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