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/*******************************************************************************
* Copyright (c) 2009 Elliott Baron
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Elliott Baron - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.codan.extension;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.eclipse.cdt.codan.extension.Minterm.Value;
import org.eclipse.cdt.core.dom.ast.IVariable;
public class ESTruthTable implements ITruthTable<IVariable> {
private List<Minterm<IVariable>> minterms;
private List<IVariable> variables;
public ESTruthTable(Set<ExecutionState> es) {
minterms = new ArrayList<Minterm<IVariable>>();
variables = new ArrayList<IVariable>();
for (ExecutionState e : es) {
for (ExecutionStateClause c : e.getClauses()) {
IVariable var = c.getVariable();
if (!variables.contains(var)) {
variables.add(var);
}
}
}
// Initialize with Don't Cares
for (int i = 0; i < es.size(); i++) {
Map<IVariable, Value> values = new HashMap<IVariable, Value>();
for (IVariable var : variables) {
values.put(var, Value.DONTCARE);
}
minterms.add(new Minterm<IVariable>(values));
}
// Set actual truth values
Iterator<ExecutionState> it = es.iterator();
for (int i = 0; i < es.size(); i++) {
Minterm<IVariable> term = minterms.get(i);
ExecutionState e = it.next();
for (ExecutionStateClause c : e.getClauses()) {
term.setValue(c.getVariable(), c.isTrue() ? Value.TRUE : Value.FALSE);
}
}
}
public List<Minterm<IVariable>> getMinterms() {
return minterms;
}
public List<IVariable> getVariables() {
return variables;
}
@Override
public String toString() {
StringBuffer buf = new StringBuffer();
for (IVariable var : variables) {
buf.append(var.getName());
buf.append(" ");
}
buf.append("\n");
for (Minterm<IVariable> term : minterms) {
for (IVariable var : variables) {
buf.append(term.getValue(var));
buf.append(" ");
}
buf.append("\n");
}
return buf.toString();
}
}
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