private ParameterTypesRating GetParameterTypesRating(List <SignatureType> searchParameterTypes)
{
var parameterRating = new ParameterTypesRating();
if (ParameterTypes.Count == 0 && searchParameterTypes.Count == 0)
{
parameterRating.AddExactMatch();
}
if (ParameterTypes.Count < searchParameterTypes.Count)
{
return(parameterRating.SetFailed());
}
parameterRating.SetGenericParameterCount(ParameterTypes.Count(p => p.IsGeneric));
for (var i = 0; i < ParameterTypes.Count; i++)
{
var thisType = this.ParameterTypes[i];
if (searchParameterTypes.Count > i)
{
var otherType = searchParameterTypes[i];
if (otherType.FoundMatchingType == thisType.FoundMatchingType || otherType.FoundMatchingType == typeof(NullObject))
{
parameterRating.AddExactMatch();
continue;
}
if (thisType.FoundMatchingType.IsInterface && TypeHelpers.ImplementsInterface(otherType.FoundMatchingType, thisType.FoundMatchingType))
{
parameterRating.AddCastableMatch();
continue;
}
if (TypeHelpers.IsImplicitCastableTo(otherType.FoundMatchingType, thisType.FoundMatchingType))
{
parameterRating.AddCastableMatch();
continue;
}
if (TypeHelpers.InheritFromClass(otherType.FoundMatchingType, thisType.FoundMatchingType, true, false))
{
parameterRating.AddInheritanceLevel(TypeHelpers.InheritFromClassLevel(otherType.FoundMatchingType, thisType.FoundMatchingType));
continue;
}
return(parameterRating.SetFailed());
}
if (!thisType.IsOptional)
{
return(parameterRating.SetFailed());
}
}
return(parameterRating);
}