public String convert(KripkeStructureModel kripkeModel) {
StringBuffer buffer = new StringBuffer();
buffer.append("(");
ContextState initial = kripkeModel.creatFakeInitialState();
buffer.append(convertInitialState(initial));
buffer.append("\n,\n(");
buffer.append(this.convertTransitions(kripkeModel));
buffer.append(")\n,\n");
buffer.append("{true}");
buffer.append("\n)");
return buffer.toString();
}
public Set<Property> check(KripkeStructureModel kripkeModel, Set<Property> properties) {
Context context = new Context();
Transitionsystem transitionSystem = null;
Formula[] formulas = null;
if (!kripkeModel.hasExceptionalState()) {
return null;
}
try {
StringReader stringReader = new StringReader(this.convert(kripkeModel));
BufferedReader system = new BufferedReader(stringReader);
transitionSystem = new Parser(system).parseTransitionsystem(context);
system.close();
transitionSystem.computeReachable();
} catch (ParseException e) {
System.out.println("ParseException in system: " + e.toString());
} catch (IOException e) {
System.out.println("Could not access file .");
}
try {
StringBuffer buffer = new StringBuffer();
Iterator<Property> it = properties.iterator();
while (it.hasNext()) {
buffer.append(it.next().getFormula());
if (it.hasNext()) {
buffer.append(";");
}
}
StringReader stringReader = new StringReader(buffer.toString());
BufferedReader checkingProperties = new BufferedReader(stringReader);
formulas = (new Parser(checkingProperties)).parseFormulaList();
checkingProperties.close();
} catch (ParseException e) {
System.out.println("ParseException in properties: " + e.toString());
} catch (IOException e) {
System.out.println("Could not access file .");
}
if (transitionSystem != null && formulas != null) {
Object[] myprops = properties.toArray();
for (int i = 0; i < formulas.length; i++) {
if (transitionSystem.isValid(formulas[i].toROBDD(transitionSystem))) {
((Property) myprops[i]).setAccepted(true);
} else {
((Property) myprops[i]).setAccepted(false);
}
}
return properties;
}
return null;
}
private String convertNextStateTransitions(ContextState state, KripkeStructureModel kripkeModel) {
StringBuffer buffer = new StringBuffer();
Iterator<String> symbolsIt = null;
ContextPropositionAssignment assignment = state.getAssignment();
if (assignment.size() > 0) {
symbolsIt = assignment.getSymbols().iterator();
while (symbolsIt.hasNext()) {
String symbol = symbolsIt.next();
if (assignment.getValuationOf(symbol)) {
buffer.append(symbol);
} else {
buffer.append("!" + symbol);
}
if (symbolsIt.hasNext()) {
buffer.append(" & ");
}
}
String currentState = buffer.toString();
buffer = new StringBuffer();
int[] nextStatesId = state.getNextStatesId();
Set<ContextState> nextStates = new LinkedHashSet<ContextState>();
for (int nextStateId : nextStatesId) {
nextStates.add(kripkeModel.getState(nextStateId));
}
Iterator<ContextState> nextStatesIt = nextStates.iterator();
while (nextStatesIt.hasNext()) {
ContextState next = nextStatesIt.next();
buffer.append("(" + currentState + " & ");
ContextPropositionAssignment nextAssignment = next.getAssignment();
symbolsIt = nextAssignment.getSymbols().iterator();
while (symbolsIt.hasNext()) {
String symbol = symbolsIt.next();
if (nextAssignment.getValuationOf(symbol)) {
buffer.append(symbol + "'");
} else {
buffer.append("!" + symbol + "'");
}
if (symbolsIt.hasNext()) {
buffer.append(" & ");
}
}
buffer.append(")");
if (nextStatesIt.hasNext()) {
buffer.append(" |\n");
}
}
}
return buffer.toString();
}
public String convertTransitions(KripkeStructureModel kripkeModel) {
StringBuffer buffer = new StringBuffer();
ContextState state = null;
Iterator<ContextState> states = kripkeModel.getReachableStates().iterator();
while (states.hasNext()) {
state = states.next();
buffer.append(this.convertNextStateTransitions(state, kripkeModel));
if (states.hasNext()) {
buffer.append(" |\n");
}
}
return buffer.toString();
}
