jyapayne/Nim
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

fix overloading issue with generic invocation (#15135)

Browse source 
* fix overloading issue with generic alias

* add test for inheritance depth
This commit is contained in:
jcosborn 2020-08-18 01:23:19 -05:00 • committed by GitHub
commit e194cb41a4
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
2 changed files with 61 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

60
tests/overload/toverload_various.nim
View file

@ -375,3 +375,63 @@ block:
test(c)
var d: FooBarBazX
test(d)
# overloading on tuples with generic alias
block:
type
Foo[F,T] = object
exArgs: T
FooUn[F,T] = Foo[F,tuple[a:T]]
FooBi[F,T1,T2] = Foo[F,tuple[a:T1,b:T2]]
proc foo1[F,T](x: Foo[F,tuple[a:T]]): int = 1
proc foo1[F,T1,T2](x: Foo[F,tuple[a:T1,b:T2]]): int = 2
proc foo2[F,T](x: FooUn[F,T]): int = 1
proc foo2[F,T1,T2](x: FooBi[F,T1,T2]):int = 2
template bar1[F,T](x: Foo[F,tuple[a:T]]): int = 1
template bar1[F,T1,T2](x: Foo[F,tuple[a:T1,b:T2]]): int = 2
template bar2[F,T](x: FooUn[F,T]): int = 1
template bar2[F,T1,T2](x: FooBi[F,T1,T2]): int = 2
proc test(x: any, n: int) =
doAssert(foo1(x) == n)
doAssert(foo2(x) == n)
doAssert(bar1(x) == n)
doAssert(bar2(x) == n)
var a: Foo[int, tuple[a:int]]
test(a, 1)
var b: FooUn[int, int]
test(b, 1)
var c: Foo[int, tuple[a:int,b:int]]
test(c, 2)
var d: FooBi[int, int, int]
test(d, 2)
# inheritance depth
block:
type
Foo[T] = object of RootObj
x: T
Bar[T] = object of Foo[T]
y: T
Baz[T] = object of Bar[T]
z: T
template t0[T](x: Foo[T]): int = 0
template t0[T](x: Bar[T]): int = 1
proc p0[T](x: Foo[T]): int = 0
proc p0[T](x: Bar[T]): int = 1
var a: Foo[int]
var b: Bar[int]
var c: Baz[int]
doAssert(t0(a) == 0)
doAssert(t0(b) == 1)
doAssert(t0(c) == 1)
doAssert(p0(a) == 0)
doAssert(p0(b) == 1)
doAssert(p0(c) == 1)