Files
Nim/tests/vm/tconst.nim
2021-07-23 08:46:13 +02:00

49 lines
1.0 KiB
Nim

discard """
targets: "c cpp js"
"""
import std/strutils
template forceConst(a: untyped): untyped =
## Force evaluation at CT, but `static(a)` is simpler
const ret = a
ret
proc isNimVm(): bool =
when nimvm: result = true
else: result = false
block:
doAssert forceConst(isNimVm())
doAssert not isNimVm()
doAssert forceConst(isNimVm()) == static(isNimVm())
doAssert forceConst(isNimVm()) == isNimVm().static
template main() =
# xxx merge more const related tests here
const ct = CompileTime
# refs https://github.com/timotheecour/Nim/issues/718, apparently `CompileTime`
# isn't cached, which seems surprising.
block:
const
a = """
Version $1|
Compiled at: $2, $3
""" % [NimVersion & spaces(44-len(NimVersion)), CompileDate, ct]
let b = $a
doAssert ct in b, $(b, ct)
doAssert NimVersion in b
block: # Test for fix on broken const unpacking
template mytemp() =
const
(x, increment) = (4, true)
a = 100
discard (x, increment, a)
mytemp()
static: main()
main()