98 lines
2.2 KiB
Rust
98 lines
2.2 KiB
Rust
//! Macros to ease conditional code based on enabled features.
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// Depending on the features not all macros are used.
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#![allow(unused_macros)]
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/// The `os-poll` feature is enabled.
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macro_rules! cfg_os_poll {
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($($item:item)*) => {
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$(
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#[cfg(feature = "os-poll")]
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#[cfg_attr(docsrs, doc(cfg(feature = "os-poll")))]
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$item
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)*
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}
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}
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/// The `os-poll` feature is disabled.
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macro_rules! cfg_not_os_poll {
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($($item:item)*) => {
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$(
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#[cfg(not(feature = "os-poll"))]
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$item
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)*
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}
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}
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/// The `os-ext` feature is enabled.
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macro_rules! cfg_os_ext {
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($($item:item)*) => {
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$(
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#[cfg(feature = "os-ext")]
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#[cfg_attr(docsrs, doc(cfg(feature = "os-ext")))]
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$item
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)*
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}
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}
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/// The `net` feature is enabled.
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macro_rules! cfg_net {
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($($item:item)*) => {
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$(
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#[cfg(feature = "net")]
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#[cfg_attr(docsrs, doc(cfg(feature = "net")))]
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$item
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)*
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}
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}
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/// One of the features enabled that needs `IoSource`. That is `net` or `os-ext`
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/// on Unix (for `pipe`).
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macro_rules! cfg_io_source {
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($($item:item)*) => {
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$(
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#[cfg(any(feature = "net", all(unix, feature = "os-ext")))]
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#[cfg_attr(docsrs, doc(cfg(any(feature = "net", all(unix, feature = "os-ext")))))]
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$item
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)*
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}
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}
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/// The `os-ext` feature is enabled, or one of the features that need `os-ext`.
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macro_rules! cfg_any_os_ext {
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($($item:item)*) => {
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$(
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#[cfg(any(feature = "os-ext", feature = "net"))]
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#[cfg_attr(docsrs, doc(cfg(any(feature = "os-ext", feature = "net"))))]
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$item
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)*
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}
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}
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macro_rules! trace {
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($($t:tt)*) => {
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log!(trace, $($t)*)
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}
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}
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macro_rules! warn {
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($($t:tt)*) => {
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log!(warn, $($t)*)
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}
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}
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macro_rules! error {
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($($t:tt)*) => {
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log!(error, $($t)*)
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}
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}
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macro_rules! log {
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($level: ident, $($t:tt)*) => {
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#[cfg(feature = "log")]
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{ log::$level!($($t)*) }
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// Silence unused variables warnings.
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#[cfg(not(feature = "log"))]
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{ if false { let _ = ( $($t)* ); } }
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}
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}
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