| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtXmlPatterns module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
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| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
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| ****************************************************************************/ |
| |
| // |
| // 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 <QFlags> |
| #include <QRegExp> |
| |
| #include <private/qfunctioncall_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| namespace QPatternist |
| { |
| /** |
| * @short Contains functionality for functions and expressions that |
| * uses regular expressions. |
| * |
| * @ingroup Patternist_utils |
| * @author Frans Englich <frans.englich@nokia.com> |
| */ |
| class PatternPlatform : public FunctionCall |
| { |
| public: |
| /** |
| * @see <a href="http://www.w3.org/TR/xpath-functions/#flags">XQuery 1.0 and |
| * XPath 2.0 Functions and Operators, 7.6.1.1 Flags</a> |
| */ |
| 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<Flag> 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. |
| */ |
| 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; |
| |
| /** |
| * @short Parses pattern |
| */ |
| static QRegExp parsePattern(const QString &pattern, |
| const ReportContext::Ptr &context, |
| const SourceLocationReflection *const location); |
| |
| |
| 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<PreCompiledPart> PreCompiledParts; |
| |
| /** |
| * @short Calls the public parsePattern() function and passes in @c |
| * this as the location. |
| */ |
| inline QRegExp parsePattern(const QString &pattern, |
| const ReportContext::Ptr &context) const; |
| |
| Q_DISABLE_COPY(PatternPlatform) |
| |
| Flags parseFlags(const QString &flags, |
| 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.captureCount(); |
| else |
| return -1; |
| } |
| |
| Q_DECLARE_OPERATORS_FOR_FLAGS(PatternPlatform::Flags) |
| } |
| |
| QT_END_NAMESPACE |
| |
| #endif |