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3 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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6 ** This file is part of the QtXmlPatterns module of the Qt Toolkit.
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** GNU Lesser General Public License Usage
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21 ** GNU General Public License Usage
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40 ****************************************************************************/
42 #include "qbuiltintypes_p.h"
43 #include "qcommonsequencetypes_p.h"
44 #include "qcommonvalues_p.h"
45 #include "qliteral_p.h"
46 #include "qschemanumeric_p.h"
48 #include "qdeepequalfn_p.h"
52 using namespace QPatternist;
54 bool DeepEqualFN::evaluateEBV(const DynamicContext::Ptr &context) const
56 const Item::Iterator::Ptr it1(m_operands.first()->evaluateSequence(context));
57 const Item::Iterator::Ptr it2(m_operands.at(1)->evaluateSequence(context));
61 const Item item1(it1->next());
62 const Item item2(it2->next());
78 else if(item1.isNode())
82 if(item1.asNode().isDeepEqual(item2.asNode()))
90 else if(item2.isNode())
92 /* We know that item1 is not a node due to the check above. */
95 else if(flexibleCompare(item1, item2, context))
97 else if(BuiltinTypes::numeric->itemMatches(item1) &&
98 item1.as<Numeric>()->isNaN() &&
99 item2.as<Numeric>()->isNaN())
102 /* Handle the specific NaN circumstances. item2 isn't checked whether it's of
103 * type numeric, since the AtomicComparator lookup would have failed if both weren't
112 Expression::Ptr DeepEqualFN::typeCheck(const StaticContext::Ptr &context,
113 const SequenceType::Ptr &reqType)
115 const Expression::Ptr me(FunctionCall::typeCheck(context, reqType));
116 const ItemType::Ptr t1(m_operands.first()->staticType()->itemType());
117 const ItemType::Ptr t2(m_operands.at(1)->staticType()->itemType());
118 /* TODO This can be much more improved, and the optimizations should be moved
121 if(*CommonSequenceTypes::Empty == *t1)
123 if(*CommonSequenceTypes::Empty == *t2)
124 return wrapLiteral(CommonValues::BooleanTrue, context, this);
128 else if(*CommonSequenceTypes::Empty == *t2)
130 if(*CommonSequenceTypes::Empty == *t1)
131 return wrapLiteral(CommonValues::BooleanTrue, context, this);
135 else if(BuiltinTypes::node->xdtTypeMatches(t1) &&
136 BuiltinTypes::node->xdtTypeMatches(t2))
137 return me; /* We're comparing nodes. */
138 else if(BuiltinTypes::xsAnyAtomicType->xdtTypeMatches(t1) &&
139 BuiltinTypes::xsAnyAtomicType->xdtTypeMatches(t2))
141 prepareComparison(fetchComparator(t1, t2, context));
146 if ((BuiltinTypes::node->xdtTypeMatches(t1) && BuiltinTypes::xsAnyAtomicType->xdtTypeMatches(t2))
147 || (BuiltinTypes::node->xdtTypeMatches(t2) && BuiltinTypes::xsAnyAtomicType->xdtTypeMatches(t1)))
149 /* One operand contains nodes and the other atomic values, or vice versa. They can never
152 return wrapLiteral(CommonValues::BooleanFalse, context, this);