Vendor dependencies for 0.3.0 release

vendor/bevy_log/src/once.rs

@@ -0,0 +1,49 @@
+/// Call [`trace!`](crate::trace) once per call site.
+///
+/// Useful for logging within systems which are called every frame.
+#[macro_export]
+macro_rules! trace_once {
+    ($($arg:tt)+) => ({
+        $crate::once!($crate::trace!($($arg)+))
+    });
+}
+
+/// Call [`debug!`](crate::debug) once per call site.
+///
+/// Useful for logging within systems which are called every frame.
+#[macro_export]
+macro_rules! debug_once {
+    ($($arg:tt)+) => ({
+        $crate::once!($crate::debug!($($arg)+))
+    });
+}
+
+/// Call [`info!`](crate::info) once per call site.
+///
+/// Useful for logging within systems which are called every frame.
+#[macro_export]
+macro_rules! info_once {
+    ($($arg:tt)+) => ({
+        $crate::once!($crate::info!($($arg)+))
+    });
+}
+
+/// Call [`warn!`](crate::warn) once per call site.
+///
+/// Useful for logging within systems which are called every frame.
+#[macro_export]
+macro_rules! warn_once {
+    ($($arg:tt)+) => ({
+        $crate::once!($crate::warn!($($arg)+))
+    });
+}
+
+/// Call [`error!`](crate::error) once per call site.
+///
+/// Useful for logging within systems which are called every frame.
+#[macro_export]
+macro_rules! error_once {
+    ($($arg:tt)+) => ({
+        $crate::once!($crate::error!($($arg)+))
+    });
+}