1#ifndef Py_INTERNAL_ASDL_H
2#define Py_INTERNAL_ASDL_H
3#ifdef __cplusplus
4extern "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
13typedef PyObject * identifier;
14typedef PyObject * string;
15typedef PyObject * object;
16typedef 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
28typedef struct {
29 _ASDL_SEQ_HEAD
30} asdl_seq;
31
32typedef struct {
33 _ASDL_SEQ_HEAD
34 void *typed_elements[1];
35} asdl_generic_seq;
36
37typedef struct {
38 _ASDL_SEQ_HEAD
39 PyObject *typed_elements[1];
40} asdl_identifier_seq;
41
42typedef struct {
43 _ASDL_SEQ_HEAD
44 int typed_elements[1];
45} asdl_int_seq;
46
47asdl_generic_seq *_Py_asdl_generic_seq_new(Py_ssize_t size, PyArena *arena);
48asdl_identifier_seq *_Py_asdl_identifier_seq_new(Py_ssize_t size, PyArena *arena);
49asdl_int_seq *_Py_asdl_int_seq_new(Py_ssize_t size, PyArena *arena);
50
51
52#define GENERATE_ASDL_SEQ_CONSTRUCTOR(NAME, TYPE) \
53asdl_ ## 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) (S)->elements[(I)]
82#define asdl_seq_GET(S, I) (S)->typed_elements[(I)]
83#define asdl_seq_LEN(S) ((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) (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) (S)->elements[I] = (V)
107#endif
108
109#ifdef __cplusplus
110}
111#endif
112#endif /* !Py_INTERNAL_ASDL_H */
113