qubit_function/functions/function/
rc_function.rs

1/*******************************************************************************
2 *
3 *    Copyright (c) 2025 - 2026.
4 *    Haixing Hu, Qubit Co. Ltd.
5 *
6 *    All rights reserved.
7 *
8 ******************************************************************************/
9//! Defines the `RcFunction` public type.
10
11#![allow(unused_imports)]
12
13use super::*;
14
15// ============================================================================
16// RcFunction - Rc<dyn Fn(&T) -> R>
17// ============================================================================
18
19/// RcFunction - single-threaded function wrapper
20///
21/// A single-threaded, clonable function wrapper optimized for scenarios
22/// that require sharing without thread-safety overhead.
23///
24/// # Features
25///
26/// - **Based on**: `Rc<dyn Fn(&T) -> R>`
27/// - **Ownership**: Shared ownership via reference counting (non-atomic)
28/// - **Reusability**: Can be called multiple times (each call consumes its
29///   input)
30/// - **Thread Safety**: Not thread-safe (no `Send + Sync`)
31/// - **Clonable**: Cheap cloning via `Rc::clone`
32///
33/// # Author
34///
35/// Haixing Hu
36pub struct RcFunction<T, R> {
37    pub(super) function: Rc<dyn Fn(&T) -> R>,
38    pub(super) name: Option<String>,
39}
40
41impl<T, R> RcFunction<T, R> {
42    // Generates: new(), new_with_name(), new_with_optional_name(), name(), set_name()
43    impl_function_common_methods!(
44        RcFunction<T, R>,
45        (Fn(&T) -> R + 'static),
46        |f| Rc::new(f)
47    );
48
49    // Generates: when(), and_then(), compose()
50    impl_shared_function_methods!(
51        RcFunction<T, R>,
52        RcConditionalFunction,
53        into_rc,
54        Function,
55        'static
56    );
57}
58
59// Generates: constant() method for RcFunction<T, R>
60impl_function_constant_method!(RcFunction<T, R>, 'static);
61
62// Generates: identity() method for RcFunction<T, T>
63impl_function_identity_method!(RcFunction<T, T>);
64
65// Generates: Clone implementation for RcFunction<T, R>
66impl_function_clone!(RcFunction<T, R>);
67
68// Generates: Debug and Display implementations for RcFunction<T, R>
69impl_function_debug_display!(RcFunction<T, R>);
70
71// Implement Function trait for RcFunction<T, R>
72impl<T, R> Function<T, R> for RcFunction<T, R> {
73    fn apply(&self, t: &T) -> R {
74        (self.function)(t)
75    }
76
77    // Use macro to implement conversion methods
78    impl_rc_conversions!(
79        RcFunction<T, R>,
80        BoxFunction,
81        BoxFunctionOnce,
82        Fn(t: &T) -> R
83    );
84}
qubit_function/functions/function/rc_function.rs

qubit_function/functions/function/
rc_function.rs
