diff options
Diffstat (limited to 'source/blender/python/intern/bpy_rna.c')
| -rw-r--r-- | source/blender/python/intern/bpy_rna.c | 99 |
1 files changed, 92 insertions, 7 deletions
diff --git a/source/blender/python/intern/bpy_rna.c b/source/blender/python/intern/bpy_rna.c index 14be9ceda94..56de0bfc18e 100644 --- a/source/blender/python/intern/bpy_rna.c +++ b/source/blender/python/intern/bpy_rna.c @@ -15,6 +15,7 @@ #include <float.h> /* FLT_MIN/MAX */ #include <stddef.h> +#include "RNA_path.h" #include "RNA_types.h" #include "BLI_bitmap.h" @@ -779,7 +780,7 @@ PyObject *pyrna_math_object_from_array(PointerRNA *ptr, PropertyRNA *prop) return ret; } -/* NOTE(campbell): Regarding comparison `__cmp__`: +/* NOTE(@campbellbarton): Regarding comparison `__cmp__`: * checking the 'ptr->data' matches works in almost all cases, * however there are a few RNA properties that are fake sub-structs and * share the pointer with the parent, in those cases this happens 'a.b == a' @@ -2212,6 +2213,26 @@ static int pyrna_prop_collection_bool(BPy_PropertyRNA *self) } \ (void)0 +/** + * \param result: The result of calling a subscription operation on a collection (never NULL). + */ +static int pyrna_prop_collection_subscript_is_valid_or_error(const PyObject *value) +{ + if (value != Py_None) { + BLI_assert(BPy_StructRNA_Check(value)); + const BPy_StructRNA *value_pyrna = (const BPy_StructRNA *)value; + if (UNLIKELY(value_pyrna->ptr.type == NULL)) { + /* It's important to use a `TypeError` as that is what's returned when `__getitem__` is + * called on an object that doesn't support item access. */ + PyErr_Format(PyExc_TypeError, + "'%.200s' object is not subscriptable (only iteration is supported)", + Py_TYPE(value)->tp_name); + return -1; + } + } + return 0; +} + /* Internal use only. */ static PyObject *pyrna_prop_collection_subscript_int(BPy_PropertyRNA *self, Py_ssize_t keynum) { @@ -2222,8 +2243,35 @@ static PyObject *pyrna_prop_collection_subscript_int(BPy_PropertyRNA *self, Py_s PYRNA_PROP_COLLECTION_ABS_INDEX(NULL); - if (RNA_property_collection_lookup_int(&self->ptr, self->prop, keynum_abs, &newptr)) { - return pyrna_struct_CreatePyObject(&newptr); + if (RNA_property_collection_lookup_int_has_fn(self->prop)) { + if (RNA_property_collection_lookup_int(&self->ptr, self->prop, keynum_abs, &newptr)) { + return pyrna_struct_CreatePyObject(&newptr); + } + } + else { + /* No callback defined, just iterate and find the nth item. */ + const int key = (int)keynum_abs; + PyObject *result = NULL; + bool found = false; + CollectionPropertyIterator iter; + RNA_property_collection_begin(&self->ptr, self->prop, &iter); + for (int i = 0; iter.valid; RNA_property_collection_next(&iter), i++) { + if (i == key) { + result = pyrna_struct_CreatePyObject(&iter.ptr); + found = true; + break; + } + } + /* It's important to end the iterator after `result` has been created + * so iterators may optionally invalidate items that were iterated over, see: T100286. */ + RNA_property_collection_end(&iter); + if (found) { + if (result && (pyrna_prop_collection_subscript_is_valid_or_error(result) == -1)) { + Py_DECREF(result); + result = NULL; /* The exception has been set. */ + } + return result; + } } const int len = RNA_property_collection_length(&self->ptr, self->prop); @@ -2305,8 +2353,45 @@ static PyObject *pyrna_prop_collection_subscript_str(BPy_PropertyRNA *self, cons PYRNA_PROP_CHECK_OBJ(self); - if (RNA_property_collection_lookup_string(&self->ptr, self->prop, keyname, &newptr)) { - return pyrna_struct_CreatePyObject(&newptr); + if (RNA_property_collection_lookup_string_has_fn(self->prop)) { + if (RNA_property_collection_lookup_string(&self->ptr, self->prop, keyname, &newptr)) { + return pyrna_struct_CreatePyObject(&newptr); + } + } + else { + /* No callback defined, just iterate and find the nth item. */ + const int keylen = strlen(keyname); + char name[256]; + int namelen; + PyObject *result = NULL; + bool found = false; + CollectionPropertyIterator iter; + RNA_property_collection_begin(&self->ptr, self->prop, &iter); + for (int i = 0; iter.valid; RNA_property_collection_next(&iter), i++) { + PropertyRNA *nameprop = RNA_struct_name_property(iter.ptr.type); + char *nameptr = RNA_property_string_get_alloc( + &iter.ptr, nameprop, name, sizeof(name), &namelen); + if ((keylen == namelen) && STREQ(nameptr, keyname)) { + found = true; + } + if ((char *)&name != nameptr) { + MEM_freeN(nameptr); + } + if (found) { + result = pyrna_struct_CreatePyObject(&iter.ptr); + break; + } + } + /* It's important to end the iterator after `result` has been created + * so iterators may optionally invalidate items that were iterated over, see: T100286. */ + RNA_property_collection_end(&iter); + if (found) { + if (result && (pyrna_prop_collection_subscript_is_valid_or_error(result) == -1)) { + Py_DECREF(result); + result = NULL; /* The exception has been set. */ + } + return result; + } } PyErr_Format(PyExc_KeyError, "bpy_prop_collection[key]: key \"%.200s\" not found", keyname); @@ -8253,7 +8338,7 @@ static int bpy_class_validate_recursive(PointerRNA *dummyptr, continue; } - /* TODO(campbell): this is used for classmethod's too, + /* TODO(@campbellbarton): this is used for classmethod's too, * even though class methods should have 'FUNC_USE_SELF_TYPE' set, see Operator.poll for eg. * Keep this as-is since it's working, but we should be using * 'FUNC_USE_SELF_TYPE' for many functions. */ @@ -8344,7 +8429,7 @@ static int bpy_class_validate_recursive(PointerRNA *dummyptr, continue; } - /* TODO(campbell): Use Python3.7x _PyObject_LookupAttr(), also in the macro below. */ + /* TODO(@campbellbarton): Use Python3.7x _PyObject_LookupAttr(), also in the macro below. */ identifier = RNA_property_identifier(prop); item = PyObject_GetAttrString(py_class, identifier); |