64f226f7da
Currently implemented as commands Work towards #7073 Add them to the example test harness together with `math round`
62 lines
1.4 KiB
Rust
62 lines
1.4 KiB
Rust
use nu_protocol::ast::Call;
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use nu_protocol::engine::{Command, EngineState, Stack};
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use nu_protocol::{Category, Example, IntoPipelineData, PipelineData, Signature, Type, Value};
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#[derive(Clone)]
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pub struct SubCommand;
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impl Command for SubCommand {
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fn name(&self) -> &str {
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"math pi"
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}
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fn signature(&self) -> Signature {
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Signature::build("math pi")
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.input_output_types(vec![(Type::Any, Type::Float)])
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.category(Category::Math)
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}
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fn usage(&self) -> &str {
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"Returns the mathematical constant π."
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}
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fn search_terms(&self) -> Vec<&str> {
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vec!["trigonometry", "constant"]
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}
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#[allow(clippy::approx_constant)]
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fn examples(&self) -> Vec<Example> {
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vec![Example {
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example: "math pi | math round --precision 2",
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description: "Get the first two decimal digits of π",
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result: Some(Value::test_float(3.14)),
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}]
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}
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fn run(
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&self,
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_engine_state: &EngineState,
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_stack: &mut Stack,
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call: &Call,
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_input: PipelineData,
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) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
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Ok(Value::Float {
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val: std::f64::consts::PI,
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span: call.head,
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}
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.into_pipeline_data())
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}
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}
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#[cfg(test)]
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mod test {
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use super::*;
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#[test]
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fn test_examples() {
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use crate::test_examples;
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test_examples(SubCommand {})
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}
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}
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