b74faf354e
When an empty nkArgList `varargs[untyped]` is passed around it is now reused for efficiency sake and to prevent the introduction of a spurious element: before this commit we'd pass the caller a nkArgList[nkHiddenStdConv[nkBracket]] node instead of just an empty nkArgList. Fixes #8706
21 lines
344 B
Nim
21 lines
344 B
Nim
discard """
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output: '''0
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0
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'''
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"""
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import macros
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macro varargsLen(args:varargs[untyped]): untyped =
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doAssert args.kind == nnkArglist
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doAssert args.len == 0
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result = newLit(args.len)
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template bar(a0:varargs[untyped]): untyped =
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varargsLen(a0)
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template foo(x: int, a0:varargs[untyped]): untyped =
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bar(a0)
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echo foo(42)
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echo bar()
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