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
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
/****************************************************************************
**
** 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_UserFunctionCallsite_H
#define Patternist_UserFunctionCallsite_H
#include "qcallsite_p.h"
#include "qfunctionsignature_p.h"
#include "qunlimitedcontainer_p.h"
#include "quserfunction_p.h"
#include "qvariabledeclaration_p.h"
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
namespace QPatternist
{
/**
* @short Performs a call to a UserFunction.
*
* UserFunctionCallsite is the call site to a function that has been
* declared in the query using <tt>declare function</tt>. That is, it is
* never used for builtin functions such as <tt>fn:count()</tt>.
*
* @see UserFunction
* @see ArgumentReference
* @author Frans Englich <frans.englich@nokia.com>
* @ingroup Patternist_expressions
*/
class UserFunctionCallsite : public CallSite
{
public:
typedef QExplicitlySharedDataPointer<UserFunctionCallsite> Ptr;
typedef QList<UserFunctionCallsite::Ptr> List;
UserFunctionCallsite(const QXmlName name,
const FunctionSignature::Arity arity);
virtual bool evaluateEBV(const DynamicContext::Ptr &context) const;
virtual Item::Iterator::Ptr evaluateSequence(const DynamicContext::Ptr &context) const;
virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;
virtual void evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const;
virtual Expression::Ptr typeCheck(const StaticContext::Ptr &context,
const SequenceType::Ptr &reqType);
/**
* We call compress on our body.
*/
virtual Expression::Ptr compress(const StaticContext::Ptr &context);
virtual Expression::Properties properties() const;
/**
* @short Returns the types declared in the function declaration.
*
* @see CallTemplate::expectedOperandTypes()
*/
virtual SequenceType::List expectedOperandTypes() const;
virtual SequenceType::Ptr staticType() const;
virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;
/**
* @returns always IDUserFunctionCallsite.
*/
virtual ID id() const;
/**
* If @p slotOffset is -1, it means this function has no arguments.
*/
void setSource(const UserFunction::Ptr &userFunction,
const VariableSlotID cacheSlotOffset);
/**
* @returns @c true, if a function definition with signature @p sign
* would be valid to call from this callsite, otherwise @c false.
*/
bool isSignatureValid(const FunctionSignature::Ptr &sign) const;
FunctionSignature::Arity arity() const;
inline Expression::Ptr body() const
{
return m_body;
}
virtual bool configureRecursion(const CallTargetDescription::Ptr &sign);
virtual CallTargetDescription::Ptr callTargetDescription() const;
private:
/**
* Creates a new context sets the arguments, and returns it.
*/
DynamicContext::Ptr bindVariables(const DynamicContext::Ptr &context) const;
const FunctionSignature::Arity m_arity;
/**
* The reason this variable, as well as others, aren't const, is that
* the binding to the actual function, is resolved after this
* UserFunctionCallsite has been created.
*/
VariableSlotID m_expressionSlotOffset;
/**
* @note This may be different from m_functionDeclaration->body(). It
* may differ on a per-callsite basis.
*/
Expression::Ptr m_body;
UserFunction::Ptr m_functionDeclaration;
};
/**
* @short Formats UserFunctionCallsite.
*
* @relates UserFunctionCallsite
*/
static inline QString formatFunction(const UserFunctionCallsite::Ptr &func)
{
Q_UNUSED(func);
// TODO TODO TODO
// TODO Make UserFunctionCallsite always use a FunctionSignature
return QLatin1String("<span class='XQuery-function'>") +
QString() +
//escape(func->name()->toString()) +
QLatin1String("</span>");
}
}
QT_END_NAMESPACE
QT_END_HEADER
#endif
|
