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Implement toString in child nodes of TreeNode.

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This commit is contained in:
Danila Fedorin 2017-07-26 17:26:55 -07:00
parent 51ca0a9ae2
commit c88a0cbdc5
2 changed files with 20 additions and 0 deletions
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5
src/org/nwapw/abacus/tree/NumberNode.java
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@ -49,4 +49,9 @@ public class NumberNode extends TreeNode {
public <T> T reduce(Reducer<T> reducer) { public <T> T reduce(Reducer<T> reducer) {
return reducer.reduceNode(this); return reducer.reduceNode(this);
} }
@Override
public String toString() {
return number != null ? number.toString() : "null";
}
} }

15
src/org/nwapw/abacus/tree/OpNode.java
View File

@ -88,4 +88,19 @@ public class OpNode extends TreeNode {
T rightReduce = right.reduce(reducer); T rightReduce = right.reduce(reducer);
return reducer.reduceNode(this, leftReduce, rightReduce); return reducer.reduceNode(this, leftReduce, rightReduce);
} }
@Override
public String toString() {
String leftString = left != null ? left.toString() : "null";
String rightString = right != null ? right.toString() : "null";
if(right != null && right instanceof OpNode){
if(TreeNode.precedenceMap.get(((OpNode) right).getOperation()) >
TreeNode.precedenceMap.get(operation)) {
rightString = "(" + rightString + ")";
}
}
return leftString + operation + rightString;
}
} }