add ReflectDefault to std types (bevyengine#6429)

# Objective - `ReflectDefault` can be used to create default values for reflected types - `std` primitives that are `Default`-constructable should register `ReflectDefault` ## Solution - register `ReflectDefault`
ItsDoot · Feb 1, 2023 · 2cef2fe · 2cef2fe
1 parent 6a21a76
commit 2cef2fe
Showing 1 changed file with 83 additions and 19 deletions.
diff --git a/crates/bevy_reflect/src/impls/std.rs b/crates/bevy_reflect/src/impls/std.rs
@@ -1,3 +1,4 @@
+use crate::std_traits::ReflectDefault;
 use crate::{self as bevy_reflect, ReflectFromPtr};
 use crate::{
     map_apply, map_partial_eq, Array, ArrayInfo, ArrayIter, DynamicEnum, DynamicMap, Enum,
@@ -25,24 +26,80 @@ use std::{
     path::PathBuf,
 };
 
-impl_reflect_value!(bool(Debug, Hash, PartialEq, Serialize, Deserialize));
-impl_reflect_value!(char(Debug, Hash, PartialEq, Serialize, Deserialize));
-impl_reflect_value!(u8(Debug, Hash, PartialEq, Serialize, Deserialize));
-impl_reflect_value!(u16(Debug, Hash, PartialEq, Serialize, Deserialize));
-impl_reflect_value!(u32(Debug, Hash, PartialEq, Serialize, Deserialize));
-impl_reflect_value!(u64(Debug, Hash, PartialEq, Serialize, Deserialize));
-impl_reflect_value!(u128(Debug, Hash, PartialEq, Serialize, Deserialize));
-impl_reflect_value!(usize(Debug, Hash, PartialEq, Serialize, Deserialize));
-impl_reflect_value!(i8(Debug, Hash, PartialEq, Serialize, Deserialize));
-impl_reflect_value!(i16(Debug, Hash, PartialEq, Serialize, Deserialize));
-impl_reflect_value!(i32(Debug, Hash, PartialEq, Serialize, Deserialize));
-impl_reflect_value!(i64(Debug, Hash, PartialEq, Serialize, Deserialize));
-impl_reflect_value!(i128(Debug, Hash, PartialEq, Serialize, Deserialize));
-impl_reflect_value!(isize(Debug, Hash, PartialEq, Serialize, Deserialize));
-impl_reflect_value!(f32(Debug, PartialEq, Serialize, Deserialize));
-impl_reflect_value!(f64(Debug, PartialEq, Serialize, Deserialize));
-impl_reflect_value!(String(Debug, Hash, PartialEq, Serialize, Deserialize));
-impl_reflect_value!(PathBuf(Debug, Hash, PartialEq, Serialize, Deserialize));
+impl_reflect_value!(bool(
+    Debug,
+    Hash,
+    PartialEq,
+    Serialize,
+    Deserialize,
+    Default
+));
+impl_reflect_value!(char(
+    Debug,
+    Hash,
+    PartialEq,
+    Serialize,
+    Deserialize,
+    Default
+));
+impl_reflect_value!(u8(Debug, Hash, PartialEq, Serialize, Deserialize, Default));
+impl_reflect_value!(u16(Debug, Hash, PartialEq, Serialize, Deserialize, Default));
+impl_reflect_value!(u32(Debug, Hash, PartialEq, Serialize, Deserialize, Default));
+impl_reflect_value!(u64(Debug, Hash, PartialEq, Serialize, Deserialize, Default));
+impl_reflect_value!(u128(
+    Debug,
+    Hash,
+    PartialEq,
+    Serialize,
+    Deserialize,
+    Default
+));
+impl_reflect_value!(usize(
+    Debug,
+    Hash,
+    PartialEq,
+    Serialize,
+    Deserialize,
+    Default
+));
+impl_reflect_value!(i8(Debug, Hash, PartialEq, Serialize, Deserialize, Default));
+impl_reflect_value!(i16(Debug, Hash, PartialEq, Serialize, Deserialize, Default));
+impl_reflect_value!(i32(Debug, Hash, PartialEq, Serialize, Deserialize, Default));
+impl_reflect_value!(i64(Debug, Hash, PartialEq, Serialize, Deserialize, Default));
+impl_reflect_value!(i128(
+    Debug,
+    Hash,
+    PartialEq,
+    Serialize,
+    Deserialize,
+    Default
+));
+impl_reflect_value!(isize(
+    Debug,
+    Hash,
+    PartialEq,
+    Serialize,
+    Deserialize,
+    Default
+));
+impl_reflect_value!(f32(Debug, PartialEq, Serialize, Deserialize, Default));
+impl_reflect_value!(f64(Debug, PartialEq, Serialize, Deserialize, Default));
+impl_reflect_value!(String(
+    Debug,
+    Hash,
+    PartialEq,
+    Serialize,
+    Deserialize,
+    Default
+));
+impl_reflect_value!(PathBuf(
+    Debug,
+    Hash,
+    PartialEq,
+    Serialize,
+    Deserialize,
+    Default
+));
 impl_reflect_value!(Result<T: Clone + Reflect + 'static, E: Clone + Reflect + 'static>());
 impl_reflect_value!(HashSet<T: Hash + Eq + Clone + Send + Sync + 'static>());
 impl_reflect_value!(Range<T: Clone + Send + Sync + 'static>());
@@ -51,7 +108,14 @@ impl_reflect_value!(RangeFrom<T: Clone + Send + Sync + 'static>());
 impl_reflect_value!(RangeTo<T: Clone + Send + Sync + 'static>());
 impl_reflect_value!(RangeToInclusive<T: Clone + Send + Sync + 'static>());
 impl_reflect_value!(RangeFull());
-impl_reflect_value!(Duration(Debug, Hash, PartialEq, Serialize, Deserialize));
+impl_reflect_value!(Duration(
+    Debug,
+    Hash,
+    PartialEq,
+    Serialize,
+    Deserialize,
+    Default
+));
 impl_reflect_value!(Instant(Debug, Hash, PartialEq));
 impl_reflect_value!(NonZeroI128(Debug, Hash, PartialEq, Serialize, Deserialize));
 impl_reflect_value!(NonZeroU128(Debug, Hash, PartialEq, Serialize, Deserialize));