Struct NavigationState 

pub struct NavigationState { /* private fields */ }

Implementations

impl NavigationState

pub fn new() -> Self

pub fn reset(&mut self)

pub fn cwd_value(&self) -> Value

pub fn ensure_valid(&mut self, world: &World) -> Option<String>

pub fn set_evaluated( &mut self, value: Value, binding: Option<String>, world: &World, ) -> Result<(), String>

pub fn cd_root(&mut self)

pub fn cd_parent(&mut self, world: &World)

pub fn cd_child(&mut self, segment: &str, world: &World) -> Result<(), String>

pub fn cd_path(&mut self, path: &str, world: &World) -> Result<(), String>

pub fn pwd(&self, world: &World) -> String

pub fn listing(&self, world: &World) -> Result<Vec<String>, String>

Trait Implementations

impl Clone for NavigationState

fn clone(&self) -> NavigationState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NavigationState

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

Formats the value using the given formatter.

impl Default for NavigationState

fn default() -> Self

Returns the “default value” for a type.