Data commit

Task/Tokenize-a-string-with-escaping/Elena/tokenize-a-string-with-escaping.elena

@@ -0,0 +1,46 @@
+import extensions;
+import extensions'routines;
+import system'collections;
+import system'routines;
+import system'text;
+
+extension op : String
+{
+    tokenize(separator,escape)
+    {
+        auto buffer := new TextBuilder();
+        auto list := new ArrayList();
+
+        bool escaping := false;
+        self.forEach:(ch)
+        {
+            if (escaping)
+            {
+                buffer.write:ch;
+                escaping := false
+            }
+            else if (ch == escape)
+            {
+                escaping := true
+            }
+            else if (ch == separator)
+            {
+                list.append(buffer.Value);
+                buffer.clear()
+            }
+            else
+            {
+                buffer.write:ch
+            }
+        };
+
+        ^ list
+    }
+}
+
+const string testcase = "one^|uno||three^^^^|four^^^|^cuatro|";
+
+public program()
+{
+    testcase.tokenize("|", "^").forEach:printingLn
+}