Examples of javax.lang.model.type.DeclaredType

javax.lang.model.type.DeclaredType
Represents a declared type, either a class type or an interface type. This includes parameterized types such as {@code java.util.Set}as well as raw types.
While a {@code TypeElement} represents a class or interfaceelement, a {@code DeclaredType} represents a classor interface type, the latter being a use (or invocation) of the former. See {@link TypeElement} for more on this distinction.
The supertypes (both class and interface types) of a declared type may be found using the {@link Types#directSupertypes(TypeMirror)} method. This returns thesupertypes with any type arguments substituted in. @author Joseph D. Darcy @author Scott Seligman @author Peter von der Ahé @see TypeElement @since 1.6

  private Set<Class<?>> wrapperTypesUsedInCollections(ExecutableElement method) {
    TypeElement javaUtilCollection =
        processingEnv.getElementUtils().getTypeElement(Collection.class.getName());
    ImmutableSet.Builder<Class<?>> usedInCollections = ImmutableSet.builder();
    for (Class<?> wrapper : Primitives.allWrapperTypes()) {
      DeclaredType collectionOfWrapper =
          typeUtils.getDeclaredType(javaUtilCollection, getTypeMirror(wrapper));
      for (VariableElement parameter : method.getParameters()) {
        if (typeUtils.isAssignable(parameter.asType(), collectionOfWrapper)) {
          usedInCollections.add(wrapper);
          break;

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    registerAllowedTypesForBuiltInConstraint( annotationType, asMirrors( typeNames ) );
  }


  private void registerAllowedTypesForBuiltInConstraint(String annotationType, List<TypeMirror> supportedTypes) {


    DeclaredType annotation = annotationApiHelper.getDeclaredTypeByName( annotationType );


    if ( annotation == null ) {
      return;
    }
    Name key = getName( annotation );

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    public Set<? extends Element> getElementsAnnotatedWith(TypeElement a) {
        Set<Element> result = Collections.emptySet();
        if (a.getKind() != ElementKind.ANNOTATION_TYPE)
            throw new IllegalArgumentException(NOT_AN_ANNOTATION_TYPE + a);


        DeclaredType annotationTypeElement;
        TypeMirror tm = a.asType();
        if ( tm instanceof DeclaredType )
            annotationTypeElement = (DeclaredType) a.asType();
        else
            throw new AssertionError("Bad implementation type for " + tm);

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    }


    public Map<MethodSymbol, Attribute> getElementValuesWithDefaults(
                                                        AnnotationMirror a) {
        Attribute.Compound anno = cast(Attribute.Compound.class, a);
        DeclaredType annotype = a.getAnnotationType();
        Map<MethodSymbol, Attribute> valmap = anno.getElementValues();


        for (ExecutableElement ex :
                 methodsIn(annotype.asElement().getEnclosedElements())) {
            MethodSymbol meth = (MethodSymbol) ex;
            Attribute defaultValue = meth.getDefaultValue();
            if (defaultValue != null && !valmap.containsKey(meth)) {
                valmap.put(meth, defaultValue);
            }

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    static class MyProcessor extends AbstractProcessor {
        void test(TypeElement element, boolean fbound) {
            TypeParameterElement tpe = element.getTypeParameters().iterator().next();
            tpe.getBounds().getClass();
            if (fbound) {
                DeclaredType type = (DeclaredType)tpe.getBounds().get(0);
                if (type.asElement() != element)
                    throw error("%s != %s", type.asElement(), element);
                TypeVariable tv = (TypeVariable)type.getTypeArguments().get(0);
                if (tv.asElement() != tpe)
                    throw error("%s != %s", tv.asElement(), tpe);
            }
        }

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            System.out.println();
        }
    }


    void testParseType(TypeElement clazz) {
        DeclaredType type = (DeclaredType)task.parseType("List<String>", clazz);
        for (Element member : elements.getAllMembers((TypeElement)type.asElement())) {
            TypeMirror mt = types.asMemberOf(type, member);
            System.out.format("%s : %s -> %s%n", member.getSimpleName(), member.asType(), mt);
        }
    }

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        String name;
        String packageName;
        TypeElement typeElement;
        String qualifiedName;


        DeclaredType declaredType = mirror.getKind() == TypeKind.DECLARED ? (DeclaredType) mirror : null;


        if ( declaredType != null ) {
            isEnumType = declaredType.asElement().getKind() == ElementKind.ENUM;
            isInterface = declaredType.asElement().getKind() == ElementKind.INTERFACE;
            name = declaredType.asElement().getSimpleName().toString();


            typeElement = declaredType.asElement().accept( new TypeElementRetrievalVisitor(), null );


            if ( typeElement != null ) {
                packageName = elementUtils.getPackageOf( typeElement ).getQualifiedName().toString();
                qualifiedName = typeElement.getQualifiedName().toString();
            }

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    private List<Type> getTypeParameters(TypeMirror mirror) {
        if ( mirror.getKind() != TypeKind.DECLARED ) {
            return java.util.Collections.emptyList();
        }


        DeclaredType declaredType = (DeclaredType) mirror;
        List<Type> typeParameters = new ArrayList<Type>( declaredType.getTypeArguments().size() );


        for ( TypeMirror typeParameter : declaredType.getTypeArguments() ) {
            typeParameters.add( getType( typeParameter ) );
        }


        return typeParameters;
    }

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    private Type getImplementationType(TypeMirror mirror) {
        if ( mirror.getKind() != TypeKind.DECLARED ) {
            return null;
        }


        DeclaredType declaredType = (DeclaredType) mirror;


        Type implementationType = implementationTypes.get(
            ( (TypeElement) declaredType.asElement() ).getQualifiedName()
                .toString()
        );


        if ( implementationType != null ) {
            return new Type(
                typeUtils,
                elementUtils,
                typeUtils.getDeclaredType(
                    implementationType.getTypeElement(),
                    declaredType.getTypeArguments().toArray( new TypeMirror[] { } )
                ),
                implementationType.getTypeElement(),
                getTypeParameters( mirror ),
                null,
                implementationType.getPackageName(),

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        @Override
        public Boolean visitDeclared(DeclaredType t, TypeMirror p) {
            // its a match when: 1) same kind of type, name is equals, nr of type args are the same
            // (type args are checked later).
            if ( p.getKind() == TypeKind.DECLARED ) {
                DeclaredType t1 = (DeclaredType) p;
                if ( assignabilityMatches( t, t1 )
                    && t.getTypeArguments().size() == t1.getTypeArguments().size() ) {
                    for ( int i = 0; i < t.getTypeArguments().size(); i++ ) {
                        if ( !t.getTypeArguments().get( i ).accept( this, t1.getTypeArguments().get( i ) ) ) {
                            return Boolean.FALSE;
                        }
                    }
                    return Boolean.TRUE;
                }

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