Module sink 

What the read direction builds a value into.

The counterpart of crate::source, and the asymmetry between them is real: reading a value needs accessors, building one needs constructors, and a constructor has to be told what kind of thing it is building or the representation cannot store it.

Every constructor carries its type

Sink::integer, Sink::float and Sink::character all take the PrimitiveKind the value came from, and none of them has to. serde_json::Value uses it for exactly one decision — a 64-bit width becomes a decimal string, because a JSON number is a double and loses the low bits past 2^53 — and could have made that decision from the magnitude instead. It does not, because a form that changed shape at 2^53 would compare unequal across the boundary, and because a representation that stores an int16 differently from an int32 must be told which it has rather than left to infer it from a value that fits both.

This is the hazard the module note in crate names, in its constructor form: a coordinate the current implementation happens not to need is still a coordinate, and dropping it from the signature is what makes the next implementation guess.

Structs

Aggregate

An aggregate under construction.

Traits

Sink

A value the read direction can be built into.