use nu_engine::get_full_help;
use nu_protocol::{
ast::Call,
engine::{Command, EngineState, Stack},
Category, IntoPipelineData, PipelineData, ShellError, Signature, Type, Value,
};
#[derive(Clone)]
pub struct Overlay;
impl Command for Overlay {
fn name(&self) -> &str {
"overlay"
}
fn signature(&self) -> Signature {
Signature::build("overlay")
.category(Category::Core)
.input_output_types(vec![(Type::Nothing, Type::String)])
}
fn usage(&self) -> &str {
"Commands for manipulating overlays."
}
fn extra_usage(&self) -> &str {
r#"This command is a parser keyword. For details, check:
https://www.nushell.sh/book/thinking_in_nu.html
You must use one of the following subcommands. Using this command as-is will only produce this help message."#
}
fn is_parser_keyword(&self) -> bool {
true
}
fn run(
&self,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
_input: PipelineData,
) -> Result<PipelineData, ShellError> {
Ok(Value::string(
get_full_help(
&Overlay.signature(),
&[],
engine_state,
stack,
self.is_parser_keyword(),
),
call.head,
)
.into_pipeline_data())
}
}