Add infrastructure for experimental options (#16028)

Co-authored-by: Bahex <Bahex@users.noreply.github.com>

crates/nu-command/Cargo.toml

@@ -16,9 +16,11 @@ bench = false
 workspace = true
 
 [dependencies]
+nu-ansi-term = { workspace = true }
 nu-cmd-base = { path = "../nu-cmd-base", version = "0.105.2" }
 nu-color-config = { path = "../nu-color-config", version = "0.105.2" }
 nu-engine = { path = "../nu-engine", version = "0.105.2", default-features = false }
+nu-experimental = { path = "../nu-experimental", version = "0.105.2" }
 nu-glob = { path = "../nu-glob", version = "0.105.2" }
 nu-json = { path = "../nu-json", version = "0.105.2" }
 nu-parser = { path = "../nu-parser", version = "0.105.2" }
@@ -29,7 +31,6 @@ nu-system = { path = "../nu-system", version = "0.105.2" }
 nu-table = { path = "../nu-table", version = "0.105.2" }
 nu-term-grid = { path = "../nu-term-grid", version = "0.105.2" }
 nu-utils = { path = "../nu-utils", version = "0.105.2", default-features = false }
-nu-ansi-term = { workspace = true }
 nuon = { path = "../nuon", version = "0.105.2" }
 
 alphanumeric-sort = { workspace = true }

crates/nu-command/src/debug/experimental_options.rs

@@ -0,0 +1,64 @@
+use nu_engine::command_prelude::*;
+use nu_experimental::Status;
+
+#[derive(Clone)]
+pub struct DebugExperimentalOptions;
+
+impl Command for DebugExperimentalOptions {
+    fn name(&self) -> &str {
+        "debug experimental-options"
+    }
+
+    fn signature(&self) -> Signature {
+        Signature::new(self.name())
+            .input_output_type(
+                Type::Nothing,
+                Type::Table(Box::from([
+                    (String::from("identifier"), Type::String),
+                    (String::from("enabled"), Type::Bool),
+                    (String::from("status"), Type::String),
+                    (String::from("description"), Type::String),
+                ])),
+            )
+            .add_help()
+            .category(Category::Debug)
+    }
+
+    fn description(&self) -> &str {
+        "Show all experimental options."
+    }
+
+    fn run(
+        &self,
+        _engine_state: &EngineState,
+        _stack: &mut Stack,
+        call: &Call,
+        _input: PipelineData,
+    ) -> Result<PipelineData, ShellError> {
+        Ok(PipelineData::Value(
+            Value::list(
+                nu_experimental::ALL
+                    .iter()
+                    .map(|option| {
+                        Value::record(
+                            nu_protocol::record! {
+                                "identifier" => Value::string(option.identifier(), call.head),
+                                "enabled" => Value::bool(option.get(), call.head),
+                                "status" => Value::string(match option.status() {
+                                    Status::OptIn => "opt-in",
+                                    Status::OptOut => "opt-out",
+                                    Status::DeprecatedDiscard => "deprecated-discard",
+                                    Status::DeprecatedDefault => "deprecated-default"
+                                }, call.head),
+                                "description" => Value::string(option.description(), call.head),
+                            },
+                            call.head,
+                        )
+                    })
+                    .collect(),
+                call.head,
+            ),
+            None,
+        ))
+    }
+}

crates/nu-command/src/debug/mod.rs

@@ -1,6 +1,7 @@
 mod ast;
 mod debug_;
 mod env;
+mod experimental_options;
 mod explain;
 mod info;
 mod inspect;
@@ -21,6 +22,7 @@ mod view_span;
 pub use ast::Ast;
 pub use debug_::Debug;
 pub use env::DebugEnv;
+pub use experimental_options::DebugExperimentalOptions;
 pub use explain::Explain;
 pub use info::DebugInfo;
 pub use inspect::Inspect;

crates/nu-command/src/default_context.rs

@@ -153,6 +153,7 @@ pub fn add_shell_command_context(mut engine_state: EngineState) -> EngineState {
             Ast,
             Debug,
             DebugEnv,
+            DebugExperimentalOptions,
             DebugInfo,
             DebugProfile,
             Explain,