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     7 ** This file is part of the QtXmlPatterns module of the Qt Toolkit.

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    41 

    42 #include "qcommonsequencetypes_p.h"

    43 #include "qtypechecker_p.h"

    44 

    45 #include "qtreatas_p.h"

    46 

    47 QT_BEGIN_NAMESPACE

    48 

    49 using namespace QPatternist;

    50 

    51 TreatAs::TreatAs(const Expression::Ptr &operand,

    52                  const SequenceType::Ptr &reqType) : SingleContainer(operand),

    53                                                      m_reqType(reqType)

    54 {

    55     Q_ASSERT(reqType);

    56 }

    57 

    58 Expression::Ptr TreatAs::typeCheck(const StaticContext::Ptr &context,

    59                                    const SequenceType::Ptr &reqType)

    60 {

    61     Q_ASSERT(context);

    62     Q_ASSERT(reqType);

    63 

    64     /* Apply function conversion with the special error code XPDY0050. After that, we

    65      * let the regular typeCheck() function be invoked on the operand before we rewrite

    66      * to it. Hence is applyFunctionConversion() called twice, which doesn't break anything,

    67      * but indeed is redundant. */

    68     const Expression::Ptr treated(TypeChecker::applyFunctionConversion(m_operand,

    69                                                                        m_reqType,

    70                                                                        context,

    71                                                                        ReportContext::XPDY0050));

    72     return treated->typeCheck(context, reqType);

    73 }

    74 

    75 ExpressionVisitorResult::Ptr TreatAs::accept(const ExpressionVisitor::Ptr &visitor) const

    76 {

    77     return visitor->visit(this);

    78 }

    79 

    80 SequenceType::Ptr TreatAs::staticType() const

    81 {

    82     return m_reqType;

    83 }

    84 

    85 SequenceType::List TreatAs::expectedOperandTypes() const

    86 {

    87     SequenceType::List result;

    88     result.append(CommonSequenceTypes::ZeroOrMoreItems);

    89     return result;

    90 }

    91 

    92 QT_END_NAMESPACE