source: trunk/src/xmlpatterns/parser/qmaintainingreader.cpp@ 439

Last change on this file since 439 was 2, checked in by Dmitry A. Kuminov, 16 years ago

Initially imported qt-all-opensource-src-4.5.1 from Trolltech.
File size: 11.8 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** Contact: Qt Software Information ([email protected])
5**
6** This file is part of the QtXmlPatterns module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial Usage
10** Licensees holding valid Qt Commercial licenses may use this file in
11** accordance with the Qt Commercial License Agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and Nokia.
14**
15** GNU Lesser General Public License Usage
16** Alternatively, this file may be used under the terms of the GNU Lesser
17** General Public License version 2.1 as published by the Free Software
18** Foundation and appearing in the file LICENSE.LGPL included in the
19** packaging of this file. Please review the following information to
20** ensure the GNU Lesser General Public License version 2.1 requirements
21** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
22**
23** In addition, as a special exception, Nokia gives you certain
24** additional rights. These rights are described in the Nokia Qt LGPL
25** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
26** package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
36** If you are unsure which license is appropriate for your use, please
37** contact the sales department at [email protected].
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42/**
43 * @file
44 * @short This file is included by qcastingplatform_p.h.
45 * If you need includes in this file, put them in CasttingPlatform.h,
46 * outside of the namespace.
47 */
48
49template<typename TokenLookupClass,
50 typename LookupKey>
51MaintainingReader<TokenLookupClass, LookupKey>::MaintainingReader(const typename ElementDescription<TokenLookupClass, LookupKey>::Hash &elementDescriptions,
52 const QSet<typename TokenLookupClass::NodeName> &standardAttributes,
53 const ReportContext::Ptr &context,
54 QIODevice *const queryDevice) : QXmlStreamReader(queryDevice)
55 , m_hasHandledStandardAttributes(false)
56 , m_context(context)
57 , m_elementDescriptions(elementDescriptions)
58 , m_standardAttributes(standardAttributes)
59{
60 Q_ASSERT(m_context);
61 Q_ASSERT(!m_elementDescriptions.isEmpty());
62
63 /* We start with stripping. */
64 m_stripWhitespace.push(true);
65}
66
67template<typename TokenLookupClass,
68 typename LookupKey>
69MaintainingReader<TokenLookupClass, LookupKey>::~MaintainingReader()
70{
71}
72
73template<typename TokenLookupClass,
74 typename LookupKey>
75QSourceLocation MaintainingReader<TokenLookupClass, LookupKey>::currentLocation() const
76{
77 return QSourceLocation(documentURI(),
78 lineNumber(),
79 columnNumber());
80}
81
82template<typename TokenLookupClass,
83 typename LookupKey>
84QXmlStreamReader::TokenType MaintainingReader<TokenLookupClass, LookupKey>::readNext()
85{
86 const TokenType retval = QXmlStreamReader::readNext();
87
88 switch(retval)
89 {
90 case StartElement:
91 {
92 m_currentElementName = TokenLookupClass::toToken(name());
93 m_currentAttributes = attributes();
94 m_hasHandledStandardAttributes = false;
95
96 if(!m_currentAttributes.hasAttribute(QLatin1String("xml:space")))
97 m_stripWhitespace.push(m_stripWhitespace.top());
98 break;
99 }
100 case EndElement:
101 m_currentElementName = TokenLookupClass::toToken(name());
102 m_stripWhitespace.pop();
103 break;
104 default:
105 break;
106 }
107
108 return retval;
109}
110
111template<typename TokenLookupClass,
112 typename LookupKey>
113bool MaintainingReader<TokenLookupClass, LookupKey>::isWhitespace() const
114{
115 return QXmlStreamReader::isWhitespace()
116 || XPathHelper::isWhitespaceOnly(text());
117}
118
119
120template<typename TokenLookupClass,
121 typename LookupKey>
122void MaintainingReader<TokenLookupClass, LookupKey>::error(const QString &message,
123 const ReportContext::ErrorCode code) const
124{
125 m_context->error(message, code, currentLocation());
126}
127
128template<typename TokenLookupClass,
129 typename LookupKey>
130void MaintainingReader<TokenLookupClass, LookupKey>::warning(const QString &message) const
131{
132 m_context->warning(message, currentLocation());
133}
134
135template<typename TokenLookupClass,
136 typename LookupKey>
137typename TokenLookupClass::NodeName MaintainingReader<TokenLookupClass, LookupKey>::currentElementName() const
138{
139 return m_currentElementName;
140}
141
142template<typename TokenLookupClass,
143 typename LookupKey>
144void MaintainingReader<TokenLookupClass, LookupKey>::validateElement(const LookupKey elementName) const
145{
146 Q_ASSERT(tokenType() == QXmlStreamReader::StartElement);
147
148 if(m_elementDescriptions.contains(elementName))
149 {
150 const ElementDescription<TokenLookupClass, LookupKey> &desc = m_elementDescriptions.value(elementName);
151 const int attCount = m_currentAttributes.count();
152
153 QSet<typename TokenLookupClass::NodeName> encounteredXSLTAtts;
154
155 for(int i = 0; i < attCount; ++i)
156 {
157 const QXmlStreamAttribute &attr = m_currentAttributes.at(i);
158 if(attr.namespaceUri().isEmpty())
159 {
160 const typename TokenLookupClass::NodeName attrName(TokenLookupClass::toToken(attr.name()));
161 encounteredXSLTAtts.insert(attrName);
162
163 if(!desc.requiredAttributes.contains(attrName) &&
164 !desc.optionalAttributes.contains(attrName) &&
165 !m_standardAttributes.contains(attrName) &&
166 !isAnyAttributeAllowed())
167 {
168 QString translationString;
169
170 QList<typename TokenLookupClass::NodeName> all(desc.requiredAttributes.toList() + desc.optionalAttributes.toList());
171 const int totalCount = all.count();
172 QStringList allowed;
173
174 for(int i = 0; i < totalCount; ++i)
175 allowed.append(formatKeyword(toString(all.at(i))));
176
177 /* Note, we can't run toString() on attrName, because we're in this branch,
178 * the token lookup doesn't have the string(!).*/
179 const QString stringedName(attr.name().toString());
180
181 if(totalCount == 0)
182 {
183 translationString = QtXmlPatterns::tr("Attribute %1 cannot appear on the element %2. Only the standard attributes can appear.")
184 .arg(formatKeyword(stringedName),
185 formatKeyword(name()));
186 }
187 else if(totalCount == 1)
188 {
189 translationString = QtXmlPatterns::tr("Attribute %1 cannot appear on the element %2. Only %3 is allowed, and the standard attributes.")
190 .arg(formatKeyword(stringedName),
191 formatKeyword(name()),
192 allowed.first());
193 }
194 else if(totalCount == 1)
195 {
196 /* Note, allowed has already had formatKeyword() applied. */
197 translationString = QtXmlPatterns::tr("Attribute %1 cannot appear on the element %2. Allowed is %3, %4, and the standard attributes.")
198 .arg(formatKeyword(stringedName),
199 formatKeyword(name()),
200 allowed.first(),
201 allowed.last());
202 }
203 else
204 {
205 /* Note, allowed has already had formatKeyword() applied. */
206 translationString = QtXmlPatterns::tr("Attribute %1 cannot appear on the element %2. Allowed is %3, and the standard attributes.")
207 .arg(formatKeyword(stringedName),
208 formatKeyword(name()),
209 allowed.join(QLatin1String(", ")));
210 }
211
212 m_context->error(translationString,
213 ReportContext::XTSE0090,
214 currentLocation());
215 }
216 }
217 else if(attr.namespaceUri() == namespaceUri())
218 {
219 m_context->error(QtXmlPatterns::tr("XSL-T attributes on XSL-T elements must be in the null namespace, not in the XSL-T namespace which %1 is.")
220 .arg(formatKeyword(attr.name())),
221 ReportContext::XTSE0090,
222 currentLocation());
223 }
224 /* Else, attributes in other namespaces are allowed, continue. */
225 }
226
227 const QSet<typename TokenLookupClass::NodeName> requiredButMissing(QSet<typename TokenLookupClass::NodeName>(desc.requiredAttributes).subtract(encounteredXSLTAtts));
228
229 if(!requiredButMissing.isEmpty())
230 {
231 error(QtXmlPatterns::tr("The attribute %1 must appear on element %2.")
232 .arg(formatKeyword(toString(*requiredButMissing.constBegin())),
233 formatKeyword(name())),
234 ReportContext::XTSE0010);
235 }
236 }
237 else
238 {
239 error(QtXmlPatterns::tr("The element with local name %1 does not exist in XSL-T.").arg(formatKeyword(name())),
240 ReportContext::XTSE0010);
241 }
242}
243
244template<typename TokenLookupClass,
245 typename LookupKey>
246bool MaintainingReader<TokenLookupClass, LookupKey>::hasAttribute(const QString &namespaceURI,
247 const QString &localName) const
248{
249 Q_ASSERT(tokenType() == QXmlStreamReader::StartElement);
250 return m_currentAttributes.hasAttribute(namespaceURI, localName);
251}
252
253template<typename TokenLookupClass,
254 typename LookupKey>
255bool MaintainingReader<TokenLookupClass, LookupKey>::hasAttribute(const QString &localName) const
256{
257 return hasAttribute(QString(), localName);
258}
259
260template<typename TokenLookupClass,
261 typename LookupKey>
262QString MaintainingReader<TokenLookupClass, LookupKey>::readAttribute(const QString &localName,
263 const QString &namespaceURI) const
264{
265 Q_ASSERT(tokenType() == QXmlStreamReader::StartElement);
266
267 Q_ASSERT_X(m_currentAttributes.hasAttribute(namespaceURI, localName),
268 Q_FUNC_INFO,
269 "Validation must be done before this function is called.");
270
271 return m_currentAttributes.value(namespaceURI, localName).toString();
272}
273
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