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embed-nu/src/utils.rs

33 lines
768 B
Rust

use nu_protocol::{
ast::Block,
engine::{EngineState, StateWorkingSet},
Span,
};
use crate::error::{CrateError, CrateResult};
pub trait NewEmpty {
fn empty() -> Self;
}
impl NewEmpty for Span {
#[inline]
fn empty() -> Self {
Span::new(0, 0)
}
}
pub fn parse_nu_script(engine_state: &mut EngineState, contents: String) -> CrateResult<Block> {
let mut working_set = StateWorkingSet::new(&engine_state);
let block = nu_parser::parse(&mut working_set, None, &contents.into_bytes(), false);
if working_set.parse_errors.is_empty() {
let delta = working_set.render();
engine_state.merge_delta(delta)?;
Ok(block)
} else {
Err(CrateError::NuParseErrors(working_set.parse_errors))
}
}