-
-
Notifications
You must be signed in to change notification settings - Fork 55.7k
/
gen2.py
executable file
·1486 lines (1261 loc) · 59.2 KB
/
gen2.py
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
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
#!/usr/bin/env python
from __future__ import print_function
import hdr_parser, sys, re
from string import Template
from collections import namedtuple
from itertools import chain
from typing_stubs_generator import TypingStubsGenerator
if sys.version_info[0] >= 3:
from io import StringIO
else:
from cStringIO import StringIO
if sys.version_info >= (3, 6):
from typing_stubs_generation import SymbolName
else:
SymbolName = namedtuple('SymbolName', ('namespaces', 'classes', 'name'))
def parse_symbol_name(cls, full_symbol_name, known_namespaces):
chunks = full_symbol_name.split('.')
namespaces, name = chunks[:-1], chunks[-1]
classes = []
while len(namespaces) > 0 and '.'.join(namespaces) not in known_namespaces:
classes.insert(0, namespaces.pop())
return cls(tuple(namespaces), tuple(classes), name)
setattr(SymbolName, "parse", classmethod(parse_symbol_name))
forbidden_arg_types = ["void*"]
ignored_arg_types = ["RNG*"]
pass_by_val_types = ["Point*", "Point2f*", "Rect*", "String*", "double*", "float*", "int*"]
gen_template_check_self = Template("""
${cname} * self1 = 0;
if (!pyopencv_${name}_getp(self, self1))
return failmsgp("Incorrect type of self (must be '${name}' or its derivative)");
${pname} _self_ = ${cvt}(self1);
""")
gen_template_call_constructor_prelude = Template("""new (&(self->v)) Ptr<$cname>(); // init Ptr with placement new
if(self) """)
gen_template_call_constructor = Template("""self->v.reset(new ${cname}${py_args})""")
gen_template_simple_call_constructor_prelude = Template("""if(self) """)
gen_template_simple_call_constructor = Template("""new (&(self->v)) ${cname}${py_args}""")
gen_template_parse_args = Template("""const char* keywords[] = { $kw_list, NULL };
if( PyArg_ParseTupleAndKeywords(py_args, kw, "$fmtspec", (char**)keywords, $parse_arglist)$code_cvt )""")
gen_template_func_body = Template("""$code_decl
$code_parse
{
${code_prelude}ERRWRAP2($code_fcall);
$code_ret;
}
""")
gen_template_mappable = Template("""
{
${mappable} _src;
if (pyopencv_to_safe(src, _src, info))
{
return cv_mappable_to(_src, dst);
}
}
""")
gen_template_type_decl = Template("""
// Converter (${name})
template<>
struct PyOpenCV_Converter< ${cname} >
{
static PyObject* from(const ${cname}& r)
{
return pyopencv_${name}_Instance(r);
}
static bool to(PyObject* src, ${cname}& dst, const ArgInfo& info)
{
if(!src || src == Py_None)
return true;
${cname} * dst_;
if (pyopencv_${name}_getp(src, dst_))
{
dst = *dst_;
return true;
}
${mappable_code}
failmsg("Expected ${cname} for argument '%s'", info.name);
return false;
}
};
""")
gen_template_map_type_cvt = Template("""
template<> bool pyopencv_to(PyObject* src, ${cname}& dst, const ArgInfo& info);
""")
gen_template_set_prop_from_map = Template("""
if( PyMapping_HasKeyString(src, (char*)"$propname") )
{
tmp = PyMapping_GetItemString(src, (char*)"$propname");
ok = tmp && pyopencv_to_safe(tmp, dst.$propname, ArgInfo("$propname", false));
Py_DECREF(tmp);
if(!ok) return false;
}""")
gen_template_type_impl = Template("""
// GetSet (${name})
${getset_code}
// Methods (${name})
${methods_code}
// Tables (${name})
static PyGetSetDef pyopencv_${name}_getseters[] =
{${getset_inits}
{NULL} /* Sentinel */
};
static PyMethodDef pyopencv_${name}_methods[] =
{
${methods_inits}
{NULL, NULL}
};
""")
gen_template_get_prop = Template("""
static PyObject* pyopencv_${name}_get_${member}(pyopencv_${name}_t* p, void *closure)
{
return pyopencv_from(p->v${access}${member});
}
""")
gen_template_get_prop_algo = Template("""
static PyObject* pyopencv_${name}_get_${member}(pyopencv_${name}_t* p, void *closure)
{
$cname* _self_ = dynamic_cast<$cname*>(p->v.get());
if (!_self_)
return failmsgp("Incorrect type of object (must be '${name}' or its derivative)");
return pyopencv_from(_self_${access}${member});
}
""")
gen_template_set_prop = Template("""
static int pyopencv_${name}_set_${member}(pyopencv_${name}_t* p, PyObject *value, void *closure)
{
if (!value)
{
PyErr_SetString(PyExc_TypeError, "Cannot delete the ${member} attribute");
return -1;
}
return pyopencv_to_safe(value, p->v${access}${member}, ArgInfo("value", false)) ? 0 : -1;
}
""")
gen_template_set_prop_algo = Template("""
static int pyopencv_${name}_set_${member}(pyopencv_${name}_t* p, PyObject *value, void *closure)
{
if (!value)
{
PyErr_SetString(PyExc_TypeError, "Cannot delete the ${member} attribute");
return -1;
}
$cname* _self_ = dynamic_cast<$cname*>(p->v.get());
if (!_self_)
{
failmsgp("Incorrect type of object (must be '${name}' or its derivative)");
return -1;
}
return pyopencv_to_safe(value, _self_${access}${member}, ArgInfo("value", false)) ? 0 : -1;
}
""")
gen_template_prop_init = Template("""
{(char*)"${export_member_name}", (getter)pyopencv_${name}_get_${member}, NULL, (char*)"${export_member_name}", NULL},""")
gen_template_rw_prop_init = Template("""
{(char*)"${export_member_name}", (getter)pyopencv_${name}_get_${member}, (setter)pyopencv_${name}_set_${member}, (char*)"${export_member_name}", NULL},""")
gen_template_overloaded_function_call = Template("""
{
${variant}
pyPopulateArgumentConversionErrors();
}
""")
class FormatStrings:
string = 's'
unsigned_char = 'b'
short_int = 'h'
int = 'i'
unsigned_int = 'I'
long = 'l'
unsigned_long = 'k'
long_long = 'L'
unsigned_long_long = 'K'
size_t = 'n'
float = 'f'
double = 'd'
object = 'O'
ArgTypeInfo = namedtuple('ArgTypeInfo',
['atype', 'format_str', 'default_value', 'strict_conversion'])
# strict_conversion is False by default
ArgTypeInfo.__new__.__defaults__ = (False,)
simple_argtype_mapping = {
"bool": ArgTypeInfo("bool", FormatStrings.unsigned_char, "0", True),
"size_t": ArgTypeInfo("size_t", FormatStrings.unsigned_long_long, "0", True),
"int": ArgTypeInfo("int", FormatStrings.int, "0", True),
"float": ArgTypeInfo("float", FormatStrings.float, "0.f", True),
"double": ArgTypeInfo("double", FormatStrings.double, "0", True),
"c_string": ArgTypeInfo("char*", FormatStrings.string, '(char*)""'),
"string": ArgTypeInfo("std::string", FormatStrings.object, None, True),
"Stream": ArgTypeInfo("Stream", FormatStrings.object, 'Stream::Null()', True),
"cuda_Stream": ArgTypeInfo("cuda::Stream", FormatStrings.object, "cuda::Stream::Null()", True),
"cuda_GpuMat": ArgTypeInfo("cuda::GpuMat", FormatStrings.object, "cuda::GpuMat()", True),
"UMat": ArgTypeInfo("UMat", FormatStrings.object, 'UMat()', True), # FIXIT: switch to CV_EXPORTS_W_SIMPLE as UMat is already a some kind of smart pointer
"cann_AscendMat": ArgTypeInfo("cann::AscendMat", FormatStrings.object, "cann::AscendMat()", True),
}
# Set of reserved keywords for Python. Can be acquired via the following call
# $ python -c "help('keywords')"
# Keywords that are reserved in C/C++ are excluded because they can not be
# used as variables identifiers
python_reserved_keywords = {
"True", "None", "False", "as", "assert", "def", "del", "elif", "except", "exec",
"finally", "from", "global", "import", "in", "is", "lambda", "nonlocal",
"pass", "print", "raise", "with", "yield"
}
def normalize_class_name(name):
return re.sub(r"^cv\.", "", name).replace(".", "_")
def get_type_format_string(arg_type_info):
if arg_type_info.strict_conversion:
return FormatStrings.object
else:
return arg_type_info.format_str
class ClassProp(object):
def __init__(self, decl):
self.tp = decl[0].replace("*", "_ptr")
self.name = decl[1]
self.default_value = decl[2]
self.readonly = True
if "/RW" in decl[3]:
self.readonly = False
@property
def export_name(self):
if self.name in python_reserved_keywords:
return self.name + "_"
return self.name
class ClassInfo(object):
def __init__(self, name, decl=None, codegen=None):
# Scope name can be a module or other class e.g. cv::SimpleBlobDetector::Params
self.original_scope_name, self.original_name = name.rsplit(".", 1)
# In case scope refer the outer class exported with different name
if codegen:
self.export_scope_name = codegen.get_export_scope_name(
self.original_scope_name
)
else:
self.export_scope_name = self.original_scope_name
self.export_scope_name = re.sub(r"^cv\.?", "", self.export_scope_name)
self.export_name = self.original_name
self.class_id = normalize_class_name(name)
self.cname = name.replace(".", "::")
self.ismap = False
self.is_parameters = False
self.issimple = False
self.isalgorithm = False
self.methods = {}
self.props = []
self.mappables = []
self.consts = {}
self.base = None
self.constructor = None
if decl:
bases = decl[1].split()[1:]
if len(bases) > 1:
print("Note: Class %s has more than 1 base class (not supported by Python C extensions)" % (self.cname,))
print(" Bases: ", " ".join(bases))
print(" Only the first base class will be used")
#return sys.exit(-1)
elif len(bases) == 1:
self.base = bases[0].strip(",")
if self.base.startswith("cv::"):
self.base = self.base[4:]
if self.base == "Algorithm":
self.isalgorithm = True
self.base = self.base.replace("::", "_")
for m in decl[2]:
if m.startswith("="):
# Aliasing only affects the exported class name, not class identifier
self.export_name = m[1:]
elif m == "/Map":
self.ismap = True
elif m == "/Simple":
self.issimple = True
elif m == "/Params":
self.is_parameters = True
self.issimple = True
self.props = [ClassProp(p) for p in decl[3]]
if not self.has_export_alias and self.original_name.startswith("Cv"):
self.export_name = self.export_name[2:]
@property
def wname(self):
if len(self.export_scope_name) > 0:
return self.export_scope_name.replace(".", "_") + "_" + self.export_name
return self.export_name
@property
def name(self):
return self.class_id
@property
def full_export_scope_name(self):
return "cv." + self.export_scope_name if len(self.export_scope_name) else "cv"
@property
def full_export_name(self):
return self.full_export_scope_name + "." + self.export_name
@property
def full_original_name(self):
return self.original_scope_name + "." + self.original_name
@property
def has_export_alias(self):
return self.export_name != self.original_name
def gen_map_code(self, codegen):
all_classes = codegen.classes
code = "static bool pyopencv_to(PyObject* src, %s& dst, const ArgInfo& info)\n{\n PyObject* tmp;\n bool ok;\n" % (self.cname)
code += "".join([gen_template_set_prop_from_map.substitute(propname=p.name,proptype=p.tp) for p in self.props])
if self.base:
code += "\n return pyopencv_to_safe(src, (%s&)dst, info);\n}\n" % all_classes[self.base].cname
else:
code += "\n return true;\n}\n"
return code
def gen_code(self, codegen):
all_classes = codegen.classes
if self.ismap:
return self.gen_map_code(codegen)
getset_code = StringIO()
getset_inits = StringIO()
sorted_props = [(p.name, p) for p in self.props]
sorted_props.sort()
access_op = "->"
if self.issimple:
access_op = "."
for pname, p in sorted_props:
if self.isalgorithm:
getset_code.write(gen_template_get_prop_algo.substitute(name=self.name, cname=self.cname, member=pname, membertype=p.tp, access=access_op))
else:
getset_code.write(gen_template_get_prop.substitute(name=self.name, member=pname, membertype=p.tp, access=access_op))
if p.readonly:
getset_inits.write(gen_template_prop_init.substitute(name=self.name, member=pname, export_member_name=p.export_name))
else:
if self.isalgorithm:
getset_code.write(gen_template_set_prop_algo.substitute(name=self.name, cname=self.cname, member=pname, membertype=p.tp, access=access_op))
else:
getset_code.write(gen_template_set_prop.substitute(name=self.name, member=pname, membertype=p.tp, access=access_op))
getset_inits.write(gen_template_rw_prop_init.substitute(name=self.name, member=pname, export_member_name=p.export_name))
methods_code = StringIO()
methods_inits = StringIO()
sorted_methods = list(self.methods.items())
sorted_methods.sort()
if self.constructor is not None:
methods_code.write(self.constructor.gen_code(codegen))
for mname, m in sorted_methods:
methods_code.write(m.gen_code(codegen))
methods_inits.write(m.get_tab_entry())
code = gen_template_type_impl.substitute(name=self.name,
getset_code=getset_code.getvalue(),
getset_inits=getset_inits.getvalue(),
methods_code=methods_code.getvalue(),
methods_inits=methods_inits.getvalue())
return code
def gen_def(self, codegen):
all_classes = codegen.classes
baseptr = "NoBase"
if self.base and self.base in all_classes:
baseptr = all_classes[self.base].name
constructor_name = "0"
if self.constructor is not None:
constructor_name = self.constructor.get_wrapper_name()
return 'CVPY_TYPE({}, {}, {}, {}, {}, {}, "{}");\n'.format(
self.export_name,
self.class_id,
self.cname if self.issimple else "Ptr<{}>".format(self.cname),
self.original_name if self.issimple else "Ptr",
baseptr,
constructor_name,
# Leading dot is required to provide correct class naming
"." + self.export_scope_name if len(self.export_scope_name) > 0 else self.export_scope_name
)
def handle_ptr(tp):
if tp.startswith('Ptr_'):
tp = 'Ptr<' + "::".join(tp.split('_')[1:]) + '>'
return tp
class ArgInfo(object):
def __init__(self, atype, name, default_value, modifiers=(),
enclosing_arg=None):
# type: (ArgInfo, str, str, str, tuple[str, ...], ArgInfo | None) -> None
self.tp = handle_ptr(atype)
self.name = name
self.defval = default_value
self._modifiers = tuple(modifiers)
self.isarray = False
self.is_smart_ptr = self.tp.startswith('Ptr<') # FIXIT: handle through modifiers - need to modify parser
self.arraylen = 0
self.arraycvt = None
for m in self._modifiers:
if m.startswith("/A"):
self.isarray = True
self.arraylen = m[2:].strip()
elif m.startswith("/CA"):
self.isarray = True
self.arraycvt = m[2:].strip()
self.py_inputarg = False
self.py_outputarg = False
self.enclosing_arg = enclosing_arg
def __str__(self):
return 'ArgInfo("{}", tp="{}", default="{}", in={}, out={})'.format(
self.name, self.tp, self.defval, self.inputarg,
self.outputarg
)
def __repr__(self):
return str(self)
@property
def export_name(self):
if self.name in python_reserved_keywords:
return self.name + '_'
return self.name
@property
def inputarg(self):
return '/O' not in self._modifiers
@property
def outputarg(self):
return '/O' in self._modifiers or '/IO' in self._modifiers
@property
def returnarg(self):
return self.outputarg
@property
def isrvalueref(self):
return '/RRef' in self._modifiers
@property
def full_name(self):
if self.enclosing_arg is None:
return self.name
return self.enclosing_arg.name + '.' + self.name
def isbig(self):
return self.tp in ["Mat", "vector_Mat",
"cuda::GpuMat", "cuda_GpuMat", "GpuMat",
"vector_GpuMat", "vector_cuda_GpuMat",
"UMat", "vector_UMat", "cann::AscendMat",
"AscendMat", "vector_AscendMat"] # or self.tp.startswith("vector")
def crepr(self):
return "ArgInfo(\"%s\", %d)" % (self.name, self.outputarg)
def find_argument_class_info(argument_type, function_namespace,
function_class_name, known_classes):
# type: (str, str, str, dict[str, ClassInfo]) -> ClassInfo | None
"""Tries to find corresponding class info for the provided argument type
Args:
argument_type (str): Function argument type
function_namespace (str): Namespace of the function declaration
function_class_name (str): Name of the class if function is a method of class
known_classes (dict[str, ClassInfo]): Mapping between string class
identifier and ClassInfo struct.
Returns:
Optional[ClassInfo]: class info struct if the provided argument type
refers to a known C++ class, None otherwise.
"""
possible_classes = tuple(filter(lambda cls: cls.endswith(argument_type), known_classes))
# If argument type is not a known class - just skip it
if not possible_classes:
return None
if len(possible_classes) == 1:
return known_classes[possible_classes[0]]
# If there is more than 1 matched class, try to select the most probable one
# Look for a matched class name in different scope, starting from the
# narrowest one
# First try to find argument inside class scope of the function (if any)
if function_class_name:
type_to_match = function_class_name + '_' + argument_type
if type_to_match in possible_classes:
return known_classes[type_to_match]
else:
type_to_match = argument_type
# Trying to find argument type in the namespace of the function
type_to_match = '{}_{}'.format(
function_namespace.lstrip('cv.').replace('.', '_'), type_to_match
)
if type_to_match in possible_classes:
return known_classes[type_to_match]
# Try to find argument name as is
if argument_type in possible_classes:
return known_classes[argument_type]
# NOTE: parser is broken - some classes might not be visible, depending on
# the order of parsed headers.
# print("[WARNING] Can't select an appropriate class for argument: '",
# argument_type, "'. Possible matches: '", possible_classes, "'")
return None
class FuncVariant(object):
def __init__(self, namespace, classname, name, decl, isconstructor, known_classes, isphantom=False):
self.name = self.wname = name
self.isconstructor = isconstructor
self.isphantom = isphantom
self.docstring = decl[5]
self.rettype = decl[4] or handle_ptr(decl[1])
if self.rettype == "void":
self.rettype = ""
self.args = []
self.array_counters = {}
for arg_decl in decl[3]:
assert len(arg_decl) == 4, \
'ArgInfo contract is violated. Arg declaration should contain:' \
'"arg_type", "name", "default_value", "modifiers". '\
'Got tuple: {}'.format(arg_decl)
ainfo = ArgInfo(atype=arg_decl[0], name=arg_decl[1],
default_value=arg_decl[2], modifiers=arg_decl[3])
if ainfo.isarray and not ainfo.arraycvt:
c = ainfo.arraylen
c_arrlist = self.array_counters.get(c, [])
if c_arrlist:
c_arrlist.append(ainfo.name)
else:
self.array_counters[c] = [ainfo.name]
self.args.append(ainfo)
self.init_pyproto(namespace, classname, known_classes)
def is_arg_optional(self, py_arg_index):
# type: (FuncVariant, int) -> bool
return py_arg_index >= len(self.py_arglist) - self.py_noptargs
def init_pyproto(self, namespace, classname, known_classes):
# string representation of argument list, with '[', ']' symbols denoting optional arguments, e.g.
# "src1, src2[, dst[, mask]]" for cv.add
argstr = ""
# list of all input arguments of the Python function, with the argument numbers:
# [("src1", 0), ("src2", 1), ("dst", 2), ("mask", 3)]
# we keep an argument number to find the respective argument quickly, because
# some of the arguments of C function may not present in the Python function (such as array counters)
# or even go in a different order ("heavy" output parameters of the C function
# become the first optional input parameters of the Python function, and thus they are placed right after
# non-optional input parameters)
arglist = []
# the list of "heavy" output parameters. Heavy parameters are the parameters
# that can be expensive to allocate each time, such as vectors and matrices (see isbig).
outarr_list = []
# the list of output parameters. Also includes input/output parameters.
outlist = []
firstoptarg = 1000000
# Check if there is params structure in arguments
arguments = []
for arg in self.args:
arg_class_info = find_argument_class_info(
arg.tp, namespace, classname, known_classes
)
# If argument refers to the 'named arguments' structure - instead of
# the argument put its properties
if arg_class_info is not None and arg_class_info.is_parameters:
for prop in arg_class_info.props:
# Convert property to ArgIfno and mark that argument is
# a part of the parameters structure:
arguments.append(
ArgInfo(prop.tp, prop.name, prop.default_value,
enclosing_arg=arg)
)
else:
arguments.append(arg)
# Prevent names duplication after named arguments are merged
# to the main arguments list
argument_names = tuple(arg.name for arg in arguments)
assert len(set(argument_names)) == len(argument_names), \
"Duplicate arguments with names '{}' in function '{}'. "\
"Please, check named arguments used in function interface".format(
argument_names, self.name
)
self.args = arguments
for argno, a in enumerate(self.args):
if a.name in self.array_counters:
continue
assert a.tp not in forbidden_arg_types, \
'Forbidden type "{}" for argument "{}" in "{}" ("{}")'.format(
a.tp, a.name, self.name, self.classname
)
if a.tp in ignored_arg_types:
continue
if a.returnarg:
outlist.append((a.name, argno))
if (not a.inputarg) and a.isbig():
outarr_list.append((a.name, argno))
continue
if not a.inputarg:
continue
if not a.defval:
arglist.append((a.name, argno))
else:
firstoptarg = min(firstoptarg, len(arglist))
# if there are some array output parameters before the first default parameter, they
# are added as optional parameters before the first optional parameter
if outarr_list:
arglist += outarr_list
outarr_list = []
arglist.append((a.name, argno))
if outarr_list:
firstoptarg = min(firstoptarg, len(arglist))
arglist += outarr_list
firstoptarg = min(firstoptarg, len(arglist))
noptargs = len(arglist) - firstoptarg
argnamelist = [self.args[argno].export_name for _, argno in arglist]
argstr = ", ".join(argnamelist[:firstoptarg])
argstr = "[, ".join([argstr] + argnamelist[firstoptarg:])
argstr += "]" * noptargs
if self.rettype:
outlist = [("retval", -1)] + outlist
elif self.isconstructor:
assert outlist == []
outlist = [("self", -1)]
if self.isconstructor:
if classname.startswith("Cv"):
classname = classname[2:]
outstr = "<%s object>" % (classname,)
elif outlist:
outstr = ", ".join([o[0] for o in outlist])
else:
outstr = "None"
self.py_arg_str = argstr
self.py_return_str = outstr
self.py_prototype = "%s(%s) -> %s" % (self.wname, argstr, outstr)
self.py_noptargs = noptargs
self.py_arglist = arglist
for _, argno in arglist:
self.args[argno].py_inputarg = True
for _, argno in outlist:
if argno >= 0:
self.args[argno].py_outputarg = True
self.py_outlist = outlist
class FuncInfo(object):
def __init__(self, classname, name, cname, isconstructor, namespace, is_static):
self.classname = classname
self.name = name
self.cname = cname
self.isconstructor = isconstructor
self.namespace = namespace
self.is_static = is_static
self.variants = []
def add_variant(self, decl, known_classes, isphantom=False):
self.variants.append(
FuncVariant(self.namespace, self.classname, self.name, decl,
self.isconstructor, known_classes, isphantom)
)
def get_wrapper_name(self):
name = self.name
if self.classname:
classname = self.classname + "_"
if "[" in name:
name = "getelem"
else:
classname = ""
if self.is_static:
name += "_static"
return "pyopencv_" + self.namespace.replace('.','_') + '_' + classname + name
def get_wrapper_prototype(self, codegen):
full_fname = self.get_wrapper_name()
if self.isconstructor:
return "static int {fn_name}(pyopencv_{type_name}_t* self, PyObject* py_args, PyObject* kw)".format(
fn_name=full_fname, type_name=codegen.classes[self.classname].name)
if self.classname:
self_arg = "self"
else:
self_arg = ""
return "static PyObject* %s(PyObject* %s, PyObject* py_args, PyObject* kw)" % (full_fname, self_arg)
def get_tab_entry(self):
prototype_list = []
docstring_list = []
have_empty_constructor = False
for v in self.variants:
s = v.py_prototype
if (not v.py_arglist) and self.isconstructor:
have_empty_constructor = True
if s not in prototype_list:
prototype_list.append(s)
docstring_list.append(v.docstring)
# if there are just 2 constructors: default one and some other,
# we simplify the notation.
# Instead of ClassName(args ...) -> object or ClassName() -> object
# we write ClassName([args ...]) -> object
if have_empty_constructor and len(self.variants) == 2:
idx = self.variants[1].py_arglist != []
s = self.variants[idx].py_prototype
p1 = s.find("(")
p2 = s.rfind(")")
prototype_list = [s[:p1+1] + "[" + s[p1+1:p2] + "]" + s[p2:]]
# The final docstring will be: Each prototype, followed by
# their relevant doxygen comment
full_docstring = ""
for prototype, body in zip(prototype_list, docstring_list):
full_docstring += Template("$prototype\n$docstring\n\n\n\n").substitute(
prototype=prototype,
docstring='\n'.join(
['. ' + line
for line in body.split('\n')]
)
)
# Escape backslashes, newlines, and double quotes
full_docstring = full_docstring.strip().replace("\\", "\\\\").replace('\n', '\\n').replace("\"", "\\\"")
# Convert unicode chars to xml representation, but keep as string instead of bytes
full_docstring = full_docstring.encode('ascii', errors='xmlcharrefreplace').decode()
return Template(' {"$py_funcname", CV_PY_FN_WITH_KW_($wrap_funcname, $flags), "$py_docstring"},\n'
).substitute(py_funcname = self.variants[0].wname, wrap_funcname=self.get_wrapper_name(),
flags = 'METH_STATIC' if self.is_static else '0', py_docstring = full_docstring)
def gen_code(self, codegen):
all_classes = codegen.classes
proto = self.get_wrapper_prototype(codegen)
code = "%s\n{\n" % (proto,)
code += " using namespace %s;\n\n" % self.namespace.replace('.', '::')
selfinfo = None
ismethod = self.classname != "" and not self.isconstructor
# full name is needed for error diagnostic in PyArg_ParseTupleAndKeywords
fullname = self.name
if self.classname:
selfinfo = all_classes[self.classname]
if not self.isconstructor:
if not self.is_static:
code += gen_template_check_self.substitute(
name=selfinfo.name,
cname=selfinfo.cname if selfinfo.issimple else "Ptr<{}>".format(selfinfo.cname),
pname=(selfinfo.cname + '*') if selfinfo.issimple else "Ptr<{}>".format(selfinfo.cname),
cvt='' if selfinfo.issimple else '*'
)
fullname = selfinfo.wname + "." + fullname
all_code_variants = []
for v in self.variants:
code_decl = ""
code_ret = ""
code_cvt_list = []
code_args = "("
all_cargs = []
if v.isphantom and ismethod and not self.is_static:
code_args += "_self_"
# declare all the C function arguments,
# add necessary conversions from Python objects to code_cvt_list,
# form the function/method call,
# for the list of type mappings
instantiated_args = set()
for a in v.args:
if a.tp in ignored_arg_types:
defval = a.defval
if not defval and a.tp.endswith("*"):
defval = "0"
assert defval
if not code_args.endswith("("):
code_args += ", "
code_args += defval
all_cargs.append([[None, ""], ""])
continue
tp1 = tp = a.tp
amp = ""
defval0 = ""
if tp in pass_by_val_types:
tp = tp1 = tp[:-1]
amp = "&"
if tp.endswith("*"):
defval0 = "0"
tp1 = tp.replace("*", "_ptr")
tp_candidates = [a.tp, normalize_class_name(self.namespace + "." + a.tp)]
if any(tp in codegen.enums.keys() for tp in tp_candidates):
defval0 = "static_cast<%s>(%d)" % (a.tp, 0)
if tp in simple_argtype_mapping:
arg_type_info = simple_argtype_mapping[tp]
else:
if tp in all_classes:
tp_classinfo = all_classes[tp]
cname_of_value = tp_classinfo.cname if tp_classinfo.issimple else "Ptr<{}>".format(tp_classinfo.cname)
arg_type_info = ArgTypeInfo(cname_of_value, FormatStrings.object, defval0, True)
assert not (a.is_smart_ptr and tp_classinfo.issimple), "Can't pass 'simple' type as Ptr<>"
if not a.is_smart_ptr and not tp_classinfo.issimple:
assert amp == ''
amp = '*'
else:
# FIXIT: Ptr_ / vector_ / enums / nested types
arg_type_info = ArgTypeInfo(tp, FormatStrings.object, defval0, True)
parse_name = a.name
if a.py_inputarg and arg_type_info.strict_conversion:
parse_name = "pyobj_" + a.full_name.replace('.', '_')
code_decl += " PyObject* %s = NULL;\n" % (parse_name,)
if a.tp == 'char':
code_cvt_list.append("convert_to_char(%s, &%s, %s)" % (parse_name, a.full_name, a.crepr()))
else:
code_cvt_list.append("pyopencv_to_safe(%s, %s, %s)" % (parse_name, a.full_name, a.crepr()))
all_cargs.append([arg_type_info, parse_name])
# Argument is actually a part of the named arguments structure,
# but it is possible to mimic further processing like it is normal arg
if a.enclosing_arg:
a = a.enclosing_arg
arg_type_info = ArgTypeInfo(a.tp, FormatStrings.object,
default_value=a.defval,
strict_conversion=True)
# Skip further actions if enclosing argument is already instantiated
# by its another field
if a.name in instantiated_args:
continue
instantiated_args.add(a.name)
defval = a.defval
if not defval:
defval = arg_type_info.default_value
else:
if "UMat" in tp:
if "Mat" in defval and "UMat" not in defval:
defval = defval.replace("Mat", "UMat")
if "cuda::GpuMat" in tp:
if "Mat" in defval and "GpuMat" not in defval:
defval = defval.replace("Mat", "cuda::GpuMat")
if "cann::AscendMat" in tp:
if "Mat" in defval and "AscendMat" not in defval:
defval = defval.replace("Mat", "cann::AscendMat")
# "tp arg = tp();" is equivalent to "tp arg;" in the case of complex types
if defval == tp + "()" and arg_type_info.format_str == FormatStrings.object:
defval = ""
if a.outputarg and not a.inputarg:
defval = ""
if defval:
code_decl += " %s %s=%s;\n" % (arg_type_info.atype, a.name, defval)
else:
code_decl += " %s %s;\n" % (arg_type_info.atype, a.name)
if not code_args.endswith("("):
code_args += ", "
if a.isrvalueref:
code_args += amp + 'std::move(' + a.name + ')'
else:
code_args += amp + a.name
code_args += ")"
if self.isconstructor:
if selfinfo.issimple:
templ_prelude = gen_template_simple_call_constructor_prelude
templ = gen_template_simple_call_constructor
else:
templ_prelude = gen_template_call_constructor_prelude
templ = gen_template_call_constructor
code_prelude = templ_prelude.substitute(name=selfinfo.name, cname=selfinfo.cname)
code_fcall = templ.substitute(name=selfinfo.name, cname=selfinfo.cname, py_args=code_args)
if v.isphantom:
code_fcall = code_fcall.replace("new " + selfinfo.cname, self.cname.replace("::", "_"))
else:
code_prelude = ""
code_fcall = ""
if v.rettype:
code_decl += " " + v.rettype + " retval;\n"
code_fcall += "retval = "
if not v.isphantom and ismethod and not self.is_static:
code_fcall += "_self_->" + self.cname
else:
code_fcall += self.cname
code_fcall += code_args
if code_cvt_list:
code_cvt_list = [""] + code_cvt_list
# add info about return value, if any, to all_cargs. if there non-void return value,
# it is encoded in v.py_outlist as ("retval", -1) pair.
# As [-1] in Python accesses the last element of a list, we automatically handle the return value by
# adding the necessary info to the end of all_cargs list.
if v.rettype:
tp = v.rettype
tp1 = tp.replace("*", "_ptr")
default_info = ArgTypeInfo(tp, FormatStrings.object, "0")
arg_type_info = simple_argtype_mapping.get(tp, default_info)
all_cargs.append(arg_type_info)
if v.args and v.py_arglist:
# form the format spec for PyArg_ParseTupleAndKeywords
fmtspec = "".join([
get_type_format_string(all_cargs[argno][0])
for _, argno in v.py_arglist
])
if v.py_noptargs > 0:
fmtspec = fmtspec[:-v.py_noptargs] + "|" + fmtspec[-v.py_noptargs:]