Struct RcTransformer 

pub struct RcTransformer<T, R> { /* private fields */ }

RcTransformer - single-threaded transformer wrapper

A single-threaded, clonable transformer wrapper optimized for scenarios that require sharing without thread-safety overhead.

Features

• Based on: Rc<dyn Fn(T) -> R>
• Ownership: Shared ownership via reference counting (non-atomic)
• Reusability: Can be called multiple times (each call consumes its input)
• Thread Safety: Not thread-safe (no Send + Sync)
• Clonable: Cheap cloning via Rc::clone

Author

Haixing Hu

Implementations

impl<T, R> RcTransformer<T, R>

where T: 'static, R: 'static,

pub fn new<F>(f: F) -> Self

where F: Fn(T) -> R + 'static,

Creates a new transformer.

Wraps the provided closure in the appropriate smart pointer type for this transformer implementation.

pub fn new_with_name<F>(name: &str, f: F) -> Self

where F: Fn(T) -> R + 'static,

Creates a new named transformer.

Wraps the provided closure and assigns it a name, which is useful for debugging and logging purposes.

pub fn new_with_optional_name<F>(f: F, name: Option<String>) -> Self

where F: Fn(T) -> R + 'static,

Creates a new named transformer with an optional name.

Wraps the provided closure and assigns it an optional name.

pub fn name(&self) -> Option<&str>

Gets the name of this transformer.

Returns

Returns Some(&str) if a name was set, None otherwise.

pub fn set_name(&mut self, name: &str)

Sets the name of this transformer.

Parameters

• name - The name to set for this transformer

pub fn identity() -> RcTransformer<T, T>

Creates an identity transformer.

Creates a transformer that returns the input value unchanged. Useful for default values or placeholder implementations.

Returns

Returns a new transformer instance that returns the input unchanged.

pub fn when<P>(&self, predicate: P) -> RcConditionalTransformer<T, R>

where P: Predicate<T> + 'static,

pub fn and_then<S, F>(&self, after: F) -> RcTransformer<T, S>

where S: 'static, F: Transformer<R, S> + 'static,

impl<T, R> RcTransformer<T, R>

where T: 'static, R: Clone + 'static,

pub fn constant(value: R) -> RcTransformer<T, R>

Creates a constant transformer

Examples

/// rust /// use prism3_function::{RcTransformer, Transformer}; /// /// let constant = RcTransformer::constant("hello"); /// assert_eq!(constant.apply(123), "hello"); ///

Trait Implementations

impl<T, R> Clone for RcTransformer<T, R>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T, R> Debug for RcTransformer<T, R>

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

Formats the value using the given formatter.

impl<T, R> Display for RcTransformer<T, R>

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

Formats the value using the given formatter.

impl<T, R> Transformer<T, R> for RcTransformer<T, R>

fn apply(&self, input: T) -> R

Applies the transformation to the input value to produce an output value

fn into_box(self) -> BoxTransformer<T, R>

where T: 'static, R: 'static,

Converts to BoxTransformer

fn into_rc(self) -> RcTransformer<T, R>

where T: 'static, R: 'static,

Converts to RcTransformer

fn into_fn(self) -> impl Fn(T) -> R

Converts transformer to a closure

fn to_box(&self) -> BoxTransformer<T, R>

where T: 'static, R: 'static,

Converts to BoxTransformer without consuming self

fn to_rc(&self) -> RcTransformer<T, R>

where T: 'static, R: 'static,

Converts to RcTransformer without consuming self

fn to_fn(&self) -> impl Fn(T) -> R

Converts transformer to a closure without consuming self

fn into_once(self) -> BoxTransformerOnce<T, R>

where T: 'static, R: 'static,

Converts to BoxTransformerOnce.

fn to_once(&self) -> BoxTransformerOnce<T, R>

where T: 'static, R: 'static,

Converts to BoxTransformerOnce without consuming self

fn into_arc(self) -> ArcTransformer<T, R>

where Self: Sized + Send + Sync + 'static, T: Send + Sync + 'static, R: Send + Sync + 'static,

Converts to ArcTransformer

fn to_arc(&self) -> ArcTransformer<T, R>

where Self: Clone + Send + Sync + 'static, T: Send + Sync + 'static, R: Send + Sync + 'static,

Converts to ArcTransformer without consuming self