Expand description

Reorder items.

mod, extern crate and use declarations are reordered in alphabetical order. Trait items are reordered in pre-determined order (associated types and constants comes before methods).

Enums

A simplified version of ast::ItemKind.

Functions

Choose the ordering between the given two items.
Divides imports into three groups, corresponding to standard, external and local imports. Sorts each subgroup.
Rewrite a list of items with reordering and/or regrouping. Every item in items must have the same ast::ItemKind. Whether reordering, regrouping, or both are done is determined from the context.