RFR: 7903788: preparation towards json configuration for jextract tool [v4]

[Maurizio Cimadamore]

On Fri, 16 Aug 2024 14:06:18 GMT, Athijegannathan Sundararajan <sundar at openjdk.org> wrote:

>> * adding json skara code into org.openjdk.jextract.json.parser package. Minor changes done - pretty printing, JSONValue is made sealed and access changes (private final fields).
>> * org.openjdk.jextract.json package for JSON interface to the rest of the jextract tool. Main interface is org.openjdk.jextract.json.JSON. parse and toString methods to convert record into JSON String and vice versa.
>> * Other classes are public mainly for testing purposes. build.gradle adjusted with the required --add-exports clauses so that jextract module does not have to export the new json packages.
>
> Athijegannathan Sundararajan has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - removed WildcardType (review suggestion)
>  - renamed JSONObjects.getRecordProperty to be getRecordComponentValue. (review suggestion)

The parser addition and tests look ok.
I'm not overall convinced on the need for the mapper classes, and I think we should proceed w/o it for now, and see how bad it is.

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Changes requested by mcimadamore (Reviewer).

PR Review: https://git.openjdk.org/jextract/pull/257#pullrequestreview-2242850081