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290 lines
17 KiB
HTML
290 lines
17 KiB
HTML
4 months ago
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<!DOCTYPE HTML>
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<html lang="en" class="colibri" dir="ltr">
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<head>
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<!-- Book generated using mdBook -->
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<meta charset="UTF-8">
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<title>Adding languages</title>
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<!-- Highlight.js Stylesheets -->
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<link rel="stylesheet" href="../highlight.css">
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<link rel="stylesheet" href="../ayu-highlight.css">
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<!-- Custom theme stylesheets -->
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<script>
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try {
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var theme = localStorage.getItem('mdbook-theme');
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var sidebar = localStorage.getItem('mdbook-sidebar');
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if (theme.startsWith('"') && theme.endsWith('"')) {
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localStorage.setItem('mdbook-theme', theme.slice(1, theme.length - 1));
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<!-- Set the theme before any content is loaded, prevents flash -->
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<script>
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try { theme = localStorage.getItem('mdbook-theme'); } catch(e) { }
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if (theme === null || theme === undefined) { theme = default_theme; }
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var html = document.querySelector('html');
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html.classList.remove('colibri')
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sidebar = 'hidden';
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sidebar_toggle.checked = sidebar === 'visible';
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body.classList.remove('sidebar-visible');
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body.classList.add("sidebar-" + sidebar);
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<nav id="sidebar" class="sidebar" aria-label="Table of contents">
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<div class="sidebar-scrollbox">
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<ol class="chapter"><li class="chapter-item expanded affix "><a href="../title-page.html">Helix</a></li><li class="chapter-item expanded "><a href="../install.html"><strong aria-hidden="true">1.</strong> Installation</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../package-managers.html"><strong aria-hidden="true">1.1.</strong> Package Managers</a></li><li class="chapter-item expanded "><a href="../building-from-source.html"><strong aria-hidden="true">1.2.</strong> Building from source</a></li></ol></li><li class="chapter-item expanded "><a href="../usage.html"><strong aria-hidden="true">2.</strong> Usage</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../registers.html"><strong aria-hidden="true">2.1.</strong> Registers</a></li><li class="chapter-item expanded "><a href="../surround.html"><strong aria-hidden="true">2.2.</strong> Surround</a></li><li class="chapter-item expanded "><a href="../textobjects.html"><strong aria-hidden="true">2.3.</strong> Textobjects</a></li><li class="chapter-item expanded "><a href="../syntax-aware-motions.html"><strong aria-hidden="true">2.4.</strong> Syntax aware motions</a></li><li class="chapter-item expanded "><a href="../keymap.html"><strong aria-hidden="true">2.5.</strong> Keymap</a></li><li class="chapter-item expanded "><a href="../commands.html"><strong aria-hidden="true">2.6.</strong> Commands</a></li><li class="chapter-item expanded "><a href="../lang-support.html"><strong aria-hidden="true">2.7.</strong> Language support</a></li></ol></li><li class="chapter-item expanded "><a href="../from-vim.html"><strong aria-hidden="true">3.</strong> Migrating from Vim</a></li><li class="chapter-item expanded "><a href="../configuration.html"><strong aria-hidden="true">4.</strong> Configuration</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../editor.html"><strong aria-hidden="true">4.1.</strong> Editor</a></li><li class="chapter-item expanded "><a href="../themes.html"><strong aria-hidden="true">4.2.</strong> Themes</a></li><li class="chapter-item expanded "><a href="../remapping.html"><strong aria-hidden="true">4.3.</strong> Key remapping</a></li><li class="chapter-item expanded "><a href="../languages.html"><strong aria-hidden="true">4.4.</strong> Languages</a></li></ol></li><li class="chapter-item expanded "><a href="../guides/index.html"><strong aria-hidden="true">5.</strong> Guides</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../guides/adding_languages.html" class="active"><strong aria-hidden="true">5.1.</strong> Adding languages</a></li><li class="chapter-item expanded "><a href="../guides/textobject.html"><strong aria-hidden="true">5.2.</strong> Adding textobject queries</a></li><li class="chapter-item expanded "><a href="../guides/indent.html"><strong aria-hidden="true">5.3.</strong> Adding indent queries</a></li><li class="chapter-item expanded "><a href="../guides/injection.html"><strong aria-hidden="true">5.4.</strong> Adding injection queries</a></li></ol></li></ol>
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<div id="sidebar-resize-handle" class="sidebar-resize-handle"></div>
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<!-- Track and set sidebar scroll position -->
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sessionStorage.setItem('sidebar-scroll', sidebarScrollbox.scrollTop);
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}
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}, { passive: true });
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var sidebarScrollTop = sessionStorage.getItem('sidebar-scroll');
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sessionStorage.removeItem('sidebar-scroll');
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if (sidebarScrollTop) {
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// preserve sidebar scroll position when navigating via links within sidebar
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sidebarScrollbox.scrollTop = sidebarScrollTop;
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} else {
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// scroll sidebar to current active section when navigating via "next/previous chapter" buttons
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var activeSection = document.querySelector('#sidebar .active');
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if (activeSection) {
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activeSection.scrollIntoView({ block: 'center' });
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}
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}
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</script>
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<div id="page-wrapper" class="page-wrapper">
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<div class="page">
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<div id="menu-bar-hover-placeholder"></div>
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<div id="menu-bar" class="menu-bar sticky">
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<div class="left-buttons">
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</label>
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<button id="theme-toggle" class="icon-button" type="button" title="Change theme" aria-label="Change theme" aria-haspopup="true" aria-expanded="false" aria-controls="theme-list">
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<i class="fa fa-paint-brush"></i>
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</button>
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<ul id="theme-list" class="theme-popup" aria-label="Themes" role="menu">
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<li role="none"><button role="menuitem" class="theme" id="light">Light</button></li>
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<li role="none"><button role="menuitem" class="theme" id="rust">Rust</button></li>
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<li role="none"><button role="menuitem" class="theme" id="coal">Coal</button></li>
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<li role="none"><button role="menuitem" class="theme" id="navy">Navy</button></li>
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<li role="none"><button role="menuitem" class="theme" id="ayu">Ayu</button></li>
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<li role="none"><button role="menuitem" class="theme" id="colibri">Colibri</button></li>
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</ul>
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<button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
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<i class="fa fa-search"></i>
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</button>
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</div>
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<h1 class="menu-title"></h1>
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<div class="right-buttons">
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<a href="../print.html" title="Print this book" aria-label="Print this book">
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<i id="print-button" class="fa fa-print"></i>
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</a>
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<a href="https://github.com/helix-editor/helix" title="Git repository" aria-label="Git repository">
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</a>
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<a href="https://github.com/helix-editor/helix/edit/master/book/src/guides/adding_languages.md" title="Suggest an edit" aria-label="Suggest an edit">
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</div>
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<div id="search-wrapper" class="hidden">
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<form id="searchbar-outer" class="searchbar-outer">
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<input type="search" id="searchbar" name="searchbar" placeholder="Search this book ..." aria-controls="searchresults-outer" aria-describedby="searchresults-header">
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</form>
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<div id="searchresults-outer" class="searchresults-outer hidden">
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<div id="searchresults-header" class="searchresults-header"></div>
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<ul id="searchresults">
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</ul>
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</div>
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</div>
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<!-- Apply ARIA attributes after the sidebar and the sidebar toggle button are added to the DOM -->
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<script>
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document.getElementById('sidebar-toggle').setAttribute('aria-expanded', sidebar === 'visible');
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document.getElementById('sidebar').setAttribute('aria-hidden', sidebar !== 'visible');
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Array.from(document.querySelectorAll('#sidebar a')).forEach(function(link) {
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link.setAttribute('tabIndex', sidebar === 'visible' ? 0 : -1);
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});
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</script>
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<div id="content" class="content">
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<main>
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<h1 id="adding-new-languages-to-helix"><a class="header" href="#adding-new-languages-to-helix">Adding new languages to Helix</a></h1>
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<p>In order to add a new language to Helix, you will need to follow the steps
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below.</p>
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<h2 id="language-configuration"><a class="header" href="#language-configuration">Language configuration</a></h2>
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<ol>
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<li>Add a new <code>[[language]]</code> entry in the <code>languages.toml</code> file and provide the
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necessary configuration for the new language. For more information on
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language configuration, refer to the
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<a href="../languages.html">language configuration section</a> of the documentation.
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A new language server can be added by extending the <code>[language-server]</code> table in the same file.</li>
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<li>If you are adding a new language or updating an existing language server
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configuration, run the command <code>cargo xtask docgen</code> to update the
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<a href="../lang-support.html">Language Support</a> documentation.</li>
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</ol>
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<blockquote>
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<p>💡 If you are adding a new Language Server configuration, make sure to update
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the
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<a href="https://github.com/helix-editor/helix/wiki/Language-Server-Configurations">Language Server Wiki</a>
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with the installation instructions.</p>
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</blockquote>
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<h2 id="grammar-configuration"><a class="header" href="#grammar-configuration">Grammar configuration</a></h2>
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<ol>
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<li>If a tree-sitter grammar is available for the new language, add a new
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<code>[[grammar]]</code> entry to the <code>languages.toml</code> file.</li>
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<li>If you are testing the grammar locally, you can use the <code>source.path</code> key
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with an absolute path to the grammar. However, before submitting a pull
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request, make sure to switch to using <code>source.git</code>.</li>
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</ol>
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<h2 id="queries"><a class="header" href="#queries">Queries</a></h2>
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<ol>
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<li>In order to provide syntax highlighting and indentation for the new language,
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you will need to add queries.</li>
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<li>Create a new directory for the language with the path
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<code>runtime/queries/<name>/</code>.</li>
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<li>Refer to the
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<a href="https://tree-sitter.github.io/tree-sitter/syntax-highlighting#queries">tree-sitter website</a>
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for more information on writing queries.</li>
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<li>A list of highlight captures can be found <a href="https://docs.helix-editor.com/themes.html#scopes">on the themes page</a>.</li>
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</ol>
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<blockquote>
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<p>💡 In Helix, the first matching query takes precedence when evaluating
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queries, which is different from other editors such as Neovim where the last
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matching query supersedes the ones before it. See
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<a href="https://github.com/helix-editor/helix/pull/1170#issuecomment-997294090">this issue</a>
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for an example.</p>
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</blockquote>
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<h2 id="common-issues"><a class="header" href="#common-issues">Common issues</a></h2>
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<ul>
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<li>If you encounter errors when running Helix after switching branches, you may
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need to update the tree-sitter grammars. Run the command <code>hx --grammar fetch</code>
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to fetch the grammars and <code>hx --grammar build</code> to build any out-of-date
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grammars.</li>
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<li>If a parser is causing a segfault, or you want to remove it, make sure to
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remove the compiled parser located at <code>runtime/grammars/<name>.so</code>.</li>
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<li>If you are attempting to add queries and Helix is unable to locate them, ensure that the environment variable <code>HELIX_RUNTIME</code> is set to the location of the <code>runtime</code> folder you're developing in.</li>
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</ul>
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</main>
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<nav class="nav-wrapper" aria-label="Page navigation">
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<!-- Mobile navigation buttons -->
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<a rel="prev" href="../guides/index.html" class="mobile-nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
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<i class="fa fa-angle-left"></i>
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</a>
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<a rel="next prefetch" href="../guides/textobject.html" class="mobile-nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
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<a rel="prev" href="../guides/index.html" class="nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
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<script>
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window.playground_copyable = true;
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</script>
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<script src="../elasticlunr.min.js"></script>
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<!-- Custom JS scripts -->
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</div>
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</body>
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</html>
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