64 lines
1.6 KiB
Rust
64 lines
1.6 KiB
Rust
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// 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 => { $e:expr }),+
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]
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$(, $ports:path => [
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$(type_this $messages:path$(($(x $xs: ident),+))dont_type_this*
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-> $nexts:ident => { $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($($(ref $x,)+)* ref next)) => {
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// FIXME (#2329) we really want move out of enum here.
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let $next = unsafe { let x <- *ptr::addr_of(*next); x };
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$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 => { $es }),+
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])*
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}
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}
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};
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}
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macro_rules! select {
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{
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$( $port:path => {
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$($message:path$(($($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 => { $e }),+
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])+}
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}
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}
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}
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