Allow logging as optional feature (#26)

* Allow logging as optional feature

* Bump v0.3.4

---------

Co-authored-by: Caleb Leinz <caleb.leinz@atlasground.com>

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "stubborn-io"
-version = "0.3.3"
+version = "0.3.4"
 authors = ["David Raifaizen <david.raifaizen@protonmail.com>"]
 edition = "2021"
 description = "io traits/structs that automatically recover from potential disconnections/interruptions."
@@ -12,10 +12,15 @@ readme = "README.md"
 
 [dependencies]
 tokio = { version = "1", features = ["time", "net"] }
-log = "0.4"
 rand = "0.8"
 
+log = { version = "0.4", optional = true }
+
 [dev-dependencies]
 tokio = { version = "1", features = ["macros", "rt", "fs", "io-util"] }
 tokio-util = { version = "0.7", features = ["codec"] }
 futures = "0.3"
+
+[features]
+default = ["log"]
+log = ["dep:log"]

src/lib.rs

@@ -55,6 +55,7 @@
 //! ```
 
 pub mod config;
+mod log;
 pub mod strategies;
 
 // in the future, there may be a mod for synchronous regular io too, which is why

src/log.rs

@@ -0,0 +1,69 @@
+#[allow(unused_macros)]
+macro_rules! trace {
+    ($($arg:expr),*) => {
+	#[cfg(feature = "log")]
+        log::trace!($($arg),*);
+	#[cfg(not(feature = "log"))]
+	{
+	    $(
+		let _ = $arg;
+	    )*
+	}
+    };
+}
+
+#[allow(unused_macros)]
+macro_rules! debug {
+    ($($arg:expr),*) => {
+	#[cfg(feature = "log")]
+        log::debug!($($arg),*);
+	#[cfg(not(feature = "log"))]
+	{
+	    $(
+		let _ = $arg;
+	    )*
+	}
+    };
+}
+
+macro_rules! info {
+    ($($arg:expr),*) => {
+	#[cfg(feature = "log")]
+        log::info!($($arg),*);
+	#[cfg(not(feature = "log"))]
+	{
+	    $(
+		let _ = $arg;
+	    )*
+	}
+    };
+}
+
+#[allow(unused_macros)]
+macro_rules! warn {
+    ($($arg:expr),*) => {
+	#[cfg(feature = "log")]
+        log::warn!($($arg),*);
+	#[cfg(not(feature = "log"))]
+	{
+	    $(
+		let _ = $arg;
+	    )*
+	}
+    };
+}
+
+macro_rules! error {
+    ($($arg:expr),*) => {
+	#[cfg(feature = "log")]
+        log::error!($($arg),*);
+	#[cfg(not(feature = "log"))]
+	{
+	    $(
+		let _ = $arg;
+	    )*
+	}
+    };
+}
+
+pub(crate) use {error, info};

src/tokio/io.rs

@@ -1,5 +1,5 @@
 use crate::config::ReconnectOptions;
-use log::{error, info};
+use crate::log::{error, info};
 use std::future::Future;
 use std::io::{self, ErrorKind, IoSlice};
 use std::marker::PhantomData;