#ifndef Py_INTERNAL_ASDL_H

#define Py_INTERNAL_ASDL_H

#ifdef __cplusplus

extern "C" {

#ifndef Py_BUILD_CORE

# error "this header requires Py_BUILD_CORE define"

#include "pycore_pyarena.h" // _PyArena_Malloc()

typedef PyObject * identifier;

typedef PyObject * string;

typedef PyObject * object;

typedef PyObject * constant;

#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)

# define asdl_seq_SET(S, I, V) _Py_RVALUE((S)->typed_elements[(I)] = (V))

#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)

# define asdl_seq_SET_UNTYPED(S, I, V) _Py_RVALUE((S)->elements[(I)] = (V))

#ifdef __cplusplus

}

#endif /* !Py_INTERNAL_ASDL_H */