hg: penrose/penrose: 1. Update Penrose demos to support JSON format module info.

[Paul Sandoz]

On Jul 5, 2012, at 7:55 AM, Shi Jun Zhang wrote:
> 
>> 
>> 
>>> The resolver is independent from the JSON module metadata,
>>> because the module metadata is internally represented in the same way,
>>> regardless of whether it was read from a module-info.json or a
>>> module-info.class file.
>>> 
>>> With the module-info.java you get this warning earlier, during the
>>> javac process as it converts the .java file into a .class file. The
>>> .json file does not need to be compiled, but it would be good if the
>>> javac compiler could validate it in the future. BTW the error message
>>> from javac doesn't tell you why the resolution failed either right
>>> now...
>>> 
>> The resolver will also be used by javac, so i would expect an error when compiling such a module.
>> 
>> Was the JSON module declaration modified after compilation?
>> 
>> Paul.
>> 
> The module-info.json will not be compiled. We didn't do any changes in javac.
> 

Clarification: by compilation, i meant compilation of the module.

When javac compiles a module it will use the resolver, the resolver in turn will use module decoration information. So if you did not get a ConfigurationException when compiling the module but did when you installed the module then either the module decoration was modified after the module compilation or something odd is gong on.

Paul.