add costs to node dump

inc/operators.h

@@ -33,7 +33,7 @@ struct std::hash<ColumnTag> {
 
 class Operator {
  public:
-  std::string format() const { return inner_format(0); }
+  std::string format(const TaskState& state) const { return inner_format(state, 0); }
 
   virtual void update_eqclasses(const TaskState& task_state,
                                 CHM& eq_classes) const = 0;
@@ -47,7 +47,7 @@ class Operator {
   virtual double cardinality(const TaskState& task_state) const = 0;
 
   virtual ~Operator() = default;
-  virtual std::string inner_format(size_t padding) const = 0;
+  virtual std::string inner_format(const TaskState& state, size_t padding) const = 0;
 };
 
 class JoinOperator : Operator {
@@ -66,7 +66,7 @@ class JoinOperator : Operator {
 
   std::set<size_t> get_known_tables() const override;
 
-  std::string inner_format(size_t padding) const override;
+  std::string inner_format(const TaskState& state, size_t padding) const override;
 
  private:
   Operator* left_tree_;
@@ -89,7 +89,7 @@ class ScanOperator : Operator {
 
   std::set<size_t> get_known_tables() const override;
 
-  std::string inner_format(size_t padding) const override;
+  std::string inner_format(const TaskState& state, size_t padding) const override;
 
  public:
   size_t table_;

src/operators.cpp

@@ -28,12 +28,12 @@ ColumnTag::ColumnTag(const char *inp) {
   col = inp[1];  // Next character after dot
 }
 
-std::string ScanOperator::inner_format(size_t padding) const {
+std::string ScanOperator::inner_format(const TaskState& state, size_t padding) const {
   std::string res;
   std::string padding_str(padding, ' ');
 
-  res += fmt::format("{}Scan Operator on table {}\n{}Constants: ", padding_str,
-                     table_, padding_str);
+  res += fmt::format("{}Scan Operator on table {} [cost = {}]\n{}Constants: ", padding_str,
+                     table_, cost(state), padding_str);
   for (auto &constant : constants_) {
     res += fmt::format("{} ", constant.col);
   }
@@ -42,7 +42,7 @@ std::string ScanOperator::inner_format(size_t padding) const {
   return res;
 }
 
-std::string JoinOperator::inner_format(size_t padding) const {
+std::string JoinOperator::inner_format(const TaskState& state, size_t padding) const {
   std::string padding_str(padding, ' ');
 
   std::string clause_list = "";
@@ -52,9 +52,9 @@ std::string JoinOperator::inner_format(size_t padding) const {
                     clause.second.table, clause.second.col);
   }
 
-  return fmt::format("{}Join on {}\n{}{}", padding_str, clause_list,
-                     left_tree_->inner_format(padding + 1),
-                     right_tree_->inner_format(padding + 1));
+  return fmt::format("{}Join on {} [cost = {}]\n{}{}", padding_str, clause_list, cost(state),
+                     left_tree_->inner_format(state, padding + 1),
+                     right_tree_->inner_format(state, padding + 1));
 }
 
 ScanOperator::ScanOperator(const char *inp) {