<!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 `map_model/src/objects/lane.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>lane.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" type="text/css" href="../../../normalize.css"><link rel="stylesheet" type="text/css" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../ayu.css" disabled><link rel="stylesheet" type="text/css" href="../../../dark.css" disabled><link rel="stylesheet" type="text/css" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script src="../../../crates.js"></script><script defer src="../../../main.js"></script><script defer src="../../../source-script.js"></script><script defer src="../../../source-files.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="mobile-topbar"><button class="sidebar-menu-toggle">&#9776;</button><a class="sidebar-logo" href="../../../map_model/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div>
        </a><h2 class="location"></h2>
    </nav>
    <nav class="sidebar"><a class="sidebar-logo" href="../../../map_model/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div>
        </a></nav><main><div class="width-limiter"><div class="sub-container"><a class="sub-logo-container" href="../../../map_model/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><nav class="sub"><div class="theme-picker hidden"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="22" height="22" alt="Pick another theme!" src="../../../brush.svg"></button><div id="theme-choices" role="menu"></div></div><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"><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></form></nav></div><section id="main-content" class="content"><div class="example-wrap"><pre class="line-numbers"><span id="1">  1</span>
<span id="2">  2</span>
<span id="3">  3</span>
<span id="4">  4</span>
<span id="5">  5</span>
<span id="6">  6</span>
<span id="7">  7</span>
<span id="8">  8</span>
<span id="9">  9</span>
<span id="10"> 10</span>
<span id="11"> 11</span>
<span id="12"> 12</span>
<span id="13"> 13</span>
<span id="14"> 14</span>
<span id="15"> 15</span>
<span id="16"> 16</span>
<span id="17"> 17</span>
<span id="18"> 18</span>
<span id="19"> 19</span>
<span id="20"> 20</span>
<span id="21"> 21</span>
<span id="22"> 22</span>
<span id="23"> 23</span>
<span id="24"> 24</span>
<span id="25"> 25</span>
<span id="26"> 26</span>
<span id="27"> 27</span>
<span id="28"> 28</span>
<span id="29"> 29</span>
<span id="30"> 30</span>
<span id="31"> 31</span>
<span id="32"> 32</span>
<span id="33"> 33</span>
<span id="34"> 34</span>
<span id="35"> 35</span>
<span id="36"> 36</span>
<span id="37"> 37</span>
<span id="38"> 38</span>
<span id="39"> 39</span>
<span id="40"> 40</span>
<span id="41"> 41</span>
<span id="42"> 42</span>
<span id="43"> 43</span>
<span id="44"> 44</span>
<span id="45"> 45</span>
<span id="46"> 46</span>
<span id="47"> 47</span>
<span id="48"> 48</span>
<span id="49"> 49</span>
<span id="50"> 50</span>
<span id="51"> 51</span>
<span id="52"> 52</span>
<span id="53"> 53</span>
<span id="54"> 54</span>
<span id="55"> 55</span>
<span id="56"> 56</span>
<span id="57"> 57</span>
<span id="58"> 58</span>
<span id="59"> 59</span>
<span id="60"> 60</span>
<span id="61"> 61</span>
<span id="62"> 62</span>
<span id="63"> 63</span>
<span id="64"> 64</span>
<span id="65"> 65</span>
<span id="66"> 66</span>
<span id="67"> 67</span>
<span id="68"> 68</span>
<span id="69"> 69</span>
<span id="70"> 70</span>
<span id="71"> 71</span>
<span id="72"> 72</span>
<span id="73"> 73</span>
<span id="74"> 74</span>
<span id="75"> 75</span>
<span id="76"> 76</span>
<span id="77"> 77</span>
<span id="78"> 78</span>
<span id="79"> 79</span>
<span id="80"> 80</span>
<span id="81"> 81</span>
<span id="82"> 82</span>
<span id="83"> 83</span>
<span id="84"> 84</span>
<span id="85"> 85</span>
<span id="86"> 86</span>
<span id="87"> 87</span>
<span id="88"> 88</span>
<span id="89"> 89</span>
<span id="90"> 90</span>
<span id="91"> 91</span>
<span id="92"> 92</span>
<span id="93"> 93</span>
<span id="94"> 94</span>
<span id="95"> 95</span>
<span id="96"> 96</span>
<span id="97"> 97</span>
<span id="98"> 98</span>
<span id="99"> 99</span>
<span id="100">100</span>
<span id="101">101</span>
<span id="102">102</span>
<span id="103">103</span>
<span id="104">104</span>
<span id="105">105</span>
<span id="106">106</span>
<span id="107">107</span>
<span id="108">108</span>
<span id="109">109</span>
<span id="110">110</span>
<span id="111">111</span>
<span id="112">112</span>
<span id="113">113</span>
<span id="114">114</span>
<span id="115">115</span>
<span id="116">116</span>
<span id="117">117</span>
<span id="118">118</span>
<span id="119">119</span>
<span id="120">120</span>
<span id="121">121</span>
<span id="122">122</span>
<span id="123">123</span>
<span id="124">124</span>
<span id="125">125</span>
<span id="126">126</span>
<span id="127">127</span>
<span id="128">128</span>
<span id="129">129</span>
<span id="130">130</span>
<span id="131">131</span>
<span id="132">132</span>
<span id="133">133</span>
<span id="134">134</span>
<span id="135">135</span>
<span id="136">136</span>
<span id="137">137</span>
<span id="138">138</span>
<span id="139">139</span>
<span id="140">140</span>
<span id="141">141</span>
<span id="142">142</span>
<span id="143">143</span>
<span id="144">144</span>
<span id="145">145</span>
<span id="146">146</span>
<span id="147">147</span>
<span id="148">148</span>
<span id="149">149</span>
<span id="150">150</span>
<span id="151">151</span>
<span id="152">152</span>
<span id="153">153</span>
<span id="154">154</span>
<span id="155">155</span>
<span id="156">156</span>
<span id="157">157</span>
<span id="158">158</span>
<span id="159">159</span>
<span id="160">160</span>
<span id="161">161</span>
<span id="162">162</span>
<span id="163">163</span>
<span id="164">164</span>
<span id="165">165</span>
<span id="166">166</span>
<span id="167">167</span>
<span id="168">168</span>
<span id="169">169</span>
<span id="170">170</span>
<span id="171">171</span>
<span id="172">172</span>
<span id="173">173</span>
<span id="174">174</span>
<span id="175">175</span>
<span id="176">176</span>
<span id="177">177</span>
<span id="178">178</span>
<span id="179">179</span>
<span id="180">180</span>
<span id="181">181</span>
<span id="182">182</span>
<span id="183">183</span>
<span id="184">184</span>
<span id="185">185</span>
<span id="186">186</span>
<span id="187">187</span>
<span id="188">188</span>
<span id="189">189</span>
<span id="190">190</span>
<span id="191">191</span>
<span id="192">192</span>
<span id="193">193</span>
<span id="194">194</span>
<span id="195">195</span>
<span id="196">196</span>
<span id="197">197</span>
<span id="198">198</span>
<span id="199">199</span>
<span id="200">200</span>
<span id="201">201</span>
<span id="202">202</span>
<span id="203">203</span>
<span id="204">204</span>
<span id="205">205</span>
<span id="206">206</span>
<span id="207">207</span>
<span id="208">208</span>
<span id="209">209</span>
<span id="210">210</span>
<span id="211">211</span>
<span id="212">212</span>
<span id="213">213</span>
<span id="214">214</span>
<span id="215">215</span>
<span id="216">216</span>
<span id="217">217</span>
<span id="218">218</span>
<span id="219">219</span>
<span id="220">220</span>
<span id="221">221</span>
<span id="222">222</span>
<span id="223">223</span>
<span id="224">224</span>
<span id="225">225</span>
<span id="226">226</span>
<span id="227">227</span>
<span id="228">228</span>
<span id="229">229</span>
<span id="230">230</span>
<span id="231">231</span>
<span id="232">232</span>
<span id="233">233</span>
<span id="234">234</span>
<span id="235">235</span>
<span id="236">236</span>
<span id="237">237</span>
<span id="238">238</span>
<span id="239">239</span>
<span id="240">240</span>
<span id="241">241</span>
<span id="242">242</span>
<span id="243">243</span>
<span id="244">244</span>
<span id="245">245</span>
<span id="246">246</span>
<span id="247">247</span>
<span id="248">248</span>
<span id="249">249</span>
<span id="250">250</span>
<span id="251">251</span>
<span id="252">252</span>
<span id="253">253</span>
<span id="254">254</span>
<span id="255">255</span>
<span id="256">256</span>
<span id="257">257</span>
<span id="258">258</span>
<span id="259">259</span>
<span id="260">260</span>
<span id="261">261</span>
<span id="262">262</span>
<span id="263">263</span>
<span id="264">264</span>
<span id="265">265</span>
<span id="266">266</span>
<span id="267">267</span>
<span id="268">268</span>
<span id="269">269</span>
<span id="270">270</span>
<span id="271">271</span>
<span id="272">272</span>
<span id="273">273</span>
<span id="274">274</span>
<span id="275">275</span>
<span id="276">276</span>
<span id="277">277</span>
<span id="278">278</span>
<span id="279">279</span>
<span id="280">280</span>
<span id="281">281</span>
<span id="282">282</span>
<span id="283">283</span>
<span id="284">284</span>
<span id="285">285</span>
<span id="286">286</span>
<span id="287">287</span>
<span id="288">288</span>
<span id="289">289</span>
<span id="290">290</span>
<span id="291">291</span>
<span id="292">292</span>
<span id="293">293</span>
<span id="294">294</span>
<span id="295">295</span>
<span id="296">296</span>
<span id="297">297</span>
<span id="298">298</span>
<span id="299">299</span>
<span id="300">300</span>
<span id="301">301</span>
<span id="302">302</span>
<span id="303">303</span>
<span id="304">304</span>
<span id="305">305</span>
<span id="306">306</span>
<span id="307">307</span>
<span id="308">308</span>
<span id="309">309</span>
<span id="310">310</span>
<span id="311">311</span>
<span id="312">312</span>
<span id="313">313</span>
<span id="314">314</span>
<span id="315">315</span>
<span id="316">316</span>
<span id="317">317</span>
<span id="318">318</span>
<span id="319">319</span>
<span id="320">320</span>
<span id="321">321</span>
<span id="322">322</span>
<span id="323">323</span>
<span id="324">324</span>
<span id="325">325</span>
<span id="326">326</span>
<span id="327">327</span>
<span id="328">328</span>
<span id="329">329</span>
<span id="330">330</span>
<span id="331">331</span>
<span id="332">332</span>
<span id="333">333</span>
<span id="334">334</span>
<span id="335">335</span>
<span id="336">336</span>
<span id="337">337</span>
<span id="338">338</span>
<span id="339">339</span>
<span id="340">340</span>
<span id="341">341</span>
<span id="342">342</span>
<span id="343">343</span>
<span id="344">344</span>
<span id="345">345</span>
<span id="346">346</span>
<span id="347">347</span>
<span id="348">348</span>
<span id="349">349</span>
<span id="350">350</span>
<span id="351">351</span>
<span id="352">352</span>
<span id="353">353</span>
<span id="354">354</span>
<span id="355">355</span>
<span id="356">356</span>
<span id="357">357</span>
<span id="358">358</span>
<span id="359">359</span>
<span id="360">360</span>
<span id="361">361</span>
<span id="362">362</span>
<span id="363">363</span>
<span id="364">364</span>
<span id="365">365</span>
<span id="366">366</span>
<span id="367">367</span>
<span id="368">368</span>
<span id="369">369</span>
<span id="370">370</span>
<span id="371">371</span>
</pre><pre class="rust"><code><span class="kw">use</span> <span class="ident">std::collections::BTreeSet</span>;
<span class="kw">use</span> <span class="ident">std::fmt</span>;

<span class="kw">use</span> <span class="ident">serde</span>::{<span class="ident">Deserialize</span>, <span class="ident">Deserializer</span>, <span class="ident">Serialize</span>, <span class="ident">Serializer</span>};

<span class="kw">use</span> <span class="ident">geom</span>::{<span class="ident">Distance</span>, <span class="ident">Line</span>, <span class="ident">PolyLine</span>, <span class="ident">Polygon</span>, <span class="ident">Pt2D</span>};
<span class="kw">use</span> <span class="ident">raw_map::LaneType</span>;

<span class="kw">use</span> <span class="kw">crate</span>::{
    <span class="ident">osm</span>, <span class="ident">DirectedRoadID</span>, <span class="ident">Direction</span>, <span class="ident">DrivingSide</span>, <span class="ident">IntersectionID</span>, <span class="ident">Map</span>, <span class="ident">MapConfig</span>, <span class="ident">Road</span>, <span class="ident">RoadID</span>,
    <span class="ident">RoadSideID</span>, <span class="ident">SideOfRoad</span>, <span class="ident">TurnType</span>,
};

<span class="doccomment">/// From some manually audited cases in Seattle, the length of parallel street parking spots is a</span>
<span class="doccomment">/// bit different than the length in parking lots, so set a different value here.</span>
<span class="kw">pub</span> <span class="kw">const</span> <span class="ident">PARKING_LOT_SPOT_LENGTH</span>: <span class="ident">Distance</span> <span class="op">=</span> <span class="ident">Distance::const_meters</span>(<span class="number">6.4</span>);

<span class="doccomment">/// A lane is identified by its parent road and its position, ordered from the left.</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Copy</span>, <span class="ident">Debug</span>, <span class="ident">Eq</span>, <span class="ident">Hash</span>, <span class="ident">PartialEq</span>, <span class="ident">PartialOrd</span>, <span class="ident">Ord</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">LaneID</span> {
    <span class="kw">pub</span> <span class="ident">road</span>: <span class="ident">RoadID</span>,
    <span class="kw">pub</span> <span class="ident">offset</span>: <span class="ident">usize</span>,
}

<span class="kw">impl</span> <span class="ident">fmt::Display</span> <span class="kw">for</span> <span class="ident">LaneID</span> {
    <span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&amp;mut</span> <span class="ident">fmt::Formatter</span>) -&gt; <span class="ident">fmt::Result</span> {
        <span class="macro">write!</span>(<span class="ident">f</span>, <span class="string">&quot;Lane #{}&quot;</span>, <span class="self">self</span>.<span class="ident">encode_u32</span>())
    }
}

<span class="kw">impl</span> <span class="ident">LaneID</span> {
    <span class="comment">// TODO Do we have an endianness problem, or does serde take care of us?</span>
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">encode_u32</span>(<span class="self">self</span>) -&gt; <span class="ident">u32</span> {
        <span class="comment">// The first 27 bits encode the RoadID, the last 5 the offset.</span>
        <span class="comment">//</span>
        <span class="comment">// (In some Houston area dystopia, we might want 2^5 = 32 lanes on one road. That leaves 27</span>
        <span class="comment">// bits for roads -- 134 million roads should be plenty.)</span>
        <span class="kw">let</span> <span class="ident">road</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">road</span>.<span class="number">0</span> <span class="op">&lt;</span><span class="op">&lt;</span> <span class="number">5</span>;
        (<span class="ident">road</span> <span class="op">|</span> <span class="self">self</span>.<span class="ident">offset</span>) <span class="kw">as</span> <span class="ident">u32</span>
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">decode_u32</span>(<span class="ident">x</span>: <span class="ident">u32</span>) -&gt; <span class="ident">LaneID</span> {
        <span class="kw">let</span> <span class="ident">road</span> <span class="op">=</span> <span class="ident">RoadID</span>((<span class="ident">x</span> <span class="op">&gt;</span><span class="op">&gt;</span> <span class="number">5</span>) <span class="kw">as</span> <span class="ident">usize</span>);
        <span class="comment">// My bit twiddling is weak. Easier way to get a binary mask starting with 11111?</span>
        <span class="kw">let</span> <span class="ident">offset</span> <span class="op">=</span> (<span class="ident">x</span> <span class="op">&amp;</span> (<span class="number">1</span> <span class="op">+</span> <span class="number">2</span> <span class="op">+</span> <span class="number">4</span> <span class="op">+</span> <span class="number">8</span> <span class="op">+</span> <span class="number">16</span>)) <span class="kw">as</span> <span class="ident">usize</span>;
        <span class="ident">LaneID</span> { <span class="ident">road</span>, <span class="ident">offset</span> }
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">dummy</span>() -&gt; <span class="ident">LaneID</span> {
        <span class="ident">LaneID</span> {
            <span class="ident">road</span>: <span class="ident">RoadID</span>(<span class="number">0</span>),
            <span class="ident">offset</span>: <span class="number">0</span>,
        }
    }
}

<span class="kw">impl</span> <span class="ident">Serialize</span> <span class="kw">for</span> <span class="ident">LaneID</span> {
    <span class="kw">fn</span> <span class="ident">serialize</span><span class="op">&lt;</span><span class="ident">S</span><span class="op">&gt;</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">s</span>: <span class="ident">S</span>) -&gt; <span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">S::Ok</span>, <span class="ident">S::Error</span><span class="op">&gt;</span>
    <span class="kw">where</span>
        <span class="ident">S</span>: <span class="ident">Serializer</span>,
    {
        <span class="self">self</span>.<span class="ident">encode_u32</span>().<span class="ident">serialize</span>(<span class="ident">s</span>)
    }
}

<span class="kw">impl</span><span class="op">&lt;</span><span class="lifetime">&#39;de</span><span class="op">&gt;</span> <span class="ident">Deserialize</span><span class="op">&lt;</span><span class="lifetime">&#39;de</span><span class="op">&gt;</span> <span class="kw">for</span> <span class="ident">LaneID</span> {
    <span class="kw">fn</span> <span class="ident">deserialize</span><span class="op">&lt;</span><span class="ident">D</span><span class="op">&gt;</span>(<span class="ident">d</span>: <span class="ident">D</span>) -&gt; <span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">LaneID</span>, <span class="ident">D::Error</span><span class="op">&gt;</span>
    <span class="kw">where</span>
        <span class="ident">D</span>: <span class="ident">Deserializer</span><span class="op">&lt;</span><span class="lifetime">&#39;de</span><span class="op">&gt;</span>,
    {
        <span class="kw">let</span> <span class="ident">x</span> <span class="op">=</span> <span class="op">&lt;</span><span class="ident">u32</span><span class="op">&gt;</span><span class="ident">::deserialize</span>(<span class="ident">d</span>)<span class="question-mark">?</span>;
        <span class="prelude-val">Ok</span>(<span class="ident">LaneID::decode_u32</span>(<span class="ident">x</span>))
    }
}

<span class="doccomment">/// A road segment is broken down into individual lanes, which have a LaneType.</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Serialize</span>, <span class="ident">Deserialize</span>, <span class="ident">Clone</span>, <span class="ident">Debug</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Lane</span> {
    <span class="kw">pub</span> <span class="ident">id</span>: <span class="ident">LaneID</span>,
    <span class="kw">pub</span> <span class="ident">lane_type</span>: <span class="ident">LaneType</span>,
    <span class="kw">pub</span> <span class="ident">lane_center_pts</span>: <span class="ident">PolyLine</span>,
    <span class="kw">pub</span> <span class="ident">width</span>: <span class="ident">Distance</span>,
    <span class="kw">pub</span> <span class="ident">dir</span>: <span class="ident">Direction</span>,

    <span class="kw">pub</span> <span class="ident">src_i</span>: <span class="ident">IntersectionID</span>,
    <span class="kw">pub</span> <span class="ident">dst_i</span>: <span class="ident">IntersectionID</span>,

    <span class="doccomment">/// {Cars, bikes} trying to start or end here might not be able to reach most lanes in the</span>
    <span class="doccomment">/// graph, because this is near a border.</span>
    <span class="kw">pub</span> <span class="ident">driving_blackhole</span>: <span class="ident">bool</span>,
    <span class="kw">pub</span> <span class="ident">biking_blackhole</span>: <span class="ident">bool</span>,
}

<span class="kw">impl</span> <span class="ident">Lane</span> {
    <span class="comment">// TODO most of these are wrappers; stop doing this?</span>
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">first_pt</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">Pt2D</span> {
        <span class="self">self</span>.<span class="ident">lane_center_pts</span>.<span class="ident">first_pt</span>()
    }
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">last_pt</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">Pt2D</span> {
        <span class="self">self</span>.<span class="ident">lane_center_pts</span>.<span class="ident">last_pt</span>()
    }
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">first_line</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">Line</span> {
        <span class="self">self</span>.<span class="ident">lane_center_pts</span>.<span class="ident">first_line</span>()
    }
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">last_line</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">Line</span> {
        <span class="self">self</span>.<span class="ident">lane_center_pts</span>.<span class="ident">last_line</span>()
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">endpoint</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">i</span>: <span class="ident">IntersectionID</span>) -&gt; <span class="ident">Pt2D</span> {
        <span class="kw">if</span> <span class="ident">i</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">src_i</span> {
            <span class="self">self</span>.<span class="ident">first_pt</span>()
        } <span class="kw">else</span> <span class="kw">if</span> <span class="ident">i</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">dst_i</span> {
            <span class="self">self</span>.<span class="ident">last_pt</span>()
        } <span class="kw">else</span> {
            <span class="macro">panic!</span>(<span class="string">&quot;{} isn&#39;t an endpoint of {}&quot;</span>, <span class="ident">i</span>, <span class="self">self</span>.<span class="ident">id</span>);
        }
    }

    <span class="doccomment">/// pt2 will be endpoint</span>
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">end_line</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">i</span>: <span class="ident">IntersectionID</span>) -&gt; <span class="ident">Line</span> {
        <span class="kw">if</span> <span class="ident">i</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">src_i</span> {
            <span class="self">self</span>.<span class="ident">first_line</span>().<span class="ident">reversed</span>()
        } <span class="kw">else</span> <span class="kw">if</span> <span class="ident">i</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">dst_i</span> {
            <span class="self">self</span>.<span class="ident">last_line</span>()
        } <span class="kw">else</span> {
            <span class="macro">panic!</span>(<span class="string">&quot;{} isn&#39;t an endpoint of {}&quot;</span>, <span class="ident">i</span>, <span class="self">self</span>.<span class="ident">id</span>);
        }
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">dist_along_of_point</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">pt</span>: <span class="ident">Pt2D</span>) -&gt; <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">Distance</span><span class="op">&gt;</span> {
        <span class="self">self</span>.<span class="ident">lane_center_pts</span>
            .<span class="ident">dist_along_of_point</span>(<span class="ident">pt</span>)
            .<span class="ident">map</span>(<span class="op">|</span>(<span class="ident">dist</span>, <span class="kw">_</span>)<span class="op">|</span> <span class="ident">dist</span>)
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">length</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">Distance</span> {
        <span class="self">self</span>.<span class="ident">lane_center_pts</span>.<span class="ident">length</span>()
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">intersections</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">Vec</span><span class="op">&lt;</span><span class="ident">IntersectionID</span><span class="op">&gt;</span> {
        <span class="comment">// TODO I think we&#39;re assuming there are no loop lanes</span>
        <span class="macro">vec!</span>[<span class="self">self</span>.<span class="ident">src_i</span>, <span class="self">self</span>.<span class="ident">dst_i</span>]
    }

    <span class="comment">// TODO different types for each lane type might be reasonable</span>

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">number_parking_spots</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">cfg</span>: <span class="kw-2">&amp;</span><span class="ident">MapConfig</span>) -&gt; <span class="ident">usize</span> {
        <span class="macro">assert_eq!</span>(<span class="self">self</span>.<span class="ident">lane_type</span>, <span class="ident">LaneType::Parking</span>);
        <span class="comment">// No spots next to intersections</span>
        <span class="kw">let</span> <span class="ident">spots</span> <span class="op">=</span> (<span class="self">self</span>.<span class="ident">length</span>() <span class="op">/</span> <span class="ident">cfg</span>.<span class="ident">street_parking_spot_length</span>).<span class="ident">floor</span>() <span class="op">-</span> <span class="number">2.0</span>;
        <span class="kw">if</span> <span class="ident">spots</span> <span class="op">&gt;</span><span class="op">=</span> <span class="number">1.0</span> {
            <span class="ident">spots</span> <span class="kw">as</span> <span class="ident">usize</span>
        } <span class="kw">else</span> {
            <span class="number">0</span>
        }
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_driving</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">bool</span> {
        <span class="self">self</span>.<span class="ident">lane_type</span> <span class="op">==</span> <span class="ident">LaneType::Driving</span>
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_biking</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">bool</span> {
        <span class="self">self</span>.<span class="ident">lane_type</span> <span class="op">==</span> <span class="ident">LaneType::Biking</span>
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_bus</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">bool</span> {
        <span class="self">self</span>.<span class="ident">lane_type</span> <span class="op">==</span> <span class="ident">LaneType::Bus</span>
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_walkable</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">bool</span> {
        <span class="self">self</span>.<span class="ident">lane_type</span>.<span class="ident">is_walkable</span>()
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_sidewalk</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">bool</span> {
        <span class="self">self</span>.<span class="ident">lane_type</span> <span class="op">==</span> <span class="ident">LaneType::Sidewalk</span>
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_shoulder</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">bool</span> {
        <span class="self">self</span>.<span class="ident">lane_type</span> <span class="op">==</span> <span class="ident">LaneType::Shoulder</span>
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_parking</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">bool</span> {
        <span class="self">self</span>.<span class="ident">lane_type</span> <span class="op">==</span> <span class="ident">LaneType::Parking</span>
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_light_rail</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">bool</span> {
        <span class="self">self</span>.<span class="ident">lane_type</span> <span class="op">==</span> <span class="ident">LaneType::LightRail</span>
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_directed_parent</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">DirectedRoadID</span> {
        <span class="ident">DirectedRoadID</span> {
            <span class="ident">road</span>: <span class="self">self</span>.<span class="ident">id</span>.<span class="ident">road</span>,
            <span class="ident">dir</span>: <span class="self">self</span>.<span class="ident">dir</span>,
        }
    }

    <span class="doccomment">/// This does the reasonable thing for the leftmost and rightmost lane on a road -- except for</span>
    <span class="doccomment">/// roads with exactly one lane. For lanes in the middle of a road, it uses the direction of</span>
    <span class="doccomment">/// the lane -- so bidirectional/contraflow cycletracks will produce weird results.</span>
    <span class="comment">// TODO This is such a weird API; make blockfinding not depend on this</span>
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_nearest_side_of_road</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">map</span>: <span class="kw-2">&amp;</span><span class="ident">Map</span>) -&gt; <span class="ident">RoadSideID</span> {
        <span class="kw">if</span> <span class="self">self</span>.<span class="ident">id</span>.<span class="ident">offset</span> <span class="op">==</span> <span class="number">0</span> {
            <span class="kw">return</span> <span class="ident">RoadSideID</span> {
                <span class="ident">road</span>: <span class="self">self</span>.<span class="ident">id</span>.<span class="ident">road</span>,
                <span class="ident">side</span>: <span class="ident">SideOfRoad::Left</span>,
            };
        }
        <span class="kw">let</span> <span class="ident">parent</span> <span class="op">=</span> <span class="ident">map</span>.<span class="ident">get_r</span>(<span class="self">self</span>.<span class="ident">id</span>.<span class="ident">road</span>);
        <span class="kw">if</span> <span class="ident">parent</span>.<span class="ident">lanes</span>.<span class="ident">last</span>().<span class="ident">as_ref</span>().<span class="ident">unwrap</span>().<span class="ident">id</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">id</span> {
            <span class="kw">return</span> <span class="ident">RoadSideID</span> {
                <span class="ident">road</span>: <span class="self">self</span>.<span class="ident">id</span>.<span class="ident">road</span>,
                <span class="ident">side</span>: <span class="ident">SideOfRoad::Right</span>,
            };
        }

        <span class="kw">let</span> <span class="ident">side</span> <span class="op">=</span> <span class="kw">match</span> (<span class="self">self</span>.<span class="ident">dir</span>, <span class="ident">map</span>.<span class="ident">get_config</span>().<span class="ident">driving_side</span>) {
            (<span class="ident">Direction::Fwd</span>, <span class="ident">DrivingSide::Right</span>) =&gt; <span class="ident">SideOfRoad::Right</span>,
            (<span class="ident">Direction::Back</span>, <span class="ident">DrivingSide::Right</span>) =&gt; <span class="ident">SideOfRoad::Left</span>,
            (<span class="ident">Direction::Fwd</span>, <span class="ident">DrivingSide::Left</span>) =&gt; <span class="ident">SideOfRoad::Left</span>,
            (<span class="ident">Direction::Back</span>, <span class="ident">DrivingSide::Left</span>) =&gt; <span class="ident">SideOfRoad::Right</span>,
        };
        <span class="ident">RoadSideID</span> {
            <span class="ident">road</span>: <span class="self">self</span>.<span class="ident">id</span>.<span class="ident">road</span>,
            <span class="ident">side</span>,
        }
    }

    <span class="doccomment">/// Returns the set of allowed turn types, based on individual turn lane restrictions. `None`</span>
    <span class="doccomment">/// means all turn types are allowed.</span>
    <span class="doccomment">///</span>
    <span class="doccomment">/// This will return `None` for bus lanes, unless `force_bus` is true. OSM turn restrictions on</span>
    <span class="doccomment">/// bus lanes usually apply to regular vehicles, not the buses. When generating the turns for</span>
    <span class="doccomment">/// buses, we probably don&#39;t want to use the restrictions.</span>
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_lane_level_turn_restrictions</span>(
        <span class="kw-2">&amp;</span><span class="self">self</span>,
        <span class="ident">road</span>: <span class="kw-2">&amp;</span><span class="ident">Road</span>,
        <span class="ident">force_bus</span>: <span class="ident">bool</span>,
    ) -&gt; <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">BTreeSet</span><span class="op">&lt;</span><span class="ident">TurnType</span><span class="op">&gt;</span><span class="op">&gt;</span> {
        <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">is_driving</span>() <span class="op">&amp;&amp;</span> (<span class="op">!</span><span class="ident">force_bus</span> <span class="op">|</span><span class="op">|</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">is_bus</span>()) {
            <span class="kw">return</span> <span class="prelude-val">None</span>;
        }

        <span class="kw">let</span> <span class="ident">all</span> <span class="op">=</span> <span class="kw">if</span> <span class="self">self</span>.<span class="ident">dir</span> <span class="op">==</span> <span class="ident">Direction::Fwd</span> <span class="op">&amp;&amp;</span> <span class="ident">road</span>.<span class="ident">osm_tags</span>.<span class="ident">contains_key</span>(<span class="ident">osm::ENDPT_FWD</span>) {
            <span class="ident">road</span>.<span class="ident">osm_tags</span>
                .<span class="ident">get</span>(<span class="string">&quot;turn:lanes:forward&quot;</span>)
                .<span class="ident">or_else</span>(<span class="op">|</span><span class="op">|</span> <span class="ident">road</span>.<span class="ident">osm_tags</span>.<span class="ident">get</span>(<span class="string">&quot;turn:lanes&quot;</span>))<span class="question-mark">?</span>
        } <span class="kw">else</span> <span class="kw">if</span> <span class="self">self</span>.<span class="ident">dir</span> <span class="op">==</span> <span class="ident">Direction::Back</span> <span class="op">&amp;&amp;</span> <span class="ident">road</span>.<span class="ident">osm_tags</span>.<span class="ident">contains_key</span>(<span class="ident">osm::ENDPT_BACK</span>) {
            <span class="ident">road</span>.<span class="ident">osm_tags</span>.<span class="ident">get</span>(<span class="string">&quot;turn:lanes:backward&quot;</span>)<span class="question-mark">?</span>
        } <span class="kw">else</span> {
            <span class="kw">return</span> <span class="prelude-val">None</span>;
        };
        <span class="kw">let</span> <span class="ident">parts</span>: <span class="ident">Vec</span><span class="op">&lt;</span><span class="kw-2">&amp;</span><span class="ident">str</span><span class="op">&gt;</span> <span class="op">=</span> <span class="ident">all</span>.<span class="ident">split</span>(<span class="string">&#39;|&#39;</span>).<span class="ident">collect</span>();
        <span class="comment">// Verify the number of parts matches the road&#39;s lanes</span>
        <span class="kw">let</span> <span class="ident">lanes</span>: <span class="ident">Vec</span><span class="op">&lt;</span><span class="ident">LaneID</span><span class="op">&gt;</span> <span class="op">=</span> <span class="ident">road</span>
            .<span class="ident">children</span>(<span class="self">self</span>.<span class="ident">dir</span>)
            .<span class="ident">into_iter</span>()
            .<span class="ident">filter</span>(<span class="op">|</span>(<span class="kw">_</span>, <span class="ident">lt</span>)<span class="op">|</span> <span class="kw-2">*</span><span class="ident">lt</span> <span class="op">==</span> <span class="ident">LaneType::Driving</span> <span class="op">|</span><span class="op">|</span> <span class="kw-2">*</span><span class="ident">lt</span> <span class="op">==</span> <span class="ident">LaneType::Bus</span>)
            .<span class="ident">map</span>(<span class="op">|</span>(<span class="ident">id</span>, <span class="kw">_</span>)<span class="op">|</span> <span class="ident">id</span>)
            .<span class="ident">collect</span>();
        <span class="kw">if</span> <span class="ident">parts</span>.<span class="ident">len</span>() <span class="op">!</span><span class="op">=</span> <span class="ident">lanes</span>.<span class="ident">len</span>() {
            <span class="macro">warn!</span>(<span class="string">&quot;{}&#39;s turn restrictions don&#39;t match the lanes&quot;</span>, <span class="ident">road</span>.<span class="ident">orig_id</span>);
            <span class="kw">return</span> <span class="prelude-val">None</span>;
        }
        <span class="comment">// TODO More warnings if this fails</span>
        <span class="kw">let</span> <span class="ident">part</span> <span class="op">=</span> <span class="ident">parts</span>[<span class="ident">lanes</span>.<span class="ident">iter</span>().<span class="ident">position</span>(<span class="op">|</span><span class="ident">l</span><span class="op">|</span> <span class="kw-2">*</span><span class="ident">l</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">id</span>)<span class="question-mark">?</span>];

        <span class="comment">// TODO Probably the target lane should get marked as LaneType::Bus</span>
        <span class="kw">if</span> <span class="ident">part</span> <span class="op">==</span> <span class="string">&quot;yes&quot;</span> <span class="op">|</span><span class="op">|</span> <span class="ident">part</span> <span class="op">==</span> <span class="string">&quot;psv&quot;</span> <span class="op">|</span><span class="op">|</span> <span class="ident">part</span> <span class="op">==</span> <span class="string">&quot;bus&quot;</span> {
            <span class="kw">return</span> <span class="prelude-val">None</span>;
        }

        <span class="comment">// These both mean that physically, there&#39;s no marking saying what turn is valid. In</span>
        <span class="comment">// practice, this seems to imply straight is always fine, and right/left are fine unless</span>
        <span class="comment">// covered by an explicit turn lane.</span>
        <span class="comment">//</span>
        <span class="comment">// If a multi-lane road lacks markings, just listening to this function will mean that the</span>
        <span class="comment">// rightmos lanes could turn left, which probably isn&#39;t great for people in the middle</span>
        <span class="comment">// lanes going straight. Further filtering (in remove_merging_turns) will prune this out.</span>
        <span class="kw">if</span> <span class="ident">part</span>.<span class="ident">is_empty</span>() <span class="op">|</span><span class="op">|</span> <span class="ident">part</span> <span class="op">==</span> <span class="string">&quot;none&quot;</span> {
            <span class="kw">let</span> <span class="ident">all_explicit_types</span>: <span class="ident">BTreeSet</span><span class="op">&lt;</span><span class="ident">TurnType</span><span class="op">&gt;</span> <span class="op">=</span> <span class="ident">parts</span>
                .<span class="ident">iter</span>()
                .<span class="ident">flat_map</span>(<span class="op">|</span><span class="ident">part</span><span class="op">|</span> <span class="ident">part</span>.<span class="ident">split</span>(<span class="string">&#39;;&#39;</span>).<span class="ident">flat_map</span>(<span class="ident">parse_turn_type_from_osm</span>))
                .<span class="ident">collect</span>();
            <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">implied</span> <span class="op">=</span> <span class="ident">BTreeSet::new</span>();
            <span class="ident">implied</span>.<span class="ident">insert</span>(<span class="ident">TurnType::Straight</span>);
            <span class="kw">for</span> <span class="ident">tt</span> <span class="kw">in</span> [<span class="ident">TurnType::Left</span>, <span class="ident">TurnType::Right</span>] {
                <span class="kw">if</span> <span class="op">!</span><span class="ident">all_explicit_types</span>.<span class="ident">contains</span>(<span class="kw-2">&amp;</span><span class="ident">tt</span>) {
                    <span class="ident">implied</span>.<span class="ident">insert</span>(<span class="ident">tt</span>);
                }
            }
            <span class="kw">return</span> <span class="prelude-val">Some</span>(<span class="ident">implied</span>);
        }

        <span class="prelude-val">Some</span>(<span class="ident">part</span>.<span class="ident">split</span>(<span class="string">&#39;;&#39;</span>).<span class="ident">flat_map</span>(<span class="ident">parse_turn_type_from_osm</span>).<span class="ident">collect</span>())
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">common_endpoint</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">other</span>: <span class="kw-2">&amp;</span><span class="ident">Lane</span>) -&gt; <span class="ident">CommonEndpoint</span> {
        <span class="ident">CommonEndpoint::new</span>((<span class="self">self</span>.<span class="ident">src_i</span>, <span class="self">self</span>.<span class="ident">dst_i</span>), (<span class="ident">other</span>.<span class="ident">src_i</span>, <span class="ident">other</span>.<span class="ident">dst_i</span>))
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_thick_polygon</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="ident">Polygon</span> {
        <span class="self">self</span>.<span class="ident">lane_center_pts</span>.<span class="ident">make_polygons</span>(<span class="self">self</span>.<span class="ident">width</span>)
    }
}

<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">PartialEq</span>)]</span>
<span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">CommonEndpoint</span> {
    <span class="doccomment">/// Two lanes/roads share one endpoint</span>
    <span class="ident">One</span>(<span class="ident">IntersectionID</span>),
    <span class="doccomment">/// Two lanes/roads share both endpoints, because they both belong to the same road, or there</span>
    <span class="doccomment">/// are two different roads connecting the same pair of intersections</span>
    <span class="ident">Both</span>,
    <span class="doccomment">/// Two lanes/roads don&#39;t have any common endpoints</span>
    <span class="prelude-val">None</span>,
}

<span class="kw">impl</span> <span class="ident">CommonEndpoint</span> {
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(
        <span class="ident">obj1</span>: (<span class="ident">IntersectionID</span>, <span class="ident">IntersectionID</span>),
        <span class="ident">obj2</span>: (<span class="ident">IntersectionID</span>, <span class="ident">IntersectionID</span>),
    ) -&gt; <span class="ident">CommonEndpoint</span> {
        <span class="attribute">#![<span class="ident">allow</span>(<span class="ident">clippy::suspicious_operation_groupings</span>)]</span>
        <span class="kw">let</span> <span class="ident">src</span> <span class="op">=</span> <span class="ident">obj1</span>.<span class="number">0</span> <span class="op">==</span> <span class="ident">obj2</span>.<span class="number">0</span> <span class="op">|</span><span class="op">|</span> <span class="ident">obj1</span>.<span class="number">0</span> <span class="op">==</span> <span class="ident">obj2</span>.<span class="number">1</span>;
        <span class="kw">let</span> <span class="ident">dst</span> <span class="op">=</span> <span class="ident">obj1</span>.<span class="number">1</span> <span class="op">==</span> <span class="ident">obj2</span>.<span class="number">0</span> <span class="op">|</span><span class="op">|</span> <span class="ident">obj1</span>.<span class="number">1</span> <span class="op">==</span> <span class="ident">obj2</span>.<span class="number">1</span>;
        <span class="kw">if</span> <span class="ident">src</span> <span class="op">&amp;&amp;</span> <span class="ident">dst</span> {
            <span class="kw">return</span> <span class="ident">CommonEndpoint::Both</span>;
        }
        <span class="kw">if</span> <span class="ident">src</span> {
            <span class="kw">return</span> <span class="ident">CommonEndpoint::One</span>(<span class="ident">obj1</span>.<span class="number">0</span>);
        }
        <span class="kw">if</span> <span class="ident">dst</span> {
            <span class="kw">return</span> <span class="ident">CommonEndpoint::One</span>(<span class="ident">obj1</span>.<span class="number">1</span>);
        }
        <span class="ident">CommonEndpoint::None</span>
    }
}

<span class="comment">// See https://wiki.openstreetmap.org/wiki/Key:turn</span>
<span class="kw">fn</span> <span class="ident">parse_turn_type_from_osm</span>(<span class="ident">x</span>: <span class="kw-2">&amp;</span><span class="ident">str</span>) -&gt; <span class="ident">Vec</span><span class="op">&lt;</span><span class="ident">TurnType</span><span class="op">&gt;</span> {
    <span class="kw">match</span> <span class="ident">x</span> {
        <span class="string">&quot;left&quot;</span> =&gt; <span class="macro">vec!</span>[<span class="ident">TurnType::Left</span>],
        <span class="string">&quot;right&quot;</span> =&gt; <span class="macro">vec!</span>[<span class="ident">TurnType::Right</span>],
        <span class="string">&quot;through&quot;</span> =&gt; <span class="macro">vec!</span>[<span class="ident">TurnType::Straight</span>],
        <span class="string">&quot;slight_right&quot;</span> <span class="op">|</span> <span class="string">&quot;slight right&quot;</span> <span class="op">|</span> <span class="string">&quot;merge_to_right&quot;</span> <span class="op">|</span> <span class="string">&quot;sharp_right&quot;</span> =&gt; {
            <span class="macro">vec!</span>[<span class="ident">TurnType::Straight</span>, <span class="ident">TurnType::Right</span>]
        }
        <span class="string">&quot;slight_left&quot;</span> <span class="op">|</span> <span class="string">&quot;slight left&quot;</span> <span class="op">|</span> <span class="string">&quot;merge_to_left&quot;</span> <span class="op">|</span> <span class="string">&quot;sharp_left&quot;</span> =&gt; {
            <span class="macro">vec!</span>[<span class="ident">TurnType::Straight</span>, <span class="ident">TurnType::Left</span>]
        }
        <span class="string">&quot;reverse&quot;</span> =&gt; <span class="macro">vec!</span>[<span class="ident">TurnType::UTurn</span>],
        <span class="string">&quot;none&quot;</span> <span class="op">|</span> <span class="string">&quot;&quot;</span> =&gt; <span class="macro">vec!</span>[],
        <span class="kw">_</span> =&gt; {
            <span class="macro">warn!</span>(<span class="string">&quot;Unknown turn restriction {}&quot;</span>, <span class="ident">x</span>);
            <span class="macro">vec!</span>[]
        }
    }
}

<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span>
<span class="kw">mod</span> <span class="ident">tests</span> {
    <span class="kw">use</span> <span class="kw">super</span>::<span class="kw-2">*</span>;

    <span class="attribute">#[<span class="ident">test</span>]</span>
    <span class="kw">fn</span> <span class="ident">test_lane_id_encoding</span>() {
        <span class="kw">let</span> <span class="ident">l</span> <span class="op">=</span> <span class="ident">LaneID</span> {
            <span class="ident">road</span>: <span class="ident">RoadID</span>(<span class="number">42</span>),
            <span class="ident">offset</span>: <span class="number">3</span>,
        };
        <span class="macro">assert_eq!</span>(<span class="ident">l</span>, <span class="ident">LaneID::decode_u32</span>(<span class="ident">l</span>.<span class="ident">encode_u32</span>()));
    }
}
</code></pre></div>
</section><section id="search" class="content hidden"></section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="map_model" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.60.0 (7737e0b5c 2022-04-04)" ></div>
</body></html>