95 lines
2.3 KiB
Markdown
95 lines
2.3 KiB
Markdown
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# CSS Modules: CSS selector Tokenizer
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Parses and stringifies CSS selectors.
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``` js
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import Tokenizer from "css-selector-tokenizer";
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let input = "a#content.active > div::first-line [data-content], a:not(:visited)";
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Tokenizer.parse(input); // === expected
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let expected = {
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type: "selectors",
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nodes: [
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{
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type: "selector",
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nodes: [
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{ type: "element", name: "a" },
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{ type: "id", name: "content" },
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{ type: "class", name: "active" },
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{ type: "operator", operator: ">", before: " ", after: " " },
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{ type: "element", name: "div" },
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{ type: "pseudo-element", name: "first-line" },
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{ type: "spacing", value: " " },
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{ type: "attribute", content: "data-content" },
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]
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},
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{
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type: "selector",
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nodes: [
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{ type: "element", name: "a" },
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{ type: "nested-pseudo-class", name: "not", nodes: [
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{
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type: "selector",
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nodes: [
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{ type: "pseudo-class", name: "visited" }
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]
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}
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] }
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],
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before: " "
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}
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]
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}
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Tokenizer.stringify(expected) // === input
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// * => { type: "universal" }
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// foo|element = { type: "element", name: "element", namespace: "foo" }
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// *|* = { type: "universal", namespace: "*" }
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// :has(h1, h2) => { type: "nested-pseudo-class", name: "has", nodes: [
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// {
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// type: "selector",
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// nodes: [
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// { type: "element", name: "h1" }
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// ]
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// },
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// {
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// type: "selector",
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// nodes: [
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// { type: "element", name: "h2" }
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// ],
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// before: " "
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// }
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// ] }
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```
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## Building
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```
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npm install
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npm test
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```
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[](https://travis-ci.org/css-modules/css-selector-tokenizer)
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* Lines: [](https://coveralls.io/r/css-modules/css-selector-tokenizer?branch=master)
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* Statements: [](http://codecov.io/github/css-modules/css-selector-tokenizer?branch=master)
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## Development
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- `npm autotest` will watch `lib` and `test` for changes and retest
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## License
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MIT
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## With thanks
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- Mark Dalgleish
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- Glen Maddern
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- Guy Bedford
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---
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Tobias Koppers, 2015.
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