Struct Bindings 

pub struct Bindings(/* private fields */);

Term definitions of a context, keyed by term and kept in insertion order.

Implementations

impl Bindings

pub fn insert( &mut self, key: Key, def: Nullable<TermDefinition>, ) -> Option<Nullable<TermDefinition>>

Binds key to def, returning the definition it replaced, if any.

impl Bindings

pub fn new() -> Self

Creates an empty set of bindings.

pub fn len(&self) -> usize

Returns the number of bound terms.

pub fn is_empty(&self) -> bool

Checks whether no term is bound.

pub fn get(&self, key: &Key) -> Option<Nullable<&TermDefinition>>

Returns the definition bound to the given term, if any.

The result is Some(Nullable::Null) for a term the context explicitly unsets by binding it to null.

pub fn get_entry(&self, i: usize) -> Option<(&Key, Nullable<&TermDefinition>)>

Returns the ith binding in insertion order, if there is one.

pub fn iter(&self) -> BindingsIter<'_>

Returns an iterator over the bindings, in insertion order.

pub fn insert_with( &mut self, key: Key, def: Nullable<TermDefinition>, ) -> Option<Nullable<TermDefinition>>

Binds key to def, returning the definition it replaced, if any.

Same as insert.

Trait Implementations

impl Clone for Bindings

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Bindings

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Bindings

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Bindings

Available on crate feature serde only.

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Bindings

impl FromIterator<(Key, Nullable<TermDefinition>)> for Bindings

fn from_iter<T: IntoIterator<Item = (Key, Nullable<TermDefinition>)>>( iter: T, ) -> Self

Creates a value from an iterator.

impl IntoIterator for Bindings

type Item = (Key, Nullable<TermDefinition>)

The type of the elements being iterated over.

type IntoIter = IntoIter<Key, Nullable<TermDefinition>>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl PartialEq for Bindings

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for Bindings

Available on crate feature serde only.

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Bindings