/// <summary>
/// Try to compare the lhs and rhs. Throws and exception if comparison returns null. Returns -1/0/+1 otherwise.
/// </summary>
public static int Compare(ComparisonStorage /*!*/ comparisonStorage, object lhs, object rhs)
{
var compare = comparisonStorage.CompareSite;
var result = compare.Target(compare, lhs, rhs);
if (result != null)
{
return(Protocols.ConvertCompareResult(comparisonStorage, result));
}
else
{
throw RubyExceptions.MakeComparisonError(comparisonStorage.Context, lhs, rhs);
}
}
public static int ConvertCompareResult(ComparisonStorage /*!*/ comparisonStorage, object /*!*/ result)
{
Debug.Assert(result != null);
var greaterThanSite = comparisonStorage.GreaterThanSite;
if (RubyOps.IsTrue(greaterThanSite.Target(greaterThanSite, result, 0)))
{
return(1);
}
var lessThanSite = comparisonStorage.LessThanSite;
if (RubyOps.IsTrue(lessThanSite.Target(lessThanSite, result, 0)))
{
return(-1);
}
return(0);
}