net-literals 0.2.0

Literals for IP/socket addresses
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
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170

extern crate proc_macro;

use {
    std::{
        str::FromStr,
        net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4, SocketAddrV6},
    },
    syn::LitStr,
    proc_macro::TokenStream,
    quote::quote,
    proc_macro_error::{abort, proc_macro_error},
};

#[proc_macro_error]
#[proc_macro]
pub fn ip(tokens: TokenStream) -> TokenStream {
    let lit = syn::parse_macro_input!(tokens as LitStr);
    let span = lit.span();
    let s = lit.value();
    let ip = match IpAddr::from_str(&s) {
        Ok(ip) => ip,
        Err(err) => {
            abort!(span, "{}", err);
        },
    };
    let ret = match ip {
        IpAddr::V4(ipv4) => {
            let [b0, b1, b2, b3] = ipv4.octets();
            quote! {
                ::std::net::IpAddr::V4(::std::net::Ipv4Addr::new(#b0, #b1, #b2, #b3))
            }
        },
        IpAddr::V6(ipv6) => {
            let [s0, s1, s2, s3, s4, s5, s6, s7] = ipv6.segments();
            quote! {
                ::std::net::IpAddr::V6(::std::net::Ipv6Addr::new(#s0, #s1, #s2, #s3, #s4, #s5, #s6, #s7))
            }
        },
    };
    ret.into()
}

#[proc_macro_error]
#[proc_macro]
pub fn ipv4(tokens: TokenStream) -> TokenStream {
    let lit = syn::parse_macro_input!(tokens as LitStr);
    let span = lit.span();
    let s = lit.value();
    let ipv4 = match Ipv4Addr::from_str(&s) {
        Ok(ipv4) => ipv4,
        Err(err) => {
            abort!(span, "{}", err);
        },
    };
    let [b0, b1, b2, b3] = ipv4.octets();
    let ret = quote! {
        ::std::net::Ipv4Addr::new(#b0, #b1, #b2, #b3)
    };
    ret.into()
}

#[proc_macro_error]
#[proc_macro]
pub fn ipv6(tokens: TokenStream) -> TokenStream {
    let lit = syn::parse_macro_input!(tokens as LitStr);
    let span = lit.span();
    let s = lit.value();
    let ipv6 = match Ipv6Addr::from_str(&s) {
        Ok(ipv6) => ipv6,
        Err(err) => {
            abort!(span, "{}", err);
        },
    };
    let [s0, s1, s2, s3, s4, s5, s6, s7] = ipv6.segments();
    let ret = quote! {
        ::std::net::Ipv6Addr::new(#s0, #s1, #s2, #s3, #s4, #s5, #s6, #s7)
    };
    ret.into()
}

#[proc_macro_error]
#[proc_macro]
pub fn addr(tokens: TokenStream) -> TokenStream {
    let lit = syn::parse_macro_input!(tokens as LitStr);
    let span = lit.span();
    let s = lit.value();
    let addr = match SocketAddr::from_str(&s) {
        Ok(addr) => addr,
        Err(err) => {
            abort!(span, "{}", err);
        },
    };
    let ret = match addr {
        SocketAddr::V4(addrv4) => {
            let [b0, b1, b2, b3] = addrv4.ip().octets();
            let port = addrv4.port();
            quote! {
                ::std::net::SocketAddr::V4(::std::net::SocketAddrV4::new(
                    ::std::net::Ipv4Addr::new(#b0, #b1, #b2, #b3),
                    #port,
                ))
            }
        },
        SocketAddr::V6(addrv6) => {
            let [s0, s1, s2, s3, s4, s5, s6, s7] = addrv6.ip().segments();
            let port = addrv6.port();
            let flowinfo = addrv6.flowinfo();
            let scope_id = addrv6.scope_id();
            quote! {
                ::std::net::SocketAddr::V6(::std::net::SocketAddrV6::new(
                    ::std::net::Ipv6Addr::new(#s0, #s1, #s2, #s3, #s4, #s5, #s6, #s7),
                    #port,
                    #flowinfo,
                    #scope_id,
                ))
            }
        },
    };
    ret.into()
}

#[proc_macro_error]
#[proc_macro]
pub fn addrv4(tokens: TokenStream) -> TokenStream {
    let lit = syn::parse_macro_input!(tokens as LitStr);
    let span = lit.span();
    let s = lit.value();
    let addrv4 = match SocketAddrV4::from_str(&s) {
        Ok(addrv4) => addrv4,
        Err(err) => {
            abort!(span, "{}", err);
        },
    };
    let [b0, b1, b2, b3] = addrv4.ip().octets();
    let port = addrv4.port();
    let ret = quote! {
        ::std::net::SocketAddrV4::new(
            ::std::net::Ipv4Addr::new(#b0, #b1, #b2, #b3),
            #port,
        )
    };
    ret.into()
}

#[proc_macro_error]
#[proc_macro]
pub fn addrv6(tokens: TokenStream) -> TokenStream {
    let lit = syn::parse_macro_input!(tokens as LitStr);
    let span = lit.span();
    let s = lit.value();
    let addrv6 = match SocketAddrV6::from_str(&s) {
        Ok(addrv6) => addrv6,
        Err(err) => {
            abort!(span, "{}", err);
        },
    };
    let [s0, s1, s2, s3, s4, s5, s6, s7] = addrv6.ip().segments();
    let port = addrv6.port();
    let flowinfo = addrv6.flowinfo();
    let scope_id = addrv6.scope_id();
    let ret = quote! {
        ::std::net::SocketAddrV6::new(
            ::std::net::Ipv6Addr::new(#s0, #s1, #s2, #s3, #s4, #s5, #s6, #s7),
            #port,
            #flowinfo,
            #scope_id,
        )
    };
    ret.into()
}