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The deserialzation hack..

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This commit is contained in:
DasLixou 2024-08-21 15:05:56 +02:00
parent 1b6dec8f5a
commit cc71436187
12 changed files with 102 additions and 483 deletions
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243
crates/blenvy/src/components/fake_entity.rs
View File

@ -1,7 +1,62 @@
use std::{alloc::Layout, num::NonZeroU32};
use bevy::{
log::{info, warn},
reflect::ReflectDeserialize,
};
use serde::Deserialize;
const _: () = {
let real = Layout::new::<bevy::ecs::entity::Entity>();
let fake = Layout::new::<Entity>();
assert!(real.size() == fake.size());
assert!(real.align() == fake.align());
};
#[derive(Clone)]
#[repr(C, align(8))]
pub(crate) struct Entity {
pub name: Option<String>,
// Do not reorder the fields here. The ordering is equivalent to bevy's `Entity`
#[cfg(target_endian = "little")]
index: u32,
generation: NonZeroU32,
#[cfg(target_endian = "big")]
index: u32,
}
impl<'de> Deserialize<'de> for Entity {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: serde::Deserializer<'de>,
{
#[derive(Deserialize)]
#[serde(rename = "Entity")]
struct EntityData {
name: Option<String>,
}
let entity_data = EntityData::deserialize(deserializer)?;
let entity = if let Some(name) = entity_data.name {
info!("Found name {name}");
bevy::ecs::entity::Entity::PLACEHOLDER
} else {
warn!("No object was specified for Entity relation, using `Entity::PLACEHOLDER`.");
bevy::ecs::entity::Entity::PLACEHOLDER
};
Ok(unsafe {
// SAFETY: both have the same layout
core::mem::transmute(entity)
})
}
}
// This is expanded and modified from
// ```
// #[derive(Clone, Reflect)]
// #[reflect_value(Deserialize)]
// ```
const _: () = {
use bevy::reflect as bevy_reflect;
@ -9,9 +64,6 @@ const _: () = {
impl bevy_reflect::GetTypeRegistration for Entity
where
Self: ::core::any::Any + ::core::marker::Send + ::core::marker::Sync,
Option<String>: bevy_reflect::FromReflect
+ bevy_reflect::TypePath
+ bevy_reflect::__macro_exports::RegisterForReflection,
{
fn get_type_registration() -> bevy_reflect::TypeRegistration {
let mut registration = bevy_reflect::TypeRegistration::of::<Self>();
@ -22,45 +74,16 @@ const _: () = {
registration.insert::<bevy_reflect::ReflectFromReflect>(
bevy_reflect::FromType::<Self>::from_type(),
);
registration.insert::<ReflectDeserialize>(bevy_reflect::FromType::<Self>::from_type());
registration
}
#[inline(never)]
fn register_type_dependencies(registry: &mut bevy_reflect::TypeRegistry) {
<Option<String> as bevy_reflect::__macro_exports::RegisterForReflection>::__register(
registry,
);
}
}
impl bevy_reflect::Typed for Entity
where
Self: ::core::any::Any + ::core::marker::Send + ::core::marker::Sync,
Option<String>: bevy_reflect::FromReflect
+ bevy_reflect::TypePath
+ bevy_reflect::__macro_exports::RegisterForReflection,
{
fn type_info() -> &'static bevy_reflect::TypeInfo {
static CELL: bevy_reflect::utility::NonGenericTypeInfoCell =
bevy_reflect::utility::NonGenericTypeInfoCell::new();
CELL.get_or_set(|| {
bevy_reflect::TypeInfo::Struct(
bevy_reflect::StructInfo::new::<bevy::ecs::entity::Entity>(&[
// TODO: changed here
bevy_reflect::NamedField::new::<Option<String>>("name")
.with_custom_attributes(
bevy_reflect::attributes::CustomAttributes::default(),
),
])
.with_custom_attributes(bevy_reflect::attributes::CustomAttributes::default()),
)
})
}
}
impl bevy_reflect::TypePath for Entity
where
Self: ::core::any::Any + ::core::marker::Send + ::core::marker::Sync,
{
fn type_path() -> &'static str {
"bevy_ecs::entity::Entity"
"bevy_ecs::entity::Entity" // this is changed
}
fn short_type_path() -> &'static str {
"Entity"
@ -69,74 +92,29 @@ const _: () = {
::core::option::Option::Some("Entity")
}
fn crate_name() -> Option<&'static str> {
// this is changed
::core::option::Option::Some("bevy_ecs::entity".split(':').next().unwrap())
}
fn module_path() -> Option<&'static str> {
::core::option::Option::Some("bevy_ecs::entity")
::core::option::Option::Some("bevy_ecs::entity") // this is changed
}
}
impl bevy_reflect::Struct for Entity
impl bevy_reflect::Typed for Entity
where
Self: ::core::any::Any + ::core::marker::Send + ::core::marker::Sync,
Option<String>: bevy_reflect::FromReflect
+ bevy_reflect::TypePath
+ bevy_reflect::__macro_exports::RegisterForReflection,
{
fn field(&self, name: &str) -> ::core::option::Option<&dyn bevy_reflect::Reflect> {
match name {
"name" => ::core::option::Option::Some(&self.name),
_ => ::core::option::Option::None,
}
}
fn field_mut(
&mut self,
name: &str,
) -> ::core::option::Option<&mut dyn bevy_reflect::Reflect> {
match name {
"name" => ::core::option::Option::Some(&mut self.name),
_ => ::core::option::Option::None,
}
}
fn field_at(&self, index: usize) -> ::core::option::Option<&dyn bevy_reflect::Reflect> {
match index {
0usize => ::core::option::Option::Some(&self.name),
_ => ::core::option::Option::None,
}
}
fn field_at_mut(
&mut self,
index: usize,
) -> ::core::option::Option<&mut dyn bevy_reflect::Reflect> {
match index {
0usize => ::core::option::Option::Some(&mut self.name),
_ => ::core::option::Option::None,
}
}
fn name_at(&self, index: usize) -> ::core::option::Option<&str> {
match index {
0usize => ::core::option::Option::Some("name"),
_ => ::core::option::Option::None,
}
}
fn field_len(&self) -> usize {
1usize
}
fn iter_fields(&self) -> bevy_reflect::FieldIter {
bevy_reflect::FieldIter::new(self)
}
fn clone_dynamic(&self) -> bevy_reflect::DynamicStruct {
let mut dynamic: bevy_reflect::DynamicStruct = ::core::default::Default::default();
dynamic.set_represented_type(bevy_reflect::Reflect::get_represented_type_info(self));
dynamic.insert_boxed("name", bevy_reflect::Reflect::clone_value(&self.name));
dynamic
fn type_info() -> &'static bevy_reflect::TypeInfo {
static CELL: bevy_reflect::utility::NonGenericTypeInfoCell =
bevy_reflect::utility::NonGenericTypeInfoCell::new();
CELL.get_or_set(|| {
let info = bevy_reflect::ValueInfo::new::<bevy::ecs::entity::Entity>(); // this is changed
bevy_reflect::TypeInfo::Value(info)
})
}
}
impl bevy_reflect::Reflect for Entity
where
Self: ::core::any::Any + ::core::marker::Send + ::core::marker::Sync,
Option<String>: bevy_reflect::FromReflect
+ bevy_reflect::TypePath
+ bevy_reflect::__macro_exports::RegisterForReflection,
{
#[inline]
fn get_represented_type_info(
@ -172,7 +150,29 @@ const _: () = {
}
#[inline]
fn clone_value(&self) -> ::std::boxed::Box<dyn bevy_reflect::Reflect> {
::std::boxed::Box::new(bevy_reflect::Struct::clone_dynamic(self))
::std::boxed::Box::new(::core::clone::Clone::clone(self))
}
#[inline]
fn try_apply(
&mut self,
value: &dyn bevy_reflect::Reflect,
) -> ::core::result::Result<(), bevy_reflect::ApplyError> {
let any = bevy_reflect::Reflect::as_any(value);
if let ::core::option::Option::Some(value) =
<dyn ::core::any::Any>::downcast_ref::<Self>(any)
{
*self = ::core::clone::Clone::clone(value);
} else {
return ::core::result::Result::Err(bevy_reflect::ApplyError::MismatchedTypes {
from_type: ::core::convert::Into::into(
bevy_reflect::DynamicTypePath::reflect_type_path(value),
),
to_type: ::core::convert::Into::into(
<Self as bevy_reflect::TypePath>::type_path(),
),
});
}
::core::result::Result::Ok(())
}
#[inline]
fn set(
@ -183,75 +183,32 @@ const _: () = {
::core::result::Result::Ok(())
}
#[inline]
fn try_apply(
&mut self,
value: &dyn bevy_reflect::Reflect,
) -> ::core::result::Result<(), bevy_reflect::ApplyError> {
if let bevy_reflect::ReflectRef::Struct(struct_value) =
bevy_reflect::Reflect::reflect_ref(value)
{
for (i, value) in ::core::iter::Iterator::enumerate(
bevy_reflect::Struct::iter_fields(struct_value),
) {
let name = bevy_reflect::Struct::name_at(struct_value, i).unwrap();
if let ::core::option::Option::Some(v) =
bevy_reflect::Struct::field_mut(self, name)
{
bevy_reflect::Reflect::try_apply(v, value)?;
}
}
} else {
return ::core::result::Result::Err(bevy_reflect::ApplyError::MismatchedKinds {
from_kind: bevy_reflect::Reflect::reflect_kind(value),
to_kind: bevy_reflect::ReflectKind::Struct,
});
}
::core::result::Result::Ok(())
}
#[inline]
fn reflect_kind(&self) -> bevy_reflect::ReflectKind {
bevy_reflect::ReflectKind::Struct
bevy_reflect::ReflectKind::Value
}
#[inline]
fn reflect_ref(&self) -> bevy_reflect::ReflectRef {
bevy_reflect::ReflectRef::Struct(self)
bevy_reflect::ReflectRef::Value(self)
}
#[inline]
fn reflect_mut(&mut self) -> bevy_reflect::ReflectMut {
bevy_reflect::ReflectMut::Struct(self)
bevy_reflect::ReflectMut::Value(self)
}
#[inline]
fn reflect_owned(self: ::std::boxed::Box<Self>) -> bevy_reflect::ReflectOwned {
bevy_reflect::ReflectOwned::Struct(self)
}
fn reflect_partial_eq(
&self,
value: &dyn bevy_reflect::Reflect,
) -> ::core::option::Option<bool> {
bevy_reflect::struct_partial_eq(self, value)
bevy_reflect::ReflectOwned::Value(self)
}
}
impl bevy_reflect::FromReflect for Entity
where
Self: ::core::any::Any + ::core::marker::Send + ::core::marker::Sync,
Option<String>: bevy_reflect::FromReflect
+ bevy_reflect::TypePath
+ bevy_reflect::__macro_exports::RegisterForReflection,
{
fn from_reflect(reflect: &dyn bevy_reflect::Reflect) -> ::core::option::Option<Self> {
if let bevy_reflect::ReflectRef::Struct(__ref_struct) =
bevy_reflect::Reflect::reflect_ref(reflect)
{
::core::option::Option::Some(Self {
name: (|| {
<Option<String> as bevy_reflect::FromReflect>::from_reflect(
bevy_reflect::Struct::field(__ref_struct, "name")?,
)
})()?,
})
} else {
::core::option::Option::None
}
::core::option::Option::Some(::core::clone::Clone::clone(
<dyn ::core::any::Any>::downcast_ref::<Entity>(
<dyn bevy_reflect::Reflect>::as_any(reflect),
)?,
))
}
}
};

2
crates/blenvy/src/components/mod.rs
View File

@ -8,8 +8,6 @@ pub mod process_gltfs;
pub use process_gltfs::*;
mod fake_entity;
mod patch_entity;
mod reflect_ext;
pub mod blender_settings;

30
crates/blenvy/src/components/patch_entity.rs
View File

@ -1,30 +0,0 @@
use bevy::{
log::{info, warn},
prelude::Entity,
reflect::{FromReflect, Reflect},
};
use super::{fake_entity, reflect_ext};
pub fn patch_reflect_entity(reflect: &mut dyn Reflect) -> Option<Entity> {
let maybe_fake = fake_entity::Entity::from_reflect(reflect).map(|fake| fake.name.clone());
if let Some(reference) = maybe_fake {
let entity = if let Some(name) = reference {
info!("Found name {name}");
bevy::ecs::entity::Entity::PLACEHOLDER
} else {
warn!("No object was specified for Entity relation, using `Entity::PLACEHOLDER`.");
bevy::ecs::entity::Entity::PLACEHOLDER
};
Some(entity)
} else {
let reflect_mut = reflect.reflect_mut();
let iter = reflect_ext::DynamicFieldIterMut::from_reflect_mut(reflect_mut);
// TODO: recursively update
for f in iter {
patch_reflect_entity(f);
}
None
}
}

36
crates/blenvy/src/components/reflect_ext/array_ext.rs
View File

@ -1,36 +0,0 @@
use bevy::reflect::{Array, Reflect};
pub struct ArrayIterMut<'a> {
array: &'a mut dyn Array,
index: usize,
}
impl<'a> ArrayIterMut<'a> {
/// Creates a new [`ArrayIterMut`].
#[inline]
pub fn new(array: &'a mut dyn Array) -> ArrayIterMut {
ArrayIterMut { array, index: 0 }
}
}
impl<'a> Iterator for ArrayIterMut<'a> {
type Item = &'a mut dyn Reflect;
#[inline]
fn next(&mut self) -> Option<Self::Item> {
let value = self.array.get_mut(self.index);
self.index += value.is_some() as usize;
value.map(|v| unsafe {
// SAFETY: index can only correspond to one field
&mut *(v as *mut _)
})
}
#[inline]
fn size_hint(&self) -> (usize, Option<usize>) {
let size = self.array.len();
(size, Some(size))
}
}
impl<'a> ExactSizeIterator for ArrayIterMut<'a> {}

36
crates/blenvy/src/components/reflect_ext/enum_ext.rs
View File

@ -1,36 +0,0 @@
use bevy::reflect::{Enum, Reflect};
pub struct VariantFieldIterMut<'a> {
container: &'a mut dyn Enum,
index: usize,
}
impl<'a> VariantFieldIterMut<'a> {
pub fn new(container: &'a mut dyn Enum) -> Self {
Self {
container,
index: 0,
}
}
}
impl<'a> Iterator for VariantFieldIterMut<'a> {
// TODO: make this work with `VariantFieldMut` again
type Item = &'a mut dyn Reflect;
fn next(&mut self) -> Option<Self::Item> {
let value = self.container.field_at_mut(self.index);
self.index += value.is_some() as usize;
value.map(|v| unsafe {
// SAFETY: index can only correspond to one field
&mut *(v as *mut _)
})
}
fn size_hint(&self) -> (usize, Option<usize>) {
let size = self.container.field_len();
(size, Some(size))
}
}
impl<'a> ExactSizeIterator for VariantFieldIterMut<'a> {}

36
crates/blenvy/src/components/reflect_ext/list_ext.rs
View File

@ -1,36 +0,0 @@
use bevy::reflect::{List, Reflect};
pub struct ListIterMut<'a> {
list: &'a mut dyn List,
index: usize,
}
impl<'a> ListIterMut<'a> {
/// Creates a new [`ListIterMut`].
#[inline]
pub fn new(list: &'a mut dyn List) -> ListIterMut {
ListIterMut { list, index: 0 }
}
}
impl<'a> Iterator for ListIterMut<'a> {
type Item = &'a mut dyn Reflect;
#[inline]
fn next(&mut self) -> Option<Self::Item> {
let value = self.list.get_mut(self.index);
self.index += value.is_some() as usize;
value.map(|v| unsafe {
// SAFETY: index can only correspond to one field
&mut *(v as *mut _)
})
}
#[inline]
fn size_hint(&self) -> (usize, Option<usize>) {
let size = self.list.len();
(size, Some(size))
}
}
impl<'a> ExactSizeIterator for ListIterMut<'a> {}

34
crates/blenvy/src/components/reflect_ext/map_ext.rs
View File

@ -1,34 +0,0 @@
use bevy::reflect::{Map, Reflect};
pub struct MapIterMut<'a> {
map: &'a mut dyn Map,
index: usize,
}
impl<'a> MapIterMut<'a> {
/// Creates a new [`MapIterMut`].
#[inline]
pub fn new(map: &'a mut dyn Map) -> MapIterMut {
MapIterMut { map, index: 0 }
}
}
impl<'a> Iterator for MapIterMut<'a> {
type Item = (&'a dyn Reflect, &'a mut dyn Reflect);
fn next(&mut self) -> Option<Self::Item> {
let value = self.map.get_at_mut(self.index);
self.index += value.is_some() as usize;
value.map(|(k, v)| unsafe {
// SAFETY: index can only correspond to one field
(&*(k as *const _), &mut *(v as *mut _))
})
}
fn size_hint(&self) -> (usize, Option<usize>) {
let size = self.map.len();
(size, Some(size))
}
}
impl<'a> ExactSizeIterator for MapIterMut<'a> {}

56
crates/blenvy/src/components/reflect_ext/mod.rs
View File

@ -1,56 +0,0 @@
use bevy::reflect::{Reflect, ReflectMut};
pub mod array_ext;
pub mod enum_ext;
pub mod list_ext;
pub mod map_ext;
pub mod struct_ext;
pub mod tuple_ext;
pub mod tuple_struct_ext;
pub enum DynamicFieldIterMut<'a> {
Struct(struct_ext::FieldIterMut<'a>),
TupleStruct(tuple_struct_ext::TupleStructFieldIterMut<'a>),
Tuple(tuple_ext::TupleFieldIterMut<'a>),
List(list_ext::ListIterMut<'a>),
Array(array_ext::ArrayIterMut<'a>),
Map(map_ext::MapIterMut<'a>),
Enum(enum_ext::VariantFieldIterMut<'a>),
Value,
}
impl<'a> DynamicFieldIterMut<'a> {
pub fn from_reflect_mut(ref_mut: ReflectMut<'a>) -> Self {
match ref_mut {
ReflectMut::Struct(s) => DynamicFieldIterMut::Struct(struct_ext::FieldIterMut::new(s)),
ReflectMut::TupleStruct(s) => {
DynamicFieldIterMut::TupleStruct(tuple_struct_ext::TupleStructFieldIterMut::new(s))
}
ReflectMut::Tuple(t) => {
DynamicFieldIterMut::Tuple(tuple_ext::TupleFieldIterMut::new(t))
}
ReflectMut::List(l) => DynamicFieldIterMut::List(list_ext::ListIterMut::new(l)),
ReflectMut::Array(a) => DynamicFieldIterMut::Array(array_ext::ArrayIterMut::new(a)),
ReflectMut::Map(m) => DynamicFieldIterMut::Map(map_ext::MapIterMut::new(m)),
ReflectMut::Enum(e) => DynamicFieldIterMut::Enum(enum_ext::VariantFieldIterMut::new(e)),
ReflectMut::Value(_) => DynamicFieldIterMut::Value,
}
}
}
impl<'a> Iterator for DynamicFieldIterMut<'a> {
type Item = &'a mut dyn Reflect;
fn next(&mut self) -> Option<Self::Item> {
match self {
DynamicFieldIterMut::Struct(s) => s.next(),
DynamicFieldIterMut::TupleStruct(s) => s.next(),
DynamicFieldIterMut::Tuple(t) => t.next(),
DynamicFieldIterMut::List(l) => l.next(),
DynamicFieldIterMut::Array(a) => a.next(),
DynamicFieldIterMut::Map(m) => m.next().map(|(_, v)| v),
DynamicFieldIterMut::Enum(e) => e.next(),
DynamicFieldIterMut::Value => None,
}
}
}

36
crates/blenvy/src/components/reflect_ext/struct_ext.rs
View File

@ -1,36 +0,0 @@
use bevy::reflect::{Reflect, Struct};
/// An iterator over the field values of a struct.
pub struct FieldIterMut<'a> {
pub(crate) struct_val: &'a mut dyn Struct,
pub(crate) index: usize,
}
impl<'a> FieldIterMut<'a> {
pub fn new(value: &'a mut dyn Struct) -> Self {
FieldIterMut {
struct_val: value,
index: 0,
}
}
}
impl<'a> Iterator for FieldIterMut<'a> {
type Item = &'a mut dyn Reflect;
fn next(&mut self) -> Option<Self::Item> {
let value = self.struct_val.field_at_mut(self.index);
self.index += value.is_some() as usize;
value.map(|v| unsafe {
// SAFETY: index can only correspond to one field
&mut *(v as *mut _)
})
}
fn size_hint(&self) -> (usize, Option<usize>) {
let size = self.struct_val.field_len();
(size, Some(size))
}
}
impl<'a> ExactSizeIterator for FieldIterMut<'a> {}

35
crates/blenvy/src/components/reflect_ext/tuple_ext.rs
View File

@ -1,35 +0,0 @@
use bevy::reflect::{Reflect, Tuple};
pub struct TupleFieldIterMut<'a> {
pub(crate) tuple: &'a mut dyn Tuple,
pub(crate) index: usize,
}
impl<'a> TupleFieldIterMut<'a> {
pub fn new(value: &'a mut dyn Tuple) -> Self {
TupleFieldIterMut {
tuple: value,
index: 0,
}
}
}
impl<'a> Iterator for TupleFieldIterMut<'a> {
type Item = &'a mut dyn Reflect;
fn next(&mut self) -> Option<Self::Item> {
let value = self.tuple.field_mut(self.index);
self.index += value.is_some() as usize;
value.map(|v| unsafe {
// SAFETY: index can only correspond to one field
&mut *(v as *mut _)
})
}
fn size_hint(&self) -> (usize, Option<usize>) {
let size = self.tuple.field_len();
(size, Some(size))
}
}
impl<'a> ExactSizeIterator for TupleFieldIterMut<'a> {}

35
crates/blenvy/src/components/reflect_ext/tuple_struct_ext.rs
View File

@ -1,35 +0,0 @@
use bevy::reflect::{Reflect, TupleStruct};
pub struct TupleStructFieldIterMut<'a> {
pub(crate) tuple_struct: &'a mut dyn TupleStruct,
pub(crate) index: usize,
}
impl<'a> TupleStructFieldIterMut<'a> {
pub fn new(value: &'a mut dyn TupleStruct) -> Self {
TupleStructFieldIterMut {
tuple_struct: value,
index: 0,
}
}
}
impl<'a> Iterator for TupleStructFieldIterMut<'a> {
type Item = &'a mut dyn Reflect;
fn next(&mut self) -> Option<Self::Item> {
let value = self.tuple_struct.field_mut(self.index);
self.index += value.is_some() as usize;
value.map(|v| unsafe {
// SAFETY: index can only correspond to one field
&mut *(v as *mut _)
})
}
fn size_hint(&self) -> (usize, Option<usize>) {
let size = self.tuple_struct.field_len();
(size, Some(size))
}
}
impl<'a> ExactSizeIterator for TupleStructFieldIterMut<'a> {}

6
crates/blenvy/src/components/ronstring_to_reflect_component.rs
View File

@ -7,7 +7,7 @@ use bevy::utils::HashMap;
use ron::Value;
use serde::de::DeserializeSeed;
use super::{capitalize_first_letter, fake_entity, patch_entity::patch_reflect_entity};
use super::{capitalize_first_letter, fake_entity};
pub fn ronstring_to_reflect_component(
ron_string: &str,
@ -127,7 +127,7 @@ fn bevy_components_string_to_components(
let mut deserializer = ron::Deserializer::from_str(ron_string.as_str())
.expect("deserialzer should have been generated from string");
let reflect_deserializer = ReflectDeserializer::new(type_registry);
let mut component = reflect_deserializer
let component = reflect_deserializer
.deserialize(&mut deserializer)
.unwrap_or_else(|e| {
panic!(
@ -136,8 +136,6 @@ fn bevy_components_string_to_components(
)
});
patch_reflect_entity(component.as_mut());
debug!("component {:?}", component);
debug!("real type {:?}", component.get_represented_type_info());
components.push((component, type_registration.clone()));