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use super::expr::Expr;
use super::expr::InvalidArgumentError;
use crate::serialization::op_code::OpCode;
use crate::serialization::sigma_byte_reader::SigmaByteRead;
use crate::serialization::sigma_byte_writer::SigmaByteWrite;
use crate::serialization::SerializationError;
use crate::serialization::SigmaSerializable;
use crate::types::stype::SType;
#[derive(PartialEq, Eq, Debug, Clone)]
pub struct OptionGet {
pub input: Box<Expr>,
}
impl OptionGet {
pub(crate) const OP_CODE: OpCode = OpCode::OPTION_GET;
pub fn new(input: Expr) -> Result<Self, InvalidArgumentError> {
match input.post_eval_tpe() {
SType::SOption(_) => Ok(OptionGet {
input: Box::new(input),
}),
_ => Err(InvalidArgumentError(format!(
"expected OptionGet::input type to be SOption, got: {0:?}",
input.tpe(),
))),
}
}
pub(crate) fn op_code(&self) -> OpCode {
Self::OP_CODE
}
pub fn tpe(&self) -> SType {
match self.input.tpe() {
SType::SOption(o) => *o,
_ => panic!(
"expected OptionGet::input type to be SOption, got: {0:?}",
self.input.tpe()
),
}
}
}
impl SigmaSerializable for OptionGet {
fn sigma_serialize<W: SigmaByteWrite>(&self, w: &mut W) -> Result<(), std::io::Error> {
self.input.sigma_serialize(w)
}
fn sigma_parse<R: SigmaByteRead>(r: &mut R) -> Result<Self, SerializationError> {
Ok(OptionGet::new(Expr::sigma_parse(r)?)?)
}
}
#[cfg(test)]
#[cfg(feature = "arbitrary")]
mod tests {
use super::*;
use crate::mir::expr::Expr;
use crate::mir::extract_reg_as::ExtractRegisterAs;
use crate::mir::global_vars::GlobalVars;
use crate::serialization::sigma_serialize_roundtrip;
use crate::types::stype::SType;
#[test]
fn ser_roundtrip() {
let get_reg_expr: Expr = ExtractRegisterAs::new(
GlobalVars::SelfBox.into(),
0,
SType::SOption(SType::SLong.into()),
)
.unwrap()
.into();
let e: Expr = OptionGet {
input: Box::new(get_reg_expr),
}
.into();
assert_eq![sigma_serialize_roundtrip(&e), e];
}
}