|
| 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 */ |
0 commit comments