1 files changed, 33 insertions, 0 deletions
diff --git a/core/src/utils.rs b/core/src/utils.rs
new file mode 100644
index 0000000..ebed85b
--- /dev/null
+++ b/core/src/utils.rs
@@ -0,0 +1,33 @@
+//! Utilities.
+//!
+//! Contains everything which doesn't has a better place
+//! to be put in.
+use std::marker::Send;
+use std::fmt::Debug;
+
+use chrono;
+use futures::Future;
+
+
+/// Type alias for an boxed future which is Send + 'static.
+pub type SendBoxFuture<I, E> = Box<Future<Item=I, Error=E> + Send + 'static>;
+
+/// Returns the current data time.
+pub fn now() -> chrono::DateTime<chrono::Utc> {
+    chrono::Utc::now()
+}
+
+/// Trait to allow const `bool` values in generics.
+pub trait ConstSwitch: Debug + Copy + Send + Sync + 'static {
+    const ENABLED: bool;
+}
+
+/// Struct implementing `ConstSwitch` with `ENABLED = true`.
+#[derive(Debug, Copy, Clone)]
+pub struct Enabled;
+impl ConstSwitch for Enabled { const ENABLED: bool = true; }
+/// Struct implementing `ConstSwitch` with `ENABLED = false`.
+#[derive(Debug, Copy, Clone)]
+pub struct Disabled;
+impl ConstSwitch for Disabled { const ENABLED: bool = false; }
+