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Add arity typetrait

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Mark Flamer 2013-09-02 18:20:00 -07:00
commit 73aba23a49
2 changed files with 6 additions and 0 deletions
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compiler/evals.nim
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@ -914,6 +914,10 @@ proc evalTypeTrait*(trait, operand: PNode, context: PSym): PNode =
result = newStrNode(nkStrLit, typ.typeToString(preferName))
result.typ = newType(tyString, context)
result.info = trait.info
of "arity":
result = newIntNode(nkIntLit, typ.n.len-1)
result.typ = newType(tyInt, context)
result.info = trait.info
else:
internalAssert false