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#ifndef Py_INTERNAL_ASDL_H #define Py_INTERNAL_ASDL_H #ifdef __cplusplus extern "C" { #endif #ifndef Py_BUILD_CORE # error "this header requires Py_BUILD_CORE define" #endif #include "pycore_pyarena.h" // _PyArena_Malloc() typedef PyObject * identifier; typedef PyObject * string; typedef PyObject * object; typedef PyObject * constant; /* It would be nice if the code generated by asdl_c.py was completely independent of Python, but it is a goal the requires too much work at this stage. So, for example, I'll represent identifiers as interned Python strings. */ #define _ASDL_SEQ_HEAD \ Py_ssize_t size; \ void **elements; typedef struct { _ASDL_SEQ_HEAD } asdl_seq; typedef struct { _ASDL_SEQ_HEAD void *typed_elements[1]; } asdl_generic_seq; typedef struct { _ASDL_SEQ_HEAD PyObject *typed_elements[1]; } asdl_identifier_seq; typedef struct { _ASDL_SEQ_HEAD int typed_elements[1]; } asdl_int_seq; asdl_generic_seq *_Py_asdl_generic_seq_new(Py_ssize_t size, PyArena *arena); asdl_identifier_seq *_Py_asdl_identifier_seq_new(Py_ssize_t size, PyArena *arena); asdl_int_seq *_Py_asdl_int_seq_new(Py_ssize_t size, PyArena *arena); #define GENERATE_ASDL_SEQ_CONSTRUCTOR(NAME, TYPE) \ asdl_ ## NAME ## _seq *_Py_asdl_ ## NAME ## _seq_new(Py_ssize_t size, PyArena *arena) \ { \ asdl_ ## NAME ## _seq *seq = NULL; \ size_t n; \ /* check size is sane */ \ if (size < 0 || \ (size && (((size_t)size - 1) > (SIZE_MAX / sizeof(void *))))) { \ PyErr_NoMemory(); \ return NULL; \ } \ n = (size ? (sizeof(TYPE *) * (size - 1)) : 0); \ /* check if size can be added safely */ \ if (n > SIZE_MAX - sizeof(asdl_ ## NAME ## _seq)) { \ PyErr_NoMemory(); \ return NULL; \ } \ n += sizeof(asdl_ ## NAME ## _seq); \ seq = (asdl_ ## NAME ## _seq *)_PyArena_Malloc(arena, n); \ if (!seq) { \ PyErr_NoMemory(); \ return NULL; \ } \ memset(seq, 0, n); \ seq->size = size; \ seq->elements = (void**)seq->typed_elements; \ return seq; \ } #define asdl_seq_GET_UNTYPED(S, I) _Py_RVALUE((S)->elements[(I)]) #define asdl_seq_GET(S, I) _Py_RVALUE((S)->typed_elements[(I)]) #define asdl_seq_LEN(S) _Py_RVALUE(((S) == NULL ? 0 : (S)->size)) #ifdef Py_DEBUG # define asdl_seq_SET(S, I, V) \ do { \ Py_ssize_t _asdl_i = (I); \ assert((S) != NULL); \ assert(0 <= _asdl_i && _asdl_i < (S)->size); \ (S)->typed_elements[_asdl_i] = (V); \ } while (0) #else # define asdl_seq_SET(S, I, V) _Py_RVALUE((S)->typed_elements[I] = (V)) #endif #ifdef Py_DEBUG # define asdl_seq_SET_UNTYPED(S, I, V) \ do { \ Py_ssize_t _asdl_i = (I); \ assert((S) != NULL); \ assert(0 <= _asdl_i && _asdl_i < (S)->size); \ (S)->elements[_asdl_i] = (V); \ } while (0) #else # define asdl_seq_SET_UNTYPED(S, I, V) _Py_RVALUE((S)->elements[I] = (V)) #endif #ifdef __cplusplus } #endif #endif /* !Py_INTERNAL_ASDL_H */