68 lines
824 B
V
68 lines
824 B
V
fn ret(s string) string {
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return s
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}
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fn raise() ?string {
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return none
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}
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fn xx() {
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s := ret(raise() or { return })
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println(s)
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}
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fn test_nested_or() {
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xx()
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}
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fn xx_prop() ?string {
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s := ret(raise()?)
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return s
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}
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fn test_nested_propagation() {
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a := xx_prop() or { 'propagated' }
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assert a == 'propagated'
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}
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struct St {
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mut:
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z f64
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}
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fn (mut s St) raise() ?f64 {
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return error('some error')
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}
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fn retf(f f64) f64 {
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return f
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}
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fn (mut s St) aa() {
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f := retf(s.raise() or { return })
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s.z = 7.5
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println(f)
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}
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fn test_nested_or_method_call() {
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mut x := St{
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z: 2.25
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}
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x.aa()
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assert x.z == 2.25
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}
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fn (mut s St) aa_propagate() ? {
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f := retf(s.raise()?)
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s.z = 7.5
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println(f)
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}
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fn test_nested_propagation_method() {
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mut x := St{
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z: 2.25
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}
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x.aa_propagate() or { x.z = 13.0625 }
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assert x.z == 13.0625
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}
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