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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QQMLJSASTVISITOR_P_H
#define QQMLJSASTVISITOR_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "qqmljsastfwd_p.h"
#include "qqmljsglobal_p.h"
QT_BEGIN_NAMESPACE
// as done in https://en.wikipedia.org/wiki/X_Macro
#define QQmlJSASTUiClassListToVisit \
X(UiProgram) \
X(UiHeaderItemList) \
X(UiPragmaValueList) \
X(UiPragma) \
X(UiImport) \
X(UiPublicMember) \
X(UiSourceElement) \
X(UiObjectDefinition) \
X(UiObjectInitializer) \
X(UiObjectBinding) \
X(UiScriptBinding) \
X(UiArrayBinding) \
X(UiParameterList) \
X(UiObjectMemberList) \
X(UiArrayMemberList) \
X(UiQualifiedId) \
X(UiEnumDeclaration) \
X(UiEnumMemberList) \
X(UiVersionSpecifier) \
X(UiInlineComponent) \
X(UiAnnotation) \
X(UiAnnotationList) \
X(UiRequired)
#define QQmlJSASTQQmlJSClassListToVisit \
X(TypeExpression) \
X(ThisExpression) \
X(IdentifierExpression) \
X(NullExpression) \
X(TrueLiteral) \
X(FalseLiteral) \
X(SuperLiteral) \
X(StringLiteral) \
X(TemplateLiteral) \
X(NumericLiteral) \
X(RegExpLiteral) \
X(ArrayPattern) \
X(ObjectPattern) \
X(PatternElementList) \
X(PatternPropertyList) \
X(PatternElement) \
X(PatternProperty) \
X(Elision) \
X(NestedExpression) \
X(IdentifierPropertyName) \
X(StringLiteralPropertyName) \
X(NumericLiteralPropertyName) \
X(ComputedPropertyName) \
X(ArrayMemberExpression) \
X(FieldMemberExpression) \
X(TaggedTemplate) \
X(NewMemberExpression) \
X(NewExpression) \
X(CallExpression) \
X(ArgumentList) \
X(PostIncrementExpression) \
X(PostDecrementExpression) \
X(DeleteExpression) \
X(VoidExpression) \
X(TypeOfExpression) \
X(PreIncrementExpression) \
X(PreDecrementExpression) \
X(UnaryPlusExpression) \
X(UnaryMinusExpression) \
X(TildeExpression) \
X(NotExpression) \
X(BinaryExpression) \
X(ConditionalExpression) \
X(Expression) \
X(Block) \
X(StatementList) \
X(VariableStatement) \
X(VariableDeclarationList) \
X(EmptyStatement) \
X(ExpressionStatement) \
X(IfStatement) \
X(DoWhileStatement) \
X(WhileStatement) \
X(ForStatement) \
X(ForEachStatement) \
X(ContinueStatement) \
X(BreakStatement) \
X(ReturnStatement) \
X(YieldExpression) \
X(WithStatement) \
X(SwitchStatement) \
X(CaseBlock) \
X(CaseClauses) \
X(CaseClause) \
X(DefaultClause) \
X(LabelledStatement) \
X(ThrowStatement) \
X(TryStatement) \
X(Catch) \
X(Finally) \
X(FunctionDeclaration) \
X(FunctionExpression) \
X(FormalParameterList) \
X(ClassExpression) \
X(ClassDeclaration) \
X(ClassElementList) \
X(Program) \
X(NameSpaceImport) \
X(ImportSpecifier) \
X(ImportsList) \
X(NamedImports) \
X(FromClause) \
X(ImportClause) \
X(ImportDeclaration) \
X(ExportSpecifier) \
X(ExportsList) \
X(ExportClause) \
X(ExportDeclaration) \
X(ESModule) \
X(DebuggerStatement) \
X(Type) \
X(TypeAnnotation)
#define QQmlJSASTClassListToVisit QQmlJSASTUiClassListToVisit QQmlJSASTQQmlJSClassListToVisit
namespace QQmlJS { namespace AST {
class QML_PARSER_EXPORT BaseVisitor
{
public:
class RecursionDepthCheck
{
Q_DISABLE_COPY(RecursionDepthCheck)
public:
RecursionDepthCheck(RecursionDepthCheck &&) = delete;
RecursionDepthCheck &operator=(RecursionDepthCheck &&) = delete;
RecursionDepthCheck(BaseVisitor *visitor) : m_visitor(visitor)
{
++(m_visitor->m_recursionDepth);
}
~RecursionDepthCheck()
{
--(m_visitor->m_recursionDepth);
}
bool operator()() const {
return m_visitor->m_recursionDepth < s_recursionLimit;
}
private:
static const quint16 s_recursionLimit = 4096;
BaseVisitor *m_visitor;
};
BaseVisitor(quint16 parentRecursionDepth = 0);
virtual ~BaseVisitor();
virtual bool preVisit(Node *) = 0;
virtual void postVisit(Node *) = 0;
#define X(name) \
virtual bool visit(name *) = 0; \
virtual void endVisit(name *) = 0;
QQmlJSASTClassListToVisit
#undef X
virtual void throwRecursionDepthError() = 0;
quint16 recursionDepth() const { return m_recursionDepth; }
protected:
quint16 m_recursionDepth = 0;
friend class RecursionDepthCheck;
};
class QML_PARSER_EXPORT Visitor: public BaseVisitor
{
public:
Visitor(quint16 parentRecursionDepth = 0);
bool preVisit(Node *) override { return true; }
void postVisit(Node *) override {}
#define X(name) \
bool visit(name *) override { return true; } \
void endVisit(name *) override { }
QQmlJSASTClassListToVisit
#undef X
};
class QML_PARSER_EXPORT JSVisitor : public BaseVisitor
{
public:
JSVisitor() = default;
bool preVisit(Node *) override { return true; }
void postVisit(Node *) override { }
#define X(name) \
bool visit(name *) override { return true; } \
void endVisit(name *) override { }
QQmlJSASTQQmlJSClassListToVisit
#undef X
#define X(name) \
bool visit(name *) override \
{ \
Q_ASSERT(false); \
return false; \
} \
void endVisit(name *) override { }
QQmlJSASTUiClassListToVisit
#undef X
}; // namespace AST
} } // namespace AST
QT_END_NAMESPACE
#endif // QQMLJSASTVISITOR_P_H
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