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// Test argument sinks and spreading.
// Ref: false
---
// Test standard argument overriding.
{
let f(style: "normal", weight: "regular") = {
"(style: " + style + ", weight: " + weight + ")"
}
let myf(..args) = f(weight: "bold", ..args)
test(myf(), "(style: normal, weight: bold)")
test(myf(weight: "black"), "(style: normal, weight: black)")
test(myf(style: "italic"), "(style: italic, weight: bold)")
}
---
// Test multiple calls.
{
let f(b, c: "!") = b + c
let g(a, ..sink) = a + f(..sink)
test(g("a", "b", c: "c"), "abc")
}
---
// Test storing arguments in a variable.
{
let args
let save(..sink) = {
args = sink
}
save(1, 2, three: true)
test(type(args), "arguments")
test(repr(args), "(1, 2, three: true)")
}
---
// Test spreading array and dictionary.
{
let more = (3, -3, 6, 10)
test(min(1, 2, ..more), -3)
test(max(..more, 9), 10)
test(max(..more, 11), 11)
}
{
let more = (c: 3, d: 4)
let tostr(..args) = repr(args)
test(tostr(a: 1, ..more, b: 2), "(a: 1, c: 3, d: 4, b: 2)")
}
---
// None is spreadable.
#let f() = none
#f(..none)
#f(..if false {})
#f(..for x in () [])
---
// Error: 8-14 cannot spread string
#min(.."nope")
---
// Error: 8-14 expected identifier, named pair or argument sink
#let f(..true) = none
---
// Error: 15-16 only one argument sink is allowed
#let f(..a, ..b) = none
---
// Test spreading into array and dictionary.
{
let l = (1, 2, 3)
let r = (5, 6, 7)
test((..l, 4, ..r), range(1, 8))
test((..none), ())
}
{
let x = (a: 1)
let y = (b: 2)
let z = (a: 3)
test((:..x, ..y, ..z), (a: 3, b: 2))
test((..(a: 1), b: 2), (a: 1, b: 2))
}
---
// Error: 11-17 cannot spread dictionary into array
{(1, 2, ..(a: 1))}
---
// Error: 5-11 cannot spread array into dictionary
{(..(1, 2), a: 1)}
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