protobuf_message/3

Documentation
- Reference manual
- Packages
  - Google's Protocol Buffers Library
    - library(protobufs): Google's Protocol Buffers
      - protobuf_message/2
      - protobuf_message/3

Availability::- use_module(library(protobufs)).(can be autoloaded)

[semidet]protobuf_message(?Template, ?Wire_stream)

[nondet]protobuf_message(?Template, ?Wire_stream, ?Rest)

Marshalls and unmarshalls byte streams encoded using Google's Protobuf grammars. protobuf_message/2 provides a bi-directional parser that marshalls a Prolog structure to Wire_stream, according to rules specified by Template. It can also unmarshall Wire_stream into a Prolog structure according to the same grammar. protobuf_message/3 provides a difference list version.

`Template`	is a protobuf grammar specification. On decode, unbound variables in the `Template` are unified with their respective values in the `Wire_stream`. On encode, `Template` must be ground.
`Wire_stream`	is a code list that was generated by a protobuf encoder using an equivalent template.