Function static_end_code

core/src/compiler/top.rs:95–106

Returns a statically-known `END` exit code and its source position, if any.

(expr: &Expr)

/// Returns a statically-known `END` exit code and its source position, if any.
fn static_end_code(expr: &Expr) -> Option<(i32, LineCol)> {
    match expr {
        Expr::Integer(span) => Some((span.value, span.pos)),
        Expr::Negate(span) => {
            let Expr::Integer(inner) = &span.expr else {
                return None;
            };
            inner.value.checked_neg().map(|value| (value, span.pos))
        }
        _ => None,
    }
}

/// Returns true if `expr` references `target_key`.
fn expr_references_symbol(expr: &Expr, target_key: &SymbolKey) -> bool {