Add RandomAccessMemory class for in-memory binary operations

dart/lib/debug.dart

@@ -0,0 +1,50 @@
+
+import 'dart:typed_data';
+
+String binaryDump(Uint8List data) {
+  StringBuffer buffer = StringBuffer();
+
+  for (int i = 0; i < data.length; i += 16) {
+    // Address
+    buffer.write('0x${i.toRadixString(16).padLeft(4, '0').toUpperCase()} (${i.toString().padLeft(4)}) | ');
+
+    // Hex bytes
+    for (int j = 0; j < 16; j++) {
+      if (i + j < data.length) {
+        buffer.write('${data[i + j].toRadixString(16).padLeft(2, '0').toUpperCase()} ');
+      } else {
+        buffer.write('   ');
+      }
+    }
+
+    buffer.write(' | ');
+
+    // Integer representation
+    for (int j = 0; j < 16; j++) {
+      if (i + j < data.length) {
+        buffer.write('${data[i + j].toString().padLeft(3)} ');
+      } else {
+        buffer.write('    ');
+      }
+    }
+
+    buffer.write(' | ');
+
+    // ASCII representation
+    for (int j = 0; j < 16; j++) {
+      if (i + j < data.length) {
+        int byte = data[i + j];
+        if (byte >= 32 && byte <= 126) {
+          buffer.write(String.fromCharCode(byte));
+        } else {
+          buffer.write('.');
+        }
+      }
+    }
+
+    buffer.write(' | ');
+    if (i + 16 < data.length) buffer.writeln();
+  }
+
+  return buffer.toString();
+}