82 lines
2.2 KiB
JavaScript
82 lines
2.2 KiB
JavaScript
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var TYPE = require('../../tokenizer').TYPE;
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var WHITESPACE = TYPE.WhiteSpace;
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var COMMENT = TYPE.Comment;
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var ATKEYWORD = TYPE.AtKeyword;
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var CDO = TYPE.CDO;
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var CDC = TYPE.CDC;
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var 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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module.exports = {
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name: 'StyleSheet',
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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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parse: function() {
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var start = this.scanner.tokenStart;
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var children = this.createList();
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var child;
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scan:
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while (!this.scanner.eof) {
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switch (this.scanner.tokenType) {
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case WHITESPACE:
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this.scanner.next();
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continue;
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case COMMENT:
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// ignore comments except exclamation comments (i.e. /*! .. */) on top level
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if (this.scanner.source.charCodeAt(this.scanner.tokenStart + 2) !== EXCLAMATIONMARK) {
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this.scanner.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 CDO: // <!--
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child = this.CDO();
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break;
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case 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 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.scanner.tokenStart),
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children: children
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};
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},
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generate: function(node) {
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this.children(node);
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},
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walkContext: 'stylesheet'
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};
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