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DispBuffer.h
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1998-12-06
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// $Id: DispBuffer.h,v 1.8.6.1 1998/12/06 12:59:18 zeller Exp $
// Filter display information from GDB output
// Copyright (C) 1995 Technische Universitaet Braunschweig, Germany.
// Written by Dorothea Luetkehaus <luetke@ips.cs.tu-bs.de>.
//
// This file is part of DDD.
//
// DDD 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.
//
// DDD is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with DDD -- see the file COPYING.
// If not, write to the Free Software Foundation, Inc.,
// 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// DDD is the data display debugger.
// For details, see the DDD World-Wide-Web page,
// `http://www.cs.tu-bs.de/softech/ddd/',
// or send a mail to the DDD developers <ddd@ips.cs.tu-bs.de>.
#ifndef _DDD_DispBuffer_h
#define _DDD_DispBuffer_h
#ifdef __GNUG__
#pragma interface
#endif
//-----------------------------------------------------------------------------
// A `DispBuffer' filters display information from GDB output
//-----------------------------------------------------------------------------
// Misc includes
#include "bool.h"
#include "strclass.h"
class DispBuffer {
// What was in the previous answer?
enum ReadState {Null, DisplayPart, DisplayFound};
string display_buffer;
string answer_buffer; // possible parts of display output
ReadState already_read;
public:
// Constructor
DispBuffer () :
display_buffer(""),
answer_buffer(""),
already_read(Null)
{}
// Filter `display' output from ANSWER and buffer them.
// After returning, ANSWER contains non-display output.
void filter (string& answer);
// The answer has ended; return buffered output.
string answer_ended ();
// Were there any displays in the last output?
bool displays_found () const { return display_buffer != ""; }
bool partial_displays_found () const
{
return !displays_found() && already_read == DisplayPart;
}
// Return any displays found
string get_displays () const { return display_buffer; }
// Call before filtering next answer
void clear () {
display_buffer = "";
answer_buffer = "";
already_read = Null;
}
};
#endif // _DDD_DispBuffer_h
// DON'T ADD ANYTHING BEHIND THIS #endif