problemo 0.0.12

Problemo
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
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148

/// Define an attachment type.
///
/// The first argument is the type name. The second argument is the inner type name.
///
/// It's a trivial newtype with a `new(Into<InnerT>)` constructor.
#[macro_export]
macro_rules! attachment {
    ( $type:ident, $inner_type:ty $(,)? ) => {
        #[doc = concat!(stringify!($type), ".")]
        #[derive(Clone, Debug, Default, Hash)]
        pub struct $type(pub $inner_type);

        impl $type {
            /// Constructor.
            pub fn new<InnerT>(inner: InnerT) -> Self
            where
                InnerT: ::std::convert::Into<$inner_type>,
            {
                let inner: $inner_type = inner.into();
                inner.into()
            }
        }

        impl ::std::cmp::PartialEq for $type {
            fn eq(&self, other: &Self) -> bool {
                self.0.eq(&other.0)
            }
        }

        impl ::std::cmp::Eq for $type {}

        impl ::std::convert::From<$inner_type> for $type {
            fn from(inner: $inner_type) -> Self {
                Self(inner)
            }
        }

        impl ::std::convert::Into<$inner_type> for $type {
            fn into(self) -> $inner_type {
                self.0
            }
        }
    };
}

/// Define a [String] attachment type.
///
/// The argument is the type name.
///
/// It's a trivial newtype with a `new(ToString)` constructor.
#[macro_export]
macro_rules! string_attachment {
    ( $type:ident $(,)? ) => {
        #[doc = concat!(stringify!($type), ".")]
        #[derive(Clone, Debug, Default, Hash)]
        pub struct $type(pub ::std::string::String);

        impl $type {
            /// Constructor.
            pub fn new<ToStringT>(inner: ToStringT) -> Self
            where
                ToStringT: ::std::string::ToString,
            {
                inner.to_string().into()
            }
        }

        impl ::std::fmt::Display for $type {
            fn fmt(&self, formatter: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
                ::std::fmt::Display::fmt(&self.0, formatter)
            }
        }

        impl ::std::cmp::PartialEq for $type {
            fn eq(&self, other: &Self) -> bool {
                self.0.eq(&other.0)
            }
        }

        impl ::std::cmp::Eq for $type {}

        impl ::std::convert::From<::std::string::String> for $type {
            fn from(inner: ::std::string::String) -> Self {
                Self(inner)
            }
        }

        impl ::std::convert::Into<::std::string::String> for $type {
            fn into(self) -> ::std::string::String {
                self.0
            }
        }
    };
}

/// Define a `&'static str` attachment type.
///
/// The argument is the type name.
///
/// It's a trivial newtype with a `new(Into<&'static str>)` constructor.
#[macro_export]
macro_rules! static_string_attachment {
    ( $type:ident $(,)? ) => {
        #[doc = concat!(stringify!($type), ".")]
        #[derive(Clone, Debug, Default, Hash)]
        pub struct $type(pub &'static str);

        impl $type {
            /// Constructor.
            pub fn new<IntoStringT>(inner: IntoStringT) -> Self
            where
                IntoStringT: ::std::convert::Into<&'static str>,
            {
                let inner: &'static str = inner.into();
                inner.into()
            }
        }

        impl ::std::fmt::Display for $type {
            fn fmt(&self, formatter: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
                ::std::fmt::Display::fmt(&self.0, formatter)
            }
        }

        impl ::std::cmp::PartialEq for $type {
            fn eq(&self, other: &Self) -> bool {
                self.0.eq(other.0)
            }
        }

        impl ::std::cmp::Eq for $type {}

        impl ::std::convert::From<&'static str> for $type {
            fn from(inner: &'static str) -> Self {
                Self(inner)
            }
        }

        impl ::std::convert::Into<&'static str> for $type {
            fn into(self) -> &'static str {
                self.0
            }
        }
    };
}

#[allow(unused_imports)]
pub use {attachment, static_string_attachment, string_attachment};