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/***************************************************************************
copyright : (C) 2006 by David Nolden
email : david.nolden.kdevelop@art-master.de
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#ifndef __COMPLETIONDEBUG_H__
#define __COMPLETIONDEBUG_H__
///With verbose shut on, the whole type-resolution-process is nicely traced for easy debugging(at cost of speed).
//#define VERBOSE
//#define VERBOSEMAJOR
///When defined, a backtrace is printed the first time the maximum depth is reached for the first time.
//#define DEPTHBACKTRACE
#include <qstringlist.h>
#include <kdebug.h>
namespace CompletionDebug {
template <class StreamType>
class KDDebugState {
private:
StreamType m_stream;
kndbgstream m_nstream;
QStringList m_prefixStack;
int m_counter;
int m_depth;
bool m_enabled;
bool m_hadWarning;
public:
typedef StreamType KStreamType;
KDDebugState();
KDDebugState( StreamType stream ) : m_stream( stream ), m_counter( 0 ), m_depth( 0 ), m_enabled( true ), m_hadWarning( false ) {}
void push( const QString & txt ) {
m_prefixStack.push_back( txt );
pushDepth();
}
void pop() {
m_prefixStack.pop_back();
popDepth();
};
inline void pushDepth() {
m_depth++;
}
inline void popDepth() {
m_depth--;
}
bool hadWarning() {
return m_hadWarning;
}
void setHadWarning( bool had ) {
m_hadWarning = had;
}
StreamType& dbg() {
#ifndef VERBOSE
if ( !m_enabled )
return m_nstream;
#endif
m_stream << "(" << m_counter << ")";
for ( QStringList::iterator it = m_prefixStack.begin(); it != m_prefixStack.end() ; ++it )
m_stream << *it;
m_counter++;
return m_stream;
}
void setState( bool enabled ) {
m_enabled = enabled;
}
bool state() {
return m_enabled;
}
#ifndef NDEBUG
void outputPrefix( kdbgstream& target ) {
target << "(" << m_counter << ")";
for ( QStringList::iterator it = m_prefixStack.begin(); it != m_prefixStack.end() ; ++it )
target << *it;
m_counter++;
}
#endif
void clearCounter() {
m_counter = 0;
}
int depth() {
return m_depth;
}
};
#ifndef NDEBUG
template <>
KDDebugState<kdbgstream>::KDDebugState();
#endif
template <>
KDDebugState<kndbgstream>::KDDebugState();
#if defined(VERBOSE) && !defined(NDEBUG)
typedef KDDebugState<kdbgstream> DBGStreamType;
#else
typedef KDDebugState<kndbgstream> DBGStreamType;
#endif
///Class to help indent the debug-output correctly
extern DBGStreamType dbgState;
extern const int completionMaxDepth;
class LogDebug {
private:
DBGStreamType& m_state;
int m_max;
public:
LogDebug( const char* prefix = "#", int max = completionMaxDepth, DBGStreamType& st = dbgState ) : m_state( st ), m_max( max ) {
m_state.push( prefix );
};
~LogDebug() {
m_state.pop();
}
DBGStreamType::KStreamType& dbg() {
return m_state.dbg();
}
int depth() {
return m_state.depth();
}
operator bool() {
bool r = depth() < m_max;
if ( !r && !m_state.hadWarning() ) {
m_state.setHadWarning( true );
dbg() << "recursion is too deep" << endl;
#ifdef DEPTHBACKTRACE
kdDebug( 9007 ) << kdBacktrace() << endl;
#endif
}
return r;
}
};
///does not care about the logging, but still counts the depth
class DepthDebug {
DBGStreamType& m_state;
int m_max;
public:
DepthDebug( const char* prefix = "#", int max = completionMaxDepth, DBGStreamType& st = dbgState ) : m_state( st ), m_max( max ) {
Q_UNUSED( prefix );
m_state.pushDepth();
};
~DepthDebug() {
m_state.popDepth();
}
kndbgstream dbg() {
return kndDebug();
}
int depth() {
return m_state.depth();
}
operator bool() {
bool r = depth() < m_max;
if ( !r && !m_state.hadWarning() ) {
m_state.setHadWarning( true );
dbg() << "recursion is too deep" << endl;
#ifdef DEPTHBACKTRACE
kdDebug( 9007 ) << kdBacktrace() << endl;
#endif
}
return r;
}
};
#ifndef VERBOSEMAJOR
#define ifVerboseMajor(x) /**/
#else
#define ifVerboseMajor(x) x
#endif
bool dbgActive();
#ifdef VERBOSE
typedef LogDebug Debug;
DBGStreamType::KStreamType& dbg();
#define ifVerbose( x) {if( dbgActive() ) {x;}}
#else
DBGStreamType::KStreamType& dbg();
typedef DepthDebug Debug;
#define ifVerbose(x) /**/
#endif
#ifndef NDEBUG
kdbgstream dbgMajor();
#else
kndbgstream dbgMajor();
#endif
}
#endif
// kate: indent-mode csands; tab-width 2;
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