Function eval_with_resolver 

pub fn eval_with_resolver(
    expr: &Expr,
    env: &Env,
    config: &EvalConfig,
    resolver: &dyn BuiltinResolver,
) -> Result<Literal, ExprError>

Evaluate an expression, routing the builtins resolver claims through it.

The resolver is consulted wherever a builtin is applied, at any depth, so a context-dependent builtin behaves the same nested as it does at the root.

Errors

Returns ExprError on type mismatches, unbound variables, step/depth limit exceeded, or runtime errors, including any the resolver itself reports.