Struct libxml::xpath::Context

pub struct Context {
    pub context_ptr: xmlXPathContextPtr,
    // some fields omitted
}

The xpath context

Fields

context_ptr: xmlXPathContextPtr

libxml's ContextPtr

Methods

impl Context

pub fn new(doc: &Document) -> Result<Context, ()>

create the xpath context for a document

pub fn register_namespace(&self, prefix: &str, href: &str) -> Result<(), ()>

Register a namespace prefix-href pair on the xpath context

pub fn evaluate(&self, xpath: &str) -> Result<Object, ()>

evaluate an xpath

pub fn set_context_node(&mut self, node: &Node) -> Result<(), ()>

localize xpath context to a specific Node

pub fn findnodes(     &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, ()>

find a literal value via xpath, at a specified node or the document root

Trait Implementations

impl Clone for Context

fn clone(&self) -> Context

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Drop for Context

fn drop(&mut self)

free xpath context when it goes out of scope