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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.List;
public class ExecutionState {
private List<ExecutionStateClause> clauses;
private boolean top;
private boolean bottom;
public ExecutionState() {
clauses = new ArrayList<ExecutionStateClause>();
}
public void addClause(ExecutionStateClause node) {
setTop(false);
setBottom(false);
clauses.add(node);
}
public void removeClause(ExecutionStateClause node) {
clauses.remove(node);
if (clauses.size() == 0) {
setTop(true);
setBottom(false);
}
}
public ExecutionStateClause[] getClauses() {
return clauses.toArray(new ExecutionStateClause[clauses.size()]);
}
public boolean isTop() {
return top;
}
public boolean isBottom() {
return bottom;
}
public void setTop(boolean top) {
this.top = top;
}
public void setBottom(boolean bottom) {
this.bottom = bottom;
}
@Override
public String toString() {
String ret;
if (top) {
ret = "[TOP]";
}
else if (bottom) {
ret = "[BOTTOM]";
}
else {
StringBuffer buf = new StringBuffer();
if (clauses.size() > 0) {
for (ExecutionStateClause c : clauses) {
if (!c.isTrue()) {
buf.append("NOT ");
}
buf.append(c.getNode().getRawSignature());
buf.append(" AND ");
}
buf.delete(buf.length() - 5 /* " AND ".length() */, buf.length());
}
ret = buf.toString();
}
return ret;
}
}
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