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# Description Adds support for the following operations on plugin custom values, in addition to `to_base_value` which was already present: - `follow_path_int()` - `follow_path_string()` - `partial_cmp()` - `operation()` - `Drop` (notification, if opted into with `CustomValue::notify_plugin_on_drop`) There are additionally customizable methods within the `Plugin` and `StreamingPlugin` traits for implementing these functions in a way that requires access to the plugin state, as a registered handle model such as might be used in a dataframes plugin would. `Value::append` was also changed to handle custom values correctly. # User-Facing Changes - Signature of `CustomValue::follow_path_string` and `CustomValue::follow_path_int` changed to give access to the span of the custom value itself, useful for some errors. - Plugins using custom values have to be recompiled because the engine will try to do custom value operations that aren't supported - Plugins can do more things 🎉 # Tests + Formatting Tests were added for all of the new custom values functionality. - 🟢 `toolkit fmt` - 🟢 `toolkit clippy` - 🟢 `toolkit test` - 🟢 `toolkit test stdlib` # After Submitting - [ ] Document protocol reference `CustomValueOp` variants: - [ ] `FollowPathInt` - [ ] `FollowPathString` - [ ] `PartialCmp` - [ ] `Operation` - [ ] `Dropped` - [ ] Document `notify_on_drop` optional field in `PluginCustomValue` |
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nu-protocol
The nu-protocol crate holds the definitions of structs/traits that are used throughout Nushell. This gives us one way to expose them to many other crates, as well as make these definitions available to each other, without causing mutually recursive dependencies.