81 lines
2.3 KiB
JavaScript
81 lines
2.3 KiB
JavaScript
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 =
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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 =
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options.level[OptimizationLevel.One].selectorsSortingMethod;
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var mergeablePseudoClasses =
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options.compatibility.selectors.mergeablePseudoClasses;
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var mergeablePseudoElements =
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options.compatibility.selectors.mergeablePseudoElements;
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var mergeLimit = options.compatibility.selectors.mergeLimit;
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var multiplePseudoMerging =
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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 (
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lastToken[0] == Token.RULE &&
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serializeRules(token[1]) == serializeRules(lastToken[1])
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) {
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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 (
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lastToken[0] == Token.RULE &&
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serializeBody(token[2]) == serializeBody(lastToken[2]) &&
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isMergeable(
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serializeRules(token[1]),
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mergeablePseudoClasses,
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mergeablePseudoElements,
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multiplePseudoMerging
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) &&
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isMergeable(
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serializeRules(lastToken[1]),
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mergeablePseudoClasses,
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mergeablePseudoElements,
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multiplePseudoMerging
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) &&
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lastToken[1].length < mergeLimit
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) {
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lastToken[1] = tidyRules(
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lastToken[1].concat(token[1]),
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false,
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adjacentSpace,
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false,
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context.warnings
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);
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lastToken[1] =
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lastToken.length > 1 ?
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sortSelectors(lastToken[1], selectorsSortingMethod)
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: 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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