/// <summary>
/// Performs the binding of the dynamic delete index operation.
/// </summary>
/// <param name="target">The target of the dynamic delete index operation.</param>
/// <param name="args">An array of arguments of the dynamic delete index operation.</param>
/// <returns>The <see cref="DynamicMetaObject"/> representing the result of the binding.</returns>
public sealed override DynamicMetaObject Bind(DynamicMetaObject target, DynamicMetaObject[] args)
{
ContractUtils.RequiresNotNull(target, "target");
ContractUtils.RequiresNotNullItems(args, "args");
return(target.BindDeleteIndex(this, args));
}
public override DynamicMetaObject Bind(DynamicMetaObject target, DynamicMetaObject[] args)
{
var obj = target.BindDeleteIndex(new CompatibilityDeleteIndexBinder(_context, CallInfo), args);
return(new DynamicMetaObject(Microsoft.Scripting.Ast.Utils.Try(
obj.Expression,
Expression.Constant(1L, typeof(object))
).Catch(typeof(MissingMemberException),
Expression.Constant(0L, typeof(object))
), obj.Restrictions));
}
private static bool DeleteIndex(this DynamicMetaObject target, object[] indices)
{
var paramNames = Enumerable.Range(0, indices.Length).Select(index => "a" + index).ToArray();
var paramExprs = paramNames.Select((paramName, index) => Expression.Parameter(GetParamTypeForArg(indices[index]), paramName)).ToArray();
var parameters = paramExprs.Select(paramExpr => new DynamicMetaObject(paramExpr, BindingRestrictions.Empty)).ToArray();
var bindResult = target.BindDeleteIndex(new DynamicDeleteIndexBinder(paramNames), parameters);
var block = Expression.Block(Expression.Label(CallSiteBinder.UpdateLabel), bindResult.Expression);
try
{
Invoke(block, paramExprs, indices);
return(true);
}
catch (TargetInvocationException exception)
{
if (exception.InnerException is InvalidDynamicOperationException)
{
return(false);
}
throw;
}
}
public override DynamicMetaObject BindDeleteIndex(DeleteIndexBinder binder, DynamicMetaObject[] indexes)
{
return(AddRestrictions(_metaForwardee.BindDeleteIndex(binder, indexes)));
}
public override DynamicMetaObject BindDeleteIndex(DeleteIndexBinder binder, DynamicMetaObject[] indexes)
{
return(scriptItem.PostProcessBindResult(metaDynamic.BindDeleteIndex(binder, indexes)));
}
public override DynamicMetaObject BindDeleteIndex(DeleteIndexBinder binder, DynamicMetaObject[] indexes) => _innerMetaObject.BindDeleteIndex(binder, indexes);
public override DynamicMetaObject BindDeleteIndex(DeleteIndexBinder binder, DynamicMetaObject[] indexes)
{
return(binder.FallbackDeleteIndex(_baseMetaObject,
indexes,
AddTypeRestrictions(_metaObject.BindDeleteIndex(binder, indexes))));
}
public override DynamicMetaObject BindDeleteIndex(DeleteIndexBinder binder, DynamicMetaObject[] indexes)
{
return(metaObject.BindDeleteIndex(binder, indexes));
}
/// <summary>
/// Performs the binding of the dynamic delete index operation.
/// </summary>
/// <param name="target">The target of the dynamic delete index operation.</param>
/// <param name="args">An array of arguments of the dynamic delete index operation.</param>
/// <returns>The <see cref="DynamicMetaObject"/> representing the result of the binding.</returns>
public sealed override DynamicMetaObject Bind(DynamicMetaObject target, DynamicMetaObject[] args) {
ContractUtils.RequiresNotNull(target, "target");
ContractUtils.RequiresNotNullItems(args, "args");
return target.BindDeleteIndex(this, args);
}
