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https://github.com/nushell/nushell.git
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cc39069e13
Those allocations are all small and insignificant in the grand scheme of things and the optimizer may be able to resolve some of those but better to be nice anyways. Primarily inspired by the new [`clippy::assigning_clones`](https://rust-lang.github.io/rust-clippy/master/index.html#/assigning_clones) - **Avoid reallocs with `clone_from` in `nu-parser`** - **Avoid realloc on assignment in `Stack`** - **Fix `clippy::assigning_clones` in `nu-cli`** - **Reuse allocations in `nu-explore` if possible**
87 lines
2.5 KiB
Rust
87 lines
2.5 KiB
Rust
use super::{default_color_list, ConfigOption, HelpExample, HelpManual, Shortcode, ViewCommand};
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use crate::views::InteractiveView;
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use nu_protocol::{
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engine::{EngineState, Stack},
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Value,
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};
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use std::io::{Error, ErrorKind, Result};
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#[derive(Debug, Default, Clone)]
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pub struct TryCmd {
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command: String,
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}
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impl TryCmd {
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pub fn new() -> Self {
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Self {
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command: String::new(),
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}
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}
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pub const NAME: &'static str = "try";
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}
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impl ViewCommand for TryCmd {
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type View = InteractiveView<'static>;
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fn name(&self) -> &'static str {
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Self::NAME
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}
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fn usage(&self) -> &'static str {
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""
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}
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fn help(&self) -> Option<HelpManual> {
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#[rustfmt::skip]
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let shortcuts = vec![
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Shortcode::new("Up", "", "Switches between input and a output panes"),
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Shortcode::new("Down", "", "Switches between input and a output panes"),
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Shortcode::new("Esc", "", "Switches between input and a output panes"),
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Shortcode::new("Tab", "", "Switches between input and a output panes"),
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];
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#[rustfmt::skip]
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let config_options = vec![
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ConfigOption::boolean(":try options", "In the `:try` REPL, attempt to run the command on every keypress", "try.reactive"),
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ConfigOption::new(":try options", "Change a highlighted menu color", "try.highlighted_color", default_color_list()),
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];
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#[rustfmt::skip]
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let examples = vec![
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HelpExample::new("try", "Open a interactive :try command"),
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HelpExample::new("try open Cargo.toml", "Optionally, you can provide a command which will be run immediately"),
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];
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Some(HelpManual {
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name: "try",
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description: "Opens a panel in which to run Nushell commands and explore their output. The explorer acts like `:table`.",
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arguments: vec![],
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examples,
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input: shortcuts,
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config_options,
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})
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}
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fn parse(&mut self, args: &str) -> Result<()> {
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args.trim().clone_into(&mut self.command);
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Ok(())
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}
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fn spawn(
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&mut self,
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engine_state: &EngineState,
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stack: &mut Stack,
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value: Option<Value>,
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) -> Result<Self::View> {
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let value = value.unwrap_or_default();
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let mut view = InteractiveView::new(value);
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view.init(self.command.clone());
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view.try_run(engine_state, stack)
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.map_err(|e| Error::new(ErrorKind::Other, e))?;
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Ok(view)
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}
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}
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