RFR: 7903788: preparation towards json configuration for jextract tool

[Maurizio Cimadamore]

On Fri, 16 Aug 2024 11:49:29 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.

build.gradle line 62:

> 60:     options.release = 22
> 61:     options.compilerArgs << "--enable-preview"
> 62:     options.compilerArgs << "-Xlint:unchecked"

Are there many of these? Would be preferrable to fix them in place with `@SuppressWarnings`

src/main/java/org/openjdk/jextract/json/parser/JWCC.java line 32:

> 30:  * Comments are stripped and are not present in the parsed result.
> 31:  */
> 32: public final class JWCC {

This class (and related test) don't seem very useful. I think we can just drop them

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PR Review Comment: https://git.openjdk.org/jextract/pull/257#discussion_r1719752291
PR Review Comment: https://git.openjdk.org/jextract/pull/257#discussion_r1719753537