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discard """
targets: "c cpp js"
"""
proc fn1[T](a: openArray[T]): seq[T] =
for ai in a: result.add ai
proc fn2[T](a: var openArray[T]): seq[T] =
for ai in a: result.add ai
proc fn3[T](a: var openArray[T]) =
for i, ai in mpairs(a): ai = i * 10
proc main =
var a = [1,2,3,4,5]
doAssert fn1(a.toOpenArray(1,3)) == @[2,3,4]
doAssert fn2(toOpenArray(a, 1, 3)) == @[2,3,4]
doAssert fn2(a.toOpenArray(1,3)) == @[2,3,4]
fn3(a.toOpenArray(1,3))
when defined(js): discard # xxx bug #15952: `a` left unchanged
else: doAssert a == [1, 0, 10, 20, 5]
block: # bug #12521
block:
type slice[T] = openArray[T]
# Proc using that alias
proc testing(sl: slice[int]): seq[int] =
for item in sl:
result.add item
let mySeq = @[1, 2, 3, 4, 5, 6, 7, 8, 9]
doAssert testing(mySeq) == mySeq
doAssert testing(mySeq[2..^2]) == mySeq[2..^2]
block:
type slice = openArray[int]
# Proc using that alias
proc testing(sl: slice): seq[int] =
for item in sl:
result.add item
let mySeq = @[1, 2, 3, 4, 5, 6, 7, 8, 9]
doAssert testing(mySeq) == mySeq
doAssert testing(mySeq[2..^2]) == mySeq[2..^2]
block: # bug #23321
block:
proc foo(x: openArray[int]) =
doAssert x[0] == 0
var d = new array[1, int]
foo d[].toOpenArray(0, 0)
block:
proc foo(x: openArray[int]) =
doAssert x[0] == 0
proc task(x: var array[1, int]): var array[1, int] =
result = x
var d: array[1, int]
foo task(d).toOpenArray(0, 0)
block:
proc foo(x: openArray[int]) =
doAssert x[0] == 0
proc task(x: var array[1, int]): lent array[1, int] =
result = x
var d: array[1, int]
foo task(d).toOpenArray(0, 0)
block:
proc foo(x: openArray[int]) =
doAssert x[0] == 0
proc task(x: var array[1, int]): ptr array[1, int] =
result = addr x
var d: array[1, int]
foo task(d)[].toOpenArray(0, 0)
main()
static: main()
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