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// Test for loops.
---
// Empty array.
#for x in () [Nope]
// Array.
#let sum = 0
#for x in (1, 2, 3, 4, 5) {
sum += x
}
#test(sum, 15)
// Dictionary is not traversed in insertion order.
// Should output `age: 1, name: Typst,`.
#for k, v in (Name: "Typst", Age: 2) [
{k}: {v}.
]
// String.
{
let out = ""
let first = true
for c in "abc" {
if not first {
out += ", "
}
first = false
out += c
}
test(out, "a, b, c")
}
---
// Block body.
// Should output `[1st, 2nd, 3rd, 4th, 5th, 6th]`.
{
"[" + for v in (1, 2, 3, 4, 5, 6) {
(if v > 1 [, ]
+ [{v}]
+ if v == 1 [st]
+ if v == 2 [nd]
+ if v == 3 [rd]
+ if v >= 4 [th])
} + "]"
}
// Template body.
// Should output `234`.
#for v in (1, 2, 3, 4, 5, 6, 7) [#if v >= 2 and v <= 5 { repr(v) }]
---
// Value of for loops.
// Ref: false
#test(type(for v in () {}), "template")
#test(type(for v in () []), "template")
---
// Ref: false
// Uniterable expression.
// Error: 11-15 cannot loop over boolean
#for v in true {}
// Make sure that we don't complain twice.
// Error: 11-18 cannot add integer and string
#for v in 1 + "2" {}
// A single error stops iteration.
#test(error, for v in (1, 2, 3) {
if v < 2 [Ok] else {error}
})
---
// Error: 5 expected identifier
#for
// Error: 5 expected identifier
{for}
// Error: 7 expected keyword `in`
#for v
// Error: 10 expected expression
#for v in
// Error: 15 expected body
#for v in iter
// Should output `v in iter`.
// Error: 5 expected identifier
#for
v in iter {}
// Should output `A thing`.
// Error: 7-10 expected identifier, found string
A#for "v" thing
// Should output `in iter`.
// Error: 6-9 expected identifier, found string
#for "v" in iter {}
// Should output `+ b in iter`.
// Error: 7 expected keyword `in`
#for a + b in iter {}
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