src/xmlpatterns/parser/qmaintainingreader.cpp
changeset 0 1918ee327afb
child 4 3b1da2848fc7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xmlpatterns/parser/qmaintainingreader.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,274 @@
+/****************************************************************************
+**
+** 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 TokenLookupClass,
+         typename LookupKey>
+MaintainingReader<TokenLookupClass, LookupKey>::MaintainingReader(const typename ElementDescription<TokenLookupClass, LookupKey>::Hash &elementDescriptions,
+                                                                  const QSet<typename TokenLookupClass::NodeName> &standardAttributes,
+                                                                  const ReportContext::Ptr &context,
+                                                                  QIODevice *const queryDevice) : QXmlStreamReader(queryDevice)
+                                                                                                , m_hasHandledStandardAttributes(false)
+                                                                                                , m_context(context)
+                                                                                                , m_elementDescriptions(elementDescriptions)
+                                                                                                , m_standardAttributes(standardAttributes)
+{
+    Q_ASSERT(m_context);
+    Q_ASSERT(!m_elementDescriptions.isEmpty());
+
+    /* We start with stripping. */
+    m_stripWhitespace.push(true);
+}
+
+template<typename TokenLookupClass,
+         typename LookupKey>
+MaintainingReader<TokenLookupClass, LookupKey>::~MaintainingReader()
+{
+}
+
+template<typename TokenLookupClass,
+         typename LookupKey>
+QSourceLocation MaintainingReader<TokenLookupClass, LookupKey>::currentLocation() const
+{
+    return QSourceLocation(documentURI(),
+                           lineNumber(),
+                           columnNumber());
+}
+
+template<typename TokenLookupClass,
+         typename LookupKey>
+QXmlStreamReader::TokenType MaintainingReader<TokenLookupClass, LookupKey>::readNext()
+{
+    const TokenType retval = QXmlStreamReader::readNext();
+
+    switch(retval)
+    {
+        case StartElement:
+        {
+            m_currentElementName = TokenLookupClass::toToken(name());
+            m_currentAttributes = attributes();
+            m_hasHandledStandardAttributes = false;
+
+            if(!m_currentAttributes.hasAttribute(QLatin1String("xml:space")))
+                m_stripWhitespace.push(m_stripWhitespace.top());
+            break;
+        }
+        case EndElement:
+            m_currentElementName = TokenLookupClass::toToken(name());
+            m_stripWhitespace.pop();
+            break;
+        default:
+            break;
+    }
+
+    return retval;
+}
+
+template<typename TokenLookupClass,
+         typename LookupKey>
+bool MaintainingReader<TokenLookupClass, LookupKey>::isWhitespace() const
+{
+    return QXmlStreamReader::isWhitespace()
+           || XPathHelper::isWhitespaceOnly(text());
+}
+
+
+template<typename TokenLookupClass,
+         typename LookupKey>
+void MaintainingReader<TokenLookupClass, LookupKey>::error(const QString &message,
+                                                           const ReportContext::ErrorCode code) const
+{
+    m_context->error(message, code, currentLocation());
+}
+
+template<typename TokenLookupClass,
+         typename LookupKey>
+void MaintainingReader<TokenLookupClass, LookupKey>::warning(const QString &message) const
+{
+    m_context->warning(message, currentLocation());
+}
+
+template<typename TokenLookupClass,
+         typename LookupKey>
+typename TokenLookupClass::NodeName MaintainingReader<TokenLookupClass, LookupKey>::currentElementName() const
+{
+    return m_currentElementName;
+}
+
+template<typename TokenLookupClass,
+         typename LookupKey>
+void MaintainingReader<TokenLookupClass, LookupKey>::validateElement(const LookupKey elementName) const
+{
+    Q_ASSERT(tokenType() == QXmlStreamReader::StartElement);
+
+    if(m_elementDescriptions.contains(elementName))
+    {
+        // QHash::value breaks in Metrowerks Compiler
+        const ElementDescription<TokenLookupClass, LookupKey> &desc = *m_elementDescriptions.find(elementName);
+        const int attCount = m_currentAttributes.count();
+
+        QSet<typename TokenLookupClass::NodeName> encounteredXSLTAtts;
+
+        for(int i = 0; i < attCount; ++i)
+        {
+            const QXmlStreamAttribute &attr = m_currentAttributes.at(i);
+            if(attr.namespaceUri().isEmpty())
+            {
+                const typename TokenLookupClass::NodeName attrName(TokenLookupClass::toToken(attr.name()));
+                encounteredXSLTAtts.insert(attrName);
+
+                if(!desc.requiredAttributes.contains(attrName) &&
+                   !desc.optionalAttributes.contains(attrName) &&
+                   !m_standardAttributes.contains(attrName) &&
+                   !isAnyAttributeAllowed())
+                {
+                    QString translationString;
+
+                    QList<typename TokenLookupClass::NodeName> all(desc.requiredAttributes.toList() + desc.optionalAttributes.toList());
+                    const int totalCount = all.count();
+                    QStringList allowed;
+
+                    for(int i = 0; i < totalCount; ++i)
+                        allowed.append(QPatternist::formatKeyword(TokenLookupClass::toString(all.at(i))));
+
+                    /* Note, we can't run toString() on attrName, because we're in this branch,
+                     * the token lookup doesn't have the string(!).*/
+                    const QString stringedName(attr.name().toString());
+
+                    if(totalCount == 0)
+                    {
+                        translationString = QtXmlPatterns::tr("Attribute %1 cannot appear on the element %2. Only the standard attributes can appear.")
+                                            .arg(formatKeyword(stringedName),
+                                                 formatKeyword(name()));
+                    }
+                    else if(totalCount == 1)
+                    {
+                        translationString = QtXmlPatterns::tr("Attribute %1 cannot appear on the element %2. Only %3 is allowed, and the standard attributes.")
+                                            .arg(formatKeyword(stringedName),
+                                                 formatKeyword(name()),
+                                                 allowed.first());
+                    }
+                    else if(totalCount == 1)
+                    {
+                        /* Note, allowed has already had formatKeyword() applied. */
+                        translationString = QtXmlPatterns::tr("Attribute %1 cannot appear on the element %2. Allowed is %3, %4, and the standard attributes.")
+                                            .arg(formatKeyword(stringedName),
+                                                 formatKeyword(name()),
+                                                 allowed.first(),
+                                                 allowed.last());
+                    }
+                    else
+                    {
+                        /* Note, allowed has already had formatKeyword() applied. */
+                        translationString = QtXmlPatterns::tr("Attribute %1 cannot appear on the element %2. Allowed is %3, and the standard attributes.")
+                                            .arg(formatKeyword(stringedName),
+                                                 formatKeyword(name()),
+                                                 allowed.join(QLatin1String(", ")));
+                    }
+
+                    m_context->error(translationString,
+                                     ReportContext::XTSE0090,
+                                     currentLocation());
+                }
+            }
+            else if(attr.namespaceUri() == namespaceUri())
+            {
+                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.")
+                                                  .arg(formatKeyword(attr.name())),
+                                 ReportContext::XTSE0090,
+                                 currentLocation());
+            }
+            /* Else, attributes in other namespaces are allowed, continue. */
+        }
+
+        const QSet<typename TokenLookupClass::NodeName> requiredButMissing(QSet<typename TokenLookupClass::NodeName>(desc.requiredAttributes).subtract(encounteredXSLTAtts));
+
+        if(!requiredButMissing.isEmpty())
+        {
+            error(QtXmlPatterns::tr("The attribute %1 must appear on element %2.")
+                             .arg(QPatternist::formatKeyword(TokenLookupClass::toString(*requiredButMissing.constBegin())),
+                                  formatKeyword(name())),
+                  ReportContext::XTSE0010);
+        }
+    }
+    else
+    {
+        error(QtXmlPatterns::tr("The element with local name %1 does not exist in XSL-T.").arg(formatKeyword(name())),
+              ReportContext::XTSE0010);
+    }
+}
+
+template<typename TokenLookupClass,
+         typename LookupKey>
+bool MaintainingReader<TokenLookupClass, LookupKey>::hasAttribute(const QString &namespaceURI,
+                                 const QString &localName) const
+{
+    Q_ASSERT(tokenType() == QXmlStreamReader::StartElement);
+    return m_currentAttributes.hasAttribute(namespaceURI, localName);
+}
+
+template<typename TokenLookupClass,
+         typename LookupKey>
+bool MaintainingReader<TokenLookupClass, LookupKey>::hasAttribute(const QString &localName) const
+{
+    return hasAttribute(QString(), localName);
+}
+
+template<typename TokenLookupClass,
+         typename LookupKey>
+QString MaintainingReader<TokenLookupClass, LookupKey>::readAttribute(const QString &localName,
+                                                                      const QString &namespaceURI) const
+{
+    Q_ASSERT(tokenType() == QXmlStreamReader::StartElement);
+
+    Q_ASSERT_X(m_currentAttributes.hasAttribute(namespaceURI, localName),
+               Q_FUNC_INFO,
+               "Validation must be done before this function is called.");
+
+    return m_currentAttributes.value(namespaceURI, localName).toString();
+}
+