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annotate Include/structmember.h @ 25838:8540887bcec6 2.2

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Backport of 2.183: Fix memory leak in add_subclass() found by NealN with valgrind.
author Guido van Rossum <guido@python.org>
date Fri, 18 Oct 2002 13:42:21 +0000
parents ef6f692c76e2
children c1eb668525e1
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1 #ifndef Py_STRUCTMEMBER_H
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2 #define Py_STRUCTMEMBER_H
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3 #ifdef __cplusplus
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4 extern "C" {
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5 #endif
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6
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7
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8 /* Interface to map C struct members to Python object attributes */
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9
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10 #ifdef HAVE_STDDEF_H
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11 #include <stddef.h> /* For offsetof */
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12 #endif
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13
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14 /* The offsetof() macro calculates the offset of a structure member
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15 in its structure. Unfortunately this cannot be written down
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16 portably, hence it is provided by a Standard C header file.
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17 For pre-Standard C compilers, here is a version that usually works
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18 (but watch out!): */
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19
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20 #ifndef offsetof
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21 #define offsetof(type, member) ( (int) & ((type*)0) -> member )
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22 #endif
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23
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24 /* An array of memberlist structures defines the name, type and offset
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25 of selected members of a C structure. These can be read by
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26 PyMember_Get() and set by PyMember_Set() (except if their READONLY flag
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27 is set). The array must be terminated with an entry whose name
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28 pointer is NULL. */
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29
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30 struct memberlist {
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31 /* Obsolete version, for binary backwards compatibility */
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32 char *name;
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33 int type;
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34 int offset;
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35 int flags;
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36 };
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37
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38 typedef struct PyMemberDef {
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39 /* Current version, use this */
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40 char *name;
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41 int type;
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42 int offset;
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43 int flags;
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44 char *doc;
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45 } PyMemberDef;
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46
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47 /* Types */
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48 #define T_SHORT 0
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49 #define T_INT 1
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50 #define T_LONG 2
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51 #define T_FLOAT 3
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52 #define T_DOUBLE 4
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53 #define T_STRING 5
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54 #define T_OBJECT 6
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55 /* XXX the ordering here is weird for binary compatibility */
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56 #define T_CHAR 7 /* 1-character string */
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57 #define T_BYTE 8 /* 8-bit signed int */
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58 /* unsigned variants: */
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59 #define T_UBYTE 9
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60 #define T_USHORT 10
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61 #define T_UINT 11
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62 #define T_ULONG 12
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63
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64 /* Added by Jack: strings contained in the structure */
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65 #define T_STRING_INPLACE 13
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66 #ifdef macintosh
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67 #define T_PSTRING 14 /* macintosh pascal-style counted string */
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68 #define T_PSTRING_INPLACE 15
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69 #endif /* macintosh */
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71 #define T_OBJECT_EX 16 /* Like T_OBJECT, but raises AttributeError
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72 when the value is NULL, instead of
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73 converting to None. */
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75 /* Flags */
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76 #define READONLY 1
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77 #define RO READONLY /* Shorthand */
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78 #define READ_RESTRICTED 2
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79 #define WRITE_RESTRICTED 4
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80 #define RESTRICTED (READ_RESTRICTED | WRITE_RESTRICTED)
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83 /* Obsolete API, for binary backwards compatibility */
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84 DL_IMPORT(PyObject *) PyMember_Get(char *, struct memberlist *, char *);
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85 DL_IMPORT(int) PyMember_Set(char *, struct memberlist *, char *, PyObject *);
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87 /* Current API, use this */
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88 DL_IMPORT(PyObject *) PyMember_GetOne(char *, struct PyMemberDef *);
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89 DL_IMPORT(int) PyMember_SetOne(char *, struct PyMemberDef *, PyObject *);
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91
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92 #ifdef __cplusplus
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93 }
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94 #endif
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95 #endif /* !Py_STRUCTMEMBER_H */