Ejemplo n.º 1
0
  /**
   * Establishes the type bound:
   *
   * <ol>
   *   <li>{@code<? extends Number>}, returns Number
   *   <li>{@code<? super Number>}, returns Number
   *   <li>{@code<?>}, returns Object
   *   <li>{@code<T extends Number>, returns Number}
   * </ol>
   *
   * @param typeMirror the type to return the bound for
   * @return the bound for this parameter
   */
  public TypeMirror getTypeBound(TypeMirror typeMirror) {
    if (typeMirror.getKind() == TypeKind.WILDCARD) {
      WildcardType wildCardType = (WildcardType) typeMirror;
      if (wildCardType.getExtendsBound() != null) {
        return wildCardType.getExtendsBound();
      }

      if (wildCardType.getSuperBound() != null) {
        return wildCardType.getSuperBound();
      }

      String wildCardName = wildCardType.toString();
      if ("?".equals(wildCardName)) {
        return elementUtils.getTypeElement(Object.class.getCanonicalName()).asType();
      }
    } else if (typeMirror.getKind() == TypeKind.TYPEVAR) {
      TypeVariable typeVariableType = (TypeVariable) typeMirror;
      if (typeVariableType.getUpperBound() != null) {
        return typeVariableType.getUpperBound();
      }
      // Lowerbounds intentionally left out: Type variables otherwise have a lower bound of
      // NullType.
    }

    return typeMirror;
  }
Ejemplo n.º 2
0
  void caseType(TypeMirror type) {
    if (ended) {
      // to prevent additional recursive effects when using workaround
      return;
    }
    switch (type.getKind()) {
      case ERROR:
        unresolvedTypeHasOccured = true;
        // $FALL-THROUGH$
      case DECLARED:
        DeclaredType declaredType = (DeclaredType) type;
        appendResolved(declaredType);
        appendTypeArguments(type, declaredType);
        break;
      case ARRAY:
        TypeMirror componentType = ((ArrayType) type).getComponentType();
        int mark = buffer.length();
        caseType(componentType);
        cutTypeArgument(type, mark);
        buffer.append('[').append(']');
        break;
      case WILDCARD:
        WildcardType wildcard = (WildcardType) type;
        @Nullable TypeMirror extendsBound = wildcard.getExtendsBound();
        @Nullable TypeMirror superBound = wildcard.getSuperBound();
        if (extendsBound != null) {
          buffer.append("? extends ");
          caseType(extendsBound);
        } else if (superBound != null) {
          buffer.append("? super ");
          caseType(superBound);
        } else {
          buffer.append('?');
        }
        break;
      case TYPEVAR:
        // this workaround breaks this recursive flow, so we set up
        // ended flag

        if (tryToUseSourceAsAWorkaround()) {
          ended = true;
          break;
        }

        reporter.error(
            "It is a compiler/annotation processing bug to receive type variables '%s' here."
                + " To avoid it — do not use not yet generated types in %s attribute",
            type, element.getSimpleName());

        // just append as toString whatever we have
        buffer.append(type);
        break;
      default:
        buffer.append(type);
    }
  }
Ejemplo n.º 3
0
 public static TypeName get(javax.lang.model.type.WildcardType mirror) {
   TypeMirror extendsBound = mirror.getExtendsBound();
   if (extendsBound == null) {
     TypeMirror superBound = mirror.getSuperBound();
     if (superBound == null) {
       return subtypeOf(Object.class);
     } else {
       return supertypeOf(TypeName.get(superBound));
     }
   } else {
     return subtypeOf(TypeName.get(extendsBound));
   }
 }
Ejemplo n.º 4
0
 static TypeName get(
     javax.lang.model.type.WildcardType mirror,
     Map<TypeParameterElement, TypeVariableName> typeVariables) {
   TypeMirror extendsBound = mirror.getExtendsBound();
   if (extendsBound == null) {
     TypeMirror superBound = mirror.getSuperBound();
     if (superBound == null) {
       return subtypeOf(Object.class);
     } else {
       return supertypeOf(TypeName.get(superBound, typeVariables));
     }
   } else {
     return subtypeOf(TypeName.get(extendsBound, typeVariables));
   }
 }
Ejemplo n.º 5
0
    @Override
    public JsonElement visitList(DeclaredType t, Element el) {

      JsonElement jsonElement;

      String converterClassName = getConverterClassName(el);
      if (converterClassName != null) {
        jsonElement = genJsonElement(t, el, Kind.CONVERTER);

      } else {

        List<? extends TypeMirror> generics = t.getTypeArguments();
        if (generics.size() != 1) {
          Log.e("expected single type generics.", el);
          encountError = true;
          return defaultAction(t, el);
        }
        TypeMirror tm = generics.get(0);
        if (tm instanceof WildcardType) {
          WildcardType wt = (WildcardType) tm;
          TypeMirror extendsBound = wt.getExtendsBound();
          if (extendsBound != null) {
            tm = extendsBound;
          }
          TypeMirror superBound = wt.getSuperBound();
          if (superBound != null) {
            Log.e("super is not supported.", el);
            encountError = true;
            return defaultAction(t, el);
          }
        }

        Element type = processingEnv.getTypeUtils().asElement(tm);
        JsonModel hash = type.getAnnotation(JsonModel.class);
        if (hash == null) {
          Log.e("expect for use decorated class by JsonModel annotation.", el);
          encountError = true;
          return defaultAction(t, el);
        }

        jsonElement = new JsonElement();
        jsonElement.setKey(getElementKeyString(el));

        JsonKey key = el.getAnnotation(JsonKey.class);

        String setter = getElementSetter(el);
        if (key.in() && setter == null) {
          Log.e("can't find setter method", el);
          encountError = true;
          return defaultAction(t, el);
        }

        String getter = getElementGetter(el);
        if (key.out() && getter == null) {
          Log.e("can't find getter method", el);
          encountError = true;
          return defaultAction(t, el);
        }

        jsonElement.setIn(key.in());
        jsonElement.setSetter(setter);
        jsonElement.setOut(key.out());
        jsonElement.setGetter(getter);
        jsonElement.setModelName(tm.toString());
        jsonElement.setKind(Kind.LIST);
      }

      return jsonElement;
    }
Ejemplo n.º 6
0
 static WildcardName forTypeMirror(WildcardType mirror) {
   return new WildcardName(
       Optional.fromNullable(mirror.getExtendsBound()).transform(FOR_TYPE_MIRROR),
       Optional.fromNullable(mirror.getSuperBound()).transform(FOR_TYPE_MIRROR));
 }