move edn_view into layout

tui/src/lib.rs

@@ -1,9 +1,12 @@
 pub use ::tek_input;
-pub use ::tek_output;
-pub use ::tek_edn;
 pub(crate) use tek_input::*;
+
+pub use ::tek_output;
 pub(crate) use tek_output::*;
 
+pub use ::tek_edn;
+pub(crate) use ::tek_edn::*;
+
 mod tui_engine;  pub use self::tui_engine::*;
 mod tui_content; pub use self::tui_content::*;
 mod tui_input;   pub use self::tui_input::*;
@@ -17,6 +20,23 @@ mod tui_border; pub use self::tui_border::*;
 
 pub(crate) use std::sync::{Arc, RwLock, atomic::{AtomicBool, Ordering::*}};
 pub(crate) use std::io::{stdout, Stdout};
+pub(crate) use std::error::Error;
+
+/// Standard result type.
+pub type Usually<T> = Result<T, Box<dyn Error>>;
+
+/// Standard optional result type.
+pub type Perhaps<T> = Result<Option<T>, Box<dyn Error>>;
+
+/// Prototypal case of implementor macro.
+/// Saves 4loc per data pats.
+#[macro_export] macro_rules! from {
+    ($(<$($lt:lifetime),+>)?|$state:ident:$Source:ty|$Target:ty=$cb:expr) => {
+        impl $(<$($lt),+>)? From<$Source> for $Target {
+            fn from ($state:$Source) -> Self { $cb }
+        }
+    };
+}
 
 pub use ::better_panic; pub(crate) use better_panic::{Settings, Verbosity};
 pub use ::palette; pub(crate) use ::palette::{*, convert::*, okhsl::*};