Include/structmember.h

   1 #ifndef Py_STRUCTMEMBER_H
   2 #define Py_STRUCTMEMBER_H
   3 #ifdef __cplusplus
   4 extern "C" {
   5 #endif
   6
   7
   8 /* Interface to map C struct members to Python object attributes */
   9
  10 #ifdef HAVE_STDDEF_H
  11 #include <stddef.h> /* For offsetof */
  12 #endif
  13
  14 /* The offsetof() macro calculates the offset of a structure member
  15    in its structure.  Unfortunately this cannot be written down
  16    portably, hence it is provided by a Standard C header file.
  17    For pre-Standard C compilers, here is a version that usually works
  18    (but watch out!): */
  19
  20 #ifndef offsetof
  21 #define offsetof(type, member) ( (int) & ((type*)0) -> member )
  22 #endif
  23
  24 /* An array of memberlist structures defines the name, type and offset
  25    of selected members of a C structure.  These can be read by
  26    PyMember_Get() and set by PyMember_Set() (except if their READONLY flag
  27    is set).  The array must be terminated with an entry whose name
  28    pointer is NULL. */
  29
  30 struct memberlist {
  31         char *name;
  32         int type;
  33         int offset;
  34         int readonly;
  35 };
  36
  37 /* Types */
  38 #define T_SHORT         0
  39 #define T_INT           1
  40 #define T_LONG          2
  41 #define T_FLOAT         3
  42 #define T_DOUBLE        4
  43 #define T_STRING        5
  44 #define T_OBJECT        6
  45 /* XXX the ordering here is weird for binary compatibility */
  46 #define T_CHAR          7       /* 1-character string */
  47 #define T_BYTE          8       /* 8-bit signed int */
  48 /* unsigned variants: */
  49 #define T_UBYTE         9
  50 #define T_USHORT        10
  51 #define T_UINT          11
  52 #define T_ULONG         12
  53
  54 /* Added by Jack: strings contained in the structure */
  55 #define T_STRING_INPLACE        13
  56 #ifdef macintosh
  57 #define T_PSTRING       14      /* macintosh pascal-style counted string */
  58 #define T_PSTRING_INPLACE       15
  59 #endif /* macintosh */
  60
  61 /* Readonly flag */
  62 #define READONLY        1
  63 #define RO              READONLY                /* Shorthand */
  64
  65 DL_IMPORT(PyObject *) PyMember_Get(char *, struct memberlist *, char *);
  66 DL_IMPORT(int) PyMember_Set(char *, struct memberlist *, char *, PyObject *);
  67
  68 #ifdef __cplusplus
  69 }
  70 #endif
  71 #endif /* !Py_STRUCTMEMBER_H */