Is there any way to get a list of objects within a running JS engine with a JavaScript command?

[Christoph T.]

I'd like to code an aspect oriented language extension for JavaScript. My aspects should be defined in JavaScript. To weave in my advices I need a list of all objects which are currently available within the current context, to match their names e.g. against a regular expression to find out if the new advice should be woven in. Is there a function within JavaScript I can call to simply get this list?

Thank you very much for your answer in advance.

Christoph

[Stephan Beal]

On Mon, Sep 17, 2012 at 1:55 PM, Christoph T. <tor...@gmail.com> wrote:

I'd like to code an aspect oriented language extension for JavaScript. My aspects should be defined in JavaScript. To weave in my advices I need a list of all objects which are currently available within the current context, to match their names e.g. against a regular expression to find out if the new advice should be woven in. Is there a function within JavaScript I can call to simply get this list?

This can only be done on a per-object basis, but you can get access to the top-level list of objects via the global object with code similar to the following (run in the global scope):

var k, v;

for( k in this ) {

  if(!this.hasOwnProperty(k)) continue;

  v = this[k];

  ... do your bit here ...

} 

AFAIK there is no standard way to get the names of vars from a scope, e.g.:

function foo(){

  var x, y, z;

  ... there is no standard way to derive the names x/y/z here ...

  ... either you know them or you don't ...

}

and i'm not sure that there's even a non-standard way to do it.

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----- stephan beal
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