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/version.hpp>
22 #if BOOST_VERSION < 103300
23 # include <boost/test/detail/nullstream.hpp>
25 # include <boost/test/utils/nullstream.hpp>
29 # define TEMPORARY_DEBUG_MACRO DEBUG
47 static bool match(type a, type b) {
48 return (b <= a || (b == ANY && a > NONE));
52 #ifdef TEMPORARY_DEBUG_MACRO
53 # define DEBUG TEMPORARY_DEBUG_MACRO
54 # undef TEMPORARY_DEBUG_MACRO
58 template <class dtrait,
60 class traits = std::char_traits<charT> >
61 class basic_debugstream : public std::basic_ostream<charT, traits> {
64 typedef typename debug::type Type;
67 : std::basic_ostream<charT, traits>(0), dt(debug::NONE)
70 /// Constructor, sets the debug level to t.
71 explicit basic_debugstream(std::basic_streambuf<charT, traits> * buf)
72 : std::basic_ostream<charT, traits>(buf), dt(debug::NONE)
75 /// Sets the debug level to t.
80 /// Returns the current debug level.
85 /// Returns true if t is part of the current debug level.
86 bool debugging(Type t = debug::ANY) const
88 if (debug::match(dt, t)) return true;
92 /** Returns the no-op stream if t is not part of the
93 current debug level otherwise the real debug stream
95 Use: dbgstream[Debug::INFO] << "Info!\n";
97 std::basic_ostream<charT, traits> & operator[](Type t) {
98 if (debug::match(dt, t))
103 /// The current debug level
105 /// The no-op stream.
106 boost::basic_onullstream<charT, traits> nullstream;
109 typedef basic_debugstream<debug_trait> debugstream;