You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
42 lines
947 B
JavaScript
42 lines
947 B
JavaScript
var stringifyBody = require('../stringifier/one-time').body;
|
|
var stringifySelectors = require('../stringifier/one-time').selectors;
|
|
|
|
function removeDuplicates(tokens) {
|
|
var matched = {};
|
|
var moreThanOnce = [];
|
|
var id, token;
|
|
var body, bodies;
|
|
|
|
for (var i = 0, l = tokens.length; i < l; i++) {
|
|
token = tokens[i];
|
|
if (token[0] != 'selector')
|
|
continue;
|
|
|
|
id = stringifySelectors(token[1]);
|
|
|
|
if (matched[id] && matched[id].length == 1)
|
|
moreThanOnce.push(id);
|
|
else
|
|
matched[id] = matched[id] || [];
|
|
|
|
matched[id].push(i);
|
|
}
|
|
|
|
for (i = 0, l = moreThanOnce.length; i < l; i++) {
|
|
id = moreThanOnce[i];
|
|
bodies = [];
|
|
|
|
for (var j = matched[id].length - 1; j >= 0; j--) {
|
|
token = tokens[matched[id][j]];
|
|
body = stringifyBody(token[2]);
|
|
|
|
if (bodies.indexOf(body) > -1)
|
|
token[2] = [];
|
|
else
|
|
bodies.push(body);
|
|
}
|
|
}
|
|
}
|
|
|
|
module.exports = removeDuplicates;
|