| <!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/parsing.rs`."><title>parsing.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-aa0817cf.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="1.90.0 (1159e78c4 2025-09-14)" data-channel="1.90.0" data-search-js="search-fa3e91e5.js" data-settings-js="settings-5514c975.js" ><script src="../../static.files/storage-68b7e25d.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-eebb9057.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>parsing.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">//! Lexing, bridging to parser (which does the actual parsing) and |
| <a href=#2 id=2 data-nosnippet>2</a>//! incremental reparsing. |
| <a href=#3 id=3 data-nosnippet>3</a> |
| <a href=#4 id=4 data-nosnippet>4</a></span><span class="kw">mod </span>reparsing; |
| <a href=#5 id=5 data-nosnippet>5</a> |
| <a href=#6 id=6 data-nosnippet>6</a><span class="kw">use </span>rowan::TextRange; |
| <a href=#7 id=7 data-nosnippet>7</a> |
| <a href=#8 id=8 data-nosnippet>8</a><span class="kw">use crate</span>::{SyntaxError, SyntaxTreeBuilder, syntax_node::GreenNode}; |
| <a href=#9 id=9 data-nosnippet>9</a> |
| <a href=#10 id=10 data-nosnippet>10</a><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">use </span><span class="kw">crate</span>::parsing::reparsing::incremental_reparse; |
| <a href=#11 id=11 data-nosnippet>11</a> |
| <a href=#12 id=12 data-nosnippet>12</a><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>parse_text(text: <span class="kw-2">&</span>str, edition: parser::Edition) -> (GreenNode, Vec<SyntaxError>) { |
| <a href=#13 id=13 data-nosnippet>13</a> <span class="kw">let </span>_p = <span class="macro">tracing::info_span!</span>(<span class="string">"parse_text"</span>).entered(); |
| <a href=#14 id=14 data-nosnippet>14</a> <span class="kw">let </span>lexed = parser::LexedStr::new(edition, text); |
| <a href=#15 id=15 data-nosnippet>15</a> <span class="kw">let </span>parser_input = lexed.to_input(edition); |
| <a href=#16 id=16 data-nosnippet>16</a> <span class="kw">let </span>parser_output = parser::TopEntryPoint::SourceFile.parse(<span class="kw-2">&</span>parser_input, edition); |
| <a href=#17 id=17 data-nosnippet>17</a> <span class="kw">let </span>(node, errors, _eof) = build_tree(lexed, parser_output); |
| <a href=#18 id=18 data-nosnippet>18</a> (node, errors) |
| <a href=#19 id=19 data-nosnippet>19</a>} |
| <a href=#20 id=20 data-nosnippet>20</a> |
| <a href=#21 id=21 data-nosnippet>21</a><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>parse_text_at( |
| <a href=#22 id=22 data-nosnippet>22</a> text: <span class="kw-2">&</span>str, |
| <a href=#23 id=23 data-nosnippet>23</a> entry: parser::TopEntryPoint, |
| <a href=#24 id=24 data-nosnippet>24</a> edition: parser::Edition, |
| <a href=#25 id=25 data-nosnippet>25</a>) -> (GreenNode, Vec<SyntaxError>) { |
| <a href=#26 id=26 data-nosnippet>26</a> <span class="kw">let </span>_p = <span class="macro">tracing::info_span!</span>(<span class="string">"parse_text_at"</span>).entered(); |
| <a href=#27 id=27 data-nosnippet>27</a> <span class="kw">let </span>lexed = parser::LexedStr::new(edition, text); |
| <a href=#28 id=28 data-nosnippet>28</a> <span class="kw">let </span>parser_input = lexed.to_input(edition); |
| <a href=#29 id=29 data-nosnippet>29</a> <span class="kw">let </span>parser_output = entry.parse(<span class="kw-2">&</span>parser_input, edition); |
| <a href=#30 id=30 data-nosnippet>30</a> <span class="kw">let </span>(node, errors, _eof) = build_tree(lexed, parser_output); |
| <a href=#31 id=31 data-nosnippet>31</a> (node, errors) |
| <a href=#32 id=32 data-nosnippet>32</a>} |
| <a href=#33 id=33 data-nosnippet>33</a> |
| <a href=#34 id=34 data-nosnippet>34</a><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>build_tree( |
| <a href=#35 id=35 data-nosnippet>35</a> lexed: parser::LexedStr<<span class="lifetime">'_</span>>, |
| <a href=#36 id=36 data-nosnippet>36</a> parser_output: parser::Output, |
| <a href=#37 id=37 data-nosnippet>37</a>) -> (GreenNode, Vec<SyntaxError>, bool) { |
| <a href=#38 id=38 data-nosnippet>38</a> <span class="kw">let </span>_p = <span class="macro">tracing::info_span!</span>(<span class="string">"build_tree"</span>).entered(); |
| <a href=#39 id=39 data-nosnippet>39</a> <span class="kw">let </span><span class="kw-2">mut </span>builder = SyntaxTreeBuilder::default(); |
| <a href=#40 id=40 data-nosnippet>40</a> |
| <a href=#41 id=41 data-nosnippet>41</a> <span class="kw">let </span>is_eof = lexed.intersperse_trivia(<span class="kw-2">&</span>parser_output, <span class="kw-2">&mut </span>|step| <span class="kw">match </span>step { |
| <a href=#42 id=42 data-nosnippet>42</a> parser::StrStep::Token { kind, text } => builder.token(kind, text), |
| <a href=#43 id=43 data-nosnippet>43</a> parser::StrStep::Enter { kind } => builder.start_node(kind), |
| <a href=#44 id=44 data-nosnippet>44</a> parser::StrStep::Exit => builder.finish_node(), |
| <a href=#45 id=45 data-nosnippet>45</a> parser::StrStep::Error { msg, pos } => { |
| <a href=#46 id=46 data-nosnippet>46</a> builder.error(msg.to_owned(), pos.try_into().unwrap()) |
| <a href=#47 id=47 data-nosnippet>47</a> } |
| <a href=#48 id=48 data-nosnippet>48</a> }); |
| <a href=#49 id=49 data-nosnippet>49</a> |
| <a href=#50 id=50 data-nosnippet>50</a> <span class="kw">let </span>(node, <span class="kw-2">mut </span>errors) = builder.finish_raw(); |
| <a href=#51 id=51 data-nosnippet>51</a> <span class="kw">for </span>(i, err) <span class="kw">in </span>lexed.errors() { |
| <a href=#52 id=52 data-nosnippet>52</a> <span class="kw">let </span>text_range = lexed.text_range(i); |
| <a href=#53 id=53 data-nosnippet>53</a> <span class="kw">let </span>text_range = TextRange::new( |
| <a href=#54 id=54 data-nosnippet>54</a> text_range.start.try_into().unwrap(), |
| <a href=#55 id=55 data-nosnippet>55</a> text_range.end.try_into().unwrap(), |
| <a href=#56 id=56 data-nosnippet>56</a> ); |
| <a href=#57 id=57 data-nosnippet>57</a> errors.push(SyntaxError::new(err, text_range)) |
| <a href=#58 id=58 data-nosnippet>58</a> } |
| <a href=#59 id=59 data-nosnippet>59</a> |
| <a href=#60 id=60 data-nosnippet>60</a> (node, errors, is_eof) |
| <a href=#61 id=61 data-nosnippet>61</a>}</code></pre></div></section></main></body></html> |
