mirror of
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synced 2023-08-10 21:13:21 +03:00
54 lines
687 B
V
54 lines
687 B
V
fn foo() string {
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println('foo()')
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return 'foo'
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}
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fn foo2() string {
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println('start')
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defer { println('defer') }
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defer { println('defer2') }
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println('end')
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return foo()
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}
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fn test_defer() {
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assert foo2() == 'foo'
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}
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fn set_num(i int, n mut Num) {
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defer { n.val++ }
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println("Hi")
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if i < 5 {
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return
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} else {
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n.val+=1
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}
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}
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fn set_num_opt(n mut Num) ?int {
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defer { n.val = 1 }
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return 99
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}
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struct Num {
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mut:
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val int
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}
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fn test_defer_early_exit() {
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mut sum := Num{0}
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for i in 0..10 {
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set_num(i, mut sum)
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}
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println("sum: $sum.val")
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assert sum.val == 15
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}
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fn test_defer_option() {
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mut ok := Num{0}
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set_num_opt(mut ok) or {
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assert false
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}
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assert ok.val == 1
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}
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