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qt-creator/src/plugins/debugger/stackhandler.cpp

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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** Commercial Usage
**
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
**
**************************************************************************/
#include "stackhandler.h"
#include "debuggeractions.h"
#include <utils/qtcassert.h>
#include <utils/savedaction.h>
#include <QtCore/QAbstractTableModel>
#include <QtCore/QDebug>
#include <QtCore/QFileInfo>
#include <QtCore/QDir>
namespace Debugger {
namespace Internal {
StackFrame::StackFrame()
: level(0), line(0)
{}
void StackFrame::clear()
{
line = level = 0;
function.clear();
file.clear();
from.clear();
to.clear();
address.clear();
}
bool StackFrame::isUsable() const
{
return !file.isEmpty() && QFileInfo(file).isReadable();
}
QString StackFrame::toString() const
{
QString res;
QTextStream str(&res);
str << StackHandler::tr("Address:") << ' ' << address << ' '
<< StackHandler::tr("Function:") << ' ' << function << ' '
<< StackHandler::tr("File:") << ' ' << file << ' '
<< StackHandler::tr("Line:") << ' ' << line << ' '
<< StackHandler::tr("From:") << ' ' << from << ' '
<< StackHandler::tr("To:") << ' ' << to;
return res;
}
QString StackFrame::toToolTip() const
{
QString res;
QTextStream str(&res);
str << "<html><body><table>"
<< "<tr><td>" << StackHandler::tr("Address:") << "</td><td>" << address << "</td></tr>"
<< "<tr><td>" << StackHandler::tr("Function:") << "</td><td>" << function << "</td></tr>"
<< "<tr><td>" << StackHandler::tr("File:") << "</td><td>" << QDir::toNativeSeparators(file) << "</td></tr>"
<< "<tr><td>" << StackHandler::tr("Line:") << "</td><td>" << line << "</td></tr>"
<< "<tr><td>" << StackHandler::tr("From:") << "</td><td>" << from << "</td></tr>"
<< "<tr><td>" << StackHandler::tr("To:") << "</td><td>" << to << "</td></tr>"
<< "</table></body></html>";
return res;
}
QDebug operator<<(QDebug d, const StackFrame &f)
{
QString res;
QTextStream str(&res);
str << "level=" << f.level << " address=" << f.address;
if (!f.function.isEmpty())
str << ' ' << f.function;
if (!f.file.isEmpty())
str << ' ' << f.file << ':' << f.line;
if (!f.from.isEmpty())
str << " from=" << f.from;
if (!f.to.isEmpty())
str << " to=" << f.to;
d.nospace() << res;
return d;
}
////////////////////////////////////////////////////////////////////////
//
// StackHandler
//
////////////////////////////////////////////////////////////////////////
StackHandler::StackHandler(QObject *parent)
: QAbstractTableModel(parent),
m_positionIcon(QIcon(":/debugger/images/location_16.png")),
m_emptyIcon(QIcon(":/debugger/images/debugger_empty_14.png"))
{
m_currentIndex = 0;
m_canExpand = false;
connect(theDebuggerAction(OperateByInstruction), SIGNAL(triggered()),
this, SLOT(resetModel()));
}
int StackHandler::rowCount(const QModelIndex &parent) const
{
// Since the stack is not a tree, row count is 0 for any valid parent
return parent.isValid() ? 0 : (m_stackFrames.size() + m_canExpand);
}
int StackHandler::columnCount(const QModelIndex &parent) const
{
return parent.isValid() ? 0 : 5;
}
QVariant StackHandler::data(const QModelIndex &index, int role) const
{
if (!index.isValid() || index.row() >= m_stackFrames.size() + m_canExpand)
return QVariant();
if (index.row() == m_stackFrames.size()) {
if (role == Qt::DisplayRole && index.column() == 0)
return tr("...");
if (role == Qt::DisplayRole && index.column() == 1)
return tr("<More>");
if (role == Qt::DecorationRole && index.column() == 0)
return m_emptyIcon;
return QVariant();
}
const StackFrame &frame = m_stackFrames.at(index.row());
if (role == Qt::DisplayRole) {
switch (index.column()) {
case 0: // Stack frame level
return QString::number(frame.level);
case 1: // Function name
return frame.function;
case 2: // File name
return frame.file.isEmpty() ? frame.from : QFileInfo(frame.file).fileName();
case 3: // Line number
return frame.line;
case 4: // Address
return frame.address;
}
return QVariant();
}
if (role == Qt::ToolTipRole) {
//: Tooltip for variable
return frame.toToolTip();
}
if (role == Qt::DecorationRole && index.column() == 0) {
// Return icon that indicates whether this is the active stack frame
return (index.row() == m_currentIndex) ? m_positionIcon : m_emptyIcon;
}
if (role == Qt::UserRole)
return QVariant::fromValue(frame);
return QVariant();
}
QVariant StackHandler::headerData(int section, Qt::Orientation orientation, int role) const
{
if (orientation == Qt::Horizontal && role == Qt::DisplayRole) {
switch (section) {
case 0: return tr("Level");
case 1: return tr("Function");
case 2: return tr("File");
case 3: return tr("Line");
case 4: return tr("Address");
};
}
return QVariant();
}
Qt::ItemFlags StackHandler::flags(const QModelIndex &index) const
{
if (index.row() >= m_stackFrames.size() + m_canExpand)
return 0;
if (index.row() == m_stackFrames.size())
return QAbstractTableModel::flags(index);
const StackFrame &frame = m_stackFrames.at(index.row());
const bool isValid = (frame.isUsable() && !frame.function.isEmpty())
|| theDebuggerBoolSetting(OperateByInstruction);
return isValid ? QAbstractTableModel::flags(index) : Qt::ItemFlags(0);
}
StackFrame StackHandler::currentFrame() const
{
QTC_ASSERT(m_currentIndex >= 0, return StackFrame());
QTC_ASSERT(m_currentIndex < m_stackFrames.size(), return StackFrame());
return m_stackFrames.at(m_currentIndex);
}
void StackHandler::setCurrentIndex(int level)
{
if (level == m_currentIndex)
return;
// Emit changed for previous frame
QModelIndex i = index(m_currentIndex, 0);
emit dataChanged(i, i);
m_currentIndex = level;
// Emit changed for new frame
i = index(m_currentIndex, 0);
emit dataChanged(i, i);
}
void StackHandler::removeAll()
{
m_stackFrames.clear();
m_currentIndex = 0;
reset();
}
void StackHandler::setFrames(const QList<StackFrame> &frames, bool canExpand)
{
m_canExpand = canExpand;
m_stackFrames = frames;
if (m_currentIndex >= m_stackFrames.size())
m_currentIndex = m_stackFrames.size() - 1;
reset();
}
QList<StackFrame> StackHandler::frames() const
{
return m_stackFrames;
}
bool StackHandler::isDebuggingDebuggingHelpers() const
{
for (int i = m_stackFrames.size(); --i >= 0; )
if (m_stackFrames.at(i).function.startsWith(QLatin1String("qDumpObjectData")))
return true;
return false;
}
////////////////////////////////////////////////////////////////////////
//
// ThreadsHandler
//
////////////////////////////////////////////////////////////////////////
ThreadData::ThreadData(int threadId) :
id(threadId),
address(0),
line(-1)
{
}
void ThreadData::notifyRunning()
{
address = 0;
function.clear();
file.clear();
line = -1;
}
enum { IdColumn, AddressColumn, FunctionColumn, FileColumn, LineColumn, ColumnCount };
ThreadsHandler::ThreadsHandler(QObject *parent) :
QAbstractTableModel(parent),
m_currentIndex(0),
m_positionIcon(QLatin1String(":/debugger/images/location_16.png")),
m_emptyIcon(QLatin1String(":/debugger/images/debugger_empty_14.png"))
{
}
int ThreadsHandler::rowCount(const QModelIndex &parent) const
{
// Since the stack is not a tree, row count is 0 for any valid parent
return parent.isValid() ? 0 : m_threads.size();
}
int ThreadsHandler::columnCount(const QModelIndex &parent) const
{
return parent.isValid() ? 0 : int(ColumnCount);
}
QVariant ThreadsHandler::data(const QModelIndex &index, int role) const
{
if (!index.isValid())
return QVariant();
const int row = index.row();
if (row >= m_threads.size())
return QVariant();
const ThreadData &thread = m_threads.at(row);
if (role == Qt::DisplayRole) {
switch (index.column()) {
case IdColumn:
return thread.id;
case FunctionColumn:
return thread.function;
case FileColumn:
return thread.file;
case LineColumn:
return thread.line >= 0 ? QString::number(thread.line) : QString();
case AddressColumn:
return thread.address > 0 ? QLatin1String("0x") + QString::number(thread.address, 16) : QString();
}
} else if (role == Qt::ToolTipRole) {
if (thread.address == 0)
return tr("Thread: %1").arg(thread.id);
// Stopped
if (thread.file.isEmpty())
return tr("Thread: %1 at %2 (0x%3)").arg(thread.id).arg(thread.function).arg(thread.address, 0, 16);
return tr("Thread: %1 at %2, %3:%4 (0x%5)").
arg(thread.id).arg(thread.function, thread.file).arg(thread.line).arg(thread.address, 0, 16);
} else if (role == Qt::DecorationRole && index.column() == 0) {
// Return icon that indicates whether this is the active stack frame
return (index.row() == m_currentIndex) ? m_positionIcon : m_emptyIcon;
}
return QVariant();
}
QVariant ThreadsHandler::headerData(int section, Qt::Orientation orientation, int role) const
{
if (orientation != Qt::Horizontal || role != Qt::DisplayRole)
return QVariant();
switch (section) {
case IdColumn:
return tr("Thread ID");
case FunctionColumn:
return tr("Function");
case FileColumn:
return tr("File");
case LineColumn:
return tr("Line");
case AddressColumn:
return tr("Address");
}
return QVariant();
}
int ThreadsHandler::currentThreadId() const
{
if (m_currentIndex < 0 || m_currentIndex >= m_threads.size())
return -1;
return m_threads[m_currentIndex].id;
}
void ThreadsHandler::setCurrentThread(int index)
{
if (index == m_currentIndex)
return;
// Emit changed for previous frame
QModelIndex i = ThreadsHandler::index(m_currentIndex, 0);
emit dataChanged(i, i);
m_currentIndex = index;
// Emit changed for new frame
i = ThreadsHandler::index(m_currentIndex, 0);
emit dataChanged(i, i);
}
void ThreadsHandler::setThreads(const QList<ThreadData> &threads)
{
m_threads = threads;
if (m_currentIndex >= m_threads.size())
m_currentIndex = m_threads.size() - 1;
reset();
}
QList<ThreadData> ThreadsHandler::threads() const
{
return m_threads;
}
void ThreadsHandler::removeAll()
{
m_threads.clear();
m_currentIndex = 0;
reset();
}
void ThreadsHandler::notifyRunning()
{
// Threads stopped (that is, address != 0 showing)?
if (m_threads.empty())
return;
if (m_threads.front().address == 0)
return;
const QList<ThreadData>::iterator end = m_threads.end();
for (QList<ThreadData>::iterator it = m_threads.begin(); it != end; ++it)
it->notifyRunning();
emit dataChanged(index(0, 1), index(m_threads.size()- 1, ColumnCount - 1));
}
} // namespace Internal
} // namespace Debugger
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