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Feature flag for raises support (#488) 

Feature flags allow consumers of chronos to target versions with and
without certain features via compile-time selection. The first feature
flag added is for raise tracking support.
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Jacek Sieka 2024-01-08 14:54:50 +01:00 committed by GitHub
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chronos/config.nim
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@ -11,6 +11,15 @@
## `chronosDebug` can be defined to enable several debugging helpers that come ## `chronosDebug` can be defined to enable several debugging helpers that come
## with a runtime cost - it is recommeneded to not enable these in production ## with a runtime cost - it is recommeneded to not enable these in production
## code. ## code.
##
## In this file we also declare feature flags starting with `chronosHas...` -
## these constants are declared when a feature exists in a particular release -
## each flag is declared as an integer starting at 0 during experimental
## development, 1 when feature complete and higher numbers when significant
## functionality has been added. If a feature ends up being removed (or changed
## in a backwards-incompatible way), the feature flag will be removed or renamed
## also - you can use `when declared(chronosHasXxx): when chronosHasXxx >= N:`
## to require a particular version.
const const
chronosHandleException* {.booldefine.}: bool = false chronosHandleException* {.booldefine.}: bool = false
## Remap `Exception` to `AsyncExceptionError` for all `async` functions. ## Remap `Exception` to `AsyncExceptionError` for all `async` functions.
@ -79,6 +88,9 @@ const
"" ""
## OS polling engine type which is going to be used by chronos. ## OS polling engine type which is going to be used by chronos.
chronosHasRaises* = 0
## raises effect support via `async: (raises: [])`
when defined(chronosStrictException): when defined(chronosStrictException):
{.warning: "-d:chronosStrictException has been deprecated in favor of handleException".} {.warning: "-d:chronosStrictException has been deprecated in favor of handleException".}
# In chronos v3, this setting was used as the opposite of # In chronos v3, this setting was used as the opposite of