introduce bitloops

src/main/java/puzzle/Meta.java

@@ -1,6 +1,7 @@
 package puzzle;
 
 import com.google.gson.Gson;
+import lombok.experimental.UtilityClass;
 import puzzle.SwedishGenerator.Lemma;
 import java.io.IOException;
 import java.nio.ByteBuffer;
@@ -11,8 +12,7 @@ import java.nio.charset.StandardCharsets;
 import java.nio.file.Path;
 import java.nio.file.StandardOpenOption;
 import java.util.Arrays;
-import java.util.Locale;
-
+@UtilityClass
 public class Meta {
    
    static final Gson GSON    = new Gson();
@@ -27,14 +27,14 @@ public class Meta {
    static final Path shardData = dir.resolve("shard0.data");
    static final Path shardMap  = dir.resolve("shard0.map");
    
-   private static Path detectShardDir() {
+   private Path detectShardDir() {
       // 1) optioneel override
       String p = System.getProperty("puzzle.shards.dir");
       if (p != null && !p.isBlank()) return Path.of(p).toAbsolutePath().normalize();
       
       // 2) default: naast classes output (CLASS_OUTPUT/shards)
       try {
-         var url = Meta.class.getProtectionDomain().getCodeSource().getLocation(); // classes dir (niet jar)
+         var  url     = Meta.class.getProtectionDomain().getCodeSource().getLocation(); // classes dir (niet jar)
          Path classes = Path.of(url.toURI());
          return classes.resolve("shards");
       } catch (Exception e) {
@@ -43,7 +43,7 @@ public class Meta {
       }
    }
    // --- Lookup: w -> i using mmap ---
-   static int findIndexInMapMmap(long target) throws IOException {
+   private int findIndexInMapMmap(long target) throws IOException {
       try (var ch = FileChannel.open(Meta.shardMap, StandardOpenOption.READ)) {
          var mbb = (MappedByteBuffer) ch.map(FileChannel.MapMode.READ_ONLY, 0, ch.size()).order(ORDER);
          
@@ -67,7 +67,7 @@ public class Meta {
    }
    
    // --- Read record i from shard.data (your format) ---
-   static ShardLem readRecord(long w, int i) throws IOException {
+   private ShardLem readRecord(long w, int i) throws IOException {
       try (var ch = FileChannel.open(Meta.shardData, StandardOpenOption.READ)) {
          var hdr = ByteBuffer.allocate(12).order(ORDER);
          ch.read(hdr);
@@ -97,11 +97,11 @@ public class Meta {
          
          var simpel = Integer.parseInt(parts[1]);
          var clues  = GSON.fromJson(parts[2], String[].class);
-         return new ShardLem(w, simpel, clues);
+         return new ShardLem(w, simpel, i, clues);
       }
    }
    
-   static int readIntAt(FileChannel ch, long pos) throws IOException {
+   private int readIntAt(FileChannel ch, long pos) throws IOException {
       var b = ByteBuffer.allocate(4).order(ORDER);
       ch.position(pos);
       ch.read(b);
@@ -109,23 +109,18 @@ public class Meta {
       return b.getInt();
    }
    
-   // --- Demo main ---
-   public static ShardLem lookup(long w) {
+   public record ShardLem(long w, int simpel, int mmap, String[] clues) { }
+   
+   public ShardLem lookupSilent(long w) {
       try {
-         var i = findIndexInMapMmap(Lemma.pack43(w));
-         System.out.println("\nQuery: w=" + w + " -> i=" + i);
+         var i = findIndexInMapMmap(Lemma.packLetterAndLengthBits(w));
          if (i >= 0) {
-            var rec = readRecord(w, i);
-            System.out.println("  simpel=" + rec.simpel());
-            System.out.println("  clues=" + Arrays.toString(rec.clues()));
-            return rec;
+            return readRecord(w, i);
          } else {
-            System.out.println("  NOT FOUND");
-            throw new RuntimeException("NOT FOUND");
+            throw new RuntimeException("NOT FOUND{w=" + w + ", text=" + Lemma.asWord(w, new byte[8]) + "}");
          }
       } catch (Exception e) {
          throw new RuntimeException(e);
       }
    }
-   public record ShardLem(long w, int simpel, String[] clues) { }
 }