public override DynamicMetaObject FallbackUnaryOperation(DynamicMetaObject target, DynamicMetaObject errorSuggestion)
{
if (!target.HasValue)
{
return(Defer(target));
}
DynamicMetaObject firstVarargs;
if (RuntimeHelpers.TryGetFirstVarargs(target, out firstVarargs))
{
return(FallbackUnaryOperation(firstVarargs, errorSuggestion));
}
Expr expression;
switch (Operation)
{
case ExprType.Negate:
expression = NegateOp(target);
break;
case ExprType.Not:
expression = NotOp(target);
break;
default:
throw new ArgumentOutOfRangeException();
}
return(new DynamicMetaObject(Expr.Convert(expression, typeof(object)), RuntimeHelpers.MergeTypeRestrictions(target)));
}
public override DynamicMetaObject FallbackBinaryOperation(DynamicMetaObject target, DynamicMetaObject arg, DynamicMetaObject errorSuggestion)
{
if (!target.HasValue || !arg.HasValue)
{
return(Defer(target, arg));
}
DynamicMetaObject targetFirst, argFirst;
if (RuntimeHelpers.TryGetFirstVarargs(target, out targetFirst) | RuntimeHelpers.TryGetFirstVarargs(arg, out argFirst))
{
return(FallbackBinaryOperation(targetFirst, argFirst, errorSuggestion));
}
Expr expression = null;
switch (BinaryExprTypes[Operation])
{
case BinaryOpType.Relational:
expression = Relational(target, arg);
break;
case BinaryOpType.Logical:
expression = Logical(target, arg);
break;
case BinaryOpType.Numeric:
expression = Numeric(target, arg);
break;
}
if (expression == null)
{
expression = MetamethodFallbacks.BinaryOp(context, Operation, target, arg);
}
return(new DynamicMetaObject(Expr.Convert(expression, typeof(object)), RuntimeHelpers.MergeTypeRestrictions(target, arg)));
}