5e70d4121a
# Description This PR tries to resolve the overloading issue by going back to our original naming convention for dataframes. So, this PR renames all dataframe commands with a prefix of `dfr`. Some commands like `open-df` were renamed to `dfr open` and things like `into df` were renamed `dfr into-df`. I'm sure we can optimize naming a bit, but it seems to compile now. # User-Facing Changes All dataframe commands are prefixed with dfr. # Tests + Formatting Don't forget to add tests that cover your changes. Make sure you've run and fixed any issues with these commands: - `cargo fmt --all -- --check` to check standard code formatting (`cargo fmt --all` applies these changes) - `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used -A clippy::needless_collect` to check that you're using the standard code style - `cargo test --workspace` to check that all tests pass # After Submitting If your PR had any user-facing changes, update [the documentation](https://github.com/nushell/nushell.github.io) after the PR is merged, if necessary. This will help us keep the docs up to date.
516 lines
14 KiB
Rust
516 lines
14 KiB
Rust
/// Definition of multiple Expression commands using a macro rule
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/// All of these expressions have an identical body and only require
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/// to have a change in the name, description and expression function
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use crate::dataframe::values::{Column, NuDataFrame, NuExpression};
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use nu_protocol::{
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ast::Call,
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engine::{Command, EngineState, Stack},
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Category, Example, PipelineData, ShellError, Signature, Span, Type, Value,
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};
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// The structs defined in this file are structs that form part of other commands
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// since they share a similar name
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macro_rules! expr_command {
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($command: ident, $name: expr, $desc: expr, $examples: expr, $func: ident, $test: ident) => {
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#[derive(Clone)]
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pub struct $command;
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impl Command for $command {
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fn name(&self) -> &str {
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$name
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}
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fn usage(&self) -> &str {
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$desc
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}
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fn signature(&self) -> Signature {
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Signature::build(self.name())
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.input_type(Type::Custom("expression".into()))
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.output_type(Type::Custom("expression".into()))
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.category(Category::Custom("expression".into()))
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}
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fn examples(&self) -> Vec<Example> {
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$examples
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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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let expr = NuExpression::try_from_pipeline(input, call.head)?;
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let expr: NuExpression = expr.into_polars().$func().into();
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Ok(PipelineData::Value(
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NuExpression::into_value(expr, call.head),
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None,
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))
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}
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}
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#[cfg(test)]
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mod $test {
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use super::super::super::test_dataframe::test_dataframe;
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use super::*;
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use crate::dataframe::lazy::aggregate::LazyAggregate;
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use crate::dataframe::lazy::groupby::ToLazyGroupBy;
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#[test]
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fn test_examples() {
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test_dataframe(vec![
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Box::new($command {}),
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Box::new(LazyAggregate {}),
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Box::new(ToLazyGroupBy {}),
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])
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}
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}
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};
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($command: ident, $name: expr, $desc: expr, $examples: expr, $func: ident, $test: ident, $ddof: expr) => {
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#[derive(Clone)]
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pub struct $command;
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impl Command for $command {
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fn name(&self) -> &str {
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$name
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}
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fn usage(&self) -> &str {
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$desc
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}
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fn signature(&self) -> Signature {
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Signature::build(self.name())
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.input_type(Type::Custom("expression".into()))
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.output_type(Type::Custom("expression".into()))
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.category(Category::Custom("expression".into()))
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}
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fn examples(&self) -> Vec<Example> {
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$examples
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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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let expr = NuExpression::try_from_pipeline(input, call.head)?;
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let expr: NuExpression = expr.into_polars().$func($ddof).into();
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Ok(PipelineData::Value(
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NuExpression::into_value(expr, call.head),
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None,
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))
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}
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}
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#[cfg(test)]
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mod $test {
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use super::super::super::test_dataframe::test_dataframe;
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use super::*;
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use crate::dataframe::lazy::aggregate::LazyAggregate;
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use crate::dataframe::lazy::groupby::ToLazyGroupBy;
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#[test]
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fn test_examples() {
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test_dataframe(vec![
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Box::new($command {}),
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Box::new(LazyAggregate {}),
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Box::new(ToLazyGroupBy {}),
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])
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}
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}
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};
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}
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// ExprList command
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// Expands to a command definition for a list expression
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expr_command!(
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ExprList,
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"dfr list",
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"Aggregates a group to a Series",
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vec![Example {
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description: "",
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example: "",
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result: None,
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}],
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list,
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test_list
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);
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// ExprAggGroups command
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// Expands to a command definition for a agg groups expression
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expr_command!(
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ExprAggGroups,
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"dfr agg-groups",
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"creates an agg_groups expression",
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vec![Example {
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description: "",
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example: "",
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result: None,
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}],
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agg_groups,
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test_groups
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);
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// ExprFlatten command
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// Expands to a command definition for a flatten expression
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expr_command!(
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ExprFlatten,
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"dfr flatten",
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"creates a flatten expression",
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vec![Example {
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description: "",
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example: "",
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result: None,
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}],
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flatten,
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test_flatten
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);
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// ExprExplode command
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// Expands to a command definition for a explode expression
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expr_command!(
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ExprExplode,
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"dfr explode",
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"creates an explode expression",
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vec![Example {
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description: "",
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example: "",
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result: None,
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}],
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explode,
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test_explode
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);
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// ExprCount command
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// Expands to a command definition for a count expression
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expr_command!(
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ExprCount,
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"dfr count",
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"creates a count expression",
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vec![Example {
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description: "",
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example: "",
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result: None,
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}],
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count,
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test_count
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);
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// ExprFirst command
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// Expands to a command definition for a count expression
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expr_command!(
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ExprFirst,
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"dfr first",
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"creates a first expression",
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vec![Example {
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description: "Creates a first expression from a column",
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example: "dfr col a | dfr first",
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result: None,
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},],
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first,
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test_first
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);
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// ExprLast command
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// Expands to a command definition for a count expression
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expr_command!(
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ExprLast,
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"dfr last",
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"creates a last expression",
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vec![Example {
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description: "Creates a last expression from a column",
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example: "dfr col a | dfr last",
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result: None,
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},],
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last,
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test_last
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);
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// ExprNUnique command
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// Expands to a command definition for a n-unique expression
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expr_command!(
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ExprNUnique,
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"dfr n-unique",
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"creates a n-unique expression",
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vec![Example {
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description: "Creates a is n-unique expression from a column",
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example: "dfr col a | dfr n-unique",
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result: None,
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},],
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n_unique,
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test_nunique
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);
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// ExprIsNotNull command
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// Expands to a command definition for a n-unique expression
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expr_command!(
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ExprIsNotNull,
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"dfr is-not-null",
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"creates a is not null expression",
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vec![Example {
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description: "Creates a is not null expression from a column",
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example: "dfr col a | dfr is-not-null",
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result: None,
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},],
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is_not_null,
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test_is_not_null
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);
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// ExprIsNull command
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// Expands to a command definition for a n-unique expression
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expr_command!(
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ExprIsNull,
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"dfr is-null",
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"creates a is null expression",
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vec![Example {
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description: "Creates a is null expression from a column",
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example: "dfr col a | dfr is-null",
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result: None,
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},],
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is_null,
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test_is_null
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);
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// ExprNot command
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// Expands to a command definition for a not expression
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expr_command!(
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ExprNot,
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"dfr expr-not",
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"creates a not expression",
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vec![Example {
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description: "Creates a not expression",
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example: "(dfr col a) > 2) | dfr expr-not",
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result: None,
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},],
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not,
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test_not
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);
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// ExprMax command
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// Expands to a command definition for max aggregation
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expr_command!(
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ExprMax,
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"dfr max",
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"Creates a max expression",
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vec![Example {
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description: "Max aggregation for a group-by",
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example: r#"[[a b]; [one 2] [one 4] [two 1]]
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| dfr into-df
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| dfr group-by a
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| dfr agg (dfr col b | dfr max)"#,
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result: Some(
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NuDataFrame::try_from_columns(vec![
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Column::new(
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"a".to_string(),
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vec![Value::test_string("one"), Value::test_string("two")],
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),
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Column::new(
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"b".to_string(),
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vec![Value::test_int(4), Value::test_int(1)],
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),
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])
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.expect("simple df for test should not fail")
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.into_value(Span::test_data()),
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),
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},],
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max,
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test_max
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);
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// ExprMin command
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// Expands to a command definition for min aggregation
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expr_command!(
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ExprMin,
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"dfr min",
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"Creates a min expression",
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vec![Example {
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description: "Min aggregation for a group-by",
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example: r#"[[a b]; [one 2] [one 4] [two 1]]
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| dfr into-df
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| dfr group-by a
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| dfr agg (dfr col b | dfr min)"#,
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result: Some(
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NuDataFrame::try_from_columns(vec![
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Column::new(
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"a".to_string(),
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vec![Value::test_string("one"), Value::test_string("two")],
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),
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Column::new(
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"b".to_string(),
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vec![Value::test_int(2), Value::test_int(1)],
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),
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])
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.expect("simple df for test should not fail")
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.into_value(Span::test_data()),
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),
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},],
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min,
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test_min
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);
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// ExprSum command
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// Expands to a command definition for sum aggregation
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expr_command!(
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ExprSum,
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"dfr sum",
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"Creates a sum expression for an aggregation",
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vec![Example {
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description: "Sum aggregation for a group-by",
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example: r#"[[a b]; [one 2] [one 4] [two 1]]
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| dfr into-df
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| dfr group-by a
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| dfr agg (dfr col b | dfr sum)"#,
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result: Some(
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NuDataFrame::try_from_columns(vec![
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Column::new(
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"a".to_string(),
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vec![Value::test_string("one"), Value::test_string("two")],
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),
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Column::new(
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"b".to_string(),
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vec![Value::test_int(6), Value::test_int(1)],
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),
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])
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.expect("simple df for test should not fail")
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.into_value(Span::test_data()),
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),
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},],
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sum,
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test_sum
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);
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// ExprMean command
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// Expands to a command definition for mean aggregation
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expr_command!(
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ExprMean,
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"dfr mean",
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"Creates a mean expression for an aggregation",
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vec![Example {
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description: "Mean aggregation for a group-by",
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example: r#"[[a b]; [one 2] [one 4] [two 1]]
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| dfr into-df
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| dfr group-by a
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| dfr agg (dfr col b | dfr mean)"#,
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result: Some(
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NuDataFrame::try_from_columns(vec![
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Column::new(
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"a".to_string(),
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vec![Value::test_string("one"), Value::test_string("two")],
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),
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Column::new(
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"b".to_string(),
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vec![Value::test_float(3.0), Value::test_float(1.0)],
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),
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])
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.expect("simple df for test should not fail")
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.into_value(Span::test_data()),
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),
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},],
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mean,
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test_mean
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);
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// ExprMedian command
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// Expands to a command definition for median aggregation
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expr_command!(
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ExprMedian,
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"dfr median",
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"Creates a median expression for an aggregation",
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vec![Example {
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description: "Median aggregation for a group-by",
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example: r#"[[a b]; [one 2] [one 4] [two 1]]
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| dfr into-df
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| dfr group-by a
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| dfr agg (dfr col b | dfr median)"#,
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result: Some(
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NuDataFrame::try_from_columns(vec![
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Column::new(
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"a".to_string(),
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vec![Value::test_string("one"), Value::test_string("two")],
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),
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Column::new(
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"b".to_string(),
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vec![Value::test_float(3.0), Value::test_float(1.0)],
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),
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])
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.expect("simple df for test should not fail")
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.into_value(Span::test_data()),
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),
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},],
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median,
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test_median
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);
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// ExprStd command
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// Expands to a command definition for std aggregation
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expr_command!(
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ExprStd,
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"dfr std",
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"Creates a std expression for an aggregation",
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vec![Example {
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description: "Std aggregation for a group-by",
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example: r#"[[a b]; [one 2] [one 2] [two 1] [two 1]]
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| dfr into-df
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| dfr group-by a
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| dfr agg (dfr col b | dfr std)"#,
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result: Some(
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NuDataFrame::try_from_columns(vec![
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Column::new(
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"a".to_string(),
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vec![Value::test_string("one"), Value::test_string("two")],
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),
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Column::new(
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"b".to_string(),
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vec![Value::test_float(0.0), Value::test_float(0.0)],
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),
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])
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.expect("simple df for test should not fail")
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.into_value(Span::test_data()),
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),
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},],
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std,
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test_std,
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0
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);
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// ExprVar command
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// Expands to a command definition for var aggregation
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expr_command!(
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ExprVar,
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"dfr var",
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"Create a var expression for an aggregation",
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vec![Example {
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description: "Var aggregation for a group-by",
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example: r#"[[a b]; [one 2] [one 2] [two 1] [two 1]]
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| dfr into-df
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| dfr group-by a
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| dfr agg (dfr col b | dfr var)"#,
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result: Some(
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NuDataFrame::try_from_columns(vec![
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Column::new(
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"a".to_string(),
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vec![Value::test_string("one"), Value::test_string("two")],
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),
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Column::new(
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"b".to_string(),
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vec![Value::test_float(0.0), Value::test_float(0.0)],
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),
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])
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.expect("simple df for test should not fail")
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.into_value(Span::test_data()),
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),
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},],
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var,
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test_var,
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0
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);
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