/* $RCSfile$
* $Author$
* $Date$
* $Revision$
*
* Copyright (C) 2004-2007 The Chemistry Development Kit (CDK) project
*
* Contact: cdk-devel@lists.sourceforge.net
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This program 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.openscience.cdk.isomorphism.matchers.smarts;
import org.openscience.cdk.CDKConstants;
import org.openscience.cdk.interfaces.IAtom;
/**
* This matcher checks the number of implicit hydrogens of the Atom.
*
* @cdk.module smarts
* @cdk.githash
* @cdk.keyword SMARTS
*/
public class ImplicitHCountAtom extends SMARTSAtom {
private static final long serialVersionUID = 6752937431492584928L;
/**
* Creates a new instance
*
* @param hCount
*/
public ImplicitHCountAtom(int hCount) {
this.setHydrogenCount(hCount);
}
/**
* Returns the implicit hydrogen count of an atom
*
* @param atom
* @return
*/
private int getIMPH(IAtom atom){
if (atom.getHydrogenCount() == CDKConstants.UNSET) return 0;
else return atom.getHydrogenCount();
}
/* (non-Javadoc)
* @see org.openscience.cdk.isomorphism.matchers.smarts.SMARTSAtom#matches(org.openscience.cdk.interfaces.IAtom)
*/
public boolean matches(IAtom atom) {
return (getIMPH(atom)!=0 && getIMPH(atom)==getIMPH(this));
}
/* (non-Javadoc)
* @see org.openscience.cdk.PseudoAtom#toString()
*/
public String toString() {
StringBuffer s = new StringBuffer();
s.append("ImplicitHCountAtom(");
s.append(this.hashCode() + ", ");
s.append("IH:" + getIMPH(this));
s.append(")");
return s.toString();
}
}