b2c5af457e
This improves incremental build time when working on what was previously the root package. For example, previously all plugins would be rebuilt with a change to `src/commands/classified/external.rs`, but now only `nu-cli` will have to be rebuilt (and anything that depends on it).
48 lines
1.1 KiB
Rust
48 lines
1.1 KiB
Rust
use crate::commands::WholeStreamCommand;
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use crate::context::CommandRegistry;
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use crate::prelude::*;
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use nu_errors::ShellError;
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use nu_protocol::{Signature, SyntaxShape, Value};
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#[derive(Deserialize)]
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struct PrependArgs {
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row: Value,
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}
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pub struct Prepend;
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impl WholeStreamCommand for Prepend {
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fn name(&self) -> &str {
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"prepend"
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}
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fn signature(&self) -> Signature {
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Signature::build("prepend").required(
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"row value",
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SyntaxShape::Any,
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"the value of the row to prepend to the table",
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)
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}
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fn usage(&self) -> &str {
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"Prepend the given row to the front of the table"
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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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args.process(registry, prepend)?.run()
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}
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}
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fn prepend(
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PrependArgs { row }: PrependArgs,
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RunnableContext { input, .. }: RunnableContext,
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) -> Result<OutputStream, ShellError> {
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let prepend = futures::stream::iter(vec![row]);
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Ok(OutputStream::from_input(prepend.chain(input.values)))
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}
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