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|
discard """
output: '''
@[]
5
0
a
hi
Hello, World!
(e: 42)
hey
foo
foo
foo
false
true
'''
"""
import macros, json
block t2057:
proc mpf_get_d(x: int): float = float(x)
proc mpf_cmp_d(a: int; b: float): int = 0
template toFloatHelper(result, tooSmall, tooLarge: untyped) =
result = mpf_get_d(a)
if result == 0.0 and mpf_cmp_d(a,0.0) != 0:
tooSmall
if result == Inf:
tooLarge
proc toFloat(a: int): float =
toFloatHelper(result) do:
raise newException(ValueError, "number too small")
do:
raise newException(ValueError, "number too large")
doAssert toFloat(8) == 8.0
import sequtils, os
block t2629:
template glob_rst(basedir: string = ""): untyped =
if baseDir.len == 0:
to_seq(walk_files("*.rst"))
else:
to_seq(walk_files(basedir/"*.rst"))
let rst_files = concat(glob_rst(), glob_rst("docs"))
when true: echo rst_files
block t5417:
macro genBody: untyped =
let sbx = genSym(nskLabel, "test")
when true:
result = quote do:
block `sbx`:
break `sbx`
else:
template foo(s1, s2) =
block s1:
break s2
result = getAst foo(sbx, sbx)
proc test() =
genBody()
block t909:
template baz() =
proc bar() =
var x = 5
iterator foo(): int {.closure.} =
echo x
var y = foo
discard y()
macro test(): untyped =
result = getAst(baz())
test()
bar()
block t993:
type PNode = ref object of RootObj
template litNode(name, ty) =
type name = ref object of PNode
val: ty
litNode PIntNode, int
template withKey(j: JsonNode; key: string; varname,
body: untyped): typed =
if j.hasKey(key):
let varname{.inject.}= j[key]
block:
body
var j = parsejson("{\"zzz\":1}")
withkey(j, "foo", x):
echo(x)
block t1337:
template someIt(a, pred): untyped =
var it {.inject.} = 0
pred
proc aProc(n: auto) =
n.someIt(echo(it))
aProc(89)
import mlt
block t4564:
type Bar = ref object of RootObj
proc foo(a: Bar): int = 0
var a: Bar
let b = a.foo() > 0
block t8052:
type
UintImpl[N: static[int], T: SomeUnsignedInt] = object
raw_data: array[N, T]
template genLoHi(TypeImpl: untyped): untyped =
template loImpl[N: static[int], T: SomeUnsignedInt](dst: TypeImpl[N div 2, T], src: TypeImpl[N, T]) =
let halfSize = N div 2
for i in 0 ..< halfSize:
dst.raw_data[i] = src.raw_data[i]
proc lo[N: static[int], T: SomeUnsignedInt](x: TypeImpl[N,T]): TypeImpl[N div 2, T] {.inline.}=
loImpl(result, x)
genLoHi(UintImpl)
var a: UintImpl[4, uint32]
a.raw_data = [1'u32, 2'u32, 3'u32, 4'u32]
doAssert a.lo.raw_data.len == 2
doAssert a.lo.raw_data[0] == 1
doAssert a.lo.raw_data[1] == 2
block t2585:
type
RenderPass = object
state: ref int
RenderData = object
fb: int
walls: seq[RenderPass]
Mat2 = int
Vector2[T] = T
Pixels=int
template use(fb: int, st: untyped): untyped =
echo "a ", $fb
st
echo "a ", $fb
proc render(rdat: var RenderData; passes: var openArray[RenderPass]; proj: Mat2;
indexType = 1) =
for i in 0 ..< len(passes):
echo "blah ", repr(passes[i])
proc render2(rdat: var RenderData; screenSz: Vector2[Pixels]; proj: Mat2) =
use rdat.fb:
render(rdat, rdat.walls, proj, 1)
block t4292:
template foo(s: string): string = s
proc variadicProc(v: varargs[string, foo]) = echo v[0]
variadicProc("a")
block t2670:
template testTemplate(b: bool): typed =
when b:
var a = "hi"
else:
var a = 5
echo a
testTemplate(true)
block t4097:
var i {.compileTime.} = 2
template defineId(t: typedesc) =
const id {.genSym.} = i
static: inc(i)
proc idFor(T: typedesc[t]): int {.inline, raises: [].} = id
defineId(int8)
defineId(int16)
doAssert idFor(int8) == 2
doAssert idFor(int16) == 3
block t5235:
template outer(body: untyped) =
template test(val: string) =
const SomeConst: string = val
echo SomeConst
body
outer:
test("Hello, World!")
# bug #11941
type X = object
e: int
proc works(T: type X, v: auto): T = T(e: v)
template fails(T: type X, v: auto): T = T(e: v)
var
w = X.works(42)
x = X.fails(42)
echo x
import mtempl5
proc foo(): auto =
trap "foo":
echo "hey"
discard foo()
# bug #4722
type
IteratorF*[In] = iterator() : In {.closure.}
template foof(In: untyped) : untyped =
proc ggg*(arg: IteratorF[In]) =
for i in arg():
echo "foo"
iterator hello() : int {.closure.} =
for i in 1 .. 3:
yield i
foof(int)
ggg(hello)
# bug #2586
var z = 10'u8
echo z < 9 # Works
echo z > 9 # Error: type mismatch
# bug #5993
template foo(p: proc) =
var bla = 5
p(bla)
foo() do(t: var int):
discard
t = 5
proc bar(t: var int) =
t = 5
foo(bar)
block: # bug #12595
template test() =
let i = 42
discard {i: ""}
test()
block: # bug #21920
template t[T](): T =
discard
t[void]() # Error: expression has no type: discard
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