[Laszlo-dev] Plan for platform-independent .lzo's (LPP-7184)

[P T Withington]

Currently our .lzo technology which allows you to write a compressed,  
linkable library from a library of LZX, only works for the swf8  
platform.  We'd like to make this technology work across all platforms.

Here's a rough sketch of how I plan to do this:

Make a new subclass of JavascriptGenerator, DHTMLGenerator, and move  
the JS1-specific transforms into that subclass.  DHTMLGenerator will  
be parallel to SWF9Generator, which is already a subclass of  
JavascriptGenerator.  There may be some simplifications I can make  
there, because some of the methods of SWF9Generator are just there to  
undo JS1-specific transforms that shouldn't have been in the  
superclass in the first place.

[If we wanted to continue to maintain swf8 as a platform, it would  
make sense to make a new subclass of JavascriptGenerator,  
SWF8Generator, and move only the byte-code generation from  
CodeGenerator to there, leaving behind the duplicate platform- 
independent tranformations that are in CodeGenerator.]

Once JavascriptGenerator is not longer making platform-specific  
transformations, make another subclass, LZSGenerator, that generates  
the script portion of .lzo's.  This will output to the 'lzs' platform,  
the extended Javascript that our script compiler takes as an input.   
It will also handle the minimizing of internal variable names and the  
compression of the output.

Comments and input welcome.