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| ** Copyright (C) 2016 The Qt Company Ltd. |
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| ** This file is part of the QtXmlPatterns module of the Qt Toolkit. |
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| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
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| ****************************************************************************/ |
| |
| // |
| // 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. |
| // |
| |
| /** |
| * @file |
| * @short This file is included by qcomparisonplatform_p.h. |
| * If you need includes in this file, put them in qcomparisonplatform_p.h, outside of the namespace. |
| */ |
| |
| template <typename TSubClass, bool issueError, |
| AtomicComparator::ComparisonType comparisonType, ReportContext::ErrorCode errorCode> |
| bool ComparisonPlatform<TSubClass, issueError, comparisonType, errorCode>:: |
| flexibleCompare(const Item &it1, |
| const Item &it2, |
| const DynamicContext::Ptr &context) const |
| { |
| if(m_comparator) |
| /* The comparator was located at compile time. */ |
| return compare(it1, it2, m_comparator, operatorID()); |
| else |
| { |
| const AtomicComparator::Ptr cp(fetchComparator(it1.type(), |
| it2.type(), |
| context)); |
| |
| return cp ? compare(it1, it2, cp, operatorID()) : false; |
| } |
| } |
| |
| template <typename TSubClass, bool issueError, |
| AtomicComparator::ComparisonType comparisonType, ReportContext::ErrorCode errorCode> |
| AtomicComparator::ComparisonResult |
| ComparisonPlatform<TSubClass, issueError, comparisonType, errorCode>:: |
| detailedFlexibleCompare(const Item &it1, |
| const Item &it2, |
| const DynamicContext::Ptr &context) const |
| { |
| AtomicComparator::Ptr comp; |
| |
| if(m_comparator) |
| comp = m_comparator; |
| else |
| { |
| comp = fetchComparator(it1.type(), |
| it2.type(), |
| context); |
| } |
| |
| Q_ASSERT_X(operatorID() == AtomicComparator::OperatorLessThanNaNLeast || operatorID() == AtomicComparator::OperatorLessThanNaNGreatest, |
| Q_FUNC_INFO, "Only OperatorLessThan is currently supported for this function."); |
| return comp->compare(it1, operatorID(), it2); |
| } |
| |
| template <typename TSubClass, bool issueError, |
| AtomicComparator::ComparisonType comparisonType, ReportContext::ErrorCode errorCode> |
| bool ComparisonPlatform<TSubClass, issueError, comparisonType, errorCode>:: |
| compare(const Item &oand1, |
| const Item &oand2, |
| const AtomicComparator::Ptr &comp, |
| const AtomicComparator::Operator op) const |
| { |
| Q_ASSERT(oand1); |
| Q_ASSERT(oand2); |
| Q_ASSERT(comp); |
| |
| switch(op) |
| { |
| case AtomicComparator::OperatorEqual: |
| return comp->equals(oand1, oand2); |
| case AtomicComparator::OperatorNotEqual: |
| return !comp->equals(oand1, oand2); |
| case AtomicComparator::OperatorLessThanNaNLeast: |
| case AtomicComparator::OperatorLessThanNaNGreatest: |
| case AtomicComparator::OperatorLessThan: |
| return comp->compare(oand1, op, oand2) == AtomicComparator::LessThan; |
| case AtomicComparator::OperatorGreaterThan: |
| return comp->compare(oand1, op, oand2) == AtomicComparator::GreaterThan; |
| case AtomicComparator::OperatorLessOrEqual: |
| { |
| const AtomicComparator::ComparisonResult ret = comp->compare(oand1, op, oand2); |
| return ret == AtomicComparator::LessThan || ret == AtomicComparator::Equal; |
| } |
| case(AtomicComparator::OperatorGreaterOrEqual): |
| { |
| const AtomicComparator::ComparisonResult ret = comp->compare(oand1, op, oand2); |
| return ret == AtomicComparator::GreaterThan || ret == AtomicComparator::Equal; |
| } |
| } |
| |
| /* GCC unbarfer, this line should never be reached. */ |
| Q_ASSERT(false); |
| return false; |
| } |
| |
| template <typename TSubClass, bool issueError, |
| AtomicComparator::ComparisonType comparisonType, ReportContext::ErrorCode errorCode> |
| AtomicComparator::Ptr ComparisonPlatform<TSubClass, issueError, comparisonType, errorCode>:: |
| fetchComparator(const ItemType::Ptr &t1, |
| const ItemType::Ptr &t2, |
| const ReportContext::Ptr &context) const |
| { |
| Q_ASSERT(t1); |
| Q_ASSERT(t2); |
| |
| if(*BuiltinTypes::xsAnyAtomicType == *t1 || |
| *BuiltinTypes::xsAnyAtomicType == *t2 || |
| *BuiltinTypes::item == *t1 || |
| *BuiltinTypes::item == *t2 || |
| *BuiltinTypes::numeric == *t1 || |
| *BuiltinTypes::numeric == *t2 || |
| *CommonSequenceTypes::Empty == *t1 || |
| *CommonSequenceTypes::Empty == *t2) |
| { |
| /* The static type of(at least) one of the operands could not |
| * be narrowed further, so we do the operator |
| * lookup at runtime. |
| */ |
| return AtomicComparator::Ptr(); |
| } |
| |
| const AtomicComparatorLocator::Ptr locator |
| (static_cast<const AtomicType *>(t1.data())->comparatorLocator()); |
| |
| if(!locator) |
| { |
| if(issueError) |
| { |
| context->error(QtXmlPatterns::tr("No comparisons can be done involving the type %1.") |
| .arg(formatType(context->namePool(), t1)), |
| errorCode, static_cast<const TSubClass *>(this)->actualReflection()); |
| } |
| return AtomicComparator::Ptr(); |
| } |
| |
| const AtomicComparator::Ptr comp(static_cast<const AtomicType *>(t2.data())->accept(locator, operatorID(), |
| static_cast<const TSubClass *>(this)->actualReflection())); |
| |
| if(comp) |
| return comp; |
| else if(issueError) |
| { |
| context->error(QtXmlPatterns::tr("Operator %1 is not available between atomic values of type %2 and %3.") |
| .arg(formatKeyword(AtomicComparator::displayName(operatorID(), |
| comparisonType)), |
| formatType(context->namePool(), t1), |
| formatType(context->namePool(), t2)), |
| errorCode, static_cast<const TSubClass *>(this)->actualReflection()); |
| } |
| |
| return AtomicComparator::Ptr(); |
| } |
| |
| template <typename TSubClass, bool issueError, |
| AtomicComparator::ComparisonType comparisonType, ReportContext::ErrorCode errorCode> |
| void ComparisonPlatform<TSubClass, issueError, comparisonType, errorCode>:: |
| prepareComparison(const AtomicComparator::Ptr &c) |
| { |
| m_comparator = c; |
| } |
| |
