Feature request: Allow reference to previous expression evaluations in debug console

It's often generally useful to be able to refer to the results of an earlier expression when exploring the state of a program. This is related to #281, but different. And possibly possible to implement.

result.getBlob("details")
> JDBCBlobClient (id=108)
result.getBlob("details").toString()
> "org.hsqldb.jdbc.JDBCBlobClient@63611043" (id=111)
Utils.fromJson(result.getBlob("details").getBinaryStream())
> BuildRequest (id=119)

This could be changed to

result.getBlob("details")
> JDBCBlobClient ($id_108)
$id_108.toString()
> "org.hsqldb.jdbc.JDBCBlobClient@63611043" ($id_111)
Utils.fromJson($id_108.getBinaryStream())
> BuildRequest ($id_119)

This would allow exploring the results from calls where repeating the call would return different results, and would also allow use of APIs that require objects as parameters, for example,

new byte[10000]
> byte[10000] ($id_120)
result.getBlob("details").getBinaryStream().read($id_120, 0, 10000)
> 200
new String($id_120)
> "The string result is displayed here..."

Comece pelo ponto de entrada do console de depuração e examine como as expressões são avaliadas e exibidas. Defina como os resultados anteriores recebem referências como $id_108 e como essas referências podem ser passadas para expressões posteriores; considera-se concluído quando os resultados puderem ser reutilizados sem repetir as chamadas, inclusive como argumentos de objetos ou arrays.