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newException supports setting of the 'parent' field

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Andreas Rumpf 2017-01-26 15:20:24 +01:00
commit ca0b16fd33
1 changed files with 2 additions and 1 deletions
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lib/system.nim
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@ -2554,13 +2554,14 @@ else:
proc debugEcho*(x: varargs[expr, `$`]) {.magic: "Echo", noSideEffect, proc debugEcho*(x: varargs[expr, `$`]) {.magic: "Echo", noSideEffect,
tags: [], raises: [].} tags: [], raises: [].}
template newException*(exceptn: typedesc, message: string): expr = template newException*(exceptn: typedesc, message: string; parentException: ref Exception = nil): expr =
## creates an exception object of type ``exceptn`` and sets its ``msg`` field ## creates an exception object of type ``exceptn`` and sets its ``msg`` field
## to `message`. Returns the new exception object. ## to `message`. Returns the new exception object.
var var
e: ref exceptn e: ref exceptn
new(e) new(e)
e.msg = message e.msg = message
e.parent = parentException
e e
when hostOS == "standalone": when hostOS == "standalone":