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use crate::mir::expr::InvalidArgumentError;
use crate::mir::val_def::ValId;
use crate::types::stuple::STupleItemsOutOfBoundsError;
use crate::types::type_unify::TypeUnificationError;
use super::{
constant_store::ConstantStore,
sigma_byte_reader::{SigmaByteRead, SigmaByteReader},
sigma_byte_writer::{SigmaByteWrite, SigmaByteWriter},
};
use io::Cursor;
use sigma_ser::{peekable_reader::PeekableReader, vlq_encode};
use std::io;
use thiserror::Error;
#[derive(Error, Eq, PartialEq, Debug, Clone)]
pub enum SerializationError {
#[error("invalid op code: {0}")]
InvalidOpCode(u8),
#[error("not implemented op error")]
NotImplementedOpCode(String),
#[error("type parsing error")]
InvalidTypePrefix,
#[error("vlq encode error")]
VlqEncode(vlq_encode::VlqEncodingError),
#[error("io error")]
Io(String),
#[error("misc error")]
Misc(String),
#[error("feature not yet implemented: {0}")]
NotImplementedYet(String),
#[error("Constant with index {0} not found in constant store")]
ConstantForPlaceholderNotFound(u32),
#[error("Value out of bounds: {0}")]
ValueOutOfBounds(String),
#[error("Tuple items out of bounds: {0}")]
TupleItemsOutOfBounds(usize),
#[error("ValDef type for an index {0:?} not found in ValDefTypeStore store")]
ValDefIdNotFound(ValId),
#[error("Invalid argument: {0:?}")]
InvalidArgument(InvalidArgumentError),
}
impl From<vlq_encode::VlqEncodingError> for SerializationError {
fn from(error: vlq_encode::VlqEncodingError) -> Self {
SerializationError::VlqEncode(error)
}
}
impl From<io::Error> for SerializationError {
fn from(error: io::Error) -> Self {
SerializationError::Io(error.to_string())
}
}
impl From<&io::Error> for SerializationError {
fn from(error: &io::Error) -> Self {
SerializationError::Io(error.to_string())
}
}
impl From<InvalidArgumentError> for SerializationError {
fn from(e: InvalidArgumentError) -> Self {
SerializationError::InvalidArgument(e)
}
}
impl From<STupleItemsOutOfBoundsError> for SerializationError {
fn from(e: STupleItemsOutOfBoundsError) -> Self {
SerializationError::ValueOutOfBounds(format!("{:?}", e))
}
}
impl From<TypeUnificationError> for SerializationError {
fn from(e: TypeUnificationError) -> Self {
SerializationError::Misc(format!("{:?}", e))
}
}
pub trait SigmaSerializable: Sized {
fn sigma_serialize<W: SigmaByteWrite>(&self, w: &mut W) -> Result<(), io::Error>;
fn sigma_parse<R: SigmaByteRead>(r: &mut R) -> Result<Self, SerializationError>;
fn sigma_serialize_bytes(&self) -> Vec<u8> {
let mut data = Vec::new();
let mut w = SigmaByteWriter::new(&mut data, None);
self.sigma_serialize(&mut w)
.expect("serialization failed");
data
}
fn sigma_parse_bytes(mut bytes: Vec<u8>) -> Result<Self, SerializationError> {
let cursor = Cursor::new(&mut bytes[..]);
let pr = PeekableReader::new(cursor);
let mut sr = SigmaByteReader::new(pr, ConstantStore::empty());
Self::sigma_parse(&mut sr)
}
}
impl<T: SigmaSerializable> SigmaSerializable for Vec<T> {
fn sigma_serialize<W: SigmaByteWrite>(&self, w: &mut W) -> Result<(), io::Error> {
w.put_u32(self.len() as u32)?;
self.iter().try_for_each(|i| i.sigma_serialize(w))
}
fn sigma_parse<R: SigmaByteRead>(r: &mut R) -> Result<Self, SerializationError> {
let items_count = r.get_u32()?;
let mut items = Vec::with_capacity(items_count as usize);
for _ in 0..items_count {
items.push(T::sigma_parse(r)?);
}
Ok(items)
}
}
impl<T: SigmaSerializable> SigmaSerializable for Option<Box<T>> {
fn sigma_serialize<W: SigmaByteWrite>(&self, w: &mut W) -> Result<(), io::Error> {
match self {
Some(v) => {
w.put_u8(1)?;
v.sigma_serialize(w)
}
None => w.put_u8(0),
}
}
fn sigma_parse<R: SigmaByteRead>(r: &mut R) -> Result<Self, SerializationError> {
let tag = r.get_u8()?;
Ok(if tag != 0 {
Some(T::sigma_parse(r)?.into())
} else {
None
})
}
}
pub fn sigma_serialize_roundtrip<T: SigmaSerializable>(v: &T) -> T {
let mut data = Vec::new();
let mut w = SigmaByteWriter::new(&mut data, None);
v.sigma_serialize(&mut w).expect("serialization failed");
let cursor = Cursor::new(&mut data[..]);
let pr = PeekableReader::new(cursor);
let mut sr = SigmaByteReader::new(pr, ConstantStore::empty());
T::sigma_parse(&mut sr).expect("parse failed")
}