From 7126046049c88abef33593a3fc2cf0140c9c80d6 Mon Sep 17 00:00:00 2001
From: Paul Beckingham <paul@beckingham.net>
Date: Tue, 5 Jan 2016 01:15:30 -0500
Subject: [PATCH] LR0: Added ::initializeFirstState

---
 src/LR0.cpp | 14 ++++++++++++++
 src/LR0.h   |  1 +
 2 files changed, 15 insertions(+)

diff --git a/src/LR0.cpp b/src/LR0.cpp
index f7b365b8..d6afd678 100644
--- a/src/LR0.cpp
+++ b/src/LR0.cpp
@@ -128,6 +128,20 @@ LR0::Closure LR0::getClosure (const std::string& symbol) const
   return result;
 }
 
+////////////////////////////////////////////////////////////////////////////////
+void LR0::initializeFirstState (States& states) const
+{
+  LR0::Closure result;
+  for (unsigned int r = 0; r < _augmented.size (); ++r)
+  {
+    Item item (_augmented[r]);
+    item.setGrammarRuleIndex (r);
+    result.push_back (item);
+  }
+
+  states.push_back (result);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 void LR0::closeState (States& states, const int state) const
 {
diff --git a/src/LR0.h b/src/LR0.h
index a4ad5262..3b0437dd 100644
--- a/src/LR0.h
+++ b/src/LR0.h
@@ -70,6 +70,7 @@ public:
 private:
   std::set <std::string> getExpectedSymbols (const Closure&) const;
   Closure getClosure (const std::string&) const;
+  void initializeFirstState (States&) const;
   void closeState (States&, const int) const;
 
 private: