diff options
Diffstat (limited to 'engine-reflection')
| -rw-r--r-- | engine-reflection/src/lib.rs | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/engine-reflection/src/lib.rs b/engine-reflection/src/lib.rs index 4ef688c..d9e2c72 100644 --- a/engine-reflection/src/lib.rs +++ b/engine-reflection/src/lib.rs @@ -109,6 +109,8 @@ pub struct Struct pub fields: &'static [Field], pub get_default_value: fn() -> Option<DefaultValueFn>, pub cast_dyn_any: CastDynAnyFn, + pub try_get_field: + fn(target: &dyn Any, field_index: usize) -> Result<&dyn Any, GetError>, pub try_get_field_mut: fn(target: &mut dyn Any, field_index: usize) -> Result<&mut dyn Any, GetError>, } @@ -171,6 +173,9 @@ pub struct EnumVariant fields: &mut dyn Iterator<Item = Box<dyn Any>>, ) -> Result<(), EnumVariantWriteNewToError>, + pub try_get_field: + fn(target: &dyn Any, field_index: usize) -> Result<&dyn Any, GetError>, + pub try_get_field_mut: fn(target: &mut dyn Any, field_index: usize) -> Result<&mut dyn Any, GetError>, } @@ -288,6 +293,7 @@ pub struct Array pub get_item_type_name: FnWithDebug<&'static str>, pub length: usize, pub cast_dyn_any: CastDynAnyFn, + pub try_get_item: fn(target: &dyn Any, index: usize) -> Result<&dyn Any, GetError>, pub try_get_item_mut: fn(target: &mut dyn Any, index: usize) -> Result<&mut dyn Any, GetError>, } @@ -435,6 +441,15 @@ unsafe impl<T: Reflection, const LEN: usize> Reflection for [T; LEN] get_item_type_name: FnWithDebug::new(|| type_name::<T>()), length: LEN, cast_dyn_any: |ptr| ptr.cast::<Self>(), + try_get_item: |target, index| { + let target = target + .downcast_ref::<Self>() + .ok_or(GetError::WrongTargetType)?; + + let item = target.get(index).ok_or(GetError::IndexOutOfBounds)?; + + Ok(item) + }, try_get_item_mut: |target, index| { let target = target .downcast_mut::<Self>() @@ -507,6 +522,21 @@ unsafe impl<T: Reflection> Reflection for Option<T> Ok(()) }, + try_get_field: |target, field_index| { + if field_index != 0 { + return Err(GetError::IndexOutOfBounds); + } + + let target = target + .downcast_ref::<Self>() + .ok_or(GetError::WrongTargetType)?; + + let Some(value_field) = target else { + return Err(GetError::WrongTargetEnumVariant); + }; + + Ok(value_field) + }, try_get_field_mut: |target, field_index| { if field_index != 0 { return Err(GetError::IndexOutOfBounds); @@ -539,6 +569,7 @@ unsafe impl<T: Reflection> Reflection for Option<T> Ok(()) }, + try_get_field: |_, _| Err(GetError::IndexOutOfBounds), try_get_field_mut: |_, _| Err(GetError::IndexOutOfBounds), }, ], |