SchemaVariableModifierSet.java :  » Testing » KeY » de » uka » ilkd » key » parser » Java Open Source

// This file is part of KeY - Integrated Deductive Software Design
// Copyright (C) 2001-2007 Universitaet Karlsruhe, Germany
//                         Universitaet Koblenz-Landau, Germany
//                         Chalmers University of Technology, Sweden
//
// The KeY system is protected by the GNU General Public License. 
// See LICENSE.TXT for details.
//
//

package de.uka.ilkd.key.parser;


/**
 *
 */
public abstract class SchemaVariableModifierSet {

    private boolean strict = false;
    private boolean rigid  = false;
    private boolean list   = false;
    
    public boolean list () {
        return list;
    }
    protected boolean listEnabled () {
        return false;
    }
    public boolean rigid () {
        return rigid;
    }
    protected boolean rigidEnabled () {
        return false;
    }
    public boolean strict () {
        return strict;
    }
    protected boolean strictEnabled () {
        return false;
    }
    
    /**
     * @return <code>true</code> iff <code>option</code> is a valid modifier
     *         for the considered kind of schema variables
     */
    public boolean addModifier(String option) {
        if ( "strict".equals ( option ) ) {
            return addStrict ();
        } else if ( "rigid".equals ( option ) ) {
            return addRigid ();
        } else if ( "list".equals ( option ) ) {
            return addList ();
        }

        return false;
    }
        
    public boolean addList () {
        this.list = true;
        return listEnabled ();
    }
    public boolean addRigid () {
        this.rigid = true;
        return rigidEnabled ();
    }
    public boolean addStrict () {
        this.strict = true;
        return strictEnabled ();
    }

    public static class ProgramSV extends SchemaVariableModifierSet {
        protected boolean listEnabled () {
            return true;
        }
    }

    public static class TermSV extends SchemaVariableModifierSet {        
        protected boolean rigidEnabled () {
            return true;
        }
        protected boolean strictEnabled () {
            return true;
        }
    }

    public static class FormulaSV extends SchemaVariableModifierSet {
        protected boolean rigidEnabled () {
            return true;
        }
    }

    public static class VariableSV extends SchemaVariableModifierSet {}

    public static class SkolemTermSV extends SchemaVariableModifierSet {}
    
    public static class ListSV extends SchemaVariableModifierSet {
        protected boolean listEnabled() {
            return true;
        }
    }
}