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Fix mismatched parentheses causing exceptions.
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@ -162,6 +162,7 @@ public class ShuntingYardParser implements Parser<Match<TokenType>>, PluginListe
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@Override
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public TreeNode constructTree(List<Match<TokenType>> tokens) {
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tokens = intoPostfix(new ArrayList<>(tokens));
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if(tokens == null) return null;
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Collections.reverse(tokens);
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return constructRecursive(tokens);
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}
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