private OperatorImplementation FindBaseImplementation(ExpressionType op, Type commonType)
{
var baseKey = new OperatorDispatchKey(op, commonType, commonType);
OperatorImplementations.TryGetValue(baseKey, out OperatorImplementation baseImpl);
return(baseImpl);
}
// Important: returns null if fromType == toType
public virtual UnaryOperatorMethod GetConverter(Type fromType, Type toType)
{
if (fromType == toType)
{
return(x => x);
}
var key = new OperatorDispatchKey(ExpressionType.ConvertChecked, fromType, toType);
return(!OperatorImplementations.TryGetValue(key, out OperatorImplementation impl) ? null : impl.Arg1Converter);
}
