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</pre><div class="example-wrap"><pre class="rust ">
<span class="doccomment">//! Useful utilities for working with OpenStreetMap.</span>

<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fmt</span>;

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

<span class="comment">// These are common OSM keys. Keys used in just one or two places don&#39;t really need to be defined</span>
<span class="comment">// here.</span>

<span class="comment">// These&#39;re normal OSM keys.</span>
<span class="kw">pub</span> <span class="kw">const</span> <span class="ident">NAME</span>: <span class="kw-2">&amp;</span><span class="ident">str</span> <span class="op">=</span> <span class="string">&quot;name&quot;</span>;
<span class="kw">pub</span> <span class="kw">const</span> <span class="ident">HIGHWAY</span>: <span class="kw-2">&amp;</span><span class="ident">str</span> <span class="op">=</span> <span class="string">&quot;highway&quot;</span>;
<span class="kw">pub</span> <span class="kw">const</span> <span class="ident">MAXSPEED</span>: <span class="kw-2">&amp;</span><span class="ident">str</span> <span class="op">=</span> <span class="string">&quot;maxspeed&quot;</span>;
<span class="kw">pub</span> <span class="kw">const</span> <span class="ident">PARKING_RIGHT</span>: <span class="kw-2">&amp;</span><span class="ident">str</span> <span class="op">=</span> <span class="string">&quot;parking:lane:right&quot;</span>;
<span class="kw">pub</span> <span class="kw">const</span> <span class="ident">PARKING_LEFT</span>: <span class="kw-2">&amp;</span><span class="ident">str</span> <span class="op">=</span> <span class="string">&quot;parking:lane:left&quot;</span>;
<span class="kw">pub</span> <span class="kw">const</span> <span class="ident">PARKING_BOTH</span>: <span class="kw-2">&amp;</span><span class="ident">str</span> <span class="op">=</span> <span class="string">&quot;parking:lane:both&quot;</span>;
<span class="kw">pub</span> <span class="kw">const</span> <span class="ident">SIDEWALK</span>: <span class="kw-2">&amp;</span><span class="ident">str</span> <span class="op">=</span> <span class="string">&quot;sidewalk&quot;</span>;

<span class="comment">// The rest of these are all inserted by A/B Street to plumb data between different stages of map</span>
<span class="comment">// construction. They could be plumbed another way, but this is the most convenient.</span>

<span class="comment">// Just a copy of OSM IDs, so that things displaying/searching tags will also pick these up.</span>
<span class="kw">pub</span> <span class="kw">const</span> <span class="ident">OSM_WAY_ID</span>: <span class="kw-2">&amp;</span><span class="ident">str</span> <span class="op">=</span> <span class="string">&quot;abst:osm_way_id&quot;</span>;
<span class="kw">pub</span> <span class="kw">const</span> <span class="ident">OSM_REL_ID</span>: <span class="kw-2">&amp;</span><span class="ident">str</span> <span class="op">=</span> <span class="string">&quot;abst:osm_rel_id&quot;</span>;
<span class="comment">// OSM ways are split into multiple roads. The first and last road are marked, which is important</span>
<span class="comment">// for interpreting turn restrictions.</span>
<span class="kw">pub</span> <span class="kw">const</span> <span class="ident">ENDPT_FWD</span>: <span class="kw-2">&amp;</span><span class="ident">str</span> <span class="op">=</span> <span class="string">&quot;abst:endpt_fwd&quot;</span>;
<span class="kw">pub</span> <span class="kw">const</span> <span class="ident">ENDPT_BACK</span>: <span class="kw-2">&amp;</span><span class="ident">str</span> <span class="op">=</span> <span class="string">&quot;abst:endpt_back&quot;</span>;

<span class="comment">// Any roads might have these.</span>
<span class="kw">pub</span> <span class="kw">const</span> <span class="ident">INFERRED_PARKING</span>: <span class="kw-2">&amp;</span><span class="ident">str</span> <span class="op">=</span> <span class="string">&quot;abst:parking_inferred&quot;</span>;
<span class="kw">pub</span> <span class="kw">const</span> <span class="ident">INFERRED_SIDEWALKS</span>: <span class="kw-2">&amp;</span><span class="ident">str</span> <span class="op">=</span> <span class="string">&quot;abst:sidewalks_inferred&quot;</span>;

<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">PartialEq</span>, <span class="ident">Eq</span>, <span class="ident">PartialOrd</span>, <span class="ident">Ord</span>, <span class="ident">Clone</span>, <span class="ident">Copy</span>)]</span>
<span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">RoadRank</span> {
    <span class="ident">Local</span>,
    <span class="ident">Arterial</span>,
    <span class="ident">Highway</span>,
}

<span class="kw">impl</span> <span class="ident">RoadRank</span> {
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">from_highway</span>(<span class="ident">hwy</span>: <span class="kw-2">&amp;</span><span class="ident">str</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">RoadRank</span> {
        <span class="kw">match</span> <span class="ident">hwy</span> {
            <span class="string">&quot;motorway&quot;</span> <span class="op">|</span> <span class="string">&quot;motorway_link&quot;</span> <span class="op">=</span><span class="op">&gt;</span> <span class="ident">RoadRank</span>::<span class="ident">Highway</span>,
            <span class="string">&quot;trunk&quot;</span> <span class="op">|</span> <span class="string">&quot;trunk_link&quot;</span> <span class="op">=</span><span class="op">&gt;</span> <span class="ident">RoadRank</span>::<span class="ident">Highway</span>,
            <span class="string">&quot;primary&quot;</span> <span class="op">|</span> <span class="string">&quot;primary_link&quot;</span> <span class="op">=</span><span class="op">&gt;</span> <span class="ident">RoadRank</span>::<span class="ident">Arterial</span>,
            <span class="string">&quot;secondary&quot;</span> <span class="op">|</span> <span class="string">&quot;secondary_link&quot;</span> <span class="op">=</span><span class="op">&gt;</span> <span class="ident">RoadRank</span>::<span class="ident">Arterial</span>,
            <span class="string">&quot;tertiary&quot;</span> <span class="op">|</span> <span class="string">&quot;tertiary_link&quot;</span> <span class="op">=</span><span class="op">&gt;</span> <span class="ident">RoadRank</span>::<span class="ident">Arterial</span>,
            <span class="kw">_</span> <span class="op">=</span><span class="op">&gt;</span> <span class="ident">RoadRank</span>::<span class="ident">Local</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 class="ident">Serialize</span>, <span class="ident">Deserialize</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">NodeID</span>(<span class="kw">pub</span> <span class="ident">i64</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 class="ident">Serialize</span>, <span class="ident">Deserialize</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">WayID</span>(<span class="kw">pub</span> <span class="ident">i64</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 class="ident">Serialize</span>, <span class="ident">Deserialize</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">RelationID</span>(<span class="kw">pub</span> <span class="ident">i64</span>);

<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Display</span> <span class="kw">for</span> <span class="ident">NodeID</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;</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
        <span class="macro">write</span><span class="macro">!</span>(<span class="ident">f</span>, <span class="string">&quot;https://www.openstreetmap.org/node/{}&quot;</span>, <span class="self">self</span>.<span class="number">0</span>)
    }
}
<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Display</span> <span class="kw">for</span> <span class="ident">WayID</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;</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
        <span class="macro">write</span><span class="macro">!</span>(<span class="ident">f</span>, <span class="string">&quot;https://www.openstreetmap.org/way/{}&quot;</span>, <span class="self">self</span>.<span class="number">0</span>)
    }
}
<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Display</span> <span class="kw">for</span> <span class="ident">RelationID</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;</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
        <span class="macro">write</span><span class="macro">!</span>(<span class="ident">f</span>, <span class="string">&quot;https://www.openstreetmap.org/relation/{}&quot;</span>, <span class="self">self</span>.<span class="number">0</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 class="ident">Serialize</span>, <span class="ident">Deserialize</span>)]</span>
<span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">OsmID</span> {
    <span class="ident">Node</span>(<span class="ident">NodeID</span>),
    <span class="ident">Way</span>(<span class="ident">WayID</span>),
    <span class="ident">Relation</span>(<span class="ident">RelationID</span>),
}
<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Display</span> <span class="kw">for</span> <span class="ident">OsmID</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;</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
        <span class="kw">match</span> <span class="self">self</span> {
            <span class="ident">OsmID</span>::<span class="ident">Node</span>(<span class="ident">n</span>) <span class="op">=</span><span class="op">&gt;</span> <span class="macro">write</span><span class="macro">!</span>(<span class="ident">f</span>, <span class="string">&quot;{}&quot;</span>, <span class="ident">n</span>),
            <span class="ident">OsmID</span>::<span class="ident">Way</span>(<span class="ident">w</span>) <span class="op">=</span><span class="op">&gt;</span> <span class="macro">write</span><span class="macro">!</span>(<span class="ident">f</span>, <span class="string">&quot;{}&quot;</span>, <span class="ident">w</span>),
            <span class="ident">OsmID</span>::<span class="ident">Relation</span>(<span class="ident">r</span>) <span class="op">=</span><span class="op">&gt;</span> <span class="macro">write</span><span class="macro">!</span>(<span class="ident">f</span>, <span class="string">&quot;{}&quot;</span>, <span class="ident">r</span>),
        }
    }
}
<span class="kw">impl</span> <span class="ident">OsmID</span> {
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">inner</span>(<span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="ident">i64</span> {
        <span class="kw">match</span> <span class="self">self</span> {
            <span class="ident">OsmID</span>::<span class="ident">Node</span>(<span class="ident">n</span>) <span class="op">=</span><span class="op">&gt;</span> <span class="ident">n</span>.<span class="number">0</span>,
            <span class="ident">OsmID</span>::<span class="ident">Way</span>(<span class="ident">w</span>) <span class="op">=</span><span class="op">&gt;</span> <span class="ident">w</span>.<span class="number">0</span>,
            <span class="ident">OsmID</span>::<span class="ident">Relation</span>(<span class="ident">r</span>) <span class="op">=</span><span class="op">&gt;</span> <span class="ident">r</span>.<span class="number">0</span>,
        }
    }
}
</pre></div>
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