public static string[] GetDependencies(IExpression init)
{
HashSet <string> deps = new HashSet <string>();
foreach (IExpression expr in init.GetArgs())
{
if (expr is ExprRegFunc)
{
ExprRegFunc func = expr as ExprRegFunc;
if (!IsDefaultFunction(func))
{
deps.Add(MathAliases.ConvertName(func.Name));
}
}
if (expr.GetArgsCount() > 0)
{
string[] internalDeps = GetDependencies(expr);
foreach (string dep in internalDeps)
{
deps.Add(dep);
}
}
}
return(deps.ToArray());
}
private static bool IsDefaultFunction(ExprRegFunc func)
{
string name = func.Name;
if (name == "ln" || name == "exp" || name == "abs" ||
name == "sin" || name == "cos" || name == "tg" || name == "tan" || name == "ctg" || name == "cot" ||
name == "arcsin" || name == "arccos" || name == "arctg" || name == "arctan" || name == "arcctg" || name == "arccot")
{
return(true);
}
return(false);
}