ast);
jl_gc_wb(f->linfo, f->linfo->ast);
}
else {
// Do not mutate the original ast since it might
// be reused somewhere else
f->linfo->ast = jl_copy_ast(f->linfo->ast);
jl_gc_wb(f->linfo, f->linfo->ast);
}
jl_array_t *al = jl_lam_args((jl_expr_t*)f->linfo->ast);
if (jl_array_len(al) == 0) {
al = jl_alloc_cell_1d(1);
jl_exprargset(f->linfo->ast, 0, (jl_value_t*)al);
}
else {
jl_array_grow_beg(al, 1);
}
if (iskw) {
jl_cellset(al, 0, jl_cellref(al, 1));
jl_cellset(al, 1, (jl_value_t*)jl_gensym());
}
else {
jl_cellset(al, 0, (jl_value_t*)jl_gensym());
}
}
if (!jl_is_gf(gf)) {
jl_errorf("cannot define function %s; it already has a value", name->name);
}
}
if (iskw) {
bp = (jl_value_t**)&((jl_methtable_t*)((jl_function_t*)gf)->env)->kwsorter;
bp_owner = (jl_value_t*)((jl_function_t*)gf)->env;
gf = *bp;
}
}
// TODO
size_t na = jl_nparams(argtypes);
for(size_t i=0; i < na; i++) {
jl_value_t *elt = jl_tparam(argtypes,i);
if (!jl_is_type(elt) && !jl_is_typevar(elt)) {
jl_lambda_info_t *li = f->linfo;
jl_exceptionf(jl_argumenterror_type, "invalid type for argument %s in method definition for %s at %s:%d",
jl_lam_argname(li,i)->name, name->name, li->file->name, li->line);
}
}
int ishidden = !!strchr(name->name, '#');
for(size_t i=0; i < jl_svec_len(tvars); i++) {
jl_value_t *tv = jl_svecref(tvars,i);
if (!jl_is_typevar(tv))
jl_type_error_rt(name->name, "method definition", (jl_value_t*)jl_tvar_type, tv);
if (!ishidden && !type_contains((jl_value_t*)argtypes, tv)) {
jl_printf(JL_STDERR, "Warning: static parameter %s does not occur in signature for %s",
((jl_tvar_t*)tv)->name->name, name->name);
print_func_loc(JL_STDERR, f->linfo);
jl_printf(JL_STDERR, ".\nThe method will not be callable.\n");
}
}
if (bnd) {
bnd->constp = 1;
}
if (*bp == NULL) {
gf = (jl_value_t*)jl_new_generic_function(name);
*bp = gf;
if (bp_owner) jl_gc_wb(bp_owner, gf);
}
assert(jl_is_function(f));
assert(jl_is_tuple_type(argtypes));
assert(jl_is_svec(tvars));
jl_add_method((jl_function_t*)gf, argtypes, f, tvars, isstaged == jl_true);
if (jl_boot_file_loaded &&
f->linfo && f->linfo->ast && jl_is_expr(f->linfo->ast)) {
jl_lambda_info_t *li = f->linfo;
li->ast = jl_compress_ast(li, li->ast);
jl_gc_wb(li, li->ast);
}
JL_GC_POP();
return gf;
}
void jl_check_static_parameter_conflicts(jl_lambda_info_t *li, jl_svec_t *t, jl_sym_t *fname)
{
jl_array_t *vinfo;
size_t nvars;
if (li->ast && jl_is_expr(li->ast)) {
vinfo = jl_lam_vinfo((jl_expr_t*)li->ast);
nvars = jl_array_len(vinfo);
for(size_t i=0; i < jl_svec_len(t); i++) {
for(size_t j=0; j < nvars; j++) {
jl_value_t *tv = jl_svecref(t,i);
if (jl_is_typevar(tv)) {
if ((jl_sym_t*)jl_cellref((jl_array_t*)jl_cellref(vinfo,j),0) ==
((jl_tvar_t*)tv)->name) {
jl_printf(JL_STDERR,
"Warning: local variable %s conflicts with a static parameter in %s",
((jl_tvar_t*)tv)->name->name, fname->name);
print_func_loc(JL_STDERR, li);
jl_printf(JL_STDERR, ".\n");
}
}
}
}
}
}
#ifdef __cplusplus
}
#endif