Enum Callable

pub enum Callable {
    Native(Function),
    Custom(Arc<dyn Fn(&mut Context<'_>, &[Value]) -> Result<Value, Error> + Send + Sync>),
}

Callable value.

Variants

Native(Function)

Custom(Arc<dyn Fn(&mut Context<'_>, &[Value]) -> Result<Value, Error> + Send + Sync>)

Implementations

impl Callable

pub fn is_native(&self) -> bool

Returns true if this is a Callable::Native, otherwise false

pub fn as_native_mut(&mut self) -> Option<&mut Function>

Optionally returns mutable references to the inner fields if this is a Callable::Native, otherwise None

pub fn as_native(&self) -> Option<&Function>

Optionally returns references to the inner fields if this is a Callable::Native, otherwise None

pub fn into_native(self) -> Result<Function, Self>

Returns the inner fields if this is a Callable::Native, otherwise returns back the enum in the Err case of the result

pub fn is_custom(&self) -> bool

Returns true if this is a Callable::Custom, otherwise false

pub fn as_custom_mut( &mut self, ) -> Option<&mut Arc<dyn Fn(&mut Context<'_>, &[Value]) -> Result<Value, EvalError> + Send + Sync>>

Optionally returns mutable references to the inner fields if this is a Callable::Custom, otherwise None

pub fn as_custom( &self, ) -> Option<&Arc<dyn Fn(&mut Context<'_>, &[Value]) -> Result<Value, EvalError> + Send + Sync>>

Optionally returns references to the inner fields if this is a Callable::Custom, otherwise None

pub fn into_custom( self, ) -> Result<Arc<dyn Fn(&mut Context<'_>, &[Value]) -> Result<Value, EvalError> + Send + Sync>, Self>

Returns the inner fields if this is a Callable::Custom, otherwise returns back the enum in the Err case of the result

impl Callable

pub fn unwrap_native(self) -> Function

pub fn unwrap_custom( self, ) -> Arc<dyn Fn(&mut Context<'_>, &[Value]) -> Result<Value, EvalError> + Send + Sync>

impl Callable

pub fn address(&self) -> Option<usize>

Return the address of the callable’s implementation, if available.

Trait Implementations

impl Clone for Callable

fn clone(&self) -> Callable

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Callable

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

Formats the value using the given formatter.

impl From<Arc<dyn Fn(&mut Context<'_>, &[Value]) -> Result<Value, Error> + Send + Sync>> for Callable

fn from( original: Arc<dyn Fn(&mut Context<'_>, &[Value]) -> Result<Value, EvalError> + Send + Sync>, ) -> Callable

Converts to this type from the input type.

impl From<Callable> for Value

fn from(original: Callable) -> Value

Converts to this type from the input type.

impl From<Function> for Callable

fn from(original: Function) -> Callable

Converts to this type from the input type.

impl PartialEq for Callable

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TryFrom<Callable> for Arc<dyn Fn(&mut Context<'_>, &[Value]) -> Result<Value, Error> + Send + Sync>

type Error = &'static str

The type returned in the event of a conversion error.

fn try_from(value: Callable) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Callable> for Function

type Error = &'static str

The type returned in the event of a conversion error.

fn try_from(value: Callable) -> Result<Self, Self::Error>

Performs the conversion.