Declare input and output types of commands (#6796)

* Add failing test that list of ints and floats is List<Number>

* Start defining subtype relation

* Make it possible to declare input and output types for commands

- Enforce them in tests

* Declare input and output types of commands

* Add formatted signatures to `help commands` table

* Revert SyntaxShape::Table -> Type::Table change

* Revert unnecessary derive(Hash) on SyntaxShape

Co-authored-by: JT <547158+jntrnr@users.noreply.github.com>
This commit is contained in:
Dan Davison
2022-11-09 16:55:05 -05:00
committed by GitHub
parent f878276de7
commit df94052180
238 changed files with 2315 additions and 756 deletions

View File

@ -1,6 +1,6 @@
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{Category, Example, PipelineData, Signature, SyntaxShape, Value};
use nu_protocol::{Category, Example, PipelineData, Signature, SyntaxShape, Type, Value};
#[derive(Clone)]
pub struct Def;
@ -16,6 +16,7 @@ impl Command for Def {
fn signature(&self) -> nu_protocol::Signature {
Signature::build("def")
.input_output_types(vec![(Type::Nothing, Type::Nothing)])
.required("def_name", SyntaxShape::String, "definition name")
.required("params", SyntaxShape::Signature, "parameters")
.required(