redo

src/main/java/precomp/Mask.java

@@ -0,0 +1,17 @@
+package precomp;
+
+public sealed interface Mask
+        permits Const9x8.Cell, Const3x4.Cell, Mask.Masker {
+   
+   record Masker(long lo, long hi, int index, int r, int c, byte d)
+           implements precomp.Mask { }
+   default Mask or(Mask o)  { return new Masker(o.lo() | lo(), o.hi() | hi(), 0, 0, 0, (byte) 0); }
+   default Mask and(Mask o) { return new Masker(o.lo() & lo(), o.hi() & hi(), 0, 0, 0, (byte) 0); }
+   
+   long hi();
+   long lo();
+   int index();
+   int r();
+   int c();
+   byte d();
+}