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39 | #ifndef QV4COMPILERSCANFUNCTIONS_P_H |
40 | #define QV4COMPILERSCANFUNCTIONS_P_H |
41 | |
42 | // |
43 | // W A R N I N G |
44 | // ------------- |
45 | // |
46 | // This file is not part of the Qt API. It exists purely as an |
47 | // implementation detail. This header file may change from version to |
48 | // version without notice, or even be removed. |
49 | // |
50 | // We mean it. |
51 | // |
52 | |
53 | #include <private/qtqmlcompilerglobal_p.h> |
54 | #include <private/qqmljsastvisitor_p.h> |
55 | #include <private/qqmljsast_p.h> |
56 | #include <private/qqmljsengine_p.h> |
57 | #include <private/qv4compilercontext_p.h> |
58 | #include <private/qv4util_p.h> |
59 | #include <QtCore/QStringList> |
60 | #include <QStack> |
61 | #include <QScopedValueRollback> |
62 | |
63 | QT_BEGIN_NAMESPACE |
64 | |
65 | namespace QV4 { |
66 | |
67 | namespace Moth { |
68 | struct Instruction; |
69 | } |
70 | |
71 | namespace CompiledData { |
72 | struct CompilationUnit; |
73 | } |
74 | |
75 | namespace Compiler { |
76 | |
77 | class Codegen; |
78 | |
79 | class ScanFunctions: protected QQmlJS::AST::Visitor |
80 | { |
81 | typedef QScopedValueRollback<bool> TemporaryBoolAssignment; |
82 | public: |
83 | ScanFunctions(Codegen *cg, const QString &sourceCode, ContextType defaultProgramType); |
84 | void operator()(QQmlJS::AST::Node *node); |
85 | |
86 | // see comment at its call site in generateJSCodeForFunctionsAndBindings |
87 | // for why this function is necessary |
88 | void handleTopLevelFunctionFormals(QQmlJS::AST::FunctionExpression *node) { |
89 | if (node && node->formals) |
90 | node->formals->accept(visitor: this); |
91 | } |
92 | |
93 | void enterGlobalEnvironment(ContextType compilationMode); |
94 | void enterEnvironment(QQmlJS::AST::Node *node, ContextType compilationMode, |
95 | const QString &name); |
96 | void leaveEnvironment(); |
97 | |
98 | void enterQmlFunction(QQmlJS::AST::FunctionExpression *ast) |
99 | { enterFunction(ast, enterName: false); } |
100 | |
101 | protected: |
102 | using Visitor::visit; |
103 | using Visitor::endVisit; |
104 | |
105 | void checkDirectivePrologue(QQmlJS::AST::StatementList *ast); |
106 | |
107 | void checkName(const QStringRef &name, const QQmlJS::SourceLocation &loc); |
108 | |
109 | bool visit(QQmlJS::AST::Program *ast) override; |
110 | void endVisit(QQmlJS::AST::Program *) override; |
111 | |
112 | bool visit(QQmlJS::AST::ESModule *ast) override; |
113 | void endVisit(QQmlJS::AST::ESModule *) override; |
114 | |
115 | bool visit(QQmlJS::AST::ExportDeclaration *declaration) override; |
116 | bool visit(QQmlJS::AST::ImportDeclaration *declaration) override; |
117 | |
118 | bool visit(QQmlJS::AST::CallExpression *ast) override; |
119 | bool visit(QQmlJS::AST::PatternElement *ast) override; |
120 | bool visit(QQmlJS::AST::IdentifierExpression *ast) override; |
121 | bool visit(QQmlJS::AST::ExpressionStatement *ast) override; |
122 | bool visit(QQmlJS::AST::FunctionExpression *ast) override; |
123 | bool visit(QQmlJS::AST::TemplateLiteral *ast) override; |
124 | bool visit(QQmlJS::AST::SuperLiteral *) override; |
125 | bool visit(QQmlJS::AST::FieldMemberExpression *) override; |
126 | bool visit(QQmlJS::AST::ArrayPattern *) override; |
127 | |
128 | bool enterFunction(QQmlJS::AST::FunctionExpression *ast, bool enterName); |
129 | |
130 | void endVisit(QQmlJS::AST::FunctionExpression *) override; |
131 | |
132 | bool visit(QQmlJS::AST::ObjectPattern *ast) override; |
133 | |
134 | bool visit(QQmlJS::AST::PatternProperty *ast) override; |
135 | void endVisit(QQmlJS::AST::PatternProperty *) override; |
136 | |
137 | bool visit(QQmlJS::AST::FunctionDeclaration *ast) override; |
138 | void endVisit(QQmlJS::AST::FunctionDeclaration *) override; |
139 | |
140 | bool visit(QQmlJS::AST::ClassExpression *ast) override; |
141 | void endVisit(QQmlJS::AST::ClassExpression *) override; |
142 | |
143 | bool visit(QQmlJS::AST::ClassDeclaration *ast) override; |
144 | void endVisit(QQmlJS::AST::ClassDeclaration *) override; |
145 | |
146 | bool visit(QQmlJS::AST::DoWhileStatement *ast) override; |
147 | bool visit(QQmlJS::AST::ForStatement *ast) override; |
148 | void endVisit(QQmlJS::AST::ForStatement *) override; |
149 | bool visit(QQmlJS::AST::ForEachStatement *ast) override; |
150 | void endVisit(QQmlJS::AST::ForEachStatement *) override; |
151 | |
152 | bool visit(QQmlJS::AST::ThisExpression *ast) override; |
153 | |
154 | bool visit(QQmlJS::AST::Block *ast) override; |
155 | void endVisit(QQmlJS::AST::Block *ast) override; |
156 | |
157 | bool visit(QQmlJS::AST::CaseBlock *ast) override; |
158 | void endVisit(QQmlJS::AST::CaseBlock *ast) override; |
159 | |
160 | bool visit(QQmlJS::AST::Catch *ast) override; |
161 | void endVisit(QQmlJS::AST::Catch *ast) override; |
162 | |
163 | bool visit(QQmlJS::AST::WithStatement *ast) override; |
164 | void endVisit(QQmlJS::AST::WithStatement *ast) override; |
165 | |
166 | void throwRecursionDepthError() override; |
167 | |
168 | protected: |
169 | bool enterFunction(QQmlJS::AST::Node *ast, const QString &name, |
170 | QQmlJS::AST::FormalParameterList *formals, |
171 | QQmlJS::AST::StatementList *body, bool enterName); |
172 | |
173 | void calcEscapingVariables(); |
174 | // fields: |
175 | Codegen *_cg; |
176 | const QString _sourceCode; |
177 | Context *_context; |
178 | QStack<Context *> _contextStack; |
179 | |
180 | bool _allowFuncDecls; |
181 | ContextType defaultProgramType; |
182 | |
183 | private: |
184 | static constexpr QQmlJS::AST::Node *astNodeForGlobalEnvironment = nullptr; |
185 | }; |
186 | |
187 | } |
188 | |
189 | } |
190 | |
191 | QT_END_NAMESPACE |
192 | |
193 | #endif // QV4CODEGEN_P_H |
194 | |