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public BindInvoke ( |
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| binder | An instance of the |
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| args | An array of |
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| return | ||
/// <summary>
/// Performs the binding of the dynamic invoke operation.
/// </summary>
/// <param name="target">The target of the dynamic invoke operation.</param>
/// <param name="args">An array of arguments of the dynamic invoke 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.BindInvoke(this, args));
}
/// <summary>
/// Performs the binding of the dynamic invoke operation.
/// </summary>
/// <param name="target">The target of the dynamic invoke operation.</param>
/// <param name="args">An array of arguments of the dynamic invoke 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, nameof(target));
ContractUtils.RequiresNotNullItems(args, nameof(args));
return target.BindInvoke(this, args);
}
/// <summary>
/// Performs the binding of the dynamic invoke operation.
/// </summary>
/// <param name="target">The target of the dynamic invoke operation.</param>
/// <param name="args">An array of arguments of the dynamic invoke operation.</param>
/// <returns>The <see cref="DynamicMetaObject"/> representing the result of the binding.</returns>
public sealed override DynamicMetaObject Bind(DynamicMetaObject target, DynamicMetaObject[] args)
{
ArgumentNullException.ThrowIfNull(target);
ContractUtils.RequiresNotNullItems(args, nameof(args));
return(target.BindInvoke(this, args));
}
/// <summary>
/// Tries to perform binding of the dynamic invoke operation.
/// </summary>
/// <param name="binder">An instance of the <see cref="GetMemberBinder"/> that represents the details of the dynamic operation.</param>
/// <param name="instance">The target of the dynamic operation. </param>
/// <param name="args">An array of <see cref="DynamicMetaObject"/> instances - arguments to the invoke member operation.</param>
/// <param name="result">The new <see cref="DynamicMetaObject"/> representing the result of the binding.</param>
/// <returns>true if operation was bound successfully; otherwise, false.</returns>
public static bool TryBindInvoke(InvokeBinder binder, DynamicMetaObject instance, DynamicMetaObject[] args, out DynamicMetaObject result) {
if (TryGetMetaObject(ref instance)) {
result = instance.BindInvoke(binder, args);
return true;
} else {
result = null;
return false;
}
}
public static bool TryBindInvoke(InvokeBinder binder, DynamicMetaObject instance, DynamicMetaObject[] args, out DynamicMetaObject result) {
ContractUtils.RequiresNotNull(binder, "binder");
ContractUtils.RequiresNotNull(instance, "instance");
ContractUtils.RequiresNotNull(args, "args");
if (TryGetMetaObject(ref instance)) {
//
// Demand Full Trust to proceed with the binding.
//
new PermissionSet(PermissionState.Unrestricted).Demand();
result = instance.BindInvoke(binder, args);
return true;
} else {
result = null;
return false;
}
}
/// <summary>
/// Tries to perform binding of the dynamic invoke operation.
/// </summary>
/// <param name="binder">An instance of the <see cref="InvokeBinder"/> that represents the details of the dynamic operation.</param>
/// <param name="instance">The target of the dynamic operation. </param>
/// <param name="args">An array of <see cref="DynamicMetaObject"/> instances - arguments to the invoke member operation.</param>
/// <param name="result">The new <see cref="DynamicMetaObject"/> representing the result of the binding.</param>
/// <returns>true if operation was bound successfully; otherwise, false.</returns>
public static bool TryBindInvoke(InvokeBinder binder, DynamicMetaObject instance, DynamicMetaObject[] args, out DynamicMetaObject result) {
ContractUtils.RequiresNotNull(binder, "binder");
ContractUtils.RequiresNotNull(instance, "instance");
ContractUtils.RequiresNotNull(args, "args");
if (TryGetMetaObjectInvoke(ref instance)) {
result = instance.BindInvoke(binder, args);
return true;
} else {
result = null;
return false;
}
}
public sealed override DynamicMetaObject Bind(DynamicMetaObject target, DynamicMetaObject[] args) {
ContractUtils.RequiresNotNull(target, "target");
ContractUtils.RequiresNotNull(target, "args");
// there must be only one argument and it is always object[].
// see SplatCallSite.Invoke
Debug.Assert(args.Length == 1);
Debug.Assert(args[0] != null);
Debug.Assert(args[0].Expression.Type == typeof(object[]));
// We know it is an array.
DynamicMetaObject arg = args[0];
Expression argAsArrayExpr = arg.Expression;
object[] argValues = (object[])arg.Value;
int argLen = argValues.Length;
DynamicMetaObject[] splattedArgs = new DynamicMetaObject[argLen];
ArgumentInfo[] arginfos = new ArgumentInfo[argLen];
for (int i = 0; i < argLen; i++) {
Expression argExpr = Expression.ArrayIndex(
argAsArrayExpr,
Expression.Constant(i)
);
splattedArgs[i] = new DynamicMetaObject(
argExpr,
BindingRestrictions.Empty,
argValues[i]
);
arginfos[i] = Expression.ByRefArgument(i);
}
BindingRestrictions arrayLenRestriction = BindingRestrictions.GetExpressionRestriction(
Expression.Equal(
Expression.ArrayLength(
argAsArrayExpr
),
Expression.Constant(argLen)
)
);
ComInvokeAction invokeBinder = new ComInvokeAction(arginfos);
DynamicMetaObject innerAction = target.BindInvoke(invokeBinder, splattedArgs);
BindingRestrictions restrictions =
target.Restrictions.
Merge(arg.Restrictions).
Merge(arrayLenRestriction).
Merge(innerAction.Restrictions);
return new DynamicMetaObject(
innerAction.Expression,
restrictions
);
}
public sealed override DynamicMetaObject Bind(DynamicMetaObject target, DynamicMetaObject[] args)
{
ContractUtils.RequiresNotNull(target, "target");
ContractUtils.RequiresNotNullItems<DynamicMetaObject>(args, "args");
return target.BindInvoke(this, args);
}
