Class GapCursor

src/internal/allocator/split.rs:600–606

Cursor which incrementally checks for interference as the split region grows.

        // Cursor which incrementally checks for interference as the split
        // region grows.
        struct GapCursor<'a, R: RegInfo> {
            cursor: InterferenceCursor<'a, R>,
            splitter: &'a Splitter,
            virt_regs: &'a VirtRegs,
            left: usize,
            right: usize,
        }
        impl<'a, R: RegInfo> GapCursor<'a, R> {
            fn advance_left(
                &mut self,