qubit_function/transformers/transformer/
rc_transformer.rs

1/*******************************************************************************
2 *
3 *    Copyright (c) 2025 - 2026 Haixing Hu.
4 *
5 *    SPDX-License-Identifier: Apache-2.0
6 *
7 *    Licensed under the Apache License, Version 2.0.
8 *
9 ******************************************************************************/
10// qubit-style: allow explicit-imports
11//! Defines the `RcTransformer` public type.
12
13#![allow(unused_imports)]
14
15use super::*;
16
17// ============================================================================
18// RcTransformer - Rc<dyn Fn(T) -> R>
19// ============================================================================
20
21/// RcTransformer - single-threaded transformer wrapper
22///
23/// A single-threaded, clonable transformer wrapper optimized for scenarios
24/// that require sharing without thread-safety overhead.
25///
26/// # Features
27///
28/// - **Based on**: `Rc<dyn Fn(T) -> R>`
29/// - **Ownership**: Shared ownership via reference counting (non-atomic)
30/// - **Reusability**: Can be called multiple times (each call consumes its
31///   input)
32/// - **Thread Safety**: Not thread-safe (no `Send + Sync`)
33/// - **Clonable**: Cheap cloning via `Rc::clone`
34///
35pub struct RcTransformer<T, R> {
36    pub(super) function: Rc<dyn Fn(T) -> R>,
37    pub(super) name: Option<String>,
38}
39
40// Implement RcTransformer
41impl<T, R> RcTransformer<T, R> {
42    impl_transformer_common_methods!(
43        RcTransformer<T, R>,
44        (Fn(T) -> R + 'static),
45        |f| Rc::new(f)
46    );
47
48    impl_shared_transformer_methods!(
49        RcTransformer<T, R>,
50        RcConditionalTransformer,
51        into_rc,
52        Transformer,
53        'static
54    );
55}
56
57impl_transformer_constant_method!(RcTransformer<T, R>);
58
59// Implement Debug and Display for RcTransformer
60impl_transformer_debug_display!(RcTransformer<T, R>);
61
62// Implement Clone for RcTransformer
63impl_transformer_clone!(RcTransformer<T, R>);
64
65// Implement Transformer for RcTransformer
66impl<T, R> Transformer<T, R> for RcTransformer<T, R> {
67    fn apply(&self, input: T) -> R {
68        (self.function)(input)
69    }
70
71    // Generate all conversion methods using the unified macro
72    impl_rc_conversions!(
73        RcTransformer<T, R>,
74        BoxTransformer,
75        BoxTransformerOnce,
76        Fn(input: T) -> R
77    );
78}
qubit_function/transformers/transformer/rc_transformer.rs

qubit_function/transformers/transformer/
rc_transformer.rs
