Struct egg::SymbolLang

pub struct SymbolLang {
    pub op: Symbol,
    pub children: Vec<Id>,
}

A simple language used for testing.

Fields

op: Symbol

The operator for an enode

children: Vec<Id>

The enode's children Ids

Implementations

impl SymbolLang

pub fn new(op: impl Into<Symbol>, children: Vec<Id>) -> Self

Create an enode with the given string and children

pub fn leaf(op: impl Into<Symbol>) -> Self

Create childless enode with the given string

Trait Implementations

impl Clone for SymbolLang

fn clone(&self) -> SymbolLang

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SymbolLang

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

Formats the value using the given formatter.

impl Eq for SymbolLang

impl Hash for SymbolLang

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given [Hasher].

impl Language for SymbolLang

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

Returns true if this enode matches another enode. This should only consider the operator, not the children Ids.

fn children(&self) -> &[Id]

Return a slice of the children Ids.

fn children_mut(&mut self) -> &mut [Id]

Return a mutable slice of the children Ids.

fn display_op(&self) -> &dyn Display

Returns something that will print the operator.

fn from_op_str(op_str: &str, children: Vec<Id>) -> Result<Self, String>

Given a string for the operator and the children, tries to make an enode.

fn for_each<F: FnMut(Id)>(&self, f: F)

Runs a given function on each child Id.

fn for_each_mut<F: FnMut(&mut Id)>(&mut self, f: F)

Runs a given function on each child Id, allowing mutation of that Id.

fn len(&self) -> usize

Returns the number of the children this enode has.

fn is_leaf(&self) -> bool

Returns true if this enode has no children.

fn update_children<F: FnMut(Id) -> Id>(&mut self, f: F)

Runs a given function to replace the children.

fn map_children<F: FnMut(Id) -> Id>(self, f: F) -> Self

Creates a new enode with children determined by the given function.

fn fold<F, T>(&self, init: T, f: F) -> T where
    F: FnMut(T, Id) -> T,
    T: Clone, 

Folds over the children, given an initial accumulator.

fn to_recexpr<'a, F>(&self, child_recexpr: F) -> RecExpr<Self> where
    Self: 'a,
    F: FnMut(Id) -> &'a [Self], 

Make a RecExpr converting this enodes children to RecExprs

impl Ord for SymbolLang

fn cmp(&self, other: &SymbolLang) -> Ordering

This method returns an [Ordering] between self and other.

#[must_use]fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]fn clamp(self, min: Self, max: Self) -> Self

🔬 This is a nightly-only experimental API. (clamp)

Restrict a value to a certain interval.

impl PartialEq<SymbolLang> for SymbolLang

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl PartialOrd<SymbolLang> for SymbolLang

fn partial_cmp(&self, other: &SymbolLang) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &SymbolLang) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &SymbolLang) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &SymbolLang) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &SymbolLang) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralEq for SymbolLang

impl StructuralPartialEq for SymbolLang