f70c6d5d48
This commit extracts Tag, Span, Text, as well as source-related debug facilities into a new crate called nu_source. This change is much bigger than one might have expected because the previous code relied heavily on implementing inherent methods on `Tagged<T>` and `Spanned<T>`, which is no longer possible. As a result, this change creates more concrete types instead of using `Tagged<T>`. One notable example: Tagged<Value> became Value, and Value became UntaggedValue. This change clarifies the intent of the code in many places, but it does make it a big change.
51 lines
1.3 KiB
Rust
51 lines
1.3 KiB
Rust
use crate::commands::WholeStreamCommand;
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use crate::data::TaggedDictBuilder;
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use crate::errors::ShellError;
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use crate::prelude::*;
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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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