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# Description As part of the refactor to split spans off of Value, this moves to using helper functions to create values, and using `.span()` instead of matching span out of Value directly. Hoping to get a few more helping hands to finish this, as there are a lot of commands to update :) # User-Facing Changes <!-- List of all changes that impact the user experience here. This helps us keep track of breaking changes. --> # 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` to check that you're using the standard code style - `cargo test --workspace` to check that all tests pass (on Windows make sure to [enable developer mode](https://learn.microsoft.com/en-us/windows/apps/get-started/developer-mode-features-and-debugging)) - `cargo run -- -c "use std testing; testing run-tests --path crates/nu-std"` to run the tests for the standard library > **Note** > from `nushell` you can also use the `toolkit` as follows > ```bash > use toolkit.nu # or use an `env_change` hook to activate it automatically > toolkit check pr > ``` --> # 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. --> --------- Co-authored-by: Darren Schroeder <343840+fdncred@users.noreply.github.com> Co-authored-by: WindSoilder <windsoilder@outlook.com>
49 lines
1.3 KiB
Rust
49 lines
1.3 KiB
Rust
use super::super::values::{NuDataFrame, NuLazyFrame};
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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, Type, Value,
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};
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#[derive(Clone)]
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pub struct ToLazyFrame;
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impl Command for ToLazyFrame {
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fn name(&self) -> &str {
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"dfr into-lazy"
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}
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fn usage(&self) -> &str {
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"Converts a dataframe into a lazy dataframe."
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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_output_type(Type::Any, Type::Custom("dataframe".into()))
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.category(Category::Custom("lazyframe".into()))
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}
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fn examples(&self) -> Vec<Example> {
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vec![Example {
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description: "Takes a dictionary and creates a lazy dataframe",
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example: "[[a b];[1 2] [3 4]] | dfr into-lazy",
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result: None,
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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<PipelineData, ShellError> {
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let df = NuDataFrame::try_from_iter(input.into_iter())?;
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let lazy = NuLazyFrame::from_dataframe(df);
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let value = Value::custom_value(Box::new(lazy), call.head);
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Ok(PipelineData::Value(value, None))
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}
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}
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