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160
node_modules/clean-css/lib/optimizer/level-2/restructure.js
generated
vendored
160
node_modules/clean-css/lib/optimizer/level-2/restructure.js
generated
vendored
@ -23,10 +23,13 @@ function cloneAndMergeSelectors(propertyA, propertyB) {
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function restructure(tokens, context) {
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var options = context.options;
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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 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 = options.compatibility.selectors.multiplePseudoMerging;
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var multiplePseudoMerging =
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options.compatibility.selectors.multiplePseudoMerging;
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var specificityCache = context.cache.specificity;
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var movableTokens = {};
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var movedProperties = [];
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@ -40,7 +43,10 @@ function restructure(tokens, context) {
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var fit = allFits[i][0];
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var id = addToCache(movedProperty, fit);
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if (multiPropertyMoveCache[id].length > 1 && processMultiPropertyMove(position, multiPropertyMoveCache[id])) {
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if (
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multiPropertyMoveCache[id].length > 1 &&
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processMultiPropertyMove(position, multiPropertyMoveCache[id])
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) {
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removeAllMatchingFromCache(id);
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break;
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}
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@ -87,18 +93,26 @@ function restructure(tokens, context) {
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var mergeableTokens = [];
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for (var i = sourceTokens.length - 1; i >= 0; i--) {
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if (!isMergeable(serializeRules(sourceTokens[i][1]), mergeablePseudoClasses, mergeablePseudoElements, multiplePseudoMerging)) {
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if (
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!isMergeable(
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serializeRules(sourceTokens[i][1]),
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mergeablePseudoClasses,
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mergeablePseudoElements,
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multiplePseudoMerging
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)
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) {
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continue;
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}
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mergeableTokens.unshift(sourceTokens[i]);
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if (sourceTokens[i][2].length > 0 && uniqueTokensWithBody.indexOf(sourceTokens[i]) == -1)
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if (
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sourceTokens[i][2].length > 0 &&
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uniqueTokensWithBody.indexOf(sourceTokens[i]) == -1
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)
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uniqueTokensWithBody.push(sourceTokens[i]);
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}
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return uniqueTokensWithBody.length > 1 ?
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mergeableTokens :
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[];
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return uniqueTokensWithBody.length > 1 ? mergeableTokens : [];
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}
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function shortenIfPossible(position, movedProperty) {
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@ -110,15 +124,14 @@ function restructure(tokens, context) {
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var qualifiedTokens = [];
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var mergeableTokens = tokensToMerge(movableTokens[key]);
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if (mergeableTokens.length < 2)
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return;
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if (mergeableTokens.length < 2) return;
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var allFits = findAllFits(mergeableTokens, valueSize, 1);
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var bestFit = allFits[0];
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if (bestFit[1] > 0)
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return sendToMultiPropertyMoveCache(position, movedProperty, allFits);
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for (var i = bestFit[0].length - 1; i >=0; i--) {
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for (var i = bestFit[0].length - 1; i >= 0; i--) {
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allSelectors = bestFit[0][i][1].concat(allSelectors);
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qualifiedTokens.unshift(bestFit[0][i]);
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}
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@ -128,21 +141,42 @@ function restructure(tokens, context) {
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}
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function fitSorter(fit1, fit2) {
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return fit1[1] > fit2[1] ? 1 : (fit1[1] == fit2[1] ? 0 : -1);
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return (
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fit1[1] > fit2[1] ? 1
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: fit1[1] == fit2[1] ? 0
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: -1
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);
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}
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function findAllFits(mergeableTokens, propertySize, propertiesCount) {
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var combinations = allCombinations(mergeableTokens, propertySize, propertiesCount, maxCombinationsLevel - 1);
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var combinations = allCombinations(
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mergeableTokens,
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propertySize,
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propertiesCount,
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maxCombinationsLevel - 1
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);
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return combinations.sort(fitSorter);
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}
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function allCombinations(tokensVariant, propertySize, propertiesCount, level) {
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var differenceVariants = [[tokensVariant, sizeDifference(tokensVariant, propertySize, propertiesCount)]];
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function allCombinations(
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tokensVariant,
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propertySize,
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propertiesCount,
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level
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) {
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var differenceVariants = [
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[
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tokensVariant,
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sizeDifference(tokensVariant, propertySize, propertiesCount),
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],
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];
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if (tokensVariant.length > 2 && level > 0) {
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for (var i = tokensVariant.length - 1; i >= 0; i--) {
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var subVariant = Array.prototype.slice.call(tokensVariant, 0);
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subVariant.splice(i, 1);
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differenceVariants = differenceVariants.concat(allCombinations(subVariant, propertySize, propertiesCount, level - 1));
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differenceVariants = differenceVariants.concat(
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allCombinations(subVariant, propertySize, propertiesCount, level - 1)
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);
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}
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}
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@ -152,12 +186,20 @@ function restructure(tokens, context) {
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function sizeDifference(tokensVariant, propertySize, propertiesCount) {
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var allSelectorsSize = 0;
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for (var i = tokensVariant.length - 1; i >= 0; i--) {
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allSelectorsSize += tokensVariant[i][2].length > propertiesCount ? serializeRules(tokensVariant[i][1]).length : -1;
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allSelectorsSize +=
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tokensVariant[i][2].length > propertiesCount ?
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serializeRules(tokensVariant[i][1]).length
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: -1;
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}
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return allSelectorsSize - (tokensVariant.length - 1) * propertySize + 1;
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}
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function dropAsNewTokenAt(position, properties, allSelectors, mergeableTokens) {
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function dropAsNewTokenAt(
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position,
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properties,
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allSelectors,
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mergeableTokens
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) {
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var i, j, k, m;
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var allProperties = [];
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@ -173,7 +215,10 @@ function restructure(tokens, context) {
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var mergeablePropertyName = mergeableProperty[1][1];
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var propertyName = property[0];
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var propertyBody = property[4];
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if (mergeablePropertyName == propertyName && serializeBody([mergeableProperty]) == propertyBody) {
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if (
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mergeablePropertyName == propertyName &&
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serializeBody([mergeableProperty]) == propertyBody
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) {
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mergeableToken[2].splice(j, 1);
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break;
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}
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@ -206,28 +251,27 @@ function restructure(tokens, context) {
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var j, k;
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var mergeableTokens = tokensToMerge(movableTokens[key]);
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if (mergeableTokens.length < 2)
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return;
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if (mergeableTokens.length < 2) return;
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movableLoop:
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for (var value in movableTokens) {
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movableLoop: for (var value in movableTokens) {
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var tokensList = movableTokens[value];
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for (j = mergeableTokens.length - 1; j >= 0; j--) {
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if (tokensList.indexOf(mergeableTokens[j]) == -1)
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continue movableLoop;
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if (tokensList.indexOf(mergeableTokens[j]) == -1) continue movableLoop;
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}
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candidates.push(value);
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}
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if (candidates.length < 2)
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return false;
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if (candidates.length < 2) return false;
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for (j = candidates.length - 1; j >= 0; j--) {
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for (k = movedProperties.length - 1; k >= 0; k--) {
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if (movedProperties[k][4] == candidates[j]) {
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propertiesAndMergableTokens.unshift([movedProperties[k], mergeableTokens]);
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propertiesAndMergableTokens.unshift([
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movedProperties[k],
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mergeableTokens,
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]);
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break;
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}
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}
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@ -251,8 +295,7 @@ function restructure(tokens, context) {
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var mergeableTokens = propertiesAndMergableTokens[0][1];
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var bestFit = findAllFits(mergeableTokens, valueSize, properties.length)[0];
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if (bestFit[1] > 0)
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return false;
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if (bestFit[1] > 0) return false;
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var allSelectors = [];
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var qualifiedTokens = [];
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@ -277,11 +320,14 @@ function restructure(tokens, context) {
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return true;
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}
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function boundToAnotherPropertyInCurrrentToken(property, movedProperty, token) {
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function boundToAnotherPropertyInCurrrentToken(
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property,
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movedProperty,
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token
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) {
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var propertyName = property[0];
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var movedPropertyName = movedProperty[0];
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if (propertyName != movedPropertyName)
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return false;
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if (propertyName != movedPropertyName) return false;
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var key = movedProperty[4];
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var toMove = movableTokens[key];
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@ -325,8 +371,17 @@ function restructure(tokens, context) {
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for (k = 0; k < movedCount; k++) {
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var movedProperty = movedProperties[k];
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if (movedToBeDropped.indexOf(k) == -1 && (!canReorderSingle(property, movedProperty, specificityCache) && !boundToAnotherPropertyInCurrrentToken(property, movedProperty, token) ||
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movableTokens[movedProperty[4]] && movableTokens[movedProperty[4]].length === mergeLimit)) {
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if (
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movedToBeDropped.indexOf(k) == -1 &&
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((!canReorderSingle(property, movedProperty, specificityCache) &&
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!boundToAnotherPropertyInCurrrentToken(
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property,
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movedProperty,
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token
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)) ||
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(movableTokens[movedProperty[4]] &&
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movableTokens[movedProperty[4]].length === mergeLimit))
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) {
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dropPropertiesAt(i + 1, movedProperty, token);
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if (movedToBeDropped.indexOf(k) == -1) {
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@ -336,7 +391,8 @@ function restructure(tokens, context) {
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}
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if (!movedSameProperty) {
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movedSameProperty = property[0] == movedProperty[0] && property[1] == movedProperty[1];
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movedSameProperty =
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property[0] == movedProperty[0] && property[1] == movedProperty[1];
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if (movedSameProperty) {
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samePropertyAt = k;
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@ -344,12 +400,15 @@ function restructure(tokens, context) {
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}
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}
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if (!isRule || unmovableInCurrentToken.indexOf(j) > -1)
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continue;
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if (!isRule || unmovableInCurrentToken.indexOf(j) > -1) continue;
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var key = property[4];
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if (movedSameProperty && movedProperties[samePropertyAt][5].length + property[5].length > mergeLimit) {
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if (
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movedSameProperty &&
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movedProperties[samePropertyAt][5].length + property[5].length >
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mergeLimit
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) {
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dropPropertiesAt(i + 1, movedProperties[samePropertyAt]);
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movedProperties.splice(samePropertyAt, 1);
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movableTokens[key] = [token];
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@ -360,7 +419,10 @@ function restructure(tokens, context) {
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}
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if (movedSameProperty) {
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movedProperties[samePropertyAt] = cloneAndMergeSelectors(movedProperties[samePropertyAt], property);
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movedProperties[samePropertyAt] = cloneAndMergeSelectors(
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movedProperties[samePropertyAt],
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property
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);
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} else {
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movedProperties.push(property);
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}
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@ -373,12 +435,20 @@ function restructure(tokens, context) {
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}
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}
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var position = tokens[0] && tokens[0][0] == Token.AT_RULE && tokens[0][1].indexOf('@charset') === 0 ? 1 : 0;
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var position =
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(
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tokens[0] &&
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tokens[0][0] == Token.AT_RULE &&
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tokens[0][1].indexOf('@charset') === 0
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) ?
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1
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: 0;
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for (; position < tokens.length - 1; position++) {
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var isImportRule = tokens[position][0] === Token.AT_RULE && tokens[position][1].indexOf('@import') === 0;
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var isImportRule =
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tokens[position][0] === Token.AT_RULE &&
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tokens[position][1].indexOf('@import') === 0;
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var isComment = tokens[position][0] === Token.COMMENT;
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if (!(isImportRule || isComment))
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break;
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if (!(isImportRule || isComment)) break;
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}
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for (i = 0; i < movedProperties.length; i++) {
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