Change the protoc flags such that when one of our test .proto files
imports another, the filename is consistently specified relative to the
module root.
Change-Id: I690282795cef23347c8794c1c6357e4fe9560d8a
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/217762
Reviewed-by: Joe Tsai <joetsai@google.com>
The MessageInfo cache, once set, must not be cleared, otherwise
there exists a *messageState value where the MessageInfo value is nil.
Fix the generation of the Reset method to avoid clearing this value.
Change-Id: Ic84ca8b2640a43e967c36993da1ccd3f2b7096c4
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/201478
Reviewed-by: Damien Neil <dneil@google.com>
Generate the current index into depIdxs for easier human debugging.
Change-Id: Ida42aa95137b2044a4dc267c31cebec5023bdfb1
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/190278
Reviewed-by: Herbie Ong <herbie@google.com>
Drop the dependency from generated files on prototype.Enum: Generated
code should only depend on runtime/proto{iface,impl}.
Drop the Enums, Messages, and Extensions returns form
filetype.Builder.Build. Of these, only Enums was used by generated code.
Change the generated init function to pass the builder a slice of values
to fill in (as is done for messages and extensions).
Remove the filetype dependency on prototype in preparation for
eventually dropping the prototype package entirely.
Change-Id: I28a3420f5dfcc13fed531a64ef07b9afddfd9d55
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/189200
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>
In order for protoc-gen-go to output the current version,
it needs to know what version it is currently running as.
However, we cannot rely on the git tags since the tags are not
made until *after* the commit has been submitted.
Instead, we manually encode the version into the code and
make sure that git tags match up with the version in the code.
The version.go file in runtime/protoimpl contains instructions
for how to make a release. Essentially:
* Every non-release commit has a version string with "devel" in it.
* Every release commit must not have "devel" in it and must be unique.
* The "release process" involves submitting two CLs.
The first CL creates a version string without "devel",
which is the commit that a git tag will actually reference.
The second CL follows immediately and re-introduces "devel"
into the version string.
The following example shows a possible sequence of VersionStrings
for git commits in time-ascending order:
v1.19.0-devel (this CL)
v1.19.0-devel
v1.19.0-devel
v1.19.0-devel
v1.20.0-rc.1 <- tagged
v1.20.0-rc.1.devel
v1.20.0-rc.1.devel
v1.20.0-rc.1.devel
v1.20.0-rc.2 <- tagged
v1.20.0-rc.2.devel
v1.20.0 <- tagged (future public release)
v1.20.0-devel
v1.20.0-devel
v1.20.0-devel
v1.20.0-devel
v1.20.1 <- tagged
v1.20.1-devel
v1.20.1-devel
v1.21.0 <- tagged
v1.21.0-devel
Note that we start today with v1.19.0-devel, which means that our initial
release will be v1.20.0. This number was intentionally chosen since
1) the number 20 has some correlation to the fact that we keep calling
the new implementation the "v2" implementation, and
2) the set of tagged versions for github.com/golang/protobuf
and google.golang.org/protobuf are unlikely to ever overlap.
This way, the version of protoc-gen-go is never ambiguous which module
it was built from.
Now that we have version information, we add support for generating .pb.go
files with the version information recorded. However, we do not emit
these for .pb.go files in our own repository since they are always guaranteed
to be at the right version (enforced by integration_test.go).
Updates golang/protobuf#524
Change-Id: I25495a45042c2aa39a39cb7e7738ae8e831a9d26
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/186117
Reviewed-by: Damien Neil <dneil@google.com>
The following improvements were made:
* All standalone comments above the "syntax" marker are preserved
similar to Java and some other generators.
* All standalone comments above the "package" marker are preserved
to be consistent with our former behavior.
* Leading comments are now generated for enums and extension fields.
* Single-line trailing comments are now generated for
enum values, message fields, and extension fields.
* The leading comments for each field that is part of a oneof are now
generated with the wrapper types rather than being shoved into the
comment for the oneof itself in an unreadable way.
* The deprecation marker is always generated as being above the declaration
rather than sometimes being an inlined comment.
* The deprecation marker is now properly generated for weak field setters.
Updates golang/protobuf#666
Change-Id: I7fd832dd4f86d15bfff70d7c22c6ba4934c05fcf
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/189238
Reviewed-by: Damien Neil <dneil@google.com>
Since the enum maps are here to stay, group the declarations together
in a var block for better readability in godoc.
Change-Id: I9a313266539e9a60781f98b80a5293379f82607b
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/189077
Reviewed-by: Damien Neil <dneil@google.com>
The v2 implementation strictly enforces that there are no conflicts at
all in the protobuf namespace unlike the prior v1 implementation.
This change is almost certainly going to cause loud failures for users
that were unknowingly tolerating registration conflicts.
We modify internal/filedesc to be able to record the Go package path
that the file descriptor is declared within. This information is used
by reflect/protoregistry to print both the previous Go package that
registered some declaration, and current Go package that is attempting
to register some declaration.
Change-Id: Ib5eb21c1c98495afc51aa08bd4404bd9d64b5b57
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/186177
Reviewed-by: Damien Neil <dneil@google.com>
CL/174938 removed these methods in favor of a method that returned
only the descriptors. This CL adds back in the Type methods alongside
the Descriptor methods.
In a vast majority of protobuf usages, only the descriptor information
is needed. However, there is a small percentage that legitimately needs
the Go type information. We should provide both, but document that the
descriptor-only information is preferred.
Change-Id: Ia0a098997fb1bd009994940ae8ea5257ccd87cae
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/184578
Reviewed-by: Damien Neil <dneil@google.com>
We define MessageState, which is essentially an atomically set *MessageInfo.
By nesting this as the first field in every generated message, we can
implement the reflective methods on a *MessageState when obtained by
unsafe casting a concrete message pointer as a *MessageState.
The MessageInfo held by MessageState provides additional Go type information
to interpret the memory that comes after the contents of the MessageState.
Since we are nesting a MessageState in every message,
the memory use of every message instance grows by 8B.
On average, the body of ProtoReflect grows from 133B to 202B (+50%).
However, this is offset by XXX_Methods, which is 108B and
will be removed in a future CL. Taking into account the eventual removal
of XXX_Methods, this is a net reduction of 25%.
name old time/op new time/op delta
Name/Value-4 70.3ns ± 2% 17.5ns ± 6% -75.08% (p=0.000 n=10+10)
Name/Nil-4 70.6ns ± 3% 33.4ns ± 2% -52.66% (p=0.000 n=10+10)
name old alloc/op new alloc/op delta
Name/Value-4 16.0B ± 0% 0.0B -100.00% (p=0.000 n=10+10)
Name/Nil-4 16.0B ± 0% 0.0B -100.00% (p=0.000 n=10+10)
name old allocs/op new allocs/op delta
Name/Value-4 1.00 ± 0% 0.00 -100.00% (p=0.000 n=10+10)
Name/Nil-4 1.00 ± 0% 0.00 -100.00% (p=0.000 n=10+10)
Change-Id: I92bd58dc681c57c92612fd5ba7fc066aea34e95a
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/185460
Reviewed-by: Damien Neil <dneil@google.com>
We modify protoc-gen-go to stop generating exported XXX fields.
The unsafe implementation is unaffected by this change since unsafe
can access fields regardless of visibility. However, for the purego
implementation, we need to respect Go visibility rules as enforced
by the reflect package.
We work around this by generating a exporter function that given
a reference to the message and the field to export, returns a reference
to the unexported field value. This exporter function is protected by
a constant such that it is not linked into the final binary in non-purego
build environment.
Updates golang/protobuf#276
Change-Id: Idf5c1f158973fa1c61187ff41440acb21c5dac94
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/185141
Reviewed-by: Damien Neil <dneil@google.com>
If we were starting from scratch, we would not have added the enum maps.
However, they already exist and see a fair amount of usage.
The effort to remove them is not worth it. Thus, remove the deprecation
warning since they are here to stay.
Note that the generated code does not refer to the generated enum maps.
One day, the linker should be able to elide them if unused by the user.
However, https://golang.org/issue/2559 would need to be resolved first.
Change-Id: Ia8b9b1812b5d8462ca2fa1d543170e4a09ff9e4f
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/183177
Reviewed-by: Damien Neil <dneil@google.com>
The internal/fileinit package is split apart into two packages:
* internal/filedesc constructs descriptors from the raw proto.
It is very similar to the previous internal/fileinit package.
* internal/filetype wraps descriptors with Go type information
Overview:
* The internal/fileinit package will be deleted in a future CL.
It is kept around since the v1 repo currently depends on it.
* The internal/prototype package is deleted. All former usages of it
are now using internal/filedesc instead. Most significantly,
the reflect/protodesc package was almost entirely re-written.
* The internal/impl package drops support for messages that do not
have a Descriptor method (pre-2016). This removes a significant amount
of technical debt.
filedesc.Builder to parse raw descriptors.
* The internal/encoding/defval package now handles enum values by name.
Change-Id: I3957bcc8588a70470fd6c7de1122216b80615ab7
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/182360
Reviewed-by: Damien Neil <dneil@google.com>
This is a breaking change in light of new methods added in CL/174918.
This removes:
Enum.Type: replacement is Descriptor
Message.Type: replacement is Descriptor and New
Change-Id: Iaa5328795407c8401ef14ed038bd5ace19d8e03b
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/174938
Reviewed-by: Damien Neil <dneil@google.com>
Generate the needed infrastructure to ensure that we can statically
enforce minimum and maximum versions. This enables us to have a policy
when we release v2 where it fails to build for:
* new generated code with really old runtimes
* new runtimes with really old generated code
Change-Id: Ib699ad62c06dff8f9285806394a741c18db00288
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/178546
Reviewed-by: Damien Neil <dneil@google.com>
The name MessageType is easily confused with protoreflect.MessageType.
Rename it as MessageInfo, which follows the pattern set by v1,
where the equivalent data structure is called InternalMessageInfo.
Change-Id: I535956e1f7c6e9b07e9585e889d5e93388d0d2ce
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/178478
Reviewed-by: Damien Neil <dneil@google.com>
A proto2 message can reference a proto3 enum. It is currently cumbersome
to set proto3 enums in proto2 messages. Add the Enum method in all situations
to support this situation. It also removes yet another point of divergence
between proto2 and proto3.
We could consider removing this method if Go ever gets generics,
but that hypothetical future is long ways away.
Change-Id: Ib83bc87e46b49f3271b90bacb2893bb8e278e4f2
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/177257
Reviewed-by: Damien Neil <dneil@google.com>
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>
Added methods:
Enum.Descriptor
Message.Descriptor
EnumType.Descriptor
MessageType.Descriptor
ExtensionType.Descriptor
Message.New
All functionality is switched over to use those methods instead of
implicitly relying on the fact that {Enum,Message}Type implicitly
implement the associated descriptor interface.
This CL does not yet remove {Enum,Message}.Type or prevent
{Enum,Message,Extension}Type from implementating a descriptor.
That is a subsequent CL.
The Message.New method is also added to replace functionality
that will be lost when the Type methods are removed.
Change-Id: I7fefde1673bbd40bfdac489aca05cec9a6c98eb1
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/174918
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Herbie Ong <herbie@google.com>
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>
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>
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>
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>
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>
