45 lines
1.4 KiB
JavaScript
45 lines
1.4 KiB
JavaScript
'use strict';
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var rust$1 = require('@lezer/rust');
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var language = require('@codemirror/language');
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/**
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A syntax provider based on the [Lezer Rust
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parser](https://github.com/lezer-parser/rust), extended with
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highlighting and indentation information.
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*/
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const rustLanguage = language.LRLanguage.define({
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name: "rust",
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parser: rust$1.parser.configure({
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props: [
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language.indentNodeProp.add({
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IfExpression: language.continuedIndent({ except: /^\s*({|else\b)/ }),
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"String BlockComment": () => null,
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"AttributeItem": cx => cx.continue(),
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"Statement MatchArm": language.continuedIndent()
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}),
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language.foldNodeProp.add(type => {
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if (/(Block|edTokens|List)$/.test(type.name))
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return language.foldInside;
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if (type.name == "BlockComment")
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return tree => ({ from: tree.from + 2, to: tree.to - 2 });
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return undefined;
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})
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]
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}),
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languageData: {
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commentTokens: { line: "//", block: { open: "/*", close: "*/" } },
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indentOnInput: /^\s*(?:\{|\})$/,
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closeBrackets: { stringPrefixes: ["b", "r", "br"] }
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}
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});
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/**
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Rust language support
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*/
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function rust() {
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return new language.LanguageSupport(rustLanguage);
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}
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exports.rust = rust;
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exports.rustLanguage = rustLanguage;
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