68 lines
1.4 KiB
JavaScript
68 lines
1.4 KiB
JavaScript
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class OldSelector {
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constructor (selector, prefix) {
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this.prefix = prefix
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this.prefixed = selector.prefixed(this.prefix)
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this.regexp = selector.regexp(this.prefix)
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this.prefixeds = selector
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.possible()
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.map(x => [selector.prefixed(x), selector.regexp(x)])
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this.unprefixed = selector.name
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this.nameRegexp = selector.regexp()
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}
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/**
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* Is rule a hack without unprefixed version bottom
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*/
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isHack (rule) {
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let index = rule.parent.index(rule) + 1
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let rules = rule.parent.nodes
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while (index < rules.length) {
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let before = rules[index].selector
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if (!before) {
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return true
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}
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if (before.includes(this.unprefixed) && before.match(this.nameRegexp)) {
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return false
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}
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let some = false
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for (let [string, regexp] of this.prefixeds) {
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if (before.includes(string) && before.match(regexp)) {
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some = true
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break
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}
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}
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if (!some) {
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return true
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}
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index += 1
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}
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return true
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}
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/**
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* Does rule contain an unnecessary prefixed selector
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*/
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check (rule) {
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if (!rule.selector.includes(this.prefixed)) {
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return false
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}
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if (!rule.selector.match(this.regexp)) {
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return false
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}
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if (this.isHack(rule)) {
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return false
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}
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return true
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}
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}
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module.exports = OldSelector
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