4 * This file is part of LyX, the document processor.
5 * Licence details can be found in the file COPYING.
7 * \author Lars Gullik Bjønnes
9 * Full author contact details are available in file CREDITS.
12 #ifndef DEBUG_STREAM_HPP
13 #define DEBUG_STREAM_HPP
17 #include <boost/test/detail/nullstream.hpp>
33 static bool match(type a, type b) {
34 return (b <= a || (b == ANY && a > NONE));
39 template <class dtrait,
41 class traits = std::char_traits<charT> >
42 class basic_debugstream : public std::basic_ostream<charT, traits> {
45 typedef typename debug::type Type;
48 : std::basic_ostream<charT, traits>(0), dt(debug::NONE)
51 /// Constructor, sets the debug level to t.
52 explicit basic_debugstream(std::basic_streambuf<charT, traits> * buf)
53 : std::basic_ostream<charT, traits>(buf), dt(debug::NONE)
56 /// Sets the debug level to t.
61 /// Returns the current debug level.
66 /// Returns true if t is part of the current debug level.
67 bool debugging(Type t = debug::ANY) const
69 if (debug::match(dt, t)) return true;
73 /** Returns the no-op stream if t is not part of the
74 current debug level otherwise the real debug stream
76 Use: dbgstream[Debug::INFO] << "Info!\n";
78 std::basic_ostream<charT, traits> & operator[](Type t) {
79 if (debug::match(dt, t))
84 /// The current debug level
87 boost::basic_onullstream<charT, traits> nullstream;
90 typedef basic_debugstream<debug_trait> debugstream;