package mockit.asm.constantPool;
   
   import edu.umd.cs.findbugs.annotations.NonNull;
   
   import mockit.asm.types.JavaType;
   
   import org.checkerframework.checker.index.qual.NonNegative;
   
   public class TypeOrMemberItem extends Item {
      @NonNull
      String name;
      @NonNull
      String desc;
      @NonNegative
      private int argSize;
  
      TypeOrMemberItem(@NonNegative int index) {
          super(index);
          name = desc = "";
      }
  
      TypeOrMemberItem(@NonNegative int index, @NonNull TypeOrMemberItem item) {
          super(index, item);
          name = item.name;
          desc = item.desc;
      }
  
      @NonNull
      public String getName() {
          return name;
      }
  
      @NonNull
      public String getDesc() {
          return desc;
      }
  
      /**
       * Sets the name and type descriptor of this item, and computes its hashcode.
       */
      final void setValuesAndHashcode(@NonNull String name, @NonNull String desc, @NonNegative int hashCodeMultiplier) {
          this.name = name;
          this.desc = desc;
          setHashCode(hashCodeMultiplier * name.hashCode() * desc.hashCode());
      }
  
      @Override
      boolean isEqualTo(@NonNull Item item) {
          return isEqualTo((TypeOrMemberItem) item);
      }
  
      final boolean isEqualTo(@NonNull TypeOrMemberItem item) {
          return item.name.equals(name) && item.desc.equals(desc);
      }
  
      /**
       * Recovers the stack size variation from this constant pool item, computing and storing it if needed. The
       * {@link #argSize} field stores the sizes of the arguments and of the return value corresponding to
       * <code>desc</code>.
       */
      @NonNegative
      public final int getArgSizeComputingIfNeeded(@NonNull String methodDesc) {
          int thisArgSize = argSize;
  
          if (thisArgSize == 0) {
              thisArgSize = JavaType.getArgumentsAndReturnSizes(methodDesc);
              argSize = thisArgSize;
          }
  
          return thisArgSize;
      }
  }