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

/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (info@qt.nokia.com)
**
**
** 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
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**************************************************************************/

#include "breakpoint.h"

#include "utils/qtcassert.h"

#include <QtCore/QByteArray>
#include <QtCore/QDebug>

namespace Debugger {
namespace Internal {

//////////////////////////////////////////////////////////////////
//
// BreakpointId
//
//////////////////////////////////////////////////////////////////

QDebug operator<<(QDebug d, const BreakpointId &id)
{
    d << qPrintable(id.toString());
    return d;
}

QString BreakpointId::toString() const
{
    if (!isValid())
        return "<invalid bkpt>";
    if (isMinor())
        return QString("%1.%2").arg(m_majorPart).arg(m_minorPart);
    return QString::number(m_majorPart);
}

BreakpointId BreakpointId::parent() const
{
    QTC_ASSERT(isMinor(), return BreakpointId());
    return BreakpointId(m_majorPart, 0);
}

BreakpointId BreakpointId::child(int row) const
{
    QTC_ASSERT(isMajor(), return BreakpointId());
    return BreakpointId(m_majorPart, row + 1);
}

//////////////////////////////////////////////////////////////////
//
// BreakpointParameters
//
//////////////////////////////////////////////////////////////////

/*!
    \class Debugger::Internal::BreakpointParameters

    Data type holding the parameters of a breakpoint.
*/

BreakpointParameters::BreakpointParameters(BreakpointType t)
  : type(t), enabled(true), pathUsage(BreakpointPathUsageEngineDefault),
    ignoreCount(0), lineNumber(0), address(0), size(0),
    bitpos(0), bitsize(0), threadSpec(-1),
    tracepoint(false)
{}

BreakpointParts BreakpointParameters::differencesTo
    (const BreakpointParameters &rhs) const
{
    BreakpointParts parts = BreakpointParts();
    if (type != rhs.type)
        parts |= TypePart;
    if (enabled != rhs.enabled)
        parts |= EnabledPart;
    if (pathUsage != rhs.pathUsage)
        parts |= PathUsagePart;
    if (fileName != rhs.fileName)
        parts |= FileAndLinePart;
    if (!conditionsMatch(rhs.condition))
        parts |= ConditionPart;
    if (ignoreCount != rhs.ignoreCount)
        parts |= IgnoreCountPart;
    if (lineNumber != rhs.lineNumber)
        parts |= FileAndLinePart;
    if (address != rhs.address)
        parts |= AddressPart;
    if (threadSpec != rhs.threadSpec)
        parts |= ThreadSpecPart;
    if (functionName != rhs.functionName)
        parts |= FunctionPart;
    if (tracepoint != rhs.tracepoint)
        parts |= TracePointPart;
    if (module != rhs.module)
        parts |= ModulePart;
    if (command != rhs.command)
        parts |= CommandPart;
    return parts;
}

bool BreakpointParameters::equals(const BreakpointParameters &rhs) const
{
    return !differencesTo(rhs);
}

bool BreakpointParameters::conditionsMatch(const QByteArray &other) const
{
    // Some versions of gdb "beautify" the passed condition.
    QByteArray s1 = condition;
    s1.replace(' ', "");
    QByteArray s2 = other;
    s2.replace(' ', "");
    return s1 == s2;
}

QString BreakpointParameters::toString() const
{
    QString result;
    QTextStream ts(&result);
    ts << "Type: " << type;
    switch (type) {
    case BreakpointByFileAndLine:
        ts << " FileName: " << fileName << ':' << lineNumber
           << " PathUsage: " << pathUsage;
        break;
    case BreakpointByFunction:
        ts << " FunctionName: " << functionName;
        break;
    case BreakpointByAddress:
    case WatchpointAtAddress:
        ts << " Address: " << address;
        break;
    case WatchpointAtExpression:
        ts << " Expression: " << expression;
        break;
    case BreakpointAtThrow:
    case BreakpointAtCatch:
    case BreakpointAtMain:
    case BreakpointAtFork:
    case BreakpointAtExec:
    //case BreakpointAtVFork:
    case BreakpointAtSysCall:
    case UnknownType:
        break;
    }
    ts << (enabled ? " [enabled]" : " [disabled]");
    if (!condition.isEmpty())
        ts << " Condition: " << condition;
    if (ignoreCount)
        ts << " IgnoreCount: " << ignoreCount;
    if (tracepoint)
        ts << " [tracepoint]";
    if (!module.isEmpty())
        ts << " Module: " << module;
    if (!command.isEmpty())
        ts << " Command: " << command;
    return result;
}

//////////////////////////////////////////////////////////////////
//
// BreakpointResponse
//
//////////////////////////////////////////////////////////////////

/*!
    \class Debugger::Internal::BreakpointResponse

    This is what debuggers produce in response to the attempt to
    insert a breakpoint. The data might differ from the requested bits.
*/

BreakpointResponse::BreakpointResponse()
{
    number = 0;
    subNumber = 0;
    pending = true;
    multiple = false;
    correctedLineNumber = 0;
}

QString BreakpointResponse::toString() const
{
    QString result = BreakpointParameters::toString();
    QTextStream ts(&result);
    ts << " Number: " << number;
    if (subNumber)
        ts << "." << subNumber;
    if (pending)
        ts << " [pending]";
    if (!fullName.isEmpty())
        ts << " FullName: " << fullName;
    if (!functionName.isEmpty())
        ts << " Function: " << functionName;
    if (multiple)
        ts << " Multiple: " << multiple;
    if (!extra.isEmpty())
        ts << " Extra: " << extra;
    if (correctedLineNumber)
        ts << " CorrectedLineNumber: " << correctedLineNumber;
    ts << ' ';
    return result + BreakpointParameters::toString();
}

void BreakpointResponse::fromParameters(const BreakpointParameters &p)
{
    BreakpointParameters::operator=(p);
    number = 0;
    subNumber = 0;
    fullName.clear();
    multiple = false;
    extra.clear();
    correctedLineNumber = 0;
}

} // namespace Internal
} // namespace Debugger