Add skeleton of CFG visitor

1 files changed, 51 insertions, 0 deletions

diff --git a/V2VM.java b/V2VM.java
new file mode 100644
index 0000000..0f745f0
--- /dev/null
+++ b/V2VM.java
@@ -0,0 +1,51 @@
+import java.io.*;
+import cs132.util.ProblemException;
+import cs132.vapor.parser.VaporParser;
+import cs132.vapor.ast.VaporProgram;
+import cs132.vapor.ast.VBuiltIn.Op;
+
+import java.io.InputStreamReader;
+import java.io.IOException;
+import java.io.PrintStream;
+
+import st.*;
+import misc.*;
+import vaporize.library.*;
+
+public class V2VM {
+
+    public static void main(String[] args) {
+        try {
+            VaporProgram pgrm = parseVapor(System.in, System.out);
+            System.out.println(pgrm);
+
+            ControlFlowGraph vp = new ControlFlowGraph<Void, Void>();
+
+        } catch (IOException e) {
+            System.out.println(e.toString());
+            System.exit(1);
+        }
+    }
+
+    public static VaporProgram parseVapor(InputStream in, PrintStream err) throws IOException {
+        Op[] ops = {
+            Op.Add, Op.Sub, Op.MulS, Op.Eq, Op.Lt, Op.LtS,
+            Op.PrintIntS, Op.HeapAllocZ, Op.Error,
+        };
+        boolean allowLocals = true;
+        String[] registers = null;
+        boolean allowStack = false;
+
+        VaporProgram program;
+        try {
+            program = VaporParser.run(new InputStreamReader(in), 1, 1,
+                                      java.util.Arrays.asList(ops),
+                                      allowLocals, registers, allowStack);
+        } catch (ProblemException ex) {
+            err.println(ex.getMessage());
+            return null;
+        }
+
+        return program;
+    }
+}