summaryrefslogtreecommitdiffstats
path: root/src/xmlpatterns/functions/qabstractfunctionfactory_p.h
blob: cc7c23fb0b139f0ac66cb4671fc580db683a9957 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
/****************************************************************************
**
** Copyright (C) 2012 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

//
//  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_AbstractFunctionFactory_H
#define Patternist_AbstractFunctionFactory_H

#include "qcommonnamespaces_p.h"
#include "qfunctionfactory_p.h"
#include "qfunctionsignature_p.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

namespace QPatternist
{

    /**
     * @short Supplies convenience code for the function factories.
     *
     * @ingroup Patternist_functions
     * @see XPath10CoreFunctions
     * @see XPath20CoreFunctions
     * @see XSLT10CoreFunctions
     * @author Vincent Ricard <magic@magicninja.org>
     */
    class AbstractFunctionFactory : public FunctionFactory
    {
    public:
        virtual Expression::Ptr createFunctionCall(const QXmlName name,
                                                   const Expression::List &arguments,
                                                   const StaticContext::Ptr &context,
                                                   const SourceLocationReflection *const r);

        virtual FunctionSignature::Hash functionSignatures() const;

    protected:
        /**
         * This function is responsible for creating the actual Expression, corresponding
         * to @p localName and the function signature @p sign. It is called by
         * createFunctionCall(), once it have been determined the function actually
         * exists and have the correct arity.
         *
         * This function will only be called for names in the @c fn namespace.
         */
        virtual Expression::Ptr retrieveExpression(const QXmlName name,
                                                   const Expression::List &args,
                                                   const FunctionSignature::Ptr &sign) const = 0;

        inline
        FunctionSignature::Ptr addFunction(const QXmlName::LocalNameCode localName,
                                           const FunctionSignature::Arity minArgs,
                                           const FunctionSignature::Arity maxArgs,
                                           const SequenceType::Ptr &returnType,
                                           const Expression::Properties props)
        {
            return addFunction(localName,
                               minArgs,
                               maxArgs,
                               returnType,
                               Expression::IDIgnorableExpression,
                               props);
        }

        FunctionSignature::Ptr addFunction(const QXmlName::LocalNameCode &localName,
                                           const FunctionSignature::Arity minArgs,
                                           const FunctionSignature::Arity maxArgs,
                                           const SequenceType::Ptr &returnType,
                                           const Expression::ID id = Expression::IDIgnorableExpression,
                                           const Expression::Properties props = Expression::Properties(),
                                           const StandardNamespaces::ID ns = StandardNamespaces::fn)
        {
            const QXmlName name(ns, localName);

            const FunctionSignature::Ptr s(new FunctionSignature(name, minArgs, maxArgs,
                                                                 returnType, props, id));

            m_signatures.insert(name, s);
            return s;
        }

        static inline QXmlName::LocalNameCode argument(const NamePool::Ptr &np, const char *const name)
        {
            return np->allocateLocalName(QLatin1String(name));
        }

        FunctionSignature::Hash m_signatures;

    private:
        /**
         * @short Determines whether @p arity is a valid number of
         * arguments for the function with signature @p sign.
         *
         * If it is not, a static error with error code ReportContext::XPST0017
         * is issued via @p context.
         */
        void verifyArity(const FunctionSignature::Ptr &sign,
                         const StaticContext::Ptr &context,
                         const xsInteger arity,
                         const SourceLocationReflection *const r) const;

    };
}

QT_END_NAMESPACE

QT_END_HEADER

#endif