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Diffstat (limited to 'src/xmlpatterns/functions/qabstractfunctionfactory_p.h')
| -rw-r--r-- | src/xmlpatterns/functions/qabstractfunctionfactory_p.h | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/src/xmlpatterns/functions/qabstractfunctionfactory_p.h b/src/xmlpatterns/functions/qabstractfunctionfactory_p.h new file mode 100644 index 0000000..b988658 --- /dev/null +++ b/src/xmlpatterns/functions/qabstractfunctionfactory_p.h @@ -0,0 +1,157 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 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 qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +// +// 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_AbstractFunctionFactory_H +#define Patternist_AbstractFunctionFactory_H + +#include "qcommonnamespaces_p.h" +#include "qfunctionfactory_p.h" +#include "qfunctionsignature_p.h" + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +namespace QPatternist +{ + + /** + * @short Supplies convenience code for the function factories. + * + * @ingroup Patternist_functions + * @see XPath10CoreFunctions + * @see XPath20CoreFunctions + * @see XSLT10CoreFunctions + * @author Vincent Ricard <magic@magicninja.org> + */ + class AbstractFunctionFactory : public FunctionFactory + { + public: + virtual Expression::Ptr createFunctionCall(const QXmlName name, + const Expression::List &arguments, + const StaticContext::Ptr &context, + const SourceLocationReflection *const r); + + virtual FunctionSignature::Hash functionSignatures() const; + + protected: + /** + * This function is responsible for creating the actual Expression, corresponding + * to @p localName and the function signature @p sign. It is called by + * createFunctionCall(), once it have been determined the function actually + * exists and have the correct arity. + * + * This function will only be called for names in the @c fn namespace. + */ + virtual Expression::Ptr retrieveExpression(const QXmlName name, + const Expression::List &args, + const FunctionSignature::Ptr &sign) const = 0; + + inline + FunctionSignature::Ptr addFunction(const QXmlName::LocalNameCode localName, + const FunctionSignature::Arity minArgs, + const FunctionSignature::Arity maxArgs, + const SequenceType::Ptr &returnType, + const Expression::Properties props) + { + return addFunction(localName, + minArgs, + maxArgs, + returnType, + Expression::IDIgnorableExpression, + props); + } + + FunctionSignature::Ptr addFunction(const QXmlName::LocalNameCode &localName, + const FunctionSignature::Arity minArgs, + const FunctionSignature::Arity maxArgs, + const SequenceType::Ptr &returnType, + const Expression::ID id = Expression::IDIgnorableExpression, + const Expression::Properties props = Expression::Properties(), + const StandardNamespaces::ID ns = StandardNamespaces::fn) + { + const QXmlName name(ns, localName); + + const FunctionSignature::Ptr s(new FunctionSignature(name, minArgs, maxArgs, + returnType, props, id)); + + m_signatures.insert(name, s); + return s; + } + + static inline QXmlName::LocalNameCode argument(const NamePool::Ptr &np, const char *const name) + { + return np->allocateLocalName(QLatin1String(name)); + } + + FunctionSignature::Hash m_signatures; + + private: + /** + * @short Determines whether @p arity is a valid number of + * arguments for the function with signature @p sign. + * + * If it is not, a static error with error code ReportContext::XPST0017 + * is issued via @p context. + */ + void verifyArity(const FunctionSignature::Ptr &sign, + const StaticContext::Ptr &context, + const xsInteger arity, + const SourceLocationReflection *const r) const; + + }; +} + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif |