63 lines
1.5 KiB
Rust
63 lines
1.5 KiB
Rust
// xfail-test - this isn't really a test.
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{
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// select!
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macro_rules! select_if (
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{
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$index:expr,
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$count:expr
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} => {
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fail
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};
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{
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$index:expr,
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$count:expr,
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$port:path => [
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$(type_this $message:path$(($(x $x: ident),+))dont_type_this*
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-> $next:ident => { move $e:expr }),+
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]
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$(, $ports:path => [
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$(type_this $messages:path$(($(x $xs: ident),+))dont_type_this*
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-> $nexts:ident => { move $es:expr }),+
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] )*
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} => {
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if $index == $count {
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match move pipes::try_recv($port) {
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$(Some($message($($(move $x,)+)* move next)) => {
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let $next = move next;
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move $e
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})+
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_ => fail
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}
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} else {
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select_if!(
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$index,
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$count + 1
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$(, $ports => [
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$(type_this $messages$(($(x $xs),+))dont_type_this*
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-> $nexts => { move $es }),+
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])*
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)
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}
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};
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)
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macro_rules! select (
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{
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$( $port:path => {
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$($message:path$(($($x: ident),+))dont_type_this*
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-> $next:ident $e:expr),+
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} )+
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} => {
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let index = pipes::selecti([$(($port).header()),+]/_);
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select_if!(index, 0 $(, $port => [
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$(type_this $message$(($(x $x),+))dont_type_this* -> $next => { move $e }),+
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])+)
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}
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)
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}
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