printerrors

.gitignore

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+/target

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "alex-utils"
+version = "0.1.0"
+dependencies = [
+ "log",
+]
+
+[[package]]
+name = "log"
+version = "0.4.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b5e6163cb8c49088c2c36f57875e58ccd8c87c7427f7fbd50ea6710b2f3f2e8f"

Cargo.toml

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+[package]
+name = "alex-utils"
+version = "0.1.0"
+edition = "2021"
+
+[features]
+default = ["log"]
+log = ["dep:log"]
+
+[dependencies]
+log = { version = "0.4", optional = true }

src/lib.rs

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+mod print_errors;
+
+pub use print_errors::PrintErrors;

src/print_errors.rs

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+pub trait PrintErrors {
+    type Inner;
+
+    fn some_or_print(self) -> Option<Self::Inner>;
+    fn some_or_print_with_context(self, context: &str) -> Option<Self::Inner>;
+}
+
+impl<T, E> PrintErrors for Result<T, E>
+where
+    E: std::error::Error,
+{
+    type Inner = T;
+
+    fn some_or_print(self) -> Option<Self::Inner> {
+        match self {
+            Ok(val) => Some(val),
+            Err(e) => {
+                #[cfg(feature = "log")]
+                log::error!("{e:?}");
+                #[cfg(not(feature = "log"))]
+                println!("{e:?}");
+                None
+            }
+        }
+    }
+
+    fn some_or_print_with_context(self, context: &str) -> Option<Self::Inner> {
+        match self {
+            Ok(val) => Some(val),
+            Err(e) => {
+                #[cfg(feature = "log")]
+                log::error!("{context}: {e:?}");
+                #[cfg(not(feature = "log"))]
+                println!("{context}: {e:?}");
+                None
+            }
+        }
+    }
+}