getargs.c

/* New getargs implementation */

#include "Python.h"
#include "pycore_tuple.h"         // _PyTuple_ITEMS()
#include "pycore_pylifecycle.h"   // _PyArg_Fini

#include <ctype.h>
#include <float.h>


#ifdef __cplusplus
extern "C" {
#endif
int PyArg_Parse(PyObject *, const char *, ...);
int PyArg_ParseTuple(PyObject *, const char *, ...);
int PyArg_VaParse(PyObject *, const char *, va_list);

int PyArg_ParseTupleAndKeywords(PyObject *, PyObject *,
                                const char *, char **, ...);
int PyArg_VaParseTupleAndKeywords(PyObject *, PyObject *,
                                const char *, char **, va_list);

int _PyArg_ParseTupleAndKeywordsFast(PyObject *, PyObject *,
                                            struct _PyArg_Parser *, ...);
int _PyArg_VaParseTupleAndKeywordsFast(PyObject *, PyObject *,
                                            struct _PyArg_Parser *, va_list);

#ifdef HAVE_DECLSPEC_DLL
/* Export functions */
PyAPI_FUNC(int) _PyArg_Parse_SizeT(PyObject *, const char *, ...);
PyAPI_FUNC(int) _PyArg_ParseStack_SizeT(PyObject *const *args, Py_ssize_t nargs,
                                        const char *format, ...);
PyAPI_FUNC(int) _PyArg_ParseStackAndKeywords_SizeT(PyObject *const *args, Py_ssize_t nargs,
                                        PyObject *kwnames,
                                        struct _PyArg_Parser *parser, ...);
PyAPI_FUNC(int) _PyArg_ParseTuple_SizeT(PyObject *, const char *, ...);
PyAPI_FUNC(int) _PyArg_ParseTupleAndKeywords_SizeT(PyObject *, PyObject *,
                                                  const char *, char **, ...);
PyAPI_FUNC(PyObject *) _Py_BuildValue_SizeT(const char *, ...);
PyAPI_FUNC(int) _PyArg_VaParse_SizeT(PyObject *, const char *, va_list);
PyAPI_FUNC(int) _PyArg_VaParseTupleAndKeywords_SizeT(PyObject *, PyObject *,
                                              const char *, char **, va_list);

PyAPI_FUNC(int) _PyArg_ParseTupleAndKeywordsFast_SizeT(PyObject *, PyObject *,
                                            struct _PyArg_Parser *, ...);
PyAPI_FUNC(int) _PyArg_VaParseTupleAndKeywordsFast_SizeT(PyObject *, PyObject *,
                                            struct _PyArg_Parser *, va_list);
#endif

#define FLAG_COMPAT 1
#define FLAG_SIZE_T 2

typedef int (*destr_t)(PyObject *, void *);


/* Keep track of "objects" that have been allocated or initialized and
   which will need to be deallocated or cleaned up somehow if overall
   parsing fails.
*/
typedef struct {
  void *item;
  destr_t destructor;
} freelistentry_t;

typedef struct {
  freelistentry_t *entries;
  int first_available;
  int entries_malloced;
} freelist_t;