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/****************************************************************************
**
** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtXmlPatterns 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 either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
#ifndef Patternist_XsdSchemaHelper_H
#define Patternist_XsdSchemaHelper_H
#include "qcomparisonfactory_p.h"
#include "qschematype_p.h"
#include "qxsdattributegroup_p.h"
#include "qxsdelement_p.h"
#include "qxsdparticle_p.h"
#include "qxsdschemacontext_p.h"
#include "qxsdwildcard_p.h"
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
namespace QPatternist
{
/**
* @short Contains helper methods that are used by XsdSchemaParser, XsdSchemaResolver and XsdSchemaChecker.
*
* @ingroup Patternist_schema
* @author Tobias Koenig <tobias.koenig@trolltech.com>
*/
class XsdSchemaHelper
{
public:
/**
* Checks whether the given @p particle is emptiable as defined by the
* algorithm in the schema spec.
*/
static bool isParticleEmptiable(const XsdParticle::Ptr &particle);
/**
* Checks whether the given @p nameSpace is allowed by the given namespace @p constraint.
*/
static bool wildcardAllowsNamespaceName(const QString &nameSpace,
const XsdWildcard::NamespaceConstraint::Ptr &constraint);
/**
* Checks whether the given @p name is allowed by the namespace constraint of the given @p wildcard.
*/
static bool wildcardAllowsExpandedName(const QXmlName &name,
const XsdWildcard::Ptr &wildcard,
const NamePool::Ptr &namePool);
/**
* Checks whether the @p wildcard is a subset of @p otherWildcard.
*/
static bool isWildcardSubset(const XsdWildcard::Ptr &wildcard, const XsdWildcard::Ptr &otherWildcard);
/**
* Returns the union of the given @p wildcard and @p otherWildcard.
*/
static XsdWildcard::Ptr wildcardUnion(const XsdWildcard::Ptr &wildcard, const XsdWildcard::Ptr &otherWildcard);
/**
* Returns the intersection of the given @p wildcard and @p otherWildcard.
*/
static XsdWildcard::Ptr wildcardIntersection(const XsdWildcard::Ptr &wildcard,
const XsdWildcard::Ptr &otherWildcard);
/**
* Returns whether the given @p type is validly substitutable for an @p otherType
* under the given @p constraints.
*/
static bool isValidlySubstitutable(const SchemaType::Ptr &type,
const SchemaType::Ptr &otherType,
const SchemaType::DerivationConstraints &constraints);
/**
* Returns whether the simple @p derivedType can be derived from the simple @p baseType
* under the given @p constraints.
*/
static bool isSimpleDerivationOk(const SchemaType::Ptr &derivedType,
const SchemaType::Ptr &baseType,
const SchemaType::DerivationConstraints &constraints);
/**
* Returns whether the complex @p derivedType can be derived from the complex @p baseType
* under the given @p constraints.
*/
static bool isComplexDerivationOk(const SchemaType::Ptr &derivedType,
const SchemaType::Ptr &baseType,
const SchemaType::DerivationConstraints &constraints);
/**
* This method takes the two string based operands @p operand1 and @p operand2 and converts them to instances of type @p type.
* If the conversion fails, @c false is returned, otherwise the instances are compared by the given operator @p op and the
* result of the comparison is returned.
*/
static bool constructAndCompare(const DerivedString<TypeString>::Ptr &operand1,
const AtomicComparator::Operator op,
const DerivedString<TypeString>::Ptr &operand2,
const SchemaType::Ptr &type,
const ReportContext::Ptr &context,
const SourceLocationReflection *const sourceLocationReflection);
/**
* Returns whether the process content property of the @p derivedWildcard is valid
* according to the process content property of its @p baseWildcard.
*/
static bool checkWildcardProcessContents(const XsdWildcard::Ptr &baseWildcard,
const XsdWildcard::Ptr &derivedWildcard);
/**
* Checks whether @[ member is a member of the substitution group with the given @p head.
*/
static bool foundSubstitutionGroupTransitive(const XsdElement::Ptr &head,
const XsdElement::Ptr &member,
QSet<XsdElement::Ptr> &visitedElements);
/**
* A helper method that iterates over the type hierarchy from @p memberType up to @p headType and collects all
* @p derivationSet and @p blockSet constraints that exists on the way there.
*/
static void foundSubstitutionGroupTypeInheritance(const SchemaType::Ptr &headType,
const SchemaType::Ptr &memberType,
QSet<SchemaType::DerivationMethod> &derivationSet,
NamedSchemaComponent::BlockingConstraints &blockSet);
/**
* Checks if the @p member is transitive to @p head.
*/
static bool substitutionGroupOkTransitive(const XsdElement::Ptr &head,
const XsdElement::Ptr &member,
const NamePool::Ptr &namePool);
/**
* Checks if @p derivedAttributeGroup is a valid restriction for @p attributeGroup.
*/
static bool isValidAttributeGroupRestriction(const XsdAttributeGroup::Ptr &derivedAttributeGroup,
const XsdAttributeGroup::Ptr &attributeGroup,
const XsdSchemaContext::Ptr &context,
QString &errorMsg);
/**
* Checks if @p derivedAttributeUses are a valid restriction for @p attributeUses.
*/
static bool isValidAttributeUsesRestriction(const XsdAttributeUse::List &derivedAttributeUses,
const XsdAttributeUse::List &attributeUses,
const XsdWildcard::Ptr &derivedWildcard,
const XsdWildcard::Ptr &wildcard,
const XsdSchemaContext::Ptr &context,
QString &errorMsg);
/**
* Checks if @p derivedAttributeUses are a valid extension for @p attributeUses.
*/
static bool isValidAttributeUsesExtension(const XsdAttributeUse::List &derivedAttributeUses,
const XsdAttributeUse::List &attributeUses,
const XsdWildcard::Ptr &derivedWildcard,
const XsdWildcard::Ptr &wildcard,
const XsdSchemaContext::Ptr &context,
QString &errorMsg);
private:
Q_DISABLE_COPY(XsdSchemaHelper)
};
}
QT_END_NAMESPACE
QT_END_HEADER
#endif
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