mirror of
https://github.com/nushell/nushell
synced 2025-01-08 19:29:08 +00:00
df94052180
* 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>
116 lines
3.1 KiB
Rust
116 lines
3.1 KiB
Rust
use nu_engine::CallExt;
|
|
use nu_protocol::ast::Call;
|
|
use nu_protocol::engine::{Command, EngineState, Stack};
|
|
use nu_protocol::{
|
|
Category, Example, IntoPipelineData, PipelineData, ShellError, Signature, Span, SyntaxShape,
|
|
Type, Value,
|
|
};
|
|
use std::{
|
|
sync::atomic::Ordering,
|
|
thread,
|
|
time::{Duration, Instant},
|
|
};
|
|
|
|
const CTRL_C_CHECK_INTERVAL: Duration = Duration::from_millis(100);
|
|
|
|
#[derive(Clone)]
|
|
pub struct Sleep;
|
|
|
|
impl Command for Sleep {
|
|
fn name(&self) -> &str {
|
|
"sleep"
|
|
}
|
|
|
|
fn usage(&self) -> &str {
|
|
"Delay for a specified amount of time."
|
|
}
|
|
|
|
fn signature(&self) -> Signature {
|
|
Signature::build("sleep")
|
|
.input_output_types(vec![(Type::Nothing, Type::Nothing)])
|
|
.required("duration", SyntaxShape::Duration, "time to sleep")
|
|
.rest("rest", SyntaxShape::Duration, "additional time")
|
|
.category(Category::Platform)
|
|
}
|
|
|
|
fn search_terms(&self) -> Vec<&str> {
|
|
vec!["delay", "wait", "timer"]
|
|
}
|
|
|
|
fn run(
|
|
&self,
|
|
engine_state: &EngineState,
|
|
stack: &mut Stack,
|
|
call: &Call,
|
|
_input: PipelineData,
|
|
) -> Result<PipelineData, ShellError> {
|
|
fn duration_from_i64(val: i64) -> Duration {
|
|
Duration::from_nanos(if val < 0 { 0 } else { val as u64 })
|
|
}
|
|
|
|
let duration: i64 = call.req(engine_state, stack, 0)?;
|
|
let rest: Vec<i64> = call.rest(engine_state, stack, 1)?;
|
|
|
|
let total_dur =
|
|
duration_from_i64(duration) + rest.into_iter().map(duration_from_i64).sum::<Duration>();
|
|
|
|
let ctrlc_ref = &engine_state.ctrlc.clone();
|
|
let start = Instant::now();
|
|
loop {
|
|
thread::sleep(CTRL_C_CHECK_INTERVAL);
|
|
if start.elapsed() >= total_dur {
|
|
break;
|
|
}
|
|
|
|
if let Some(ctrlc) = ctrlc_ref {
|
|
if ctrlc.load(Ordering::SeqCst) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
Ok(Value::Nothing { span: call.head }.into_pipeline_data())
|
|
}
|
|
|
|
fn examples(&self) -> Vec<Example> {
|
|
vec![
|
|
Example {
|
|
description: "Sleep for 1sec",
|
|
example: "sleep 1sec",
|
|
result: Some(Value::Nothing {
|
|
span: Span::test_data(),
|
|
}),
|
|
},
|
|
// Example {
|
|
// description: "Sleep for 3sec",
|
|
// example: "sleep 1sec 1sec 1sec",
|
|
// result: None,
|
|
// },
|
|
// Example {
|
|
// description: "Send output after 1sec",
|
|
// example: "sleep 1sec; echo done",
|
|
// result: None,
|
|
// },
|
|
]
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::Sleep;
|
|
|
|
#[test]
|
|
fn examples_work_as_expected() {
|
|
use crate::test_examples;
|
|
use std::time::Instant;
|
|
|
|
let start = Instant::now();
|
|
test_examples(Sleep {});
|
|
|
|
let elapsed = start.elapsed();
|
|
|
|
// only examples with actual output are run
|
|
assert!(elapsed >= std::time::Duration::from_secs(1));
|
|
assert!(elapsed < std::time::Duration::from_secs(2));
|
|
}
|
|
}
|