Add code

ScriptConverter/Ast/Statements/Statement.cs

@@ -0,0 +1,25 @@
+using System;
+using ScriptConverter.Parser;
+
+namespace ScriptConverter.Ast.Statements
+{
+    abstract class Statement
+    {
+        public readonly ScriptToken Start;
+        public readonly ScriptToken End;
+        public Statement Parent { get; protected set; }
+
+        protected Statement(ScriptToken start, ScriptToken end = null)
+        {
+            if (start == null)
+                throw new ArgumentNullException("start");
+
+            Start = start;
+            End = end ?? start;
+        }
+
+        public abstract TStmt Accept<TDoc, TDecl, TStmt, TExpr>(IAstVisitor<TDoc, TDecl, TStmt, TExpr> visitor);
+
+        public abstract void SetParent(Statement parent);
+    }
+}