use fix_error::Error;

use crate::value::StrictValue;
use crate::{NixNum, VmError};

pub(super) fn vm_err(msg: impl Into<String>) -> VmError {
    VmError::Uncatchable(Error::eval_error(msg.into()))
}

pub(super) fn get_num(val: StrictValue<'_>) -> Option<NixNum> {
    if let Some(i) = val.as_inline::<i32>() {
        Some(NixNum::Int(i as i64))
    } else if let Some(gc_i) = val.as_gc::<i64>() {
        Some(NixNum::Int(*gc_i))
    } else {
        val.as_float().map(NixNum::Float)
    }
}