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secondo/Algebras/Raster2/Displaygrid3.h
2026-01-23 17:03:45 +08:00

106 lines
3.0 KiB
C++

/*
----
This file is part of SECONDO.
Copyright (C) 2004, University in Hagen, Department of Computer Science,
Database Systems for New Applications.
SECONDO 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.
SECONDO 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 SECONDO; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
----
*/
#ifndef RASTER2_DISPLAYGRID3_H
#define RASTER2_DISPLAYGRID3_H
#include "DateTime.h"
#include "DisplayTTY.h"
namespace raster2
{
struct Displaygrid3 : DisplayFunction
{
virtual void Display(ListExpr type, ListExpr value)
{
if(nl->IsAtom(value) &&
nl->AtomType(value) == SymbolType &&
nl->SymbolValue(value) == Symbol::UNDEFINED())
{
cout << Symbol::UNDEFINED();
}
else
{
const std::string formatError = "Incorrect Data Format.";
if(nl->ListLength(value) == 4)
{
bool bError = false;
double x = GetNumeric(nl->First(value), bError);
if(bError)
{
throw std::runtime_error(formatError);
}
double y = GetNumeric(nl->Second(value), bError);
if(bError)
{
throw std::runtime_error(formatError);
}
double length = GetNumeric(nl->Third(value), bError);
if(bError)
{
throw std::runtime_error(formatError);
}
ListExpr durationListExpr = nl->Fourth(value);
if(nl->ListLength(durationListExpr) == 2 &&
nl->AtomType(nl->First(durationListExpr)) == SymbolType &&
nl->SymbolValue(nl->First(durationListExpr)) ==
Duration::BasicType() &&
nl->ListLength(nl->Second(durationListExpr)) == 2)
{
ListExpr durationValuesListExpr = nl->Second(durationListExpr);
int days = nl->IntValue(nl->First(durationValuesListExpr));
int milliseconds = nl->IntValue(nl->Second(durationValuesListExpr));
cout << "grid3: (x = " << x << ", y = " << y <<
", length = " << length << ", duration = (" << days <<
" days, " << milliseconds << " milliseconds))";
}
else
{
throw std::runtime_error(formatError);
}
}
else
{
throw std::runtime_error(formatError);
}
}
}
};
}
#endif /* RASTER2_DISPLAYGRID3_H */