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43 lines
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<!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 to the Rust file `mercator_parser/src/evaluators.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>evaluators.rs.html -- source</title><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="../../dark.css"><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><script src="../../storage.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="shortcut icon" href="../../favicon.ico"><style type="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><body class="rustdoc source"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../../parser/index.html'><div class='logo-container'><img src='../../rust-logo.png' alt='logo'></div></a></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../theme.js"></script><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><a id="settings-menu" href="../../settings.html"><img src="../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><pre class="line-numbers"><span id="1"> 1</span>
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</pre><div class="example-wrap"><pre class="rust ">
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<span class="kw">use</span> <span class="ident">mercator_db</span>::<span class="ident">space</span>;
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<span class="kw">use</span> <span class="ident">mercator_db</span>::<span class="ident">Properties</span>;
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<span class="kw">use</span> <span class="kw">super</span>::<span class="ident">expressions</span>::<span class="kw-2">*</span>;
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<span class="kw">use</span> <span class="kw">super</span>::<span class="ident">symbols</span>::<span class="kw-2">*</span>;
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<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'e</span><span class="op">></span> <span class="ident">Evaluator</span><span class="op"><</span><span class="lifetime">'e</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Predicate</span> {
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<span class="kw">type</span> <span class="ident">Object</span> <span class="op">=</span> (<span class="kw-2">&</span><span class="lifetime">'e</span> <span class="ident">String</span>, <span class="kw-2">&</span><span class="lifetime">'e</span> <span class="ident">space</span>::<span class="ident">Position</span>, <span class="kw-2">&</span><span class="lifetime">'e</span> <span class="ident">Properties</span>);
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<span class="kw">fn</span> <span class="ident">eval</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">object</span>: <span class="self">Self</span>::<span class="ident">Object</span>) <span class="op">-</span><span class="op">></span> <span class="ident">bool</span> {
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<span class="kw">match</span> <span class="self">self</span> {
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<span class="ident">Predicate</span>::<span class="ident">Not</span>(<span class="ident">predicate</span>) <span class="op">=</span><span class="op">></span> <span class="op">!</span><span class="ident">predicate</span>.<span class="ident">eval</span>(<span class="ident">object</span>),
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<span class="ident">Predicate</span>::<span class="ident">And</span>(<span class="ident">lh</span>, <span class="ident">rh</span>) <span class="op">=</span><span class="op">></span> <span class="ident">lh</span>.<span class="ident">eval</span>(<span class="ident">object</span>) <span class="kw-2">&</span><span class="op">&</span> <span class="ident">rh</span>.<span class="ident">eval</span>(<span class="ident">object</span>),
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<span class="ident">Predicate</span>::<span class="ident">Or</span>(<span class="ident">lh</span>, <span class="ident">rh</span>) <span class="op">=</span><span class="op">></span> <span class="ident">lh</span>.<span class="ident">eval</span>(<span class="ident">object</span>) <span class="op">|</span><span class="op">|</span> <span class="ident">rh</span>.<span class="ident">eval</span>(<span class="ident">object</span>),
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<span class="ident">Predicate</span>::<span class="ident">Less</span>(<span class="ident">selector</span>, <span class="ident">literal</span>) <span class="op">=</span><span class="op">></span> <span class="kw-2">&</span><span class="ident">selector</span>.<span class="ident">value</span>(<span class="ident">object</span>) <span class="op"><</span> <span class="ident">literal</span>,
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<span class="ident">Predicate</span>::<span class="ident">Greater</span>(<span class="ident">selector</span>, <span class="ident">literal</span>) <span class="op">=</span><span class="op">></span> <span class="kw-2">&</span><span class="ident">selector</span>.<span class="ident">value</span>(<span class="ident">object</span>) <span class="op">></span> <span class="ident">literal</span>,
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<span class="ident">Predicate</span>::<span class="ident">Equal</span>(<span class="ident">selector</span>, <span class="ident">literal</span>) <span class="op">=</span><span class="op">></span> <span class="kw-2">&</span><span class="ident">selector</span>.<span class="ident">value</span>(<span class="ident">object</span>) <span class="op">=</span><span class="op">=</span> <span class="ident">literal</span>,
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}
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}
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}
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</pre></div>
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