public static IEnumerable <string> GetReferencedVariables(Expr e)
{
var finder = new VariableReferenceFinder();
e.Accept(finder);
return(finder._referencedVariables);
}
public override void Visit(AssignmentExpr expr)
{
// If the expression does not reference itself, then we're cool.
var refs = VariableReferenceFinder.GetReferencedVariables(expr.Value);
if (refs.All(r => r != expr.Name))
{
_definedVariables.Add(expr.Name);
}
}
