1 /*
2 * Copyright (c) 2024 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #ifndef META_INTERFACE_PROPERTY_MODIFIER_H
17 #define META_INTERFACE_PROPERTY_MODIFIER_H
18
19 #include <meta/base/interface_macros.h>
20 #include <meta/base/namespace.h>
21 #include <meta/base/types.h>
22 #include <meta/interface/intf_function.h>
23 #include <meta/interface/property/intf_property.h>
24
25 META_BEGIN_NAMESPACE()
26
27 enum EvaluationResult : uint8_t {
28 EVAL_CONTINUE = 0, /// Continue evaluation of the stack
29 EVAL_ERROR = 1, /// Error happened
30 EVAL_RETURN = 2, /// Stop stack evaluation and return value
31 EVAL_VALUE_CHANGED = 4, /// This modifier changed the value
32 };
33
operator |(EvaluationResult l, EvaluationResult r)34 inline EvaluationResult operator|(EvaluationResult l, EvaluationResult r)
35 {
36 return EvaluationResult(uint8_t(l) | uint8_t(r));
37 }
38
39 META_REGISTER_INTERFACE(IModifier, "4a6991b7-c410-4663-99d2-4ff00eb9a9e0")
40
41 class IModifier : public CORE_NS::IInterface {
42 META_INTERFACE(CORE_NS::IInterface, IModifier)
43 public:
44 virtual EvaluationResult ProcessOnGet(IAny& value) = 0;
45 virtual EvaluationResult ProcessOnSet(IAny& value, const IAny& current) = 0;
46 virtual bool IsCompatible(const TypeId& id) const = 0;
47 };
48
49 META_INTERFACE_TYPE(IModifier);
50
51 META_END_NAMESPACE()
52
53 #endif
54