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typetraits: fixes #6454; genericParams; added lenTuple; added tuple type get (#13064)

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Timothee Cour 2020-01-09 23:51:37 -08:00 • committed by Andreas Rumpf
commit 4cd86c0842
4 changed files with 60 additions and 4 deletions
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18
tests/metatype/ttypetraits.nim
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@ -44,9 +44,6 @@ block: # typeToString
doAssert (tuple[a: C2b[MyInt, C4[cstring]], b: cint, c: float]).name3 ==
"tuple[a: C2b{C}[MyInt{int}, C4[cstring]], b: cint{int32}, c: float]"
#----------------------------------------------------
block distinctBase:
block:
type
@ -90,4 +87,17 @@ block distinctBase:
doAssert($distinctBase(typeof(b2)) == "string")
doAssert($distinctBase(typeof(c2)) == "int")
block genericParams:
type Foo[T1, T2]=object
doAssert genericParams(Foo[float, string]) is (float, string)
type Foo1 = Foo[float, int]
doAssert genericParams(Foo1) is (float, int)
type Foo2 = Foo[float, Foo1]
doAssert genericParams(Foo2) is (float, Foo[float, int])
doAssert genericParams(Foo2) is (float, Foo1)
doAssert genericParams(Foo2).get(1) is Foo1
doAssert (int,).get(0) is int
doAssert (int, float).get(1) is float
static: doAssert (int, float).lenTuple == 2
static: doAssert (1, ).lenTuple == 1
static: doAssert ().lenTuple == 0