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42 #ifndef PatternistSDK_DebugExpressionFactory_H
43 #define PatternistSDK_DebugExpressionFactory_H
46 #include "qexpressionfactory_p.h"
47 #include "qfunctionfactory_p.h"
53 namespace QPatternistSDK
58 * @short Is a QPatternist::ExpressionFactory, with the
59 * difference that it provides the hooks for building from a tree of
60 * debug data from the compiled expression.
62 * This tree can be retrieved via astTree(). The astTree() function
63 * returns the AST built the last time createExpression() was called.
65 * @ingroup PatternistSDK
66 * @author Frans Englich <frans.englich@nokia.com>
68 class Q_PATTERNISTSDK_EXPORT DebugExpressionFactory : public QPatternist::ExpressionFactory
71 DebugExpressionFactory() : m_ast(0)
75 typedef QExplicitlySharedDataPointer<DebugExpressionFactory> Ptr;
77 * Identical to ExpressionFactory::createExpression() with the difference
78 * that it builds an ASTItem tree which can be accessed via astTree().
80 virtual QPatternist::Expression::Ptr createExpression(QIODevice *const expr,
81 const QPatternist::StaticContext::Ptr &context,
82 const QXmlQuery::QueryLanguage lang,
83 const QPatternist::SequenceType::Ptr &requiredType,
85 const QXmlName &initialTemplateName);
88 * @returns an ASTItem tree built for the last created expression,
89 * via createExpression().
91 virtual ASTItem *astTree() const;
94 * @returns a list containing string representations of all available
95 * functions in Patternist. Each QString in the returned QStringList
96 * is a function synopsis for human consumption.
98 static QStringList availableFunctionSignatures();
102 * Performs the ASTItem tree building.
104 virtual void processTreePass(const QPatternist::Expression::Ptr &tree,
105 const CompilationStage stage);
107 void processTemplateRule(const QPatternist::Expression::Ptr &body,
108 const QPatternist::TemplatePattern::Ptr &pattern,
109 const QXmlName &mode,
110 const TemplateCompilationStage stage);
112 void processNamedTemplate(const QXmlName &name,
113 const QPatternist::Expression::Ptr &body,
114 const TemplateCompilationStage stage);
116 static ASTItem *buildASTTree(const QPatternist::Expression::Ptr &expr,
117 ASTItem *const parent,
118 const QPatternist::SequenceType::Ptr &reqType);
128 // vim: et:ts=4:sw=4:sts=4