bool __CanCastParam(DmdType fromParam, DmdType toParam)
{
if (fromParam.IsEquivalentTo(toParam))
{
return(true);
}
var fromParamCorType = fromParam.__GetVerifierCorElementType();
if (__IsObjRef(fromParamCorType))
{
return(fromParam.__CanCastTo(toParam));
}
else if (__IsGenericVariable(fromParamCorType))
{
if (!fromParam.__ConstrainedAsObjRef())
{
return(false);
}
return(fromParam.__CanCastTo(toParam));
}
else if (__IsPrimitiveType(fromParamCorType))
{
var toParamCorType = toParam.__GetVerifierCorElementType();
if (__IsPrimitiveType(toParamCorType))
{
if (toParamCorType == fromParamCorType)
{
return(true);
}
if ((toParamCorType != DDN.ElementType.Boolean) &&
(fromParamCorType != DDN.ElementType.Boolean) &&
(toParamCorType != DDN.ElementType.Char) &&
(fromParamCorType != DDN.ElementType.Char))
{
if ((__Size(toParamCorType) == __Size(fromParamCorType)) &&
(__IsFloat(toParamCorType) == __IsFloat(fromParamCorType)))
{
return(true);
}
}
}
}
return(false);
}
static bool __CanCastTo(DmdType from, DmdType to)
{
if ((object)from == null)
{
throw new ArgumentNullException(nameof(from));
}
if ((object)to == null)
{
throw new ArgumentNullException(nameof(to));
}
bool res;
var r = from.__CanCastToNoGC(to);
if (r == __CastResult.MaybeCast)
{
res = from.__CanCastTo(to);
}
else
{
res = r == __CastResult.CanCast;
}
if (!res && to.IsNullable && !from.__IsTypeDesc())
{
if (__IsNullableForType(to, from))
{
res = true;
}
}
return(res);
}
