pub use fyrox_core_derive::Visit;
pub mod prelude {
pub use super::{Visit, VisitError, VisitResult, Visitor};
}
use crate::{
algebra::{
Complex, Const, Matrix, Matrix2, Matrix3, Matrix4, Quaternion, RawStorage, RawStorageMut,
SVector, Scalar, UnitComplex, UnitQuaternion, Vector2, Vector3, Vector4, U1,
},
io::{self, FileLoadError},
pool::{Handle, Pool},
replace_slashes,
};
use byteorder::{LittleEndian, ReadBytesExt, WriteBytesExt};
use fxhash::FxHashMap;
use std::{
any::Any,
cell::{Cell, RefCell},
collections::{hash_map::Entry, HashMap, HashSet},
fmt::{Display, Formatter},
fs::File,
hash::{BuildHasher, Hash},
io::{BufWriter, Cursor, Read, Write},
ops::{Deref, DerefMut, Range},
path::{Path, PathBuf},
rc::Rc,
string::FromUtf8Error,
sync::{Arc, Mutex, RwLock},
time::Duration,
};
use uuid::Uuid;
pub enum FieldKind {
Bool(bool),
U8(u8),
I8(i8),
U16(u16),
I16(i16),
U32(u32),
I32(i32),
U64(u64),
I64(i64),
F32(f32),
F64(f64),
UnitQuaternion(UnitQuaternion<f32>),
Matrix4(Matrix4<f32>),
Data(Vec<u8>),
Matrix3(Matrix3<f32>),
Uuid(Uuid),
UnitComplex(UnitComplex<f32>),
PodArray {
type_id: u8,
element_size: u32,
bytes: Vec<u8>,
},
Matrix2(Matrix2<f32>),
Vector2F32(Vector2<f32>),
Vector3F32(Vector3<f32>),
Vector4F32(Vector4<f32>),
Vector2F64(Vector2<f64>),
Vector3F64(Vector3<f64>),
Vector4F64(Vector4<f64>),
Vector2U8(Vector2<u8>),
Vector3U8(Vector3<u8>),
Vector4U8(Vector4<u8>),
Vector2I8(Vector2<i8>),
Vector3I8(Vector3<i8>),
Vector4I8(Vector4<i8>),
Vector2U16(Vector2<u16>),
Vector3U16(Vector3<u16>),
Vector4U16(Vector4<u16>),
Vector2I16(Vector2<i16>),
Vector3I16(Vector3<i16>),
Vector4I16(Vector4<i16>),
Vector2U32(Vector2<u32>),
Vector3U32(Vector3<u32>),
Vector4U32(Vector4<u32>),
Vector2I32(Vector2<i32>),
Vector3I32(Vector3<i32>),
Vector4I32(Vector4<i32>),
Vector2U64(Vector2<u64>),
Vector3U64(Vector3<u64>),
Vector4U64(Vector4<u64>),
Vector2I64(Vector2<i64>),
Vector3I64(Vector3<i64>),
Vector4I64(Vector4<i64>),
}
pub trait Pod: Copy {
fn type_id() -> u8;
}
impl Pod for u8 {
fn type_id() -> u8 {
0
}
}
impl Pod for i8 {
fn type_id() -> u8 {
1
}
}
impl Pod for u16 {
fn type_id() -> u8 {
2
}
}
impl Pod for i16 {
fn type_id() -> u8 {
3
}
}
impl Pod for u32 {
fn type_id() -> u8 {
4
}
}
impl Pod for i32 {
fn type_id() -> u8 {
5
}
}
impl Pod for u64 {
fn type_id() -> u8 {
6
}
}
impl Pod for i64 {
fn type_id() -> u8 {
7
}
}
impl Pod for f32 {
fn type_id() -> u8 {
8
}
}
impl Pod for f64 {
fn type_id() -> u8 {
9
}
}
pub struct PodVecView<'a, T: Pod> {
type_id: u8,
vec: &'a mut Vec<T>,
}
impl<'a, T: Pod> PodVecView<'a, T> {
pub fn from_pod_vec(vec: &'a mut Vec<T>) -> Self {
Self {
type_id: T::type_id(),
vec,
}
}
}
impl<'a, T: Pod> Visit for PodVecView<'a, T> {
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
if visitor.reading {
if let Some(field) = visitor.find_field(name) {
match &field.kind {
FieldKind::PodArray {
type_id,
element_size,
bytes,
} => {
if *type_id == self.type_id {
let mut owned_bytes = bytes.clone();
let len = owned_bytes.len() / (*element_size as usize);
*self.vec = unsafe {
Vec::from_raw_parts(owned_bytes.as_mut_ptr() as *mut T, len, len)
};
std::mem::forget(owned_bytes);
Ok(())
} else {
Err(VisitError::TypeMismatch)
}
}
_ => Err(VisitError::FieldTypeDoesNotMatch),
}
} else {
Err(VisitError::FieldDoesNotExist(name.to_owned()))
}
} else if visitor.find_field(name).is_some() {
Err(VisitError::FieldAlreadyExists(name.to_owned()))
} else {
let node = visitor.current_node();
node.fields.push(Field::new(
name,
FieldKind::PodArray {
type_id: T::type_id(),
element_size: std::mem::size_of::<T>() as u32,
bytes: unsafe {
let mut data = self.vec.clone();
let bytes = Vec::from_raw_parts(
data.as_mut_ptr() as *mut u8,
data.len() * std::mem::size_of::<T>(),
data.capacity() * std::mem::size_of::<T>(),
);
std::mem::forget(data);
bytes
},
},
));
Ok(())
}
}
}
impl FieldKind {
fn as_string(&self) -> String {
match self {
Self::Bool(data) => format!("<bool = {}>, ", data),
Self::U8(data) => format!("<u8 = {}>, ", data),
Self::I8(data) => format!("<i8 = {}>, ", data),
Self::U16(data) => format!("<u16 = {}>, ", data),
Self::I16(data) => format!("<i16 = {}>, ", data),
Self::U32(data) => format!("<u32 = {}>, ", data),
Self::I32(data) => format!("<i32 = {}>, ", data),
Self::U64(data) => format!("<u64 = {}>, ", data),
Self::I64(data) => format!("<i64 = {}>, ", data),
Self::F32(data) => format!("<f32 = {}>, ", data),
Self::F64(data) => format!("<f64 = {}>, ", data),
Self::Vector2F32(data) => format!("<vec2f32 = {}; {}>, ", data.x, data.y),
Self::Vector3F32(data) => format!("<vec3f32 = {}; {}; {}>, ", data.x, data.y, data.z),
Self::Vector4F32(data) => {
format!(
"<vec4f32 = {}; {}; {}; {}>, ",
data.x, data.y, data.z, data.w
)
}
Self::Vector2F64(data) => format!("<vec2f64 = {}; {}>, ", data.x, data.y),
Self::Vector3F64(data) => format!("<vec3f64 = {}; {}; {}>, ", data.x, data.y, data.z),
Self::Vector4F64(data) => {
format!(
"<vec4f64 = {}; {}; {}; {}>, ",
data.x, data.y, data.z, data.w
)
}
Self::Vector2I8(data) => format!("<vec2i8 = {}; {}>, ", data.x, data.y),
Self::Vector3I8(data) => format!("<vec3i8 = {}; {}; {}>, ", data.x, data.y, data.z),
Self::Vector4I8(data) => {
format!(
"<vec4i8 = {}; {}; {}; {}>, ",
data.x, data.y, data.z, data.w
)
}
Self::Vector2U8(data) => format!("<vec2u8 = {}; {}>, ", data.x, data.y),
Self::Vector3U8(data) => format!("<vec3u8 = {}; {}; {}>, ", data.x, data.y, data.z),
Self::Vector4U8(data) => {
format!(
"<vec4u8 = {}; {}; {}; {}>, ",
data.x, data.y, data.z, data.w
)
}
Self::Vector2I16(data) => format!("<vec2i16 = {}; {}>, ", data.x, data.y),
Self::Vector3I16(data) => format!("<vec3i16 = {}; {}; {}>, ", data.x, data.y, data.z),
Self::Vector4I16(data) => {
format!(
"<vec4i16 = {}; {}; {}; {}>, ",
data.x, data.y, data.z, data.w
)
}
Self::Vector2U16(data) => format!("<vec2u16 = {}; {}>, ", data.x, data.y),
Self::Vector3U16(data) => format!("<vec3u16 = {}; {}; {}>, ", data.x, data.y, data.z),
Self::Vector4U16(data) => {
format!(
"<vec4u16 = {}; {}; {}; {}>, ",
data.x, data.y, data.z, data.w
)
}
Self::Vector2I32(data) => format!("<vec2i32 = {}; {}>, ", data.x, data.y),
Self::Vector3I32(data) => format!("<vec3i32 = {}; {}; {}>, ", data.x, data.y, data.z),
Self::Vector4I32(data) => {
format!(
"<vec4i32 = {}; {}; {}; {}>, ",
data.x, data.y, data.z, data.w
)
}
Self::Vector2U32(data) => format!("<vec2u32 = {}; {}>, ", data.x, data.y),
Self::Vector3U32(data) => format!("<vec3u32 = {}; {}; {}>, ", data.x, data.y, data.z),
Self::Vector4U32(data) => {
format!(
"<vec4u32 = {}; {}; {}; {}>, ",
data.x, data.y, data.z, data.w
)
}
Self::Vector2I64(data) => format!("<vec2i64 = {}; {}>, ", data.x, data.y),
Self::Vector3I64(data) => format!("<vec3i64 = {}; {}; {}>, ", data.x, data.y, data.z),
Self::Vector4I64(data) => {
format!(
"<vec4i64 = {}; {}; {}; {}>, ",
data.x, data.y, data.z, data.w
)
}
Self::Vector2U64(data) => format!("<vec2u64 = {}; {}>, ", data.x, data.y),
Self::Vector3U64(data) => format!("<vec3u64 = {}; {}; {}>, ", data.x, data.y, data.z),
Self::Vector4U64(data) => {
format!(
"<vec4u64 = {}; {}; {}; {}>, ",
data.x, data.y, data.z, data.w
)
}
Self::UnitQuaternion(data) => {
format!("<quat = {}; {}; {}; {}>, ", data.i, data.j, data.k, data.w)
}
Self::Matrix4(data) => {
let mut out = String::from("<mat4 = ");
for f in data.iter() {
out += format!("{}; ", f).as_str();
}
out
}
Self::Data(data) => {
let out = match String::from_utf8(data.clone()) {
Ok(s) => s,
Err(_) => base64::encode(data),
};
format!("<data = {}>, ", out)
}
Self::Matrix3(data) => {
let mut out = String::from("<mat3 = ");
for f in data.iter() {
out += format!("{}; ", f).as_str();
}
out
}
Self::Uuid(uuid) => uuid.to_string(),
Self::UnitComplex(data) => {
format!("<complex = {}; {}>, ", data.re, data.im)
}
FieldKind::PodArray {
type_id,
element_size,
bytes,
} => {
let base64_encoded = base64::encode(bytes);
format!(
"<podarray = {}; {}; [{}]>",
type_id, element_size, base64_encoded
)
}
Self::Matrix2(data) => {
let mut out = String::from("<mat2 = ");
for f in data.iter() {
out += format!("{}; ", f).as_str();
}
out
}
}
}
}
macro_rules! impl_field_data {
($type_name:ty, $($kind:tt)*) => {
impl Visit for $type_name {
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
if visitor.reading {
if let Some(field) = visitor.find_field(name) {
match field.kind {
$($kind)*(data) => {
*self = data.clone();
Ok(())
},
_ => Err(VisitError::FieldTypeDoesNotMatch)
}
} else {
Err(VisitError::FieldDoesNotExist(name.to_owned()))
}
} else if visitor.find_field(name).is_some() {
Err(VisitError::FieldAlreadyExists(name.to_owned()))
} else {
let node = visitor.current_node();
node.fields.push(Field::new(name, $($kind)*(self.clone())));
Ok(())
}
}
}
};
}
pub struct Data<'a> {
vec: &'a mut Vec<u8>,
}
impl_field_data!(u64, FieldKind::U64);
impl_field_data!(i64, FieldKind::I64);
impl_field_data!(u32, FieldKind::U32);
impl_field_data!(i32, FieldKind::I32);
impl_field_data!(u16, FieldKind::U16);
impl_field_data!(i16, FieldKind::I16);
impl_field_data!(u8, FieldKind::U8);
impl_field_data!(i8, FieldKind::I8);
impl_field_data!(f32, FieldKind::F32);
impl_field_data!(f64, FieldKind::F64);
impl_field_data!(UnitQuaternion<f32>, FieldKind::UnitQuaternion);
impl_field_data!(Matrix4<f32>, FieldKind::Matrix4);
impl_field_data!(bool, FieldKind::Bool);
impl_field_data!(Matrix3<f32>, FieldKind::Matrix3);
impl_field_data!(Uuid, FieldKind::Uuid);
impl_field_data!(UnitComplex<f32>, FieldKind::UnitComplex);
impl_field_data!(Matrix2<f32>, FieldKind::Matrix2);
impl_field_data!(Vector2<f32>, FieldKind::Vector2F32);
impl_field_data!(Vector3<f32>, FieldKind::Vector3F32);
impl_field_data!(Vector4<f32>, FieldKind::Vector4F32);
impl_field_data!(Vector2<f64>, FieldKind::Vector2F64);
impl_field_data!(Vector3<f64>, FieldKind::Vector3F64);
impl_field_data!(Vector4<f64>, FieldKind::Vector4F64);
impl_field_data!(Vector2<i8>, FieldKind::Vector2I8);
impl_field_data!(Vector3<i8>, FieldKind::Vector3I8);
impl_field_data!(Vector4<i8>, FieldKind::Vector4I8);
impl_field_data!(Vector2<u8>, FieldKind::Vector2U8);
impl_field_data!(Vector3<u8>, FieldKind::Vector3U8);
impl_field_data!(Vector4<u8>, FieldKind::Vector4U8);
impl_field_data!(Vector2<i16>, FieldKind::Vector2I16);
impl_field_data!(Vector3<i16>, FieldKind::Vector3I16);
impl_field_data!(Vector4<i16>, FieldKind::Vector4I16);
impl_field_data!(Vector2<u16>, FieldKind::Vector2U16);
impl_field_data!(Vector3<u16>, FieldKind::Vector3U16);
impl_field_data!(Vector4<u16>, FieldKind::Vector4U16);
impl_field_data!(Vector2<i32>, FieldKind::Vector2I32);
impl_field_data!(Vector3<i32>, FieldKind::Vector3I32);
impl_field_data!(Vector4<i32>, FieldKind::Vector4I32);
impl_field_data!(Vector2<u32>, FieldKind::Vector2U32);
impl_field_data!(Vector3<u32>, FieldKind::Vector3U32);
impl_field_data!(Vector4<u32>, FieldKind::Vector4U32);
impl_field_data!(Vector2<i64>, FieldKind::Vector2I64);
impl_field_data!(Vector3<i64>, FieldKind::Vector3I64);
impl_field_data!(Vector4<i64>, FieldKind::Vector4I64);
impl_field_data!(Vector2<u64>, FieldKind::Vector2U64);
impl_field_data!(Vector3<u64>, FieldKind::Vector3U64);
impl_field_data!(Vector4<u64>, FieldKind::Vector4U64);
impl<'a> Visit for Data<'a> {
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
if visitor.reading {
if let Some(field) = visitor.find_field(name) {
match &field.kind {
FieldKind::Data(data) => {
*self.vec = data.clone();
Ok(())
}
_ => Err(VisitError::FieldTypeDoesNotMatch),
}
} else {
Err(VisitError::FieldDoesNotExist(name.to_owned()))
}
} else if visitor.find_field(name).is_some() {
Err(VisitError::FieldAlreadyExists(name.to_owned()))
} else {
let node = visitor.current_node();
node.fields
.push(Field::new(name, FieldKind::Data(self.vec.clone())));
Ok(())
}
}
}
pub struct Field {
name: String,
kind: FieldKind,
}
#[derive(Debug)]
pub enum VisitError {
Io(std::io::Error),
UnknownFieldType(u8),
FieldDoesNotExist(String),
FieldAlreadyExists(String),
RegionAlreadyExists(String),
InvalidCurrentNode,
FieldTypeDoesNotMatch,
RegionDoesNotExist(String),
NoActiveNode,
NotSupportedFormat,
InvalidName,
TypeMismatch,
RefCellAlreadyMutableBorrowed,
User(String),
UnexpectedRcNullIndex,
PoisonedMutex,
FileLoadError(FileLoadError),
}
impl Display for VisitError {
fn fmt(&self, f: &mut Formatter) -> std::fmt::Result {
match self {
Self::Io(io) => write!(f, "io error: {}", io),
Self::UnknownFieldType(type_index) => write!(f, "unknown field type {}", type_index),
Self::FieldDoesNotExist(name) => write!(f, "field does not exists {}", name),
Self::FieldAlreadyExists(name) => write!(f, "field already exists {}", name),
Self::RegionAlreadyExists(name) => write!(f, "region already exists {}", name),
Self::InvalidCurrentNode => write!(f, "invalid current node"),
Self::FieldTypeDoesNotMatch => write!(f, "field type does not match"),
Self::RegionDoesNotExist(name) => write!(f, "region does not exists {}", name),
Self::NoActiveNode => write!(f, "no active node"),
Self::NotSupportedFormat => write!(f, "not supported format"),
Self::InvalidName => write!(f, "invalid name"),
Self::TypeMismatch => write!(f, "type mismatch"),
Self::RefCellAlreadyMutableBorrowed => write!(f, "ref cell already mutable borrowed"),
Self::User(msg) => write!(f, "user defined error: {}", msg),
Self::UnexpectedRcNullIndex => write!(f, "unexpected rc null index"),
Self::PoisonedMutex => write!(f, "attempt to lock poisoned mutex"),
Self::FileLoadError(e) => write!(f, "file load error: {:?}", e),
}
}
}
impl<T> From<std::sync::PoisonError<std::sync::MutexGuard<'_, T>>> for VisitError {
fn from(_: std::sync::PoisonError<std::sync::MutexGuard<'_, T>>) -> Self {
Self::PoisonedMutex
}
}
impl<T> From<std::sync::PoisonError<&mut T>> for VisitError {
fn from(_: std::sync::PoisonError<&mut T>) -> Self {
Self::PoisonedMutex
}
}
impl<T> From<std::sync::PoisonError<std::sync::RwLockWriteGuard<'_, T>>> for VisitError {
fn from(_: std::sync::PoisonError<std::sync::RwLockWriteGuard<'_, T>>) -> Self {
Self::PoisonedMutex
}
}
impl From<std::io::Error> for VisitError {
fn from(io_err: std::io::Error) -> Self {
Self::Io(io_err)
}
}
impl From<FromUtf8Error> for VisitError {
fn from(_: FromUtf8Error) -> Self {
Self::InvalidName
}
}
impl From<String> for VisitError {
fn from(s: String) -> Self {
Self::User(s)
}
}
impl From<FileLoadError> for VisitError {
fn from(e: FileLoadError) -> Self {
Self::FileLoadError(e)
}
}
pub type VisitResult = Result<(), VisitError>;
trait VisitableElementaryField {
fn write(&self, file: &mut dyn Write) -> VisitResult;
fn read(&mut self, file: &mut dyn Read) -> VisitResult;
}
macro_rules! impl_visitable_elementary_field {
($ty:ty, $write:ident, $read:ident $(, $endian:ident)*) => {
impl VisitableElementaryField for $ty {
fn write(&self, file: &mut dyn Write) -> VisitResult {
file.$write::<$($endian)*>(*self)?;
Ok(())
}
fn read(&mut self, file: &mut dyn Read) -> VisitResult {
*self = file.$read::<$($endian)*>()?;
Ok(())
}
}
};
}
impl_visitable_elementary_field!(f64, write_f64, read_f64, LittleEndian);
impl_visitable_elementary_field!(f32, write_f32, read_f32, LittleEndian);
impl_visitable_elementary_field!(u8, write_u8, read_u8);
impl_visitable_elementary_field!(i8, write_i8, read_i8);
impl_visitable_elementary_field!(u16, write_u16, read_u16, LittleEndian);
impl_visitable_elementary_field!(i16, write_i16, read_i16, LittleEndian);
impl_visitable_elementary_field!(u32, write_u32, read_u32, LittleEndian);
impl_visitable_elementary_field!(i32, write_i32, read_i32, LittleEndian);
impl_visitable_elementary_field!(u64, write_u64, read_u64, LittleEndian);
impl_visitable_elementary_field!(i64, write_i64, read_i64, LittleEndian);
impl Field {
pub fn new(name: &str, kind: FieldKind) -> Self {
Self {
name: name.to_owned(),
kind,
}
}
fn save(field: &Field, file: &mut dyn Write) -> VisitResult {
fn write_vec_n<T, const N: usize>(
file: &mut dyn Write,
type_id: u8,
vec: &SVector<T, N>,
) -> VisitResult
where
T: VisitableElementaryField,
{
file.write_u8(type_id)?;
for v in vec.iter() {
v.write(file)?;
}
Ok(())
}
let name = field.name.as_bytes();
file.write_u32::<LittleEndian>(name.len() as u32)?;
file.write_all(name)?;
match &field.kind {
FieldKind::U8(data) => {
file.write_u8(1)?;
file.write_u8(*data)?;
}
FieldKind::I8(data) => {
file.write_i8(2)?;
file.write_i8(*data)?;
}
FieldKind::U16(data) => {
file.write_u8(3)?;
file.write_u16::<LittleEndian>(*data)?;
}
FieldKind::I16(data) => {
file.write_u8(4)?;
file.write_i16::<LittleEndian>(*data)?;
}
FieldKind::U32(data) => {
file.write_u8(5)?;
file.write_u32::<LittleEndian>(*data)?;
}
FieldKind::I32(data) => {
file.write_u8(6)?;
file.write_i32::<LittleEndian>(*data)?;
}
FieldKind::U64(data) => {
file.write_u8(7)?;
file.write_u64::<LittleEndian>(*data)?;
}
FieldKind::I64(data) => {
file.write_u8(8)?;
file.write_i64::<LittleEndian>(*data)?;
}
FieldKind::F32(data) => {
file.write_u8(9)?;
file.write_f32::<LittleEndian>(*data)?;
}
FieldKind::F64(data) => {
file.write_u8(10)?;
file.write_f64::<LittleEndian>(*data)?;
}
FieldKind::Vector3F32(data) => {
write_vec_n(file, 11, data)?;
}
FieldKind::UnitQuaternion(data) => {
file.write_u8(12)?;
file.write_f32::<LittleEndian>(data.i)?;
file.write_f32::<LittleEndian>(data.j)?;
file.write_f32::<LittleEndian>(data.k)?;
file.write_f32::<LittleEndian>(data.w)?;
}
FieldKind::Matrix4(data) => {
file.write_u8(13)?;
for f in data.iter() {
file.write_f32::<LittleEndian>(*f)?;
}
}
FieldKind::Data(data) => {
file.write_u8(14)?;
file.write_u32::<LittleEndian>(data.len() as u32)?;
file.write_all(data.as_slice())?;
}
FieldKind::Bool(data) => {
file.write_u8(15)?;
file.write_u8(u8::from(*data))?;
}
FieldKind::Matrix3(data) => {
file.write_u8(16)?;
for f in data.iter() {
file.write_f32::<LittleEndian>(*f)?;
}
}
FieldKind::Vector2F32(data) => {
write_vec_n(file, 17, data)?;
}
FieldKind::Vector4F32(data) => {
write_vec_n(file, 18, data)?;
}
FieldKind::Uuid(uuid) => {
file.write_u8(19)?;
file.write_all(uuid.as_bytes())?;
}
FieldKind::UnitComplex(c) => {
file.write_u8(20)?;
file.write_f32::<LittleEndian>(c.re)?;
file.write_f32::<LittleEndian>(c.im)?;
}
FieldKind::PodArray {
type_id,
element_size,
bytes,
} => {
file.write_u8(21)?;
file.write_u8(*type_id)?;
file.write_u32::<LittleEndian>(*element_size)?;
file.write_u64::<LittleEndian>(bytes.len() as u64)?;
file.write_all(bytes)?;
}
FieldKind::Matrix2(data) => {
file.write_u8(22)?;
for f in data.iter() {
file.write_f32::<LittleEndian>(*f)?;
}
}
FieldKind::Vector2F64(data) => {
write_vec_n(file, 23, data)?;
}
FieldKind::Vector3F64(data) => {
write_vec_n(file, 24, data)?;
}
FieldKind::Vector4F64(data) => {
write_vec_n(file, 25, data)?;
}
FieldKind::Vector2I8(data) => {
write_vec_n(file, 26, data)?;
}
FieldKind::Vector3I8(data) => {
write_vec_n(file, 27, data)?;
}
FieldKind::Vector4I8(data) => {
write_vec_n(file, 28, data)?;
}
FieldKind::Vector2U8(data) => {
write_vec_n(file, 29, data)?;
}
FieldKind::Vector3U8(data) => {
write_vec_n(file, 30, data)?;
}
FieldKind::Vector4U8(data) => {
write_vec_n(file, 31, data)?;
}
FieldKind::Vector2I16(data) => {
write_vec_n(file, 32, data)?;
}
FieldKind::Vector3I16(data) => {
write_vec_n(file, 33, data)?;
}
FieldKind::Vector4I16(data) => {
write_vec_n(file, 34, data)?;
}
FieldKind::Vector2U16(data) => {
write_vec_n(file, 35, data)?;
}
FieldKind::Vector3U16(data) => {
write_vec_n(file, 36, data)?;
}
FieldKind::Vector4U16(data) => {
write_vec_n(file, 37, data)?;
}
FieldKind::Vector2I32(data) => {
write_vec_n(file, 38, data)?;
}
FieldKind::Vector3I32(data) => {
write_vec_n(file, 39, data)?;
}
FieldKind::Vector4I32(data) => {
write_vec_n(file, 40, data)?;
}
FieldKind::Vector2U32(data) => {
write_vec_n(file, 41, data)?;
}
FieldKind::Vector3U32(data) => {
write_vec_n(file, 42, data)?;
}
FieldKind::Vector4U32(data) => {
write_vec_n(file, 43, data)?;
}
FieldKind::Vector2I64(data) => {
write_vec_n(file, 44, data)?;
}
FieldKind::Vector3I64(data) => {
write_vec_n(file, 45, data)?;
}
FieldKind::Vector4I64(data) => {
write_vec_n(file, 46, data)?;
}
FieldKind::Vector2U64(data) => {
write_vec_n(file, 47, data)?;
}
FieldKind::Vector3U64(data) => {
write_vec_n(file, 48, data)?;
}
FieldKind::Vector4U64(data) => {
write_vec_n(file, 49, data)?;
}
}
Ok(())
}
fn load(file: &mut dyn Read) -> Result<Field, VisitError> {
fn read_vec_n<T, S, const N: usize>(
file: &mut dyn Read,
) -> Result<Matrix<T, Const<N>, U1, S>, VisitError>
where
T: VisitableElementaryField + Scalar + Default,
S: RawStorage<T, Const<N>> + RawStorageMut<T, Const<N>> + Default,
{
let mut vec = Matrix::<T, Const<N>, U1, S>::default();
for v in vec.iter_mut() {
v.read(file)?;
}
Ok(vec)
}
let name_len = file.read_u32::<LittleEndian>()? as usize;
let mut raw_name = vec![Default::default(); name_len];
file.read_exact(raw_name.as_mut_slice())?;
let id = file.read_u8()?;
Ok(Field::new(
String::from_utf8(raw_name)?.as_str(),
match id {
1 => FieldKind::U8(file.read_u8()?),
2 => FieldKind::I8(file.read_i8()?),
3 => FieldKind::U16(file.read_u16::<LittleEndian>()?),
4 => FieldKind::I16(file.read_i16::<LittleEndian>()?),
5 => FieldKind::U32(file.read_u32::<LittleEndian>()?),
6 => FieldKind::I32(file.read_i32::<LittleEndian>()?),
7 => FieldKind::U64(file.read_u64::<LittleEndian>()?),
8 => FieldKind::I64(file.read_i64::<LittleEndian>()?),
9 => FieldKind::F32(file.read_f32::<LittleEndian>()?),
10 => FieldKind::F64(file.read_f64::<LittleEndian>()?),
11 => FieldKind::Vector3F32({
let x = file.read_f32::<LittleEndian>()?;
let y = file.read_f32::<LittleEndian>()?;
let z = file.read_f32::<LittleEndian>()?;
Vector3::new(x, y, z)
}),
12 => FieldKind::UnitQuaternion({
let x = file.read_f32::<LittleEndian>()?;
let y = file.read_f32::<LittleEndian>()?;
let z = file.read_f32::<LittleEndian>()?;
let w = file.read_f32::<LittleEndian>()?;
UnitQuaternion::new_normalize(Quaternion::new(w, x, y, z))
}),
13 => FieldKind::Matrix4({
let mut f = [0.0f32; 16];
for n in &mut f {
*n = file.read_f32::<LittleEndian>()?;
}
Matrix4::from_row_slice(&f)
}),
14 => FieldKind::Data({
let len = file.read_u32::<LittleEndian>()? as usize;
let mut vec = vec![Default::default(); len];
file.read_exact(vec.as_mut_slice())?;
vec
}),
15 => FieldKind::Bool(file.read_u8()? != 0),
16 => FieldKind::Matrix3({
let mut f = [0.0f32; 9];
for n in &mut f {
*n = file.read_f32::<LittleEndian>()?;
}
Matrix3::from_row_slice(&f)
}),
17 => FieldKind::Vector2F32({
let x = file.read_f32::<LittleEndian>()?;
let y = file.read_f32::<LittleEndian>()?;
Vector2::new(x, y)
}),
18 => FieldKind::Vector4F32({
let x = file.read_f32::<LittleEndian>()?;
let y = file.read_f32::<LittleEndian>()?;
let z = file.read_f32::<LittleEndian>()?;
let w = file.read_f32::<LittleEndian>()?;
Vector4::new(x, y, z, w)
}),
19 => FieldKind::Uuid({
let mut bytes = uuid::Bytes::default();
file.read_exact(&mut bytes)?;
Uuid::from_bytes(bytes)
}),
20 => FieldKind::UnitComplex({
let re = file.read_f32::<LittleEndian>()?;
let im = file.read_f32::<LittleEndian>()?;
UnitComplex::from_complex(Complex::new(re, im))
}),
21 => {
let type_id = file.read_u8()?;
let element_size = file.read_u32::<LittleEndian>()?;
let data_size = file.read_u64::<LittleEndian>()?;
let mut bytes = vec![0; data_size as usize];
file.read_exact(&mut bytes)?;
FieldKind::PodArray {
type_id,
element_size,
bytes,
}
}
22 => FieldKind::Matrix2({
let mut f = [0.0f32; 3];
for n in &mut f {
*n = file.read_f32::<LittleEndian>()?;
}
Matrix2::from_row_slice(&f)
}),
23 => FieldKind::Vector2F64(read_vec_n(file)?),
24 => FieldKind::Vector3F64(read_vec_n(file)?),
25 => FieldKind::Vector4F64(read_vec_n(file)?),
26 => FieldKind::Vector2I8(read_vec_n(file)?),
27 => FieldKind::Vector3I8(read_vec_n(file)?),
28 => FieldKind::Vector4I8(read_vec_n(file)?),
29 => FieldKind::Vector2U8(read_vec_n(file)?),
30 => FieldKind::Vector3U8(read_vec_n(file)?),
31 => FieldKind::Vector4U8(read_vec_n(file)?),
32 => FieldKind::Vector2I16(read_vec_n(file)?),
33 => FieldKind::Vector3I16(read_vec_n(file)?),
34 => FieldKind::Vector4I16(read_vec_n(file)?),
35 => FieldKind::Vector2U16(read_vec_n(file)?),
36 => FieldKind::Vector3U16(read_vec_n(file)?),
37 => FieldKind::Vector4U16(read_vec_n(file)?),
38 => FieldKind::Vector2I32(read_vec_n(file)?),
39 => FieldKind::Vector3I32(read_vec_n(file)?),
40 => FieldKind::Vector4I32(read_vec_n(file)?),
41 => FieldKind::Vector2U32(read_vec_n(file)?),
42 => FieldKind::Vector3U32(read_vec_n(file)?),
43 => FieldKind::Vector4U32(read_vec_n(file)?),
44 => FieldKind::Vector2I64(read_vec_n(file)?),
45 => FieldKind::Vector3I64(read_vec_n(file)?),
46 => FieldKind::Vector4I64(read_vec_n(file)?),
47 => FieldKind::Vector2U64(read_vec_n(file)?),
48 => FieldKind::Vector3U64(read_vec_n(file)?),
49 => FieldKind::Vector4U64(read_vec_n(file)?),
_ => return Err(VisitError::UnknownFieldType(id)),
},
))
}
fn as_string(&self) -> String {
format!("{}{}", self.name, self.kind.as_string())
}
}
pub struct Node {
name: String,
fields: Vec<Field>,
parent: Handle<Node>,
children: Vec<Handle<Node>>,
}
impl Node {
fn new(name: &str, parent: Handle<Node>) -> Self {
Self {
name: name.to_owned(),
fields: Vec::new(),
parent,
children: Vec::new(),
}
}
}
impl Default for Node {
fn default() -> Self {
Self {
name: String::new(),
fields: Vec::new(),
parent: Handle::NONE,
children: Vec::new(),
}
}
}
#[must_use = "the guard must be used"]
pub struct RegionGuard<'a>(&'a mut Visitor);
impl<'a> Deref for RegionGuard<'a> {
type Target = Visitor;
fn deref(&self) -> &Self::Target {
self.0
}
}
impl<'a> DerefMut for RegionGuard<'a> {
fn deref_mut(&mut self) -> &mut Self::Target {
self.0
}
}
impl<'a> Drop for RegionGuard<'a> {
fn drop(&mut self) {
self.0.leave_region().unwrap();
}
}
pub struct Visitor {
nodes: Pool<Node>,
rc_map: FxHashMap<u64, Rc<dyn Any>>,
arc_map: FxHashMap<u64, Arc<dyn Any + Send + Sync>>,
reading: bool,
current_node: Handle<Node>,
root: Handle<Node>,
pub environment: Option<Arc<dyn Any>>,
}
pub trait Visit {
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult;
}
impl Default for Visitor {
fn default() -> Self {
Self::new()
}
}
impl Visitor {
const MAGIC: &'static str = "RG3D";
pub fn new() -> Self {
let mut nodes = Pool::new();
let root = nodes.spawn(Node::new("__ROOT__", Handle::NONE));
Self {
nodes,
rc_map: FxHashMap::default(),
arc_map: FxHashMap::default(),
reading: false,
current_node: root,
root,
environment: None,
}
}
fn find_field(&mut self, name: &str) -> Option<&mut Field> {
self.nodes
.borrow_mut(self.current_node)
.fields
.iter_mut()
.find(|field| field.name == name)
}
pub fn is_reading(&self) -> bool {
self.reading
}
fn current_node(&mut self) -> &mut Node {
self.nodes.borrow_mut(self.current_node)
}
pub fn enter_region(&mut self, name: &str) -> Result<RegionGuard, VisitError> {
let node = self.nodes.borrow(self.current_node);
if self.reading {
let mut region = Handle::NONE;
for child_handle in node.children.iter() {
let child = self.nodes.borrow(*child_handle);
if child.name == name {
region = *child_handle;
break;
}
}
if region.is_some() {
self.current_node = region;
Ok(RegionGuard(self))
} else {
Err(VisitError::RegionDoesNotExist(name.to_owned()))
}
} else {
for child_handle in node.children.iter() {
let child = self.nodes.borrow(*child_handle);
if child.name == name {
return Err(VisitError::RegionAlreadyExists(name.to_owned()));
}
}
let node_handle = self.nodes.spawn(Node::new(name, self.current_node));
self.nodes
.borrow_mut(self.current_node)
.children
.push(node_handle);
self.current_node = node_handle;
Ok(RegionGuard(self))
}
}
pub fn current_region(&self) -> Option<&str> {
self.nodes
.try_borrow(self.current_node)
.map(|n| n.name.as_str())
}
fn leave_region(&mut self) -> VisitResult {
self.current_node = self.nodes.borrow(self.current_node).parent;
if self.current_node.is_none() {
Err(VisitError::NoActiveNode)
} else {
Ok(())
}
}
fn print_node(&self, node_handle: Handle<Node>, nesting: usize, out_string: &mut String) {
let offset = (0..nesting).map(|_| "\t").collect::<String>();
let node = self.nodes.borrow(node_handle);
*out_string += format!(
"{}{}[Fields={}, Children={}]: ",
offset,
node.name,
node.fields.len(),
node.children.len()
)
.as_str();
for field in node.fields.iter() {
*out_string += field.as_string().as_str();
}
*out_string += "\n";
for child_handle in node.children.iter() {
self.print_node(*child_handle, nesting + 1, out_string);
}
}
pub fn save_text(&self) -> String {
let mut out_string = String::new();
self.print_node(self.root, 0, &mut out_string);
out_string
}
pub fn save_binary_to_memory<W: Write>(&self, mut writer: W) -> VisitResult {
writer.write_all(Self::MAGIC.as_bytes())?;
let mut stack = vec![self.root];
while let Some(node_handle) = stack.pop() {
let node = self.nodes.borrow(node_handle);
let name = node.name.as_bytes();
writer.write_u32::<LittleEndian>(name.len() as u32)?;
writer.write_all(name)?;
writer.write_u32::<LittleEndian>(node.fields.len() as u32)?;
for field in node.fields.iter() {
Field::save(field, &mut writer)?
}
writer.write_u32::<LittleEndian>(node.children.len() as u32)?;
stack.extend_from_slice(&node.children);
}
Ok(())
}
pub fn save_binary_to_vec(&self) -> Result<Vec<u8>, VisitError> {
let mut writer = Cursor::new(Vec::new());
self.save_binary_to_memory(&mut writer)?;
Ok(writer.into_inner())
}
pub fn save_binary<P: AsRef<Path>>(&self, path: P) -> VisitResult {
let writer = BufWriter::new(File::create(path)?);
self.save_binary_to_memory(writer)
}
fn load_node_binary(&mut self, file: &mut dyn Read) -> Result<Handle<Node>, VisitError> {
let name_len = file.read_u32::<LittleEndian>()? as usize;
let mut raw_name = vec![Default::default(); name_len];
file.read_exact(raw_name.as_mut_slice())?;
let mut node = Node {
name: String::from_utf8(raw_name)?,
..Node::default()
};
let field_count = file.read_u32::<LittleEndian>()? as usize;
for _ in 0..field_count {
let field = Field::load(file)?;
node.fields.push(field);
}
let mut children = Vec::new();
let child_count = file.read_u32::<LittleEndian>()? as usize;
for _ in 0..child_count {
children.push(self.load_node_binary(file)?);
}
node.children = children.clone();
let handle = self.nodes.spawn(node);
for child_handle in children.iter() {
let child = self.nodes.borrow_mut(*child_handle);
child.parent = handle;
}
Ok(handle)
}
pub async fn load_binary<P: AsRef<Path>>(path: P) -> Result<Self, VisitError> {
Self::load_from_memory(io::load_file(path).await?)
}
pub fn load_from_memory(data: Vec<u8>) -> Result<Self, VisitError> {
let mut reader = Cursor::new(data);
let mut magic: [u8; 4] = Default::default();
reader.read_exact(&mut magic)?;
if !magic.eq(Self::MAGIC.as_bytes()) {
return Err(VisitError::NotSupportedFormat);
}
let mut visitor = Self {
nodes: Pool::new(),
rc_map: Default::default(),
arc_map: Default::default(),
reading: true,
current_node: Handle::NONE,
root: Handle::NONE,
environment: None,
};
visitor.root = visitor.load_node_binary(&mut reader)?;
visitor.current_node = visitor.root;
Ok(visitor)
}
}
impl<T> Visit for RefCell<T>
where
T: Visit + 'static,
{
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
if let Ok(mut data) = self.try_borrow_mut() {
data.visit(name, visitor)
} else {
Err(VisitError::RefCellAlreadyMutableBorrowed)
}
}
}
impl<T> Visit for Vec<T>
where
T: Default + Visit + 'static,
{
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
let mut region = visitor.enter_region(name)?;
let mut len = self.len() as u32;
len.visit("Length", &mut region)?;
if region.reading {
self.clear();
for index in 0..len {
let region_name = format!("Item{}", index);
let mut region = region.enter_region(region_name.as_str())?;
let mut object = T::default();
object.visit("ItemData", &mut region)?;
self.push(object);
}
} else {
for (index, item) in self.iter_mut().enumerate() {
let region_name = format!("Item{}", index);
let mut region = region.enter_region(region_name.as_str())?;
item.visit("ItemData", &mut region)?;
}
}
Ok(())
}
}
impl<T> Visit for Option<T>
where
T: Default + Visit + 'static,
{
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
let mut region = visitor.enter_region(name)?;
let mut is_some = u8::from(self.is_some());
is_some.visit("IsSome", &mut region)?;
if is_some != 0 {
if region.reading {
let mut value = T::default();
value.visit("Data", &mut region)?;
*self = Some(value);
} else {
self.as_mut().unwrap().visit("Data", &mut region)?;
}
}
Ok(())
}
}
impl Visit for String {
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
let mut region = visitor.enter_region(name)?;
let mut len = self.as_bytes().len() as u32;
len.visit("Length", &mut region)?;
let mut data = if region.reading {
Vec::new()
} else {
Vec::from(self.as_bytes())
};
let mut proxy = Data { vec: &mut data };
proxy.visit("Data", &mut region)?;
if region.reading {
*self = String::from_utf8(data)?;
}
Ok(())
}
}
impl Visit for PathBuf {
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
let mut region = visitor.enter_region(name)?;
let portable_path = replace_slashes(&self);
let bytes = if let Some(path_str) = portable_path.as_os_str().to_str() {
path_str.as_bytes()
} else {
return Err(VisitError::InvalidName);
};
let mut len = bytes.len() as u32;
len.visit("Length", &mut region)?;
let mut data = if region.reading {
Vec::new()
} else {
Vec::from(bytes)
};
let mut proxy = Data { vec: &mut data };
proxy.visit("Data", &mut region)?;
if region.reading {
*self = PathBuf::from(String::from_utf8(data)?);
}
Ok(())
}
}
impl<T> Visit for Cell<T>
where
T: Copy + Clone + Visit + 'static,
{
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
let mut value = self.get();
value.visit(name, visitor)?;
if visitor.is_reading() {
self.set(value);
}
Ok(())
}
}
impl<T> Visit for Rc<T>
where
T: Visit + 'static,
{
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
let mut region = visitor.enter_region(name)?;
if region.reading {
let mut raw = 0u64;
raw.visit("Id", &mut region)?;
if raw == 0 {
return Err(VisitError::UnexpectedRcNullIndex);
}
if let Some(ptr) = region.rc_map.get(&raw) {
if let Ok(res) = Rc::downcast::<T>(ptr.clone()) {
*self = res;
} else {
return Err(VisitError::TypeMismatch);
}
} else {
region.rc_map.insert(raw, self.clone());
let raw = rc_to_raw(self);
unsafe { &mut *raw }.visit("RcData", &mut region)?;
}
} else {
let raw = rc_to_raw(self);
let mut index = raw as u64;
index.visit("Id", &mut region)?;
if let Entry::Vacant(entry) = region.rc_map.entry(index) {
entry.insert(self.clone());
unsafe { &mut *raw }.visit("RcData", &mut region)?;
}
}
Ok(())
}
}
impl<T> Visit for Mutex<T>
where
T: Visit + Send,
{
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
self.get_mut()?.visit(name, visitor)
}
}
impl<T> Visit for parking_lot::Mutex<T>
where
T: Visit + Send,
{
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
self.get_mut().visit(name, visitor)
}
}
impl<T> Visit for Box<T>
where
T: Visit,
{
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
self.deref_mut().visit(name, visitor)
}
}
impl<T> Visit for RwLock<T>
where
T: Visit + Send,
{
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
self.write()?.visit(name, visitor)
}
}
fn arc_to_raw<T>(arc: &Arc<T>) -> *mut T {
&**arc as *const T as *mut T
}
fn rc_to_raw<T>(rc: &Rc<T>) -> *mut T {
&**rc as *const T as *mut T
}
impl<T> Visit for Arc<T>
where
T: Visit + Send + Sync + 'static,
{
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
let mut region = visitor.enter_region(name)?;
if region.reading {
let mut raw = 0u64;
raw.visit("Id", &mut region)?;
if raw == 0 {
return Err(VisitError::UnexpectedRcNullIndex);
}
if let Some(ptr) = &mut region.arc_map.get(&raw) {
if let Ok(res) = Arc::downcast::<T>(ptr.clone()) {
*self = res;
} else {
return Err(VisitError::TypeMismatch);
}
} else {
region.arc_map.insert(raw, self.clone());
let raw = arc_to_raw(self);
unsafe { &mut *raw }.visit("ArcData", &mut region)?;
}
} else {
let raw = arc_to_raw(self);
let mut index = raw as u64;
index.visit("Id", &mut region)?;
if let Entry::Vacant(entry) = region.arc_map.entry(index) {
entry.insert(self.clone());
unsafe { &mut *raw }.visit("ArcData", &mut region)?;
}
}
Ok(())
}
}
impl<T> Visit for std::rc::Weak<T>
where
T: Default + Visit + 'static,
{
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
let mut region = visitor.enter_region(name)?;
if region.reading {
let mut raw = 0u64;
raw.visit("Id", &mut region)?;
if raw != 0 {
if let Some(ptr) = &mut region.rc_map.get(&raw) {
if let Ok(res) = Rc::downcast::<T>(ptr.clone()) {
*self = Rc::downgrade(&res);
} else {
return Err(VisitError::TypeMismatch);
}
} else {
let rc = Rc::new(T::default());
region.rc_map.insert(raw, rc.clone());
let raw = rc_to_raw(&rc);
unsafe { &mut *raw }.visit("RcData", &mut region)?;
*self = Rc::downgrade(&rc);
}
}
} else if let Some(rc) = std::rc::Weak::upgrade(self) {
let raw = rc_to_raw(&rc);
let mut index = raw as u64;
index.visit("Id", &mut region)?;
if let Entry::Vacant(entry) = region.rc_map.entry(index) {
entry.insert(rc);
unsafe { &mut *raw }.visit("RcData", &mut region)?;
}
} else {
let mut index = 0u64;
index.visit("Id", &mut region)?;
}
Ok(())
}
}
impl<T> Visit for std::sync::Weak<T>
where
T: Default + Visit + Send + Sync + 'static,
{
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
let mut region = visitor.enter_region(name)?;
if region.reading {
let mut raw = 0u64;
raw.visit("Id", &mut region)?;
if raw != 0 {
if let Some(ptr) = region.arc_map.get(&raw) {
if let Ok(res) = Arc::downcast::<T>(ptr.clone()) {
*self = Arc::downgrade(&res);
} else {
return Err(VisitError::TypeMismatch);
}
} else {
let arc = Arc::new(T::default());
region.arc_map.insert(raw, arc.clone());
let raw = arc_to_raw(&arc);
unsafe { &mut *raw }.visit("ArcData", &mut region)?;
*self = Arc::downgrade(&arc);
}
}
} else if let Some(arc) = std::sync::Weak::upgrade(self) {
let raw = arc_to_raw(&arc);
let mut index = raw as u64;
index.visit("Id", &mut region)?;
if let Entry::Vacant(entry) = region.arc_map.entry(index) {
entry.insert(arc);
unsafe { &mut *raw }.visit("ArcData", &mut region)?;
}
} else {
let mut index = 0u64;
index.visit("Id", &mut region)?;
}
Ok(())
}
}
impl<K, V, S> Visit for HashMap<K, V, S>
where
K: Visit + Default + Clone + Hash + Eq,
V: Visit + Default,
S: BuildHasher + Clone,
{
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
let mut region = visitor.enter_region(name)?;
let mut count = self.len() as u32;
count.visit("Count", &mut region)?;
if region.is_reading() {
self.clear();
for i in 0..(count as usize) {
let name = format!("Item{}", i);
let mut region = region.enter_region(name.as_str())?;
let mut key = K::default();
key.visit("Key", &mut region)?;
let mut value = V::default();
value.visit("Value", &mut region)?;
self.insert(key, value);
}
} else {
for (i, (key, value)) in self.iter_mut().enumerate() {
let name = format!("Item{}", i);
let mut region = region.enter_region(name.as_str())?;
let mut key = key.clone();
key.visit("Key", &mut region)?;
value.visit("Value", &mut region)?;
}
}
Ok(())
}
}
impl<K, S> Visit for HashSet<K, S>
where
K: Visit + Default + Clone + Hash + Eq,
S: BuildHasher + Clone,
{
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
let mut region = visitor.enter_region(name)?;
let mut count = self.len() as u32;
count.visit("Count", &mut region)?;
if region.is_reading() {
self.clear();
for i in 0..(count as usize) {
let name = format!("Item{}", i);
let mut region = region.enter_region(name.as_str())?;
let mut key = K::default();
key.visit("Key", &mut region)?;
self.insert(key);
}
} else {
for (i, mut key) in self.clone().into_iter().enumerate() {
let name = format!("Item{}", i);
let mut region = region.enter_region(name.as_str())?;
key.visit("Key", &mut region)?;
}
}
Ok(())
}
}
impl<T: Default + Visit, const SIZE: usize> Visit for [T; SIZE] {
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
let mut region = visitor.enter_region(name)?;
let mut len = SIZE as u32;
len.visit("Length", &mut region)?;
if region.reading {
if len > SIZE as u32 {
return VisitResult::Err(VisitError::User(format!(
"Not enough space in static array, got {}, needed {}!",
len, SIZE
)));
}
for index in 0..len {
let region_name = format!("Item{}", index);
let mut region = region.enter_region(region_name.as_str())?;
let mut object = T::default();
object.visit("ItemData", &mut region)?;
self[index as usize] = object;
}
} else {
for (index, item) in self.iter_mut().enumerate() {
let region_name = format!("Item{}", index);
let mut region = region.enter_region(region_name.as_str())?;
item.visit("ItemData", &mut region)?;
}
}
Ok(())
}
}
impl Visit for Duration {
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
let mut region = visitor.enter_region(name)?;
let mut secs: u64 = self.as_secs();
let mut nanos: u32 = self.subsec_nanos();
secs.visit("Secs", &mut region)?;
nanos.visit("Nanos", &mut region)?;
if region.is_reading() {
*self = Duration::new(secs, nanos);
}
Ok(())
}
}
impl<T: Visit> Visit for Range<T> {
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
let mut region = visitor.enter_region(name)?;
self.start.visit("Start", &mut region)?;
self.end.visit("End", &mut region)?;
Ok(())
}
}
#[cfg(test)]
mod test {
use crate::visitor::{Data, Visit, VisitResult, Visitor};
use std::{fs::File, io::Write, path::Path, rc::Rc};
#[derive(Visit, Default)]
pub struct Model {
data: u64,
}
#[derive(Default)]
pub struct Texture {
data: Vec<u8>,
}
impl Visit for Texture {
fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult {
let mut region = visitor.enter_region(name)?;
let mut proxy = Data {
vec: &mut self.data,
};
proxy.visit("Data", &mut region)?;
Ok(())
}
}
#[allow(dead_code)]
#[derive(Visit)]
pub enum ResourceKind {
Unknown,
Model(Model),
Texture(Texture),
}
impl Default for ResourceKind {
fn default() -> Self {
Self::Unknown
}
}
#[derive(Visit)]
struct Resource {
kind: ResourceKind,
data: u16,
}
impl Resource {
fn new(kind: ResourceKind) -> Self {
Self { kind, data: 0 }
}
}
impl Default for Resource {
fn default() -> Self {
Self {
kind: ResourceKind::Unknown,
data: 0,
}
}
}
#[derive(Default, Visit)]
struct Foo {
bar: u64,
shared_resource: Option<Rc<Resource>>,
}
impl Foo {
fn new(resource: Rc<Resource>) -> Self {
Self {
bar: 123,
shared_resource: Some(resource),
}
}
}
#[test]
fn visitor_test() {
let path = Path::new("test.bin");
{
let mut visitor = Visitor::new();
let mut resource = Rc::new(Resource::new(ResourceKind::Model(Model { data: 555 })));
resource.visit("SharedResource", &mut visitor).unwrap();
let mut objects = vec![Foo::new(resource.clone()), Foo::new(resource)];
objects.visit("Objects", &mut visitor).unwrap();
visitor.save_binary(path).unwrap();
if let Ok(mut file) = File::create(Path::new("test.txt")) {
file.write_all(visitor.save_text().as_bytes()).unwrap();
}
}
{
let mut visitor = futures::executor::block_on(Visitor::load_binary(path)).unwrap();
let mut resource: Rc<Resource> = Rc::new(Default::default());
resource.visit("SharedResource", &mut visitor).unwrap();
let mut objects: Vec<Foo> = Vec::new();
objects.visit("Objects", &mut visitor).unwrap();
}
}
}