id.cpp 2.65 KB
Newer Older
1
/**************************************************************************
con's avatar
con committed
2
3
4
**
** This file is part of Qt Creator
**
hjk's avatar
hjk committed
5
** Copyright (c) 2012 Nokia Corporation and/or its subsidiary(-ies).
con's avatar
con committed
6
**
7
** Contact: Nokia Corporation (qt-info@nokia.com)
con's avatar
con committed
8
**
9
**
10
** GNU Lesser General Public License Usage
11
**
hjk's avatar
hjk committed
12
13
14
15
16
17
** 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.
18
**
con's avatar
con committed
19
** In addition, as a special exception, Nokia gives you certain additional
hjk's avatar
hjk committed
20
** rights. These rights are described in the Nokia Qt LGPL Exception
con's avatar
con committed
21
22
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
hjk's avatar
hjk committed
23
24
25
26
27
** 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.
**
con's avatar
con committed
28
** If you have questions regarding the use of this file, please contact
29
** Nokia at qt-info@nokia.com.
con's avatar
con committed
30
**
31
**************************************************************************/
hjk's avatar
hjk committed
32

33
#include "id.h"
con's avatar
con committed
34
#include "coreconstants.h"
35
#include "icontext.h"
con's avatar
con committed
36

37
38
#include <utils/qtcassert.h>

39
#include <QtCore/QHash>
con's avatar
con committed
40

41
namespace Core {
con's avatar
con committed
42

43
44
/*!
    \class Core::Id
con's avatar
con committed
45

46
47
48
49
50
51
    \brief The class Id encapsulates an identifier. It is used as a type-safe
    helper class instead of a \c QString or \c QByteArray. The internal
    representation of the id is assumed to be plain 7-bit-clean ASCII.

*/

52
53
54
static int lastUid = 0;
static QVector<QByteArray> stringFromId;
static QHash<QByteArray, int> idFromString;
con's avatar
con committed
55

56
static int theId(const QByteArray &ba)
con's avatar
con committed
57
{
58
59
60
61
62
63
64
65
66
67
    QTC_ASSERT(!ba.isEmpty(), /**/);
    int res = idFromString.value(ba);
    if (res == 0) {
        if (lastUid == 0)
            stringFromId.append(QByteArray());
        res = ++lastUid;
        idFromString[ba] = res;
        stringFromId.append(ba);
    }
    return res;
con's avatar
con committed
68
69
}

70
71
72
Id::Id(const char *name)
    : m_id(theId(name))
{}
con's avatar
con committed
73

74
75
76
77
78
79
80
Id::Id(const QString &name)
   : m_id(theId(name.toLatin1()))
{}

QByteArray Id::name() const
{
    return stringFromId.at(m_id);
con's avatar
con committed
81
82
}

83
QString Id::toString() const
con's avatar
con committed
84
{
85
    return QString::fromLatin1(stringFromId[m_id]);
86
87
88
89
}

Context::Context(const char *id, int offset)
{
90
    d.append(Id(QLatin1String(id) + QString::number(offset)).uniqueIdentifier());
91
92
93
94
}

void Context::add(const char *id)
{
95
    d.append(Id(id).uniqueIdentifier());
96
97
98
99
}

bool Context::contains(const char *id) const
{
100
    return d.contains(Id(id).uniqueIdentifier());
101
}
102
103

} // namespace Core