RFR: Initial code for a JSON-based module descriptor.

[Shi Jun Zhang]

On 4/19/2012 8:05 PM, David Bosschaert wrote:
> Following the discussion about module descriptor formats on jigsaw-dev
> and penrose-dev [1] I did an initial implementation that supports a
> JSON-based module descriptor.
>
> The JSON module descriptor is located inside the module in
> META-INF/module-info.json.
> The existing module-info.class file is still supported but if a
> module-info.json file is found this is used instead.
> I wrote a very small JSON parser, its class files are currently<
> 10kb, and it can possibly be made even smaller.
> Besides the unit tests _JSONParser and _ModuleInfoReader there is also
> a system-level test hello-json.sh that effectively compiles, installs
> and runs a small demo module with JSON metadata.
> For example module-info.json files see inside the hello-json.sh and
> module-info-reader.sh test scripts.
>
> Some other things to note:
> * Not all features of module-info.class are yet supported, this is
> just a starting point.
> * The fact that both module-info.class and module-info.json are
> supported side-by-side makes for some awkward code here and there.
> This should only be temporary.
> * The JSON parser is currently in the java.lang.module package, but
> it's pretty much general-purpose, so I guess it could be moved to a
> package like java.util or something like that.
>
> You can find the webrev here:
> http://cr.openjdk.java.net/~davidb/mijson/webrev.01/
>
> David
>
> [1] http://mail.openjdk.java.net/pipermail/penrose-dev/2012-April/000038.html
>
Hi David,

Another comment, java.util.jar.JarFile.getModuleInfo() also needs to be 
modified accordingly.

-- 
Regards,

Shi Jun Zhang