cpptoolsreuse.cpp 5.33 KB
Newer Older
1 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).
6
**
7
** Contact: Nokia Corporation (qt-info@nokia.com)
8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
**
**
** 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.
**
** 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.
**
** If you have questions regarding the use of this file, please contact
29
** Nokia at qt-info@nokia.com.
30 31 32 33 34
**
**************************************************************************/

#include "cpptoolsreuse.h"

35 36 37 38 39
#include <Symbols.h>
#include <CoreTypes.h>
#include <cplusplus/Overview.h>
#include <cplusplus/LookupContext.h>

40 41 42
#include <QSet>
#include <QTextDocument>
#include <QTextCursor>
43
#include <QStringRef>
44

45 46
using namespace CPlusPlus;

47 48
namespace CppTools {

49 50 51 52
static void moveCursorToStartOrEndOfIdentifier(QTextCursor *tc,
                                               QTextCursor::MoveOperation op,
                                               int posDiff = 0)
{
53 54 55 56
    QTextDocument *doc = tc->document();
    if (!doc)
        return;

57
    QChar ch = doc->characterAt(tc->position() - posDiff);
58
    while (ch.isLetterOrNumber() || ch == QLatin1Char('_')) {
59 60
        tc->movePosition(op);
        ch = doc->characterAt(tc->position() - posDiff);
61 62 63
    }
}

64 65 66 67 68 69 70 71 72 73
void moveCursorToEndOfIdentifier(QTextCursor *tc)
{
    moveCursorToStartOrEndOfIdentifier(tc, QTextCursor::NextCharacter);
}

void moveCursorToStartOfIdentifier(QTextCursor *tc)
{
    moveCursorToStartOrEndOfIdentifier(tc, QTextCursor::PreviousCharacter, 1);
}

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
static bool isOwnershipRAIIName(const QString &name)
{
    static QSet<QString> knownNames;
    if (knownNames.isEmpty()) {
        // Qt
        knownNames.insert(QLatin1String("QScopedPointer"));
        knownNames.insert(QLatin1String("QScopedArrayPointer"));
        knownNames.insert(QLatin1String("QMutexLocker"));
        knownNames.insert(QLatin1String("QReadLocker"));
        knownNames.insert(QLatin1String("QWriteLocker"));
        // Standard C++
        knownNames.insert(QLatin1String("auto_ptr"));
        knownNames.insert(QLatin1String("unique_ptr"));
        // Boost
        knownNames.insert(QLatin1String("scoped_ptr"));
        knownNames.insert(QLatin1String("scoped_array"));
    }

    return knownNames.contains(name);
}

bool isOwnershipRAIIType(CPlusPlus::Symbol *symbol, const LookupContext &context)
{
    if (!symbol)
        return false;

    // This is not a "real" comparison of types. What we do is to resolve the symbol
    // in question and then try to match its name with already known ones.
    if (symbol->isDeclaration()) {
        Declaration *declaration = symbol->asDeclaration();
        const NamedType *namedType = declaration->type()->asNamedType();
        if (namedType) {
            ClassOrNamespace *clazz = context.lookupType(namedType->name(),
                                                         declaration->enclosingScope());
            if (clazz && !clazz->symbols().isEmpty()) {
                Overview overview;
                Symbol *symbol = clazz->symbols().at(0);
                return isOwnershipRAIIName(overview.prettyName(symbol->name()));
            }
        }
    }

    return false;
}

Leandro Melo's avatar
Leandro Melo committed
119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134
bool isValidIdentifier(const QString &s)
{
    const int length = s.length();
    for (int i = 0; i < length; ++i) {
        const QChar &c = s.at(i);
        if (i == 0) {
            if (!c.isLetter() && c != QLatin1Char('_'))
                return false;
        } else {
            if (!c.isLetterOrNumber() && c != QLatin1Char('_'))
                return false;
        }
    }
    return true;
}

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
bool isQtKeyword(const QStringRef &text)
{
    switch (text.length()) {
    case 4:
        switch (text.at(0).toLatin1()) {
        case 'e':
            if (text == QLatin1String("emit"))
                return true;
            break;
        case 'S':
            if (text == QLatin1String("SLOT"))
                return true;
            break;
        }
        break;

    case 5:
        if (text.at(0) == QLatin1Char('s') && text == QLatin1String("slots"))
            return true;
        break;

    case 6:
        if (text.at(0) == QLatin1Char('S') && text == QLatin1String("SIGNAL"))
            return true;
        break;

    case 7:
        switch (text.at(0).toLatin1()) {
        case 's':
            if (text == QLatin1String("signals"))
                return true;
            break;
        case 'f':
            if (text == QLatin1String("foreach") || text ==  QLatin1String("forever"))
                return true;
            break;
        }
        break;

    default:
        break;
    }
    return false;
}
179

180
} // CppTools