Add Dynamic::UNIT.

src/dynamic.rs

@@ -532,11 +532,13 @@ impl Clone for Dynamic {
 impl Default for Dynamic {
     #[inline(always)]
     fn default() -> Self {
-        Self(Union::Unit(()))
+        Self::UNIT
     }
 }
 
 impl Dynamic {
+    pub const UNIT: Dynamic = Self(Union::Unit(()));
+
     /// Create a `Dynamic` from any type.  A `Dynamic` value is simply returned as is.
     ///
     /// # Safety

src/fn_call.rs

@@ -651,7 +651,7 @@ impl Engine {
 
         let script = script.trim();
         if script.is_empty() {
-            return Ok(().into());
+            return Ok(Dynamic::UNIT);
         }
 
         // Check for stack overflow

src/packages/array_basic.rs

@@ -54,7 +54,7 @@ macro_rules! gen_array_functions {
                         list.resize(len as usize, Dynamic::from(item));
                     }
 
-                    Ok(().into())
+                    Ok(Dynamic::UNIT)
                 }
             }
         })* }
@@ -367,7 +367,7 @@ mod array_functions {
         list: &mut Array,
         reducer: FnPtr,
     ) -> Result<Dynamic, Box<EvalAltResult>> {
-        let mut result: Dynamic = ().into();
+        let mut result: Dynamic = Dynamic::UNIT;
 
         for (i, item) in list.iter().enumerate() {
             result = reducer
@@ -434,7 +434,7 @@ mod array_functions {
         list: &mut Array,
         reducer: FnPtr,
     ) -> Result<Dynamic, Box<EvalAltResult>> {
-        let mut result: Dynamic = ().into();
+        let mut result: Dynamic = Dynamic::UNIT;
 
         for (i, item) in list.iter().enumerate().rev() {
             result = reducer
@@ -529,7 +529,7 @@ mod array_functions {
                 })
         });
 
-        Ok(().into())
+        Ok(Dynamic::UNIT)
     }
     #[rhai_fn(return_raw)]
     pub fn drain(

src/packages/string_more.rs

@@ -284,7 +284,7 @@ mod string_functions {
             }
         }
 
-        Ok(().into())
+        Ok(Dynamic::UNIT)
     }
     #[rhai_fn(name = "pad", return_raw)]
     pub fn pad_with_string(
@@ -328,7 +328,7 @@ mod string_functions {
             }
         }
 
-        Ok(().into())
+        Ok(Dynamic::UNIT)
     }
 
     #[cfg(not(feature = "no_index"))]

src/packages/time_basic.rs

@@ -150,7 +150,7 @@ mod time_functions {
         #[rhai_fn(return_raw, name = "+=")]
         pub fn add_assign(x: &mut Instant, seconds: FLOAT) -> Result<Dynamic, Box<EvalAltResult>> {
             *x = add_impl(*x, seconds)?;
-            Ok(().into())
+            Ok(Dynamic::UNIT)
         }
         #[rhai_fn(return_raw, name = "-")]
         pub fn subtract(x: Instant, seconds: FLOAT) -> Result<Dynamic, Box<EvalAltResult>> {
@@ -162,7 +162,7 @@ mod time_functions {
             seconds: FLOAT,
         ) -> Result<Dynamic, Box<EvalAltResult>> {
             *x = subtract_impl(*x, seconds)?;
-            Ok(().into())
+            Ok(Dynamic::UNIT)
         }
     }
 
@@ -204,7 +204,7 @@ mod time_functions {
     #[rhai_fn(return_raw, name = "+=")]
     pub fn add_assign(x: &mut Instant, seconds: INT) -> Result<Dynamic, Box<EvalAltResult>> {
         *x = add_impl(*x, seconds)?;
-        Ok(().into())
+        Ok(Dynamic::UNIT)
     }
     #[rhai_fn(return_raw, name = "-")]
     pub fn subtract(x: Instant, seconds: INT) -> Result<Dynamic, Box<EvalAltResult>> {
@@ -213,7 +213,7 @@ mod time_functions {
     #[rhai_fn(return_raw, name = "-=")]
     pub fn subtract_assign(x: &mut Instant, seconds: INT) -> Result<Dynamic, Box<EvalAltResult>> {
         *x = subtract_impl(*x, seconds)?;
-        Ok(().into())
+        Ok(Dynamic::UNIT)
     }
 
     #[rhai_fn(name = "==")]

src/parser.rs

@@ -957,7 +957,7 @@ fn parse_primary(
             let var_name_def = IdentX::new(state.get_interned_string(s), settings.pos);
             Expr::Variable(Box::new((None, None, 0, var_name_def)))
         }
-        // Module qualification
+        // Namespace qualification
         #[cfg(not(feature = "no_module"))]
         Token::Identifier(s) if *next_token == Token::DoubleColon => {
             // Once the identifier consumed we must enable next variables capturing

src/serde_impl/ser.rs

@@ -247,7 +247,7 @@ impl Serializer for &mut DynamicSerializer {
     }
 
     fn serialize_none(self) -> Result<Self::Ok, Box<EvalAltResult>> {
-        Ok(().into())
+        Ok(Dynamic::UNIT)
     }
 
     fn serialize_some<T: ?Sized + Serialize>(
@@ -258,7 +258,7 @@ impl Serializer for &mut DynamicSerializer {
     }
 
     fn serialize_unit(self) -> Result<Self::Ok, Box<EvalAltResult>> {
-        Ok(().into())
+        Ok(Dynamic::UNIT)
     }
 
     fn serialize_unit_struct(self, _name: &'static str) -> Result<Self::Ok, Box<EvalAltResult>> {