1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtXmlPatterns module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
/**
* @file qcomparingaggregator.cpp
* @short This file is included by qcomparingaggregator_p.h.
* If you need includes in this file, put them in qcomparingaggregator_p.h, outside of the namespace.
*/
template <AtomicComparator::Operator oper, AtomicComparator::ComparisonResult result>
inline Item
ComparingAggregator<oper, result>::applyNumericPromotion(const Item &old,
const Item &nev,
const Item &newVal) const
{
Q_ASSERT(old);
Q_ASSERT(nev);
Q_ASSERT(newVal);
const ItemType::Ptr to(old.type());
const ItemType::Ptr tn(nev.type());
if(!(BuiltinTypes::numeric->xdtTypeMatches(to) && BuiltinTypes::numeric->xdtTypeMatches(tn)))
return newVal; /* At least one of them isn't numeric. */
else if(BuiltinTypes::xsDouble->xdtTypeMatches(to) || BuiltinTypes::xsDouble->xdtTypeMatches(tn))
return toItem(Double::fromValue(newVal.as<Numeric>()->toDouble()));
else if(BuiltinTypes::xsFloat->xdtTypeMatches(to) || BuiltinTypes::xsFloat->xdtTypeMatches(tn))
return toItem(Float::fromValue(newVal.as<Numeric>()->toDouble()));
else if(BuiltinTypes::xsInteger->xdtTypeMatches(to) &&
BuiltinTypes::xsInteger->xdtTypeMatches(tn))
return newVal; /* Both must be xs:integer. */
else
return toItem(Decimal::fromValue(newVal.as<Numeric>()->toDecimal()));
}
template <AtomicComparator::Operator oper, AtomicComparator::ComparisonResult result>
Item
ComparingAggregator<oper, result>::evaluateSingleton(const DynamicContext::Ptr &context) const
{
const Item::Iterator::Ptr it(m_operands.first()->evaluateSequence(context));
Item largest;
while(true)
{
Item next(it->next());
if(!next)
{
return largest;
}
AtomicComparator::Ptr comp(comparator());
if(!comp)
{
ItemType::Ptr t1(next.type());
Q_ASSERT(t1);
if(BuiltinTypes::xsUntypedAtomic->xdtTypeMatches(t1))
{
next = cast(next, context);
t1 = BuiltinTypes::xsDouble;
}
if(!largest)
{
largest = next;
continue;
}
Q_ASSERT(largest);
comp = fetchComparator(largest.type(), t1, context);
Q_ASSERT(comp);
}
else if(!largest)
{
largest = next;
continue;
}
if(comp->compare(next, operatorID(), largest) == result)
{
largest = applyNumericPromotion(largest, next, next);
continue;
}
const ItemType::Ptr t(next.type());
if(BuiltinTypes::xsDouble->xdtTypeMatches(t) &&
next.as<Numeric>()->isNaN())
{
return CommonValues::DoubleNaN;
}
else if(BuiltinTypes::xsFloat->xdtTypeMatches(t) &&
next.as<Numeric>()->isNaN())
{
if(BuiltinTypes::xsDouble->xdtTypeMatches(largest.type()))
return CommonValues::DoubleNaN;
/* If we have a xs:double somewhere, we must promote the NaN value to xs:double,
* and we really should raise error on invalid value. */
largest = it->next();
while(largest)
{
const ItemType::Ptr tf(largest.type());
if(BuiltinTypes::xsDouble->xdtTypeMatches(tf))
return CommonValues::DoubleNaN;
else if(BuiltinTypes::xsUntypedAtomic->xdtTypeMatches(tf))
{
/* Attempt a convert, which will raise an error if it doesn't work out. */
cast(largest, context);
return CommonValues::DoubleNaN;
}
else if(!BuiltinTypes::numeric->xdtTypeMatches(tf))
{
fetchComparator(BuiltinTypes::xsFloat, tf, context);
}
else
largest = it->next();
};
return CommonValues::FloatNaN;
}
else
largest = applyNumericPromotion(largest, next, largest);
}
}
template <AtomicComparator::Operator oper, AtomicComparator::ComparisonResult result>
Expression::Ptr
ComparingAggregator<oper, result>::typeCheck(const StaticContext::Ptr &context,
const SequenceType::Ptr &reqType)
{
Q_ASSERT(oper == AtomicComparator::OperatorGreaterThan ||
oper == AtomicComparator::OperatorLessThan);
const Expression::Ptr me(FunctionCall::typeCheck(context, reqType));
ItemType::Ptr t1(m_operands.first()->staticType()->itemType());
if(*CommonSequenceTypes::Empty == *t1)
return EmptySequence::create(this, context);
else if(*BuiltinTypes::xsAnyAtomicType == *t1 ||
BuiltinTypes::numeric->xdtTypeMatches(t1))
return me;
else if(BuiltinTypes::xsUntypedAtomic->xdtTypeMatches(t1))
{
m_operands.replace(0, Expression::Ptr(new UntypedAtomicConverter(m_operands.first(),
BuiltinTypes::xsDouble)));
t1 = m_operands.first()->staticType()->itemType();
}
else if(!BuiltinTypes::xsString->xdtTypeMatches(t1) &&
!BuiltinTypes::xsAnyURI->xdtTypeMatches(t1) &&
!BuiltinTypes::xsDayTimeDuration->xdtTypeMatches(t1) &&
!BuiltinTypes::xsDate->xdtTypeMatches(t1) &&
!BuiltinTypes::xsTime->xdtTypeMatches(t1) &&
!BuiltinTypes::xsDateTime->xdtTypeMatches(t1) &&
!BuiltinTypes::xsYearMonthDuration->xdtTypeMatches(t1))
{
context->error(QtXmlPatterns::tr("The first argument to %1 cannot be of type %2.")
.arg(QPatternist::formatFunction(context->namePool(), signature()))
.arg(formatType(context->namePool(), m_operands.first()->staticType())),
ReportContext::FORG0006, this);
return me;
}
if(!m_operands.first()->staticType()->cardinality().allowsMany())
return m_operands.first();
// explicit scope needed in RVCT
ComparingAggregator<oper, result>::prepareComparison(fetchComparator(t1, t1, context));
return me;
}
|
