1 | // Copyright (C) 2016 The Qt Company Ltd. |
---|---|
2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
3 | |
4 | #ifndef QQMLJSASTVISITOR_P_H |
5 | #define QQMLJSASTVISITOR_P_H |
6 | |
7 | // |
8 | // W A R N I N G |
9 | // ------------- |
10 | // |
11 | // This file is not part of the Qt API. It exists purely as an |
12 | // implementation detail. This header file may change from version to |
13 | // version without notice, or even be removed. |
14 | // |
15 | // We mean it. |
16 | // |
17 | |
18 | #include "qqmljsastfwd_p.h" |
19 | #include "qqmljsglobal_p.h" |
20 | |
21 | QT_BEGIN_NAMESPACE |
22 | |
23 | // as done in https://en.wikipedia.org/wiki/X_Macro |
24 | |
25 | #define QQmlJSASTUiClassListToVisit \ |
26 | X(UiProgram) \ |
27 | X(UiHeaderItemList) \ |
28 | X(UiPragmaValueList) \ |
29 | X(UiPragma) \ |
30 | X(UiImport) \ |
31 | X(UiPublicMember) \ |
32 | X(UiSourceElement) \ |
33 | X(UiObjectDefinition) \ |
34 | X(UiObjectInitializer) \ |
35 | X(UiObjectBinding) \ |
36 | X(UiScriptBinding) \ |
37 | X(UiArrayBinding) \ |
38 | X(UiParameterList) \ |
39 | X(UiObjectMemberList) \ |
40 | X(UiArrayMemberList) \ |
41 | X(UiQualifiedId) \ |
42 | X(UiEnumDeclaration) \ |
43 | X(UiEnumMemberList) \ |
44 | X(UiVersionSpecifier) \ |
45 | X(UiInlineComponent) \ |
46 | X(UiAnnotation) \ |
47 | X(UiAnnotationList) \ |
48 | X(UiRequired) |
49 | |
50 | #define QQmlJSASTQQmlJSClassListToVisit \ |
51 | X(TypeExpression) \ |
52 | X(ThisExpression) \ |
53 | X(IdentifierExpression) \ |
54 | X(NullExpression) \ |
55 | X(TrueLiteral) \ |
56 | X(FalseLiteral) \ |
57 | X(SuperLiteral) \ |
58 | X(StringLiteral) \ |
59 | X(TemplateLiteral) \ |
60 | X(NumericLiteral) \ |
61 | X(RegExpLiteral) \ |
62 | X(ArrayPattern) \ |
63 | X(ObjectPattern) \ |
64 | X(PatternElementList) \ |
65 | X(PatternPropertyList) \ |
66 | X(PatternElement) \ |
67 | X(PatternProperty) \ |
68 | X(Elision) \ |
69 | X(NestedExpression) \ |
70 | X(IdentifierPropertyName) \ |
71 | X(StringLiteralPropertyName) \ |
72 | X(NumericLiteralPropertyName) \ |
73 | X(ComputedPropertyName) \ |
74 | X(ArrayMemberExpression) \ |
75 | X(FieldMemberExpression) \ |
76 | X(TaggedTemplate) \ |
77 | X(NewMemberExpression) \ |
78 | X(NewExpression) \ |
79 | X(CallExpression) \ |
80 | X(ArgumentList) \ |
81 | X(PostIncrementExpression) \ |
82 | X(PostDecrementExpression) \ |
83 | X(DeleteExpression) \ |
84 | X(VoidExpression) \ |
85 | X(TypeOfExpression) \ |
86 | X(PreIncrementExpression) \ |
87 | X(PreDecrementExpression) \ |
88 | X(UnaryPlusExpression) \ |
89 | X(UnaryMinusExpression) \ |
90 | X(TildeExpression) \ |
91 | X(NotExpression) \ |
92 | X(BinaryExpression) \ |
93 | X(ConditionalExpression) \ |
94 | X(Expression) \ |
95 | X(Block) \ |
96 | X(StatementList) \ |
97 | X(VariableStatement) \ |
98 | X(VariableDeclarationList) \ |
99 | X(EmptyStatement) \ |
100 | X(ExpressionStatement) \ |
101 | X(IfStatement) \ |
102 | X(DoWhileStatement) \ |
103 | X(WhileStatement) \ |
104 | X(ForStatement) \ |
105 | X(ForEachStatement) \ |
106 | X(ContinueStatement) \ |
107 | X(BreakStatement) \ |
108 | X(ReturnStatement) \ |
109 | X(YieldExpression) \ |
110 | X(WithStatement) \ |
111 | X(SwitchStatement) \ |
112 | X(CaseBlock) \ |
113 | X(CaseClauses) \ |
114 | X(CaseClause) \ |
115 | X(DefaultClause) \ |
116 | X(LabelledStatement) \ |
117 | X(ThrowStatement) \ |
118 | X(TryStatement) \ |
119 | X(Catch) \ |
120 | X(Finally) \ |
121 | X(FunctionDeclaration) \ |
122 | X(FunctionExpression) \ |
123 | X(FormalParameterList) \ |
124 | X(ClassExpression) \ |
125 | X(ClassDeclaration) \ |
126 | X(ClassElementList) \ |
127 | X(Program) \ |
128 | X(NameSpaceImport) \ |
129 | X(ImportSpecifier) \ |
130 | X(ImportsList) \ |
131 | X(NamedImports) \ |
132 | X(FromClause) \ |
133 | X(ImportClause) \ |
134 | X(ImportDeclaration) \ |
135 | X(ExportSpecifier) \ |
136 | X(ExportsList) \ |
137 | X(ExportClause) \ |
138 | X(ExportDeclaration) \ |
139 | X(ESModule) \ |
140 | X(DebuggerStatement) \ |
141 | X(Type) \ |
142 | X(TypeAnnotation) |
143 | |
144 | #define QQmlJSASTClassListToVisit QQmlJSASTUiClassListToVisit QQmlJSASTQQmlJSClassListToVisit |
145 | |
146 | namespace QQmlJS { namespace AST { |
147 | |
148 | class QML_PARSER_EXPORT BaseVisitor |
149 | { |
150 | public: |
151 | class RecursionDepthCheck |
152 | { |
153 | Q_DISABLE_COPY(RecursionDepthCheck) |
154 | public: |
155 | RecursionDepthCheck(RecursionDepthCheck &&) = delete; |
156 | RecursionDepthCheck &operator=(RecursionDepthCheck &&) = delete; |
157 | |
158 | RecursionDepthCheck(BaseVisitor *visitor) : m_visitor(visitor) |
159 | { |
160 | ++(m_visitor->m_recursionDepth); |
161 | } |
162 | |
163 | ~RecursionDepthCheck() |
164 | { |
165 | --(m_visitor->m_recursionDepth); |
166 | } |
167 | |
168 | bool operator()() const { |
169 | return m_visitor->m_recursionDepth < s_recursionLimit; |
170 | } |
171 | |
172 | private: |
173 | static const quint16 s_recursionLimit = 4096; |
174 | BaseVisitor *m_visitor; |
175 | }; |
176 | |
177 | BaseVisitor(quint16 parentRecursionDepth = 0); |
178 | virtual ~BaseVisitor(); |
179 | |
180 | virtual bool preVisit(Node *) = 0; |
181 | virtual void postVisit(Node *) = 0; |
182 | |
183 | #define X(name) \ |
184 | virtual bool visit(name *) = 0; \ |
185 | virtual void endVisit(name *) = 0; |
186 | QQmlJSASTClassListToVisit |
187 | #undef X |
188 | |
189 | virtual void throwRecursionDepthError() = 0; |
190 | |
191 | quint16 recursionDepth() const { return m_recursionDepth; } |
192 | |
193 | protected: |
194 | quint16 m_recursionDepth = 0; |
195 | friend class RecursionDepthCheck; |
196 | }; |
197 | |
198 | class QML_PARSER_EXPORT Visitor: public BaseVisitor |
199 | { |
200 | public: |
201 | Visitor(quint16 parentRecursionDepth = 0); |
202 | |
203 | bool preVisit(Node *) override { return true; } |
204 | void postVisit(Node *) override {} |
205 | |
206 | #define X(name) \ |
207 | bool visit(name *) override { return true; } \ |
208 | void endVisit(name *) override { } |
209 | QQmlJSASTClassListToVisit |
210 | #undef X |
211 | }; |
212 | |
213 | } } // namespace AST |
214 | |
215 | QT_END_NAMESPACE |
216 | |
217 | #endif // QQMLJSASTVISITOR_P_H |
218 |