/// <summary>
/// Performs the binding of the dynamic set index operation if the target dynamic object cannot bind.
/// </summary>
/// <param name="target">The target of the dynamic set index operation.</param>
/// <param name="indexes">The arguments of the dynamic set index operation.</param>
/// <param name="value">The value to set to the collection.</param>
/// <param name="errorSuggestion">The binding result to use if binding fails, or null.</param>
/// <returns>The <see cref="DynamicMetaObject"/> representing the result of the binding.</returns>
public override DynamicMetaObject FallbackSetIndex(DynamicMetaObject target, DynamicMetaObject[] indexes, DynamicMetaObject value, DynamicMetaObject errorSuggestion)
{
#if ENABLECOMBINDER
DynamicMetaObject com;
if (!BinderHelper.IsWindowsRuntimeObject(target) && ComBinder.TryBindSetIndex(this, target, indexes, value, out com))
{
return(com);
}
#endif
return(BinderHelper.Bind(this, _binder, BinderHelper.Cons(target, indexes, value), _argumentInfo, errorSuggestion));
}
public override DynamicMetaObject FallbackSetIndex(DynamicMetaObject target, DynamicMetaObject[] indexes, DynamicMetaObject value, DynamicMetaObject?errorSuggestion)
{
// First try COM binding.
if (ComBinder.TryBindSetIndex(this, target, indexes, value, out var result))
{
return(result);
}
// Defer if any object has no value so that we evaulate their Expressions and nest a
// CallSite for the InvokeMember.
if (!target.HasValue || !value.HasValue || Array.Exists(indexes, a => !a.HasValue))
{
var deferArgs = new DynamicMetaObject[indexes.Length + 2];
indexes.CopyTo(deferArgs.AsSpan(1));
deferArgs[0] = target;
deferArgs[^ 1] = value;
public override DynamicMetaObject FallbackSetIndex(DynamicMetaObject target, DynamicMetaObject[] indexes, DynamicMetaObject value, DynamicMetaObject errorSuggestion)
{
if (ComBinder.TryBindSetIndex(this, target, indexes, value, out DynamicMetaObject result))
{
return(result);
}
if (!target.HasValue || !value.HasValue || indexes.Any(x => !x.HasValue))
{
return(Defer(target, indexes));
}
var arrayAccess = RuntimeHelpers.GetIndexingExpression(target, indexes);
var setIndex = Expression.Assign(arrayAccess, Expression.Convert(value.Expression, value.LimitType));
var restrictions = RuntimeHelpers.GetTargetArgsRestrictions(target, indexes, false);
return(new DynamicMetaObject(RuntimeHelpers.EnsureObjectResult(setIndex), restrictions));
}
