boolext

core/src/errors/ext.rs

@@ -44,6 +44,46 @@ impl<O, E> ResultExt for Result<O, E> {
     }
 }
 
+pub trait BoolExt: Sized {
+    fn true_or<E>(self, err: E) -> Result<(), E>;
+    fn false_or<E>(self, err: E) -> Result<(), E>;
+}
+
+impl BoolExt for bool {
+    fn true_or<E>(self, err: E) -> Result<(), E> {
+        if self {
+            Ok(())
+        } else {
+            Err(err)
+        }
+    }
+
+    fn false_or<E>(self, err: E) -> Result<(), E> {
+        if self {
+            Err(err)
+        } else {
+            Ok(())
+        }
+    }
+}
+
+pub trait OptExt: Sized {
+    type Inside;
+
+    fn none_or<E>(self, f: impl FnOnce(Self::Inside) -> E) -> Result<(), E>;
+}
+
+impl<T> OptExt for Option<T> {
+    type Inside = T;
+
+    fn none_or<E>(self, f: impl FnOnce(Self::Inside) -> E) -> Result<(), E> {
+        match self {
+            Some(v) => Err(f(v)),
+            None => Ok(())
+        }
+    }
+}
+
 pub trait ErrExt: Sized {
     #[track_caller]
     fn aux(self) -> Aux