Revert "Remove unnecessary nullability from parseString."

88e3bb7109
2017-09-16 03:02:35 -07:00 · 2017-09-16 03:02:35 -07:00 · f6e326e0f1
parent 14ac9c67f4
commit f6e326e0f1
1 changed files with 1 additions and 1 deletions
--- a/core/src/main/kotlin/org/nwapw/abacus/Abacus.kt
+++ b/core/src/main/kotlin/org/nwapw/abacus/Abacus.kt
@ -88,7 +88,7 @@ class Abacus(val configuration: Configuration) {
     * @param input the input string to parse
     * @return the resulting tree, null if the tree builder or the produced tree are null.
     */
-    fun parseString(input: String): TreeNode = treeBuilder.fromString(input)
+    fun parseString(input: String): TreeNode? = treeBuilder.fromString(input)
    /**
     * Evaluates the given tree.
     *