proto-lens

A lens-based implementation of protocol buffers in Haskell.

https://github.com/google/proto-lens#readme

Version on this page:0.4.0.1
LTS Haskell 21.24:0.7.1.3
Stackage Nightly 2023-12-10:0.7.1.3
Latest on Hackage:0.7.1.3

See all snapshots proto-lens appears in

BSD-3-Clause licensed by Judah Jacobson
Maintained by proto-lens@googlegroups.com
This version can be pinned in stack with:proto-lens-0.4.0.1@sha256:0bb0324e71814e021f87384f1210f120d9c775b9c159492ad0cf70d9b81a6d8f,2278

Module documentation for 0.4.0.1

The proto-lens library provides an API for 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

v0.4.0.1

  • Bump the dependencies on base and containers to 0.4.0.1.

v0.4.0.0

  • Don’t use data-default for default proto values (#194).
  • Update the proto descriptors to protobuf-3.6.1.
  • Use simplified lens-labels instances. (#208)

v0.3.1.1

  • Bump the lower bound on base to indicate we require ghc>=8.0.

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).

v0.1.0.0

  • Initial version.
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