diff options
| author | Kai Koehne <kai.koehne@digia.com> | 2014-01-09 15:38:17 +0100 |
|---|---|---|
| committer | The Qt Project <gerrit-noreply@qt-project.org> | 2014-01-21 14:58:03 +0100 |
| commit | b8a38a6737acd670d92197ca5b009590d9fd8a9c (patch) | |
| tree | 1b01d7a85a6f35cd420e3cef1bd50490988d7058 /src/corelib/global/qlogging.h | |
| parent | b152b425f74788b2f2845fb7d1a5032d86b8746d (diff) | |
Allow printf style for qCDebug, qCWarning, qCCritical macros
Add support for using qCDebug and friends in the 'printf style' way.
This allows an almost mechanical conversion of existing qDebug, qWarning,
qCritical macros, and allows avoiding the size overhead the streaming
style incurs (mostly due to inlined QDebug code).
To handle this gracefully we require variadic macros (part of
C++11/C99). For compilers not supporting variadic macros we fall back
to checking the category in QMessageLogger.
[ChangeLog][QtCore][Logging] Allow qCDebug macros to be used in a printf
style.
Change-Id: I5a8fb135dca504e1d621bb67bf4b2a50c73d41b9
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Diffstat (limited to 'src/corelib/global/qlogging.h')
| -rw-r--r-- | src/corelib/global/qlogging.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/corelib/global/qlogging.h b/src/corelib/global/qlogging.h index 5ae1fb3205..6d651ee8a0 100644 --- a/src/corelib/global/qlogging.h +++ b/src/corelib/global/qlogging.h @@ -82,6 +82,8 @@ private: friend class QDebug; }; +class QLoggingCategory; + class Q_CORE_EXPORT QMessageLogger { Q_DISABLE_COPY(QMessageLogger) @@ -98,6 +100,15 @@ public: void warning(const char *msg, ...) const Q_ATTRIBUTE_FORMAT_PRINTF(2, 3); void critical(const char *msg, ...) const Q_ATTRIBUTE_FORMAT_PRINTF(2, 3); + typedef QLoggingCategory &(*CategoryFunction)(); + + void debug(const QLoggingCategory &cat, const char *msg, ...) const Q_ATTRIBUTE_FORMAT_PRINTF(3, 4); + void debug(CategoryFunction catFunc, const char *msg, ...) const Q_ATTRIBUTE_FORMAT_PRINTF(3, 4); + void warning(const QLoggingCategory &cat, const char *msg, ...) const Q_ATTRIBUTE_FORMAT_PRINTF(3, 4); + void warning(CategoryFunction catFunc, const char *msg, ...) const Q_ATTRIBUTE_FORMAT_PRINTF(3, 4); + void critical(const QLoggingCategory &cat, const char *msg, ...) const Q_ATTRIBUTE_FORMAT_PRINTF(3, 4); + void critical(CategoryFunction catFunc, const char *msg, ...) const Q_ATTRIBUTE_FORMAT_PRINTF(3, 4); + #ifndef Q_CC_MSVC Q_NORETURN #endif @@ -105,8 +116,14 @@ public: #ifndef QT_NO_DEBUG_STREAM QDebug debug() const; + QDebug debug(const QLoggingCategory &cat) const; + QDebug debug(CategoryFunction catFunc) const; QDebug warning() const; + QDebug warning(const QLoggingCategory &cat) const; + QDebug warning(CategoryFunction catFunc) const; QDebug critical() const; + QDebug critical(const QLoggingCategory &cat) const; + QDebug critical(CategoryFunction catFunc) const; QNoDebug noDebug() const Q_DECL_NOTHROW; #endif // QT_NO_DEBUG_STREAM |