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Code Issues Releases Wiki Activity

Correctly handle invalid strings.

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This commit is contained in:
Danila Fedorin 2017-07-26 13:25:12 -07:00
parent 7c4ecdc1db
commit 9ce35aad54
1 changed files with 3 additions and 1 deletions
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4
src/org/nwapw/abacus/tree/TreeNode.java
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@ -129,7 +129,9 @@ public abstract class TreeNode {
* @return the resulting tree.
*/
public static TreeNode fromString(String string){
ArrayList<Match<TokenType>> matches = intoPostfix(string, tokenize(string));
ArrayList<Match<TokenType>> matches = tokenize(string);
if(matches == null) return null;
matches = intoPostfix(string, matches);
if(matches == null) return null;
Collections.reverse(matches);