fixed bug in dynamic val/var compilation

lynglib/src/commonMain/kotlin/net/sergeych/lyng/Compiler.kt

@@ -1182,10 +1182,10 @@ class Compiler(
                 if (!record.visibility.isPublic) continue
                 if (nameObjClass.containsKey(name)) continue
                 val resolved = when (val raw = record.value) {
-                    is FrameSlotRef -> raw.read()
-                    is RecordSlotRef -> raw.read()
+                    is FrameSlotRef -> raw.peekValue()
+                    is RecordSlotRef -> raw.peekValue()
                     else -> raw
-                }
+                } ?: continue
                 when (resolved) {
                     is ObjClass -> nameObjClass[name] = resolved
                     is ObjInstance -> nameObjClass[name] = resolved.objClass

lynglib/src/commonMain/kotlin/net/sergeych/lyng/FrameAccess.kt

@@ -60,6 +60,17 @@ class FrameSlotRef(
         return this.frame === frame && this.slot == slot
     }
 
+    internal fun peekValue(): Obj? {
+        val bytecodeFrame = frame as? net.sergeych.lyng.bytecode.BytecodeFrame ?: return read()
+        val raw = bytecodeFrame.getRawObj(slot) ?: return null
+        if (raw is FrameSlotRef && raw.refersTo(bytecodeFrame, slot)) return null
+        return when (raw) {
+            is FrameSlotRef -> raw.peekValue()
+            is RecordSlotRef -> raw.peekValue()
+            else -> raw
+        }
+    }
+
     fun write(value: Obj) {
         when (value) {
             is ObjInt -> frame.setInt(slot, value.value)
@@ -87,6 +98,15 @@ class RecordSlotRef(
         return if (direct is FrameSlotRef) direct.read() else direct
     }
 
+    internal fun peekValue(): Obj? {
+        val direct = record.value
+        return when (direct) {
+            is FrameSlotRef -> direct.peekValue()
+            is RecordSlotRef -> direct.peekValue()
+            else -> direct
+        }
+    }
+
     fun write(value: Obj) {
         record.value = value
     }