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or.rs
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/
or.rs
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use nu_engine::CallExt;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{
Category, Example, PipelineData, ShellError, Signature, Span, SyntaxShape, Type, Value,
};
#[derive(Clone)]
pub struct SubCommand;
impl Command for SubCommand {
fn name(&self) -> &str {
"bits or"
}
fn signature(&self) -> Signature {
Signature::build("bits or")
.input_output_types(vec![(Type::Int, Type::Int)])
.vectorizes_over_list(true)
.required(
"target",
SyntaxShape::Int,
"target integer to perform bit or",
)
.category(Category::Bits)
}
fn usage(&self) -> &str {
"Performs bitwise or for integers"
}
fn search_terms(&self) -> Vec<&str> {
vec!["logic or"]
}
fn run(
&self,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let head = call.head;
let target: i64 = call.req(engine_state, stack, 0)?;
input.map(
move |value| operate(value, target, head),
engine_state.ctrlc.clone(),
)
}
fn examples(&self) -> Vec<Example> {
vec![
Example {
description: "Apply bits or to two numbers",
example: "2 | bits or 6",
result: Some(Value::int(6, Span::test_data())),
},
Example {
description: "Apply logical or to a list of numbers",
example: "[8 3 2] | bits or 2",
result: Some(Value::List {
vals: vec![Value::test_int(10), Value::test_int(3), Value::test_int(2)],
span: Span::test_data(),
}),
},
]
}
}
fn operate(value: Value, target: i64, head: Span) -> Value {
match value {
Value::Int { val, span } => Value::Int {
val: val | target,
span,
},
other => Value::Error {
error: ShellError::UnsupportedInput(
format!(
"Only integer values are supported, input type: {:?}",
other.get_type()
),
other.span().unwrap_or(head),
),
},
}
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn test_examples() {
use crate::test_examples;
test_examples(SubCommand {})
}
}