conch-runtime-pshaw 0.1.6

A library for evaluating/executing programs written in the shell programming language.
Documentation 
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use crate::env::{ReportErrorEnvironment, SubEnvironment};
use crate::{ExitStatus, Spawn, EXIT_ERROR};
use std::error::Error;
use std::future::Future;

/// Spawns anything as if running in a subshell environment.
///
/// The `env` parameter will be copied as a `SubEnvironment`, in whose context
/// the commands will be executed.
pub fn subshell<S, E>(spawn: S, env: &E) -> impl Future<Output = ExitStatus>
where
    S: Spawn<E>,
    S::Error: 'static + Send + Sync + Error,
    E: ReportErrorEnvironment + SubEnvironment,
{
    subshell_with_env(spawn, env.sub_env())
}

pub(crate) async fn subshell_with_env<S, E>(spawn: S, mut env: E) -> ExitStatus
where
    S: Spawn<E>,
    S::Error: 'static + Send + Sync + Error,
    E: ReportErrorEnvironment,
{
    match spawn.spawn(&mut env).await {
        Ok(future) => future.await,
        Err(e) => {
            env.report_error(&e).await;
            EXIT_ERROR
        }
    }
}