package mockit.asm.constantPool;
   
   import edu.umd.cs.findbugs.annotations.NonNull;
   
   import mockit.asm.util.ByteVector;
   
   import org.checkerframework.checker.index.qual.NonNegative;
   
   public abstract class AttributeWriter {
      @NonNull
      protected final ConstantPoolGeneration cp;
  
      /**
       * The index of the constant pool item that contains the name of the associated attribute.
       */
      @NonNegative
      protected int attributeIndex;
  
      protected AttributeWriter(@NonNull ConstantPoolGeneration cp) {
          this.cp = cp;
      }
  
      protected AttributeWriter(@NonNull ConstantPoolGeneration cp, @NonNull String attributeName) {
          this.cp = cp;
          setAttribute(attributeName);
      }
  
      protected final void setAttribute(@NonNull String attributeName) {
          attributeIndex = cp.newUTF8(attributeName);
      }
  
      @NonNegative
      public abstract int getSize();
  
      public void put(@NonNull ByteVector out) {
          put(out, 2);
      }
  
      protected final void put(@NonNull ByteVector out, @NonNegative int size) {
          out.putShort(attributeIndex).putInt(size);
      }
  }