1 /*
2 * Copyright (c) 2022 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 #include <cstring>
17 #include <iostream>
18 #include "script_manager.h"
19 #include "script/script_instruction.h"
20
21 using namespace std;
22 using namespace Uscript;
23
24 class UserInstruction1 : public UScriptInstruction {
25 public:
Execute(UScriptEnv & env,UScriptContext & context)26 int32_t Execute(UScriptEnv &env, UScriptContext &context) override
27 {
28 context.PushParam("user instruction1");
29 return USCRIPT_SUCCESS;
30 }
31 };
32
33 class UserInstruction2 : public UScriptInstruction {
34 public:
Execute(UScriptEnv & env,UScriptContext & context)35 int32_t Execute(UScriptEnv &env, UScriptContext &context) override
36 {
37 context.PushParam("user instruction2");
38 return USCRIPT_SUCCESS;
39 }
40 };
41
42 class UserInstructionAbort : public UScriptInstruction {
43 public:
Execute(UScriptEnv & env,UScriptContext & context)44 int32_t Execute(UScriptEnv &env, UScriptContext &context) override
45 {
46 context.PushParam("user instruction2");
47 return USCRIPT_SUCCESS;
48 }
49 };
50
51 class UserInstructionFactory : public UScriptInstructionFactory {
52 public:
CreateInstructionInstance(UScriptInstructionPtr & instr,const std::string & name)53 int32_t CreateInstructionInstance(UScriptInstructionPtr& instr, const std::string& name) override
54 {
55 if (name == "uInstruction1") {
56 instr = new (std::nothrow) UserInstruction1(); // 为何不加nothrow？？？
57 } else if (name == "uInstruction2") {
58 instr = new (std::nothrow) UserInstruction2();
59 } else if (name == "uInstruction3") {
60 instr = nullptr; // mock new failed scene
61 } else if (name == "abort") {
62 instr = new (std::nothrow) UserInstructionAbort(); // mock reserved error
63 } else {
64 return USCRIPT_NOTEXIST_INSTRUCTION;
65 }
66 return USCRIPT_SUCCESS;
67 }
UserInstructionFactory()68 UserInstructionFactory()
69 {
70 }
~UserInstructionFactory()71 ~UserInstructionFactory()
72 {
73 }
74 };
75
76 extern "C" {
GetInstructionFactory()77 __attribute__((visibility("default"))) Uscript::UScriptInstructionFactoryPtr GetInstructionFactory()
78 {
79 return new (std::nothrow) UserInstructionFactory;
80 }
81
ReleaseInstructionFactory(Uscript::UScriptInstructionFactoryPtr p)82 __attribute__((visibility("default"))) void ReleaseInstructionFactory(Uscript::UScriptInstructionFactoryPtr p)
83 {
84 delete p;
85 }
86 }