using System; using System.Diagnostics.CodeAnalysis; using System.Globalization; namespace Connected { ///

/// A universal T to double binding converter /// /// Note: currently not in use. Should we ever use it, remove /// the [ExcludeFromCodeCoverage] attribute ///

[ExcludeFromCodeCoverage] public class NumericConverter : Converter { public NumericConverter() { } protected override double ConvertValue(T? value) { return OnSet(value); } protected override T? ConvertValueBack(double value) { return OnGet(value); } private T OnGet(double value) { try { // double if (typeof(T) == typeof(double) || typeof(T) == typeof(double?)) return (T)(object)value; // string else if (typeof(T) == typeof(string)) return (T)(object)value.ToString(Culture); // sbyte else if (typeof(T) == typeof(sbyte) || typeof(T) == typeof(sbyte?)) return (T)(object)System.Convert.ToSByte(value); // byte else if (typeof(T) == typeof(byte) || typeof(T) == typeof(byte?)) return (T)(object)System.Convert.ToByte(value); // short else if (typeof(T) == typeof(short) || typeof(T) == typeof(short?)) return (T)(object)System.Convert.ToInt16(value); // ushort else if (typeof(T) == typeof(ushort) || typeof(T) == typeof(ushort?)) return (T)(object)System.Convert.ToUInt16(value); // int else if (typeof(T) == typeof(int) || typeof(T) == typeof(int?)) return (T)(object)System.Convert.ToInt32(value); // uint else if (typeof(T) == typeof(uint) || typeof(T) == typeof(uint?)) return (T)(object)System.Convert.ToUInt32(value); // long else if (typeof(T) == typeof(long) || typeof(T) == typeof(long?)) return (T)(object)System.Convert.ToInt64(value); // ulong else if (typeof(T) == typeof(ulong) || typeof(T) == typeof(ulong?)) return (T)(object)System.Convert.ToUInt64(value); // float else if (typeof(T) == typeof(float) || typeof(T) == typeof(float?)) return (T)(object)System.Convert.ToSingle(value); // decimal else if (typeof(T) == typeof(decimal) || typeof(T) == typeof(decimal?)) return (T)(object)System.Convert.ToDecimal(value); else { TriggerError($"Conversion to type {typeof(T)} not implemented"); } } catch (Exception e) { TriggerError("Conversion error: " + e.Message); return default(T); } return default(T); } private double OnSet(T arg) { if (arg == null) return double.NaN; // <-- this catches all nullable values which are null. no nullchecks necessary below! try { // double if (typeof(T) == typeof(double)) return (double)(object)arg; else if (typeof(T) == typeof(double?)) return ((double?)(object)arg).Value; // string if (typeof(T) == typeof(string)) return double.Parse((string)(object)arg, NumberStyles.Any, Culture); // sbyte if (typeof(T) == typeof(sbyte)) return System.Convert.ToDouble((sbyte)(object)arg); if (typeof(T) == typeof(sbyte?)) return System.Convert.ToDouble(((sbyte?)(object)arg).Value); // byte if (typeof(T) == typeof(byte)) return System.Convert.ToDouble((byte)(object)arg); if (typeof(T) == typeof(byte?)) return System.Convert.ToDouble(((byte?)(object)arg).Value); // short if (typeof(T) == typeof(short)) return System.Convert.ToDouble((short)(object)arg); if (typeof(T) == typeof(short?)) return System.Convert.ToDouble(((short?)(object)arg).Value); // ushort if (typeof(T) == typeof(ushort)) return System.Convert.ToDouble((ushort)(object)arg); if (typeof(T) == typeof(ushort?)) return System.Convert.ToDouble(((ushort?)(object)arg).Value); // int else if (typeof(T) == typeof(int)) return System.Convert.ToDouble((int)(object)arg); else if (typeof(T) == typeof(int?)) return System.Convert.ToDouble(((int?)(object)arg).Value); // uint else if (typeof(T) == typeof(uint)) return System.Convert.ToDouble((uint)(object)arg); else if (typeof(T) == typeof(uint?)) return System.Convert.ToDouble(((uint?)(object)arg).Value); // long else if (typeof(T) == typeof(long)) return System.Convert.ToDouble((long)(object)arg); else if (typeof(T) == typeof(long?)) return System.Convert.ToDouble(((long?)(object)arg).Value); // ulong else if (typeof(T) == typeof(ulong)) return System.Convert.ToDouble((ulong)(object)arg); else if (typeof(T) == typeof(ulong?)) return System.Convert.ToDouble(((ulong?)(object)arg).Value); // float else if (typeof(T) == typeof(float)) return System.Convert.ToDouble((float)(object)arg); else if (typeof(T) == typeof(float?)) return System.Convert.ToDouble(((float?)(object)arg).Value); // decimal else if (typeof(T) == typeof(decimal)) return System.Convert.ToDouble((decimal)(object)arg); else if (typeof(T) == typeof(decimal?)) return System.Convert.ToDouble(((decimal?)(object)arg).Value); else { TriggerError("Unable to convert to double from type " + typeof(T).Name); return double.NaN; } } catch (FormatException e) { TriggerError("Conversion error: " + e.Message); return double.NaN; } } #region --> Floating Point comparison const double MinNormal = 2.2250738585072014E-308d; public static bool AreEqual(double a, double b, double epsilon = MinNormal) { // Copyright (c) Michael Borgwardt var absA = Math.Abs(a); var absB = Math.Abs(b); var diff = Math.Abs(a - b); if (a.Equals(b)) { // shortcut, handles infinities return true; } else if (a == 0 || b == 0 || absA + absB < MinNormal) { // a or b is zero or both are extremely close to it // relative error is less meaningful here return diff < (epsilon * MinNormal); } else { // use relative error return diff / (absA + absB) < epsilon; } } #endregion } [ExcludeFromCodeCoverage] internal static class Num { public static T To(double d) { if (typeof(T) == typeof(sbyte) && d >= sbyte.MinValue && sbyte.MaxValue >= d) return (T)(object)Convert.ToSByte(d); if (typeof(T) == typeof(byte) && d >= byte.MinValue && byte.MaxValue >= d) return (T)(object)Convert.ToByte(d); if (typeof(T) == typeof(short) && d >= short.MinValue && short.MaxValue >= d) return (T)(object)Convert.ToInt16(d); if (typeof(T) == typeof(ushort) && d >= ushort.MinValue && ushort.MaxValue >= d) return (T)(object)Convert.ToUInt16(d); if (typeof(T) == typeof(int) && d >= int.MinValue && int.MaxValue >= d) return (T)(object)Convert.ToInt32(d); if (typeof(T) == typeof(uint) && d >= uint.MinValue && uint.MaxValue >= d) return (T)(object)Convert.ToUInt32(d); if (typeof(T) == typeof(long) && d >= long.MinValue && long.MaxValue >= d) return (T)(object)Convert.ToInt64(d); if (typeof(T) == typeof(ulong) && d >= ulong.MinValue && ulong.MaxValue >= d) return (T)(object)Convert.ToUInt64(d); if (typeof(T) == typeof(float) && d >= float.MinValue && float.MaxValue >= d) return (T)(object)Convert.ToSingle(d); if (typeof(T) == typeof(double) && d >= double.MinValue && double.MaxValue >= d) return (T)(object)Convert.ToDouble(d); if (typeof(T) == typeof(decimal) && (decimal)d >= decimal.MinValue && decimal.MaxValue >= (decimal)d) return (T)(object)Convert.ToDecimal(d); if (typeof(T) == typeof(sbyte?) && d >= sbyte.MinValue && sbyte.MaxValue >= d) return (T)(object)Convert.ToSByte(d); if (typeof(T) == typeof(byte?) && d >= byte.MinValue && byte.MaxValue >= d) return (T)(object)Convert.ToByte(d); if (typeof(T) == typeof(short?) && d >= short.MinValue && short.MaxValue >= d) return (T)(object)Convert.ToInt16(d); if (typeof(T) == typeof(ushort?) && d >= ushort.MinValue && ushort.MaxValue >= d) return (T)(object)Convert.ToUInt16(d); if (typeof(T) == typeof(int?) && d >= int.MinValue && int.MaxValue >= d) return (T)(object)Convert.ToInt32(d); if (typeof(T) == typeof(uint?) && d >= uint.MinValue && uint.MaxValue >= d) return (T)(object)Convert.ToUInt32(d); if (typeof(T) == typeof(long?) && d >= long.MinValue && long.MaxValue >= d) return (T)(object)Convert.ToInt64(d); if (typeof(T) == typeof(ulong?) && d >= ulong.MinValue && ulong.MaxValue >= d) return (T)(object)Convert.ToUInt64(d); if (typeof(T) == typeof(float?) && d >= float.MinValue && float.MaxValue >= d) return (T)(object)Convert.ToSingle(d); if (typeof(T) == typeof(double?) && d >= double.MinValue && double.MaxValue >= d) return (T)(object)Convert.ToDouble(d); if (typeof(T) == typeof(decimal?) && (decimal)d >= decimal.MinValue && decimal.MaxValue >= (decimal)d) return (T)(object)Convert.ToDecimal(d); return default; } public static double From(T v) { if (typeof(T) == typeof(sbyte)) return Convert.ToDouble((sbyte)(object)v); if (typeof(T) == typeof(byte)) return Convert.ToDouble((byte)(object)v); if (typeof(T) == typeof(short)) return Convert.ToDouble((short)(object)v); if (typeof(T) == typeof(ushort)) return Convert.ToDouble((ushort)(object)v); if (typeof(T) == typeof(int)) return Convert.ToDouble((int)(object)v); if (typeof(T) == typeof(uint)) return Convert.ToDouble((uint)(object)v); if (typeof(T) == typeof(long)) return Convert.ToDouble((long)(object)v); if (typeof(T) == typeof(ulong)) return Convert.ToDouble((ulong)(object)v); if (typeof(T) == typeof(float)) return Convert.ToDouble((float)(object)v); if (typeof(T) == typeof(double)) return Convert.ToDouble((double)(object)v); if (typeof(T) == typeof(decimal)) return Convert.ToDouble((decimal)(object)v); if (typeof(T) == typeof(sbyte?)) return Convert.ToDouble((sbyte?)(object)v); if (typeof(T) == typeof(byte?)) return Convert.ToDouble((byte?)(object)v); if (typeof(T) == typeof(short?)) return Convert.ToDouble((short?)(object)v); if (typeof(T) == typeof(ushort?)) return Convert.ToDouble((ushort?)(object)v); if (typeof(T) == typeof(int?)) return Convert.ToDouble((int?)(object)v); if (typeof(T) == typeof(uint?)) return Convert.ToDouble((uint?)(object)v); if (typeof(T) == typeof(long?)) return Convert.ToDouble((long?)(object)v); if (typeof(T) == typeof(ulong?)) return Convert.ToDouble((ulong?)(object)v); if (typeof(T) == typeof(float?)) return Convert.ToDouble((float?)(object)v); if (typeof(T) == typeof(double?)) return Convert.ToDouble((double?)(object)v); if (typeof(T) == typeof(decimal?)) return Convert.ToDouble((decimal?)(object)v); return default; } } }