package mockit.asm.classes;
   
   import edu.umd.cs.findbugs.annotations.NonNull;
   import edu.umd.cs.findbugs.annotations.Nullable;
   
   import mockit.asm.constantPool.AttributeWriter;
   import mockit.asm.constantPool.ConstantPoolGeneration;
   import mockit.asm.util.ByteVector;
   
  import org.checkerframework.checker.index.qual.NonNegative;
  
  final class InnerClassesWriter extends AttributeWriter {
      @NonNull
      private final ByteVector innerClasses;
      @NonNegative
      private int innerClassesCount;
  
      InnerClassesWriter(@NonNull ConstantPoolGeneration cp) {
          super(cp, "InnerClasses");
          innerClasses = new ByteVector();
      }
  
      void add(@NonNull String name, @Nullable String outerName, @Nullable String innerName, int access) {
          innerClasses.putShort(cp.newClass(name));
          innerClasses.putShort(outerName == null ? 0 : cp.newClass(outerName));
          innerClasses.putShort(innerName == null ? 0 : cp.newUTF8(innerName));
          innerClasses.putShort(access);
          innerClassesCount++;
      }
  
      @NonNegative
      @Override
      public int getSize() {
          return 8 + innerClasses.getLength();
      }
  
      @Override
      public void put(@NonNull ByteVector out) {
          put(out, 2 + innerClasses.getLength());
          out.putShort(innerClassesCount);
          out.putByteVector(innerClasses);
      }
  }