forked from zhurui/management
36 lines
1.3 KiB
JavaScript
36 lines
1.3 KiB
JavaScript
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var optimizeProperties = require('../properties/optimizer');
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var stringifyBody = require('../stringifier/one-time').body;
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var stringifySelectors = require('../stringifier/one-time').selectors;
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var cleanUpSelectors = require('./clean-up').selectors;
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var isSpecial = require('./is-special');
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function mergeAdjacent(tokens, options, context) {
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var lastToken = [null, [], []];
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var adjacentSpace = options.compatibility.selectors.adjacentSpace;
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for (var i = 0, l = tokens.length; i < l; i++) {
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var token = tokens[i];
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if (token[0] != 'selector') {
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lastToken = [null, [], []];
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continue;
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}
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if (lastToken[0] == 'selector' && stringifySelectors(token[1]) == stringifySelectors(lastToken[1])) {
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var joinAt = [lastToken[2].length];
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Array.prototype.push.apply(lastToken[2], token[2]);
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optimizeProperties(token[1], lastToken[2], joinAt, true, options, context);
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token[2] = [];
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} else if (lastToken[0] == 'selector' && stringifyBody(token[2]) == stringifyBody(lastToken[2]) &&
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!isSpecial(options, stringifySelectors(token[1])) && !isSpecial(options, stringifySelectors(lastToken[1]))) {
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lastToken[1] = cleanUpSelectors(lastToken[1].concat(token[1]), false, adjacentSpace);
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token[2] = [];
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} else {
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lastToken = token;
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}
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}
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}
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module.exports = mergeAdjacent;
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