61 lines
1.6 KiB
JavaScript
61 lines
1.6 KiB
JavaScript
module.exports = function calcAtRulePatternPriority(pattern, node) {
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// 0 — it pattern doesn't match
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// 1 — pattern without `name` and `hasBlock`
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// 10010 — pattern match `hasBlock`
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// 10100 — pattern match `name`
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// 20110 — pattern match `name` and `hasBlock`
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// 21100 — patter match `name` and `parameter`
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// 31110 — patter match `name`, `parameter`, and `hasBlock`
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let priority = 0;
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// match `hasBlock`
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if (pattern.hasOwnProperty('hasBlock') && node.hasBlock === pattern.hasBlock) {
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priority += 10;
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priority += 10000;
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}
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// match `name`
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if (pattern.hasOwnProperty('name') && node.name === pattern.name) {
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priority += 100;
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priority += 10000;
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}
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// match `name`
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if (pattern.hasOwnProperty('parameter') && pattern.parameter.test(node.parameter)) {
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priority += 1100;
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priority += 10000;
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}
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// doesn't have `name` and `hasBlock`
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if (
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!pattern.hasOwnProperty('hasBlock') &&
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!pattern.hasOwnProperty('name') &&
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!pattern.hasOwnProperty('paremeter')
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) {
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priority = 1;
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}
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// patter has `name` and `hasBlock`, but it doesn't match both properties
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if (pattern.hasOwnProperty('hasBlock') && pattern.hasOwnProperty('name') && priority < 20000) {
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priority = 0;
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}
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// patter has `name` and `parameter`, but it doesn't match both properties
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if (pattern.hasOwnProperty('name') && pattern.hasOwnProperty('parameter') && priority < 21100) {
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priority = 0;
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}
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// patter has `name`, `parameter`, and `hasBlock`, but it doesn't match all properties
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if (
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pattern.hasOwnProperty('name') &&
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pattern.hasOwnProperty('parameter') &&
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pattern.hasOwnProperty('hasBlock') &&
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priority < 30000
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) {
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priority = 0;
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}
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return priority;
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};
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