Struct NSXMLNode

#[repr(C)]
pub struct NSXMLNode { /* private fields */ }

Available on crate feature NSXMLNode only.

The basic unit of an XML document.

See also Apple’s documentation

Implementations

impl NSXMLNode

pub unsafe fn init(this: Allocated<Self>) -> Retained<Self>

pub unsafe fn initWithKind( this: Allocated<Self>, kind: NSXMLNodeKind, ) -> Retained<Self>

Invokes

 initWithKind:options:

with options set to NSXMLNodeOptionsNone

pub unsafe fn initWithKind_options( this: Allocated<Self>, kind: NSXMLNodeKind, options: NSXMLNodeOptions, ) -> Retained<Self>

Available on crate feature NSXMLNodeOptions only.

Inits a node with fidelity options as description NSXMLNodeOptions.h

pub unsafe fn document() -> Retained<AnyObject>

Returns an empty document.

pub unsafe fn documentWithRootElement( element: &NSXMLElement, ) -> Retained<AnyObject>

Available on crate feature NSXMLElement only.

Returns a document

Parameter element: The document’s root node.

pub unsafe fn elementWithName(name: &NSString) -> Retained<AnyObject>

Available on crate feature NSString only.

Returns an element < name> < /name> .

pub unsafe fn elementWithName_URI( name: &NSString, uri: &NSString, ) -> Retained<AnyObject>

Available on crate feature NSString only.

Returns an element whose full QName is specified.

pub unsafe fn elementWithName_stringValue( name: &NSString, string: &NSString, ) -> Retained<AnyObject>

Available on crate feature NSString only.

Returns an element with a single text node child < name>string < /name> .

pub unsafe fn elementWithName_children_attributes( name: &NSString, children: Option<&NSArray<NSXMLNode>>, attributes: Option<&NSArray<NSXMLNode>>, ) -> Retained<AnyObject>

Available on crate features NSArray and NSString only.

Returns an element children and attributes < name attr1=“foo” attr2=“bar”> < – child1 –>child2 < /name> .

pub unsafe fn attributeWithName_stringValue( name: &NSString, string_value: &NSString, ) -> Retained<AnyObject>

Available on crate feature NSString only.

Returns an attribute name=“stringValue” .

pub unsafe fn attributeWithName_URI_stringValue( name: &NSString, uri: &NSString, string_value: &NSString, ) -> Retained<AnyObject>

Available on crate feature NSString only.

Returns an attribute whose full QName is specified.

pub unsafe fn namespaceWithName_stringValue( name: &NSString, string_value: &NSString, ) -> Retained<AnyObject>

Available on crate feature NSString only.

Returns a namespace xmlns:name=“stringValue” .

pub unsafe fn processingInstructionWithName_stringValue( name: &NSString, string_value: &NSString, ) -> Retained<AnyObject>

Available on crate feature NSString only.

Returns a processing instruction < ?name stringValue> .

pub unsafe fn commentWithStringValue( string_value: &NSString, ) -> Retained<AnyObject>

Available on crate feature NSString only.

Returns a comment < –stringValue–> .

pub unsafe fn textWithStringValue( string_value: &NSString, ) -> Retained<AnyObject>

Available on crate feature NSString only.

Returns a text node.

pub unsafe fn DTDNodeWithXMLString( string: &NSString, ) -> Option<Retained<AnyObject>>

Available on crate feature NSString only.

Returns an element, attribute, entity, or notation DTD node based on the full XML string.

pub unsafe fn kind(&self) -> NSXMLNodeKind

Returns an element, attribute, entity, or notation DTD node based on the full XML string.

pub unsafe fn name(&self) -> Option<Retained<NSString>>

Available on crate feature NSString only.

Sets the nodes name. Applicable for element, attribute, namespace, processing-instruction, document type declaration, element declaration, attribute declaration, entity declaration, and notation declaration.

pub unsafe fn setName(&self, name: Option<&NSString>)

Available on crate feature NSString only.

Setter for name.

pub unsafe fn objectValue(&self) -> Option<Retained<AnyObject>>

Sets the content of the node. Setting the objectValue removes all existing children including processing instructions and comments. Setting the object value on an element creates a single text node child.

pub unsafe fn setObjectValue(&self, object_value: Option<&AnyObject>)

Setter for objectValue.

pub unsafe fn stringValue(&self) -> Option<Retained<NSString>>

Available on crate feature NSString only.

Sets the content of the node. Setting the stringValue removes all existing children including processing instructions and comments. Setting the string value on an element creates a single text node child. The getter returns the string value of the node, which may be either its content or child text nodes, depending on the type of node. Elements are recursed and text nodes concatenated in document order with no intervening spaces.

pub unsafe fn setStringValue(&self, string_value: Option<&NSString>)

Available on crate feature NSString only.

Setter for stringValue.

pub unsafe fn setStringValue_resolvingEntities( &self, string: &NSString, resolve: bool, )

Available on crate feature NSString only.

Sets the content as with

 setStringValue:

, but when “resolve” is true, character references, predefined entities and user entities available in the document’s dtd are resolved. Entities not available in the dtd remain in their entity form.

pub unsafe fn index(&self) -> NSUInteger

A node’s index amongst its siblings.

pub unsafe fn level(&self) -> NSUInteger

The depth of the node within the tree. Documents and standalone nodes are level 0.

pub unsafe fn rootDocument(&self) -> Option<Retained<NSXMLDocument>>

Available on crate feature NSXMLDocument only.

The encompassing document or nil.

pub unsafe fn parent(&self) -> Option<Retained<NSXMLNode>>

The parent of this node. Documents and standalone Nodes have a nil parent; there is not a 1-to-1 relationship between parent and children, eg a namespace cannot be a child but has a parent element.

pub unsafe fn childCount(&self) -> NSUInteger

The amount of children, relevant for documents, elements, and document type declarations. Use this instead of [[self children] count].

pub unsafe fn children(&self) -> Option<Retained<NSArray<NSXMLNode>>>

Available on crate feature NSArray only.

An immutable array of child nodes. Relevant for documents, elements, and document type declarations.

pub unsafe fn childAtIndex( &self, index: NSUInteger, ) -> Option<Retained<NSXMLNode>>

Returns the child node at a particular index.

pub unsafe fn previousSibling(&self) -> Option<Retained<NSXMLNode>>

Returns the previous sibling, or nil if there isn’t one.

pub unsafe fn nextSibling(&self) -> Option<Retained<NSXMLNode>>

Returns the next sibling, or nil if there isn’t one.

pub unsafe fn previousNode(&self) -> Option<Retained<NSXMLNode>>

Returns the previous node in document order. This can be used to walk the tree backwards.

pub unsafe fn nextNode(&self) -> Option<Retained<NSXMLNode>>

Returns the next node in document order. This can be used to walk the tree forwards.

pub unsafe fn detach(&self)

Detaches this node from its parent.

pub unsafe fn XPath(&self) -> Option<Retained<NSString>>

Available on crate feature NSString only.

Returns the XPath to this node, for example foo/bar[2]/baz.

pub unsafe fn localName(&self) -> Option<Retained<NSString>>

Available on crate feature NSString only.

Returns the local name bar if this attribute or element’s name is foo:bar

pub unsafe fn prefix(&self) -> Option<Retained<NSString>>

Available on crate feature NSString only.

Returns the prefix foo if this attribute or element’s name if foo:bar

pub unsafe fn URI(&self) -> Option<Retained<NSString>>

Available on crate feature NSString only.

Set the URI of this element, attribute, or document. For documents it is the URI of document origin. Getter returns the URI of this element, attribute, or document. For documents it is the URI of document origin and is automatically set when using initWithContentsOfURL.

pub unsafe fn setURI(&self, uri: Option<&NSString>)

Available on crate feature NSString only.

Setter for URI.

pub unsafe fn localNameForName(name: &NSString) -> Retained<NSString>

Available on crate feature NSString only.

Returns the local name bar in foo:bar.

pub unsafe fn prefixForName(name: &NSString) -> Option<Retained<NSString>>

Available on crate feature NSString only.

Returns the prefix foo in the name foo:bar.

pub unsafe fn predefinedNamespaceForPrefix( name: &NSString, ) -> Option<Retained<NSXMLNode>>

Available on crate feature NSString only.

Returns the namespace belonging to one of the predefined namespaces xml, xs, or xsi

pub unsafe fn description(&self) -> Retained<NSString>

Available on crate feature NSString only.

Used for debugging. May give more information than XMLString.

pub unsafe fn XMLString(&self) -> Retained<NSString>

Available on crate feature NSString only.

The representation of this node as it would appear in an XML document.

pub unsafe fn XMLStringWithOptions( &self, options: NSXMLNodeOptions, ) -> Retained<NSString>

Available on crate features NSString and NSXMLNodeOptions only.

The representation of this node as it would appear in an XML document, with various output options available.

pub unsafe fn canonicalXMLStringPreservingComments( &self, comments: bool, ) -> Retained<NSString>

Available on crate feature NSString only.

W3 canonical form (http://www.w3.org/TR/xml-c14n). The input option NSXMLNodePreserveWhitespace should be set for true canonical form.

pub unsafe fn nodesForXPath_error( &self, xpath: &NSString, ) -> Result<Retained<NSArray<NSXMLNode>>, Retained<NSError>>

Available on crate features NSArray and NSError and NSString only.

Returns the nodes resulting from applying an XPath to this node using the node as the context item (“.”). normalizeAdjacentTextNodesPreservingCDATA:NO should be called if there are adjacent text nodes since they are not allowed under the XPath/XQuery Data Model.

Returns: An array whose elements are a kind of NSXMLNode.

pub unsafe fn objectsForXQuery_constants_error( &self, xquery: &NSString, constants: Option<&NSDictionary<NSString, AnyObject>>, ) -> Result<Retained<NSArray>, Retained<NSError>>

Available on crate features NSArray and NSDictionary and NSError and NSString only.

Returns the objects resulting from applying an XQuery to this node using the node as the context item (“.”). Constants are a name-value dictionary for constants declared “external” in the query. normalizeAdjacentTextNodesPreservingCDATA:NO should be called if there are adjacent text nodes since they are not allowed under the XPath/XQuery Data Model.

Returns: An array whose elements are kinds of NSArray, NSData, NSDate, NSNumber, NSString, NSURL, or NSXMLNode.

pub unsafe fn objectsForXQuery_error( &self, xquery: &NSString, ) -> Result<Retained<NSArray>, Retained<NSError>>

Available on crate features NSArray and NSError and NSString only.

impl NSXMLNode

Methods declared on superclass NSObject.

pub unsafe fn new() -> Retained<Self>

Methods from Deref<Target = NSObject>

pub fn doesNotRecognizeSelector(&self, sel: Sel) -> !

Handle messages the object doesn’t recognize.

See Apple’s documentation for details.

Methods from Deref<Target = AnyObject>

pub fn class(&self) -> &'static AnyClass

Dynamically find the class of this object.

Example

Check that an instance of NSObject has the precise class NSObject.

use objc2::ClassType;
use objc2::runtime::NSObject;

let obj = NSObject::new();
assert_eq!(obj.class(), NSObject::class());

pub unsafe fn get_ivar<T>(&self, name: &str) -> &T

where T: Encode,

👎Deprecated: this is difficult to use correctly, use Ivar::load instead.

Use Ivar::load instead.

Safety

The object must have an instance variable with the given name, and it must be of type T.

See Ivar::load_ptr for details surrounding this.

pub fn downcast_ref<T>(&self) -> Option<&T>

where T: DowncastTarget,

Attempt to downcast the object to a class of type T.

This is the reference-variant. Use Retained::downcast if you want to convert a retained object to another type.

Mutable classes

Some classes have immutable and mutable variants, such as NSString and NSMutableString.

When some Objective-C API signature says it gives you an immutable class, it generally expects you to not mutate that, even though it may technically be mutable “under the hood”.

So using this method to convert a NSString to a NSMutableString, while not unsound, is generally frowned upon unless you created the string yourself, or the API explicitly documents the string to be mutable.

See Apple’s documentation on mutability and on isKindOfClass: for more details.

Generic classes

Objective-C generics are called “lightweight generics”, and that’s because they aren’t exposed in the runtime. This makes it impossible to safely downcast to generic collections, so this is disallowed by this method.

You can, however, safely downcast to generic collections where all the type-parameters are AnyObject.

Panics

This works internally by calling isKindOfClass:. That means that the object must have the instance method of that name, and an exception will be thrown (if CoreFoundation is linked) or the process will abort if that is not the case. In the vast majority of cases, you don’t need to worry about this, since both root objects NSObject and NSProxy implement this method.

Examples

Cast an NSString back and forth from NSObject.

use objc2::rc::Retained;
use objc2_foundation::{NSObject, NSString};

let obj: Retained<NSObject> = NSString::new().into_super();
let string = obj.downcast_ref::<NSString>().unwrap();
// Or with `downcast`, if we do not need the object afterwards
let string = obj.downcast::<NSString>().unwrap();

Try (and fail) to cast an NSObject to an NSString.

use objc2_foundation::{NSObject, NSString};

let obj = NSObject::new();
assert!(obj.downcast_ref::<NSString>().is_none());

Try to cast to an array of strings.

use objc2_foundation::{NSArray, NSObject, NSString};

let arr = NSArray::from_retained_slice(&[NSObject::new()]);
// This is invalid and doesn't type check.
let arr = arr.downcast_ref::<NSArray<NSString>>();

This fails to compile, since it would require enumerating over the array to ensure that each element is of the desired type, which is a performance pitfall.

Downcast when processing each element instead.

use objc2_foundation::{NSArray, NSObject, NSString};

let arr = NSArray::from_retained_slice(&[NSObject::new()]);

for elem in arr {
    if let Some(data) = elem.downcast_ref::<NSString>() {
        // handle `data`
    }
}

Trait Implementations

impl AsRef<AnyObject> for NSXMLNode

fn as_ref(&self) -> &AnyObject

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<NSObject> for NSXMLNode

fn as_ref(&self) -> &NSObject

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<NSXMLNode> for NSXMLDTD

Available on crate feature NSXMLDTD only.

fn as_ref(&self) -> &NSXMLNode

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<NSXMLNode> for NSXMLDTDNode

Available on crate feature NSXMLDTDNode only.

fn as_ref(&self) -> &NSXMLNode

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<NSXMLNode> for NSXMLDocument

Available on crate feature NSXMLDocument only.

fn as_ref(&self) -> &NSXMLNode

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<NSXMLNode> for NSXMLElement

Available on crate feature NSXMLElement only.

fn as_ref(&self) -> &NSXMLNode

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<NSXMLNode> for NSXMLNode

fn as_ref(&self) -> &Self

Converts this type into a shared reference of the (usually inferred) input type.

impl Borrow<AnyObject> for NSXMLNode

fn borrow(&self) -> &AnyObject

Immutably borrows from an owned value.

impl Borrow<NSObject> for NSXMLNode

fn borrow(&self) -> &NSObject

Immutably borrows from an owned value.

impl Borrow<NSXMLNode> for NSXMLDTD

Available on crate feature NSXMLDTD only.

fn borrow(&self) -> &NSXMLNode

Immutably borrows from an owned value.

impl Borrow<NSXMLNode> for NSXMLDTDNode

Available on crate feature NSXMLDTDNode only.

fn borrow(&self) -> &NSXMLNode

Immutably borrows from an owned value.

impl Borrow<NSXMLNode> for NSXMLDocument

Available on crate feature NSXMLDocument only.

fn borrow(&self) -> &NSXMLNode

Immutably borrows from an owned value.

impl Borrow<NSXMLNode> for NSXMLElement

Available on crate feature NSXMLElement only.

fn borrow(&self) -> &NSXMLNode

Immutably borrows from an owned value.

impl ClassType for NSXMLNode

const NAME: &'static str = "NSXMLNode"

The name of the Objective-C class that this type represents.

type Super = NSObject

The superclass of this class.

type ThreadKind = <<NSXMLNode as ClassType>::Super as ClassType>::ThreadKind

Whether the type can be used from any thread, or from only the main thread.

fn class() -> &'static AnyClass

Get a reference to the Objective-C class that this type represents.

fn as_super(&self) -> &Self::Super

Get an immutable reference to the superclass.

impl CopyingHelper for NSXMLNode

Available on crate feature NSObject only.

type Result = NSXMLNode

The immutable counterpart of the type, or Self if the type has no immutable counterpart.

impl Debug for NSXMLNode

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Deref for NSXMLNode

type Target = NSObject

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl Hash for NSXMLNode

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Message for NSXMLNode

fn retain(&self) -> Retained<Self>

where Self: Sized,

Increment the reference count of the receiver.

impl NSCopying for NSXMLNode

Available on crate feature NSObject only.

fn copy(&self) -> Retained<Self::Result>

where Self: Sized + Message + CopyingHelper,

Returns a new instance that’s a copy of the receiver.

unsafe fn copyWithZone(&self, zone: *mut NSZone) -> Retained<Self::Result>

where Self: Sized + Message + CopyingHelper,

Returns a new instance that’s a copy of the receiver.

impl NSObjectProtocol for NSXMLNode

fn isEqual(&self, other: Option<&AnyObject>) -> bool

where Self: Sized + Message,

Check whether the object is equal to an arbitrary other object.

fn hash(&self) -> usize

where Self: Sized + Message,

An integer that can be used as a table address in a hash table structure.

fn isKindOfClass(&self, cls: &AnyClass) -> bool

where Self: Sized + Message,

Check if the object is an instance of the class, or one of its subclasses.

fn is_kind_of<T>(&self) -> bool

where T: ClassType, Self: Sized + Message,

👎Deprecated: use isKindOfClass directly, or cast your objects with AnyObject::downcast_ref

Check if the object is an instance of the class type, or one of its subclasses.

fn isMemberOfClass(&self, cls: &AnyClass) -> bool

where Self: Sized + Message,

Check if the object is an instance of a specific class, without checking subclasses.

fn respondsToSelector(&self, aSelector: Sel) -> bool

where Self: Sized + Message,

Check whether the object implements or inherits a method with the given selector.

fn conformsToProtocol(&self, aProtocol: &AnyProtocol) -> bool

where Self: Sized + Message,

Check whether the object conforms to a given protocol.

fn description(&self) -> Retained<NSObject>

where Self: Sized + Message,

A textual representation of the object.

fn debugDescription(&self) -> Retained<NSObject>

where Self: Sized + Message,

A textual representation of the object to use when debugging.

fn isProxy(&self) -> bool

where Self: Sized + Message,

Check whether the receiver is a subclass of the NSProxy root class instead of the usual NSObject.

fn retainCount(&self) -> usize

where Self: Sized + Message,

The reference count of the object.

impl PartialEq for NSXMLNode

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl RefEncode for NSXMLNode

const ENCODING_REF: Encoding = <NSObject as ::objc2::RefEncode>::ENCODING_REF

The Objective-C type-encoding for a reference of this type.

impl DowncastTarget for NSXMLNode

impl Eq for NSXMLNode