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1 using UnityEngine;
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2 using System.Collections;
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3 using System.Collections.Generic;
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4 public class DefaultTreeEditor : TreeEditor {
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5 private Traverser traverser;
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6 public DefaultTreeEditor(Traverser traverser){
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7 this.traverser = traverser;
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8 }
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9
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10 public Either<Error,LoggingNode> edit(TreeNode root,NodePath path, NodeEditor editor){
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11 DefaultEvaluator e = new DefaultEvaluator (path);
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12 Either<Error, Traversal> either = traverser.traverse (root, e);
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13
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14 if (either.isA ()) {
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15 return DefaultEither<Error, LoggingNode>.newA (either.a ());
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16 }
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17 Traversal t = either.b ();
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18 return clone (t, editor);
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19 }
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20
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21 private Either<Error, LoggingNode> clone(Traversal t, NodeEditor editor){
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22 List<Direction<TreeNode>> path = new List<Direction<TreeNode>> ();
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23
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24 foreach (Direction<TreeNode> direction in t) {
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25 path = path.addLast (direction);
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26 }
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27
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28 Direction<TreeNode> targetDirection = path.headList ();
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29 TreeNode target = targetDirection.getTarget ();
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30 Either<Error, LoggingNode> either = editor.edit (target);
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31 if (either.isA ()) {
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32 return DefaultEither<Error, LoggingNode>.newA (either.a ());
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33 }
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34
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35 LoggingNode newWrap = either.b ();
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36
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37 int pos = targetDirection.getPosition ();
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38 TreeNode child = newWrap.getWrap ();
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39
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40 foreach (Direction<TreeNode> parentDirection in path.deleteHead()) {
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41 TreeNodeChildren chs = parentDirection.getTarget ().getChildren ();
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42
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43 Either<Error, TreeNode> ret = chs.replaceNode (pos, child);
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44 if (ret.isA ()) {
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45 return DefaultEither<Error, LoggingNode>.newA (ret.a ());
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46 }
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47
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48 child = ret.b ();
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49 pos = parentDirection.getPosition ();
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50 }
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51
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52 TreeNode newRoot = child;
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53 LoggingNode logNode = editor.wrap (newRoot, newWrap.getOperationLog ());
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54 return DefaultEither<Error, LoggingNode>.newB (logNode);
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55
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56 }
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57
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58 }
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