Protocol Buffers for R6RS Scheme

What is it?

This project provides a pure Scheme implementation of Protocol Buffers, including parsing and code generation. Visit the protobuf project page for information about the Protocol Buffers description language and the Protocol Buffers wire protocol.

Latest Updates

http://r6rs-protobuf.googlecode.com/svn/trunk/CHANGES.txt

Documentation

Read the documentation.

Discussion

Visit the discussion group.

Quick Example

You write a .proto file like this

package protobuf.person;

message Person {
  required int32 id = 1;
  required string name = 2;
  optional string email = 3;
}

and compile it like this

(import (protobuf compile))
(define proto (protoc:read-proto (open-input-file "Person.proto")))
(protoc:generate-libraries proto)

to produce an R6RS library form like this

(library (protobuf person)
  (export make-Person-builder	  
	  Person-builder?
          Person-builder-build
	  
	  Person-builder-id
	  set-Person-builder-id!
	  has-Person-builder-id?
	  clear-Person-builder-id!

	  Person-builder-name
	  set-Person-builder-name!
	  has-Person-builder-name?
	  clear-Person-builder-name!

	  Person-builder-email
	  set-Person-builder-email!
	  has-Person-builder-email?
	  clear-Person-builder-email!

	  Person-builder-extension
	  set-Person-builder-extension!
	  has-Person-builder-extension?
	  clear-Person-builder-extension!

	  Person?
	  Person-id
	  Person-name
	  Person-email
          has-Person-email?

	  has-Person-extension?
	  Person-extension

	  Person-read
	  Person-write)

  (import (rnrs base)
	  (rnrs enums)
	  (rnrs records syntactic)
	  (protobuf private))

  ...
)