84 lines
2.0 KiB
JavaScript
84 lines
2.0 KiB
JavaScript
'use strict';
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const types = require('../../tokenizer/types.cjs');
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const EXCLAMATIONMARK = 0x0021; // U+0021 EXCLAMATION MARK (!)
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function consumeRaw(startToken) {
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return this.Raw(startToken, null, false);
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}
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const name = 'StyleSheet';
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const walkContext = 'stylesheet';
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const structure = {
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children: [[
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'Comment',
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'CDO',
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'CDC',
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'Atrule',
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'Rule',
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'Raw'
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]]
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};
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function parse() {
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const start = this.tokenStart;
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const children = this.createList();
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let child;
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while (!this.eof) {
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switch (this.tokenType) {
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case types.WhiteSpace:
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this.next();
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continue;
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case types.Comment:
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// ignore comments except exclamation comments (i.e. /*! .. */) on top level
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if (this.charCodeAt(this.tokenStart + 2) !== EXCLAMATIONMARK) {
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this.next();
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continue;
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}
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child = this.Comment();
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break;
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case types.CDO: // <!--
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child = this.CDO();
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break;
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case types.CDC: // -->
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child = this.CDC();
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break;
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// CSS Syntax Module Level 3
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// §2.2 Error handling
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// At the "top level" of a stylesheet, an <at-keyword-token> starts an at-rule.
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case types.AtKeyword:
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child = this.parseWithFallback(this.Atrule, consumeRaw);
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break;
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// Anything else starts a qualified rule ...
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default:
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child = this.parseWithFallback(this.Rule, consumeRaw);
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}
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children.push(child);
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}
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return {
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type: 'StyleSheet',
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loc: this.getLocation(start, this.tokenStart),
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children
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};
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}
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function generate(node) {
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this.children(node);
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}
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exports.generate = generate;
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exports.name = name;
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exports.parse = parse;
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exports.structure = structure;
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exports.walkContext = walkContext;
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