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e677ef98d5
Weak fields were the predecessor to extensions (many many years ago) and were entirely removed from Google’s production usage by now. (The corresponding field in descriptor.proto was always documented as “// For Google-internal migration only. Do not use.”) Before this change, Go Protobuf still contained support for weak fields behind the `protolegacy` build tag. The `protolegacy` build tag was always documented as not being part of the compatibility agreement: // WARNING: The compatibility agreement covers nothing provided by this flag. // As such, functionality may suddenly be removed or changed at our discretion. const ProtoLegacy = protoLegacy Fixes golang/protobuf#1666 Change-Id: Ie1675424bc80d9f44345ccb96a858ef847ee1018 Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/641655 Reviewed-by: Chressie Himpel <chressie@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
25 lines
1.1 KiB
Go
25 lines
1.1 KiB
Go
// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package flags provides a set of flags controlled by build tags.
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package flags
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// ProtoLegacy specifies whether to enable support for legacy functionality
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// such as MessageSets, and various other obscure behavior
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// that is necessary to maintain backwards compatibility with proto1 or
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// the pre-release variants of proto2 and proto3.
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//
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// This is disabled by default unless built with the "protolegacy" tag.
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//
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// WARNING: The compatibility agreement covers nothing provided by this flag.
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// As such, functionality may suddenly be removed or changed at our discretion.
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const ProtoLegacy = protoLegacy
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// LazyUnmarshalExtensions specifies whether to lazily unmarshal extensions.
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//
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// Lazy extension unmarshaling validates the contents of message-valued
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// extension fields at unmarshal time, but defers creating the message
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// structure until the extension is first accessed.
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const LazyUnmarshalExtensions = ProtoLegacy
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