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