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30 lines
637 B
Nim
30 lines
637 B
Nim
discard """
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cmd: "nim check --hint[processing]:off $file"
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errormsg: "3 is not two"
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nimout: '''t8741.nim(13, 9) Error: cannot attach a custom pragma to 'a'
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t8741.nim(29, 15) template/generic instantiation of `onlyTwo` from here
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t8741.nim(25, 12) Error: 3 is not two
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'''
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"""
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for a {.gensym, inject.} in @[1,2,3]:
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discard
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for a {.foobar.} in @[1,2,3]:
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discard
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type Foo[N: static[int]] = distinct int
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proc isTwo(n: int): bool =
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n == 2
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proc onlyTwo[N: static[int]](a: Foo[N]): int =
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when isTwo(N):
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int(a)
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else:
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{.error: $(N) & " is not two".}
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when isMainModule:
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let foo: Foo[3] = Foo[3](5)
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echo onlyTwo(foo)
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