2 files changed, 12 insertions, 0 deletions
diff --git a/include/cru/parse/Grammar.hpp b/include/cru/parse/Grammar.hpp
index 5935e703..42649c30 100644
--- a/include/cru/parse/Grammar.hpp
+++ b/include/cru/parse/Grammar.hpp
@@ -35,6 +35,11 @@ class Grammar : public Object {
     return productions_;
   }
 
+  Grammar* Clone() const;
+
+ public:  // Algorithms
+  void EliminateLeftRecursions();
+
  private:
   Nonterminal* start_symbol_;
   std::vector<Terminal*> terminals_;
diff --git a/include/cru/parse/Production.hpp b/include/cru/parse/Production.hpp
index bd05a8c4..8a1331b9 100644
--- a/include/cru/parse/Production.hpp
+++ b/include/cru/parse/Production.hpp
@@ -20,12 +20,19 @@ class Production : public Object {
  public:
   Grammar* GetGrammar() const { return grammar_; }
 
+  String GetName() const { return name_; }
+  void SetName(String name) { name_ = std::move(name); }
+
   Nonterminal* GetLeft() const { return left_; }
   void SetLeft(Nonterminal* left);
 
   const std::vector<Symbol*>& GetRight() const { return right_; }
   void SetRight(std::vector<Symbol*> right);
 
+  bool IsLeftRecursion() const {
+    return !right_.empty() && left_ == right_.front();
+  }
+
  private:
   Grammar* grammar_;
   String name_;