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// This file is part of the uSTL library, an STL implementation.

//

// Copyright (c) 2005-2009 by Mike Sharov <msharov@users.sourceforge.net>

// This file is free software, distributed under the MIT License.

#include "ustdxept.h"

#include "mistream.h"

#include "mostream.h"

#include "strmsize.h"

#include "uiosfunc.h"

#include "uspecial.h"

namespace ustl {

//----------------------------------------------------------------------

/// \p arg contains a description of the error.

error_message::error_message (const char* arg) throw()

: m_Arg ()

{

    USTL_TRY { m_Arg = arg; } USTL_CATCH_ALL

    set_format (xfmt_ErrorMessage);

}

/// Virtual destructor

error_message::~error_message (void) throw()

{

}

/// Returns a descriptive error message. fmt="%s: %s"

void error_message::info (string& msgbuf, const char* fmt) const throw()

{

    if (!fmt) fmt = "%s: %s";

    USTL_TRY { msgbuf.format (fmt, name(), m_Arg.cdata()); } USTL_CATCH_ALL

}

/// Reads the object from stream \p is.

void error_message::read (istream& is)

{

    exception::read (is);

    is >> m_Arg >> ios::align();

}

/// Writes the object to stream \p os.

void error_message::write (ostream& os) const

{

    exception::write (os);

    os << m_Arg << ios::align();

}

/// Returns the size of the written object.

size_t error_message::stream_size (void) const

{

    return (exception::stream_size() + Align (stream_size_of (m_Arg)));

}

} // namespace ustl