mirror of
https://github.com/nushell/nushell.git
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e4226def16
This commit extracts five new crates:
- nu-source, which contains the core source-code handling logic in Nu,
including Text, Span, and also the pretty.rs-based debug logic
- nu-parser, which is the parser and expander logic
- nu-protocol, which is the bulk of the types and basic conveniences
used by plugins
- nu-errors, which contains ShellError, ParseError and error handling
conveniences
- nu-textview, which is the textview plugin extracted into a crate
One of the major consequences of this refactor is that it's no longer
possible to `impl X for Spanned<Y>` outside of the `nu-source` crate, so
a lot of types became more concrete (Value became a concrete type
instead of Spanned<Value>, for example).
This also turned a number of inherent methods in the main nu crate into
plain functions (impl Value {} became a bunch of functions in the
`value` namespace in `crate::data::value`).
52 lines
1.3 KiB
Rust
52 lines
1.3 KiB
Rust
use crate::commands::WholeStreamCommand;
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use crate::data::TaggedDictBuilder;
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use crate::prelude::*;
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use nu_errors::ShellError;
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use nu_protocol::Signature;
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use std::sync::atomic::Ordering;
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pub struct Shells;
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impl WholeStreamCommand for Shells {
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fn name(&self) -> &str {
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"shells"
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}
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fn signature(&self) -> Signature {
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Signature::build("shells")
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}
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fn usage(&self) -> &str {
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"Display the list of current shells."
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}
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fn run(
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&self,
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args: CommandArgs,
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registry: &CommandRegistry,
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) -> Result<OutputStream, ShellError> {
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shells(args, registry)
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}
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}
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fn shells(args: CommandArgs, _registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
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let mut shells_out = VecDeque::new();
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let tag = args.call_info.name_tag;
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for (index, shell) in args.shell_manager.shells.lock().unwrap().iter().enumerate() {
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let mut dict = TaggedDictBuilder::new(&tag);
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if index == (*args.shell_manager.current_shell).load(Ordering::SeqCst) {
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dict.insert_untagged(" ", "X".to_string());
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} else {
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dict.insert_untagged(" ", " ".to_string());
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}
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dict.insert_untagged("name", shell.name());
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dict.insert_untagged("path", shell.path());
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shells_out.push_back(dict.into_value());
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}
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Ok(shells_out.to_output_stream())
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}
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