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87 lines
1.5 KiB
Nim
87 lines
1.5 KiB
Nim
discard """
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output: '''B
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0
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E2-B'''
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joinable: false
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"""
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{.experimental: "overloadableEnums".}
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type
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E1 = enum
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value1,
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value2
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E2 = enum
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value1,
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value2 = 4
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const
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Lookuptable = [
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E1.value1: "1",
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value2: "2"
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]
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when false:
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const
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Lookuptable: array[E1, string] = [
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value1: "1",
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value2: "2"
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]
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proc p(e: E1): int =
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# test that the 'case' statement is smart enough:
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case e
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of value1: echo "A"
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of value2: echo "B"
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let v = p value2 # ERROR: ambiguous!
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# (value2|value2) nkClosedSymChoice -> nkSym
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proc x(p: int) = discard
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proc x(p: string) = discard
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proc takeCallback(param: proc(p: int)) = discard
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takeCallback x
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echo ord v
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block: # https://github.com/nim-lang/RFCs/issues/8
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type
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Enum1 = enum
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A, B, C
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Enum2 = enum
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A, Z
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proc f(e: Enum1): int = ord(e)
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proc g(e: Enum2): int = ord(e)
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proc h(e: Enum1): int = ord(e)
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proc h(e: Enum2): int = ord(e)
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let fA = f(A) # Type of A is well defined
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let gA = g(A) # Same as above
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let hA1 = h(Enum1.A) # A requires disambiguation
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let hA2 = h(Enum2.A) # Similarly
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let hA3 = h(B)
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let hA4 = h(B)
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let x = ord(Enum1.A) # Also
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doAssert fA == 0
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doAssert gA == 0
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doAssert hA1 == 0
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doAssert hA2 == 0
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doAssert x == 0
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doAssert hA3 == 1
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doAssert hA4 == 1
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# bug #18769
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proc g3[T](x: T, e: E2): int =
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case e
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of value1: echo "E2-A" # Error: type mismatch: got 'E1' for 'value1' but expected 'E2 = enum'
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of value2: echo "E2-B"
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let v5 = g3(99, E2.value2)
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