BindingManager.java 文件源码

/**
 * Return the generic type if any
 */
public TypeElement getGenericType(TypeMirror typeMirror) {
    return typeMirror.accept(new SimpleTypeVisitor6<TypeElement, Void>() {
        @Override
        public TypeElement visitDeclared(DeclaredType declaredType, Void v) {
            TypeElement genericTypeElement = null;
            TypeElement typeElement = (TypeElement) declaredType.asElement();
            if (parcelClass != null && typeUtils.isAssignable(typeElement.asType(), listTypeMirror)) {
                List<? extends TypeMirror> typeArguments = declaredType.getTypeArguments();
                if (!typeArguments.isEmpty()) {
                    for (TypeMirror genericType : typeArguments) {
                        if (genericType instanceof WildcardType) {
                            WildcardType wildcardType = (WildcardType) genericType;
                            TypeMirror extendsType = wildcardType.getExtendsBound();
                            if (extendsType != null) {
                                typeElement = elementUtils.getTypeElement(extendsType.toString());
                                if (typeElement.getAnnotation(parcelClass) != null) {
                                    genericTypeElement = typeElement;
                                    break;
                                }

                            }
                        } else {
                            typeElement = elementUtils.getTypeElement(genericType.toString());
                            if (typeElement.getAnnotation(parcelClass) != null) {
                                genericTypeElement = typeElement;
                                break;
                            }
                        }
                    }
                }
            }
            return genericTypeElement;
        }
    }, null);
}