Comments on: ColdFusion arguments.callee

By: Sean

Sean — Tue, 09 Feb 2010 20:06:43 +0000

This got me part the way:
thisCFCPage = GetPageContext().getFusionContext().getPagePath();

Here’s what’s sad: There is this gem:

GetPageContext().getFusionContext().methodCalledName

but it’s a private property and there is no getter function. ARRRGGGHHHHH!!!!!!

By: Elliott

Elliott — Wed, 22 Jul 2009 09:58:40 +0000

@Ben

Seems my blog ate your code sample. Doh! I need to dump wordpress or upgrade and get code comments and blog post code working. It was a real pain to make this post too.

Can you post your code on http://gist.github.com/ perhaps?

I don’t know what you mean by a different scope. I have a bunch of test cases here and they all work.

By: Ben Nadel

Ben Nadel — Tue, 21 Jul 2009 13:54:06 +0000

I can’t seem to get this to work if the function pointer is in another scope such as:

At this point, it looks like “test” is not a declared field in the template taken from the exception tag context.

Thoughts??

By: aMeen

aMeen — Sat, 18 Jul 2009 07:32:25 +0000

Got Lost … I gave up
:(

By: Adam Cameron

Adam Cameron — Fri, 17 Jul 2009 14:51:04 +0000

Nope: no blog, me. Well I do, but not a technical one. I keep thinking about it, but I so seldom have anything worthwhile saying, I don’t see the point.

Most of the things I think of to say stem from what I read on other people’s blogs, so I just stick my oar in as-and-when. Not that today’s effort was a shining example: I’m usually better than that!

–
Adam

By: Ben Nadel

Ben Nadel — Fri, 17 Jul 2009 12:03:12 +0000

Elliott,

Very interesting stuff! I failed after 2 hours and I’m satisfied in saying that I would NEVER have come up with this at all :D Nice work!

By: Elliott

Elliott — Fri, 17 Jul 2009 12:02:30 +0000

Hah, it’s all good. Btw, do you have a blog? You’re kind of a ghost around these parts.

By: Adam Cameron

Adam Cameron — Fri, 17 Jul 2009 11:57:09 +0000

Yep, as per other discussion, you’re dead right. Sorry for the confusion (albeit it’s mostly on my part, it seems ;-)

Cheers.

–
Adam

By: Elliott

Elliott — Fri, 17 Jul 2009 11:32:25 +0000

@Adam

Okay I just found your function in the “other forum”. Your getCurrentFunctionName() does *not* do what this blog post is about, or what the entire thread is about that you posted that function on. It doesn’t address the ER either.

Your post does *not* return the called function name. It returns the declared function name.

I’d suggest you reread the ER and this blog post again. You seem to be confused. :)

By: Elliott

Elliott — Fri, 17 Jul 2009 10:38:33 +0000

@Adam

I don’t remember you posting anything remotely like this. My suggested function for getting the called name also doesn’t address the use case for the function in this blog post.

arguments.udfs.func1 = myFunction;
arguments.udfs.func1(1);

The called name here is func1, but knowing it doesn’t let us get a reference to ourself from inside that function since there’s no way to know the UDF is inside another struct without scanning every scope.

I’m curious to know what function you wrote that you think solves this as there’s no other way to get a function pointer to yourself regardless of the calling context.

Especially in a case like this which models passing a function to another function like map or fold.

// template A.cfm
function a() {}
request.a = a;

// template B.cfm
b = request.a;
request.a = 1;
b();

What “technique” do you think is more simple that solves this?