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;
use super::expr::Expr;
use super::expr::InvalidArgumentError;
use crate::has_opcode::HasStaticOpCode;
#[derive(PartialEq, Eq, Debug, Clone)]
pub struct ByIndex {
pub input: Box<Expr>,
pub index: Box<Expr>,
pub default: Option<Box<Expr>>,
input_elem_tpe: SType,
}
impl ByIndex {
pub fn new(
input: Expr,
index: Expr,
default: Option<Box<Expr>>,
) -> Result<Self, InvalidArgumentError> {
let input_elem_type: SType = match input.post_eval_tpe() {
SType::SColl(elem_type) => Ok(*elem_type),
_ => Err(InvalidArgumentError(format!(
"Expected ByIndex input to be SColl, got {0:?}",
input.tpe()
))),
}?;
if index.post_eval_tpe() != SType::SInt {
return Err(InvalidArgumentError(format!(
"ByIndex: expected index type to be SInt, got {0:?}",
index
)));
}
if !default
.clone()
.map(|expr| expr.post_eval_tpe() == input_elem_type)
.unwrap_or(true)
{
return Err(InvalidArgumentError(format!(
"ByIndex: expected default type to be {0:?}, got {1:?}",
input_elem_type, default
)));
}
Ok(Self {
input: input.into(),
index: index.into(),
default,
input_elem_tpe: input_elem_type,
})
}
pub fn tpe(&self) -> SType {
self.input_elem_tpe.clone()
}
}
impl HasStaticOpCode for ByIndex {
const OP_CODE: OpCode = OpCode::BY_INDEX;
}
impl SigmaSerializable for ByIndex {
fn sigma_serialize<W: SigmaByteWrite>(&self, w: &mut W) -> SigmaSerializeResult {
self.input.sigma_serialize(w)?;
self.index.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 index = Expr::sigma_parse(r)?;
let default = Option::<Box<Expr>>::sigma_parse(r)?;
Ok(Self::new(input, index, default)?)
}
}
#[cfg(feature = "arbitrary")]
#[allow(clippy::unwrap_used)]
mod arbitrary {
use super::*;
use crate::mir::expr::arbitrary::ArbExprParams;
use proptest::prelude::*;
use proptest::result::Probability;
impl Arbitrary for ByIndex {
type Strategy = BoxedStrategy<Self>;
type Parameters = ArbExprParams;
fn arbitrary_with(args: Self::Parameters) -> Self::Strategy {
(
any_with::<Expr>(ArbExprParams {
tpe: SType::SColl(args.tpe.clone().into()),
depth: args.depth,
}),
any_with::<Expr>(ArbExprParams {
tpe: SType::SInt,
depth: 0,
}),
any_with::<Option<Box<Expr>>>((
Probability::default(),
ArbExprParams {
tpe: args.tpe,
depth: 0,
},
)),
)
.prop_map(|(input, index, default)| Self::new(input, index, default).unwrap())
.boxed()
}
}
}
#[cfg(test)]
#[cfg(feature = "arbitrary")]
#[allow(clippy::panic)]
mod tests {
use super::*;
use crate::mir::expr::Expr;
use crate::serialization::sigma_serialize_roundtrip;
use proptest::prelude::*;
proptest! {
#![proptest_config(ProptestConfig::with_cases(16))]
#[test]
fn ser_roundtrip(v in any::<ByIndex>()) {
let expr: Expr = v.into();
prop_assert_eq![sigma_serialize_roundtrip(&expr), expr];
}
}
}