Struct ReductionStep 

pub struct ReductionStep {
    pub rule: ReductionRule,
    pub before: Expr,
    pub after: Expr,
}

A reduction step record used for debugging and tracing.

Fields

rule: ReductionRule

Which reduction rule was applied.

before: Expr

The expression before reduction.

after: Expr

The expression after reduction.

Trait Implementations

impl Clone for ReductionStep

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 ReductionStep

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

Formats the value using the given formatter.