/**************************************************************************** ** ** 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_PatternPlatform_H #define Patternist_PatternPlatform_H #include #include #include "qfunctioncall_p.h" QT_BEGIN_HEADER QT_BEGIN_NAMESPACE namespace QPatternist { /** * @short Contains functionality for functions and expressions that * uses regular expressions. * * @ingroup Patternist_utils * @author Frans Englich */ class PatternPlatform : public FunctionCall { public: /** * @see XQuery 1.0 and * XPath 2.0 Functions and Operators, 7.6.1.1 Flags */ enum Flag { /** * No flags are set. Default behavior is used. */ NoFlags = 0, /** * Flag @c s */ DotAllMode = 1, /** * Flag @c m */ MultiLineMode = 2, /** * Flag @c i */ CaseInsensitive = 4, /** * Flag @c x */ SimplifyWhitespace = 8 }; typedef QFlags Flags; virtual Expression::Ptr compress(const StaticContext::Ptr &context); /** * Retrieves the pattern supplied in the arguments, taking care of compiling it, * settings its flags, and everything else required for getting it ready to use. If an error * occurs, an appropriate error is raised via @p context. */ const QRegExp pattern(const DynamicContext::Ptr &context) const; /** * @returns the number of captures, also called parenthesized sub-expressions, the pattern has. * * If the pattern isn't precompiled, -1 is returned. */ inline int captureCount() const; protected: /** * @short This constructor is protected, because this class is supposed to be sub-classed. * * @param flagsPosition an index position specifying the operand containing the pattern * flags. */ PatternPlatform(const qint8 flagsPosition); private: /** * Enum telling whether the flags, pattern, or both * have been compiled at compile time. */ enum PreCompiledPart { NoPart = 0, PatternPrecompiled = 1, FlagsPrecompiled = 2, FlagsAndPattern = PatternPrecompiled | FlagsPrecompiled }; typedef QFlags PreCompiledParts; Q_DISABLE_COPY(PatternPlatform) Flags parseFlags(const QString &flags, const DynamicContext::Ptr &context) const; QRegExp parsePattern(const QString &pattern, const DynamicContext::Ptr &context) const; static void applyFlags(const Flags flags, QRegExp &pattern); /** * The parts that have been pre-compiled at compile time. */ PreCompiledParts m_compiledParts; Flags m_flags; QRegExp m_pattern; const qint8 m_flagsPosition; }; inline int PatternPlatform::captureCount() const { if(m_compiledParts.testFlag(PatternPrecompiled)) return m_pattern.numCaptures(); else return -1; } Q_DECLARE_OPERATORS_FOR_FLAGS(PatternPlatform::Flags) } QT_END_NAMESPACE QT_END_HEADER #endif