feat: add support to restart identity on truncate

[RafaelGSS]

ref #41

Not sure about the implementation itself, I never played with Nearley before.

[RafaelGSS]

Actually, It translates truncate table example restart identity to truncate table example that is not expected. Any thoughts?

[oguimbal]

Technically, that parses, but the fact that restart identity is present should influence the generated AST.

In another hand, when it is NOT present, the generated AST should be the same as previously.

Moreover, if you implement restart identity, you should also implement continue identity ... see the spec.

Meaning something like:

delete_truncate ->  (kw_truncate %kw_table:?) array_of[table_ref] ((kw_restart | kw_continue) kw_identity):? {% x => track(x, {
                            type: 'truncate table',
                            tables: x[1],
                            ...x[2] && { identity: toStr(x[2][0]) },
                        })

and modify the corresponding AST typing definition:

export interface TruncateStatement {
     type: 'truncate table',
    //  [.....]
    identity?: 'restart' | 'continue';
}

[oguimbal]

Thanks :)

[oguimbal]

Released as [email protected] along with some non trivial breaking changes (sorry for that if it impacts you, I'll create a release notes)

[oguimbal]

see here

[RafaelGSS]

@oguimbal any plans to use it in pg-mem?