| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/ipnet-2.7.2/src/parser.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>parser.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../ipnet/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../ipnet/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="doccomment">//! A private parser implementation of IPv4 and IPv6 network addresses. |
| //! |
| //! The existing `std::net::parser` module cannot be extended because it |
| //! is private. It is copied and extended here with methods for parsing |
| //! IP network addresses. |
| |
| </span><span class="kw">use </span>std::error::Error; |
| <span class="kw">use </span>std::fmt; |
| <span class="kw">use </span>std::net::{Ipv4Addr, Ipv6Addr}; |
| <span class="kw">use </span>std::str::FromStr; |
| |
| <span class="kw">use </span><span class="kw">crate</span>::ipnet::{IpNet, Ipv4Net, Ipv6Net}; |
| |
| <span class="kw">pub struct </span>Parser<<span class="lifetime">'a</span>> { |
| <span class="comment">// parsing as ASCII, so can use byte array |
| </span>s: <span class="kw-2">&</span><span class="lifetime">'a </span>[u8], |
| pos: usize, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> Parser<<span class="lifetime">'a</span>> { |
| <span class="kw">fn </span>new(s: <span class="kw-2">&</span><span class="lifetime">'a </span>str) -> Parser<<span class="lifetime">'a</span>> { |
| Parser { |
| s: s.as_bytes(), |
| pos: <span class="number">0</span>, |
| } |
| } |
| |
| <span class="kw">fn </span>is_eof(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="self">self</span>.pos == <span class="self">self</span>.s.len() |
| } |
| |
| <span class="comment">// Commit only if parser returns Some |
| </span><span class="kw">fn </span>read_atomically<T, F>(<span class="kw-2">&mut </span><span class="self">self</span>, cb: F) -> <span class="prelude-ty">Option</span><T> <span class="kw">where |
| </span>F: FnOnce(<span class="kw-2">&mut </span>Parser) -> <span class="prelude-ty">Option</span><T>, |
| { |
| <span class="kw">let </span>pos = <span class="self">self</span>.pos; |
| <span class="kw">let </span>r = cb(<span class="self">self</span>); |
| <span class="kw">if </span>r.is_none() { |
| <span class="self">self</span>.pos = pos; |
| } |
| r |
| } |
| |
| <span class="comment">// Commit only if parser read till EOF |
| </span><span class="kw">fn </span>read_till_eof<T, F>(<span class="kw-2">&mut </span><span class="self">self</span>, cb: F) -> <span class="prelude-ty">Option</span><T> <span class="kw">where |
| </span>F: FnOnce(<span class="kw-2">&mut </span>Parser) -> <span class="prelude-ty">Option</span><T>, |
| { |
| <span class="self">self</span>.read_atomically(<span class="kw">move </span>|p| { |
| <span class="kw">match </span>cb(p) { |
| <span class="prelude-val">Some</span>(x) => <span class="kw">if </span>p.is_eof() {<span class="prelude-val">Some</span>(x)} <span class="kw">else </span>{<span class="prelude-val">None</span>}, |
| <span class="prelude-val">None </span>=> <span class="prelude-val">None</span>, |
| } |
| }) |
| } |
| |
| <span class="comment">// Return result of first successful parser |
| </span><span class="kw">fn </span>read_or<T>(<span class="kw-2">&mut </span><span class="self">self</span>, parsers: <span class="kw-2">&mut </span>[Box<<span class="kw">dyn </span>FnMut(<span class="kw-2">&mut </span>Parser) -> <span class="prelude-ty">Option</span><T> + <span class="lifetime">'static</span>>]) |
| -> <span class="prelude-ty">Option</span><T> { |
| <span class="kw">for </span>pf <span class="kw">in </span>parsers { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(r) = <span class="self">self</span>.read_atomically(|p: <span class="kw-2">&mut </span>Parser| pf(p)) { |
| <span class="kw">return </span><span class="prelude-val">Some</span>(r); |
| } |
| } |
| <span class="prelude-val">None |
| </span>} |
| |
| <span class="comment">// Apply 3 parsers sequentially |
| </span><span class="kw">fn </span>read_seq_3<A, B, C, PA, PB, PC>(<span class="kw-2">&mut </span><span class="self">self</span>, |
| pa: PA, |
| pb: PB, |
| pc: PC) |
| -> <span class="prelude-ty">Option</span><(A, B, C)> <span class="kw">where |
| </span>PA: FnOnce(<span class="kw-2">&mut </span>Parser) -> <span class="prelude-ty">Option</span><A>, |
| PB: FnOnce(<span class="kw-2">&mut </span>Parser) -> <span class="prelude-ty">Option</span><B>, |
| PC: FnOnce(<span class="kw-2">&mut </span>Parser) -> <span class="prelude-ty">Option</span><C>, |
| { |
| <span class="self">self</span>.read_atomically(<span class="kw">move </span>|p| { |
| <span class="kw">let </span>a = pa(p); |
| <span class="kw">let </span>b = <span class="kw">if </span>a.is_some() { pb(p) } <span class="kw">else </span>{ <span class="prelude-val">None </span>}; |
| <span class="kw">let </span>c = <span class="kw">if </span>b.is_some() { pc(p) } <span class="kw">else </span>{ <span class="prelude-val">None </span>}; |
| <span class="kw">match </span>(a, b, c) { |
| (<span class="prelude-val">Some</span>(a), <span class="prelude-val">Some</span>(b), <span class="prelude-val">Some</span>(c)) => <span class="prelude-val">Some</span>((a, b, c)), |
| <span class="kw">_ </span>=> <span class="prelude-val">None |
| </span>} |
| }) |
| } |
| |
| <span class="comment">// Read next char |
| </span><span class="kw">fn </span>read_char(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><char> { |
| <span class="kw">if </span><span class="self">self</span>.is_eof() { |
| <span class="prelude-val">None |
| </span>} <span class="kw">else </span>{ |
| <span class="kw">let </span>r = <span class="self">self</span>.s[<span class="self">self</span>.pos] <span class="kw">as </span>char; |
| <span class="self">self</span>.pos += <span class="number">1</span>; |
| <span class="prelude-val">Some</span>(r) |
| } |
| } |
| |
| <span class="comment">// Return char and advance iff next char is equal to requested |
| </span><span class="kw">fn </span>read_given_char(<span class="kw-2">&mut </span><span class="self">self</span>, c: char) -> <span class="prelude-ty">Option</span><char> { |
| <span class="self">self</span>.read_atomically(|p| { |
| <span class="kw">match </span>p.read_char() { |
| <span class="prelude-val">Some</span>(next) <span class="kw">if </span>next == c => <span class="prelude-val">Some</span>(next), |
| <span class="kw">_ </span>=> <span class="prelude-val">None</span>, |
| } |
| }) |
| } |
| |
| <span class="comment">// Read digit |
| </span><span class="kw">fn </span>read_digit(<span class="kw-2">&mut </span><span class="self">self</span>, radix: u8) -> <span class="prelude-ty">Option</span><u8> { |
| <span class="kw">fn </span>parse_digit(c: char, radix: u8) -> <span class="prelude-ty">Option</span><u8> { |
| <span class="kw">let </span>c = c <span class="kw">as </span>u8; |
| <span class="comment">// assuming radix is either 10 or 16 |
| </span><span class="kw">if </span>c >= <span class="string">b'0' </span>&& c <= <span class="string">b'9' </span>{ |
| <span class="prelude-val">Some</span>(c - <span class="string">b'0'</span>) |
| } <span class="kw">else if </span>radix > <span class="number">10 </span>&& c >= <span class="string">b'a' </span>&& c < <span class="string">b'a' </span>+ (radix - <span class="number">10</span>) { |
| <span class="prelude-val">Some</span>(c - <span class="string">b'a' </span>+ <span class="number">10</span>) |
| } <span class="kw">else if </span>radix > <span class="number">10 </span>&& c >= <span class="string">b'A' </span>&& c < <span class="string">b'A' </span>+ (radix - <span class="number">10</span>) { |
| <span class="prelude-val">Some</span>(c - <span class="string">b'A' </span>+ <span class="number">10</span>) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>} |
| } |
| |
| <span class="self">self</span>.read_atomically(|p| { |
| p.read_char().and_then(|c| parse_digit(c, radix)) |
| }) |
| } |
| |
| <span class="kw">fn </span>read_number_impl(<span class="kw-2">&mut </span><span class="self">self</span>, radix: u8, max_digits: u32, upto: u32) -> <span class="prelude-ty">Option</span><u32> { |
| <span class="kw">let </span><span class="kw-2">mut </span>r = <span class="number">0</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>digit_count = <span class="number">0</span>; |
| <span class="kw">loop </span>{ |
| <span class="kw">match </span><span class="self">self</span>.read_digit(radix) { |
| <span class="prelude-val">Some</span>(d) => { |
| r = r * (radix <span class="kw">as </span>u32) + (d <span class="kw">as </span>u32); |
| digit_count += <span class="number">1</span>; |
| <span class="kw">if </span>digit_count > max_digits || r >= upto { |
| <span class="kw">return </span><span class="prelude-val">None |
| </span>} |
| } |
| <span class="prelude-val">None </span>=> { |
| <span class="kw">if </span>digit_count == <span class="number">0 </span>{ |
| <span class="kw">return </span><span class="prelude-val">None |
| </span>} <span class="kw">else </span>{ |
| <span class="kw">return </span><span class="prelude-val">Some</span>(r) |
| } |
| } |
| }; |
| } |
| } |
| |
| <span class="comment">// Read number, failing if max_digits of number value exceeded |
| </span><span class="kw">fn </span>read_number(<span class="kw-2">&mut </span><span class="self">self</span>, radix: u8, max_digits: u32, upto: u32) -> <span class="prelude-ty">Option</span><u32> { |
| <span class="self">self</span>.read_atomically(|p| p.read_number_impl(radix, max_digits, upto)) |
| } |
| |
| <span class="kw">fn </span>read_ipv4_addr_impl(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><Ipv4Addr> { |
| <span class="kw">let </span><span class="kw-2">mut </span>bs = [<span class="number">0</span>; <span class="number">4</span>]; |
| <span class="kw">let </span><span class="kw-2">mut </span>i = <span class="number">0</span>; |
| <span class="kw">while </span>i < <span class="number">4 </span>{ |
| <span class="kw">if </span>i != <span class="number">0 </span>&& <span class="self">self</span>.read_given_char(<span class="string">'.'</span>).is_none() { |
| <span class="kw">return </span><span class="prelude-val">None</span>; |
| } |
| |
| <span class="kw">let </span>octet = <span class="self">self</span>.read_number(<span class="number">10</span>, <span class="number">3</span>, <span class="number">0x100</span>).map(|n| n <span class="kw">as </span>u8); |
| <span class="kw">match </span>octet { |
| <span class="prelude-val">Some</span>(d) => bs[i] = d, |
| <span class="prelude-val">None </span>=> <span class="kw">return </span><span class="prelude-val">None</span>, |
| }; |
| i += <span class="number">1</span>; |
| } |
| <span class="prelude-val">Some</span>(Ipv4Addr::new(bs[<span class="number">0</span>], bs[<span class="number">1</span>], bs[<span class="number">2</span>], bs[<span class="number">3</span>])) |
| } |
| |
| <span class="comment">// Read IPv4 address |
| </span><span class="kw">fn </span>read_ipv4_addr(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><Ipv4Addr> { |
| <span class="self">self</span>.read_atomically(|p| p.read_ipv4_addr_impl()) |
| } |
| |
| <span class="kw">fn </span>read_ipv6_addr_impl(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><Ipv6Addr> { |
| <span class="kw">fn </span>ipv6_addr_from_head_tail(head: <span class="kw-2">&</span>[u16], tail: <span class="kw-2">&</span>[u16]) -> Ipv6Addr { |
| <span class="macro">assert!</span>(head.len() + tail.len() <= <span class="number">8</span>); |
| <span class="kw">let </span><span class="kw-2">mut </span>gs = [<span class="number">0</span>; <span class="number">8</span>]; |
| gs[..head.len()].copy_from_slice(head); |
| gs[(<span class="number">8 </span>- tail.len()) .. <span class="number">8</span>].copy_from_slice(tail); |
| Ipv6Addr::new(gs[<span class="number">0</span>], gs[<span class="number">1</span>], gs[<span class="number">2</span>], gs[<span class="number">3</span>], gs[<span class="number">4</span>], gs[<span class="number">5</span>], gs[<span class="number">6</span>], gs[<span class="number">7</span>]) |
| } |
| |
| <span class="kw">fn </span>read_groups(p: <span class="kw-2">&mut </span>Parser, groups: <span class="kw-2">&mut </span>[u16; <span class="number">8</span>], limit: usize) |
| -> (usize, bool) { |
| <span class="kw">let </span><span class="kw-2">mut </span>i = <span class="number">0</span>; |
| <span class="kw">while </span>i < limit { |
| <span class="kw">if </span>i < limit - <span class="number">1 </span>{ |
| <span class="kw">let </span>ipv4 = p.read_atomically(|p| { |
| <span class="kw">if </span>i == <span class="number">0 </span>|| p.read_given_char(<span class="string">':'</span>).is_some() { |
| p.read_ipv4_addr() |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>} |
| }); |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(v4_addr) = ipv4 { |
| <span class="kw">let </span>octets = v4_addr.octets(); |
| groups[i + <span class="number">0</span>] = ((octets[<span class="number">0</span>] <span class="kw">as </span>u16) << <span class="number">8</span>) | (octets[<span class="number">1</span>] <span class="kw">as </span>u16); |
| groups[i + <span class="number">1</span>] = ((octets[<span class="number">2</span>] <span class="kw">as </span>u16) << <span class="number">8</span>) | (octets[<span class="number">3</span>] <span class="kw">as </span>u16); |
| <span class="kw">return </span>(i + <span class="number">2</span>, <span class="bool-val">true</span>); |
| } |
| } |
| |
| <span class="kw">let </span>group = p.read_atomically(|p| { |
| <span class="kw">if </span>i == <span class="number">0 </span>|| p.read_given_char(<span class="string">':'</span>).is_some() { |
| p.read_number(<span class="number">16</span>, <span class="number">4</span>, <span class="number">0x10000</span>).map(|n| n <span class="kw">as </span>u16) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>} |
| }); |
| <span class="kw">match </span>group { |
| <span class="prelude-val">Some</span>(g) => groups[i] = g, |
| <span class="prelude-val">None </span>=> <span class="kw">return </span>(i, <span class="bool-val">false</span>) |
| } |
| i += <span class="number">1</span>; |
| } |
| (i, <span class="bool-val">false</span>) |
| } |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>head = [<span class="number">0</span>; <span class="number">8</span>]; |
| <span class="kw">let </span>(head_size, head_ipv4) = read_groups(<span class="self">self</span>, <span class="kw-2">&mut </span>head, <span class="number">8</span>); |
| |
| <span class="kw">if </span>head_size == <span class="number">8 </span>{ |
| <span class="kw">return </span><span class="prelude-val">Some</span>(Ipv6Addr::new( |
| head[<span class="number">0</span>], head[<span class="number">1</span>], head[<span class="number">2</span>], head[<span class="number">3</span>], |
| head[<span class="number">4</span>], head[<span class="number">5</span>], head[<span class="number">6</span>], head[<span class="number">7</span>])) |
| } |
| |
| <span class="comment">// IPv4 part is not allowed before `::` |
| </span><span class="kw">if </span>head_ipv4 { |
| <span class="kw">return </span><span class="prelude-val">None |
| </span>} |
| |
| <span class="comment">// read `::` if previous code parsed less than 8 groups |
| </span><span class="kw">if </span>!<span class="self">self</span>.read_given_char(<span class="string">':'</span>).is_some() || !<span class="self">self</span>.read_given_char(<span class="string">':'</span>).is_some() { |
| <span class="kw">return </span><span class="prelude-val">None</span>; |
| } |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>tail = [<span class="number">0</span>; <span class="number">8</span>]; |
| <span class="kw">let </span>(tail_size, <span class="kw">_</span>) = read_groups(<span class="self">self</span>, <span class="kw-2">&mut </span>tail, <span class="number">8 </span>- head_size); |
| <span class="prelude-val">Some</span>(ipv6_addr_from_head_tail(<span class="kw-2">&</span>head[..head_size], <span class="kw-2">&</span>tail[..tail_size])) |
| } |
| |
| <span class="kw">fn </span>read_ipv6_addr(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><Ipv6Addr> { |
| <span class="self">self</span>.read_atomically(|p| p.read_ipv6_addr_impl()) |
| } |
| |
| <span class="comment">/* Additions for IpNet below. */ |
| |
| // Read IPv4 network |
| </span><span class="kw">fn </span>read_ipv4_net(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><Ipv4Net> { |
| <span class="kw">let </span>ip_addr = |p: <span class="kw-2">&mut </span>Parser| p.read_ipv4_addr(); |
| <span class="kw">let </span>slash = |p: <span class="kw-2">&mut </span>Parser| p.read_given_char(<span class="string">'/'</span>); |
| <span class="kw">let </span>prefix_len = |p: <span class="kw-2">&mut </span>Parser| { |
| p.read_number(<span class="number">10</span>, <span class="number">2</span>, <span class="number">33</span>).map(|n| n <span class="kw">as </span>u8) |
| }; |
| |
| <span class="self">self</span>.read_seq_3(ip_addr, slash, prefix_len).map(|t| { |
| <span class="kw">let </span>(ip, <span class="kw">_</span>, prefix_len): (Ipv4Addr, char, u8) = t; |
| Ipv4Net::new(ip, prefix_len).unwrap() |
| }) |
| } |
| |
| <span class="comment">// Read Ipv6 network |
| </span><span class="kw">fn </span>read_ipv6_net(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><Ipv6Net> { |
| <span class="kw">let </span>ip_addr = |p: <span class="kw-2">&mut </span>Parser| p.read_ipv6_addr(); |
| <span class="kw">let </span>slash = |p: <span class="kw-2">&mut </span>Parser| p.read_given_char(<span class="string">'/'</span>); |
| <span class="kw">let </span>prefix_len = |p: <span class="kw-2">&mut </span>Parser| { |
| p.read_number(<span class="number">10</span>, <span class="number">3</span>, <span class="number">129</span>).map(|n| n <span class="kw">as </span>u8) |
| }; |
| |
| <span class="self">self</span>.read_seq_3(ip_addr, slash, prefix_len).map(|t| { |
| <span class="kw">let </span>(ip, <span class="kw">_</span>, prefix_len): (Ipv6Addr, char, u8) = t; |
| Ipv6Net::new(ip, prefix_len).unwrap() |
| }) |
| } |
| |
| <span class="kw">fn </span>read_ip_net(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><IpNet> { |
| <span class="kw">let </span>ipv4_net = |p: <span class="kw-2">&mut </span>Parser| p.read_ipv4_net().map(IpNet::V4); |
| <span class="kw">let </span>ipv6_net = |p: <span class="kw-2">&mut </span>Parser| p.read_ipv6_net().map(IpNet::V6); |
| <span class="self">self</span>.read_or(<span class="kw-2">&mut </span>[Box::new(ipv4_net), Box::new(ipv6_net)]) |
| } |
| |
| <span class="comment">/* Additions for IpNet above. */ |
| </span>} |
| |
| <span class="comment">/* Additions for IpNet below. */ |
| |
| </span><span class="kw">impl </span>FromStr <span class="kw">for </span>IpNet { |
| <span class="kw">type </span><span class="prelude-val">Err </span>= AddrParseError; |
| <span class="kw">fn </span>from_str(s: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><IpNet, AddrParseError> { |
| <span class="kw">match </span>Parser::new(s).read_till_eof(|p| p.read_ip_net()) { |
| <span class="prelude-val">Some</span>(s) => <span class="prelude-val">Ok</span>(s), |
| <span class="prelude-val">None </span>=> <span class="prelude-val">Err</span>(AddrParseError(())) |
| } |
| } |
| } |
| |
| <span class="kw">impl </span>FromStr <span class="kw">for </span>Ipv4Net { |
| <span class="kw">type </span><span class="prelude-val">Err </span>= AddrParseError; |
| <span class="kw">fn </span>from_str(s: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><Ipv4Net, AddrParseError> { |
| <span class="kw">match </span>Parser::new(s).read_till_eof(|p| p.read_ipv4_net()) { |
| <span class="prelude-val">Some</span>(s) => <span class="prelude-val">Ok</span>(s), |
| <span class="prelude-val">None </span>=> <span class="prelude-val">Err</span>(AddrParseError(())) |
| } |
| } |
| } |
| |
| <span class="kw">impl </span>FromStr <span class="kw">for </span>Ipv6Net { |
| <span class="kw">type </span><span class="prelude-val">Err </span>= AddrParseError; |
| <span class="kw">fn </span>from_str(s: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><Ipv6Net, AddrParseError> { |
| <span class="kw">match </span>Parser::new(s).read_till_eof(|p| p.read_ipv6_net()) { |
| <span class="prelude-val">Some</span>(s) => <span class="prelude-val">Ok</span>(s), |
| <span class="prelude-val">None </span>=> <span class="prelude-val">Err</span>(AddrParseError(())) |
| } |
| } |
| } |
| |
| <span class="comment">/* Additions for IpNet above. */ |
| |
| </span><span class="doccomment">/// An error which can be returned when parsing an IP network address. |
| /// |
| /// This error is used as the error type for the [`FromStr`] implementation for |
| /// [`IpNet`], [`Ipv4Net`], and [`Ipv6Net`]. |
| /// |
| /// [`FromStr`]: https://doc.rust-lang.org/std/str/trait.FromStr.html |
| /// [`IpNet`]: enum.IpNet.html |
| /// [`Ipv4Net`]: struct.Ipv4Net.html |
| /// [`Ipv6Net`]: struct.Ipv6Net.html |
| </span><span class="attribute">#[derive(Debug, Clone, PartialEq, Eq)] |
| </span><span class="kw">pub struct </span>AddrParseError(()); |
| |
| <span class="kw">impl </span>fmt::Display <span class="kw">for </span>AddrParseError { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, fmt: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| fmt.write_str(<span class="string">"invalid IP address syntax"</span>) |
| } |
| } |
| |
| <span class="kw">impl </span>Error <span class="kw">for </span>AddrParseError {} |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="ipnet" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
