Java Code Examples for org.eclipse.jdt.core.dom.ITypeBinding#isFromSource()

public static ICompilationUnit findCompilationUnit(ITypeBinding typeBinding, IJavaProject project) throws JavaModelException {
    if (!typeBinding.isFromSource()) {
        return null;
    }
    while (typeBinding != null && !typeBinding.isTopLevel()) {
        typeBinding= typeBinding.getDeclaringClass();
    }
    if (typeBinding != null) {
        IPackageBinding pack= typeBinding.getPackage();
        String packageName= pack.isUnnamed() ? "" : pack.getName(); //$NON-NLS-1$
        IType type= project.findType(packageName, typeBinding.getName());
        if (type != null) {
            return type.getCompilationUnit();
        }
    }
    return null;
}
 

private void inferPrimitiveType(SM_Project parentProject, TypeInfo typeInfo, ITypeBinding iType) {
	if (iType != null && iType.isFromSource() && iType.getModifiers() != 0 && !iType.isWildcardType()) {
		SM_Type inferredType = findType(iType.getName(), iType.getPackage().getName(), parentProject);
		if (inferredType != null) {
			typeInfo.setTypeObj(inferredType);
			typeInfo.setPrimitiveType(false);
		} else {
			typeInfo.setObjPrimitiveType(iType.getName());
			typeInfo.setPrimitiveType(true);
		}
	} else {
		if (iType == null)
			typeInfo.setObjPrimitiveType("wildcard");
		else
			typeInfo.setObjPrimitiveType(iType.getName());
		typeInfo.setPrimitiveType(true);
	}
}
 

private void addNonPrimitiveParameters(SM_Project parentProject, TypeInfo typeInfo, ITypeBinding iType) {
	if (iType.isFromSource() && iType.getModifiers() != 0) {
		SM_Type inferredBasicType = findType(iType.getName(), iType.getPackage().getName(), parentProject);
		addParameterIfNotAlreadyExists(typeInfo, inferredBasicType);
	}
	for (ITypeBinding typeParameter : iType.getTypeArguments()) {
		if (typeParameter.isParameterizedType()) {
			addNonPrimitiveParameters(parentProject, typeInfo, typeParameter);
		} else {
			if (typeParameter.isFromSource() && typeParameter.getModifiers() != 0) {
				SM_Type inferredType = findType(typeParameter.getName(), typeParameter.getPackage().getName(),
						parentProject);
				if (inferredType != null) {
					addParameterIfNotAlreadyExists(typeInfo, inferredType);
				}
			}
		}
	}
}
 

public static IStorage getResourceBundle(IJavaProject javaProject, AccessorClassReference accessorClassReference) throws JavaModelException {
	String resourceBundle= accessorClassReference.getResourceBundleName();
	if (resourceBundle == null)
		return null;

	String resourceName= Signature.getSimpleName(resourceBundle) + NLSRefactoring.PROPERTY_FILE_EXT;
	String packName= Signature.getQualifier(resourceBundle);
	ITypeBinding accessorClass= accessorClassReference.getBinding();

	if (accessorClass.isFromSource())
		return getResourceBundle(javaProject, packName, resourceName);
	else if (accessorClass.getJavaElement() != null)
		return getResourceBundle((IPackageFragmentRoot)accessorClass.getJavaElement().getAncestor(IJavaElement.PACKAGE_FRAGMENT_ROOT), packName, resourceName);

	return null;
}
 

private static CompilationUnit findCUForMethod(CompilationUnit compilationUnit, ICompilationUnit cu, IMethodBinding methodBinding) {
	ASTNode methodDecl= compilationUnit.findDeclaringNode(methodBinding.getMethodDeclaration());
	if (methodDecl == null) {
		// is methodDecl defined in another CU?
		ITypeBinding declaringTypeDecl= methodBinding.getDeclaringClass().getTypeDeclaration();
		if (declaringTypeDecl.isFromSource()) {
			ICompilationUnit targetCU= null;
			try {
				targetCU= ASTResolving.findCompilationUnitForBinding(cu, compilationUnit, declaringTypeDecl);
			} catch (JavaModelException e) { /* can't do better */
			}
			if (targetCU != null) {
				return ASTResolving.createQuickFixAST(targetCU, null);
			}
		}
		return null;
	}
	return compilationUnit;
}
 

public static ICompilationUnit findCompilationUnitForBinding(ICompilationUnit cu, CompilationUnit astRoot, ITypeBinding binding) throws JavaModelException {
	if (binding == null || !binding.isFromSource() || binding.isTypeVariable() || binding.isWildcardType()) {
		return null;
	}
	ASTNode node= astRoot.findDeclaringNode(binding.getTypeDeclaration());
	if (node == null) {
		ICompilationUnit targetCU= Bindings.findCompilationUnit(binding, cu.getJavaProject());
		if (targetCU != null) {
			return targetCU;
		}
		return null;
	} else if (node instanceof AbstractTypeDeclaration || node instanceof AnonymousClassDeclaration) {
		return cu;
	}
	return null;
}
 

private static void addNewFieldProposals(ICompilationUnit cu, CompilationUnit astRoot, ITypeBinding binding,
		ITypeBinding declaringTypeBinding, SimpleName simpleName, boolean isWriteAccess,
		Collection<ChangeCorrectionProposal> proposals) throws JavaModelException {
	// new variables
	ICompilationUnit targetCU;
	ITypeBinding senderDeclBinding;
	if (binding != null) {
		senderDeclBinding= binding.getTypeDeclaration();
		targetCU= ASTResolving.findCompilationUnitForBinding(cu, astRoot, senderDeclBinding);
	} else { // binding is null for accesses without qualifier
		senderDeclBinding= declaringTypeBinding;
		targetCU= cu;
	}

	if (!senderDeclBinding.isFromSource() || targetCU == null) {
		return;
	}

	boolean mustBeConst= ASTResolving.isInsideModifiers(simpleName);

	addNewFieldForType(targetCU, binding, senderDeclBinding, simpleName, isWriteAccess, mustBeConst, proposals);

	if (binding == null && senderDeclBinding.isNested()) {
		ASTNode anonymDecl= astRoot.findDeclaringNode(senderDeclBinding);
		if (anonymDecl != null) {
			ITypeBinding bind= Bindings.getBindingOfParentType(anonymDecl.getParent());
			if (!bind.isAnonymous()) {
				addNewFieldForType(targetCU, bind, bind, simpleName, isWriteAccess, mustBeConst, proposals);
			}
		}
	}
}
 

/**
 * Computes the target categories for the method to move.
 *
 * @param declaration
 *            the method declaration
 * @return the possible targets as variable bindings of read-only fields and
 *         parameters
 */
protected IVariableBinding[] computeTargetCategories(final MethodDeclaration declaration) {
	Assert.isNotNull(declaration);
	if (fPossibleTargets.length == 0 || fCandidateTargets.length == 0) {
		final List<IVariableBinding> possibleTargets= new ArrayList<IVariableBinding>(16);
		final List<IVariableBinding> candidateTargets= new ArrayList<IVariableBinding>(16);
		final IMethodBinding method= declaration.resolveBinding();
		if (method != null) {
			final ITypeBinding declaring= method.getDeclaringClass();
			IVariableBinding[] bindings= getArgumentBindings(declaration);
			ITypeBinding binding= null;
			for (int index= 0; index < bindings.length; index++) {
				binding= bindings[index].getType();
				if ((binding.isClass() || binding.isEnum() || is18OrHigherInterface(binding)) && binding.isFromSource()) {
					possibleTargets.add(bindings[index]);
					candidateTargets.add(bindings[index]);
				}
			}
			final ReadyOnlyFieldFinder visitor= new ReadyOnlyFieldFinder(declaring);
			declaration.accept(visitor);
			bindings= visitor.getReadOnlyFields();
			for (int index= 0; index < bindings.length; index++) {
				binding= bindings[index].getType();
				if ((binding.isClass() || is18OrHigherInterface(binding)) && binding.isFromSource())
					possibleTargets.add(bindings[index]);
			}
			bindings= visitor.getDeclaredFields();
			for (int index= 0; index < bindings.length; index++) {
				binding= bindings[index].getType();
				if ((binding.isClass() || is18OrHigherInterface(binding)) && binding.isFromSource())
					candidateTargets.add(bindings[index]);
			}
		}
		fPossibleTargets= new IVariableBinding[possibleTargets.size()];
		possibleTargets.toArray(fPossibleTargets);
		fCandidateTargets= new IVariableBinding[candidateTargets.size()];
		candidateTargets.toArray(fCandidateTargets);
	}
	return fPossibleTargets;
}
 

public static void addAddSafeVarargsToDeclarationProposals(IInvocationContext context, IProblemLocation problem, Collection<ICommandAccess> proposals) {
	if (!JavaModelUtil.is17OrHigher(context.getCompilationUnit().getJavaProject()))
		return;

	ASTNode coveringNode= problem.getCoveringNode(context.getASTRoot());
	IMethodBinding methodBinding;
	if (coveringNode instanceof MethodInvocation) {
		methodBinding= ((MethodInvocation) coveringNode).resolveMethodBinding();
	} else if (coveringNode instanceof ClassInstanceCreation) {
		methodBinding= ((ClassInstanceCreation) coveringNode).resolveConstructorBinding();
	} else {
		return;
	}
	if (methodBinding == null)
		return;
	
	String label= Messages.format(CorrectionMessages.VarargsWarningsSubProcessor_add_safevarargs_to_method_label, methodBinding.getName());

	ITypeBinding declaringType= methodBinding.getDeclaringClass();
	CompilationUnit astRoot= (CompilationUnit) coveringNode.getRoot();
	if (declaringType != null && declaringType.isFromSource()) {
		try {
			ICompilationUnit targetCu= ASTResolving.findCompilationUnitForBinding(context.getCompilationUnit(), astRoot, declaringType);
			if (targetCu != null) {
				AddSafeVarargsProposal proposal= new AddSafeVarargsProposal(label, targetCu, null, methodBinding.getMethodDeclaration(), IProposalRelevance.ADD_SAFEVARARGS);
				proposals.add(proposal);
			}
		} catch (JavaModelException e) {
			return;
		}
	}
}
 

private static void addNewFieldProposals(ICompilationUnit cu, CompilationUnit astRoot, ITypeBinding binding, ITypeBinding declaringTypeBinding, SimpleName simpleName, boolean isWriteAccess, Collection<ICommandAccess> proposals) throws JavaModelException {
	// new variables
	ICompilationUnit targetCU;
	ITypeBinding senderDeclBinding;
	if (binding != null) {
		senderDeclBinding= binding.getTypeDeclaration();
		targetCU= ASTResolving.findCompilationUnitForBinding(cu, astRoot, senderDeclBinding);
	} else { // binding is null for accesses without qualifier
		senderDeclBinding= declaringTypeBinding;
		targetCU= cu;
	}

	if (!senderDeclBinding.isFromSource() || targetCU == null) {
		return;
	}

	boolean mustBeConst= ASTResolving.isInsideModifiers(simpleName);

	addNewFieldForType(targetCU, binding, senderDeclBinding, simpleName, isWriteAccess, mustBeConst, proposals);

	if (binding == null && senderDeclBinding.isNested()) {
		ASTNode anonymDecl= astRoot.findDeclaringNode(senderDeclBinding);
		if (anonymDecl != null) {
			ITypeBinding bind= Bindings.getBindingOfParentType(anonymDecl.getParent());
			if (!bind.isAnonymous()) {
				addNewFieldForType(targetCU, bind, bind, simpleName, isWriteAccess, mustBeConst, proposals);
			}
		}
	}
}
 

public static TypeDeclaration createDeclarationForType(final ITypeBinding typeBinding) {
  if (typeBinding == null) {
    return null;
  }

  checkArgument(typeBinding.getTypeDeclaration() == typeBinding);
  checkArgument(!typeBinding.isArray());
  checkArgument(!typeBinding.isParameterizedType());
  checkArgument(!typeBinding.isTypeVariable());
  checkArgument(!typeBinding.isWildcardType());
  checkArgument(!typeBinding.isCapture());

  PackageInfoCache packageInfoCache = PackageInfoCache.get();

  ITypeBinding topLevelTypeBinding = toTopLevelTypeBinding(typeBinding);
  if (topLevelTypeBinding.isFromSource()) {
    // Let the PackageInfoCache know that this class is Source, otherwise it would have to rummage
    // around in the class path to figure it out and it might even come up with the wrong answer
    // for example if this class has also been globbed into some other library that is a
    // dependency of this one.
    PackageInfoCache.get().markAsSource(getBinaryNameFromTypeBinding(topLevelTypeBinding));
  }

  // Compute these first since they're reused in other calculations.
  String packageName =
      typeBinding.getPackage() == null ? null : typeBinding.getPackage().getName();
  boolean isAbstract = isAbstract(typeBinding);
  boolean isFinal = isFinal(typeBinding);

  Supplier<ImmutableMap<String, MethodDescriptor>> declaredMethods =
      () -> {
        ImmutableMap.Builder<String, MethodDescriptor> mapBuilder = ImmutableMap.builder();
        for (IMethodBinding methodBinding : typeBinding.getDeclaredMethods()) {
          MethodDescriptor methodDescriptor = createMethodDescriptor(methodBinding);
          mapBuilder.put(
              // TODO(b/33595109): Using the method declaration signature here is kind of iffy;
              // but needs to be done because parameterized types might make multiple
              // superinterface methods collide which are represented by JDT as different method
              // bindings but with the same signature, e.g.
              //   interface I<U, V extends Serializable> {
              //     void foo(U u);
              //     void foo(V v);
              //   }
              // When considering the type I<A,A>, there are two different method bindings
              // that describe the single method 'void foo(A a)' each with the respective
              // method declaration.
              methodDescriptor.getDeclarationDescriptor().getMethodSignature(), methodDescriptor);
        }
        return mapBuilder.build();
      };

  Supplier<ImmutableList<FieldDescriptor>> declaredFields =
      () ->
          Arrays.stream(typeBinding.getDeclaredFields())
              .map(JdtUtils::createFieldDescriptor)
              .collect(toImmutableList());

  JsEnumInfo jsEnumInfo = JsInteropUtils.getJsEnumInfo(typeBinding);

  return TypeDeclaration.newBuilder()
      .setClassComponents(getClassComponents(typeBinding))
      .setEnclosingTypeDeclaration(createDeclarationForType(typeBinding.getDeclaringClass()))
      .setInterfaceTypeDescriptorsFactory(
          () -> createTypeDescriptors(typeBinding.getInterfaces(), DeclaredTypeDescriptor.class))
      .setUnparameterizedTypeDescriptorFactory(() -> createDeclaredTypeDescriptor(typeBinding))
      .setHasAbstractModifier(isAbstract)
      .setKind(getKindFromTypeBinding(typeBinding))
      .setCapturingEnclosingInstance(capturesEnclosingInstance(typeBinding))
      .setFinal(isFinal)
      .setFunctionalInterface(typeBinding.getFunctionalInterfaceMethod() != null)
      .setJsFunctionInterface(JsInteropUtils.isJsFunction(typeBinding))
      .setAnnotatedWithFunctionalInterface(isAnnotatedWithFunctionalInterface(typeBinding))
      .setAnnotatedWithAutoValue(isAnnotatedWithAutoValue(typeBinding))
      .setJsType(JsInteropUtils.isJsType(typeBinding))
      .setJsEnumInfo(jsEnumInfo)
      .setNative(JsInteropUtils.isJsNativeType(typeBinding))
      .setAnonymous(typeBinding.isAnonymous())
      .setLocal(isLocal(typeBinding))
      .setSimpleJsName(getJsName(typeBinding))
      .setCustomizedJsNamespace(getJsNamespace(typeBinding, packageInfoCache))
      .setPackageName(packageName)
      .setSuperTypeDescriptorFactory(getSuperTypeFactory(jsEnumInfo != null, typeBinding))
      .setTypeParameterDescriptors(
          getTypeArgumentTypeDescriptors(typeBinding, TypeVariable.class))
      .setVisibility(getVisibility(typeBinding))
      .setDeclaredMethodDescriptorsFactory(declaredMethods)
      .setDeclaredFieldDescriptorsFactory(declaredFields)
      .setUnusableByJsSuppressed(JsInteropAnnotationUtils.isUnusableByJsSuppressed(typeBinding))
      .setDeprecated(isDeprecated(typeBinding))
      .build();
}
 

/**
 * @since 2.4
 */
protected void enhanceExecutable(StringBuilder fqn, String handleIdentifier, String[] path, JvmExecutable result, IMethodBinding method) {
	String name = method.getName();
	fqn.append(name);
	fqn.append('(');
	ITypeBinding[] parameterTypes = method.getParameterTypes();
	for (int i = 0; i < parameterTypes.length; i++) {
		if (i != 0)
			fqn.append(',');
		fqn.append(getQualifiedName(parameterTypes[i]));
	}
	fqn.append(')');
	result.internalSetIdentifier(fqn.toString());
	result.setSimpleName(name);
	setVisibility(result, method.getModifiers());
	result.setDeprecated(method.isDeprecated());
	if (parameterTypes.length > 0) {
		result.setVarArgs(method.isVarargs());
		String[] parameterNames = null;

		// If the method is derived from source, we can efficiently determine the parameter names now.
		//
		ITypeBinding declaringClass = method.getDeclaringClass();
		if (declaringClass.isFromSource()) {
			parameterNames = getParameterNamesFromSource(fqn, method);
		} else {
			// Use the key to determine the signature for the method.
			//
			SegmentSequence signaturex = getSignatureAsSegmentSequence(method);
			ParameterNameInitializer initializer = jdtCompliance.createParameterNameInitializer(method, workingCopyOwner, result, handleIdentifier, path, name, signaturex);
			((JvmExecutableImplCustom)result).setParameterNameInitializer(initializer);
		}

		setParameterNamesAndAnnotations(method, parameterTypes, parameterNames, result);
	}

	ITypeBinding[] exceptionTypes = method.getExceptionTypes();
	if (exceptionTypes.length > 0) {
		InternalEList<JvmTypeReference> exceptions = (InternalEList<JvmTypeReference>)result.getExceptions();
		for (ITypeBinding exceptionType : exceptionTypes) {
			exceptions.addUnique(createTypeReference(exceptionType));
		}
	}
}
 

public static void addIncompatibleReturnTypeProposals(IInvocationContext context, IProblemLocationCore problem,
		Collection<ChangeCorrectionProposal> proposals) throws JavaModelException {
	CompilationUnit astRoot= context.getASTRoot();
	ASTNode selectedNode= problem.getCoveringNode(astRoot);
	if (selectedNode == null) {
		return;
	}
	MethodDeclaration decl= ASTResolving.findParentMethodDeclaration(selectedNode);
	if (decl == null) {
		return;
	}
	IMethodBinding methodDeclBinding= decl.resolveBinding();
	if (methodDeclBinding == null) {
		return;
	}

	ITypeBinding returnType= methodDeclBinding.getReturnType();
	IMethodBinding overridden= Bindings.findOverriddenMethod(methodDeclBinding, false);
	if (overridden == null || overridden.getReturnType() == returnType) {
		return;
	}


	ICompilationUnit cu= context.getCompilationUnit();
	IMethodBinding methodDecl= methodDeclBinding.getMethodDeclaration();
	ITypeBinding overriddenReturnType= overridden.getReturnType();
	if (! JavaModelUtil.is50OrHigher(context.getCompilationUnit().getJavaProject())) {
		overriddenReturnType= overriddenReturnType.getErasure();
	}
	proposals.add(new TypeChangeCorrectionProposal(cu, methodDecl, astRoot, overriddenReturnType, false, IProposalRelevance.CHANGE_RETURN_TYPE));

	ICompilationUnit targetCu= cu;

	IMethodBinding overriddenDecl= overridden.getMethodDeclaration();
	ITypeBinding overridenDeclType= overriddenDecl.getDeclaringClass();

	if (overridenDeclType.isFromSource()) {
		targetCu= ASTResolving.findCompilationUnitForBinding(cu, astRoot, overridenDeclType);
		if (targetCu != null && ASTResolving.isUseableTypeInContext(returnType, overriddenDecl, false)) {
			TypeChangeCorrectionProposal proposal= new TypeChangeCorrectionProposal(targetCu, overriddenDecl, astRoot, returnType, false, IProposalRelevance.CHANGE_RETURN_TYPE_OF_OVERRIDDEN);
			if (overridenDeclType.isInterface()) {
				proposal.setDisplayName(Messages.format(CorrectionMessages.TypeMismatchSubProcessor_changereturnofimplemented_description, BasicElementLabels.getJavaElementName(overriddenDecl.getName())));
			} else {
				proposal.setDisplayName(Messages.format(CorrectionMessages.TypeMismatchSubProcessor_changereturnofoverridden_description, BasicElementLabels.getJavaElementName(overriddenDecl.getName())));
			}
			proposals.add(proposal);
		}
	}
}
 

private static void addNewMethodProposals(ICompilationUnit cu, CompilationUnit astRoot, Expression sender,
		List<Expression> arguments, boolean isSuperInvocation, ASTNode invocationNode, String methodName,
		Collection<ChangeCorrectionProposal> proposals) throws JavaModelException {
	ITypeBinding nodeParentType= Bindings.getBindingOfParentType(invocationNode);
	ITypeBinding binding= null;
	if (sender != null) {
		binding= sender.resolveTypeBinding();
	} else {
		binding= nodeParentType;
		if (isSuperInvocation && binding != null) {
			binding= binding.getSuperclass();
		}
	}
	if (binding != null && binding.isFromSource()) {
		ITypeBinding senderDeclBinding= binding.getTypeDeclaration();

		ICompilationUnit targetCU= ASTResolving.findCompilationUnitForBinding(cu, astRoot, senderDeclBinding);
		if (targetCU != null) {
			String label;
			ITypeBinding[] parameterTypes= getParameterTypes(arguments);
			if (parameterTypes != null) {
				String sig = org.eclipse.jdt.ls.core.internal.corrections.ASTResolving.getMethodSignature(methodName, parameterTypes, false);
				boolean is18OrHigher= JavaModelUtil.is18OrHigher(targetCU.getJavaProject());

				boolean isSenderBindingInterface= senderDeclBinding.isInterface();
				if (nodeParentType == senderDeclBinding) {
					label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_createmethod_description, sig);
				} else {
					label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_createmethod_other_description, new Object[] { sig, BasicElementLabels.getJavaElementName(senderDeclBinding.getName()) } );
				}
				if (is18OrHigher || !isSenderBindingInterface
						|| (nodeParentType != senderDeclBinding && (!(sender instanceof SimpleName) || !((SimpleName) sender).getIdentifier().equals(senderDeclBinding.getName())))) {
					proposals.add(new NewMethodCorrectionProposal(label, targetCU, invocationNode, arguments,
							senderDeclBinding, IProposalRelevance.CREATE_METHOD));
				}

				if (senderDeclBinding.isNested() && cu.equals(targetCU) && sender == null && Bindings.findMethodInHierarchy(senderDeclBinding, methodName, (ITypeBinding[]) null) == null) { // no covering method
					ASTNode anonymDecl= astRoot.findDeclaringNode(senderDeclBinding);
					if (anonymDecl != null) {
						senderDeclBinding= Bindings.getBindingOfParentType(anonymDecl.getParent());
						isSenderBindingInterface= senderDeclBinding.isInterface();
						if (!senderDeclBinding.isAnonymous()) {
							if (is18OrHigher || !isSenderBindingInterface) {
								String[] args = new String[] { sig,
										org.eclipse.jdt.ls.core.internal.corrections.ASTResolving.getTypeSignature(senderDeclBinding) };
								label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_createmethod_other_description, args);
								proposals.add(new NewMethodCorrectionProposal(label, targetCU, invocationNode,
										arguments, senderDeclBinding, IProposalRelevance.CREATE_METHOD));
							}
						}
					}
				}
			}
		}
	}
}
 

public static void addIncompatibleReturnTypeProposals(IInvocationContext context, IProblemLocation problem, Collection<ICommandAccess> proposals) throws JavaModelException {
	CompilationUnit astRoot= context.getASTRoot();
	ASTNode selectedNode= problem.getCoveringNode(astRoot);
	if (selectedNode == null) {
		return;
	}
	MethodDeclaration decl= ASTResolving.findParentMethodDeclaration(selectedNode);
	if (decl == null) {
		return;
	}
	IMethodBinding methodDeclBinding= decl.resolveBinding();
	if (methodDeclBinding == null) {
		return;
	}

	ITypeBinding returnType= methodDeclBinding.getReturnType();
	IMethodBinding overridden= Bindings.findOverriddenMethod(methodDeclBinding, false);
	if (overridden == null || overridden.getReturnType() == returnType) {
		return;
	}


	ICompilationUnit cu= context.getCompilationUnit();
	IMethodBinding methodDecl= methodDeclBinding.getMethodDeclaration();
	ITypeBinding overriddenReturnType= overridden.getReturnType();
	if (! JavaModelUtil.is50OrHigher(context.getCompilationUnit().getJavaProject())) {
		overriddenReturnType= overriddenReturnType.getErasure();
	}
	proposals.add(new TypeChangeCorrectionProposal(cu, methodDecl, astRoot, overriddenReturnType, false, IProposalRelevance.CHANGE_RETURN_TYPE));

	ICompilationUnit targetCu= cu;

	IMethodBinding overriddenDecl= overridden.getMethodDeclaration();
	ITypeBinding overridenDeclType= overriddenDecl.getDeclaringClass();

	if (overridenDeclType.isFromSource()) {
		targetCu= ASTResolving.findCompilationUnitForBinding(cu, astRoot, overridenDeclType);
		if (targetCu != null && ASTResolving.isUseableTypeInContext(returnType, overriddenDecl, false)) {
			TypeChangeCorrectionProposal proposal= new TypeChangeCorrectionProposal(targetCu, overriddenDecl, astRoot, returnType, false, IProposalRelevance.CHANGE_RETURN_TYPE_OF_OVERRIDDEN);
			if (overridenDeclType.isInterface()) {
				proposal.setDisplayName(Messages.format(CorrectionMessages.TypeMismatchSubProcessor_changereturnofimplemented_description, BasicElementLabels.getJavaElementName(overriddenDecl.getName())));
			} else {
				proposal.setDisplayName(Messages.format(CorrectionMessages.TypeMismatchSubProcessor_changereturnofoverridden_description, BasicElementLabels.getJavaElementName(overriddenDecl.getName())));
			}
			proposals.add(proposal);
		}
	}
}
 

private static void addNewMethodProposals(ICompilationUnit cu, CompilationUnit astRoot, Expression sender, List<Expression> arguments, boolean isSuperInvocation, ASTNode invocationNode, String methodName, Collection<ICommandAccess> proposals) throws JavaModelException {
	ITypeBinding nodeParentType= Bindings.getBindingOfParentType(invocationNode);
	ITypeBinding binding= null;
	if (sender != null) {
		binding= sender.resolveTypeBinding();
	} else {
		binding= nodeParentType;
		if (isSuperInvocation && binding != null) {
			binding= binding.getSuperclass();
		}
	}
	if (binding != null && binding.isFromSource()) {
		ITypeBinding senderDeclBinding= binding.getTypeDeclaration();

		ICompilationUnit targetCU= ASTResolving.findCompilationUnitForBinding(cu, astRoot, senderDeclBinding);
		if (targetCU != null) {
			String label;
			Image image;
			ITypeBinding[] parameterTypes= getParameterTypes(arguments);
			if (parameterTypes != null) {
				String sig= ASTResolving.getMethodSignature(methodName, parameterTypes, false);

				if (ASTResolving.isUseableTypeInContext(parameterTypes, senderDeclBinding, false)) {
					if (nodeParentType == senderDeclBinding) {
						label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_createmethod_description, sig);
						image= JavaPluginImages.get(JavaPluginImages.IMG_MISC_PRIVATE);
					} else {
						label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_createmethod_other_description, new Object[] { sig, BasicElementLabels.getJavaElementName(senderDeclBinding.getName()) } );
						image= JavaPluginImages.get(JavaPluginImages.IMG_MISC_PUBLIC);
					}
					proposals.add(new NewMethodCorrectionProposal(label, targetCU, invocationNode, arguments, senderDeclBinding, IProposalRelevance.CREATE_METHOD, image));
				}
				if (senderDeclBinding.isNested() && cu.equals(targetCU) && sender == null && Bindings.findMethodInHierarchy(senderDeclBinding, methodName, (ITypeBinding[]) null) == null) { // no covering method
					ASTNode anonymDecl= astRoot.findDeclaringNode(senderDeclBinding);
					if (anonymDecl != null) {
						senderDeclBinding= Bindings.getBindingOfParentType(anonymDecl.getParent());
						if (!senderDeclBinding.isAnonymous() && ASTResolving.isUseableTypeInContext(parameterTypes, senderDeclBinding, false)) {
							String[] args= new String[] { sig, ASTResolving.getTypeSignature(senderDeclBinding) };
							label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_createmethod_other_description, args);
							image= JavaPluginImages.get(JavaPluginImages.IMG_MISC_PROTECTED);
							proposals.add(new NewMethodCorrectionProposal(label, targetCU, invocationNode, arguments, senderDeclBinding, IProposalRelevance.CREATE_METHOD, image));
						}
					}
				}
			}
		}
	}
}