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use crate::structs::{ArchiveSerializer, StructError, StructResult};
use serde::Serialize;
pub enum ByteOrder {
Le,
Be,
Ne,
}
pub enum VariantIndexType {
U8,
U16,
U32,
U64,
I8,
I16,
I32,
I64,
}
macro_rules! impl_byte_order {
($($n:ident),+) => {
impl ByteOrder {$(
pub fn $n(&self, num: $n) -> Vec<u8> {
match self {
ByteOrder::Le => num.to_le_bytes().to_vec(),
ByteOrder::Be => num.to_be_bytes().to_vec(),
ByteOrder::Ne => num.to_ne_bytes().to_vec(),
}
}
)+}
};
}
impl_byte_order!(u8, u16, u32, u64, i8, i16, i32, i64, f32, f64);
impl VariantIndexType {
pub fn cast(&self, num: u32, byte_order: &ByteOrder) -> StructResult<Vec<u8>> {
Ok(match self {
VariantIndexType::U8 => byte_order.u8(num
.try_into()
.map_err(|_| StructError::IncorrectEnumVariant)?),
VariantIndexType::U16 => byte_order.u16(
num.try_into()
.map_err(|_| StructError::IncorrectEnumVariant)?,
),
VariantIndexType::U32 => byte_order.u32(
num.try_into()
.map_err(|_| StructError::IncorrectEnumVariant)?,
),
VariantIndexType::U64 => byte_order.u64(
num.try_into()
.map_err(|_| StructError::IncorrectEnumVariant)?,
),
VariantIndexType::I8 => byte_order.i8(num
.try_into()
.map_err(|_| StructError::IncorrectEnumVariant)?),
VariantIndexType::I16 => byte_order.i16(
num.try_into()
.map_err(|_| StructError::IncorrectEnumVariant)?,
),
VariantIndexType::I32 => byte_order.i32(
num.try_into()
.map_err(|_| StructError::IncorrectEnumVariant)?,
),
VariantIndexType::I64 => byte_order.i64(
num.try_into()
.map_err(|_| StructError::IncorrectEnumVariant)?,
),
})
}
}
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())
}
}
impl Default for Settings {
fn default() -> Self {
Self {
byte_order: ByteOrder::Le,
variant_index_type: VariantIndexType::U32,
}
}
}
|
