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 Filter {
pub input: Box<Expr>,
pub condition: Box<Expr>,
pub elem_tpe: SType,
}
impl Filter {
pub fn new(input: Expr, condition: 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 Map input to be SColl, got {0:?}",
input.tpe()
))),
}?;
match condition.tpe() {
SType::SFunc(sfunc)
if sfunc.t_dom == vec![input_elem_type.clone()]
&& *sfunc.t_range == SType::SBoolean =>
{
Ok(Filter {
input: input.into(),
condition: condition.into(),
elem_tpe: input_elem_type,
})
}
_ => Err(InvalidArgumentError(format!(
"Invalid condition tpe: {0:?}",
condition.tpe()
))),
}
}
pub fn tpe(&self) -> SType {
SType::SColl(self.elem_tpe.clone().into())
}
}
impl HasStaticOpCode for Filter {
const OP_CODE: OpCode = OpCode::FILTER;
}
impl SigmaSerializable for Filter {
fn sigma_serialize<W: SigmaByteWrite>(&self, w: &mut W) -> SigmaSerializeResult {
self.input.sigma_serialize(w)?;
self.condition.sigma_serialize(w)
}
fn sigma_parse<R: SigmaByteRead>(r: &mut R) -> Result<Self, SigmaParsingError> {
let input = Expr::sigma_parse(r)?;
let condition = Expr::sigma_parse(r)?;
Ok(Filter::new(input, condition)?)
}
}
#[cfg(feature = "arbitrary")]
#[allow(clippy::unwrap_used)]
mod arbitrary {
use super::*;
use crate::mir::expr::arbitrary::ArbExprParams;
use crate::types::sfunc::SFunc;
use proptest::prelude::*;
impl Arbitrary for Filter {
type Strategy = BoxedStrategy<Self>;
type Parameters = ();
fn arbitrary_with(_args: Self::Parameters) -> Self::Strategy {
(
any_with::<Expr>(ArbExprParams {
tpe: SType::SColl(SType::SBoolean.into()),
depth: 1,
}),
any_with::<Expr>(ArbExprParams {
tpe: SType::SFunc(SFunc {
t_dom: vec![SType::SBoolean],
t_range: SType::SBoolean.into(),
tpe_params: vec![],
}),
depth: 0,
}),
)
.prop_map(|(input, mapper)| Filter::new(input, mapper).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::<Filter>()) {
let expr: Expr = v.into();
prop_assert_eq![sigma_serialize_roundtrip(&expr), expr];
}
}
}