Esempio n. 1
0
  // allowedFinalSupertypes typically contains a enum type of which supertypeOwner is an entry
  private void checkSupertypeList(
      @NotNull MutableClassDescriptor supertypeOwner,
      @NotNull Map<JetTypeReference, JetType> supertypes,
      Set<TypeConstructor> allowedFinalSupertypes) {
    Set<TypeConstructor> typeConstructors = Sets.newHashSet();
    boolean classAppeared = false;
    for (Map.Entry<JetTypeReference, JetType> entry : supertypes.entrySet()) {
      JetTypeReference typeReference = entry.getKey();
      JetType supertype = entry.getValue();

      ClassDescriptor classDescriptor = TypeUtils.getClassDescriptor(supertype);
      if (classDescriptor != null) {
        if (classDescriptor.getKind() != ClassKind.TRAIT) {
          if (classAppeared) {
            trace.report(MANY_CLASSES_IN_SUPERTYPE_LIST.on(typeReference));
          } else {
            classAppeared = true;
          }
        }
      } else {
        trace.report(SUPERTYPE_NOT_A_CLASS_OR_TRAIT.on(typeReference));
      }

      TypeConstructor constructor = supertype.getConstructor();
      if (!typeConstructors.add(constructor)) {
        trace.report(SUPERTYPE_APPEARS_TWICE.on(typeReference));
      }

      if (constructor.isSealed() && !allowedFinalSupertypes.contains(constructor)) {
        trace.report(FINAL_SUPERTYPE.on(typeReference));
      }
    }
  }
Esempio n. 2
0
  public void resolvePropertyDelegate(
      @NotNull DataFlowInfo outerDataFlowInfo,
      @NotNull JetProperty jetProperty,
      @NotNull PropertyDescriptor propertyDescriptor,
      @NotNull JetExpression delegateExpression,
      @NotNull LexicalScope parentScopeForAccessor,
      @NotNull LexicalScope propertyScope) {
    JetPropertyAccessor getter = jetProperty.getGetter();
    if (getter != null && getter.hasBody()) {
      trace.report(ACCESSOR_FOR_DELEGATED_PROPERTY.on(getter));
    }

    JetPropertyAccessor setter = jetProperty.getSetter();
    if (setter != null && setter.hasBody()) {
      trace.report(ACCESSOR_FOR_DELEGATED_PROPERTY.on(setter));
    }

    LexicalScope propertyDeclarationInnerScope =
        JetScopeUtils.getPropertyDeclarationInnerScopeForInitializer(
            propertyDescriptor, propertyScope, propertyDescriptor.getTypeParameters(), null, trace);
    LexicalScope accessorScope =
        JetScopeUtils.makeScopeForPropertyAccessor(
            propertyDescriptor, parentScopeForAccessor, trace);

    JetType delegateType =
        delegatedPropertyResolver.resolveDelegateExpression(
            delegateExpression,
            jetProperty,
            propertyDescriptor,
            propertyDeclarationInnerScope,
            accessorScope,
            trace,
            outerDataFlowInfo);

    delegatedPropertyResolver.resolveDelegatedPropertyGetMethod(
        propertyDescriptor, delegateExpression, delegateType, trace, accessorScope);

    if (jetProperty.isVar()) {
      delegatedPropertyResolver.resolveDelegatedPropertySetMethod(
          propertyDescriptor, delegateExpression, delegateType, trace, accessorScope);
    }

    delegatedPropertyResolver.resolveDelegatedPropertyPDMethod(
        propertyDescriptor, delegateExpression, delegateType, trace, accessorScope);
  }
Esempio n. 3
0
 public void resolveAnonymousInitializer(
     @NotNull DataFlowInfo outerDataFlowInfo,
     @NotNull JetClassInitializer anonymousInitializer,
     @NotNull ClassDescriptorWithResolutionScopes classDescriptor) {
   LexicalScope scopeForInitializers = classDescriptor.getScopeForInitializerResolution();
   if (!classDescriptor.getConstructors().isEmpty()) {
     JetExpression body = anonymousInitializer.getBody();
     if (body != null) {
       expressionTypingServices.getType(
           scopeForInitializers, body, NO_EXPECTED_TYPE, outerDataFlowInfo, trace);
     }
     processModifiersOnInitializer(anonymousInitializer, scopeForInitializers);
   } else {
     trace.report(ANONYMOUS_INITIALIZER_IN_TRAIT.on(anonymousInitializer));
     processModifiersOnInitializer(anonymousInitializer, scopeForInitializers);
   }
 }
Esempio n. 4
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  private void reportEachConstructorOnCycle(@NotNull ConstructorDescriptor startConstructor) {
    ConstructorDescriptor currentConstructor = startConstructor;
    do {
      PsiElement constructorToReport =
          DescriptorToSourceUtils.descriptorToDeclaration(currentConstructor);
      if (constructorToReport != null) {
        JetConstructorDelegationCall call =
            ((JetSecondaryConstructor) constructorToReport).getDelegationCall();
        assert call.getCalleeExpression() != null
            : "Callee expression of delegation call should not be null on cycle as there should be explicit 'this' calls";
        trace.report(CYCLIC_CONSTRUCTOR_DELEGATION_CALL.on(call.getCalleeExpression()));
      }

      currentConstructor = getDelegatedConstructor(currentConstructor);
      assert currentConstructor != null : "Delegated constructor should not be null in cycle";
    } while (startConstructor != currentConstructor);
  }
Esempio n. 5
0
 private void resolveAnonymousInitializers(
     JetClassOrObject jetClassOrObject, MutableClassDescriptor classDescriptor) {
   if (!context.completeAnalysisNeeded(jetClassOrObject)) return;
   List<JetClassInitializer> anonymousInitializers = jetClassOrObject.getAnonymousInitializers();
   if (classDescriptor.getUnsubstitutedPrimaryConstructor() != null) {
     ConstructorDescriptor primaryConstructor =
         classDescriptor.getUnsubstitutedPrimaryConstructor();
     assert primaryConstructor != null;
     final JetScope scopeForInitializers = classDescriptor.getScopeForInitializers();
     for (JetClassInitializer anonymousInitializer : anonymousInitializers) {
       expressionTypingServices.getType(
           scopeForInitializers, anonymousInitializer.getBody(), NO_EXPECTED_TYPE, trace);
     }
   } else {
     for (JetClassInitializer anonymousInitializer : anonymousInitializers) {
       trace.report(ANONYMOUS_INITIALIZER_WITHOUT_CONSTRUCTOR.on(anonymousInitializer));
     }
   }
 }
Esempio n. 6
0
  private void resolveSecondaryConstructorBody(
      JetSecondaryConstructor declaration, final ConstructorDescriptor descriptor) {
    if (!context.completeAnalysisNeeded(declaration)) return;
    MutableClassDescriptor classDescriptor =
        (MutableClassDescriptor) descriptor.getContainingDeclaration();
    final JetScope scopeForSupertypeInitializers =
        FunctionDescriptorUtil.getFunctionInnerScope(
            classDescriptor.getScopeForSupertypeResolution(), descriptor, trace);
    // contains only constructor parameters
    final JetScope scopeForConstructorBody =
        FunctionDescriptorUtil.getFunctionInnerScope(
            classDescriptor.getScopeForInitializers(), descriptor, trace);
    // contains members & backing fields

    final DataFlowInfo dataFlowInfo = DataFlowInfo.EMPTY; // TODO: dataFlowInfo

    PsiElement nameElement = declaration.getNameNode().getPsi();
    if (classDescriptor.getUnsubstitutedPrimaryConstructor() == null) {
      trace.report(SECONDARY_CONSTRUCTOR_BUT_NO_PRIMARY.on(nameElement));
    } else {
      List<JetDelegationSpecifier> initializers = declaration.getInitializers();
      if (initializers.isEmpty()) {
        trace.report(SECONDARY_CONSTRUCTOR_NO_INITIALIZER_LIST.on(nameElement));
      } else {
        initializers
            .get(0)
            .accept(
                new JetVisitorVoid() {
                  @Override
                  public void visitDelegationToSuperCallSpecifier(JetDelegatorToSuperCall call) {
                    JetTypeReference typeReference = call.getTypeReference();
                    if (typeReference != null) {
                      callResolver.resolveFunctionCall(
                          trace,
                          scopeForSupertypeInitializers,
                          CallMaker.makeCall(ReceiverDescriptor.NO_RECEIVER, null, call),
                          NO_EXPECTED_TYPE,
                          dataFlowInfo);
                    }
                  }

                  @Override
                  public void visitDelegationToThisCall(JetDelegatorToThisCall call) {
                    // TODO : check that there's no recursion in this() calls
                    // TODO : check: if a this() call is present, no other initializers are allowed
                    ClassDescriptor classDescriptor = descriptor.getContainingDeclaration();

                    callResolver.resolveFunctionCall(
                        trace,
                        scopeForSupertypeInitializers,
                        CallMaker.makeCall(ReceiverDescriptor.NO_RECEIVER, null, call),
                        NO_EXPECTED_TYPE,
                        dataFlowInfo);
                    //                                call.getThisReference(),
                    //                                classDescriptor,
                    //                                classDescriptor.getDefaultType(),
                    //                                call);
                    //                        trace.getErrorHandler().genericError(call.getNode(),
                    // "this-calls are not supported");
                  }

                  @Override
                  public void visitDelegationByExpressionSpecifier(
                      JetDelegatorByExpressionSpecifier specifier) {
                    trace.report(BY_IN_SECONDARY_CONSTRUCTOR.on(specifier));
                  }

                  @Override
                  public void visitDelegationToSuperClassSpecifier(
                      JetDelegatorToSuperClass specifier) {
                    trace.report(INITIALIZER_WITH_NO_ARGUMENTS.on(specifier));
                  }

                  @Override
                  public void visitDelegationSpecifier(JetDelegationSpecifier specifier) {
                    throw new IllegalStateException();
                  }
                });
        for (int i = 1, initializersSize = initializers.size(); i < initializersSize; i++) {
          JetDelegationSpecifier initializer = initializers.get(i);
          trace.report(MANY_CALLS_TO_THIS.on(initializer));
        }
      }
    }
    JetExpression bodyExpression = declaration.getBodyExpression();
    if (bodyExpression != null) {

      expressionTypingServices.checkFunctionReturnType(
          scopeForConstructorBody,
          declaration,
          descriptor,
          JetStandardClasses.getUnitType(),
          trace);
    }

    checkDefaultParameterValues(
        declaration.getValueParameters(), descriptor.getValueParameters(), scopeForConstructorBody);
  }
Esempio n. 7
0
  private void checkSupertypeList(
      @NotNull ClassDescriptor supertypeOwner,
      @NotNull Map<JetTypeReference, JetType> supertypes,
      @NotNull JetClassOrObject jetClass) {
    Set<TypeConstructor> allowedFinalSupertypes =
        getAllowedFinalSupertypes(supertypeOwner, jetClass);
    Set<TypeConstructor> typeConstructors = Sets.newHashSet();
    boolean classAppeared = false;
    for (Map.Entry<JetTypeReference, JetType> entry : supertypes.entrySet()) {
      JetTypeReference typeReference = entry.getKey();
      JetType supertype = entry.getValue();

      boolean addSupertype = true;

      ClassDescriptor classDescriptor = TypeUtils.getClassDescriptor(supertype);
      if (classDescriptor != null) {
        if (ErrorUtils.isError(classDescriptor)) continue;

        if (classDescriptor.getKind() != ClassKind.INTERFACE) {
          if (supertypeOwner.getKind() == ClassKind.ENUM_CLASS) {
            trace.report(CLASS_IN_SUPERTYPE_FOR_ENUM.on(typeReference));
            addSupertype = false;
          } else if (supertypeOwner.getKind() == ClassKind.INTERFACE
              && !classAppeared
              && !TypesPackage.isDynamic(supertype) /* avoid duplicate diagnostics */) {
            trace.report(TRAIT_WITH_SUPERCLASS.on(typeReference));
            addSupertype = false;
          }

          if (classAppeared) {
            trace.report(MANY_CLASSES_IN_SUPERTYPE_LIST.on(typeReference));
          } else {
            classAppeared = true;
          }
        }
      } else {
        trace.report(SUPERTYPE_NOT_A_CLASS_OR_TRAIT.on(typeReference));
      }

      TypeConstructor constructor = supertype.getConstructor();
      if (addSupertype && !typeConstructors.add(constructor)) {
        trace.report(SUPERTYPE_APPEARS_TWICE.on(typeReference));
      }

      if (DescriptorUtils.isSingleton(classDescriptor)) {
        trace.report(SINGLETON_IN_SUPERTYPE.on(typeReference));
      } else if (constructor.isFinal() && !allowedFinalSupertypes.contains(constructor)) {
        if (classDescriptor.getModality() == Modality.SEALED) {
          DeclarationDescriptor containingDescriptor = supertypeOwner.getContainingDeclaration();
          while (containingDescriptor != null && containingDescriptor != classDescriptor) {
            containingDescriptor = containingDescriptor.getContainingDeclaration();
          }
          if (containingDescriptor == null) {
            trace.report(SEALED_SUPERTYPE.on(typeReference));
          } else {
            trace.report(SEALED_SUPERTYPE_IN_LOCAL_CLASS.on(typeReference));
          }
        } else {
          trace.report(FINAL_SUPERTYPE.on(typeReference));
        }
      }
    }
  }
Esempio n. 8
0
  public void resolveDelegationSpecifierList(
      @NotNull final DataFlowInfo outerDataFlowInfo,
      @NotNull JetClassOrObject jetClass,
      @NotNull final ClassDescriptor descriptor,
      @Nullable final ConstructorDescriptor primaryConstructor,
      @NotNull LexicalScope scopeForSupertypeResolution,
      @NotNull final LexicalScope scopeForMemberResolution) {
    final LexicalScope scopeForConstructor =
        primaryConstructor == null
            ? null
            : FunctionDescriptorUtil.getFunctionInnerScope(
                scopeForSupertypeResolution, primaryConstructor, trace);
    final ExpressionTypingServices typeInferrer = expressionTypingServices; // TODO : flow

    final Map<JetTypeReference, JetType> supertypes = Maps.newLinkedHashMap();
    final ResolvedCall<?>[] primaryConstructorDelegationCall = new ResolvedCall[1];
    JetVisitorVoid visitor =
        new JetVisitorVoid() {
          private void recordSupertype(JetTypeReference typeReference, JetType supertype) {
            if (supertype == null) return;
            supertypes.put(typeReference, supertype);
          }

          @Override
          public void visitDelegationByExpressionSpecifier(
              @NotNull JetDelegatorByExpressionSpecifier specifier) {
            if (descriptor.getKind() == ClassKind.INTERFACE) {
              trace.report(DELEGATION_IN_TRAIT.on(specifier));
            }
            JetType supertype =
                trace.getBindingContext().get(BindingContext.TYPE, specifier.getTypeReference());
            recordSupertype(specifier.getTypeReference(), supertype);
            if (supertype != null) {
              DeclarationDescriptor declarationDescriptor =
                  supertype.getConstructor().getDeclarationDescriptor();
              if (declarationDescriptor instanceof ClassDescriptor) {
                ClassDescriptor classDescriptor = (ClassDescriptor) declarationDescriptor;
                if (classDescriptor.getKind() != ClassKind.INTERFACE) {
                  trace.report(DELEGATION_NOT_TO_TRAIT.on(specifier.getTypeReference()));
                }
              }
            }
            JetExpression delegateExpression = specifier.getDelegateExpression();
            if (delegateExpression != null) {
              LexicalScope scope =
                  scopeForConstructor == null ? scopeForMemberResolution : scopeForConstructor;
              JetType expectedType = supertype != null ? supertype : NO_EXPECTED_TYPE;
              typeInferrer.getType(
                  scope, delegateExpression, expectedType, outerDataFlowInfo, trace);
            }
            if (primaryConstructor == null) {
              trace.report(
                  UNSUPPORTED.on(
                      specifier, "Delegation without primary constructor is not supported"));
            }
          }

          @Override
          public void visitDelegationToSuperCallSpecifier(@NotNull JetDelegatorToSuperCall call) {
            JetValueArgumentList valueArgumentList = call.getValueArgumentList();
            PsiElement elementToMark = valueArgumentList == null ? call : valueArgumentList;
            if (descriptor.getKind() == ClassKind.INTERFACE) {
              trace.report(SUPERTYPE_INITIALIZED_IN_TRAIT.on(elementToMark));
            }
            JetTypeReference typeReference = call.getTypeReference();
            if (typeReference == null) return;
            if (primaryConstructor == null) {
              if (descriptor.getKind() != ClassKind.INTERFACE) {
                trace.report(SUPERTYPE_INITIALIZED_WITHOUT_PRIMARY_CONSTRUCTOR.on(call));
              }
              recordSupertype(
                  typeReference, trace.getBindingContext().get(BindingContext.TYPE, typeReference));
              return;
            }
            OverloadResolutionResults<FunctionDescriptor> results =
                callResolver.resolveFunctionCall(
                    trace,
                    scopeForConstructor,
                    CallMaker.makeCall(ReceiverValue.NO_RECEIVER, null, call),
                    NO_EXPECTED_TYPE,
                    outerDataFlowInfo,
                    false);
            if (results.isSuccess()) {
              JetType supertype = results.getResultingDescriptor().getReturnType();
              recordSupertype(typeReference, supertype);
              ClassDescriptor classDescriptor = TypeUtils.getClassDescriptor(supertype);
              if (classDescriptor != null) {
                // allow only one delegating constructor
                if (primaryConstructorDelegationCall[0] == null) {
                  primaryConstructorDelegationCall[0] = results.getResultingCall();
                } else {
                  primaryConstructorDelegationCall[0] = null;
                }
              }
              // Recording type info for callee to use later in JetObjectLiteralExpression
              trace.record(PROCESSED, call.getCalleeExpression(), true);
              trace.record(
                  EXPRESSION_TYPE_INFO,
                  call.getCalleeExpression(),
                  TypeInfoFactoryPackage.noTypeInfo(
                      results.getResultingCall().getDataFlowInfoForArguments().getResultInfo()));
            } else {
              recordSupertype(
                  typeReference, trace.getBindingContext().get(BindingContext.TYPE, typeReference));
            }
          }

          @Override
          public void visitDelegationToSuperClassSpecifier(
              @NotNull JetDelegatorToSuperClass specifier) {
            JetTypeReference typeReference = specifier.getTypeReference();
            JetType supertype = trace.getBindingContext().get(BindingContext.TYPE, typeReference);
            recordSupertype(typeReference, supertype);
            if (supertype == null) return;
            ClassDescriptor superClass = TypeUtils.getClassDescriptor(supertype);
            if (superClass == null) return;
            if (superClass.getKind().isSingleton()) {
              // A "singleton in supertype" diagnostic will be reported later
              return;
            }
            if (descriptor.getKind() != ClassKind.INTERFACE
                && descriptor.getUnsubstitutedPrimaryConstructor() != null
                && superClass.getKind() != ClassKind.INTERFACE
                && !superClass.getConstructors().isEmpty()
                && !ErrorUtils.isError(superClass)) {
              trace.report(SUPERTYPE_NOT_INITIALIZED.on(specifier));
            }
          }

          @Override
          public void visitJetElement(@NotNull JetElement element) {
            throw new UnsupportedOperationException(element.getText() + " : " + element);
          }
        };

    for (JetDelegationSpecifier delegationSpecifier : jetClass.getDelegationSpecifiers()) {
      delegationSpecifier.accept(visitor);
    }

    if (DescriptorUtils.isAnnotationClass(descriptor)
        && jetClass.getDelegationSpecifierList() != null) {
      trace.report(SUPERTYPES_FOR_ANNOTATION_CLASS.on(jetClass.getDelegationSpecifierList()));
    }

    if (primaryConstructorDelegationCall[0] != null && primaryConstructor != null) {
      recordConstructorDelegationCall(
          trace, primaryConstructor, primaryConstructorDelegationCall[0]);
    }

    checkSupertypeList(descriptor, supertypes, jetClass);
  }