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<main class="v-doc">
<h1 class="main">Protocol Buffers</h1>
<p>V ships <code>encoding.protobuf</code>, the Protocol Buffers binary wire format in pure V. It has no C
dependency and needs no <code>protoc</code> at build time.</p>
<p>The usual way in is the <code>v pbgen</code> tool, which reads a <code>.proto</code> file and writes the message
structs, their codecs, and the gRPC service declarations:</p>
<pre><code class="language-sh">v pbgen -m kv -o kv/codec.v kv.proto
</code></pre>
<div class="language-v">pub struct GetRequest {
pub mut:
// key is `string key = 1`.
key string
}
pub fn (msg GetRequest) encode() ![]u8 {
return msg.encode_with(protobuf.EncodeOpts{})
}
pub fn decode_get_request(data []u8) !GetRequest {
return decode_get_request_with(data, protobuf.DecodeOpts{})
}
</div>
<p>Only proto3 is supported. <code>v help pbgen</code> documents the options, and
<code>vlib/encoding/protobuf/README.md</code> documents the runtime, the type mapping, and the shape of
the generated code.</p>
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