use super::expr::Expr;
use super::expr::InvalidArgumentError;
use crate::has_opcode::HasStaticOpCode;
use crate::serialization::op_code::OpCode;
use crate::serialization::sigma_byte_reader::SigmaByteRead;
use crate::serialization::sigma_byte_writer::SigmaByteWrite;
use crate::serialization::SigmaParsingError;
use crate::serialization::SigmaSerializable;
use crate::serialization::SigmaSerializeResult;
use crate::types::stype::SType;
#[derive(PartialEq, Eq, Debug, Clone)]
pub struct OptionGetOrElse {
pub input: Box<Expr>,
pub default: Box<Expr>,
elem_tpe: SType,
}
impl OptionGetOrElse {
pub fn new(input: Expr, default: Expr) -> Result<Self, InvalidArgumentError> {
match input.post_eval_tpe() {
SType::SOption(elem_tpe) => {
default.check_post_eval_tpe(elem_tpe.as_ref())?;
Ok(OptionGetOrElse {
input: Box::new(input),
default: Box::new(default),
elem_tpe: *elem_tpe,
})
}
_ => Err(InvalidArgumentError(format!(
"expected OptionGetOrElse::input type to be SOption, got: {0:?}",
input.tpe(),
))),
}
}
pub fn tpe(&self) -> SType {
self.elem_tpe.clone()
}
}
impl HasStaticOpCode for OptionGetOrElse {
const OP_CODE: OpCode = OpCode::OPTION_GET_OR_ELSE;
}
impl SigmaSerializable for OptionGetOrElse {
fn sigma_serialize<W: SigmaByteWrite>(&self, w: &mut W) -> SigmaSerializeResult {
self.input.sigma_serialize(w)?;
self.default.sigma_serialize(w)
}
fn sigma_parse<R: SigmaByteRead>(r: &mut R) -> Result<Self, SigmaParsingError> {
let input = Expr::sigma_parse(r)?;
let default = Expr::sigma_parse(r)?;
Ok(OptionGetOrElse::new(input, default)?)
}
}
#[cfg(test)]
#[cfg(feature = "arbitrary")]
#[allow(clippy::unwrap_used)]
mod tests {
use super::*;
use crate::mir::constant::Constant;
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 default_expr: Constant = 1i64.into();
let e: Expr = OptionGetOrElse::new(get_reg_expr, default_expr.into())
.unwrap()
.into();
assert_eq![sigma_serialize_roundtrip(&e), e];
}
}