| var isMergeable = require('./is-mergeable'); |
| |
| var optimizeProperties = require('./properties/optimize'); |
| |
| var sortSelectors = require('../level-1/sort-selectors'); |
| var tidyRules = require('../level-1/tidy-rules'); |
| |
| var OptimizationLevel = require('../../options/optimization-level').OptimizationLevel; |
| |
| var serializeBody = require('../../writer/one-time').body; |
| var serializeRules = require('../../writer/one-time').rules; |
| |
| var Token = require('../../tokenizer/token'); |
| |
| function mergeAdjacent(tokens, context) { |
| var lastToken = [null, [], []]; |
| var options = context.options; |
| var adjacentSpace = options.compatibility.selectors.adjacentSpace; |
| var selectorsSortingMethod = options.level[OptimizationLevel.One].selectorsSortingMethod; |
| var mergeablePseudoClasses = options.compatibility.selectors.mergeablePseudoClasses; |
| var mergeablePseudoElements = options.compatibility.selectors.mergeablePseudoElements; |
| var mergeLimit = options.compatibility.selectors.mergeLimit; |
| var multiplePseudoMerging = options.compatibility.selectors.multiplePseudoMerging; |
| |
| for (var i = 0, l = tokens.length; i < l; i++) { |
| var token = tokens[i]; |
| |
| if (token[0] != Token.RULE) { |
| lastToken = [null, [], []]; |
| continue; |
| } |
| |
| if (lastToken[0] == Token.RULE && serializeRules(token[1]) == serializeRules(lastToken[1])) { |
| Array.prototype.push.apply(lastToken[2], token[2]); |
| optimizeProperties(lastToken[2], true, true, context); |
| token[2] = []; |
| } else if (lastToken[0] == Token.RULE && serializeBody(token[2]) == serializeBody(lastToken[2]) && |
| isMergeable(serializeRules(token[1]), mergeablePseudoClasses, mergeablePseudoElements, multiplePseudoMerging) && |
| isMergeable(serializeRules(lastToken[1]), mergeablePseudoClasses, mergeablePseudoElements, multiplePseudoMerging) && |
| lastToken[1].length < mergeLimit) { |
| lastToken[1] = tidyRules(lastToken[1].concat(token[1]), false, adjacentSpace, false, context.warnings); |
| lastToken[1] = lastToken.length > 1 ? sortSelectors(lastToken[1], selectorsSortingMethod) : lastToken[1]; |
| token[2] = []; |
| } else { |
| lastToken = token; |
| } |
| } |
| } |
| |
| module.exports = mergeAdjacent; |