Add recursive_initialization_configt::to_string

Added a debugging helper function. It was worth
keeping it around even after debugging.

Co-authored-by: Fotis Koutoulakis <fotis.koutoulakis@diffblue.com>
Co-authored-by: Hannes Steffenhagen <hannes.steffenhagen@diffblue.com>

Author: NlightNFotis

src/goto-harness/recursive_initialization.cpp

@@ -305,3 +305,36 @@ void recursive_initializationt::initialize_dynamic_array(
 
   body.add(code_assignt{pointer, index_exprt{arrays, nondet_index}});
 }
+
+std::string recursive_initialization_configt::to_string() const
+{
+  std::ostringstream out{};
+  out << "recursive_initialization_config {"
+      << "\n  min_null_tree_depth = " << min_null_tree_depth
+      << "\n  max_nondet_tree_depth = " << max_nondet_tree_depth
+      << "\n  mode = " << mode
+      << "\n  max_dynamic_array_size = " << max_dynamic_array_size
+      << "\n  min_dynamic_array_size = " << min_dynamic_array_size
+      << "\n  pointers_to_treat_as_arrays = [";
+  for(auto const &pointer : pointers_to_treat_as_arrays)
+  {
+    out << "\n    " << pointer;
+  }
+  out << "\n  ]"
+      << "\n  variables_that_hold_array_sizes = [";
+  for(auto const &array_size : variables_that_hold_array_sizes)
+  {
+    out << "\n    " << array_size;
+  }
+  out << "\n  ]";
+  out << "\n  array_name_to_associated_size_variable = [";
+  for(auto const &associated_array_size :
+      array_name_to_associated_array_size_variable)
+  {
+    out << "\n    " << associated_array_size.first << " -> "
+        << associated_array_size.second;
+  }
+  out << "\n  ]";
+  out << "\n}";
+  return out.str();
+}

src/goto-harness/recursive_initialization.h

@@ -31,6 +31,8 @@ struct recursive_initialization_configt
   std::set<irep_idt> pointers_to_treat_as_arrays;
   std::set<irep_idt> variables_that_hold_array_sizes;
   std::map<irep_idt, irep_idt> array_name_to_associated_array_size_variable;
+
+  std::string to_string() const; // for debugging purposes
 };
 
 /// Class for generating initialisation code