Struct NamedSubst 

pub struct NamedSubst { /* private fields */ }

A named substitution map: maps Name → Expr.

Implementations

impl NamedSubst

pub fn new() -> Self

Create an empty substitution.

pub fn insert(&mut self, name: Name, val: Expr)

Insert a binding.

pub fn get(&self, name: &Name) -> Option<&Expr>

Look up a name.

pub fn len(&self) -> usize

Return the number of bindings.

pub fn is_empty(&self) -> bool

Check if empty.

pub fn apply(&self, expr: &Expr) -> Expr

Apply the substitution to an expression.

Replaces any Const(name, []) that appears in the map.

Trait Implementations

impl Clone for NamedSubst

fn clone(&self) -> NamedSubst

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NamedSubst

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

Formats the value using the given formatter.

impl Default for NamedSubst

fn default() -> NamedSubst

Returns the “default value” for a type.