python (3.11.7)
1 #ifndef Py_INTERNAL_ASDL_H
2 #define Py_INTERNAL_ASDL_H
3 #ifdef __cplusplus
4 extern "C" {
5 #endif
6
7 #ifndef Py_BUILD_CORE
8 # error "this header requires Py_BUILD_CORE define"
9 #endif
10
11 #include "pycore_pyarena.h" // _PyArena_Malloc()
12
13 typedef PyObject * identifier;
14 typedef PyObject * string;
15 typedef PyObject * object;
16 typedef PyObject * constant;
17
18 /* It would be nice if the code generated by asdl_c.py was completely
19 independent of Python, but it is a goal the requires too much work
20 at this stage. So, for example, I'll represent identifiers as
21 interned Python strings.
22 */
23
24 #define _ASDL_SEQ_HEAD \
25 Py_ssize_t size; \
26 void **elements;
27
28 typedef struct {
29 _ASDL_SEQ_HEAD
30 } asdl_seq;
31
32 typedef struct {
33 _ASDL_SEQ_HEAD
34 void *typed_elements[1];
35 } asdl_generic_seq;
36
37 typedef struct {
38 _ASDL_SEQ_HEAD
39 PyObject *typed_elements[1];
40 } asdl_identifier_seq;
41
42 typedef struct {
43 _ASDL_SEQ_HEAD
44 int typed_elements[1];
45 } asdl_int_seq;
46
47 asdl_generic_seq *_Py_asdl_generic_seq_new(Py_ssize_t size, PyArena *arena);
48 asdl_identifier_seq *_Py_asdl_identifier_seq_new(Py_ssize_t size, PyArena *arena);
49 asdl_int_seq *_Py_asdl_int_seq_new(Py_ssize_t size, PyArena *arena);
50
51
52 #define GENERATE_ASDL_SEQ_CONSTRUCTOR(NAME, TYPE) \
53 asdl_ ## NAME ## _seq *_Py_asdl_ ## NAME ## _seq_new(Py_ssize_t size, PyArena *arena) \
54 { \
55 asdl_ ## NAME ## _seq *seq = NULL; \
56 size_t n; \
57 /* check size is sane */ \
58 if (size < 0 || \
59 (size && (((size_t)size - 1) > (SIZE_MAX / sizeof(void *))))) { \
60 PyErr_NoMemory(); \
61 return NULL; \
62 } \
63 n = (size ? (sizeof(TYPE *) * (size - 1)) : 0); \
64 /* check if size can be added safely */ \
65 if (n > SIZE_MAX - sizeof(asdl_ ## NAME ## _seq)) { \
66 PyErr_NoMemory(); \
67 return NULL; \
68 } \
69 n += sizeof(asdl_ ## NAME ## _seq); \
70 seq = (asdl_ ## NAME ## _seq *)_PyArena_Malloc(arena, n); \
71 if (!seq) { \
72 PyErr_NoMemory(); \
73 return NULL; \
74 } \
75 memset(seq, 0, n); \
76 seq->size = size; \
77 seq->elements = (void**)seq->typed_elements; \
78 return seq; \
79 }
80
81 #define asdl_seq_GET_UNTYPED(S, I) _Py_RVALUE((S)->elements[(I)])
82 #define asdl_seq_GET(S, I) _Py_RVALUE((S)->typed_elements[(I)])
83 #define asdl_seq_LEN(S) _Py_RVALUE(((S) == NULL ? 0 : (S)->size))
84
85 #ifdef Py_DEBUG
86 # define asdl_seq_SET(S, I, V) \
87 do { \
88 Py_ssize_t _asdl_i = (I); \
89 assert((S) != NULL); \
90 assert(0 <= _asdl_i && _asdl_i < (S)->size); \
91 (S)->typed_elements[_asdl_i] = (V); \
92 } while (0)
93 #else
94 # define asdl_seq_SET(S, I, V) _Py_RVALUE((S)->typed_elements[I] = (V))
95 #endif
96
97 #ifdef Py_DEBUG
98 # define asdl_seq_SET_UNTYPED(S, I, V) \
99 do { \
100 Py_ssize_t _asdl_i = (I); \
101 assert((S) != NULL); \
102 assert(0 <= _asdl_i && _asdl_i < (S)->size); \
103 (S)->elements[_asdl_i] = (V); \
104 } while (0)
105 #else
106 # define asdl_seq_SET_UNTYPED(S, I, V) _Py_RVALUE((S)->elements[I] = (V))
107 #endif
108
109 #ifdef __cplusplus
110 }
111 #endif
112 #endif /* !Py_INTERNAL_ASDL_H */
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