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discard """
targets: "c js"
output: '''
tdistinct
25
false
false
false
false
Foo
foo
'''
"""
echo "tdistinct"
block tborrowdot:
type
Foo = object
a, b: int
s: string
Bar {.borrow: `.`.} = distinct Foo
var bb: ref Bar
new bb
bb.a = 90
bb.s = "abc"
block tcurrncy:
template Additive(typ: untyped) =
proc `+`(x, y: typ): typ {.borrow.}
proc `-`(x, y: typ): typ {.borrow.}
# unary operators:
proc `+`(x: typ): typ {.borrow.}
proc `-`(x: typ): typ {.borrow.}
template Multiplicative(typ, base: untyped) =
proc `*`(x: typ, y: base): typ {.borrow.}
proc `*`(x: base, y: typ): typ {.borrow.}
proc `div`(x: typ, y: base): typ {.borrow.}
proc `mod`(x: typ, y: base): typ {.borrow.}
template Comparable(typ: untyped) =
proc `<`(x, y: typ): bool {.borrow.}
proc `<=`(x, y: typ): bool {.borrow.}
proc `==`(x, y: typ): bool {.borrow.}
template DefineCurrency(typ, base: untyped) =
type
typ = distinct base
Additive(typ)
Multiplicative(typ, base)
Comparable(typ)
proc `$`(t: typ): string {.borrow.}
DefineCurrency(TDollar, int)
DefineCurrency(TEuro, int)
echo($( 12.TDollar + 13.TDollar )) #OUT 25
block tconsts:
# bug #2641
type MyChar = distinct char
const c:MyChar = MyChar('a')
type MyBool = distinct bool
const b:MyBool = MyBool(true)
type MyBoolSet = distinct set[bool]
const bs:MyBoolSet = MyBoolSet({true})
type MyCharSet= distinct set[char]
const cs:MyCharSet = MyCharSet({'a'})
type MyBoolSeq = distinct seq[bool]
const bseq:MyBoolSeq = MyBoolSeq(@[true, false])
type MyBoolArr = distinct array[3, bool]
const barr:MyBoolArr = MyBoolArr([true, false, true])
# bug #2760
type
DistTup = distinct tuple
foo, bar: string
const d: DistTup = DistTup((
foo:"FOO", bar:"BAR"
))
# bug #7167
type Id = distinct range[0..3]
proc `<=`(a, b: Id): bool {.borrow.}
var xs: array[Id, bool]
for x in xs: echo x # type mismatch: got (T) but expected 'bool'
# bug #11715
type FooD = distinct int
proc `<=`(a, b: FooD): bool {.borrow.}
for f in [FooD(0): "Foo"]: echo f
block tRequiresInit:
template accept(x) =
static: doAssert compiles(x)
template reject(x) =
static: doAssert not compiles(x)
type
Foo = object
x: string
DistinctFoo {.requiresInit, borrow: `.`.} = distinct Foo
DistinctString {.requiresInit.} = distinct string
reject:
var foo: DistinctFoo
foo.x = "test"
doAssert foo.x == "test"
accept:
let foo = DistinctFoo(Foo(x: "test"))
doAssert foo.x == "test"
reject:
var s: DistinctString
s = "test"
doAssert string(s) == "test"
accept:
let s = DistinctString("test")
doAssert string(s) == "test"
block: #17322
type
A[T] = distinct string
proc foo(a: var A) =
a.string.add "foo"
type
B = distinct A[int]
var b: B
foo(A[int](b))
echo A[int](b).string
b.string.add "bar"
assert b.string == "foobar"
type Foo = distinct string
proc main() = # proc instead of template because of MCS/UFCS.
# xxx put everything here to test under RT + VM
block: # bug #12282
block:
proc test() =
var s: Foo
s.string.add('c')
doAssert s.string == "c" # was failing
test()
block:
proc add(a: var Foo, b: char) {.borrow.}
proc test() =
var s: Foo
s.add('c')
doAssert s.string == "c" # was ok
test()
block:
proc add(a: var Foo, b: char) {.borrow.}
proc test() =
var s: string
s.Foo.add('c')
doAssert s.string == "c" # was failing
test()
block: #18061
type
A = distinct (0..100)
B = A(0) .. A(10)
proc test(b: B) = discard
let
a = A(10)
b = B(a)
test(b)
proc test(a: A) = discard
discard cast[B](A(1))
var c: B
block: # bug #9423
block:
type Foo = seq[int]
type Foo2 = distinct Foo
template fn() =
var a = Foo2(@[1])
a.Foo.add 2
doAssert a.Foo == @[1, 2]
fn()
block:
type Stack[T] = distinct seq[T]
proc newStack[T](): Stack[T] =
Stack[T](newSeq[T]())
proc push[T](stack: var Stack[T], elem: T) =
seq[T](stack).add(elem)
proc len[T](stack: Stack[T]): int =
seq[T](stack).len
proc fn() =
var stack = newStack[int]()
stack.push(5)
doAssert stack.len == 1
fn()
static: main()
main()
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