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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

0.14.4 - Unreleased

Added

Changed

Fixed

0.14.3 - 2024-04-23

Fixed

  • When an enum was defined inside a message that also contained a oneof with the same name as the message name, then the generated code for the enum declaration would fail to compile. This now works. (PR #255) (thanks @TheMerski)

0.14.2 - 2022-11-18

Added

  • Added ability to override the Kotlin package name for multiple packages by using a wildcard with the kotlin_package_mapping parameter to protoc-gen-pbandk. See the README for an example. (PR #232, fixes #230) (thanks @Dogacel)

Changed

Fixed

  • Fixed JSON serialization of default values. (PR #238, fixes #235) (thanks @antongrbin)
    • Fields with explicit presence (such as proto2 optional fields) are no longer included in the JSON output when their value is null.
    • Fields with explicit presence are included in the JSON output when they contain the default value (e.g. an optional int32 field with a value of 0).
    • Message fields with a null value are no longer included in the JSON output even if JsonConfig.outputDefaultValues=true. Only non-null default values are supposed to be output when outputDefaultValues=true.
  • The generated code for a protobuf message named Sequence will no longer cause a compiler error. (PR #241, fixes #237)

0.14.1 - 2022-06-04

Added

  • Message.encodeDelimitedToStream() and Message.Companion.decodeDelimitedFromStream(): these methods allow writing/reading multiple length-delimited messages to/from a single Java OutputStream/InputStream. They are compatible with the encoding used by protobuf-java's writeDelimitedTo() and parseDelimitedFrom()/mergeDelimitedFrom() methods. (PR #213) (thanks @JohnLCaron)

Fixed

  • Fixed compile error about an inaccessible InvalidProtocolBufferException constructor for generated code that contained proto2 required fields. (PR #222, fixes #221)

0.14.0 - 2022-05-24

Added

  • proto3 files that use the optional keyword are now supported! Fields with optional field presence will be nullable in generated Kotlin code. (PR #200, fixes #34) (thanks @NiematojakTomasz)
  • The iosSimulatorArm64, tvosArm64, tvosX64, tvosSimulatorArm64, and linuxArm64 Kotlin/Native targets are now supported. (PR #219, fixes #218)

Changed

  • Kotlin/Native conformance tests on macOS now build using the macosArm64 target instead of the macosX64 target when run on an Apple M1 chip. (PR #219, fixes #218)

Fixed

  • [BREAKING CHANGE] (for proto2 required fields only) Fixed handling of required fields in proto2 files. Required fields will no longer have a default value in generated code. (PR #216, fixes #71)
    • Constructing an instance of a message with required fields will now require providing a value for those fields as part of the constructor call.
    • Decoding of a message with required fields will throw an InvalidProtocolBufferException if the binary/JSON input did not include the field.
    • Messages with required fields will no longer have a Companion.defaultInstance property in the generated code.
  • Fixed the pbandk-protos library to support Java 8. (PR #212, fixes #211)

0.13.0 - 2021-12-08

Added

  • [BREAKING CHANGE] Added MessageDescriptor.fullName and MessageDescriptor.name properties. All protobuf types have to be regenerated using this version of protoc-gen-pbandk. (PRs #184, #192)
  • Added special support for protobuf's google.protobuf.Any message type. (PR #185, fixes #63, partially fixes #72)
    • Added Any.Companion.pack(), Any.unpack(), and Any.isA() convenience methods for working with Any instances. These methods mirror the same-named methods in other protobuf libraries.
    • The special JSON format used for google.protobuf.Any messsages is now correctly used during JSON encoding/decoding. Provide a value for JsonConfig.typeRegistry (which can be constructed using the new typeRegistry {...} builder) when encoding/decoding JSON messages that contain google.protobuf.Any fields.
  • Added visibility parameter to protoc-gen-pbandk to allow changing the visibility of generated code from public to internal. (PR [#191}, fixes #190)
  • macOS builds of pbandk-runtime now include support for Apple Silicon (i.e. pbandk-runtime-macosarm64). (PR #189)

Changed

  • Updated dependencies to Kotlin 1.5.0 and kotlinx-serialization 1.3.0-RC. (PR #189, fixes #171)
    • Updated Kotlin/JS dependencies to protobuf.js 6.11.2.
  • Generated code is now compatible with Kotlin's "explicit API" mode. (PR #191, fixes #134)

Fixed

  • Suppress warnings about deprecated fields used in generated code. (PRs #182, #192, continues #1)

0.12.1 - 2021-11-11

Added

  • Enabled support for Kotlin/JS IR backend. (PR #147, fixes #136) (thanks @itegulov)
    • The runtime is built in BOTH mode so that pbandk can be used with the old Kotlin/JS backend or the new IR one.
    • Conformance tests are run against the new IR backend.
    • Most public pbandk APIs are now annotated with @JsExport to allow them to be used from Kotlin/JS code compiled with the new IR backend. @JsExport doesn't yet support all features of Kotlin, so this annotation is currently applied on a best-effort basis where it's possible to use it.
    • Likewise, generated code is annoated with @pbandk.Export (an alias for @JsExport) to allow it to be used from Kotlin/JS IR code.
  • macOS and iOS builds of pbandk-runtime are now built in CI and available from Maven Central. (PR #163, fixes #88) (thanks @itegulov)
  • Files that contain the deprecated option in the .proto file will now receive a @Deprecated annotation in the generated Kotlin code. (PR #169, fixes #1)

Changed

  • Switched Kotlin/JS runtime library to use UMD instead of CommonJS (PR #170, fixes #60)
  • Minor updates to the gradle config for examples (PR #170)

0.12.0 - Do not use

0.11.0 - 2021-09-24

Fixed

  • [BREAKING CHANGE] Renamed protoc-gen-kotlin to protoc-gen-pbandk in order to work with protoc v3.17.0+. (PR #162, fixes #161) (thanks @kainosk)
    • All references to the protoc-gen-kotlin command in build files should be replaced with protoc-gen-pbandk.
    • protoc commands using --kotlin_out should be updated to use --pbandk_out instead (--kotlin_out is now used by protoc's internal Kotlin generator).
    • Compile dependencies on the pro.streem.pbandk:protoc-gen-kotlin-lib artifact should be replaced with pro.streem.pbandk:protoc-gen-pbandk-lib.
    • If using the official Protobuf Gradle Plugin, the plugin ID should be changed from "kotlin" to "pbandk" in your gradle files and the plugin artifact should be updated from pro.streem.pbandk:protoc-gen-kotlin-jvm to pro.streem.pbandk:protoc-gen-pbandk-jvm.

0.10.0 - 2021-05-07

Added

  • Experimental support for protobuf custom options on fields. Remaining work is tracked in #65. (PRs #103, #152)
    • Protobuf messages that declare an extension range now extend from ExtendableMessage rather than Message.
    • Protobuf extension fields are defined as Kotlin extension properties on the extended class and can be accessed like any other Kotlin property.
  • Experimental support for protobuf reflection. All related APIs require opt-in to the @ExperimentalProtoReflection annotation for now. (PRs #103, #152)
    • MessageDescriptor (available via Message.descriptor or Message.Companion.descriptor) is now part of the public API. Initially only MessageDescriptor.fields is public, which provides access to descriptors for all of the message's fields. Additional properties of the message descriptor will be exposed in future versions. Please file an issue on GitHub if there are specific properties you would like to have access to. (PR #103)
    • FieldDescriptor (available via MessageDescriptor.fields) is now part of the public API. Initially, the field's name and options are public, allowing access to custom options defined on the field in the .proto file. (PR #103)
    • A new Message.getFieldValue(FieldDescriptor) method can be used to read the value of a protobuf field when iterating over fields generically using Message.descriptor.fields.
  • Message.Companion.decodeFromStream() now takes an optional expectedSize parameter to allow reading multiple messages from a single InputStream. The method will not read more than expectedSize bytes from the stream when decoding the message. (PR #148)
  • Add the ability to unit test the output of CodeGenerator (PR #117, fixes #48) (thanks @nbaztec)
  • Added a dedicated Android artifact pbandk-runtime-android of the PBandK runtime. To migrate to this new artifact, replace implementation("pro.streem.pbandk:pbandk-runtime-jvm:0.9.1") with implementation("pro.streem.pbandk:pbandk-runtime:0.10.0") (PR #124, fixes #75) (thanks @jeroenmols)
  • SNAPSHOT builds of the latest code on master are now available by including the https://s01.oss.sonatype.org/content/repositories/snapshots/ maven repository in your build.gradle.kts files (PR #148).
  • Conformance tests running on Kotlin/JVM can now be configured to use ByteBuffer or InputStream/OutputStream for their I/O instead of ByteArray by setting the PBANDK_CONFORMANCE_JVM_IO environment variable. (PR #148)

Changed

  • Updated to Kotlin 1.4. Projects that are still on Kotlin 1.3 should be able to continue using pbandk, but this configuration is only supported on a best-effort basis (please file a GitHub issue with any problems). Projects are encouraged to update to Kotlin 1.4. (PR #114, fixes #86)
  • [BREAKING CHANGE] Migrated the library from JCenter to Maven Central. Please make sure you have the mavenCentral() repository configured in your build.gradle.kts files (PRs #143, #144, fixes #120) (thanks @jeroenmols).
  • [BREAKING CHANGE] The API and implementation of UnknownField changed significantly. If you access the contents of unknown fields in your code, you will need to update to the new API. The unknown field no longer provides access to a decoded version of the field's wire type. Instead it only provides access to the raw binary encoding of the field. (PR #103)
  • Message.encodeToStream() now returns the number of bytes that were written to the stream (previously it didn't return anything). (PR #148)
  • pbandk-runtime on JVM and Android no longer depends on the protobuf-java library. It instead uses the same pure-Kotlin implementation of protobuf primitives that is used by the pbandk-runtime on Kotlin/Native. This avoids dependency conflicts with other libraries (such as com.google.firebase:firebase-perf on Android). (PRs #124, #148, #151, fixes #91, #138) (thanks @jeroenmols)
  • Updated protobuf well-known types to the versions shipped with protobuf 3.15.5.
  • Updated pbandk-runtime-js dependency on protobuf.js to 6.10.2.
  • Building pbandk no longer requires downloading and compiling protobuf. Running conformance tests still requires compiling protobuf however. (PR #150)

Fixed

  • Added workaround for an error in the Kotlin/JS implementation of protoMergeImpl() caused by a Kotlin compiler bug (PR #103)
  • Improved the code generated for messages with a large number of fields to handle even more fields (PR #103)
  • Binary decoding of 64-bit numbers under Kotlin/JS with certain inputs that would previously cause a crash. (PR #103)

0.9.1 - 2021-01-07

Fixed

  • Compile error when proto contains a oneof field with same name as the enclosing message (PR #104, fixes #47) (thanks @nbaztec)
  • All remaining JSON conformance test failures for numeric values (PR #105, partially fixes #72) (thanks @nbaztec)

0.9.0 - 2020-12-23

Added

  • Support for Kotlin/Native (PR #76, fixes #19) (thanks @sebleclerc)
  • JSON encoding/decoding improvements:
    • Support for the json_name protobuf field option
    • Custom encoding/decoding for most of the protobuf well-known types: Duration, Timestamp, Empty, Struct, Value, NullValue, ListValue, and all wrapper types
    • Added JsonConfig class for configuring JSON encoding/decoding at runtime. Currently supported options include ignoreUnknownFieldsInInput, outputDefaultValues, and outputProtoFieldNames (which match the options documented at https://developers.google.com/protocol-buffers/docs/proto3#json_options), and also compactOutput.
  • New binary encoding and decoding overloads on Kotlin/JVM:
    • Message.encodeToStream(java.io.OutputStream)
    • Message.Companion.decodeFromStream(java.io.InputStream)
    • Message.Companion.decodeFromByteBuffer(java.nio.ByteBuffer)

Changed

  • [BREAKING CHANGE] Artifacts are now published to JCenter under new maven coordinates
    • Runtime library: pro.streem.pbandk:pbandk-runtime-common:0.9.0, pro.streem.pbandk:pbandk-runtime-jvm:0.9.0, pro.streem.pbandk:pbandk-runtime-js:0.9.0, pro.streem.pbandk:pbandk-runtime-native:0.9.0
    • Code generation plugin for the protobuf compiler: pro.streem.pbandk:protoc-gen-kotlin-jvm:0.9.0:jvm8@jar
    • ServiceGenerator library: pro.streem.pbandk:protoc-gen-kotlin-lib-jvm:0.9.0
  • Projects that use pbandk can remove the kotlinx-serialization gradle plugin and library dependency if they don't use kotlinx-serialization themselves. The library is now an internal implementation detail of pbandk. (PR #69, fixes #61)
  • Completely rewritten implementation of JSON encoding/decoding, fixing numerous bugs in the old version. The new implementation is much more compliant with the official proto3 JSON spec. Remaining incompatibilities are tracked in #72.
  • [BREAKING CHANGE] Moved all of the binary and JSON encoding functionality, and most of the decoding functionality, from the generated code to the runtime library. Code generated by old versions of pbandk will not run with this new pbandk version.
  • [BREAKING CHANGE] Changed Message so that it no longer extends from itself. Uses of Message<T> should be changed to just Message. (PR #69)
  • [BREAKING CHANGE] Added @PbandkInternal and @PublicForGeneratedCode annotations on portions of the public API that are only public for pbandk's internal use or for use from pbandk-generated code. Using these APIs outside of pbandk will generate compiler warnings and errors. If you have a need for using any of these APIs from your project, please file an issue on GitHub describing your use case.
  • [BREAKING CHANGE] Code that calls any of pbandk's JSON encoding/decoding APIs must now opt-in to the @ExperimentalProtoJson annotation. See https://kotlinlang.org/docs/reference/opt-in-requirements.html#opting-in-to-using-api for detailed instructions. Once pbandk's JSON APIs are no longer considered experimental, this annotation will be removed.
  • [BREAKING CHANGE] Update the public API to follow recent naming conventions from the Kotlin standard library: "marshal"/"unmarshal" is replaced with "encode"/"decode", encoding methods are named encodeTo*, and decoding methods are named decodeFrom*. (PRs #69, #90, fixes #89)
    • The below methods have been renamed and are now defined as extension methods rather than being part of the Message or Message.Companion interface. Code that calls these methods will now need to import them first.
      • Message.protoMarshal() -> Message.encodeToByteArray()
      • Message.Companion.protoUnmarshal(ByteArray) -> Message.Companion.decodeFromByteArray(ByteArray)
      • Message.jsonMarshal() -> Message.encodeToJsonString()
      • Message.Companion.jsonUnmarshal(String) -> Message.Companion.decodeFromJsonString(String)
      • Message.protoMarshal(pbandk.Marshaller) -> Message.encodeWith(pbandk.MessageEncoder)
    • The below methods have been renamed. They will become extension methods in a future pbandk release.
      • Message.Companion.protoUnmarshal(pbandk.Unmarshaller) -> Message.Companion.decodeWith(pbandk.MessageDecoder)
    • The below methods have been renamed and are now defined as extension methods rather than being part of the Message or Message.Companion interface. Code that calls these methods will now need to import them first. The Json parameter from kotlinx-serialization has been replaced with the new JsonConfig type from pbandk.
      • Message.jsonMarshal(kotlinx.serialization.json.Json) -> Message.encodeToJsonString(pbandk.json.JsonConfig)
      • Message.Companion.jsonUnmarshal(kotlinx.serialization.json.Json, String) -> Message.Companion.decodeFromJsonString(String, pbandk.json.JsonConfig)
    • Replaced Marshaller and Unmarshaller interfaces with MessageEncoder and MessageDecoder interfaces, which are much simpler and function differently from the previous interfaces
  • [BREAKING CHANGE] MessageMap.entries is now a Set instead of a List

Removed

  • [BREAKING CHANGE] Removed Sizer and Util from the public API
  • [BREAKING CHANGE] Removed UnknownField constructors and the UnknownField.size() method from the public API

Fixed

  • Crash on Android when encoding google.protobuf.Timestamp fields to JSON (PR #82, fixes #46)
  • StackOverflowError when generating code for really large oneof objects (PR #52) (thanks @tinder-aminghadersohi)
  • Performance problems when compiling generated code with Kotlin 1.4 (PR #101, fixes #94)
  • JSON decoding of unknown enum values (PR #100)
  • Map entry size computation for non-MessageMap maps (PR #99)
  • Some bugs with the handling of packed fields, binary encoding of enums in Kotlin/JS, and base64 encoding/decoding in Kotlin/JS (PR #69, fixes #23)
  • Various conformance test failures (PRs #80, #82)

0.8.1 - 2020-05-22

Added

  • Enable conformance tests for Kotlin/JS

Changed

  • [BREAKING CHANGE] Update to kotlin 1.3.72 and kotlinx.serialization 0.20.0. Projects that depend on pbandk must be using the same versions of kotlin and kotlinx.serialization. (fixes #35)
  • [BREAKING CHANGE] The pbandk-runtime-common maven package is now just called pbandk-runtime. The protoc-gen-kotlin-jvm maven package is now called protoc-gen-kotlin-lib-jvm. The pbandk-runtime-jvm and pbandk-runtime-js packages have not changed names.
  • Use the new Kotlin multiplatform gradle plugin instead of the deprecated plugin (thanks @sebleclerc)
  • Switch from Groovy to Kotlin for build.gradle files (thanks @sebleclerc)
  • Update to gradle 6.2.2 (thanks @sebleclerc)
  • Use the maven-publish gradle plugin instead of the maven plugin (thanks @sebleclerc)

Fixed

  • Name collision with nested types (fixes #24) (thanks @sebleclerc)
  • Fix gradle configs for all examples and build them in CI so they don't break in the future (fixes #37 and #41)