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
213
214
215
216
217
218
219
220
221
|
/****************************************************************************
**
** Copyright (C) 2009 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
* @short This file is included by qcastingplatform_p.h.
* If you need includes in this file, put them in CasttingPlatform.h, outside of the namespace.
*/
template <typename TSubClass, const bool issueError>
Item CastingPlatform<TSubClass, issueError>::castWithCaster(const Item &sourceValue,
const AtomicCaster::Ptr &caster,
const ReportContext::Ptr &context) const
{
Q_ASSERT(sourceValue);
Q_ASSERT(caster);
Q_ASSERT(context);
const Item retval(caster->castFrom(sourceValue, context));
if(issueError)
{
if(retval.template as<AtomicValue>()->hasError())
{
issueCastError(retval, sourceValue, context);
return Item();
}
else
return retval;
}
else
return retval;
}
template <typename TSubClass, const bool issueError>
Item CastingPlatform<TSubClass, issueError>::cast(const Item &sourceValue,
const ReportContext::Ptr &context) const
{
Q_ASSERT(sourceValue);
Q_ASSERT(context);
Q_ASSERT(targetType());
if(m_caster)
return castWithCaster(sourceValue, m_caster, context);
else
{
bool castImpossible = false;
const AtomicCaster::Ptr caster(locateCaster(sourceValue.type(), context, castImpossible, static_cast<const TSubClass *>(this), targetType()));
if(!issueError && castImpossible)
{
/* If we're supposed to issue an error(issueError) then this
* line will never be reached, because locateCaster() will in
* that case throw. */
return ValidationError::createError();
}
else
return castWithCaster(sourceValue, caster, context);
}
}
template <typename TSubClass, const bool issueError>
bool CastingPlatform<TSubClass, issueError>::prepareCasting(const ReportContext::Ptr &context,
const ItemType::Ptr &sourceType)
{
Q_ASSERT(sourceType);
Q_ASSERT(context);
if(*sourceType == *BuiltinTypes::xsAnyAtomicType ||
*sourceType == *BuiltinTypes::item ||
*sourceType == *CommonSequenceTypes::Empty ||
*sourceType == *BuiltinTypes::numeric)
return true; /* The type could not be narrowed better than xs:anyAtomicType
or numeric at compile time. We'll do lookup at runtime instead. */
bool castImpossible = false;
m_caster = locateCaster(sourceType, context, castImpossible, static_cast<const TSubClass *>(this), targetType());
return !castImpossible;
}
template <typename TSubClass, const bool issueError>
AtomicCaster::Ptr CastingPlatform<TSubClass, issueError>::locateCaster(const ItemType::Ptr &sourceType,
const ReportContext::Ptr &context,
bool &castImpossible,
const SourceLocationReflection *const location,
const ItemType::Ptr &targetType)
{
Q_ASSERT(sourceType);
Q_ASSERT(targetType);
const AtomicCasterLocator::Ptr locator(static_cast<AtomicType *>(
targetType.data())->casterLocator());
if(!locator)
{
if(issueError)
{
context->error(QtXmlPatterns::tr("No casting is possible with %1 as the target type.")
.arg(formatType(context->namePool(), targetType)),
ReportContext::XPTY0004, location);
}
else
castImpossible = true;
return AtomicCaster::Ptr();
}
const AtomicCaster::Ptr caster(static_cast<const AtomicType *>(sourceType.data())->accept(locator, location));
if(!caster)
{
if(issueError)
{
context->error(QtXmlPatterns::tr("It is not possible to cast from %1 to %2.")
.arg(formatType(context->namePool(), sourceType))
.arg(formatType(context->namePool(), targetType)),
ReportContext::XPTY0004, location);
}
else
castImpossible = true;
return AtomicCaster::Ptr();
}
return caster;
}
template <typename TSubClass, const bool issueError>
void CastingPlatform<TSubClass, issueError>::checkTargetType(const ReportContext::Ptr &context) const
{
Q_ASSERT(context);
const ItemType::Ptr tType(targetType());
Q_ASSERT(tType);
Q_ASSERT(tType->isAtomicType());
const AtomicType::Ptr asAtomic(tType);
/* This catches casting to xs:NOTATION and xs:anyAtomicType. */
if(asAtomic->isAbstract())
{
context->error(QtXmlPatterns::tr("Casting to %1 is not possible because it "
"is an abstract type, and can therefore never be instantiated.")
.arg(formatType(context->namePool(), tType)),
ReportContext::XPST0080,
static_cast<const TSubClass*>(this));
}
}
template <typename TSubClass, const bool issueError>
void CastingPlatform<TSubClass, issueError>::issueCastError(const Item &validationError,
const Item &sourceValue,
const ReportContext::Ptr &context) const
{
Q_ASSERT(validationError);
Q_ASSERT(context);
Q_ASSERT(validationError.isAtomicValue());
Q_ASSERT(validationError.template as<AtomicValue>()->hasError());
const ValidationError::Ptr err(validationError.template as<ValidationError>());
QString msg(err->message());
if(msg.isNull())
{
msg = QtXmlPatterns::tr("It's not possible to cast the value %1 of type %2 to %3")
.arg(formatData(sourceValue.stringValue()))
.arg(formatType(context->namePool(), sourceValue.type()))
.arg(formatType(context->namePool(), targetType()));
}
else
{
Q_ASSERT(!msg.isEmpty());
msg = QtXmlPatterns::tr("Failure when casting from %1 to %2: %3")
.arg(formatType(context->namePool(), sourceValue.type()))
.arg(formatType(context->namePool(), targetType()))
.arg(msg);
}
/* If m_errorCode is FORG0001, we assume our sub-classer doesn't have a
* special wish about error code, so then we use the error object's code.
*/
context->error(msg, m_errorCode == ReportContext::FORG0001 ? err->errorCode() : m_errorCode,
static_cast<const TSubClass*>(this));
}
|
