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c19c3a0961
Add a new _Py_RVALUE() macro to prevent using an expression as an l-value. Replace a "(void)" cast with the _Py_RVALUE() macro in the following macros: * PyCell_SET() * PyList_SET_ITEM() * PyTuple_SET_ITEM() * _PyGCHead_SET_FINALIZED() * _PyGCHead_SET_NEXT() * asdl_seq_SET() * asdl_seq_SET_UNTYPED() Add also parentheses around macro arguments in PyCell_SET() and PyTuple_SET_ITEM() macros.
34 lines
1.2 KiB
C
34 lines
1.2 KiB
C
#ifndef Py_CPYTHON_LISTOBJECT_H
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# error "this header file must not be included directly"
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#endif
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typedef struct {
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PyObject_VAR_HEAD
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/* Vector of pointers to list elements. list[0] is ob_item[0], etc. */
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PyObject **ob_item;
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/* ob_item contains space for 'allocated' elements. The number
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* currently in use is ob_size.
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* Invariants:
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* 0 <= ob_size <= allocated
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* len(list) == ob_size
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* ob_item == NULL implies ob_size == allocated == 0
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* list.sort() temporarily sets allocated to -1 to detect mutations.
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*
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* Items must normally not be NULL, except during construction when
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* the list is not yet visible outside the function that builds it.
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*/
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Py_ssize_t allocated;
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} PyListObject;
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PyAPI_FUNC(PyObject *) _PyList_Extend(PyListObject *, PyObject *);
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PyAPI_FUNC(void) _PyList_DebugMallocStats(FILE *out);
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/* Macro, trading safety for speed */
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/* Cast argument to PyListObject* type. */
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#define _PyList_CAST(op) (assert(PyList_Check(op)), (PyListObject *)(op))
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#define PyList_GET_ITEM(op, i) (_PyList_CAST(op)->ob_item[i])
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#define PyList_SET_ITEM(op, i, v) _Py_RVALUE(_PyList_CAST(op)->ob_item[i] = (v))
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#define PyList_GET_SIZE(op) Py_SIZE(_PyList_CAST(op))
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