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Convert.cs
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Convert.cs
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namespace Ignite {
public static class Convert {
public static T To<T> (this object? value)
=> Convert_Primitive<T> (in value);
public static T To<T> (this object? value, T exception)
=> Convert_Primitive_Exception (in value, in exception);
public static T Primitive<T> (in object? value)
=> Convert_Primitive<T> (in value);
public static T Primitive<T> (in object? value, T exception)
=> Convert_Primitive_Exception (in value, in exception);
public static void Primitive<T> (in object? value, out T result)
=> result = Convert_Primitive<T> (in value);
public static void Primitive<T> (in object? value, T exception, out T result)
=> result = Convert_Primitive_Exception (in value, in exception);
public static void Primitive<T> (ref T result, in object? value)
=> result = Convert_Primitive<T> (in value);
public static void Primitive<T> (ref T result, in object? value, T exception)
=> result = Convert_Primitive_Exception (in value, in exception);
public static T[] Array<T> (in System.Collections.Generic.IEnumerable<T> collection)
=> System.Linq.Enumerable.ToArray (collection);
public static System.Collections.Generic.List<T> List<T> (in System.Collections.Generic.IEnumerable<T> collection)
=> System.Linq.Enumerable.ToList (collection);
public static System.Collections.Generic.Stack<T> Stack<T> (in System.Collections.Generic.IEnumerable<T> collection)
=> new (collection);
public static System.Collections.Generic.Queue<T> Queue<T> (in System.Collections.Generic.IEnumerable<T> collection)
=> new (collection);
public static void Array<T> (in System.Collections.Generic.IEnumerable<T> collection, out T[] result)
=> result = System.Linq.Enumerable.ToArray (collection);
public static void List<T> (in System.Collections.Generic.IEnumerable<T> collection, out System.Collections.Generic.List<T> result)
=> result = System.Linq.Enumerable.ToList (collection);
public static void Stack<T> (in System.Collections.Generic.IEnumerable<T> collection, out System.Collections.Generic.Stack<T> result)
=> result = new (collection);
public static void Queue<T> (in System.Collections.Generic.IEnumerable<T> collection, out System.Collections.Generic.Queue<T> result)
=> result = new (collection);
public static void Array<T> (ref T[] result, in System.Collections.Generic.IEnumerable<T> collection)
=> result = System.Linq.Enumerable.ToArray (collection);
public static void List<T> (ref System.Collections.Generic.List<T> result, in System.Collections.Generic.IEnumerable<T> collection)
=> result = System.Linq.Enumerable.ToList (collection);
public static void Stack<T> (ref System.Collections.Generic.Stack<T> result, in System.Collections.Generic.IEnumerable<T> collection)
=> result = new (collection);
public static void Queue<T> (ref System.Collections.Generic.Queue<T> result, in System.Collections.Generic.IEnumerable<T> collection)
=> result = new (collection);
public static T[] Array<T> (in System.Collections.IEnumerable collection)
=> [.. List<T> (collection)];
public static System.Collections.Generic.List<T> List<T> (in System.Collections.IEnumerable collection) {
var result = new System.Collections.Generic.List<T> ();
foreach (var item in collection)
result.Add (Convert_Primitive<T> (in item));
return result;
}
public static System.Collections.Generic.Stack<T> Stack<T> (in System.Collections.IEnumerable collection)
=> new (List<T> (collection));
public static System.Collections.Generic.Queue<T> Queue<T> (in System.Collections.IEnumerable collection)
=> new (List<T> (collection));
public static void Array<T> (in System.Collections.IEnumerable collection, out T[] result)
=> result = [.. List<T> (collection)];
public static void List<T> (in System.Collections.IEnumerable collection, out System.Collections.Generic.List<T> result)
=> result = List<T> (in collection);
public static void Stack<T> (in System.Collections.IEnumerable collection, out System.Collections.Generic.Stack<T> result)
=> result = new (List<T> (collection));
public static void Queue<T> (in System.Collections.IEnumerable collection, out System.Collections.Generic.Queue<T> result)
=> result = new (List<T> (collection));
public static void Array<T> (ref T[] result, in System.Collections.IEnumerable collection)
=> result = [.. List<T> (collection)];
public static void List<T> (ref System.Collections.Generic.List<T> result, in System.Collections.IEnumerable collection)
=> result = List<T> (in collection);
public static void Stack<T> (ref System.Collections.Generic.Stack<T> result, in System.Collections.IEnumerable collection)
=> result = new (List<T> (collection));
public static void Queue<T> (ref System.Collections.Generic.Queue<T> result, in System.Collections.IEnumerable collection)
=> result = new (List<T> (collection));
private static T Convert_Primitive<T> (in object? value) {
if (value == null) {
return typeof (T).IsValueType && System.Nullable.GetUnderlyingType (typeof (T)) == null
? throw new System.ArgumentNullException (nameof (value), "Cannot convert null to a non-nullable value type.")
: default!;
}
var target = System.Nullable.GetUnderlyingType (typeof (T)) ?? typeof (T);
if (IsTuple (in target))
return (T)ConvertTuple (in value, in target);
try {
return (T)ToPrimitive (in value, in target);
} catch (System.InvalidCastException) {
throw new System.InvalidOperationException ($"Cannot convert the value '{value}' of type {value.GetType ()} to type {typeof (T)}.");
} catch (System.FormatException) {
throw new System.InvalidOperationException ($"Cannot convert the value '{value}' of type {value.GetType ()} to type {typeof (T)} due to format issue.");
}
static bool IsTuple (in System.Type type) {
if (!type.IsGenericType)
return false;
var definition = type.GetGenericTypeDefinition ();
return definition == typeof (System.ValueTuple<>) ||
definition == typeof (System.ValueTuple<,>) ||
definition == typeof (System.ValueTuple<,,>) ||
definition == typeof (System.ValueTuple<,,,>) ||
definition == typeof (System.ValueTuple<,,,,>) ||
definition == typeof (System.ValueTuple<,,,,,>) ||
definition == typeof (System.ValueTuple<,,,,,,>) ||
(definition == typeof (System.ValueTuple<,,,,,,,>) &&
System.Linq.Enumerable.Last (type.GetGenericArguments ()).IsGenericType &&
IsTuple (System.Linq.Enumerable.Last (type.GetGenericArguments ())));
}
static object ConvertTuple (in object value, in System.Type target) {
if (value == null)
throw new System.ArgumentNullException (nameof (value), "Cannot convert null to a tuple.");
var type = value.GetType ();
if (!IsTuple (in type))
throw new System.InvalidOperationException ("Input value is not a tuple.");
var arguments = target.GetGenericArguments ();
var length = arguments.Length;
if (length != type.GetGenericArguments ().Length && (length != 8 || !IsTuple (System.Linq.Enumerable.Last (arguments))))
throw new System.InvalidOperationException ("Tuple lengths do not match.");
var items = new object[length];
for (var i = 0; i < length - 1; i++)
items[i] = ConvertItem (type.GetField ($"Item{i + 1}")?.GetValue (value)!, arguments[i]);
if (length == 8) {
items[7] = ConvertTuple (type.GetField ("Rest")?.GetValue (value)!, System.Linq.Enumerable.Last (arguments));
} else {
items[length - 1] = ConvertItem (type.GetField ($"Item{length}")?.GetValue (value)!, System.Linq.Enumerable.Last (arguments));
}
return System.Activator.CreateInstance (target, items)!;
}
static object ConvertItem (in object value, in System.Type target) {
if (value == null)
return System.Nullable.GetUnderlyingType (target) != null
? null!
: throw new System.InvalidOperationException ("Null object cannot be converted to a non-nullable value type.");
var underlying = System.Nullable.GetUnderlyingType (target) ?? target;
return IsTuple (in underlying)
? ConvertTuple (in value, in underlying)
: ToPrimitive (in value, in underlying)!;
}
static object ToPrimitive (in object value, in System.Type target) {
try {
return target switch {
var type when type == typeof (nint) => ToNInt (in value),
var type when type == typeof (nuint) => ToNUInt (in value),
_ => ToTargetType (in value, System.Type.GetTypeCode (target))
};
} catch {
throw new System.InvalidCastException ($"Unsupported conversion from type '{value.GetType ().Name.Replace ("IntPtr", "nint").Replace ("UIntPtr", "nuint")}' to type '{target.Name}'.");
}
}
static object ToNInt (in object value) => value switch {
byte type => type,
ushort type => type,
uint type => (nint)type,
ulong type => (nint)type,
sbyte type => type,
short type => type,
int type => type,
long type => (nint)type,
nint type => type,
nuint type => (nint)type,
float type => (nint)type,
double type => (nint)type,
decimal type => (nint)type,
bool type when type => 1,
bool type when !type => 0,
char type => type,
_ => nint.Parse (value.ToString ()!)
};
static object ToNUInt (in object value) => value switch {
byte type => type,
ushort type => type,
uint type => type,
ulong type => (nuint)type,
sbyte type => (nuint)type,
short type => (nuint)type,
int type => (nuint)type,
long type => (nuint)type,
nint type => (nuint)type,
nuint type => type,
float type => (nuint)type,
double type => (nuint)type,
decimal type => (nuint)type,
bool type when type => (nuint)1,
bool type when !type => (nuint)0,
char type => type,
_ => nuint.Parse (value.ToString ()!)
};
static object ToTargetType (in object value, in System.TypeCode target) => target switch {
System.TypeCode.Byte => System.Convert.ToByte (value),
System.TypeCode.UInt16 => System.Convert.ToUInt16 (value),
System.TypeCode.UInt32 => System.Convert.ToUInt32 (value),
System.TypeCode.UInt64 => System.Convert.ToUInt64 (value),
System.TypeCode.SByte => System.Convert.ToSByte (value),
System.TypeCode.Int16 => System.Convert.ToInt16 (value),
System.TypeCode.Int32 => System.Convert.ToInt32 (value),
System.TypeCode.Int64 => System.Convert.ToInt64 (value),
System.TypeCode.Single => System.Convert.ToSingle (value),
System.TypeCode.Double => System.Convert.ToDouble (value),
System.TypeCode.Decimal => System.Convert.ToDecimal (value),
System.TypeCode.Boolean => ToBoolean (in value),
System.TypeCode.Char => ToChar (in value),
System.TypeCode.String => value.ToString ()!,
System.TypeCode.Object => value,
_ => throw new System.InvalidCastException ()
};
static object ToBoolean (in object value) => value switch {
char type when (byte)type == 1 => true,
char type when (byte)type == 0 => false,
_ => System.Convert.ToBoolean (value)
};
static object ToChar (in object value) => value switch {
float type => (char)type,
double type => (char)type,
decimal type => (char)type,
bool type when type => (char)1,
bool type when !type => (char)0,
_ => System.Convert.ToChar (value)
};
}
private static T Convert_Primitive_Exception<T> (in object? value, in T exception) {
try {
return Convert_Primitive<T> (in value);
} catch {
return exception;
}
}
}
}