110 lines
4.4 KiB
JavaScript
110 lines
4.4 KiB
JavaScript
"use strict";
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var __importDefault = (this && this.__importDefault) || function (mod) {
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return (mod && mod.__esModule) ? mod : { "default": mod };
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.styleNodeRange = exports.styleNodeLoc = exports.parseStyleContext = void 0;
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const postcss_1 = __importDefault(require("postcss"));
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const postcss_scss_1 = require("postcss-scss");
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/**
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* Extracts style source from a SvelteStyleElement and parses it into a PostCSS AST.
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*/
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function parseStyleContext(styleElement, ctx) {
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if (!styleElement || !styleElement.endTag) {
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return { status: "no-style-element" };
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}
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let sourceLang = "css";
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for (const attribute of styleElement.startTag.attributes) {
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if (attribute.type === "SvelteAttribute" &&
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attribute.key.name === "lang" &&
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attribute.value.length > 0 &&
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attribute.value[0].type === "SvelteLiteral") {
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sourceLang = attribute.value[0].value;
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}
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}
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let parseFn, sourceAst;
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switch (sourceLang) {
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case "css":
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parseFn = postcss_1.default.parse;
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break;
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case "scss":
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parseFn = postcss_scss_1.parse;
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break;
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default:
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return { status: "unknown-lang", sourceLang };
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}
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const styleCode = ctx.code.slice(styleElement.startTag.range[1], styleElement.endTag.range[0]);
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try {
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sourceAst = parseFn(styleCode, {
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from: ctx.parserOptions.filePath,
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});
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}
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catch (error) {
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return { status: "parse-error", sourceLang, error };
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}
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fixPostCSSNodeLocation(sourceAst, styleElement);
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sourceAst.walk((node) => fixPostCSSNodeLocation(node, styleElement));
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return { status: "success", sourceLang, sourceAst };
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}
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exports.parseStyleContext = parseStyleContext;
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/**
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* Extracts a node location (like that of any ESLint node) from a parsed svelte style node.
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*/
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function styleNodeLoc(node) {
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if (node.source === undefined) {
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return {};
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}
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return {
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start: node.source.start !== undefined
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? {
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line: node.source.start.line,
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column: node.source.start.column - 1,
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}
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: undefined,
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end: node.source.end !== undefined
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? {
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line: node.source.end.line,
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column: node.source.end.column,
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}
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: undefined,
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};
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}
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exports.styleNodeLoc = styleNodeLoc;
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/**
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* Extracts a node range (like that of any ESLint node) from a parsed svelte style node.
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*/
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function styleNodeRange(node) {
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if (node.source === undefined) {
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return [undefined, undefined];
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}
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return [
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node.source.start !== undefined ? node.source.start.offset : undefined,
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node.source.end !== undefined ? node.source.end.offset + 1 : undefined,
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];
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}
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exports.styleNodeRange = styleNodeRange;
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/**
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* Fixes PostCSS AST locations to be relative to the whole file instead of relative to the <style> element.
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*/
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function fixPostCSSNodeLocation(node, styleElement) {
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var _a, _b, _c, _d, _e, _f, _g, _h, _j, _k, _l, _m;
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if (((_b = (_a = node.source) === null || _a === void 0 ? void 0 : _a.start) === null || _b === void 0 ? void 0 : _b.offset) !== undefined) {
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node.source.start.offset += styleElement.startTag.range[1];
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}
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if (((_d = (_c = node.source) === null || _c === void 0 ? void 0 : _c.start) === null || _d === void 0 ? void 0 : _d.line) !== undefined) {
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node.source.start.line += styleElement.loc.start.line - 1;
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}
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if (((_f = (_e = node.source) === null || _e === void 0 ? void 0 : _e.end) === null || _f === void 0 ? void 0 : _f.offset) !== undefined) {
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node.source.end.offset += styleElement.startTag.range[1];
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}
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if (((_h = (_g = node.source) === null || _g === void 0 ? void 0 : _g.end) === null || _h === void 0 ? void 0 : _h.line) !== undefined) {
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node.source.end.line += styleElement.loc.start.line - 1;
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}
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if (((_k = (_j = node.source) === null || _j === void 0 ? void 0 : _j.start) === null || _k === void 0 ? void 0 : _k.line) === styleElement.loc.start.line) {
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node.source.start.column += styleElement.startTag.loc.end.column;
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}
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if (((_m = (_l = node.source) === null || _l === void 0 ? void 0 : _l.end) === null || _m === void 0 ? void 0 : _m.line) === styleElement.loc.start.line) {
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node.source.end.column += styleElement.startTag.loc.end.column;
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}
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}
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