Module state

Stateful stream wrappers.

Structs

• IndexPositioner
  The IndexPositioner<Item, Range> struct maintains the current index into the stream I. The initial index is index 0. Each Item consumed increments the index by 1; each range consumed increments the position by range.len().
• SourcePosition
  Struct which represents a position in a source file.
• State
  The State<I> struct maintains the current position in the stream I using the Positioner trait to track the position.

Traits

• DefaultPositioned
  Defines a default Positioner type for a particular Stream type.
• Positioner
  Trait for tracking the current position of a Stream.
• RangePositioner
  Trait for tracking the current position of a RangeStream.