59     /// The source of generation ids.
60     /// Generation ids are a positive, non-zero value.
61     generation: Generation,  field
83     generation: Generation,  field
93 /// The generation counter.
97 struct Generation(isize);  struct
118             .generation().ok()?;  in get()
120         if slot_generation != index.generation {  in get()
132             .generation().ok()?;  in get_mut()
134         if slot_generation != index.generation {  in get_mut()
154         slot.generation_id = self.generation.into();  in reserve()
157             generation: self.generation,  in reserve()
161         self.generation.advance();  in reserve()
190         assert!(slot.generation_id.generation().is_ok());  in remove()
252             generation: Generation::default(),  in new()
292     pub(crate) fn free_link(self) -> Result<Offset, Generation> {  in free_link()  argument
294             Err(Generation(self.0))  in free_link()
300     pub(crate) fn generation(self) -> Result<Generation, Offset> {  in generation()  method
303             Err(generation) => Ok(generation),  in generation()
365 impl Generation {  impl
383 impl Default for Generation {  implementation
385         Generation(1)  in default()
389 impl From<Generation> for GenerationOrFreelink {
390     fn from(gen: Generation) -> GenerationOrFreelink {  in from()