@Override
public Result solve(Expression<Boolean> f, Valuation result) {
CoralExpressionGenerator root = new CoralExpressionGenerator();
final Env[] sol = new Env[1];
try {
final PC pc = root.generateAssertion(f);
logger.fine("Coral solving...");
sol[0] = coralSolver.getCallable(pc).call();
} catch (Exception e) {
logger.severe("Coral threw exception. Returning DONT_KNOW");
return Result.DONT_KNOW;
}
// TODO: not sure why the solution is found as the first element in the Env[]...
Env coralSol = sol[0];
Result coralRes = convertCoralRes(coralSol.getResult());
if (result != null
&& coralRes == Result.SAT) { // result is requested besides satisfiability check
HashMap<Variable<?>, SymLiteral> varMap = root.getVariables();
for (Variable<?> v : varMap.keySet()) {
SymNumber value = coralSol.getValue(varMap.get(v));
// These checks make my eyes bleed
if ((v.getType() instanceof FloatType)
&& !(value instanceof SymFloat)) { // TODO: ensure this is sound. It seems like a patch
Float floatVal = value.evalNumber().floatValue();
result.setParsedValue(v, floatVal.toString());
} else if ((v.getType() instanceof DoubleType) && !(value instanceof SymDouble)) {
Double dVal = value.evalNumber().doubleValue();
result.setParsedValue(v, dVal.toString());
} else if ((v.getType() instanceof SInt32Type) && !(value instanceof SymInt)) {
Integer iVal = value.evalNumber().intValue();
result.setParsedValue(v, iVal.toString());
} else if ((v.getType() instanceof SInt64Type) && !(value instanceof SymLong)) {
Long lVal = value.evalNumber().longValue();
result.setParsedValue(v, lVal.toString());
} else // This is the default case which should be the most frequent one
result.setParsedValue(v, value.toString());
}
logger.finer("Satisfiable, valuation " + result);
}
return coralRes;
}
@Test
public void testIfThenElse() {
Variable x = new Variable(BuiltinTypes.BOOL, "x");
Variable y = new Variable(BuiltinTypes.SINT32, "y");
Constant c = new Constant(BuiltinTypes.SINT32, 3);
IfThenElse ite =
new IfThenElse(
x,
new NumericCompound<>(y, NumericOperator.PLUS, c),
new NumericCompound<>(y, NumericOperator.MINUS, c));
System.out.println(ite);
Valuation val = new Valuation();
val.setValue(y, 10);
val.setValue(x, true);
System.out.println(val + ": " + ite.evaluate(val));
val.setValue(x, false);
System.out.println(val + ": " + ite.evaluate(val));
}
