package net.florianschoppmann.java.reflect;
   
   import javax.annotation.Nullable;
   import javax.lang.model.type.TypeKind;
   import javax.lang.model.type.TypeVisitor;
   import javax.lang.model.type.WildcardType;
   import java.util.Objects;
   
   final class WildcardTypeImpl extends AnnotatedConstructImpl implements ReflectionTypeMirror, WildcardType {
      /**
       * Upper bound of this wildcard. If no upper bound is explicitly declared, this field contains {@code null}.
       */
      @Nullable private final ReflectionTypeMirror extendsBound;
  
      /**
       * Lower bound of this wildcard. If no lower bound is explicitly declared, this field contains {@code null}.
       */
      @Nullable private final ReflectionTypeMirror superBound;
  
      WildcardTypeImpl(@Nullable ReflectionTypeMirror extendsBound, @Nullable ReflectionTypeMirror superBound) {
          this.extendsBound = extendsBound;
          this.superBound = superBound;
      }
  
      @Override
      public boolean equals(@Nullable Object otherObject) {
          if (this == otherObject) {
              return true;
          } else if (otherObject == null || getClass() != otherObject.getClass()) {
              return false;
          }
  
          WildcardTypeImpl other = (WildcardTypeImpl) otherObject;
          return Objects.equals(extendsBound, other.extendsBound)
              && Objects.equals(superBound, other.superBound);
      }
  
      @Override
      public int hashCode() {
          return Objects.hash(extendsBound, superBound);
      }
  
      @Override
      public String toString() {
          return ReflectionTypes.getInstance().toString(this);
      }
  
      @Override
      public <R, P> R accept(TypeVisitor<R, P> visitor, @Nullable P parameter) {
          return visitor.visitWildcard(this, parameter);
      }
  
      @Override
      @Nullable
      public ReflectionTypeMirror getExtendsBound() {
          return extendsBound;
      }
  
      @Override
      @Nullable
      public ReflectionTypeMirror getSuperBound() {
          return superBound;
      }
  
      @Override
      public TypeKind getKind() {
          return TypeKind.WILDCARD;
      }
  }