1 files changed, 50 insertions, 0 deletions
diff --git a/Typecheck.java b/Typecheck.java
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--- /dev/null
+++ b/Typecheck.java
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+// Helper for HW2/CS453.
+import java.io.*;
+import visitor.*;
+import syntaxtree.*;
+import java.util.*;
+// Files are stored in the minijava directory/package.
+import minijava.*;
+
+public class Typecheck {
+    public static void main(String[] args) {
+        Node root = null;
+        try {
+            root = new MiniJavaParser(System.in).Goal();
+
+            // Pretty-print the tree. PPrinter inherits from
+            // GJDepthFirst<R,A>. R=Void, A=String.
+            // PPrinter<Void,String> pp = new PPrinter<Void,String>();
+            // root.accept(pp, "");
+
+            // // Build the symbol table. Top-down visitor, inherits from
+            // // GJDepthFirst<R,A>. R=Void, A=Integer.
+            // SymTableVis<Void, Integer> pv =
+            //     new SymTableVis<Void,Integer>();
+            // root.accept(pv, 0);
+            // HashMap<String, String> symt = pv.symt;
+
+            // // Do type checking. Bottom-up visitor, also inherits from
+            // // GJDepthFirst. Visit functions return MyTpe (=R), and
+            // // take a symbol table (HashMap<String,String>) as
+            // // argument (=A). You may implement things differently of
+            // // course!
+            // TypeCheckSimp ts = new TypeCheckSimp();
+            // MyType res = root.accept(ts, symt);
+
+            // // Ugly code not to be inspired from: "my" way of storing
+            // // type info / typecheck property: if some of my internal
+            // // structure is empty, then things don't typecheck for
+            // // me. This is specific to my own implementation.
+            // if (res != null && res.type_array.size() > 0)
+            //     System.out.println("Program type checked successfully");
+            // else
+            //     System.out.println("Type error");
+			System.out.println("Type error");
+        }
+        catch (ParseException e) {
+            System.out.println(e.toString());
+            System.exit(1);
+        }
+    }
+}