Function conch_runtime::eval::eval_redirects_or_var_assignments_with_restorers

pub fn eval_redirects_or_var_assignments_with_restorers<R, V, W, I, E: ?Sized, RR, VR>(
    redirect_restorer: RR, 
    var_restorer: VR, 
    export_vars: Option<bool>, 
    vars: I, 
    env: &E
) -> EvalRedirectOrVarAssig2<R, V, W, I::IntoIter, E, RR, VR> where
    I: IntoIterator<Item = RedirectOrVarAssig<R, V, W>>,
    R: RedirectEval<E>,
    V: Hash + Eq,
    W: WordEval<E>,
    E: VariableEnvironment,
    E::VarName: Borrow<String>,
    E::Var: Borrow<String>,
    RR: RedirectEnvRestorer<E>,
    VR: VarEnvRestorer2<E>, 

Create a a future which will evaluate a series of redirections and variable assignments.

All redirections will be applied to the environment. On successful completion, a RedirectEnvRestorer will be returned which allows the caller to reverse the changes from applying these redirections. On error, the redirections will be automatically restored.

In addition, all evaluated variable names and values to be assigned will be evaluated and added to the environment. If export_vars is specified, any variables to be inserted or updated will have their exported status set as specified. Otherwise, variables will use their existing exported status. On successful completion, a VarRestorer will be returned which allows the caller to reverse the changes from applying those assignments. On error, the assignments will be automatically restored.