ListStream touchup (#12524)

# Description

Does some misc changes to `ListStream`:
- Moves it into its own module/file separate from `RawStream`.
- `ListStream`s now have an associated `Span`.
- This required changes to `ListStreamInfo` in `nu-plugin`. Note sure if
this is a breaking change for the plugin protocol.
- Hides the internals of `ListStream` but also adds a few more methods.
- This includes two functions to more easily alter a stream (these take
a `ListStream` and return a `ListStream` instead of having to go through
the whole `into_pipeline_data(..)` route).
  -  `map`: takes a `FnMut(Value) -> Value`
  - `modify`: takes a function to modify the inner stream.
This commit is contained in:
Ian Manske
2024-05-05 16:00:59 +00:00
committed by GitHub
parent 3143ded374
commit e879d4ecaf
106 changed files with 957 additions and 874 deletions

View File

@ -60,8 +60,8 @@ impl PluginCommand for Generate {
call: &EvaluatedCall,
_input: PipelineData,
) -> Result<PipelineData, LabeledError> {
let head = call.head;
let engine = engine.clone();
let call = call.clone();
let initial: Value = call.req(0)?;
let closure = call.req(1)?;
@ -83,9 +83,9 @@ impl PluginCommand for Generate {
})
.transpose()
})
.map(|result| result.unwrap_or_else(|err| Value::error(err, call.head)))
.map(|result| result.unwrap_or_else(|err| Value::error(err, head)))
})
.into_pipeline_data(None))
.into_pipeline_data(head, None))
}
}

View File

@ -50,12 +50,11 @@ impl PluginCommand for Seq {
call: &EvaluatedCall,
_input: PipelineData,
) -> Result<PipelineData, LabeledError> {
let head = call.head;
let first: i64 = call.req(0)?;
let last: i64 = call.req(1)?;
let span = call.head;
let iter = (first..=last).map(move |number| Value::int(number, span));
let list_stream = ListStream::from_stream(iter, None);
Ok(PipelineData::ListStream(list_stream, None))
let iter = (first..=last).map(move |number| Value::int(number, head));
Ok(ListStream::new(iter, head, None).into())
}
}