forked from extern/nushell
45 lines
1.1 KiB
Rust
45 lines
1.1 KiB
Rust
|
use nu_engine::{eval_block, eval_expression};
|
||
|
use nu_protocol::ast::Call;
|
||
|
use nu_protocol::engine::{Command, EvaluationContext};
|
||
|
use nu_protocol::{Signature, SyntaxShape, Value};
|
||
|
|
||
|
pub struct Do;
|
||
|
|
||
|
impl Command for Do {
|
||
|
fn name(&self) -> &str {
|
||
|
"do"
|
||
|
}
|
||
|
|
||
|
fn usage(&self) -> &str {
|
||
|
"Run a block"
|
||
|
}
|
||
|
|
||
|
fn signature(&self) -> nu_protocol::Signature {
|
||
|
Signature::build("do").required(
|
||
|
"block",
|
||
|
SyntaxShape::Block(Some(vec![])),
|
||
|
"the block to run",
|
||
|
)
|
||
|
}
|
||
|
|
||
|
fn run(
|
||
|
&self,
|
||
|
context: &EvaluationContext,
|
||
|
call: &Call,
|
||
|
input: Value,
|
||
|
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
|
||
|
let block = &call.positional[0];
|
||
|
|
||
|
let out = eval_expression(context, block)?;
|
||
|
|
||
|
match out {
|
||
|
Value::Block { val: block_id, .. } => {
|
||
|
let engine_state = context.engine_state.borrow();
|
||
|
let block = engine_state.get_block(block_id);
|
||
|
eval_block(context, block, input)
|
||
|
}
|
||
|
_ => Ok(Value::nothing()),
|
||
|
}
|
||
|
}
|
||
|
}
|