Struct ShellEnv 

pub struct ShellEnv {
    pub scopes: Vec<IndexMap<SmolStr, ShellVar>>,
}

The shell environment: a stack of variable scopes.

Fields

scopes: Vec<IndexMap<SmolStr, ShellVar>>

Implementations

impl ShellEnv

pub fn new() -> Self

pub fn get(&self, name: &str) -> Option<&ShellVar>

Look up a variable by name, searching from innermost scope outward.

pub fn get_mut(&mut self, name: &str) -> Option<&mut ShellVar>

Get a mutable reference to a variable by name.

pub fn set(&mut self, name: SmolStr, var: ShellVar)

Set a variable in the current (innermost) scope.

pub fn push_scope(&mut self)

Push a new scope (e.g. for a function call).

pub fn pop_scope(&mut self) -> Option<IndexMap<SmolStr, ShellVar>>

Pop the innermost scope. Returns None if only the global scope remains.

pub fn remove(&mut self, name: &str) -> Option<ShellVar>

Remove a variable from the current (innermost) scope.

pub fn exported_vars(&self) -> IndexMap<SmolStr, SmolStr>

Iterate over all exported variables across all scopes (innermost wins for shadowed names).

Trait Implementations

impl Clone for ShellEnv

fn clone(&self) -> ShellEnv

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ShellEnv

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ShellEnv

fn default() -> Self

Returns the “default value” for a type.