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109
node_modules/clean-css/lib/optimizer/level-2/is-mergeable.js
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vendored
109
node_modules/clean-css/lib/optimizer/level-2/is-mergeable.js
generated
vendored
@ -11,7 +11,7 @@ var PSEUDO_CLASSES_WITH_ARGUMENTS = [
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':nth-child',
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':nth-last-child',
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':nth-last-of-type',
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':nth-of-type'
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':nth-of-type',
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];
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var RELATION_PATTERN = /[>\+~]/;
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var UNMIXABLE_PSEUDO_CLASSES = [
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@ -19,22 +19,27 @@ var UNMIXABLE_PSEUDO_CLASSES = [
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':before',
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':first-letter',
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':first-line',
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':lang'
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':lang',
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];
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var UNMIXABLE_PSEUDO_ELEMENTS = [
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'::after',
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'::before',
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'::first-letter',
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'::first-line'
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'::first-line',
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];
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var Level = {
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DOUBLE_QUOTE: 'double-quote',
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SINGLE_QUOTE: 'single-quote',
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ROOT: 'root'
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ROOT: 'root',
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};
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function isMergeable(selector, mergeablePseudoClasses, mergeablePseudoElements, multiplePseudoMerging) {
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function isMergeable(
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selector,
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mergeablePseudoClasses,
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mergeablePseudoElements,
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multiplePseudoMerging
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) {
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var singleSelectors = split(selector, Marker.COMMA);
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var singleSelector;
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var i, l;
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@ -42,9 +47,18 @@ function isMergeable(selector, mergeablePseudoClasses, mergeablePseudoElements,
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for (i = 0, l = singleSelectors.length; i < l; i++) {
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singleSelector = singleSelectors[i];
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if (singleSelector.length === 0 ||
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isDeepSelector(singleSelector) ||
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(singleSelector.indexOf(Marker.COLON) > -1 && !areMergeable(singleSelector, extractPseudoFrom(singleSelector), mergeablePseudoClasses, mergeablePseudoElements, multiplePseudoMerging))) {
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if (
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singleSelector.length === 0 ||
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isDeepSelector(singleSelector) ||
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(singleSelector.indexOf(Marker.COLON) > -1 &&
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!areMergeable(
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singleSelector,
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extractPseudoFrom(singleSelector),
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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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return false;
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}
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}
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@ -81,13 +95,19 @@ function extractPseudoFrom(selector) {
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} else if (character == Marker.DOUBLE_QUOTE && level == Level.ROOT) {
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buffer.push(character);
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level = Level.DOUBLE_QUOTE;
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} else if (character == Marker.DOUBLE_QUOTE && level == Level.DOUBLE_QUOTE) {
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} else if (
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character == Marker.DOUBLE_QUOTE &&
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level == Level.DOUBLE_QUOTE
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) {
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buffer.push(character);
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level = Level.ROOT;
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} else if (character == Marker.SINGLE_QUOTE && level == Level.ROOT) {
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buffer.push(character);
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level = Level.SINGLE_QUOTE;
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} else if (character == Marker.SINGLE_QUOTE && level == Level.SINGLE_QUOTE) {
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} else if (
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character == Marker.SINGLE_QUOTE &&
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level == Level.SINGLE_QUOTE
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) {
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buffer.push(character);
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level = Level.ROOT;
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} else if (isQuoted) {
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@ -95,7 +115,11 @@ function extractPseudoFrom(selector) {
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} else if (character == Marker.OPEN_ROUND_BRACKET) {
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buffer.push(character);
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roundBracketLevel++;
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} else if (character == Marker.CLOSE_ROUND_BRACKET && roundBracketLevel == 1 && isPseudo) {
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} else if (
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character == Marker.CLOSE_ROUND_BRACKET &&
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roundBracketLevel == 1 &&
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isPseudo
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) {
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buffer.push(character);
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list.push(buffer.join(''));
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roundBracketLevel--;
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@ -104,15 +128,28 @@ function extractPseudoFrom(selector) {
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} else if (character == Marker.CLOSE_ROUND_BRACKET) {
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buffer.push(character);
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roundBracketLevel--;
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} else if (character == Marker.COLON && roundBracketLevel === 0 && isPseudo && !wasColon) {
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} else if (
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character == Marker.COLON &&
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roundBracketLevel === 0 &&
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isPseudo &&
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!wasColon
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) {
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list.push(buffer.join(''));
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buffer = [];
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buffer.push(character);
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} else if (character == Marker.COLON && roundBracketLevel === 0 && !wasColon) {
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} else if (
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character == Marker.COLON &&
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roundBracketLevel === 0 &&
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!wasColon
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) {
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buffer = [];
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buffer.push(character);
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isPseudo = true;
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} else if (character == Marker.SPACE && roundBracketLevel === 0 && isPseudo) {
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} else if (
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character == Marker.SPACE &&
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roundBracketLevel === 0 &&
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isPseudo
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) {
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list.push(buffer.join(''));
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buffer = [];
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isPseudo = false;
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@ -135,11 +172,19 @@ function extractPseudoFrom(selector) {
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return list;
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}
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function areMergeable(selector, matches, mergeablePseudoClasses, mergeablePseudoElements, multiplePseudoMerging) {
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return areAllowed(matches, mergeablePseudoClasses, mergeablePseudoElements) &&
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function areMergeable(
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selector,
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matches,
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mergeablePseudoClasses,
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mergeablePseudoElements,
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multiplePseudoMerging
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) {
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return (
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areAllowed(matches, mergeablePseudoClasses, mergeablePseudoElements) &&
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needArguments(matches) &&
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(matches.length < 2 || !someIncorrectlyChained(selector, matches)) &&
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(matches.length < 2 || multiplePseudoMerging && allMixable(matches));
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(matches.length < 2 || (multiplePseudoMerging && allMixable(matches)))
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);
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}
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function areAllowed(matches, mergeablePseudoClasses, mergeablePseudoElements) {
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@ -149,11 +194,15 @@ function areAllowed(matches, mergeablePseudoClasses, mergeablePseudoElements) {
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for (i = 0, l = matches.length; i < l; i++) {
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match = matches[i];
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name = match.indexOf(Marker.OPEN_ROUND_BRACKET) > -1 ?
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match.substring(0, match.indexOf(Marker.OPEN_ROUND_BRACKET)) :
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match;
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name =
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match.indexOf(Marker.OPEN_ROUND_BRACKET) > -1 ?
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match.substring(0, match.indexOf(Marker.OPEN_ROUND_BRACKET))
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: match;
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if (mergeablePseudoClasses.indexOf(name) === -1 && mergeablePseudoElements.indexOf(name) === -1) {
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if (
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mergeablePseudoClasses.indexOf(name) === -1 &&
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mergeablePseudoElements.indexOf(name) === -1
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) {
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return false;
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}
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}
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@ -173,9 +222,7 @@ function needArguments(matches) {
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bracketOpensAt = match.indexOf(Marker.OPEN_ROUND_BRACKET);
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hasArguments = bracketOpensAt > -1;
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name = hasArguments ?
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match.substring(0, bracketOpensAt) :
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match;
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name = hasArguments ? match.substring(0, bracketOpensAt) : match;
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if (hasArguments && PSEUDO_CLASSES_WITH_ARGUMENTS.indexOf(name) == -1) {
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return false;
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@ -214,12 +261,14 @@ function someIncorrectlyChained(selector, matches) {
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areChained = matchAt + match.length == nextMatchAt;
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if (areChained) {
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name = match.indexOf(Marker.OPEN_ROUND_BRACKET) > -1 ?
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match.substring(0, match.indexOf(Marker.OPEN_ROUND_BRACKET)) :
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match;
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nextName = nextMatch.indexOf(Marker.OPEN_ROUND_BRACKET) > -1 ?
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nextMatch.substring(0, nextMatch.indexOf(Marker.OPEN_ROUND_BRACKET)) :
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nextMatch;
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name =
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match.indexOf(Marker.OPEN_ROUND_BRACKET) > -1 ?
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match.substring(0, match.indexOf(Marker.OPEN_ROUND_BRACKET))
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: match;
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nextName =
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nextMatch.indexOf(Marker.OPEN_ROUND_BRACKET) > -1 ?
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nextMatch.substring(0, nextMatch.indexOf(Marker.OPEN_ROUND_BRACKET))
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: nextMatch;
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if (name != NOT_PSEUDO || nextName != NOT_PSEUDO) {
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return true;
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