14 Commits

Author SHA1 Message Date
Damien Neil
e89e6244e0 all: change module to google.golang.org/protobuf
Temporarily remove go.mod, since we can't generate an accurate one until
the corresponding v1 change is submitted.

Change-Id: I1e1ad97f2b455e33f61ffaeb8676289795e47e72
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/177000
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>
2019-05-14 17:28:29 +00:00
Joe Tsai
5e71dc95f2 cmd/protoc-gen-go: used named types for special fields
Using a named fields gives us the flexibility to change the underlying
representation of special fields without needing to regenerate user code.

We add a named type for ExtensionFields, UnknownFields, and SizeCache.

Change-Id: I107cf82899850ea76665310ce79def60f0f7ab97
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/172402
Reviewed-by: Damien Neil <dneil@google.com>
2019-04-16 22:04:16 +00:00
Joe Tsai
7ca7098113 cmd/protoc-gen-go: drop xxx_ prefix for package-level variables
Lower-casing the FileDescriptor variable provides for shorter and
more readable global variable names. This has a very minor benefit
that the read-only data section of a binary is slightly smaller
since function names do end up in the final binary.

Change-Id: I077364905e5c9adea69873b3ea580fddc68b9eb8
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/172119
Reviewed-by: Herbie Ong <herbie@google.com>
2019-04-16 16:31:54 +00:00
Damien Neil
0d3e8cc096 proto, runtime/protoiface: add support for fast-path marshaling
Allow message implementations to provide optimized versions of standard
operations. Generated messages now include a ProtoReflectMethods method,
returning a protoiface.Methods struct containing pointers to assorted
optional functions.

The Methods struct also includes a Flags field indicating support for
optional features such as deterministic marshaling.

Implementation of the fast paths (and tests) will come in later CLs.

Change-Id: Idd1beed0ecf43ec5e5e7b8da2ee1e08d3ce32213
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/170340
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>
2019-04-02 21:23:04 +00:00
Joe Tsai
61968ce130 cmd/protoc-gen-go: perform some code cleanup
Minor changes:
* Use x as the receiver since "e" and "m" are meaningless in the presence
of user-defined enum and message names.
* Consistently keep enum methods together, rather awkwardly split apart
by the value maps.

Change-Id: I68e5666efb56ac7a4d062fb223b9f826dc72aba9
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/170357
Reviewed-by: Herbie Ong <herbie@google.com>
2019-04-01 20:44:00 +00:00
Joe Tsai
5d72cc2d37 cmd/protoc-gen-go: lazily GZIP-encode the raw descriptor
This reduces the init-time cost slightly since the GZIP'd
raw descriptor is constructed lazily on demand.

Change-Id: I482c6a2201b8786e425d7dee5612fdfd60ab1500
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/169917
Reviewed-by: Herbie Ong <herbie@google.com>
2019-04-01 20:24:54 +00:00
Joe Tsai
35ec98fdcb cmd/protoc-gen-go: generate for v2-only dependencies
This removes yet another set of dependencies of v2 on v1.
The only remaining dependency are in the _test.go files,
primarily for proto.Equal.

Changes made:
* cmd/protoc-gen-go no longer generates any functionality that depends
on the v1 package, and instead only depends on v2.
* internal/fileinit.FileBuilder.MessageOutputTypes is switched from
protoreflect.MessageType to protoimpl.MessageType since the
implementation must be fully inialized before registration occurs.
* The test for internal/legacy/file_test.go is switched to a legacy_test
package to avoid a cyclic dependency.
This requires Load{Enum,Message,File}Desc to be exported.

Change-Id: I43e2fe64cff4eea204258ce11e791aca5eb6e569
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/169298
Reviewed-by: Damien Neil <dneil@google.com>
2019-03-26 17:03:31 +00:00
Joe Tsai
559d47f1da cmd/protoc-gen-go: fix init order for v1 registration
The v1 registration leaks the message types out to the proto package.
When doing that, it must ensure that the reflection data structures
for those types are properly initialized first. We achieve that by
doing v1 registration at the end of the reflection init function.

Change-Id: If6df18df59d05bad50ff39c2eff6beb19e7466cc
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/168348
Reviewed-by: Damien Neil <dneil@google.com>
2019-03-20 04:16:33 +00:00
Joe Tsai
8e506a8704 cmd/protoc-gen-go: rely on protoimpl for basic helpers
The EnumName, UnmarshalJSONEnum, and CompressGZIP helpers currently live
in v1 protoapi, which would cause all generated messages to depend on v1.
In an effort to break the dependency of v2 on v1, we move these helper
functions to v2 (and re-written to take advantage of protobuf reflection).

These helpers are unfortunate, but we cannot eliminate the functionality
that they implement since they are exposed in the publicly generated API.

Since EnumName does not rely on the enum maps, it removes another dependency
on those variables. Eventually, we can get to the point where these variables
(though declared) are not linked into the binary if the user does not use them.

Also, we rely on the v1 proto package for registration instead of v1 protoapi.
This may re-introduce a cyclic dependency on descriptor proto again in the
future, but the better approach is to just start registering with v2.

Change-Id: Id755585a7a1df14e4a6a2dfa650df221a3c153fb
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/167921
Reviewed-by: Damien Neil <dneil@google.com>
2019-03-18 18:50:16 +00:00
Damien Neil
0fc224513b cmd/protoc-gen-go: enforce init order within packages
Ensure that the init funcs for files within a Go package run in the
dependency order of the source .proto files. That is, if a.proto and b.proto
are part of the same Go package, and a.proto imports b.proto, then b.pb.go's
init funcs must run before a.pb.go's.

Change-Id: I0e86ff22e5c4cab9df7a73fe4805390fadd34b0d
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/166419
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>
Reviewed-by: Herbie Ong <herbie@google.com>
2019-03-10 22:19:14 +00:00
Damien Neil
6bb8dec7f6 cmd/protoc-gen-go: change some arrays to slices to save bytes
Using arrays in the generated reflection information adds unnecessary
eq and hash functions being added to the package. Change to slices
to reduce bloat.

Change-Id: I1a4f6d59021644d93dd6c24679b9233141e89a75
Reviewed-on: https://go-review.googlesource.com/c/164640
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>
2019-03-01 23:53:03 +00:00
Joe Tsai
19058431cd internal/cmd/generate-protos: initial commit
Create a single binary for handling generation of protos.
This replaces previous logic spread throughout the repo in:
* regenerate.bash
* cmd/protoc-gen-go/golden_test.go
* cmd/protoc-gen-go-grpc/golden_test.go
* (indirectly) internal/protogen/goldentest

One of the problems with the former approaches is that they relied on
a version of protoc that was specific to a developer's workstation.
This meant that the result of generation was not hermetic.
To address this, we rely on the hard-coded version of protobuf specified
in the test.bash script.

A summary of changes in this CL are:
* The internal_gengo.GenerateFile and internal_gengogrpc.GenerateFile
functions are unified to have consistent signatures. It seems that the
former accepted a *protogen.GeneratedFile to support v1 where gRPC code
was generated into the same file as the base .pb.go file. However, the
same functionality can be achieved by having the function return
the generated file object.
* The test.bash script patches the protobuf toolchain to have properly
specified go_package options in each proto source file.
* The test.bash script accepts a "-regenerate" argument.
* Add generation for the well-known types. Contrary to how these were
laid out in the v1 repo, all the well-known types are placed in the
same Go package.
* Add generation for the conformance proto.
* Remove regenerate.bash
* Remove internal/protogen
* Remove cmd/protoc-gen-go/golden_test.go
* Remove cmd/protoc-gen-go-grpc/golden_test.go
* Add cmd/protoc-gen-go/annotation_test.go

Change-Id: I4a1a97ae6f66e2fabcf4e4d292c95ab2a2db0248
Reviewed-on: https://go-review.googlesource.com/c/164477
Reviewed-by: Damien Neil <dneil@google.com>
2019-03-01 20:47:52 +00:00
Joe Tsai
25cc69d405 internal/impl: fix legacy logic to know about the new XXX_OneofWrappers method
The XXX_OneofWrappers method is a simplified way to obtain the wrapper structs
compared the previous XXX_OneofFuncs method which returned far more information
that was strictly necessary.

Change-Id: I2670506a2a8f7e8e724846b8c4083e7995371007
Reviewed-on: https://go-review.googlesource.com/c/151679
Reviewed-by: Herbie Ong <herbie@google.com>
2018-11-29 08:04:36 +00:00
Joe Tsai
ea11813c05 internal/testprotos/legacy: initial commit
Add a corpus of generated protobuf messages generated at specific versions
of protoc-gen-go to ensure that we continue to support for generated messages
that have may never be updated.

Change-Id: I04a1b74306f471d7c99f5daf52399a5bd9adcbbc
Reviewed-on: https://go-review.googlesource.com/c/148831
Reviewed-by: Herbie Ong <herbie@google.com>
2018-11-13 22:37:52 +00:00