forked from extern/nushell
58 lines
1.4 KiB
Rust
58 lines
1.4 KiB
Rust
use nu_engine::CallExt;
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use nu_protocol::ast::Call;
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use nu_protocol::engine::{Command, EngineState, Stack};
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use nu_protocol::{
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Category, Example, IntoPipelineData, PipelineData, ShellError, Signature, SyntaxShape, Value,
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};
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#[derive(Clone)]
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pub struct Print;
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impl Command for Print {
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fn name(&self) -> &str {
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"print"
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}
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fn signature(&self) -> Signature {
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Signature::build("print")
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.rest("rest", SyntaxShape::Any, "the values to print")
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.category(Category::Strings)
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}
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fn usage(&self) -> &str {
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"Prints the values given"
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}
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fn run(
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&self,
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engine_state: &EngineState,
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stack: &mut Stack,
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call: &Call,
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_input: PipelineData,
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) -> Result<PipelineData, ShellError> {
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let args: Vec<Value> = call.rest(engine_state, stack, 0)?;
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let head = call.head;
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for arg in args {
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crate::util::print_pipeline_data(arg.into_pipeline_data(), engine_state, stack)?;
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}
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Ok(PipelineData::new(head))
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}
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fn examples(&self) -> Vec<Example> {
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vec![
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Example {
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description: "Print 'hello world'",
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example: r#"print "hello world""#,
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result: None,
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},
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Example {
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description: "Print the sum of 2 and 3",
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example: r#"print (2 + 3)"#,
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result: None,
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},
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]
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}
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}
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