You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
54 lines
1.0 KiB
54 lines
1.0 KiB
'use strict'; |
|
|
|
const types = require('../../tokenizer/types.cjs'); |
|
|
|
const name = 'Nth'; |
|
const structure = { |
|
nth: ['AnPlusB', 'Identifier'], |
|
selector: ['SelectorList', null] |
|
}; |
|
|
|
function parse() { |
|
this.skipSC(); |
|
|
|
const start = this.tokenStart; |
|
let end = start; |
|
let selector = null; |
|
let nth; |
|
|
|
if (this.lookupValue(0, 'odd') || this.lookupValue(0, 'even')) { |
|
nth = this.Identifier(); |
|
} else { |
|
nth = this.AnPlusB(); |
|
} |
|
|
|
end = this.tokenStart; |
|
this.skipSC(); |
|
|
|
if (this.lookupValue(0, 'of')) { |
|
this.next(); |
|
|
|
selector = this.SelectorList(); |
|
end = this.tokenStart; |
|
} |
|
|
|
return { |
|
type: 'Nth', |
|
loc: this.getLocation(start, end), |
|
nth, |
|
selector |
|
}; |
|
} |
|
|
|
function generate(node) { |
|
this.node(node.nth); |
|
if (node.selector !== null) { |
|
this.token(types.Ident, 'of'); |
|
this.node(node.selector); |
|
} |
|
} |
|
|
|
exports.generate = generate; |
|
exports.name = name; |
|
exports.parse = parse; |
|
exports.structure = structure;
|
|
|