/**
* Grounds the parameter by assigning the values in the assignment to the unknown variables
*
* @param input the grounding assignment
* @return the grounded parameter
*/
public Parameter ground(Assignment input) {
if (input.containsVars(expression.getVariables())) {
try {
double result = expression.evaluate(input);
return new FixedParameter(result);
} catch (IllegalArgumentException e) {
log.warning("cannot ground " + expression + " with " + input);
}
}
String filled = expression.toString();
for (String u : input.getVariables()) {
filled.replaceAll(u, input.getValue(u).toString());
}
return new ComplexParameter(filled);
}
