DynamicMetaObject ResolveOverload(DynamicMetaObject target, DynamicMetaObject[] args, MethodInfo[] methods, BindingRestrictions additionalRestrictions = null)
{
OverloadResolver or;
if (target != null)
{
List<DynamicMetaObject> tmp = args.ToList();
tmp.Insert(0, target);
args = tmp.ToArray();
or = this._languageContext.OverloadResolverFactory.CreateOverloadResolver(args, new CallSignature(args.Length), CallTypes.None);
}
else
{
or = this._languageContext.OverloadResolverFactory.CreateOverloadResolver(args, new CallSignature(args.Length), CallTypes.None);
}
BindingTarget bt = or.ResolveOverload(this.Name, methods, NarrowingLevel.None, NarrowingLevel.All);
BindingRestrictions restrictions = bt.RestrictedArguments != null ? bt.RestrictedArguments.GetAllRestrictions() : BindingRestrictions.Empty;
if (!bt.Success)
{
foreach (DynamicMetaObject mo in args)
restrictions = restrictions.Merge(BindingRestrictions.GetTypeRestriction(mo.Expression, mo.GetLimitType()));
return DefaultBinder.MakeError(or.MakeInvalidParametersError(bt), restrictions, typeof(object));
}
if(additionalRestrictions != null)
restrictions = restrictions.Merge(additionalRestrictions);
Expression callExpression = bt.MakeExpression();
if (callExpression.Type == typeof(void))
callExpression = Expression.Block(new[] { callExpression, Expression.Constant(null) });
else if (callExpression.Type != typeof(object))
callExpression = Expression.Convert(callExpression, typeof(object));
return new DynamicMetaObject(callExpression, restrictions);
}