FilesExpand file tree

 parse-bytecode

/

objgetitemiter.c

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

76 lines (69 loc) · 2.75 KB

 parse-bytecode

/

objgetitemiter.c

Copy path

Top

File metadata and controls

• Code
• Blame

76 lines (69 loc) · 2.75 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

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

/*

* This file is part of the Micro Python project, http://micropython.org/

*

* The MIT License (MIT)

*

* Copyright (c) 2013, 2014 Damien P. George

*

* Permission is hereby granted, free of charge, to any person obtaining a copy

* of this software and associated documentation files (the "Software"), to deal

* in the Software without restriction, including without limitation the rights

* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

* copies of the Software, and to permit persons to whom the Software is

* furnished to do so, subject to the following conditions:

*

* The above copyright notice and this permission notice shall be included in

* all copies or substantial portions of the Software.

*

* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

* THE SOFTWARE.

*/

#include <stdlib.h>

#include "py/nlr.h"

#include "py/runtime.h"

// this is a wrapper object that turns something that has a __getitem__ method into an iterator

typedef struct _mp_obj_getitem_iter_t {

mp_obj_base_t base;

mp_obj_t args[3];

} mp_obj_getitem_iter_t;

STATIC mp_obj_t it_iternext(mp_obj_t self_in) {

mp_obj_getitem_iter_t *self = MP_OBJ_TO_PTR(self_in);

nlr_buf_t nlr;

if (nlr_push(&nlr) == 0) {

// try to get next item

mp_obj_t value = mp_call_method_n_kw(1, 0, self->args);

self->args[2] = MP_OBJ_NEW_SMALL_INT(MP_OBJ_SMALL_INT_VALUE(self->args[2]) + 1);

nlr_pop();

return value;

} else {

// an exception was raised

mp_obj_type_t *t = (mp_obj_type_t*)((mp_obj_base_t*)nlr.ret_val)->type;

if (t == &mp_type_StopIteration || t == &mp_type_IndexError) {

// return MP_OBJ_STOP_ITERATION instead of raising

return MP_OBJ_STOP_ITERATION;

} else {

// re-raise exception

nlr_jump(nlr.ret_val);

}

}

}

STATIC const mp_obj_type_t it_type = {

{ &mp_type_type },

.name = MP_QSTR_iterator,

.getiter = mp_identity,

.iternext = it_iternext,

};

// args are those returned from mp_load_method_maybe (ie either an attribute or a method)

mp_obj_t mp_obj_new_getitem_iter(mp_obj_t *args) {

mp_obj_getitem_iter_t *o = m_new_obj(mp_obj_getitem_iter_t);

o->base.type = &it_type;

o->args[0] = args[0];

o->args[1] = args[1];

o->args[2] = MP_OBJ_NEW_SMALL_INT(0);

return MP_OBJ_FROM_PTR(o);

}