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 OHOS_IDL_AST_EXPRE_H
17 #define OHOS_IDL_AST_EXPRE_H
18 
19 #include "ast/ast_node.h"
20 #include "util/autoptr.h"
21 
22 namespace OHOS {
23 namespace Idl {
24 class ASTExpr : public ASTNode {
25 public:
EmitCode()26     inline std::string EmitCode()
27     {
28         return Dump("");
29     }
30 
31     bool isParenExpr = false;
32 };
33 
34 enum class UnaryOpKind {
35     PLUS,  // +
36     MINUS, // -
37     TILDE, // ~
38 };
39 
40 class ASTUnaryExpr : public ASTExpr {
41 public:
42     std::string Dump(const std::string &prefix) override;
43     std::string UnaryOpToString(UnaryOpKind op) const;
44 
45 public:
46     UnaryOpKind op_;
47     AutoPtr<ASTExpr> expr_;
48 };
49 
50 enum class BinaryOpKind {
51     MUL,    // *
52     DIV,    // /
53     MOD,    // %
54     ADD,    // +
55     SUB,    // -
56     LSHIFT, // <<
57     RSHIFT, // >>
58     AND,    // &
59     XOR,    // ^
60     OR,     // |
61 };
62 
63 class ASTBinaryExpr : public ASTExpr {
64 public:
65     std::string Dump(const std::string &prefix) override;
66     std::string BinaryOpToString(BinaryOpKind op) const;
67 
68 public:
69     BinaryOpKind op_;
70     AutoPtr<ASTExpr> lExpr_;
71     AutoPtr<ASTExpr> rExpr_;
72 };
73 
74 class ASTNumExpr : public ASTExpr {
75 public:
76     std::string Dump(const std::string &prefix) override;
77     std::string value_;
78 };
79 
80 /**
81  * @brief Defines the enumeration object structure in expression.
82  *
83  * This structure includes the enumeration information when using enum nesting identify in idl.
84  *
85  * @since 5.0
86  */
87 class ASTEnumExpr : public ASTExpr {
88 public:
89     std::string Dump(const std::string &prefix) override;
90     std::string value_;
91 };
92 } // namespace Idl
93 } // namespace OHOS
94 
95 #endif // OHOS_IDL_AST_EXPRE_H