Struct Legacy 

pub struct Legacy {
    pub since: String,
    pub kind: LegacyKind,
    pub span: Span,
}

A bidama’s rename ledger, declared at its top level. Two forms:

• legacy_names(since, prefix): the bidama’s definitions were once all named prefix_x. From version since, every definition x is also reachable as prefix_x — a BRIDGE for callers still on the old spelling, open while the bidama’s version is at least since and below the next minor — and a definition that must keep its prefix (the stripped name is a reserved word or a builtin the bidama uses bare) is also reachable by its stripped name, for good.
• legacy_names(since, [["old", "home::new"], …]): definitions the bidama MOVED to another bidama. old stays a bridge to home::new over the same window, so a twin is moved, not copied.
• legacy_names(since, [:first, …]): definitions that share a builtin’s name and were reached bare under the flat runtime. Over the same window an importer’s bare call of one is B0012; outside it, and for every definition not listed, the importer’s bare name is the builtin.

Like use, it is consumed by the resolver and evaluates to nothing; an expired ledger stays in the source, and powers the fix for a late caller.

Fields

since: String

kind: LegacyKind

span: Span

Trait Implementations

impl Clone for Legacy

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 Legacy

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

Formats the value using the given formatter.

impl PartialEq for Legacy

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Legacy