Struct Ctx 

pub struct Ctx<'a, V> { /* private fields */ }

Filter execution context.

Implementations

impl<'a, V> Ctx<'a, V>

pub fn new( vars: impl IntoIterator<Item = V>, inputs: &'a RcIter<dyn Iterator<Item = Result<V, String>> + 'a>, ) -> Self

Construct a context.

pub fn inputs(&self) -> &'a RcIter<dyn Iterator<Item = Result<V, String>> + 'a>

Return remaining input values.

impl<'a, V: Clone> Ctx<'a, V>

pub fn pop_var(&mut self) -> V

Remove the latest bound variable from the context.

This is useful for writing Native filters.

pub fn pop_fun(&mut self) -> (&'a Id, Self)

Remove the latest bound function from the context.

This is useful for writing Native filters.

Trait Implementations

impl<'a, V: Clone> Clone for Ctx<'a, V>

fn clone(&self) -> Ctx<'a, V>

Returns a duplicate of the value.

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

Performs copy-assignment from source.