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

use bitstring::*;
use std::cmp::min;
use std::fmt;
use std::net::{Ipv4Addr, Ipv6Addr};
use std::str::FromStr;

use super::{Ipv4Inet, Ipv6Inet};
use super::from_str::inet_from_str;
use super::super::cidr::*;
use super::super::errors::*;
use super::super::family::Family;
use super::super::traits::*;

macro_rules! impl_inet_for {
	($n:ident : cidr $cidr:ident : addr $addr:ty : family $family:expr) => (
		impl BitString for $n {
			fn get(&self, ndx: usize) -> bool {
				self.address.get(ndx)
			}

			fn set(&mut self, ndx: usize, bit: bool) {
				assert!(ndx < self.network_length as usize);
				self.address.set(ndx, bit);
			}

			fn flip(&mut self, ndx: usize) {
				assert!(ndx < self.network_length as usize);
				self.address.flip(ndx);
			}

			fn len(&self) -> usize {
				self.network_length as usize
			}

			fn clip(&mut self, len: usize) {
				if len > 255 { return; }
				self.address.set_false_from(len);
				self.network_length = min(self.network_length, len as u8);
			}

			fn append(&mut self, bit: bool) {
				self.address.set(self.network_length as usize, bit);
				self.network_length += 1;
			}

			fn null() -> Self {
				$n{
					address: FixedBitString::new_all_false(),
					network_length: 0,
				}
			}

			fn shared_prefix_len(&self, other: &Self) -> usize {
				let max_len = min(self.network_length, other.network_length) as usize;
				FixedBitString::shared_prefix_len(&self.address, &other.address, max_len)
			}
		}

		impl Inet for $n {
			type Address = $addr;
			type Cidr = $cidr;

			fn new(
				addr: Self::Address,
				len: u8,
			) -> Result<Self, NetworkLengthTooLongError> {
				if len > $family.len() {
					Err(NetworkLengthTooLongError::new(len as usize, $family).into())
				} else {
					Ok($n{
						address: addr,
						network_length: len,
					})
				}
			}

			fn new_host(addr: Self::Address) -> Self {
				$n{
					address: addr,
					network_length: $family.len(),
				}
			}

			fn next(&mut self) -> bool {
				self.address.inc(self.network_length as usize)
			}

			fn network(&self) -> Self::Cidr {
				$cidr::new(self.first_address(), self.network_length).unwrap()
			}

			fn address(&self) -> Self::Address {
				self.address.clone()
			}

			fn first_address(&self) -> Self::Address {
				let mut a = self.address.clone();
				a.set_false_from(self.network_length as usize);
				a
			}

			fn first(&self) -> Self {
				$n{
					address: self.first_address(),
					network_length: self.network_length,
				}
			}

			fn last_address(&self) -> Self::Address {
				let mut a = self.address.clone();
				a.set_true_from(self.network_length as usize);
				a
			}

			fn last(&self) -> Self {
				$n{
					address: self.last_address(),
					network_length: self.network_length,
				}
			}

			fn network_length(&self) -> u8 {
				self.network_length
			}

			fn family(&self) -> Family {
				$family
			}

			fn mask(&self) -> Self::Address {
				let mut a = Self::Address::new_all_true();
				a.set_false_from(self.network_length as usize);
				a
			}

			fn contains(&self, addr: &Self::Address) -> bool {
				self.address.contains(self.network_length as usize, addr)
			}
		}

		impl fmt::Debug for $n {
			fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
				write!(f, "{:?}/{}", self.address, self.network_length)
			}
		}

		impl fmt::Display for $n {
			fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
				write!(f, "{}/{}", self.address, self.network_length)
			}
		}

		impl FromStr for $n {
			type Err = NetworkParseError;
			fn from_str(s: &str) -> Result<$n, NetworkParseError> {
				inet_from_str(s)
			}
		}
	)
}

impl_inet_for!{Ipv4Inet : cidr Ipv4Cidr : addr Ipv4Addr : family Family::Ipv4}
impl_inet_for!{Ipv6Inet : cidr Ipv6Cidr : addr Ipv6Addr : family Family::Ipv6}