private static boolean assignmentsSound(Node node) {
Set<String> toAssign = new HashSet<>();
toAssign.addAll(Util.getIds(node.outputs));
toAssign.addAll(Util.getIds(node.locals));
Set<String> assigned = new HashSet<>();
boolean sound = true;
for (Equation eq : node.equations) {
for (IdExpr idExpr : eq.lhs) {
if (toAssign.contains(idExpr.id)) {
toAssign.remove(idExpr.id);
assigned.add(idExpr.id);
} else if (assigned.contains(idExpr.id)) {
System.out.println(
"Error at line "
+ idExpr.location
+ " variable '"
+ idExpr.id
+ "' cannot be reassigned");
sound = false;
} else {
System.out.println(
"Error at line "
+ idExpr.location
+ " variable '"
+ idExpr.id
+ "' cannot be assigned");
sound = false;
}
}
}
if (!toAssign.isEmpty()) {
System.out.println("Error in node '" + node.id + "' variables must be assigned: " + toAssign);
sound = false;
}
return sound;
}
private static boolean propertiesExist(Program program) {
boolean exist = true;
for (Node node : program.nodes) {
Set<String> variables = new HashSet<>(Util.getIds(Util.getVarDecls(node)));
for (String prop : node.properties) {
if (!variables.contains(prop)) {
System.out.println(
"Error: property '" + prop + "' does not exist in node '" + node.id + "'");
exist = false;
}
}
}
return exist;
}
