Type Alias xmlXPathFuncLookupFunc

pub type xmlXPathFuncLookupFunc = Option<unsafe extern "C" fn(ctxt: *mut c_void, name: *const xmlChar, ns_uri: *const xmlChar) -> xmlXPathFunction>;

xmlXPathFuncLookupFunc: @ctxt: an XPath context @name: name of the function @ns_uri: the namespace name hosting this function

Prototype for callbacks used to plug function lookup in the XPath engine.

Returns the XPath function or NULL if not found.

Aliased Type

enum xmlXPathFuncLookupFunc {
    None,
    Some(unsafe extern "C" fn(_: *mut c_void, _: *const u8, _: *const u8) -> Option<unsafe extern "C" fn(_: *mut _xmlXPathParserContext, _: i32)>),
}

Variants

None

No value.

Some(unsafe extern "C" fn(_: *mut c_void, _: *const u8, _: *const u8) -> Option<unsafe extern "C" fn(_: *mut _xmlXPathParserContext, _: i32)>)

Some value of type T.