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43 lines
689 B
43 lines
689 B
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/// Run something as async or or depending on feature flag `parallel`
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macro_rules! sync
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{
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(if {$($if:tt)*} else {$($else:tt)*}) => {
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cfg_if::cfg_if! {
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if #[cfg(feature="parallel")] {
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$($if)*
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} else {
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$($else)*
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}
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}
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};
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(if {$($if:tt)*}) => {
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cfg_if::cfg_if! {
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if #[cfg(feature="parallel")] {
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$($if)*
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}
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}
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};
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(else {$($if:tt)*}) => {
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cfg_if::cfg_if! {
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if #[cfg(not(eature="parallel"))] {
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$($if)*
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}
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}
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};
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}
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#[cfg(feature="parallel")]
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#[cfg_attr(feature="parallel", tokio::main)]
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async fn main() {
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println!("Hello world!")
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}
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#[cfg(not(feature="parallel"))]
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fn main() {
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println!("Hello world! sync")
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}
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