mirror of
https://github.com/logos-storage/logos-storage-nim.git
synced 2026-08-03 07:23:20 +00:00
40 lines
1.1 KiB
Nim
40 lines
1.1 KiB
Nim
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## Logos Storage
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## Copyright (c) 2026 Status Research & Development GmbH
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## Licensed under either of
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## * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
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## * MIT license ([LICENSE-MIT](LICENSE-MIT))
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## at your option.
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## This file may not be copied, modified, or distributed except according to
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## those terms.
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{.push raises: [].}
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import std/macros
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import pkg/protobuf_serialization
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import pkg/protobuf_serialization/pkg/results
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type ProtobufDecodeError* = object
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msg*: string
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proc `$`*(e: ProtobufDecodeError): string =
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e.msg
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macro serializerForResult*(_: type Protobuf, Types: untyped): untyped =
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var stmts = newStmtList()
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for T in Types:
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let helperName = genSym(nskProc, "decode" & $T)
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stmts.add quote do:
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proc encode*(c: `T`): seq[byte] =
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encode(Protobuf, c)
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proc `helperName`(buf: seq[byte]): `T` {.raises: [SerializationError].} =
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decode(Protobuf, buf, `T`)
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proc decode*(_: type `T`, buf: seq[byte]): Result[`T`, ProtobufDecodeError] =
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try:
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ok(`helperName`(buf))
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except SerializationError as exc:
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err(ProtobufDecodeError(msg: exc.msg))
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stmts
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