Struct Operator

pub struct Operator {
    pub with_left: Op,
    pub without_left: Op,
}

Describes one of Welly’s built-in operators. See also Op.

In general, operators have two meanings. For example - can mean negation or subtraction. The cases are distinguished according to whether the operator is preceded by an expression.

If the operator has only one meaning, we put it in both slots.

Fields

with_left: Op

The meaning of the operator if has a left operand.

without_left: Op

The meaning of the operator if has no left operand.

Implementations

impl Operator

pub const fn new_ambiguous(with_left: Op, without_left: Op) -> Self

Make an Operator describing an operator that has two meanings.

pub const fn new(op: Op) -> Self

Make an Operator describing an operator that has one meaning.

Trait Implementations

impl Clone for Operator

fn clone(&self) -> Operator

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Operator

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

Formats the value using the given formatter.

impl Tree for Operator

fn declare_keywords(declare: impl FnMut(&'static str, Self))

declare() all the keywords whose parse trees are Selfs.

impl Copy for Operator