tweak dsl

src/containers/bitmap.rs

@@ -125,8 +125,10 @@ wrap_methods!(
     /// Gets an unsafe reference to the data of the [Bitmap] instance.
     ///
     /// The returned memory is valid for the lifetime of the bitmap.
-    mut fn data_ref_mut() -> ByteSlice;
-    |slice| unsafe { ByteSlice::from_slice(slice) };
+    mut fn data_ref_mut() -> ByteSlice {
+
+        return(slice) { unsafe { ByteSlice::from_slice(slice) } };
+    };
 );
 
 /// Consumes the Bitmap and returns the contained BitVec.

src/containers/bitvec.rs

@@ -53,8 +53,10 @@ wrap_methods!(
     /// # Panics
     ///
     /// - when accessing `index` out of bounds
-    ref fn get(index: usize) -> bool;
-    |result| result.map(|x| *x).unwrap_or(false);
+    ref fn get(index: usize) -> bool {
+        return(result) { result.map(|x| *x).unwrap_or(false) };
+    };
+
 
     /// Sets the value of a bit.
     ///
@@ -84,8 +86,9 @@ wrap_methods!(
     /// Gets an unsafe reference to the data of the [DisplayBitVec] instance.
     ///
     /// The returned memory is valid for the lifetime of the bitvec.
-    mut fn as_raw_mut_slice() -> ByteSlice;
-    |slice| unsafe { ByteSlice::from_slice(slice) };
+    mut fn as_raw_mut_slice() -> ByteSlice {
+        return(slice) { unsafe { ByteSlice::from_slice(slice) } };
+    };
 );
 
 /// Creates a [BitVecCommand] and immediately turns that into a [Packet].

src/containers/brightness_grid.rs

@@ -100,12 +100,13 @@ wrap_methods!(
     /// Gets an unsafe reference to the data of the instance.
     ///
     /// The returned memory is valid for the lifetime of the grid.
-    mut fn data_ref_mut() -> ByteSlice;
-    |br_slice| unsafe {
+    mut fn data_ref_mut() -> ByteSlice {
+        return(br_slice) { unsafe {
             //noinspection RsAssertEqual
             const _: () = assert!(size_of::<Brightness>() == 1);
 
             ByteSlice::from_slice(transmute::<&mut [Brightness], &mut [u8]>(br_slice))
+        }};
     };
 );
 

src/containers/char_grid.rs

@@ -54,8 +54,9 @@ wrap_methods!(
     /// # Panics
     ///
     /// - when accessing `x` or `y` out of bounds
-    ref fn get(x: usize, y: usize) -> u32;
-    | char | char as u32;
+    ref fn get(x: usize, y: usize) -> u32 {
+        return(char) { char as u32 };
+    };
 
     /// Sets the value of the specified position in the grid.
     ///
@@ -70,8 +71,9 @@ wrap_methods!(
     ///
     /// - when accessing `x` or `y` out of bounds
     /// - when providing values that cannot be converted to Rust's `char`.
-    mut fn set(x: usize, y: usize, value: u32);
-    let value = char::from_u32(value).unwrap();
+    mut fn set(x: usize, y: usize, value: u32) {
+        prepare(value) { char::from_u32(value).unwrap() };
+    };
 
     /// Sets the value of all cells in the grid.
     ///
@@ -79,8 +81,9 @@ wrap_methods!(
     ///
     /// - `value`: the value to set all cells to
     /// - when providing values that cannot be converted to Rust's `char`.
-    mut fn fill(value: u32);
-    let value = char::from_u32(value).unwrap();
+    mut fn fill(value: u32) {
+        prepare(value) { char::from_u32(value).unwrap() };
+    };
 
     /// Gets the width of the grid.
     ref fn width() -> usize;

src/containers/cp437_grid.rs

@@ -77,8 +77,9 @@ wrap_methods!(
     /// Gets an unsafe reference to the data of the grid.
     ///
     /// The returned memory is valid for the lifetime of the instance.
-    mut fn data_ref_mut() -> ByteSlice;
-    | slice | unsafe { ByteSlice::from_slice(slice) };
+    mut fn data_ref_mut() -> ByteSlice {
+        return(slice) { unsafe { ByteSlice::from_slice(slice) } };
+    };
 );
 
 /// Creates a [Cp437GridCommand] and immediately turns that into a [Packet].

src/macros.rs

@@ -41,8 +41,12 @@ macro_rules! wrap_methods {
         $(
             $(#[$meta:meta])+
             $ref_or_mut:ident fn $function:ident($($param_name:ident: $param_type:ty),*)
-            $(-> $return_type:ty$(; |$it:ident | $return_expr:expr)?)?;
-            $($(let $param_let_name:ident = $param_let_expr:expr);+;)?
+            $(-> $return_type:ty)?
+            $({
+                $($(prepare($param_let_name:ident) $param_let_expr:block);+;)?
+                $(return($it:ident) $return_expr:block;)?
+            })?
+            ;
         )*
     ) => {
         paste::paste! {
@@ -57,9 +61,9 @@ macro_rules! wrap_methods {
                 $($param_name: $param_type),*
             ) $(-> $return_type)? {
                 let instance = unsafe { $crate::macros:: [< nonnull_as_ $ref_or_mut >] !(instance) };
-                $(
+                $($(
                     $(let $param_let_name = $param_let_expr;)*
-                )?
+                )?)?
                 #[allow(
                     unused_variables,
                     reason = "This variable may not be used depending on macro variables" )]
@@ -69,8 +73,8 @@ macro_rules! wrap_methods {
                     let $it = result;
                     let result = $return_expr;
                     )?
-                return result;
                 )?
+                return result;
             }
             )*
         }