Beispiel #1
0
        public static Equation Build(string e)
        {
            e = e.Trim();
            Equation n = new Equation();
            Equation p = new Equation();
            int      a = 0;
            int      z = 0;
            string   s = "";

            foreach (char c in e)
            {
                if (c.EqualsAny('(', '['))
                {
                    a += 1;
                }
                else if (c.EqualsAny(')', ']'))
                {
                    z += 1;
                }
            }
            if (a.Equals(z))
            {
                foreach (char c in e)
                {
                    if (c.IsSolvable())
                    {
                        if (s != "")
                        {
                            if (s.EndsWith("0"))
                            {
                                if (s.Length == 1)
                                {
                                    if (c.IsDigit())
                                    {
                                        s = "" + c;
                                        continue;
                                    }
                                }
                                else
                                {
                                    if (s[s.Length - 2].IsOperator())
                                    {
                                        if (c.IsDigit())
                                        {
                                            s = s.ReplaceEnd(c);
                                            continue;
                                        }
                                    }
                                }
                            }
                            if (s.EndsWith("/0"))
                            {
                                if (c.IsOperator())
                                {
                                    s = "";
                                    n = n.Throw("divide_by_zero");
                                    break;
                                }
                            }
                            if (new char[] { c, s[s.Length - 1] }.AreOperators())
                            {
                                s = "";
                                n = n.Throw("invalid_operator_usage");
                                break;
                            }
                        }
                        s += c;
                        continue;
                    }
                    else if (c.EqualsAny('(', '['))
                    {
                        if (s != "")
                        {
                            if (s[s.LengthAsIndex()].IsAlphanumeric())
                            {
                                s += "*";
                            }

                            if (s.EndsWith("/0"))
                            {
                                s = "";
                                n = n.Throw("divide_by_zero");
                                break;
                            }
                        }
                        s += $"[{n.Layer + 1}, {n.Children.Count}]";
                        s.Debug($"[Opening a new equation in {n.Index()}...]");
                        n.Conjoin(s);
                        p = n;
                        n = new Equation(p);
                        p.Adopt(n);
                        s.Debug($"[Set {n.Index()} in layer {p.Layer}.]");
                        s = "";
                        continue;
                    }
                    else if (c.EqualsAny(')', ']'))
                    {
                        if (s.EndsWith("/0"))
                        {
                            s = "";
                            n = n.Throw("divide_by_zero");
                            break;
                        }
                        n.Value += s;
                        if (n.HasValue())
                        {
                            Debugger.Write("[No property was written. Setting to null...]");
                            n.Assign("null");
                        }
                        n.Value.Debug($"[Closing {n.Index()}...]");
                        n = n.Parent;
                        s = "";
                        continue;
                    }
                }
                if (s != "")
                {
                    if (s.EndsWith("/0"))
                    {
                        s = "";
                        n = n.Throw("divide_by_zero");
                    }
                    else
                    {
                        n.Conjoin(s);
                        n.Value.Debug($"[Extending {n.Index()}...]");
                    }
                }
            }
            else
            {
                Debugger.Write("[Incorrect equation structure. Now cancelling...]");
                n.Throw("invalid_equation_structure");
            }
            n = n.GetRootParent();
            return(n);
        }
Beispiel #2
0
 public void Abandon(Equation child) =>
 Children.Remove(child);
Beispiel #3
0
 public Equation(Equation parent)
 {
     Parent   = parent;
     Layer    = Parent.Layer + 1;
     Position = Parent.Children.Count;
 }
Beispiel #4
0
 public void Adopt(Equation child) =>
 Children.Add(child);