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https://github.com/nushell/nushell
synced 2025-01-22 01:45:15 +00:00
45fe3be83e
# Description Inspired by #7592 For brevity use `Value::test_{string,int,float,bool}` Includes fixes to commands that were abusing `Span::test_data` in their implementation. Now the call span is used where possible or the explicit `Span::unknonw` is used. ## Command fixes - Fix abuse of `Span::test_data()` in `query_xml` - Fix abuse of `Span::test_data()` in `term size` - Fix abuse of `Span::test_data()` in `seq date` - Fix two abuses of `Span::test_data` in `nu-cli` - Change `Span::test_data` to `Span::unknown` in `keybindings listen` - Add proper call span to `registry query` - Fix span use in `nu_plugin_query` - Fix span assignment in `select` - Use `Span::unknown` instead of `test_data` in more places ## Other - Use `Value::test_int`/`test_float()` consistently - More `test_string` and `test_bool` - Fix unused imports # User-Facing Changes Some commands may now provide more helpful spans for downstream use in errors
74 lines
2 KiB
Rust
74 lines
2 KiB
Rust
use crate::math::reducers::{reducer_for, Reduce};
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use crate::math::utils::run_with_function;
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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, PipelineData, ShellError, Signature, Span, 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 avg"
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}
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fn signature(&self) -> Signature {
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Signature::build("math avg")
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.input_output_types(vec![(Type::List(Box::new(Type::Number)), Type::Number)])
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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 average of a list of numbers"
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}
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fn search_terms(&self) -> Vec<&str> {
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vec!["average", "mean", "statistics"]
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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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run_with_function(call, input, average)
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}
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fn examples(&self) -> Vec<Example> {
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vec![Example {
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description: "Compute the average of a list of numbers",
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example: "[-50 100.0 25] | math avg",
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result: Some(Value::test_float(25.0)),
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}]
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}
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}
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pub fn average(values: &[Value], span: Span, head: &Span) -> Result<Value, ShellError> {
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let sum = reducer_for(Reduce::Summation);
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let total = &sum(Value::int(0, *head), values.to_vec(), span, *head)?;
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match total {
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Value::Filesize { val, span } => Ok(Value::Filesize {
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val: val / values.len() as i64,
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span: *span,
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}),
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Value::Duration { val, span } => Ok(Value::Duration {
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val: val / values.len() as i64,
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span: *span,
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}),
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_ => total.div(*head, &Value::int(values.len() as i64, *head), *head),
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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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