From c14f3676114df656e5c6c07b49351c74496aaf04 Mon Sep 17 00:00:00 2001
From: bd-912 <bdunahu@colostate.edu>
Date: Wed, 17 Apr 2024 12:22:22 -0600
Subject: Rename Node->NodeCFG to avoid namespace collision

---
 V2VM.java                              | 17 +++++----
 vaporize/library/CFGSimp.java          | 23 +++++++++++--
 vaporize/library/ControlFlowGraph.java | 22 +++++++++---
 vaporize/library/SpillEverywhere.java  | 63 +++++++++++++++++-----------------
 4 files changed, 76 insertions(+), 49 deletions(-)

diff --git a/V2VM.java b/V2VM.java
index 6a0645b..a234db6 100644
--- a/V2VM.java
+++ b/V2VM.java
@@ -27,18 +27,17 @@ public class V2VM {
 
             VaporProgram prog = parseVapor(System.in, System.out);
 
-            ControlFlowGraph cfg = new ControlFlowGraph();
-            CFGSimp<String, Void> cfg_vis = new CFGSimp<String, Void>(cfg);
-
-            for (VFunction f : prog.functions)
-                for (VInstr s : f.body)
-                    s.accept("", cfg_vis);
+            ArrayList<ControlFlowGraph> cfgs = new ArrayList<ControlFlowGraph>();
+            for (VFunction f : prog.functions) {
+                CFGSimp<String, Void> cfg = new CFGSimp<String, Void>(f);
+                cfgs.add(cfg.getCFG());
+            }
 
             SpillEverywhere<String, Void> se = new SpillEverywhere<String, Void>(strProg);
 
-            for (VFunction f : prog.functions)
-                for (VInstr s : f.body)
-                    s.accept("", se);
+            // for (VFunction f : prog.functions)
+            //     for (VInstr s : f.body)
+            //         s.accept("", se);
 
         } catch (IOException e) {
             System.out.println(e.toString());
diff --git a/vaporize/library/CFGSimp.java b/vaporize/library/CFGSimp.java
index 372f926..6ab276a 100644
--- a/vaporize/library/CFGSimp.java
+++ b/vaporize/library/CFGSimp.java
@@ -7,10 +7,26 @@ import java.util.*;
 
 public class CFGSimp<P, R> extends VInstr.VisitorPR<P, R, RuntimeException> {
 
-    ControlFlowGraph cfg;
+    private ControlFlowGraph cfg;
 
-    public CFGSimp(ControlFlowGraph cfg) {
-        this.cfg = cfg;
+    public CFGSimp(VFunction n) {
+        this.cfg = new ControlFlowGraph();
+        CFGNode start = new CFGNode(n.body[0]);
+        this.cfg.setStart(start);
+
+        // nodes
+        for (VInstr s : n.body)
+            this.cfg.addNode(new CFGNode(s));
+
+        // edges
+        for (VInstr s : n.body)
+            s.accept("", this);
+
+        System.out.println(this.cfg.getNodes().toString());
+    }
+
+    public ControlFlowGraph getCFG() {
+        return this.cfg;
     }
 
     public R visit(P p, VMemRead n) throws RuntimeException {
@@ -26,6 +42,7 @@ public class CFGSimp<P, R> extends VInstr.VisitorPR<P, R, RuntimeException> {
     }
 
     public R visit(P p, VBranch n) throws RuntimeException {
+        // two edges
         return null;
     }
 
diff --git a/vaporize/library/ControlFlowGraph.java b/vaporize/library/ControlFlowGraph.java
index f181d36..773c4cd 100644
--- a/vaporize/library/ControlFlowGraph.java
+++ b/vaporize/library/ControlFlowGraph.java
@@ -5,9 +5,9 @@ import java.util.ArrayList;
 
 public class ControlFlowGraph {
 
-    private ArrayList<Node> nodes;
-    private Node start;
-    private Node end;
+    private ArrayList<CFGNode> nodes;
+    private CFGNode start;
+    private CFGNode end;
 
     public ControlFlowGraph() {
         this.nodes = new ArrayList<>();
@@ -15,13 +15,25 @@ public class ControlFlowGraph {
         this.end = null;
     }
 
-    protected void addNode(Node node) {
+    protected void addNode(CFGNode node) {
         this.nodes.add(node);
     }
 
-    protected void addEdge(Node source, Node dest) {
+    protected void addEdge(CFGNode source, CFGNode dest) {
         source.addDest(dest);
         dest.addSource(source);
     }
 
+    protected void setStart(CFGNode start) {
+        this.start = start;
+    }
+
+    /**
+     * The following methods are for testing
+     * only!
+     */
+    protected ArrayList<CFGNode> getNodes() {
+        return this.nodes;
+    }
+
 }
diff --git a/vaporize/library/SpillEverywhere.java b/vaporize/library/SpillEverywhere.java
index aa8368f..5edbbfc 100644
--- a/vaporize/library/SpillEverywhere.java
+++ b/vaporize/library/SpillEverywhere.java
@@ -45,40 +45,39 @@ public class SpillEverywhere<P, R> extends VInstr.VisitorPR<P, R, RuntimeExcepti
                                         n.getClass().getSimpleName(),
                                         this.vapor.get(n.sourcePos.line-1),
                                         n.sourcePos.toString()), true);
-        System.out.println("NEXT: " +
-			   return null;
-			   }
-
-	    public R visit(P p, VGoto n) throws RuntimeException {
-	    PrintFilter.print(String.format("%s (%s:%s)",
-					    n.getClass().getSimpleName(),
-					    this.vapor.get(n.sourcePos.line-1),
-					    n.sourcePos.toString()), true);
-	    return null;
-	}
+	return null;
+    }
 
-	public R visit(P p, VCall n) throws RuntimeException {
-	    PrintFilter.print(String.format("%s (%s:%s)",
-					    n.getClass().getSimpleName(),
-					    this.vapor.get(n.sourcePos.line-1),
-					    n.sourcePos.toString()), true);
-	    return null;
-	}
+    public R visit(P p, VGoto n) throws RuntimeException {
+	PrintFilter.print(String.format("%s (%s:%s)",
+					n.getClass().getSimpleName(),
+					this.vapor.get(n.sourcePos.line-1),
+					n.sourcePos.toString()), true);
+	return null;
+    }
 
-	public R visit(P p, VBuiltIn n) throws RuntimeException {
-	    PrintFilter.print(String.format("%s (%s:%s)",
-					    n.op.name,
-					    this.vapor.get(n.sourcePos.line-1),
-					    n.sourcePos.toString()), true);
-	    return null;
-	}
+    public R visit(P p, VCall n) throws RuntimeException {
+	PrintFilter.print(String.format("%s (%s:%s)",
+					n.getClass().getSimpleName(),
+					this.vapor.get(n.sourcePos.line-1),
+					n.sourcePos.toString()), true);
+	return null;
+    }
 
-	public R visit(P p, VReturn n) throws RuntimeException {
-	    PrintFilter.print(String.format("%s (%s:%s)",
-					    n.getClass().getSimpleName(),
-					    this.vapor.get(n.sourcePos.line-1),
-					    n.sourcePos.toString()), true);
-	    return null;
-	}
+    public R visit(P p, VBuiltIn n) throws RuntimeException {
+	PrintFilter.print(String.format("%s (%s:%s)",
+					n.op.name,
+					this.vapor.get(n.sourcePos.line-1),
+					n.sourcePos.toString()), true);
+	return null;
+    }
 
+    public R visit(P p, VReturn n) throws RuntimeException {
+	PrintFilter.print(String.format("%s (%s:%s)",
+					n.getClass().getSimpleName(),
+					this.vapor.get(n.sourcePos.line-1),
+					n.sourcePos.toString()), true);
+	return null;
     }
+
+}
-- 
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