Struct libxml::xpath::Context

pub struct Context<'a> {
    pub context_ptr: *mut c_void,
    pub document: &'a Document,
}

The xpath context

Fields

context_ptr: *mut c_void

libxml's ContextPtr

document: &'a Document

Document contains pointer, needed for ContextPtr, so we need to borrow Document to prevent it's freeing

Methods

impl<'a> Context<'a>

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

create the xpath context for a document

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

Register a namespace prefix-href pair on the xpath context

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

evaluate an xpath

Trait Implementations

impl<'a> Clone for Context<'a>

fn clone(&self) -> Context<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Drop for Context<'a>

fn drop(&mut self)

free xpath context when it goes out of scope