private AphidInteropMethodArg(
ParameterInfo parameter,
object argument,
bool?constructsParamArray = null)
{
Argument = argument;
if (argument != null)
{
ArgumentType = argument.GetType();
lock (ParamCache)
{
if (!ParamCache.TryGetValue(parameter, out _paramInfo))
{
ParamCache.Add(
parameter,
_paramInfo = new ParameterInfoCache(parameter, ArgumentType));
_argInfo = _paramInfo.InitialArgumentTypeCache;
}
else if (!_paramInfo.ArgumentTypeCache.TryGetValue(ArgumentType, out _argInfo))
{
_paramInfo.ArgumentTypeCache.Add(
ArgumentType,
_argInfo = new ArgumentTypeCache(
ArgumentType,
_paramInfo,
_paramInfo.TargetType));
}
}
}
else
{
lock (ParamCache)
{
if (!ParamCache.TryGetValue(parameter, out _paramInfo))
{
ParamCache.Add(
parameter,
_paramInfo = new ParameterInfoCache(parameter));
}
_argInfo = new ArgumentTypeCache();
}
}
IsGeneric = TargetType.IsGenericType;
if (_argInfo.NeedsStringToCharCheck)
{
if (((string)Argument).Length == 1)
{
IsExactBasicTypeMatch = true;
}
//IsExactUserReferenceTypeMatch = false;
}
else if (_argInfo.NeedsDecimalFitCheck)
{
IsConvertibleNumberPair = AphidTypeConverter.CanConvertDecimal(
(decimal)Argument,
TargetType);
}
else
{
IsConvertibleNumberPair = _argInfo.IsConvertibleNumberPair;
IsExactBasicTypeMatch = _argInfo.IsExactBasicTypeMatch;
IsExactUserReferenceTypeMatch = _argInfo.IsExactUserReferenceTypeMatch;
}
if (HasParamArray)
{
if (constructsParamArray == null)
{
if (!HasParamArray)
{
ConstructsParamArray = false;
PassesParamArray = false;
}
else
{
if (!IsExactTypeMatch &&
ArgumentType?.GetInterface("IEnumerable") != null)
{
ConstructsParamArray = true;
PassesParamArray = false;
}
else
{
ConstructsParamArray = false;
PassesParamArray = true;
}
}
}
else
{
ConstructsParamArray = constructsParamArray.Value;
PassesParamArray = !ConstructsParamArray;
}
}
}
public ArgumentTypeCache(
Type argumentType,
ParameterInfoCache targetParam,
Type targetType)
{
if (IsExactTypeMatch = argumentType == targetType)
{
IsExactBasicTypeMatch =
argumentType.IsPrimitive ||
argumentType.IsEnum ||
argumentType == typeof(string) ||
argumentType == typeof(decimal);
IsExactUserReferenceTypeMatch = argumentType.IsClass && argumentType != typeof(object);
HasToStringConversion = targetType == typeof(string);
}
else if (argumentType == typeof(string) && targetType == typeof(char[]))
{
IsExactBasicTypeMatch = false;
IsExactUserReferenceTypeMatch = false;
HasToStringConversion = targetType == typeof(string);
}
else if (argumentType == typeof(char) && targetType == typeof(string))
{
IsExactBasicTypeMatch = true;
IsExactUserReferenceTypeMatch = false;
HasToStringConversion = targetType == typeof(string);
}
else if (argumentType != typeof(string) || targetType != typeof(char))
{
if ((ImplicitConversionOperator = ConversionOperator.GetImplicitOperator(
targetType,
argumentType)) != null)
{
HasImplicitConversion = true;
}
else if ((ExplicitConversionOperator = ConversionOperator.GetExplicitOperator(
targetType,
argumentType)) != null)
{
HasExplicitConversion = true;
}
if (targetType == typeof(string))
{
HasToStringConversion = true;
}
IsExactBasicTypeMatch = IsExactUserReferenceTypeMatch = false;
}
else
{
HasToStringConversion = targetType == typeof(string);
NeedsStringToCharCheck = true;
}
IsDerivedFromUserReferenceType =
targetParam.IsClass &&
targetType != typeof(object) &&
targetType != typeof(object[]) &&
(argumentType == null ||
(argumentType.IsClass &&
argumentType.IsDerivedFrom(targetType)));
IsNonRootImplementationOfTarget =
targetType.IsInterface &&
argumentType != null &&
argumentType != typeof(object) &&
argumentType.GetInterfaces().Contains(targetType);
if (argumentType == typeof(decimal) && AphidTypeConverter.IsNumber(targetType))
{
NeedsDecimalFitCheck = true;
IsPrecisionLost = targetType == typeof(float) || targetType == typeof(double);
}
else if (targetType == typeof(decimal) && AphidTypeConverter.IsNumber(argumentType))
{
IsConvertibleNumberPair = true;
}
else
{
// Todo: cover non-decimal to non-decimal checks e.g.
// ulong to uint -> uint.MinValue <= ulongValue && ulongValue <= uint.MaxValue
IsConvertibleNumberPair = false;
}
}