reenable full/xy mod

src/layout.rs

@@ -3,16 +3,6 @@ use crate::*;
 impl<S: Screen, T: Draw<S>> Layout<S> for T {}
 
 pub trait Layout<S: Screen>: Draw<S> + Sized {
-    fn full_w (self) -> impl Draw<S> {
-        Full::W(self)
-    }
-    fn full_h (self) -> impl Draw<S> {
-        Full::H(self)
-    }
-    fn full_wh (self) -> impl Draw<S> {
-        Full::WH(self)
-    }
-
     fn origin (self, azimuth: impl Into<Option<Azimuth>>) -> impl Draw<S> {
         Origin(azimuth.into(), self)
     }
@@ -98,7 +88,7 @@ impl Sizer {
 
 /// Some layout operations exist in multiple variants that take a single argument.
 /// Their handling in [eval_view] is uniform and goes like this:
-macro_rules! eval_enum ((
+#[macro_export] macro_rules! eval_enum ((
     $name:literal, $output:ident, $state:ident, $value:expr, $Enum:ident {
         $($v:literal => $V:ident),* $(,)?
     }
@@ -111,7 +101,7 @@ macro_rules! eval_enum ((
 
 /// Some layout operations exist in XY, X, and Y variants that take 3 or 2 arguments.
 /// Their handling in [eval_view] is uniform and goes like this:
-macro_rules! eval_xy (
+#[macro_export] macro_rules! eval_xy (
     // Valueless variant:
     //     (fill/x ...)
     //     (fill/y ...)
@@ -166,7 +156,36 @@ macro_rules! eval_xy (
     }};
 );
 
-macro_rules! def_layout_modifier {
+#[macro_export] macro_rules! fn_kw_layout {
+    ($name:ident |$state:ident, $output: ident, $expr:ident| $body:block) => {
+        #[cfg(all(feature = "draw", feature = "eval"))]
+        pub fn $name <O: Screen, S> (
+            $state: &S, $output: &mut O, $expr: &str
+        ) -> Perhaps<XYWH<O::Unit>> where
+            S: Interpret<O, Option<XYWH<O::Unit>>>
+                + for<'b> Namespace<'b, bool>
+                + for<'b> Namespace<'b, O::Unit>
+                + for<'b> Namespace<'b, Option<O::Unit>>
+        $body
+    }
+}
+
+#[macro_export] macro_rules! fn_kw_layout_tui {
+    ($name:ident |$state:ident, $output: ident, $expr:ident| $body:block) => {
+        #[cfg(all(feature = "draw", feature = "eval", feature = "term"))]
+        pub fn $name <S> (
+            $state: &S, $output: &mut Tui, $expr: &str
+        ) -> Perhaps<XYWH<u16>> where
+            S: Interpret<Tui, Option<XYWH<u16>>>
+                + for<'b> Namespace<'b, bool>
+                + for<'b> Namespace<'b, u16>
+                + for<'b> Namespace<'b, Option<u16>>
+                + for<'b> Namespace<'b, Color>
+        $body
+    }
+}
+
+#[macro_export] macro_rules! def_layout_modifier {
     (
         $Trait:ident ($fn_x:ident $fn_y:ident $fn_xy:ident),
         $Struct:ident { $X:ident $Y:ident $XY:ident } $kw_name:ident $name:literal
@@ -188,9 +207,7 @@ macro_rules! def_layout_modifier {
         }
 
         impl <S: Screen, I: Draw<S>, X: Into<Option<S::Unit>> + Copy> Draw<S> for $Struct<S, I, X> {
-            fn draw (&$self, $to: &mut S) -> Perhaps<XYWH<S::Unit>> {
-                $body
-            }
+            fn draw (&$self, $to: &mut S) -> Perhaps<XYWH<S::Unit>> { $body }
         }
 
         fn_kw_layout!($kw_name |state, output, expr| {
@@ -213,6 +230,43 @@ macro_rules! def_layout_modifier {
     }
 }
 
+#[macro_export] macro_rules! def_layout_modifier_flat {
+    (
+        $Trait:ident ($fn_x:ident $fn_y:ident $fn_xy:ident),
+        $Struct:ident { $X:ident $Y:ident $XY:ident } $kw_name:ident $name:literal
+        |$self:ident, $to:ident| $body:block
+    ) => {
+        impl<S: Screen, T: Draw<S>> $Trait<S> for T {}
+
+        pub trait $Trait<S: Screen>: Draw<S> + Sized {
+            fn $fn_x  (self) -> $Struct<S, Self> { $Struct::$X(self)  }
+            fn $fn_y  (self) -> $Struct<S, Self> { $Struct::$Y(self)  }
+            fn $fn_xy (self) -> $Struct<S, Self> { $Struct::$XY(self) }
+        }
+
+        pub enum $Struct<S: Screen, I: Draw<S>> {
+            __(PhantomData<S>), $X(I), $Y(I), $XY(I),
+        }
+
+        impl <S: Screen, I: Draw<S>> Draw<S> for $Struct<S, I> {
+            fn draw (&$self, $to: &mut S) -> Perhaps<XYWH<S::Unit>> { $body }
+        }
+
+        fn_kw_layout!($kw_name |state, output, expr| {
+            let head = expr.head()?;
+            let mut frags = head.src()?.unwrap_or_default().split("/");
+            Ok(matches!(frags.next(), Some($name)).then(||{
+                let args = expr.tail();
+                let arg0 = args.head();
+                eval_xy!(
+                    $name => expr, head, output, state, frags.next(),
+                    $fn_xy, $fn_x, $fn_y, arg0,
+                )
+            }).transpose()?.flatten())
+        });
+    }
+}
+
 mod area;    pub use self::area::*;
 mod axis;    pub use self::axis::*;
 mod azimuth; pub use self::azimuth::*;

src/layout/axis.rs

@@ -1,28 +1,23 @@
 use crate::*;
 
-/// Use whole drawing area along one or both axes.
-pub enum Full<T: Screen, I: Draw<T>> {
-    __(PhantomData<T>),
-    W(I),
-    H(I),
-    WH(I),
-}
-
-impl_draw!(<T: Screen, I: Draw<T>,>|self: Full<T, I>, to: T|{
-    let XYWH(x0, y0, w0, h0) = to.area();
-    let item = match self {
-        Self::W(i) => i, Self::H(i) => i, Self::WH(i) => i, _ => unreachable!()
-    };
-    let (x1, y1, w1, h1) = match self {
-        Self::W(..)  => (Some(x0), None,     Some(w0), None),
-        Self::H(..)  => (None,     Some(y0), None,     Some(h0)),
-        Self::WH(..) => (Some(x0), Some(y0), Some(w0), Some(h0)),
-        _ => unreachable!()
-    };
-    Ok(to.draw(to.area(), item)?.map(|XYWH(x2, y2, w2, h2)|XYWH(
-        x1.unwrap_or(x2), y1.unwrap_or(y2), w1.unwrap_or(w2), h1.unwrap_or(h2),
-    )))
-});
+def_layout_modifier_flat!(
+    LayoutFull (full_w full_h full_wh),
+    Full { W H WH } kw_full "full" |self, to| {
+        let XYWH(x0, y0, w0, h0) = to.area();
+        let item = match self {
+            Self::W(i) => i, Self::H(i) => i, Self::WH(i) => i, _ => unreachable!()
+        };
+        let (x1, y1, w1, h1) = match self {
+            Self::W(..)  => (Some(x0), None,     Some(w0), None),
+            Self::H(..)  => (None,     Some(y0), None,     Some(h0)),
+            Self::WH(..) => (Some(x0), Some(y0), Some(w0), Some(h0)),
+            _ => unreachable!()
+        };
+        Ok(to.draw(to.area(), item)?.map(|XYWH(x2, y2, w2, h2)|XYWH(
+            x1.unwrap_or(x2), y1.unwrap_or(y2), w1.unwrap_or(w2), h1.unwrap_or(h2),
+        )))
+    }
+);
 
 #[cfg(test)] #[test] fn test_layout_full () -> Usually<()> {
     assert_eq!(check_layout("1")?,           Some(XYWH(1u16, 1,  1,  1)));

src/lib.rs

@@ -29,37 +29,6 @@ pub(crate) use ::{
     std::marker::PhantomData
 };
 
-#[cfg(all(feature = "draw", feature = "eval"))]
-macro_rules! fn_kw_layout {
-    ($name:ident |$state:ident, $output: ident, $expr:ident| $body:block) => {
-        #[cfg(all(feature = "draw", feature = "eval"))]
-        pub fn $name <O: Screen, S> (
-            $state: &S, $output: &mut O, $expr: &str
-        ) -> Perhaps<XYWH<O::Unit>> where
-            S: Interpret<O, Option<XYWH<O::Unit>>>
-                + for<'b> Namespace<'b, bool>
-                + for<'b> Namespace<'b, O::Unit>
-                + for<'b> Namespace<'b, Option<O::Unit>>
-        $body
-    }
-}
-
-#[cfg(all(feature = "draw", feature = "eval", feature = "term"))]
-macro_rules! fn_kw_layout_tui {
-    ($name:ident |$state:ident, $output: ident, $expr:ident| $body:block) => {
-        #[cfg(all(feature = "draw", feature = "eval", feature = "term"))]
-        pub fn $name <S> (
-            $state: &S, $output: &mut Tui, $expr: &str
-        ) -> Perhaps<XYWH<u16>> where
-            S: Interpret<Tui, Option<XYWH<u16>>>
-                + for<'b> Namespace<'b, bool>
-                + for<'b> Namespace<'b, u16>
-                + for<'b> Namespace<'b, Option<u16>>
-                + for<'b> Namespace<'b, Color>
-        $body
-    }
-}
-
 #[cfg(feature = "lang")] pub use ::dizzle::{Usually, Perhaps};
 #[cfg(feature = "lang")] use ::dizzle::*;