Throw compilation exception if there are unmatching loops

Zomis · Dec 10, 2016 · c3f90c8 · c3f90c8
1 parent 2223b0c
commit c3f90c8
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/main/groovy/net/zomis/brainf/model/ast/tree/Parser.java b/src/main/groovy/net/zomis/brainf/model/ast/tree/Parser.java
@@ -1,5 +1,6 @@
 package net.zomis.brainf.model.ast.tree;
 
+import net.zomis.brainf.BrainfuckCompilationException;
 import net.zomis.brainf.model.ast.BFToken;
 import net.zomis.brainf.model.ast.CommentToken;
 import net.zomis.brainf.model.ast.GroovyToken;
@@ -69,6 +70,11 @@ public SyntaxTree parse(List<Token> tokens) {
             inner.syntax.add(syntax);
         }
 
+        if (depth.size() > 1) {
+            int tooManyStartedLoops = depth.size() - 1;
+            throw new BrainfuckCompilationException("There are " + tooManyStartedLoops + " too many started loops.");
+        }
+
         return depth.pop();
     }