55 lines
1.0 KiB
JavaScript
55 lines
1.0 KiB
JavaScript
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'use strict';
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const types = require('../../tokenizer/types.cjs');
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const name = 'Nth';
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const structure = {
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nth: ['AnPlusB', 'Identifier'],
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selector: ['SelectorList', null]
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};
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function parse() {
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this.skipSC();
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const start = this.tokenStart;
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let end = start;
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let selector = null;
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let nth;
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if (this.lookupValue(0, 'odd') || this.lookupValue(0, 'even')) {
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nth = this.Identifier();
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} else {
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nth = this.AnPlusB();
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}
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end = this.tokenStart;
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this.skipSC();
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if (this.lookupValue(0, 'of')) {
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this.next();
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selector = this.SelectorList();
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end = this.tokenStart;
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}
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return {
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type: 'Nth',
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loc: this.getLocation(start, end),
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nth,
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selector
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};
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}
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function generate(node) {
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this.node(node.nth);
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if (node.selector !== null) {
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this.token(types.Ident, 'of');
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this.node(node.selector);
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}
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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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