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Diffstat (limited to 'src/xmlpatterns/parser/qtokensource_p.h')
| -rw-r--r-- | src/xmlpatterns/parser/qtokensource_p.h | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/src/xmlpatterns/parser/qtokensource_p.h b/src/xmlpatterns/parser/qtokensource_p.h new file mode 100644 index 0000000..0ffb916 --- /dev/null +++ b/src/xmlpatterns/parser/qtokensource_p.h @@ -0,0 +1,169 @@ +/**************************************************************************** +** +** Copyright (C) 2011 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. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +// +// 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_TokenSource_H +#define Patternist_TokenSource_H + +#include "qatomiccomparator_p.h" +#include "qatomicmathematician_p.h" +#include "qcombinenodes_p.h" +#include "qfunctionargument_p.h" +#include "qitem_p.h" +#include "qitemtype_p.h" +#include "qorderby_p.h" +#include "qpath_p.h" +#include "qquerytransformparser_p.h" +#include "qvalidate_p.h" + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +template<typename T> class QQueue; + +namespace QPatternist +{ + /** + * @short A union of all the enums the parser uses. + */ + union EnumUnion + { + AtomicComparator::Operator valueOperator; + AtomicMathematician::Operator mathOperator; + CombineNodes::Operator combinedNodeOp; + QXmlNodeModelIndex::Axis axis; + QXmlNodeModelIndex::DocumentOrder nodeOperator; + StaticContext::BoundarySpacePolicy boundarySpacePolicy; + StaticContext::ConstructionMode constructionMode; + StaticContext::OrderingEmptySequence orderingEmptySequence; + StaticContext::OrderingMode orderingMode; + OrderBy::OrderSpec::Direction sortDirection; + Validate::Mode validationMode; + VariableSlotID slot; + int tokenizerPosition; + qint16 zeroer; + bool Bool; + xsDouble Double; + Path::Kind pathKind; + }; + + /** + * @short Base class for components that needs to return tokens. + * + * TokenSource represents a stream of Token instances. The end + * is reached when readNext() returns a Token constructed with + * END_OF_FILE. + * + * @see <a href="http://www.w3.org/TR/xquery-xpath-parsing/">Building a + * Tokenizer for XPath or XQuery</a> + * @author Frans Englich <frans.englich@nokia.com> + */ + class TokenSource : public QSharedData + { + public: + /** + * typedef for the enum Bison generates that contains + * the token symbols. + */ + typedef yytokentype TokenType; + + /** + * Represents a token by carrying its name and value. + */ + class Token + { + public: + /** + * Constructs an invalid Token. This default constructor + * is need in Qt's container classes. + */ + inline Token() {} + inline Token(const TokenType t) : type(t) {} + inline Token(const TokenType t, const QString &val) : type(t), value(val) {} + + bool hasError() const + { + return type == ERROR; + } + + TokenType type; + QString value; + }; + + typedef QExplicitlySharedDataPointer<TokenSource> Ptr; + typedef QQueue<Ptr> Queue; + + /** + * The C++ compiler cannot synthesize it when we use the + * Q_DISABLE_COPY() macro. + */ + inline TokenSource() + { + } + + virtual ~TokenSource(); + + /** + * @returns the next token. + */ + + virtual Token nextToken(YYLTYPE *const sourceLocator) = 0; + + private: + Q_DISABLE_COPY(TokenSource) + }; +} + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif |