Struct ObjectExpr 

pub struct ObjectExpr {
    pub class: Symbol,
    pub fields: Vec<(Symbol, Expr)>,
}

The decoded form of an object expression: a class symbol and its fields.

A view over the expr/object extension form, letting object-grammar shapes read a structured object’s class and named field expressions without re-walking the raw Expr.

Fields

class: Symbol

The class this object form is tagged with.

fields: Vec<(Symbol, Expr)>

The object’s named fields, in source order.

Implementations

impl ObjectExpr

pub fn to_expr(self) -> Expr

Encode this object back into its expr/object extension expression.

pub fn parse(expr: &Expr) -> Option<Self>

Decode an expr/object extension expression, or None if it is not one.

pub fn field(&self, name: &Symbol) -> Option<&Expr>

The expression bound to the named field, if present.

Trait Implementations

impl Clone for ObjectExpr

fn clone(&self) -> ObjectExpr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ObjectExpr

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

Formats the value using the given formatter.

impl Eq for ObjectExpr

impl PartialEq for ObjectExpr

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for ObjectExpr