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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
684 B
Nim
49 lines
684 B
Nim
discard """
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output: '''
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foo
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C
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3.14
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foo
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3.14
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3.14
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'''
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"""
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type
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V = enum
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A, B, C
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X = object
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f0: string
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case f1: V
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of A: f2: string
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of B: discard
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of C: f3: float
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var obj = X(f0: "foo", f1: C, f3: 3.14)
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block:
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echo obj.f0
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echo obj.f1
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doAssertRaises(FieldDefect): echo obj.f2
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echo obj.f3
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block:
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let a0 = addr(obj.f0)
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echo a0[]
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# let a1 = unsafeAddr(obj.f1)
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# echo a1[]
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doAssertRaises(FieldDefect):
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let a2 = addr(obj.f2)
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echo a2[]
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let a3 = addr(obj.f3)
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echo a3[]
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# Prevent double evaluation of LHS
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block:
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var flag = false
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proc wrap(x: X): X =
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doAssert flag == false
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flag = true
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result = x
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echo wrap(obj).f3
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