40 lines
1.3 KiB
Nim
40 lines
1.3 KiB
Nim
# this module will be further extended in PR
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# https://github.com/status-im/nim-libp2p/pull/107/
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import chronos
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import chronicles
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import macros
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# could not figure how to make it with a simple template
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# sadly nim needs more love for hygenic templates
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# so here goes the macro, its based on the proc/template version
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# and uses quote do so it's quite readable
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macro checkFutures*[T](futs: seq[Future[T]], exclude: untyped = []): untyped =
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let nexclude = exclude.len
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case nexclude
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of 0:
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quote do:
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let pos = instantiationInfo()
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for res in `futs`:
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if res.failed:
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let exc = res.readError()
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# We still don't abort but warn
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warn "Something went wrong in a future",
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error=exc.name, file=pos.filename, line=pos.line
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else:
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quote do:
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let pos = instantiationInfo()
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for res in `futs`:
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block check:
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if res.failed:
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let exc = res.readError()
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for i in 0..<`nexclude`:
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if exc of `exclude`[i]:
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trace "Ignoring an error (no warning)",
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error=exc.name, file=pos.filename, line=pos.line
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break check
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# We still don't abort but warn
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warn "Something went wrong in a future",
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error=exc.name, file=pos.filename, line=pos.line
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