63 lines
1.3 KiB
Nim
63 lines
1.3 KiB
Nim
discard """
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output: '''Got: 'nnkCall' hi
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{a}
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{b}
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{a, b}'''
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"""
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import
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macros, strutils
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macro outterMacro*(n, blck: untyped): untyped =
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let n = callsite()
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var j : string = "hi"
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proc innerProc(i: int): string =
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echo "Using arg ! " & n.repr
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result = "Got: '" & $n.kind & "' " & $j
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var callNode = n[0]
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expectKind(n, NimNodeKind.nnkCall)
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if n.len != 3 or n[1].kind != NimNodeKind.nnkIdent:
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error("Macro " & callNode.repr &
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" requires the ident passed as parameter (eg: " & callNode.repr &
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"(the_name_you_want)): statements.")
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result = newNimNode(NimNodeKind.nnkStmtList)
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var ass : NimNode = newNimNode(nnkAsgn)
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ass.add(newIdentNode(n[1].ident))
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ass.add(newStrLitNode(innerProc(4)))
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result.add(ass)
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var str: string
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outterMacro(str):
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"hellow"
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echo str
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type E = enum a b
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macro enumerators1(): set[E] = newLit({a})
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macro enumerators2(): set[E] =
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return newLit({b})
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macro enumerators3(): set[E] =
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result = newLit({E.low .. E.high})
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var myEnums: set[E]
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myEnums = enumerators1()
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echo myEnums
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myEnums = enumerators2()
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echo myEnums
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myEnums = enumerators3()
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echo myEnums
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#10751
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type Tuple = tuple
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a: string
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b: int
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macro foo(t: static Tuple): untyped =
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doAssert t.a == "foo"
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doAssert t.b == 12345
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foo((a: "foo", b: 12345))
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