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8f634f4140
Came from [this discussion](https://discord.com/channels/601130461678272522/1348791953784836147/1349699872059691038) on discord with @fdncred # Description Small refactoring where I rename commands from "SubCommand" to its proper name. Motivations: better clarity (although subjective), better searchable, consistency. The only commands I didn't touch were "split list" and "ansi gradient" because of name clashes. # User-Facing Changes None # Tests + Formatting cargo fmt and clippy OK # After Submitting nothing required
103 lines
2.9 KiB
Rust
103 lines
2.9 KiB
Rust
use crate::math::{
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reducers::{reducer_for, Reduce},
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utils::run_with_function,
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};
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use nu_engine::command_prelude::*;
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#[derive(Clone)]
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pub struct MathMax;
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impl Command for MathMax {
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fn name(&self) -> &str {
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"math max"
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}
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fn signature(&self) -> Signature {
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Signature::build("math max")
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.input_output_types(vec![
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(Type::List(Box::new(Type::Number)), Type::Number),
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(Type::List(Box::new(Type::Duration)), Type::Duration),
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(Type::List(Box::new(Type::Filesize)), Type::Filesize),
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(Type::List(Box::new(Type::Any)), Type::Any),
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(Type::Range, Type::Number),
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(Type::table(), Type::record()),
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(Type::record(), Type::record()),
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])
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.allow_variants_without_examples(true)
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.category(Category::Math)
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}
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fn description(&self) -> &str {
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"Returns the maximum of a list of values, or of columns in a table."
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}
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fn search_terms(&self) -> Vec<&str> {
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vec!["maximum", "largest"]
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}
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fn is_const(&self) -> bool {
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true
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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<PipelineData, ShellError> {
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run_with_function(call, input, maximum)
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}
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fn run_const(
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&self,
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_working_set: &StateWorkingSet,
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call: &Call,
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input: PipelineData,
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) -> Result<PipelineData, ShellError> {
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run_with_function(call, input, maximum)
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}
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fn examples(&self) -> Vec<Example> {
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vec![
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Example {
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description: "Find the maximum of a list of numbers",
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example: "[-50 100 25] | math max",
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result: Some(Value::test_int(100)),
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},
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Example {
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description: "Find the maxima of the columns of a table",
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example: "[{a: 1 b: 3} {a: 2 b: -1}] | math max",
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result: Some(Value::test_record(record! {
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"a" => Value::test_int(2),
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"b" => Value::test_int(3),
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})),
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},
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Example {
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description: "Find the maximum of a list of dates",
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example: "[2022-02-02 2022-12-30 2012-12-12] | math max",
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result: Some(Value::test_date(
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"2022-12-30 00:00:00Z".parse().unwrap_or_default(),
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)),
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},
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]
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}
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}
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pub fn maximum(values: &[Value], span: Span, head: Span) -> Result<Value, ShellError> {
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let max_func = reducer_for(Reduce::Maximum);
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max_func(Value::nothing(head), values.to_vec(), span, head)
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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(MathMax {})
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}
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}
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