Method build_union

src/expr-test-util/src/lib.rs:528–538

(&mut self, stream_iter: &mut I)

    }

    fn build_union<I>(&mut self, stream_iter: &mut I) -> Result<MirRelationExpr, String>
    where
        I: Iterator<Item = TokenTree>,
    {
        let mut inputs: Vec<MirRelationExpr> =
            deserialize(stream_iter, "Vec<MirRelationExpr>", self)?;
        Ok(MirRelationExpr::Union {
            base: Box::new(inputs.remove(0)),
            inputs,
        })
    }

    fn build_special_mir_if_able<I>(
        &mut self,