Struct conch_runtime::env::FnEnv

pub struct FnEnv<N: Hash + Eq, F> { /* fields omitted */ }

An environment module for setting and getting shell functions.

Uses Rc internally. For a possible Send and Sync implementation, see env::atomic::FnEnv.

Methods

impl<N: Hash + Eq, F> FnEnv<N, F>

pub fn new() -> Self

Constructs a new FnEnv with no defined functions.

Trait Implementations

impl<N, F> FunctionEnvironment for FnEnv<N, F> where
    N: Clone + Hash + Eq,
    F: Clone, 

type FnName = N

The name to be associated with a function.

type Fn = F

The type of the function.

fn function(&self, name: &Self::FnName) -> Option<&Self::Fn>

Get a particularly named function if it was registered.

fn set_function(&mut self, name: Self::FnName, func: Self::Fn)

Register a shell function with a given name.

fn has_function(&self, name: &Self::FnName) -> bool

Check if a particularly named function was registered.

impl<N, F> UnsetFunctionEnvironment for FnEnv<N, F> where
    N: Clone + Hash + Eq,
    F: Clone, 

fn unset_function(&mut self, name: &Self::FnName)

Removes the definition of a function if it was registered.

impl<N: Hash + Eq, F> SubEnvironment for FnEnv<N, F>

fn sub_env(&self) -> Self

Create a new sub-environment, which starts out idential to its parent, but any changes on the new environment will not be reflected on the parent.

impl<N: Eq + Hash + Eq, F: Eq> Eq for FnEnv<N, F>

impl<N: PartialEq + Hash + Eq, F: PartialEq> PartialEq<FnEnv<N, F>> for FnEnv<N, F>

fn eq(&self, other: &FnEnv<N, F>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &FnEnv<N, F>) -> bool

This method tests for !=.

impl<N: Hash + Eq, F> Clone for FnEnv<N, F>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<N: Hash + Eq, F> Default for FnEnv<N, F>

fn default() -> Self

Returns the "default value" for a type.

impl<N, F> Debug for FnEnv<N, F> where
    N: Hash + Eq + Debug + Ord,
    F: Debug, 

fn fmt(&self, fmt: &mut Formatter) -> Result

Formats the value using the given formatter.