qubit-function 0.8.3

Common functional programming type aliases for Rust, providing Java-style functional interfaces
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104

/*******************************************************************************
 *
 *    Copyright (c) 2025 - 2026.
 *    Haixing Hu, Qubit Co. Ltd.
 *
 *    All rights reserved.
 *
 ******************************************************************************/
//! # Function Debug Display Macro
//!
//! Generates Debug and Display trait implementations for Function structs
//!
//! Generates standard Debug and Display trait implementations for Function
//! structs that have a `name: Option<String>` field.
//!
//! # Parameters
//!
//! * `$struct_name` - The struct name
//! * `$generic` - Generic parameter list (two or three type parameters)
//!
//! # Examples
//!
//! ```ignore
//! // For two type parameters
//! impl_function_debug_display!(BoxFunction<T, R>);
//!
//! // For three type parameters
//! impl_function_debug_display!(BoxBiFunction<T, U, R>);
//! ```
//!
//! # Author
//!
//! Haixing Hu

/// Generates Debug and Display trait implementations for Function structs
///
/// This macro should be used at the top level (outside of any impl block) as
/// it generates complete `impl Debug` and `impl Display` blocks for the
/// specified struct. Generates standard Debug and Display trait implementations
/// for Function structs that have a `name: Option<String>` field.
///
/// # Parameters
///
/// * `$struct_name` - The struct name
/// * `$generic` - Generic parameter list (two or three type parameters)
///
/// # Examples
///
/// ```ignore
/// // For two type parameters
/// impl_function_debug_display!(BoxFunction<T, R>);
///
/// // For three type parameters
/// impl_function_debug_display!(BoxBiFunction<T, U, R>);
/// ```
///
/// # Author
///
/// Haixing Hu
macro_rules! impl_function_debug_display {
    // Two generic parameters - Function types
    ($struct_name:ident < $t:ident, $r:ident >) => {
        impl<$t, $r> std::fmt::Debug for $struct_name<$t, $r> {
            fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
                f.debug_struct(stringify!($struct_name))
                    .field("name", &self.name)
                    .field("function", &"<function>")
                    .finish()
            }
        }

        impl<$t, $r> std::fmt::Display for $struct_name<$t, $r> {
            fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
                match &self.name {
                    Some(name) => write!(f, "{}({})", stringify!($struct_name), name),
                    None => write!(f, "{}", stringify!($struct_name)),
                }
            }
        }
    };

    // Three generic parameters - BiFunction types
    ($struct_name:ident < $t:ident, $u:ident, $r:ident >) => {
        impl<$t, $u, $r> std::fmt::Debug for $struct_name<$t, $u, $r> {
            fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
                f.debug_struct(stringify!($struct_name))
                    .field("name", &self.name)
                    .field("function", &"<function>")
                    .finish()
            }
        }

        impl<$t, $u, $r> std::fmt::Display for $struct_name<$t, $u, $r> {
            fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
                match &self.name {
                    Some(name) => write!(f, "{}({})", stringify!($struct_name), name),
                    None => write!(f, "{}", stringify!($struct_name)),
                }
            }
        }
    };
}

pub(crate) use impl_function_debug_display;