4d17db19f8
- Use QDebugStateSaver to restore space setting in stream operators instead of returning dbg.space() which breaks formatting on streams that already have nospace() set. - Fix some single character string constants, streamline code. Change-Id: I18ae7324b172ea801aa9b5fe56ddf6fe527fdde9 Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>
84 lines
2.6 KiB
C++
84 lines
2.6 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the Qt Mobility Components.
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**
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** $QT_BEGIN_LICENSE:LGPL21$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef TRACE_H
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#define TRACE_H
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#include <QDebug>
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#define ENABLE_TRACE
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//#define VERBOSE_TRACE
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namespace Trace {
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class NullDebug
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{
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public:
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template <typename T>
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NullDebug &operator<<(const T &) { return *this; }
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};
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inline NullDebug nullDebug() { return NullDebug(); }
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template <typename T>
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struct PtrWrapper
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{
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PtrWrapper(const T *ptr) : m_ptr(ptr) { }
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const T *const m_ptr;
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};
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} // namespace Trace
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template <typename T>
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inline QDebug &operator<<(QDebug &debug, const Trace::PtrWrapper<T> &wrapper)
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{
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QDebugStateSaver saver(debug);
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debug.nospace() << '[' << static_cast<const void *>(wrapper.m_ptr) << ']';
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return debug;
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}
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#ifdef ENABLE_TRACE
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inline QDebug qtTrace() { return qDebug() << "[qmlvideofx]"; }
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# ifdef VERBOSE_TRACE
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inline QDebug qtVerboseTrace() { return qtTrace(); }
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# else
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inline Trace::NullDebug qtVerboseTrace() { return Trace::nullDebug(); }
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# endif
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#else
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inline Trace::NullDebug qtTrace() { return Trace::nullDebug(); }
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inline Trace::NullDebug qtVerboseTrace() { return Trace::nullDebug(); }
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#endif
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#endif // TRACE_H
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