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7d6cbf290a
* Error -> Defect for defects The distinction between Error and Defect is subjective, context-dependent and somewhat arbitrary, so when looking at an exception, it's hard to guess what it is - this happens often when looking at a `raises` list _without_ opening the corresponding definition and digging through layers of inheritance. With the help of a little consistency in naming, it's at least possible to start disentangling the two error types and the standard lib can set a good example here.
49 lines
770 B
Nim
49 lines
770 B
Nim
discard """
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cmd: "nim c --gc:arc --exceptions:goto --panics:off $file"
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output: '''prevented!
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caught
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AssertionDefect
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900'''
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"""
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type
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E = enum
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kindA, kindB
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Obj = object
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case kind: E
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of kindA: s: string
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of kindB: i: int
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ObjA = ref object of RootObj
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ObjB = ref object of ObjA
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proc takeRange(x: range[0..4]) = discard
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proc bplease(x: ObjB) = discard
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proc helper = doAssert(false)
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proc main(i: int) =
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var obj = Obj(kind: kindA, s: "abc")
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obj.kind = kindB
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obj.i = 2
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try:
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var objA = ObjA()
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bplease(ObjB(objA))
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except ObjectConversionDefect:
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echo "prevented!"
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try:
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takeRange(i)
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except RangeDefect:
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echo "caught"
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try:
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helper()
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except AssertionDefect:
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echo "AssertionDefect"
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echo i * i
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main(30)
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