nushell/crates
JT 62e34b69b3
New commands: break, continue, return, and loop (#7230)
# Description

This adds `break`, `continue`, `return`, and `loop`.

* `break` - breaks out a loop
* `continue` - continues a loop at the next iteration
* `return` - early return from a function call
* `loop` - loop forever (until the loop hits a break)

Examples:
```
for i in 1..10 {
    if $i == 5 {
       continue
    } 
    print $i
}
```

```
for i in 1..10 {
    if $i == 5 {
        break
    } 
    print $i
}
```

```
def foo [x] {
    if true {
        return 2
    }
    $x
}
foo 100
```

```
loop { print "hello, forever" }
```

```
[1, 2, 3, 4, 5] | each {|x| 
    if $x > 3 { break }
    $x
}
```

# User-Facing Changes

Adds the above commands.

# Tests + Formatting

Don't forget to add tests that cover your changes.

Make sure you've run and fixed any issues with these commands:

- `cargo fmt --all -- --check` to check standard code formatting (`cargo
fmt --all` applies these changes)
- `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used -A
clippy::needless_collect` to check that you're using the standard code
style
- `cargo test --workspace` to check that all tests pass

# After Submitting

If your PR had any user-facing changes, update [the
documentation](https://github.com/nushell/nushell.github.io) after the
PR is merged, if necessary. This will help us keep the docs up to date.
2022-11-25 09:39:16 +13:00
..
nu_plugin_custom_values removes unused features. (#6938) 2022-11-12 18:44:56 +13:00
nu_plugin_example bump to dev release 0.71.1 (#7064) 2022-11-09 13:18:34 +01:00
nu_plugin_gstat bump to dev release 0.71.1 (#7064) 2022-11-09 13:18:34 +01:00
nu_plugin_inc bump to dev release 0.71.1 (#7064) 2022-11-09 13:18:34 +01:00
nu_plugin_python Further edits to help messages (#6913) 2022-10-26 09:36:42 -07:00
nu_plugin_query removes unused features. (#6938) 2022-11-12 18:44:56 +13:00
nu-cli New commands: break, continue, return, and loop (#7230) 2022-11-25 09:39:16 +13:00
nu-color-config fix color_config crashing on nonstring data (#7215) 2022-11-23 23:32:25 +01:00
nu-command New commands: break, continue, return, and loop (#7230) 2022-11-25 09:39:16 +13:00
nu-engine New commands: break, continue, return, and loop (#7230) 2022-11-25 09:39:16 +13:00
nu-glob bump to dev release 0.71.1 (#7064) 2022-11-09 13:18:34 +01:00
nu-json Fixed json parsing (#7175) 2022-11-23 17:00:00 +13:00
nu-parser Remove And and Or pipeline elements (#7229) 2022-11-25 07:06:12 +13:00
nu-path bump to dev release 0.71.1 (#7064) 2022-11-09 13:18:34 +01:00
nu-plugin Friendly error message for missing plugin executable (#7163) 2022-11-19 12:12:18 +01:00
nu-pretty-hex bump to dev release 0.71.1 (#7064) 2022-11-09 13:18:34 +01:00
nu-protocol New commands: break, continue, return, and loop (#7230) 2022-11-25 09:39:16 +13:00
nu-system Turn off foreground processes on macOS (#7068) 2022-11-10 07:39:09 +13:00
nu-table [WIP] table: Change Record view in expand-mode (#6885) 2022-11-16 08:03:56 -06:00
nu-term-grid bump to dev release 0.71.1 (#7064) 2022-11-09 13:18:34 +01:00
nu-test-support bump to dev release 0.71.1 (#7064) 2022-11-09 13:18:34 +01:00
nu-utils Add auto-expanding table view to default config (#7172) 2022-11-20 20:52:38 +13:00
old bump to dev release 0.71.1 (#7064) 2022-11-09 13:18:34 +01:00
README.md Remove old nushell/merge engine-q 2022-02-07 14:54:06 -05:00

Nushell core libraries and plugins

These sub-crates form both the foundation for Nu and a set of plugins which extend Nu with additional functionality.

Foundational libraries are split into two kinds of crates:

  • Core crates - those crates that work together to build the Nushell language engine
  • Support crates - a set of crates that support the engine with additional features like JSON support, ANSI support, and more.

Plugins are likewise also split into two types:

  • Core plugins - plugins that provide part of the default experience of Nu, including access to the system properties, processes, and web-connectivity features.
  • Extra plugins - these plugins run a wide range of different capabilities like working with different file types, charting, viewing binary data, and more.