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py api: make all classes __init__ functions in a readonly state, except for operators.

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In bug [#27701], the panels __init__ function (which runs on every draw), was adding new rna properties.
This commit is contained in:
Campbell Barton
2011-06-21 08:09:42 +00:00
parent 418d2ce49e
commit a50aa13fac
1 changed files with 16 additions and 2 deletions
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18
source/blender/python/intern/bpy_rna.c
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@@ -6041,9 +6041,10 @@ static int bpy_class_call(bContext *C, PointerRNA *ptr, FunctionRNA *func, Param
PyGILState_STATE gilstate;
#ifdef USE_PEDANTIC_WRITE
const int is_operator= RNA_struct_is_a(ptr->type, &RNA_Operator);
const char *func_id= RNA_function_identifier(func);
/* testing, for correctness, not operator and not draw function */
const short is_readonly= strstr("draw", func_id) || /*strstr("render", func_id) ||*/ !RNA_struct_is_a(ptr->type, &RNA_Operator);
const short is_readonly= strstr("draw", func_id) || /*strstr("render", func_id) ||*/ !is_operator;
#endif
py_class= RNA_struct_py_type_get(ptr->type);
@@ -6099,6 +6100,11 @@ static int bpy_class_call(bContext *C, PointerRNA *ptr, FunctionRNA *func, Param
* Although this is annoying to have to impliment a part of pythons typeobject.c:type_call().
*/
if(py_class->tp_init) {
#ifdef USE_PEDANTIC_WRITE
const int prev_write= rna_disallow_writes;
rna_disallow_writes= is_operator ? FALSE : TRUE; /* only operators can write on __init__ */
#endif
/* true in most cases even when the class its self doesn't define an __init__ function. */
args= PyTuple_New(0);
if (py_class->tp_init(py_srna, args, NULL) < 0) {
@@ -6107,11 +6113,16 @@ static int bpy_class_call(bContext *C, PointerRNA *ptr, FunctionRNA *func, Param
/* err set below */
}
Py_DECREF(args);
#ifdef USE_PEDANTIC_WRITE
rna_disallow_writes= prev_write;
#endif
}
py_class_instance= py_srna;
#else
const int prev_write= rna_disallow_writes;
rna_disallow_writes= TRUE;
/* 'almost' all the time calling the class isn't needed.
* We could just do...
py_class_instance= py_srna;
@@ -6125,7 +6136,10 @@ static int bpy_class_call(bContext *C, PointerRNA *ptr, FunctionRNA *func, Param
py_class_instance= PyObject_Call(py_class, args, NULL);
Py_DECREF(args);
rna_disallow_writes= prev_write;
#endif
if(py_class_instance == NULL) {
err= -1; /* so the error is not overridden below */
}