feat: add EVMProjectionExec and EVMSliceExec (#778)

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# Rationale for this change
Add more `ProofExec` to `evm_proof_plan`
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 Add `NestedLoopJoinExec`.
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# What changes are included in this PR?
See title
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Yes.

Author: iajoiner

crates/proof-of-sql/src/sql/evm_proof_plan/plans.rs

@@ -6,10 +6,10 @@ use crate::{
     },
     sql::{
         proof_exprs::{AliasedDynProofExpr, TableExpr},
-        proof_plans::{DynProofPlan, EmptyExec, FilterExec, TableExec},
+        proof_plans::{DynProofPlan, EmptyExec, FilterExec, ProjectionExec, SliceExec, TableExec},
     },
 };
-use alloc::{string::String, vec::Vec};
+use alloc::{boxed::Box, string::String, vec::Vec};
 use serde::{Deserialize, Serialize};
 use sqlparser::ast::Ident;
 
@@ -19,6 +19,8 @@ pub(crate) enum EVMDynProofPlan {
     Filter(EVMFilterExec),
     Empty(EVMEmptyExec),
     Table(EVMTableExec),
+    Projection(EVMProjectionExec),
+    Slice(EVMSliceExec),
 }
 
 impl EVMDynProofPlan {
@@ -39,6 +41,14 @@ impl EVMDynProofPlan {
                 EVMFilterExec::try_from_proof_plan(filter_exec, table_refs, column_refs)
                     .map(Self::Filter)
             }
+            DynProofPlan::Projection(projection_exec) => {
+                EVMProjectionExec::try_from_proof_plan(projection_exec, table_refs, column_refs)
+                    .map(Self::Projection)
+            }
+            DynProofPlan::Slice(slice_exec) => {
+                EVMSliceExec::try_from_proof_plan(slice_exec, table_refs, column_refs)
+                    .map(Self::Slice)
+            }
             _ => Err(EVMProofPlanError::NotSupported),
         }
     }
@@ -59,6 +69,16 @@ impl EVMDynProofPlan {
             EVMDynProofPlan::Filter(filter_exec) => Ok(DynProofPlan::Filter(
                 filter_exec.try_into_proof_plan(table_refs, column_refs, output_column_names)?,
             )),
+            EVMDynProofPlan::Projection(projection_exec) => Ok(DynProofPlan::Projection(
+                projection_exec.try_into_proof_plan(
+                    table_refs,
+                    column_refs,
+                    output_column_names,
+                )?,
+            )),
+            EVMDynProofPlan::Slice(slice_exec) => Ok(DynProofPlan::Slice(
+                slice_exec.try_into_proof_plan(table_refs, column_refs)?,
+            )),
         }
     }
 }
@@ -175,6 +195,103 @@ impl EVMFilterExec {
     }
 }
 
+/// Represents a projection execution plan in EVM.
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+pub(crate) struct EVMProjectionExec {
+    input_plan: Box<EVMDynProofPlan>,
+    results: Vec<EVMDynProofExpr>,
+}
+
+impl EVMProjectionExec {
+    /// Try to create a `EVMProjectionExec` from a `ProjectionExec`.
+    pub(crate) fn try_from_proof_plan(
+        plan: &ProjectionExec,
+        table_refs: &IndexSet<TableRef>,
+        column_refs: &IndexSet<ColumnRef>,
+    ) -> EVMProofPlanResult<Self> {
+        Ok(Self {
+            input_plan: Box::new(EVMDynProofPlan::try_from_proof_plan(
+                plan.input(),
+                table_refs,
+                column_refs,
+            )?),
+            results: plan
+                .aliased_results()
+                .iter()
+                .map(|result| EVMDynProofExpr::try_from_proof_expr(&result.expr, column_refs))
+                .collect::<Result<_, _>>()?,
+        })
+    }
+
+    pub(crate) fn try_into_proof_plan(
+        &self,
+        table_refs: &IndexSet<TableRef>,
+        column_refs: &IndexSet<ColumnRef>,
+        output_column_names: &IndexSet<String>,
+    ) -> EVMProofPlanResult<ProjectionExec> {
+        Ok(ProjectionExec::new(
+            self.results
+                .iter()
+                .zip(output_column_names.iter())
+                .map(|(expr, name)| {
+                    Ok(AliasedDynProofExpr {
+                        expr: expr.try_into_proof_expr(column_refs)?,
+                        alias: Ident::new(name),
+                    })
+                })
+                .collect::<EVMProofPlanResult<Vec<_>>>()?,
+            Box::new(self.input_plan.try_into_proof_plan(
+                table_refs,
+                column_refs,
+                output_column_names,
+            )?),
+        ))
+    }
+}
+
+/// Represents a slice execution plan in EVM.
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+pub(crate) struct EVMSliceExec {
+    input_plan: Box<EVMDynProofPlan>,
+    skip: usize,
+    fetch: Option<usize>,
+}
+
+impl EVMSliceExec {
+    /// Try to create a `EVMSliceExec` from a `SliceExec`.
+    pub(crate) fn try_from_proof_plan(
+        plan: &SliceExec,
+        table_refs: &IndexSet<TableRef>,
+        column_refs: &IndexSet<ColumnRef>,
+    ) -> EVMProofPlanResult<Self> {
+        Ok(Self {
+            input_plan: Box::new(EVMDynProofPlan::try_from_proof_plan(
+                plan.input(),
+                table_refs,
+                column_refs,
+            )?),
+            skip: plan.skip(),
+            fetch: plan.fetch(),
+        })
+    }
+
+    pub(crate) fn try_into_proof_plan(
+        &self,
+        table_refs: &IndexSet<TableRef>,
+        column_refs: &IndexSet<ColumnRef>,
+    ) -> EVMProofPlanResult<SliceExec> {
+        Ok(SliceExec::new(
+            Box::new(self.input_plan.try_into_proof_plan(
+                table_refs,
+                column_refs,
+                &IndexSet::default(),
+            )?),
+            self.skip,
+            self.fetch,
+        ))
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -190,6 +307,126 @@ mod tests {
         },
     };
 
+    #[test]
+    fn we_can_put_projection_exec_in_evm() {
+        let table_ref: TableRef = "namespace.table".parse().unwrap();
+        let ident_a: Ident = "a".into();
+        let ident_b: Ident = "b".into();
+        let alias = "alias".to_string();
+
+        let column_ref_a = ColumnRef::new(table_ref.clone(), ident_a.clone(), ColumnType::BigInt);
+        let column_ref_b = ColumnRef::new(table_ref.clone(), ident_b.clone(), ColumnType::BigInt);
+
+        // Create a table exec to use as the input
+        let column_fields = vec![
+            ColumnField::new(ident_a.clone(), ColumnType::BigInt),
+            ColumnField::new(ident_b.clone(), ColumnType::BigInt),
+        ];
+        let table_exec = TableExec::new(table_ref.clone(), column_fields);
+
+        // Create a projection exec
+        let projection_exec = ProjectionExec::new(
+            vec![AliasedDynProofExpr {
+                expr: DynProofExpr::Column(ColumnExpr::new(column_ref_b.clone())),
+                alias: Ident::new(alias.clone()),
+            }],
+            Box::new(DynProofPlan::Table(table_exec)),
+        );
+
+        // Convert to EVM plan
+        let evm_projection_exec = EVMProjectionExec::try_from_proof_plan(
+            &projection_exec,
+            &indexset![table_ref.clone()],
+            &indexset![column_ref_a.clone(), column_ref_b.clone()],
+        )
+        .unwrap();
+
+        // Verify the structure
+        assert_eq!(evm_projection_exec.results.len(), 1);
+        assert!(matches!(
+            evm_projection_exec.results[0],
+            EVMDynProofExpr::Column(_)
+        ));
+        assert!(matches!(
+            *evm_projection_exec.input_plan,
+            EVMDynProofPlan::Table(_)
+        ));
+
+        // Roundtrip
+        let roundtripped_projection_exec = EVMProjectionExec::try_into_proof_plan(
+            &evm_projection_exec,
+            &indexset![table_ref.clone()],
+            &indexset![column_ref_a.clone(), column_ref_b.clone()],
+            &indexset![alias],
+        )
+        .unwrap();
+
+        // Verify the roundtripped plan has the expected structure
+        assert_eq!(roundtripped_projection_exec.aliased_results().len(), 1);
+        assert!(matches!(
+            roundtripped_projection_exec.aliased_results()[0].expr,
+            DynProofExpr::Column(_)
+        ));
+        assert!(matches!(
+            *roundtripped_projection_exec.input(),
+            DynProofPlan::Table(_)
+        ));
+    }
+
+    #[test]
+    fn we_can_put_slice_exec_in_evm() {
+        let table_ref: TableRef = "namespace.table".parse().unwrap();
+        let ident_a: Ident = "a".into();
+        let ident_b: Ident = "b".into();
+
+        let column_ref_a = ColumnRef::new(table_ref.clone(), ident_a.clone(), ColumnType::BigInt);
+        let column_ref_b = ColumnRef::new(table_ref.clone(), ident_b.clone(), ColumnType::BigInt);
+
+        // Create a table exec to use as the input
+        let column_fields = vec![
+            ColumnField::new(ident_a.clone(), ColumnType::BigInt),
+            ColumnField::new(ident_b.clone(), ColumnType::BigInt),
+        ];
+        let table_exec = TableExec::new(table_ref.clone(), column_fields);
+
+        // Create a slice exec
+        let skip = 10;
+        let fetch = Some(5);
+        let slice_exec = SliceExec::new(Box::new(DynProofPlan::Table(table_exec)), skip, fetch);
+
+        // Convert to EVM plan
+        let evm_slice_exec = EVMSliceExec::try_from_proof_plan(
+            &slice_exec,
+            &indexset![table_ref.clone()],
+            &indexset![column_ref_a.clone(), column_ref_b.clone()],
+        )
+        .unwrap();
+
+        // Verify the structure
+        assert_eq!(evm_slice_exec.skip, skip);
+        assert_eq!(evm_slice_exec.fetch, fetch);
+        assert!(matches!(
+            *evm_slice_exec.input_plan,
+            EVMDynProofPlan::Table(_)
+        ));
+
+        // Roundtrip
+        let roundtripped_slice_exec = EVMSliceExec::try_into_proof_plan(
+            &evm_slice_exec,
+            &indexset![table_ref.clone()],
+            &indexset![column_ref_a.clone(), column_ref_b.clone()],
+        )
+        .unwrap();
+
+        // Verify the roundtripped plan has the expected structure
+        assert_eq!(roundtripped_slice_exec.skip(), skip);
+        assert_eq!(roundtripped_slice_exec.fetch(), fetch);
+        assert!(matches!(
+            *roundtripped_slice_exec.input(),
+            DynProofPlan::Table(_)
+        ));
+    }
+
     #[test]
     fn we_can_put_empty_exec_in_evm() {
         let empty_exec = EmptyExec::new();

crates/proof-of-sql/src/sql/proof_plans/projection_exec.rs

@@ -40,6 +40,16 @@ impl ProjectionExec {
             input,
         }
     }
+
+    /// Get a reference to the input plan
+    pub fn input(&self) -> &DynProofPlan {
+        &self.input
+    }
+
+    /// Get a reference to the aliased results
+    pub fn aliased_results(&self) -> &[AliasedDynProofExpr] {
+        &self.aliased_results
+    }
 }
 
 impl ProofPlan for ProjectionExec {

crates/proof-of-sql/src/sql/proof_plans/slice_exec.rs

@@ -48,6 +48,21 @@ impl SliceExec {
     pub fn new(input: Box<DynProofPlan>, skip: usize, fetch: Option<usize>) -> Self {
         Self { input, skip, fetch }
     }
+
+    /// Get a reference to the input plan
+    pub fn input(&self) -> &DynProofPlan {
+        &self.input
+    }
+
+    /// Get the skip value
+    pub fn skip(&self) -> usize {
+        self.skip
+    }
+
+    /// Get the fetch value
+    pub fn fetch(&self) -> Option<usize> {
+        self.fetch
+    }
 }
 
 impl ProofPlan for SliceExec