Nim/tests/metatype/tstaticparams.nim
Zahary Karadjov 7dcf6ff50b fix #997
2014-03-16 20:42:06 +02:00

58 lines
1.1 KiB
Nim

discard """
file: "tstaticparams.nim"
output: "abracadabra\ntest\n3\n15\n4\n2"
"""
type
TFoo[T; Val: static[string]] = object
data: array[4, T]
TBar[T; I: static[int]] = object
data: array[I, T]
TA1[T; I: static[int]] = array[I, T]
TA2[T; I: static[int]] = array[0..I, T]
TA3[T; I: static[int]] = array[I-1, T]
TObj = object
x: TA3[int, 3]
proc takeFoo(x: TFoo) =
echo "abracadabra"
echo TFoo.Val
var x: TFoo[int, "test"]
takeFoo(x)
var y: TBar[float, 4]
echo high(y.data)
var
t1: TA1[float, 1]
t2: TA2[string, 4]
t3: TA3[int, 10]
t4: TObj
# example from the manual:
type
Matrix[M,N: static[int]; T] = array[0..(M*N - 1), T]
# Note how `Number` is just a type constraint here, while
# `static[int]` requires us to supply a compile-time int value
AffineTransform2D[T] = Matrix[3, 3, T]
AffineTransform3D[T] = Matrix[4, 4, T]
var m: AffineTransform3D[float]
echo high(m)
proc getRows(mtx: Matrix): int =
result = mtx.M
echo getRows(m)
# issue 997
type TTest[T: static[int], U: static[int]] = array[0..T*U, int]
type TTestSub[N: static[int]] = TTest[1, N]
var x: TTestSub[2]
echo x.high