/// <summary>
/// Provides the implementation for operations that invoke a member. Classes derived from the <see
/// cref="T:System.Dynamic.DynamicObject" /> class can override this method to specify dynamic behavior for operations such as calling a method.
/// </summary>
/// <param name="binder"> Provides information about the dynamic operation. The binder.Name property provides the name of the member on which the dynamic operation is performed. For example, for the statement sampleObject.SampleMethod(100), where sampleObject is an instance of the class derived from the <see
/// cref="T:System.Dynamic.DynamicObject" /> class, binder.Name returns "SampleMethod". The binder.IgnoreCase property specifies whether the member name is case-sensitive. </param>
/// <param name="args"> The arguments that are passed to the object member during the invoke operation. For example, for the statement sampleObject.SampleMethod(100), where sampleObject is derived from the <see
/// cref="T:System.Dynamic.DynamicObject" /> class, <paramref name="args" /> [0] is equal to 100. </param>
/// <param name="result"> The result of the member invocation. </param>
/// <returns> true if the operation is successful; otherwise, false. If this method returns false, the run-time binder of the language determines the behavior. (In most cases, a language-specific run-time exception is thrown.) </returns>
public override bool TryInvokeMember(InvokeMemberBinder binder, object[] args, out object result)
{
result = new Currying(_target, binder.Name, Util.NameArgsIfNecessary(binder.CallInfo, args), _totalArgCount);
return true;
}
/// <summary>
/// Provides the implementation for operations that invoke an object. Classes derived from the <see
/// cref="T:System.Dynamic.DynamicObject" /> class can override this method to specify dynamic behavior for operations such as invoking an object or a delegate.
/// </summary>
/// <param name="binder"> Provides information about the invoke operation. </param>
/// <param name="args"> The arguments that are passed to the object during the invoke operation. For example, for the sampleObject(100) operation, where sampleObject is derived from the <see
/// cref="T:System.Dynamic.DynamicObject" /> class, <paramref name="args[0]" /> is equal to 100. </param>
/// <param name="result"> The result of the object invocation. </param>
/// <returns> true if the operation is successful; otherwise, false. If this method returns false, the run-time binder of the language determines the behavior. (In most cases, a language-specific run-time exception is thrown. </returns>
public override bool TryInvoke(InvokeBinder binder, object[] args, out object result)
{
var tNamedArgs = Util.NameArgsIfNecessary(binder.CallInfo, args);
var tNewArgs = _args.Concat(tNamedArgs).ToArray();
if (_totalArgCount.HasValue && (_totalArgCount - Args.Length - args.Length > 0))
//Not Done currying
{
result = new Currying(Target, MemberName, tNewArgs,
TotalArgCount, InvocationKind);
return true;
}
var tInvokeDirect = String.IsNullOrWhiteSpace(_memberName);
var tDel = _target as Delegate;
if (tInvokeDirect && binder.CallInfo.ArgumentNames.Count == 0 && _target is Delegate)
//Optimization for direct delegate calls
{
result = tDel.FastDynamicInvoke(tNewArgs);
return true;
}
Invocation tInvocation;
if (binder.CallInfo.ArgumentNames.Count == 0) //If no argument names we can cache the callsite
{
CacheableInvocation tCacheableInvocation;
if (!_cacheableInvocation.TryGetValue(tNewArgs.Length, out tCacheableInvocation)) {
tCacheableInvocation = new CacheableInvocation(InvocationKind, _memberName, argCount: tNewArgs.Length, context: _target);
_cacheableInvocation[tNewArgs.Length] = tCacheableInvocation;
}
tInvocation = tCacheableInvocation;
} else {
tInvocation = new Invocation(InvocationKind, _memberName);
}
result = tInvocation.Invoke(_target, tNewArgs);
return true;
}