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1 using Implab;
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2 using System;
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3 using System.Collections.Generic;
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4 using System.Linq;
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5 using System.Text;
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6 using System.Threading.Tasks;
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7
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8 namespace Implab.Parsing {
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9 public class CatToken : BinaryToken {
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10 public CatToken(Token left, Token right)
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11 : base(left, right) {
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12 }
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13
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14 public override void Accept(IVisitor visitor) {
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15 Safe.ArgumentNotNull(visitor, "visitor");
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16 visitor.Visit(this);
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17 }
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18
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19 public override string ToString() {
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20 return String.Format("{0}{1}", FormatToken(Left), FormatToken(Right));
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21 }
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22
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23 string FormatToken(Token token) {
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24 return String.Format(token is AltToken ? "({0})" : "{0}", token);
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25 }
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26 }
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27 }
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