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46 // This file is not part of the Qt API. It exists purely as an
47 // implementation detail. This header file may change from version to
48 // version without notice, or even be removed.
52 #ifndef Patternist_AbstractFunctionFactory_H
53 #define Patternist_AbstractFunctionFactory_H
55 #include <private/qcommonnamespaces_p.h>
56 #include <private/qfunctionfactory_p.h>
57 #include <private/qfunctionsignature_p.h>
67 * @short Supplies convenience code for the function factories.
69 * @ingroup Patternist_functions
70 * @see XPath10CoreFunctions
71 * @see XPath20CoreFunctions
72 * @see XSLT10CoreFunctions
73 * @author Vincent Ricard <magic@magicninja.org>
75 class AbstractFunctionFactory : public FunctionFactory
78 virtual Expression::Ptr createFunctionCall(const QXmlName name,
79 const Expression::List &arguments,
80 const StaticContext::Ptr &context,
81 const SourceLocationReflection *const r);
83 virtual FunctionSignature::Hash functionSignatures() const;
87 * This function is responsible for creating the actual Expression, corresponding
88 * to @p localName and the function signature @p sign. It is called by
89 * createFunctionCall(), once it have been determined the function actually
90 * exists and have the correct arity.
92 * This function will only be called for names in the @c fn namespace.
94 virtual Expression::Ptr retrieveExpression(const QXmlName name,
95 const Expression::List &args,
96 const FunctionSignature::Ptr &sign) const = 0;
99 FunctionSignature::Ptr addFunction(const QXmlName::LocalNameCode localName,
100 const FunctionSignature::Arity minArgs,
101 const FunctionSignature::Arity maxArgs,
102 const SequenceType::Ptr &returnType,
103 const Expression::Properties props)
105 return addFunction(localName,
109 Expression::IDIgnorableExpression,
113 FunctionSignature::Ptr addFunction(const QXmlName::LocalNameCode &localName,
114 const FunctionSignature::Arity minArgs,
115 const FunctionSignature::Arity maxArgs,
116 const SequenceType::Ptr &returnType,
117 const Expression::ID id = Expression::IDIgnorableExpression,
118 const Expression::Properties props = Expression::Properties(),
119 const StandardNamespaces::ID ns = StandardNamespaces::fn)
121 const QXmlName name(ns, localName);
123 const FunctionSignature::Ptr s(new FunctionSignature(name, minArgs, maxArgs,
124 returnType, props, id));
126 m_signatures.insert(name, s);
130 static inline QXmlName::LocalNameCode argument(const NamePool::Ptr &np, const char *const name)
132 return np->allocateLocalName(QLatin1String(name));
135 FunctionSignature::Hash m_signatures;
139 * @short Determines whether @p arity is a valid number of
140 * arguments for the function with signature @p sign.
142 * If it is not, a static error with error code ReportContext::XPST0017
143 * is issued via @p context.
145 void verifyArity(const FunctionSignature::Ptr &sign,
146 const StaticContext::Ptr &context,
147 const xsInteger arity,
148 const SourceLocationReflection *const r) const;