nu_cmd_lang/core_commands/
continue_.rs

1use nu_engine::command_prelude::*;
2use nu_protocol::engine::CommandType;
3
4#[derive(Clone)]
5pub struct Continue;
6
7impl Command for Continue {
8    fn name(&self) -> &str {
9        "continue"
10    }
11
12    fn description(&self) -> &str {
13        "Continue a loop from the next iteration."
14    }
15
16    fn signature(&self) -> nu_protocol::Signature {
17        Signature::build("continue")
18            .input_output_types(vec![(Type::Nothing, Type::Nothing)])
19            .category(Category::Core)
20    }
21
22    fn extra_description(&self) -> &str {
23        r#"This command is a parser keyword. For details, check:
24  https://www.nushell.sh/book/thinking_in_nu.html
25
26  continue can only be used in while, loop, and for loops. It can not be used with each or other filter commands"#
27    }
28
29    fn command_type(&self) -> CommandType {
30        CommandType::Keyword
31    }
32    fn run(
33        &self,
34        _engine_state: &EngineState,
35        _stack: &mut Stack,
36        _call: &Call,
37        _input: PipelineData,
38    ) -> Result<PipelineData, ShellError> {
39        // This is compiled specially by the IR compiler. The code here is never used when
40        // running in IR mode.
41        eprintln!(
42            "Tried to execute 'run' for the 'continue' command: this code path should never be reached in IR mode"
43        );
44        unreachable!()
45    }
46
47    fn examples(&self) -> Vec<Example<'_>> {
48        vec![Example {
49            description: "Continue a loop from the next iteration",
50            example: r#"for i in 1..10 { if $i == 5 { continue }; print $i }"#,
51            result: None,
52        }]
53    }
54}
nu_cmd_lang/core_commands/continue_.rs

nu_cmd_lang/core_commands/
continue_.rs
