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// file : frontend-elements/diagnostic.hxx
// author : Boris Kolpackov <boris@kolpackov.net>
// copyright : Copyright (c) 2005-2010 Boris Kolpackov
// license : GNU GPL v2 + exceptions; see accompanying LICENSE file
#ifndef FRONTEND_ELEMENTS_DIAGNOSTIC_HXX
#define FRONTEND_ELEMENTS_DIAGNOSTIC_HXX
#include <frontend-elements/types.hxx>
#include <ostream>
#include <sstream>
namespace FrontendElements
{
namespace Diagnostic
{
struct Kind
{
virtual
~Kind ()
{
}
Kind (String const& id)
: id_ (id)
{
}
Char const*
id () const
{
return id_.c_str ();
}
virtual std::ostream&
print (std::ostream& o) const = 0;
private:
String id_;
};
struct Error: Kind
{
virtual
~Error ()
{
}
Error (String const& id)
: Kind (id)
{
}
virtual std::ostream&
print (std::ostream& o) const
{
return o << "error " << id ();
}
};
struct Warning: Kind
{
virtual
~Warning ()
{
}
Warning (String const& id)
: Kind (id)
{
}
virtual std::ostream&
print (std::ostream& o) const
{
return o << "warning " << id ();
}
};
struct Remark: Kind
{
virtual
~Remark ()
{
}
Remark (String const& id)
: Kind (id)
{
}
virtual std::ostream&
print (std::ostream& o) const
{
return o << "remark " << id ();
}
};
struct Info: Kind
{
virtual
~Info ()
{
}
Info (String const& id)
: Kind (id)
{
}
virtual std::ostream&
print (std::ostream& o) const
{
return o << "info " << id ();
}
};
//
//
//
namespace Bits
{
class Mediator;
}
class Record: public NonCopyable
{
public:
Record (Kind const& kind,
String const& file,
UnsignedLong line,
UnsignedLong char_)
: kind_ (&kind),
file_p_ (true),
file_ (file),
line_p_ (true),
line_ (line),
char_p_ (true),
char__ (char_)
{
}
Record (Kind const& kind,
String const& file,
UnsignedLong line)
: kind_ (&kind),
file_p_ (true),
file_ (file),
line_p_ (true),
line_ (line),
char_p_ (false)
{
}
private:
Record ()
: kind_ (0),
file_p_ (false),
line_p_ (false),
char_p_ (false)
{
}
Void
kind (Kind const& kind)
{
kind_ = &kind;
}
friend class Bits::Mediator;
friend Record&
operator<< (Bits::Mediator const&, Kind const&);
public:
class Undefined {};
Kind const&
kind () const
{
return *kind_;
}
Char const*
file () const
{
if (file_p_) return file_.c_str ();
throw Undefined ();
}
UnsignedLong
line () const
{
if (line_p_) return line_;
throw Undefined ();
}
Boolean
char_p () const
{
return char_p_;
}
UnsignedLong
char_ () const
{
if (char_p_) return char__;
throw Undefined ();
}
String
text () const
{
return o_.str ();
}
public:
Record&
operator<< (Char const* s)
{
if (!char_p_ && !line_p_ && !file_p_)
{
file_ = s;
file_p_ = true;
}
else
o_ << s;
return *this;
}
//@@ Make it Int.
//
Record&
operator<< (UnsignedLong l)
{
if (file_p_ && !char_p_)
{
if (line_p_)
{
char__ = l;
char_p_ = true;
}
else
{
line_ = l;
line_p_ = true;
}
}
else
o_ << l;
return *this;
}
template <typename X>
Record&
operator<< (X const& x)
{
o_ << x;
return *this;
}
private:
Kind const* kind_;
Boolean file_p_;
String file_;
Boolean line_p_;
UnsignedLong line_;
Boolean char_p_;
UnsignedLong char__;
std::ostringstream o_;
};
//
//
//
class Log: public NonCopyable
{
public:
virtual
~Log ()
{
}
public:
virtual Log&
operator<< (Record const& r);
public:
static Log&
instance ();
};
//
//
//
class Stream;
namespace Bits
{
class Mediator
{
public:
Mediator (Stream& s)
: s_ (s)
{
}
~Mediator ();
Stream& s_;
mutable Record r_;
};
}
class Stream: public NonCopyable
{
public:
Stream (Log& l = Log::instance ())
: log_ (l)
{
}
public:
Stream&
operator<< (Record const& r)
{
log_ << r;
return *this;
}
friend Record&
operator<< (Bits::Mediator const& m, Kind const& k)
{
Record& r (m.r_);
r.kind (k);
return r;
}
private:
Log& log_;
};
}
}
#include <frontend-elements/diagnostic.ixx>
#include <frontend-elements/diagnostic.txx>
#endif // FRONTEND_ELEMENTS_DIAGNOSTIC_HXX
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