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use crate::structs::{ArchiveDeserializer, ArchiveSerializer, StructResult};
use serde::{Deserialize, Serialize};
use std::mem::size_of;
pub enum ByteOrder {
Le,
Be,
Ne,
}
pub enum VariantIndexType {
U8,
U16,
U32,
U64,
}
macro_rules! impl_byte_order {
($($to:ident $fr:ident $n:ident),+) => {
impl ByteOrder {$(
pub fn $fr(&self, num: $n) -> Vec<u8> {
match self {
Self::Le => num.to_le_bytes().to_vec(),
Self::Be => num.to_be_bytes().to_vec(),
Self::Ne => num.to_ne_bytes().to_vec(),
}
}
pub fn $to(&self, bytes: [u8; size_of::<$n>()]) -> $n {
match self {
Self::Le => $n::from_le_bytes(bytes),
Self::Be => $n::from_be_bytes(bytes),
Self::Ne => $n::from_ne_bytes(bytes),
}
}
)+}
};
}
impl_byte_order!(
to_u8 from_u8 u8,
to_u16 form_u16 u16,
to_u32 form_u32 u32,
to_u64 form_u64 u64,
to_i8 form_i8 i8,
to_i16 form_i16 i16,
to_i32 form_i32 i32,
to_i64 form_i64 i64,
to_f32 form_f32 f32,
to_f64 form_f64 f64
);
impl VariantIndexType {
pub fn cast(&self, num: u32, byte_order: &ByteOrder) -> Vec<u8> {
match self {
Self::U8 => byte_order.from_u8(num as u8),
Self::U16 => byte_order.form_u16(num as u16),
Self::U32 => byte_order.form_u32(num),
Self::U64 => byte_order.form_u64(num as u64),
}
}
}
pub struct Settings {
pub(crate) byte_order: ByteOrder,
pub(crate) variant_index_type: VariantIndexType,
}
impl Settings {
pub fn new(byte_order: ByteOrder, variant_index_type: VariantIndexType) -> Self {
Self {
byte_order,
variant_index_type,
}
}
pub fn byte_order(mut self, order: ByteOrder) -> Self {
self.byte_order = order;
self
}
pub fn variant_index_type(mut self, index_type: VariantIndexType) -> Self {
self.variant_index_type = index_type;
self
}
pub fn serialize(self, object: &impl Serialize) -> StructResult<Vec<u8>> {
let mut serializer = ArchiveSerializer::new(self);
object.serialize(&mut serializer)?;
Ok(serializer.to_bytes())
}
pub fn deserialize<'de, T: Deserialize<'de>>(self, object: &'de [u8]) -> StructResult<T> {
let mut deserializer = ArchiveDeserializer::new(object, self);
Ok(T::deserialize(&mut deserializer)?)
}
}
impl Default for Settings {
fn default() -> Self {
Self {
byte_order: ByteOrder::Le,
variant_index_type: VariantIndexType::U32,
}
}
}
|
