37 lines
684 B
Nim
37 lines
684 B
Nim
discard """
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file: "tmacrogenerics.nim"
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msg: '''
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instantiation 1 with typedesc and typedesc
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counter: 1
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'''
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output: "int\nfloat\nint\nstring"
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"""
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import typetraits, macros
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var counter {.compileTime.} = 0
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macro makeBar(A, B: typedesc): typedesc =
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inc counter
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echo "instantiation ", counter, " with ", A.name, " and ", B.name
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result = A
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type
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Bar[T, U] = makeBar(T, U)
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var bb1: Bar[int, float]
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var bb2: Bar[float, string]
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var bb3: Bar[int, float]
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var bb4: Bar[string, string]
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proc match(a: int) = echo "int"
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proc match(a: string) = echo "string"
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proc match(a: float) = echo "float"
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match(bb1)
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match(bb2)
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match(bb3)
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match(bb4)
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static:
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echo "counter: ", counter
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