Opal-Estate-Pro/node_modules/csso/lib/compressor/restructure/prepare/createDeclarationIndexer.js
2019-09-13 11:27:52 +07:00

33 lines
726 B
JavaScript
Executable File

var translate = require('../../../utils/translate.js');
function Index() {
this.seed = 0;
this.map = Object.create(null);
}
Index.prototype.resolve = function(str) {
var index = this.map[str];
if (!index) {
index = ++this.seed;
this.map[str] = index;
}
return index;
};
module.exports = function createDeclarationIndexer() {
var names = new Index();
var values = new Index();
return function markDeclaration(node) {
var property = node.property.name;
var value = translate(node.value);
node.id = names.resolve(property) + (values.resolve(value) << 12);
node.length = property.length + 1 + value.length;
return node;
};
};