85 lines
2.8 KiB
Java
85 lines
2.8 KiB
Java
//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
|
|
|
|
|
|
package viewer.hoese.algebras;
|
|
|
|
import sj.lang.ListExpr;
|
|
import viewer.*;
|
|
import viewer.hoese.*;
|
|
import tools.Reporter;
|
|
|
|
|
|
/**
|
|
* The displayclass of Rose algebras coordinate-type .
|
|
*/
|
|
public class Dsplcoordinate extends DsplGeneric {
|
|
double koord;
|
|
|
|
/**
|
|
* Scans the numeric representation of a coordinate
|
|
* @param v the numeric value
|
|
* @return true if no errors occur
|
|
* @see sj.lang.ListExpr
|
|
* @see <a href="Dsplcoordinatesrc.html#ScanValue">Source</a>
|
|
*/
|
|
private boolean ScanValue (ListExpr v) {
|
|
if (v.isAtom()) {
|
|
if (v.atomType() != ListExpr.INT_ATOM) {
|
|
Reporter.writeError("Error: No correct coordinate expression: rat or int-type needed");
|
|
return false;
|
|
}
|
|
koord = (double)v.intValue();
|
|
return true;
|
|
}
|
|
else {
|
|
if (v.listLength() != 5) {
|
|
Reporter.writeError("Error: No correct rat expression: 5 elements needed");
|
|
return false;
|
|
}
|
|
if ((v.first().atomType() != ListExpr.SYMBOL_ATOM) || (v.second().atomType()
|
|
!= ListExpr.INT_ATOM) || (v.third().atomType() != ListExpr.INT_ATOM)
|
|
|| (v.fourth().atomType() != ListExpr.SYMBOL_ATOM) || (v.fifth().atomType()
|
|
!= ListExpr.INT_ATOM)) {
|
|
Reporter.writeError("Error: No correct rat expression: wrong types");
|
|
return false;
|
|
}
|
|
if ((!v.first().symbolValue().equals("rat")) || (!v.fourth().symbolValue().equals("/"))) {
|
|
Reporter.writeError("Error: No correct rat expression: wrong symbols");
|
|
return false;
|
|
}
|
|
koord = (double)v.second().intValue() + (double)v.third().intValue()/(double)v.fifth().intValue();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
public void init (String name, int nameWidth, int indent,
|
|
ListExpr type, ListExpr value, QueryResult qr) {
|
|
String name1 = extendString(name,nameWidth, indent);
|
|
if (!ScanValue(value))
|
|
qr.addEntry("(" + name1 + ":" + koord + ")");
|
|
else
|
|
qr.addEntry(name1 + ":" + koord);
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
|