| <!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 `crates/syntax/src/hacks.rs`."><title>hacks.rs - source</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../static.files/rustdoc-84e720fa.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="syntax" data-themes="" data-resource-suffix="" data-rustdoc-version="1.89.0 (29483883e 2025-08-04)" data-channel="1.89.0" data-search-js="search-92309212.js" data-settings-js="settings-5514c975.js" ><script src="../../static.files/storage-4e99c027.js"></script><script defer src="../../static.files/src-script-813739b1.js"></script><script defer src="../../src-files.js"></script><script defer src="../../static.files/main-fd3af306.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-32bb7600.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-6580c154.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-044be391.svg"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="src-sidebar-title"><h2>Files</h2></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><h1><div class="sub-heading">syntax/</div>hacks.rs</h1><rustdoc-toolbar></rustdoc-toolbar></div><div class="example-wrap digits-2"><pre class="rust"><code><a href=#1 id=1 data-nosnippet>1</a><span class="doccomment">//! Things which exist to solve practical issues, but which shouldn't exist. |
| <a href=#2 id=2 data-nosnippet>2</a>//! |
| <a href=#3 id=3 data-nosnippet>3</a>//! Please avoid adding new usages of the functions in this module |
| <a href=#4 id=4 data-nosnippet>4</a> |
| <a href=#5 id=5 data-nosnippet>5</a></span><span class="kw">use </span>parser::Edition; |
| <a href=#6 id=6 data-nosnippet>6</a> |
| <a href=#7 id=7 data-nosnippet>7</a><span class="kw">use crate</span>::{AstNode, ast}; |
| <a href=#8 id=8 data-nosnippet>8</a> |
| <a href=#9 id=9 data-nosnippet>9</a><span class="kw">pub fn </span>parse_expr_from_str(s: <span class="kw-2">&</span>str, edition: Edition) -> <span class="prelude-ty">Option</span><ast::Expr> { |
| <a href=#10 id=10 data-nosnippet>10</a> <span class="kw">let </span>s = s.trim(); |
| <a href=#11 id=11 data-nosnippet>11</a> |
| <a href=#12 id=12 data-nosnippet>12</a> <span class="kw">let </span>file = ast::SourceFile::parse( |
| <a href=#13 id=13 data-nosnippet>13</a> <span class="comment">// Need a newline because the text may contain line comments. |
| <a href=#14 id=14 data-nosnippet>14</a> </span><span class="kw-2">&</span><span class="macro">format!</span>(<span class="string">"const _: () = ({s}\n);"</span>), |
| <a href=#15 id=15 data-nosnippet>15</a> edition, |
| <a href=#16 id=16 data-nosnippet>16</a> ); |
| <a href=#17 id=17 data-nosnippet>17</a> <span class="kw">let </span>expr = file.syntax_node().descendants().find_map(ast::ParenExpr::cast)<span class="question-mark">?</span>; |
| <a href=#18 id=18 data-nosnippet>18</a> <span class="comment">// Can't check the text because the original text may contain whitespace and comments. |
| <a href=#19 id=19 data-nosnippet>19</a> // Wrap in parentheses to better allow for verification. Of course, the real fix is |
| <a href=#20 id=20 data-nosnippet>20</a> // to get rid of this hack. |
| <a href=#21 id=21 data-nosnippet>21</a> </span>expr.expr() |
| <a href=#22 id=22 data-nosnippet>22</a>}</code></pre></div></section></main></body></html> |
