The proto-lens library provides to protocol buffers using modern Haskell language and library patterns. Specifically, it provides:
Composable field accessors via lenses
Simple field name resolution/overloading via type-level literals
Type-safe reflection and encoding/decoding of messages via GADTs
Changes
Changelog for proto-lens
v0.3.1.0
Improve references to types/fields in decoding error messages (#187).
Bump the dependency on base for ghc-8.4.2.
Make Registry an instance of Semigroup.
v0.3.0.0
Remove support for ghc-7.10. (#136)
Use a .cabal file that’s auto-generated from hpack. (#138)
Add buildMessageDelimited: size-delimited streams of Messages (#102)
Add support for parsing Any messages in google protobuf text format (#124)
Use the Tag newtype consistently. (#127)
Add support for tracking unknown fields. (#129)
Improve an error message. (#132)
Bundle enum pattern synonyms with their type. (#136)
Implement proto3-style “open” enums. (#137)
Consolidate proto-lens-descriptors into proto-lens. (#140)
Split the Message class into separate methods. (#139)
Improve an error message when decoding Anys. (#146)
Refactor the `FieldDescriptorType. (#147)
Improve text format error messages. (#148)
Add module Data.ProtoLens.Service.Types. (#154)
Add Haddock comments to fields. (#172)
v0.2.2.0
Bump the dependency on base to support ghc-8.2.1.
v0.2.1.0
Include base’s modules in the reexport list.
Use custom-setup in packages that depend on proto-lens-protoc.
Allow .proto files to import between Haskell packages.
Add the proto-lens-protobuf-types package.
v0.2.0.1
Make the libraries ‘-Wall -Werror’-clean for the latest
version of GHC.
v0.2.0.0
Support OverloadedLabels with the new lens-labels package.
Fix codegen for field names that are already camel-cased.
Increase version bounds to work with Stackage lts-8.
v0.1.0.5
Fix the handling of packed repeated fields (#38)
Improve space usage and time of decoding (#63)
Print fields ordered by tag number (#40)
v0.1.0.4
Relaxed dependency constraints on data-default-class for
new stackage LTS.
v0.1.0.3
In printing and parsing protocol buffers use/interpret escape
sequences in a way compatible with the Protocol Buffer
distribution’s C/C++ escaping style, closing Issues #44 and
#45. This makes the text output incompatible with previous
versions; earlier versions will misinterpret text written by this
version and this version will misinterpret text written by
previous versions.
Support reading text protocol buffers with single quote characters
(’) for string delimiters, closing Issue #20.
v0.1.0.2
Expose more of protoc-gen-haskell to plugins.
Support enum aliases.
TextFormat prints enum names instead of numbers.
v0.1.0.1
Support ghc-8.
Handle .proto files without a “package” declaration (#11).
