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39
40#include "qcommonsequencetypes_p.h"
41#include "qtypechecker_p.h"
42
43#include "qtreatas_p.h"
44
45QT_BEGIN_NAMESPACE
46
47using namespace QPatternist;
48
49TreatAs::TreatAs(const Expression::Ptr &operand,
50 const SequenceType::Ptr &reqType) : SingleContainer(operand),
51 m_reqType(reqType)
52{
53 Q_ASSERT(reqType);
54}
55
56Expression::Ptr TreatAs::typeCheck(const StaticContext::Ptr &context,
57 const SequenceType::Ptr &reqType)
58{
59 Q_ASSERT(context);
60 Q_ASSERT(reqType);
61
62 /* Apply function conversion with the special error code XPDY0050. After that, we
63 * let the regular typeCheck() function be invoked on the operand before we rewrite
64 * to it. Hence is applyFunctionConversion() called twice, which doesn't break anything,
65 * but indeed is redundant. */
66 const Expression::Ptr treated(TypeChecker::applyFunctionConversion(operand: m_operand,
67 reqType: m_reqType,
68 context,
69 code: ReportContext::XPDY0050));
70 return treated->typeCheck(context, reqType);
71}
72
73ExpressionVisitorResult::Ptr TreatAs::accept(const ExpressionVisitor::Ptr &visitor) const
74{
75 return visitor->visit(this);
76}
77
78SequenceType::Ptr TreatAs::staticType() const
79{
80 return m_reqType;
81}
82
83SequenceType::List TreatAs::expectedOperandTypes() const
84{
85 SequenceType::List result;
86 result.append(t: CommonSequenceTypes::ZeroOrMoreItems);
87 return result;
88}
89
90QT_END_NAMESPACE
91

source code of qtxmlpatterns/src/xmlpatterns/expr/qtreatas.cpp