/// <summary>
/// Attempts to bind to an operator Call method.
/// </summary>
private TargetInfo TryGetOperatorTargets(MetaObject self, MetaObject[] args, object target, CallSignature signature)
{
MethodBase[] targets;
Type targetType = CompilerHelpers.GetType(target);
MemberGroup callMembers = GetMember(OldCallAction.Make(this, signature), targetType, "Call");
List <MethodBase> callTargets = new List <MethodBase>();
foreach (MemberTracker mi in callMembers)
{
if (mi.MemberType == TrackerTypes.Method)
{
MethodInfo method = ((MethodTracker)mi).Method;
if (method.IsSpecialName)
{
callTargets.Add(method);
}
}
}
Expression instance = null;
if (callTargets.Count > 0)
{
targets = callTargets.ToArray();
instance = Ast.Convert(self.Expression, CompilerHelpers.GetType(target));
return(new TargetInfo(null, ArrayUtils.Insert(self, args), targets));
}
return(null);
}
public override Expression Bind(object[] args, ReadOnlyCollection <ParameterExpression> parameters, LabelTarget returnLabel)
{
ContractUtils.RequiresNotNull(args, "args");
CodeContext cc = ExtractCodeContext(ref args);
ContractUtils.Requires(args.Length > 0);
IOldDynamicObject ido = args[0] as IOldDynamicObject;
ContractUtils.RequiresNotNull(ido, "args");
OldCallAction ca = OldCallAction.Make(cc.LanguageContext.Binder, _args);
var builder = new RuleBuilder(parameters, returnLabel);
if (!ido.GetRule(ca, cc, args, builder))
{
throw new InvalidOperationException("Cannot perform call.");
}
return(builder.CreateRule());
}