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Allow FileDescriptors to be parsed with extension registries #8220

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merged 2 commits into from Feb 1, 2021
Merged

Allow FileDescriptors to be parsed with extension registries #8220

merged 2 commits into from Feb 1, 2021

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jskeet
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@jskeet jskeet commented Jan 20, 2021 •
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This allows for much cleaner handling of extensions in dynamic environments such as when writing a protoc plugin.

@jskeet
Include the size of values (and tags) for extensions, even if the val…
cea3653 
…ue is the default

Fixes protocolbuffers#8218.
@jskeet
Add an extension registry option when parsing file descriptors
f01d9e5 
This is important when parsing descriptor sets that contain extensions.
(The alternative is to get the descriptor bytes again for individual
elements, e.g. message descriptors, and reparse them with the
appropriate extensions. It's really ugly.)
@google-cla google-cla bot added the cla: yes label Jan 20, 2021
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jskeet commented Jan 20, 2021

(First commit is from #8219.)

@jskeet jskeet added the c# label Jan 20, 2021
jtattermusch
jtattermusch approved these changes Jan 29, 2021
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LGTM, but wondering what the immediate use is. Are you planning to write a protoc plugin in pure C#?

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jskeet commented Jan 29, 2021

We already have a protoc plugin in pure C#: https://github.com/googleapis/gapic-generator-csharp
It requires some annoying hackery to get at the options.

Additionally, we're working on an "API index" which will parse protobuf descriptor sets for protos in https://github.com/googleapis/googleapis
Both of these will be simpler when this is merged :)

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#8220
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We already have a protoc plugin in pure C#: https://github.com/googleapis/gapic-generator-csharp
It requires some annoying hackery to get at the options.

Ah, nice, I did not realize that.

Additionally, we're working on an "API index" which will parse protobuf descriptor sets for protos in https://github.com/googleapis/googleapis
Both of these will be simpler when this is merged :)

SG!

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I looked at the test failures and they seem unrelated. The Windows C# failure also exists on master.

@jtattermusch jtattermusch merged commit f9e8bf4 into protocolbuffers:master Feb 1, 2021
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@jtattermusch jtattermusch jtattermusch approved these changes

@navave navave navave approved these changes

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@jskeet @hixio-mh @jtattermusch @navave @protobuf-kokoro