/// <summary>
/// Produces a rule for the specified Action for the given arguments.
///
/// The default implementation can produce rules for standard .NET types. Languages should
/// override this and provide any custom behavior they need and fallback to the default
/// implementation if no custom behavior is required.
/// </summary>
/// <typeparam name="T">The type of the DynamicSite the rule is being produced for.</typeparam>
/// <param name="action">The Action that is being performed.</param>
/// <param name="args">The arguments to the action as provided from the call site at runtime.</param>
/// <param name="callerContext">The CodeContext that is requesting the rule and should be use</param>
/// <returns></returns>
protected virtual StandardRule <T> MakeRule <T>(CodeContext /*!*/ callerContext, DynamicAction /*!*/ action, object[] /*!*/ args)
{
Contract.RequiresNotNull(callerContext, "callerContext");
Contract.RequiresNotNull(action, "action");
Contract.RequiresNotNull(args, "args");
switch (action.Kind)
{
case DynamicActionKind.Call:
return(new CallBinderHelper <T, CallAction>(callerContext, (CallAction)action, args).MakeRule());
case DynamicActionKind.GetMember:
return(new GetMemberBinderHelper <T>(callerContext, (GetMemberAction)action, args).MakeNewRule());
case DynamicActionKind.SetMember:
return(new SetMemberBinderHelper <T>(callerContext, (SetMemberAction)action, args).MakeNewRule());
case DynamicActionKind.CreateInstance:
return(new CreateInstanceBinderHelper <T>(callerContext, (CreateInstanceAction)action, args).MakeRule());
case DynamicActionKind.DoOperation:
return(new DoOperationBinderHelper <T>(callerContext, (DoOperationAction)action, args).MakeRule());
case DynamicActionKind.DeleteMember:
return(new DeleteMemberBinderHelper <T>(callerContext, (DeleteMemberAction)action, args).MakeRule());
case DynamicActionKind.InvokeMember:
return(new InvokeMemberBinderHelper <T>(callerContext, (InvokeMemberAction)action, args).MakeRule());
case DynamicActionKind.ConvertTo:
return(new ConvertToBinderHelper <T>(callerContext, (ConvertToAction)action, args).MakeRule());
default:
throw new NotImplementedException(action.ToString());
}
}
private static void NoteRuleCreation(DynamicAction action, object[] args)
{
PerfTrack.NoteEvent(PerfTrack.Categories.Rules, "MakeRule " + action.ToString() + " " + CompilerHelpers.GetType(args[0]).Name);
}