common_strings/
lib.rs

1pub use common_strings_trait::CommonStrings;
2
3pub mod common_strings_trait;
4
5#[cfg(feature = "serde")]
6pub mod visitor;
7
8#[macro_export]
9macro_rules! common_strings {
10    (
11        $(#[$outer:meta])*
12        $vis:vis enum $EnumName:ident {
13            $(
14                $(#[$inner:ident $($args:tt)*])*
15                const $Name:ident = $value:literal;
16            )*
17        }
18    ) => {
19        $(#[$outer])*
20        $vis enum $EnumName {
21            $(
22                $(#[$inner $($args)*])*
23                $Name,
24            )*
25            Other(::std::string::String),
26        }
27
28        impl $crate::common_strings_trait::CommonStrings for $EnumName {
29            fn to_str(&self) -> &str {
30                match self {
31                    $(
32                        $EnumName::$Name => $value,
33                        $EnumName::Other(v) => v.as_str(),
34                    )*
35                }
36            }
37
38            fn into_string(self) -> ::std::string::String {
39                match self {
40                    $EnumName::Other(v) => v,
41                    _ => self.to_str().to_string()
42                }
43            }
44
45            fn into_cow(self) -> ::std::borrow::Cow<'static, str> {
46                match self {
47                    $(
48                        $EnumName::$Name => $value.into(),
49                    )*
50                    $EnumName::Other(v) => v.into(),
51                }
52            }
53
54            fn from_cow(v: ::std::borrow::Cow<'_, str>) -> Self {
55                match v.as_ref() {
56                    $(
57                        $value => $EnumName::$Name,
58                    )*
59                    _ => $EnumName::Other(v.into_owned().into()),
60                }
61            }
62        }
63
64        impl ::std::convert::AsRef<str> for $EnumName {
65            fn as_ref(&self) -> &str {
66                $crate::common_strings_trait::CommonStrings::to_str(self)
67            }
68        }
69
70        impl From<$EnumName> for ::std::string::String {
71            fn from(v: $EnumName) -> Self {
72                $crate::common_strings_trait::CommonStrings::into_string(v)
73            }
74        }
75
76        impl std::fmt::Display for $EnumName {
77            fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
78                f.write_str($crate::common_strings_trait::CommonStrings::to_str(self))
79            }
80        }
81
82        impl From<::std::string::String> for $EnumName {
83            fn from(v: ::std::string::String) -> Self {
84                $crate::common_strings_trait::CommonStrings::from_cow(v.into())
85            }
86        }
87
88        impl From<&str> for $EnumName {
89            fn from(v: &str) -> Self {
90                $crate::common_strings_trait::CommonStrings::from_cow(v.into())
91            }
92        }
93
94        impl From<$EnumName> for std::borrow::Cow<'_, str> {
95            fn from(v: $EnumName) -> Self {
96                $crate::common_strings_trait::CommonStrings::into_cow(v)
97            }
98        }
99
100        $crate::__impl_serde!($EnumName);
101    };
102}
103
104#[cfg(feature = "serde")]
105#[macro_export]
106macro_rules! __impl_serde {
107    ($EnumName:ident) => {
108        impl ::serde::Serialize for $EnumName {
109            fn serialize<S: ::serde::Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
110                serializer.serialize_str(self.as_ref())
111            }
112        }
113
114        impl<'de> ::serde::Deserialize<'de> for $EnumName {
115            fn deserialize<D: ::serde::Deserializer<'de>>(
116                deserializer: D,
117            ) -> Result<Self, D::Error> {
118                deserializer.deserialize_any($crate::visitor::CommonStringsVisitor::new())
119            }
120        }
121    };
122}
123
124#[cfg(not(feature = "serde"))]
125#[macro_export(local_inner_macros)]
126macro_rules! __impl_serde {
127    ($EnumName:ident) => {};
128}
common_strings/lib.rs

common_strings/
lib.rs
