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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the test suite 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.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qbic.h"
#include "QtCore/qfile.h"
#include "QtCore/qdebug.h"
void QBic::addBlacklistedClass(const QString &wildcard)
{
blackList.append(QRegExp(wildcard, Qt::CaseSensitive, QRegExp::Wildcard));
}
void QBic::removeBlacklistedClass(const QString &wildcard)
{
blackList.removeAll(QRegExp(wildcard, Qt::CaseSensitive, QRegExp::Wildcard));
}
bool QBic::isBlacklisted(const QString &className) const
{
// all templates are blacklisted
if (className.contains('<'))
return true;
for (int i = 0; i < blackList.count(); ++i)
if (blackList.at(i).exactMatch(className))
return true;
return false;
}
static QStringList normalizedVTable(const QStringList &entry)
{
QStringList normalized;
for (int i = 2; i < entry.count(); ++i) {
const QString line = entry.at(i).simplified();
bool isOk = false;
int num = line.left(line.indexOf(QLatin1Char(' '))).toInt(&isOk);
if (!isOk) {
qWarning("unrecognized line: %s", qPrintable(line));
continue;
}
QString sym = line.mid(line.indexOf(QLatin1Char(' ')) + 1);
if (sym.startsWith(QLatin1Char('('))) {
if (sym.endsWith(QLatin1Char(')'))) {
sym = sym.mid(sym.lastIndexOf('(') + 1);
sym.chop(1);
} else {
sym = sym.mid(sym.lastIndexOf(QLatin1Char(')')) + 1);
}
} else {
sym = sym.left(sym.indexOf(QLatin1Char('(')));
}
if (sym.startsWith(QLatin1String("& ")))
sym.remove(1, 1);
if (sym.startsWith(QLatin1String("-0")) || sym.startsWith(QLatin1String("0"))) {
if (sym.endsWith('u'))
sym.chop(1);
bool isOk = false;
qint64 num = sym.toLongLong(&isOk, 16);
if (!isOk) {
qWarning("unrecognized token: %s", qPrintable(sym));
continue;
}
if (sizeof(void*) == 4)
sym = QString::number(int(num));
else
sym = QString::number(num);
}
normalized << QString::number(num) + QLatin1Char(' ') + sym;
}
return normalized;
}
QBic::Info QBic::parseOutput(const QByteArray &ba) const
{
Info info;
const QStringList source = QString::fromLatin1(ba).split("\n\n");
foreach(QString str, source) {
QStringList entry = str.split('\n');
if (entry.count() < 2)
continue;
if (entry.at(0).startsWith("Class ")) {
const QString className = entry.at(0).mid(6);
if (isBlacklisted(className))
continue;
QRegExp rx("size=(\\d+)");
if (rx.indexIn(entry.at(1)) == -1) {
qWarning("Could not parse class information for className %s", className.toLatin1().constData());
continue;
}
info.classSizes[className] = rx.cap(1).toInt();
} else if (entry.at(0).startsWith("Vtable for ")) {
const QString className = entry.at(0).mid(11);
if (isBlacklisted(className))
continue;
info.classVTables[className] = normalizedVTable(entry);
}
}
return info;
}
QBic::Info QBic::parseFile(const QString &fileName) const
{
QFile f(fileName);
if (!f.open(QIODevice::ReadOnly | QIODevice::Text))
return Info();
QByteArray ba = f.readAll();
f.close();
return parseOutput(ba);
}
enum VTableDiffResult { Match, Mismatch, Reimp };
static VTableDiffResult diffVTableEntry(const QString &v1, const QString &v2)
{
if (v1 == v2)
return Match;
if (v2.endsWith(QLatin1String("__cxa_pure_virtual")))
return Reimp;
if (!v1.contains(QLatin1String("::")) || !v2.contains(QLatin1String("::")))
return Mismatch;
const QString sym1 = v1.mid(v1.lastIndexOf(QLatin1String("::")) + 2);
const QString sym2 = v2.mid(v2.lastIndexOf(QLatin1String("::")) + 2);
if (sym1 == sym2)
return Reimp;
return Mismatch;
}
QBic::VTableDiff QBic::diffVTables(const Info &oldLib, const Info &newLib) const
{
VTableDiff result;
for (QHash<QString, QStringList>::const_iterator it = newLib.classVTables.constBegin();
it != newLib.classVTables.constEnd(); ++it) {
if (!oldLib.classVTables.contains(it.key())) {
result.addedVTables.append(it.key());
continue;
}
const QStringList oldVTable = oldLib.classVTables.value(it.key());
const QStringList vTable = it.value();
if (vTable.count() != oldVTable.count()) {
result.modifiedVTables.append(QPair<QString, QString>(it.key(),
QLatin1String("size mismatch")));
continue;
}
for (int i = 0; i < vTable.count(); ++i) {
VTableDiffResult diffResult = diffVTableEntry(vTable.at(i), oldVTable.at(i));
switch (diffResult) {
case Match:
// do nothing
break;
case Mismatch:
result.modifiedVTables.append(QPair<QString, QString>(oldVTable.at(i),
vTable.at(i)));
break;
case Reimp:
result.reimpMethods.append(QPair<QString, QString>(oldVTable.at(i), vTable.at(i)));
break;
}
}
}
for (QHash<QString, QStringList>::const_iterator it = oldLib.classVTables.constBegin();
it != oldLib.classVTables.constEnd(); ++it) {
if (!newLib.classVTables.contains(it.key()))
result.removedVTables.append(it.key());
}
return result;
}
QBic::SizeDiff QBic::diffSizes(const Info &oldLib, const Info &newLib) const
{
QBic::SizeDiff result;
for (QHash<QString, int>::const_iterator it = newLib.classSizes.constBegin();
it != newLib.classSizes.constEnd(); ++it) {
if (!oldLib.classSizes.contains(it.key())) {
result.added.append(it.key());
continue;
}
int oldSize = oldLib.classSizes.value(it.key());
int newSize = it.value();
if (oldSize != newSize)
result.mismatch.append(it.key());
}
for (QHash<QString, int>::const_iterator it = oldLib.classSizes.constBegin();
it != oldLib.classSizes.constEnd(); ++it) {
if (!newLib.classSizes.contains(it.key()))
result.removed.append(it.key());
}
return result;
}
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