Struct libxml::xpath::Context [−][src]
An XPath context
Implementations
impl Context
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pub fn new(doc: &Document) -> Result<Context, ()>
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create the xpath context for a document
pub fn as_ptr(&self) -> xmlXPathContextPtr
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Returns the raw libxml2 context pointer behind the struct
pub fn from_node(node: &Node) -> Result<Context, ()>
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Instantiate a new Context for the Document of a given Node.
Note: the Context is root-level for that document, use .set_context_node
to limit scope to this node
pub fn register_namespace(&self, prefix: &str, href: &str) -> Result<(), ()>
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Register a namespace prefix-href pair on the xpath context
pub fn evaluate(&self, xpath: &str) -> Result<Object, ()>
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evaluate an xpath
pub fn node_evaluate(&self, xpath: &str, node: &Node) -> Result<Object, ()>
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evaluate an xpath on a context Node
pub fn node_evaluate_readonly(
&self,
xpath: &str,
node: RoNode
) -> Result<Object, ()>
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&self,
xpath: &str,
node: RoNode
) -> Result<Object, ()>
evaluate an xpath on a context RoNode
pub fn set_context_node(&mut self, node: &Node) -> Result<(), ()>
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localize xpath context to a specific Node
pub fn findnodes(
&mut self,
xpath: &str,
node_opt: Option<&Node>
) -> Result<Vec<Node>, ()>
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&mut self,
xpath: &str,
node_opt: Option<&Node>
) -> Result<Vec<Node>, ()>
find nodes via xpath, at a specified node or the document root
pub fn findvalue(
&mut self,
xpath: &str,
node_opt: Option<&Node>
) -> Result<String, ()>
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&mut self,
xpath: &str,
node_opt: Option<&Node>
) -> Result<String, ()>
find a literal value via xpath, at a specified node or the document root
Trait Implementations
Auto Trait Implementations
impl !RefUnwindSafe for Context
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impl !Send for Context
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impl !Sync for Context
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impl Unpin for Context
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impl !UnwindSafe for Context
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Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,