nushell/crates/nu-protocol/src
Jakub Žádník 3148acd3a4
Recursively export constants from modules (#10049)
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# Description
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https://github.com/nushell/nushell/pull/9773 introduced constants to
modules and allowed to export them, but only within one level. This PR:
* allows recursive exporting of constants from all submodules
* fixes submodule imports in a list import pattern
* makes sure exported constants are actual constants

Should unblock https://github.com/nushell/nushell/pull/9678

### Example:
```nushell
module spam {
    export module eggs {
        export module bacon {
            export const viking = 'eats'
        }
    }
}

use spam 
print $spam.eggs.bacon.viking  # prints 'eats'

use spam [eggs]
print $eggs.bacon.viking  # prints 'eats'

use spam eggs bacon viking
print $viking  # prints 'eats'
```

### Limitation 1:

Considering the above `spam` module, attempting to get `eggs bacon` from
`spam` module doesn't work directly:
```nushell
use spam [ eggs bacon ]  # attempts to load `eggs`, then `bacon`
use spam [ "eggs bacon" ]  # obviously wrong name for a constant, but doesn't work also for commands
```

Workaround (for example):
```nushell
use spam eggs
use eggs [ bacon ]

print $bacon.viking  # prints 'eats'
```

I'm thinking I'll just leave it in, as you can easily work around this.
It is also a limitation of the import pattern in general, not just
constants.

### Limitation 2:

`overlay use` successfully imports the constants, but `overlay hide`
does not hide them, even though it seems to hide normal variables
successfully. This needs more investigation.

# User-Facing Changes
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Allows recursive constant exports from submodules.

# Tests + Formatting
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2023-08-20 14:51:35 +02:00
..
ast Recursively export constants from modules (#10049) 2023-08-20 14:51:35 +02:00
engine Recursively export constants from modules (#10049) 2023-08-20 14:51:35 +02:00
value Fix duration type to not report months or years (#9632) 2023-08-08 06:24:09 -05:00
alias.rs Refactor scope commands (#10023) 2023-08-17 11:58:38 +03:00
cli_error.rs remove nu_cli crate dependency from nu_std (#8807) 2023-04-08 13:53:43 +02:00
config.rs nu-table/ Add table.indent configuration (#9983) 2023-08-11 08:37:16 -05:00
did_you_mean.rs Suggest existing variables on not found (#8902) 2023-05-02 18:17:14 +03:00
example.rs remove unused imports: Deserialize, Serialize compiler warning for nu-protocol/src/example.rs (#8514) 2023-03-18 11:45:12 -07:00
exportable.rs Module: support defining const and use const variables inside of function (#9773) 2023-08-01 07:09:52 +08:00
id.rs Add virtual path abstraction layer (#9245) 2023-05-23 23:48:50 +03:00
lev_distance.rs Suggest existing variables on not found (#8902) 2023-05-02 18:17:14 +03:00
lib.rs Suggest existing variables on not found (#8902) 2023-05-02 18:17:14 +03:00
module.rs Recursively export constants from modules (#10049) 2023-08-20 14:51:35 +02:00
parse_error.rs Input output checking (#9680) 2023-07-14 15:20:35 +12:00
pipeline_data.rs Revert #8395 "Treat empty pipelines as pass-through" (#9472) 2023-06-20 20:27:18 +12:00
plugin_signature.rs Rename main to script name when running scripts (#9948) 2023-08-12 05:58:49 +12:00
shell_error.rs Add additional span to IncorrectValue error (#10036) 2023-08-18 20:47:05 +03:00
signature.rs Rename misused "deprecation" to removal (#10000) 2023-08-15 07:17:31 +12:00
span.rs Use variable names directly in the format strings (#7906) 2023-01-29 19:37:54 -06:00
syntax_shape.rs Nothing return type (#9935) 2023-08-07 18:10:01 +12:00
ty.rs allow tables to have annotations (#9613) 2023-07-07 11:06:09 +02:00
util.rs move BufferedReader out of nu-command (#7697) 2023-01-06 15:22:17 -08:00
variable.rs Fix broken constants in scopes (#9679) 2023-07-14 00:02:05 +03:00