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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.
52 #ifndef Patternist_ExpressionVariableReference_H
53 #define Patternist_ExpressionVariableReference_H
55 #include <private/qvariabledeclaration_p.h>
56 #include <private/qvariablereference_p.h>
65 * @short A reference to a variable declared with <tt>declare variable</tt> or @c let.
67 * It's also used by variable bindings in @c case branches of the @c typeswitch
70 * This AST node is only used up until the typeCheck() stage. Therefore it
71 * has no functions for evaluation, such as evaluateSequence().
73 * @author Frans Englich <frans.englich@nokia.com>
74 * @ingroup Patternist_expressions
76 class ExpressionVariableReference : public VariableReference
79 ExpressionVariableReference(const VariableSlotID slot,
80 const VariableDeclaration::Ptr &varDecl);
82 virtual bool evaluateEBV(const DynamicContext::Ptr &context) const;
83 virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;
84 virtual Item::Iterator::Ptr evaluateSequence(const DynamicContext::Ptr &context) const;
86 virtual Expression::Ptr typeCheck(const StaticContext::Ptr &context,
87 const SequenceType::Ptr &reqType);
88 virtual SequenceType::Ptr staticType() const;
89 virtual ID id() const;
90 virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;
92 inline const Expression::Ptr &sourceExpression() const;
93 inline const VariableDeclaration::Ptr &variableDeclaration() const;
95 const VariableDeclaration::Ptr m_varDecl;
98 inline const Expression::Ptr &ExpressionVariableReference::sourceExpression() const
100 return m_varDecl->expression();
103 inline const VariableDeclaration::Ptr &ExpressionVariableReference::variableDeclaration() const