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https://github.com/logos-messaging/logos-messaging-nim.git
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13316201f7
* bump_dependencies.md: add nim-results dependency * change imports stew/results to results * switching to Nim 2.0.8 * waku.nimble: reflect the requirement nim 1.6.0 to 2.0.8 Adding --mm:refc as nim 2.0 enables a new garbage collector that we're not yet ready to support * adapt waku code to Nim 2.0 * gcsafe adaptations because Nim 2.0 is more strict
49 lines
1.3 KiB
Nim
49 lines
1.3 KiB
Nim
## This file contains the base message response type that will be handled.
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## The response will be created from the Waku Thread and processed in
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## the main thread.
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import std/json, results
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import ../../alloc
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type ResponseType {.pure.} = enum
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OK
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ERR
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type InterThreadResponse* = object
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respType: ResponseType
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content: cstring
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proc createShared*(
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T: type InterThreadResponse, res: Result[string, string]
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): ptr type T =
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## Converts a `Result[string, string]` into a `ptr InterThreadResponse`
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## so that it can be transfered to another thread in a safe way.
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var ret = createShared(T)
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if res.isOk():
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let value = res.get()
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ret[].respType = ResponseType.OK
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ret[].content = value.alloc()
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else:
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let error = res.error
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ret[].respType = ResponseType.ERR
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ret[].content = res.error.alloc()
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return ret
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proc process*(
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T: type InterThreadResponse, resp: ptr InterThreadResponse
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): Result[string, string] =
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## Converts the received `ptr InterThreadResponse` into a
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## `Result[string, string]`. Notice that the response is expected to be
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## allocated from the Waku Thread and deallocated by the main thread.
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defer:
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deallocShared(resp[].content)
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deallocShared(resp)
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case resp[].respType
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of OK:
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return ok($resp[].content)
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of ERR:
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return err($resp[].content)
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