70 lines
2.8 KiB
JavaScript
70 lines
2.8 KiB
JavaScript
import { parser } from '@lezer/php';
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import { parseMixed } from '@lezer/common';
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import { html } from '@codemirror/lang-html';
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import { LRLanguage, indentNodeProp, continuedIndent, delimitedIndent, foldNodeProp, foldInside, LanguageSupport } from '@codemirror/language';
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/**
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A language provider based on the [Lezer PHP
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parser](https://github.com/lezer-parser/php), extended with
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highlighting and indentation information.
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*/
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const phpLanguage = /*@__PURE__*/LRLanguage.define({
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name: "php",
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parser: /*@__PURE__*/parser.configure({
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props: [
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/*@__PURE__*/indentNodeProp.add({
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IfStatement: /*@__PURE__*/continuedIndent({ except: /^\s*({|else\b|elseif\b|endif\b)/ }),
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TryStatement: /*@__PURE__*/continuedIndent({ except: /^\s*({|catch\b|finally\b)/ }),
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SwitchBody: context => {
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let after = context.textAfter, closed = /^\s*\}/.test(after), isCase = /^\s*(case|default)\b/.test(after);
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return context.baseIndent + (closed ? 0 : isCase ? 1 : 2) * context.unit;
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},
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ColonBlock: cx => cx.baseIndent + cx.unit,
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"Block EnumBody DeclarationList": /*@__PURE__*/delimitedIndent({ closing: "}" }),
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ArrowFunction: cx => cx.baseIndent + cx.unit,
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"String BlockComment": () => null,
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Statement: /*@__PURE__*/continuedIndent({ except: /^({|end(for|foreach|switch|while)\b)/ })
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}),
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/*@__PURE__*/foldNodeProp.add({
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"Block EnumBody DeclarationList SwitchBody ArrayExpression ValueList": foldInside,
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ColonBlock(tree) { return { from: tree.from + 1, to: tree.to }; },
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BlockComment(tree) { return { from: tree.from + 2, to: tree.to - 2 }; }
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})
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]
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}),
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languageData: {
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commentTokens: { block: { open: "/*", close: "*/" }, line: "//" },
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indentOnInput: /^\s*(?:case |default:|end(?:if|for(?:each)?|switch|while)|else(?:if)?|\{|\})$/,
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wordChars: "$",
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closeBrackets: { stringPrefixes: ["b", "B"] }
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}
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});
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/**
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PHP language support.
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*/
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function php(config = {}) {
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let support = [], base;
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if (config.baseLanguage === null) ;
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else if (config.baseLanguage) {
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base = config.baseLanguage;
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}
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else {
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let htmlSupport = html({ matchClosingTags: false });
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support.push(htmlSupport.support);
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base = htmlSupport.language;
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}
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return new LanguageSupport(phpLanguage.configure({
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wrap: base && parseMixed(node => {
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if (!node.type.isTop)
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return null;
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return {
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parser: base.parser,
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overlay: node => node.name == "Text"
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};
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}),
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top: config.plain ? "Program" : "Template"
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}), support);
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}
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export { php, phpLanguage };
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