mirror of
https://github.com/nushell/nushell
synced 2025-01-25 03:15:25 +00:00
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`).
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 AppendArgs {
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row: Value,
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}
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pub struct Append;
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impl WholeStreamCommand for Append {
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fn name(&self) -> &str {
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"append"
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}
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fn signature(&self) -> Signature {
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Signature::build("append").required(
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"row value",
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SyntaxShape::Any,
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"the value of the row to append to the table",
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)
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}
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fn usage(&self) -> &str {
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"Append the given row to 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, append)?.run()
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}
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}
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fn append(
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AppendArgs { row }: AppendArgs,
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RunnableContext { input, .. }: RunnableContext,
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) -> Result<OutputStream, ShellError> {
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let mut after: VecDeque<Value> = VecDeque::new();
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after.push_back(row);
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Ok(OutputStream::from_input(input.values.chain(after)))
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}
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