That is definitely something I'm thinking of, and as Red pointed out it may not be particularly hard but it will be tricky. Before we decided to stick by ParenScript and DHTML at my startup (we considered switching to Peter Seibel's Javascript generator and writing our own), we were contemplating writing the UI in Flash/Flex, possibly in parallel with the DHTML version. I still think that there is a possibility we might do this in the future, and if we will, it will be by extending ParenScript to target Flash as another platform.
I welcome any contributions to extend ParenScript to generate ECMAScript 4. Let me know if you need any help.
Thanks, Vladimir
On 6/24/07, John Pallister john@synchromesh.com wrote:
Hello list,
While people are discussing future directions for ParenScript, I thought I'd add my two cents.
I am developing systems based around XHTML, X3D and Adobe Flex; in all three cases we have an XML-syntax language with an embedded JavaScript language. Except that X3D uses ECMAScript 2 (which AFAIK is "standard" XHTML JavaScript 1.x) while Flex (i.e. Flash 9) uses ActionScript 3.0, which is an implementation of ECMAScript 262 Revision 4 [1], a.k.a. JavaScript 2.0 [2].
The point is, ECMAScript 4 has a variety of new features (optional static typing, classes, interfaces, packages, generators, list comprehensions etc. - there's a nice overview at [3]) which aren't currently supported by ParenScript. Given that the adoption of ECMAScript 4/JavaScript 2 is a case of when rather than if [4], it would be great if any overhaul of ParenScript could be done with an eye to incorporating some or all of these features in the near future (hopefully by other interested parties such as myself).
The "add a compiler" POV vs. the "keep it simple" perspective echoes the two sides of the JavaScript 2 debate. Since these new language features will be added (and I'm already using them in ActionScript 3), it would be great if they could be added to ParenScript without causing too much inconvenience to those who like it the way it is now.
I would like to help out with this task; I might have some time to spend on it later in the year.
Cheers,
John :^P
[1] http://www.ecmascript-lang.org/ - includes reference impl. in Standard ML [2] "ActionScript 3: The Language of Flex. A Conversation with James Ward, Part I", http://www.artima.com/lejava/articles/actionscript.html [3] http://developer.mozilla.org/presentations/xtech2006/javascript/ [4] http://www.mozilla.org/projects/tamarin/ -- John Pallister john@synchromesh.com Wellington, New Zealand
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