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annotate Include/funcobject.h @ 80661:94de77bd0b4b 2.7

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Issue #16194: document imp.load_dynamic problems when read several extension modules from the same binary object file.
author Andrew Svetlov <andrew.svetlov@gmail.com>
date Thu, 29 Nov 2012 19:51:28 +0200
parents 26384b8180c7
children
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2 /* Function object interface */
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4 #ifndef Py_FUNCOBJECT_H
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5 #define Py_FUNCOBJECT_H
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6 #ifdef __cplusplus
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7 extern "C" {
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8 #endif
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10 /* Function objects and code objects should not be confused with each other:
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11 *
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12 * Function objects are created by the execution of the 'def' statement.
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13 * They reference a code object in their func_code attribute, which is a
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14 * purely syntactic object, i.e. nothing more than a compiled version of some
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15 * source code lines. There is one code object per source code "fragment",
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16 * but each code object can be referenced by zero or many function objects
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17 * depending only on how many times the 'def' statement in the source was
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18 * executed so far.
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19 */
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20
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21 typedef struct {
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22 PyObject_HEAD
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23 PyObject *func_code; /* A code object */
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24 PyObject *func_globals; /* A dictionary (other mappings won't do) */
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25 PyObject *func_defaults; /* NULL or a tuple */
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26 PyObject *func_closure; /* NULL or a tuple of cell objects */
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27 PyObject *func_doc; /* The __doc__ attribute, can be anything */
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28 PyObject *func_name; /* The __name__ attribute, a string object */
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29 PyObject *func_dict; /* The __dict__ attribute, a dict or NULL */
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30 PyObject *func_weakreflist; /* List of weak references */
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31 PyObject *func_module; /* The __module__ attribute, can be anything */
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32
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33 /* Invariant:
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34 * func_closure contains the bindings for func_code->co_freevars, so
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35 * PyTuple_Size(func_closure) == PyCode_GetNumFree(func_code)
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36 * (func_closure may be NULL if PyCode_GetNumFree(func_code) == 0).
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37 */
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38 } PyFunctionObject;
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40 PyAPI_DATA(PyTypeObject) PyFunction_Type;
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42 #define PyFunction_Check(op) (Py_TYPE(op) == &PyFunction_Type)
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44 PyAPI_FUNC(PyObject *) PyFunction_New(PyObject *, PyObject *);
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45 PyAPI_FUNC(PyObject *) PyFunction_GetCode(PyObject *);
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46 PyAPI_FUNC(PyObject *) PyFunction_GetGlobals(PyObject *);
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47 PyAPI_FUNC(PyObject *) PyFunction_GetModule(PyObject *);
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48 PyAPI_FUNC(PyObject *) PyFunction_GetDefaults(PyObject *);
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49 PyAPI_FUNC(int) PyFunction_SetDefaults(PyObject *, PyObject *);
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50 PyAPI_FUNC(PyObject *) PyFunction_GetClosure(PyObject *);
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51 PyAPI_FUNC(int) PyFunction_SetClosure(PyObject *, PyObject *);
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53 /* Macros for direct access to these values. Type checks are *not*
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54 done, so use with care. */
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55 #define PyFunction_GET_CODE(func) \
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56 (((PyFunctionObject *)func) -> func_code)
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57 #define PyFunction_GET_GLOBALS(func) \
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58 (((PyFunctionObject *)func) -> func_globals)
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59 #define PyFunction_GET_MODULE(func) \
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60 (((PyFunctionObject *)func) -> func_module)
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61 #define PyFunction_GET_DEFAULTS(func) \
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62 (((PyFunctionObject *)func) -> func_defaults)
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63 #define PyFunction_GET_CLOSURE(func) \
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64 (((PyFunctionObject *)func) -> func_closure)
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66 /* The classmethod and staticmethod types lives here, too */
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67 PyAPI_DATA(PyTypeObject) PyClassMethod_Type;
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68 PyAPI_DATA(PyTypeObject) PyStaticMethod_Type;
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70 PyAPI_FUNC(PyObject *) PyClassMethod_New(PyObject *);
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71 PyAPI_FUNC(PyObject *) PyStaticMethod_New(PyObject *);
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73 #ifdef __cplusplus
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74 }
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75 #endif
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76 #endif /* !Py_FUNCOBJECT_H */