public override DynamicMetaObject FallbackInvoke (DynamicMetaObject target, DynamicMetaObject[] args, DynamicMetaObject errorSuggestion)
{
var b = new CSharpInvokeBinder (flags, callingContext, argumentInfo);
// TODO: Is errorSuggestion ever used?
return b.Defer (target, args);
}
public override DynamicMetaObject FallbackInvoke(DynamicMetaObject target, DynamicMetaObject[] args, DynamicMetaObject errorSuggestion)
{
var b = new CSharpInvokeBinder(flags, callingContext, argumentInfo);
// TODO: Is errorSuggestion ever used?
return(b.Defer(target, args));
}
/// <summary>
/// DynamicOperatorRewriter in EE generates call to this method to dynamically invoke a method.
/// </summary>
/// <param name="methodArgs">Array that contains method arguments. The first element is an object on which method should be called.</param>
/// <param name="argTypes">Type of each argument in methodArgs.</param>
/// <param name="argFlags">Flags describing each argument.</param>
/// <param name="methodName">Name of a method to invoke.</param>
/// <param name="accessibilityContext">Type that determines context in which method should be called.</param>
/// <param name="typeArguments">Generic type arguments if there are any.</param>
/// <returns>Result of method invocation.</returns>
public static object TryEvalMethodVarArgs(
object[] methodArgs,
Type[] argTypes,
CSharpArgumentInfoFlags[] argFlags,
string methodName,
Type accessibilityContext,
Type[] typeArguments)
{
Type[] delegateSignatureTypes = null;
CSharpArgumentInfo[] argInfos = null;
CreateDelegateSignatureAndArgumentInfos(
methodArgs,
argTypes,
argFlags,
out delegateSignatureTypes,
out argInfos);
CallSiteBinder binder;
if (string.IsNullOrEmpty(methodName))
{
//null or empty indicates delegate invocation.
binder = new CSharpInvokeBinder(
CSharpCallFlags.ResultDiscarded,
accessibilityContext,
argInfos);
}
else
{
binder = new CSharpInvokeMemberBinder(
CSharpCallFlags.ResultDiscarded,
methodName,
accessibilityContext,
typeArguments,
argInfos);
}
return(CreateDelegateAndInvoke(delegateSignatureTypes, binder, methodArgs));
}
/// <summary>
/// Performs the binding of the dynamic invoke operation if the target dynamic object cannot bind.
/// </summary>
/// <param name="target">The target of the dynamic invoke operation.</param>
/// <param name="args">The arguments of the dynamic invoke operation.</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 FallbackInvoke(DynamicMetaObject target, DynamicMetaObject[] args, DynamicMetaObject errorSuggestion)
{
CSharpInvokeBinder c = new CSharpInvokeBinder(Flags, CallingContext, _argumentInfo);
return(c.Defer(target, args));
}
private bool DeferBinding(
DynamicMetaObjectBinder payload,
ArgumentObject[] arguments,
DynamicMetaObject[] args,
Dictionary<int, LocalVariableSymbol> dictionary,
out DynamicMetaObject deferredBinding)
{
// This method deals with any deferrals we need to do. We check deferrals up front
// and bail early if we need to do them.
// (1) InvokeMember deferral.
//
// This is the deferral for the d.Foo() scenario where Foo actually binds to a
// field or property, and not a method group that is invocable. We defer to
// the standard GetMember/Invoke pattern.
if (payload is CSharpInvokeMemberBinder)
{
ICSharpInvokeOrInvokeMemberBinder callPayload = payload as ICSharpInvokeOrInvokeMemberBinder;
int arity = callPayload.TypeArguments != null ? callPayload.TypeArguments.Count : 0;
MemberLookup mem = new MemberLookup();
EXPR callingObject = CreateCallingObjectForCall(callPayload, arguments, dictionary);
Debug.Assert(_bindingContext.ContextForMemberLookup() != null);
SymWithType swt = _symbolTable.LookupMember(
callPayload.Name,
callingObject,
_bindingContext.ContextForMemberLookup(),
arity,
mem,
(callPayload.Flags & CSharpCallFlags.EventHookup) != 0,
true);
if (swt != null && swt.Sym.getKind() != SYMKIND.SK_MethodSymbol)
{
// The GetMember only has one argument, and we need to just take the first arg info.
CSharpGetMemberBinder getMember = new CSharpGetMemberBinder(callPayload.Name, false, callPayload.CallingContext, new CSharpArgumentInfo[] { callPayload.ArgumentInfo[0] });
// The Invoke has the remaining argument infos. However, we need to redo the first one
// to correspond to the GetMember result.
CSharpArgumentInfo[] argInfos = new CSharpArgumentInfo[callPayload.ArgumentInfo.Count];
callPayload.ArgumentInfo.CopyTo(argInfos, 0);
argInfos[0] = CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null);
CSharpInvokeBinder invoke = new CSharpInvokeBinder(callPayload.Flags, callPayload.CallingContext, argInfos);
DynamicMetaObject[] newArgs = new DynamicMetaObject[args.Length - 1];
Array.Copy(args, 1, newArgs, 0, args.Length - 1);
deferredBinding = invoke.Defer(getMember.Defer(args[0]), newArgs);
return true;
}
}
deferredBinding = null;
return false;
}
/// <summary>
/// Performs the binding of the dynamic invoke operation if the target dynamic object cannot bind.
/// </summary>
/// <param name="target">The target of the dynamic invoke operation.</param>
/// <param name="args">The arguments of the dynamic invoke operation.</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 FallbackInvoke(DynamicMetaObject target, DynamicMetaObject[] args, DynamicMetaObject errorSuggestion)
{
CSharpInvokeBinder c = new CSharpInvokeBinder(_flags, _callingContext, _argumentInfo);
return c.Defer(target, args);
}