1 files changed, 36 insertions, 0 deletions
diff --git a/src/main/java/com/seaofnodes/simple/node/PtrToIntNode.java b/src/main/java/com/seaofnodes/simple/node/PtrToIntNode.java
new file mode 100644
index 00000000..d3d38060
--- /dev/null
+++ b/src/main/java/com/seaofnodes/simple/node/PtrToIntNode.java
@@ -0,0 +1,36 @@
+package com.seaofnodes.simple.node;
+
+
+import com.seaofnodes.simple.Parser;
+import com.seaofnodes.simple.type.Type;
+import com.seaofnodes.simple.type.TypeInteger;
+import com.seaofnodes.simple.type.TypeMemPtr;
+
+
+/**
+ * Reinterpret a non-null managed pointer as its raw integer address.
+ *
+ * This node changes representation families but emits no code.  No
+ * control-dependent proof can turn a pointer into an integer; array-to-C-pointer
+ * conversion adds the array body offset separately.
+ */
+public class PtrToIntNode extends Node {
+    public PtrToIntNode(Node ptr) { super(null,ptr); }
+    public PtrToIntNode(PtrToIntNode ptr) { super(ptr); }
+
+    @Override public Tag serialTag() { return Tag.PtrToInt; }
+    @Override protected String format() { return "(i64*)%1"; }
+
+    @Override public Type compute() {
+        return in(1)._type.isHigh() ? TypeInteger.TOP : TypeInteger.BOT;
+    }
+
+    @Override public Node idealize() { return null; }
+
+    @Override public Parser.ParseException err() {
+        Type t = in(1)._type;
+        if( t instanceof TypeMemPtr ptr )
+            return ptr.notNull() ? null : Parser.error("Cannot convert a nullable pointer to an integer",null);
+        return Parser.error("Cannot convert "+t.str()+" to an integer pointer",null);
+    }
+}