Add command_prelude module (#12291)

# Description
When implementing a `Command`, one must also import all the types
present in the function signatures for `Command`. This makes it so that
we often import the same set of types in each command implementation
file. E.g., something like this:
```rust
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{
    record, Category, Example, IntoInterruptiblePipelineData, IntoPipelineData, PipelineData,
    ShellError, Signature, Span, Type, Value,
};
```

This PR adds the `nu_engine::command_prelude` module which contains the
necessary and commonly used types to implement a `Command`:
```rust
// command_prelude.rs
pub use crate::CallExt;
pub use nu_protocol::{
    ast::{Call, CellPath},
    engine::{Command, EngineState, Stack},
    record, Category, Example, IntoInterruptiblePipelineData, IntoPipelineData, IntoSpanned,
    PipelineData, Record, ShellError, Signature, Span, Spanned, SyntaxShape, Type, Value,
};
```

This should reduce the boilerplate needed to implement a command and
also gives us a place to track the breadth of the `Command` API. I tried
to be conservative with what went into the prelude modules, since it
might be hard/annoying to remove items from the prelude in the future.
Let me know if something should be included or excluded.
This commit is contained in:
Ian Manske
2024-03-26 21:17:30 +00:00
committed by GitHub
parent f8c1e3ac61
commit c747ec75c9
660 changed files with 1634 additions and 4332 deletions

View File

@ -1196,8 +1196,10 @@ mod range {
#[cfg(test)]
mod input_types {
use super::*;
use nu_protocol::ast::Call;
use nu_protocol::{ast::Argument, Category, PipelineData, ShellError, Type};
use nu_protocol::{
ast::{Argument, Call},
Category, PipelineData, ShellError, Type,
};
#[derive(Clone)]
pub struct LsTest;