add err log trait to Result

Signed-off-by: Jason Volk <jason@zemos.net>

src/core/result/log_err.rs

@@ -0,0 +1,36 @@
+use std::fmt;
+
+use tracing::Level;
+
+use super::Result;
+use crate::error;
+
+pub trait LogErr<T, E>
+where
+	E: fmt::Display,
+{
+	#[must_use]
+	fn err_log(self, level: Level) -> Self;
+
+	#[inline]
+	#[must_use]
+	fn log_err(self) -> Self
+	where
+		Self: Sized,
+	{
+		self.err_log(Level::ERROR)
+	}
+}
+
+impl<T, E> LogErr<T, E> for Result<T, E>
+where
+	E: fmt::Display,
+{
+	#[inline]
+	fn err_log(self, level: Level) -> Self
+	where
+		Self: Sized,
+	{
+		self.inspect_err(|error| error::inspect_log_level(&error, level))
+	}
+}