From ad5f1e4fd796d9c6f93bfd1ab102b21eb1756930 Mon Sep 17 00:00:00 2001
From: Paul Beckingham <paul@beckingham.net>
Date: Sun, 27 Dec 2015 11:18:47 -0500
Subject: [PATCH] LR0: Added ::dump method to display intermediate parsing
 table

---
 src/LR0.cpp | 36 ++++++++++++++++++++++++++++++++++++
 src/LR0.h   |  1 +
 2 files changed, 37 insertions(+)

diff --git a/src/LR0.cpp b/src/LR0.cpp
index 53d8dc0c..2b4e25bd 100644
--- a/src/LR0.cpp
+++ b/src/LR0.cpp
@@ -132,3 +132,39 @@ std::string LR0::dump () const
 }
 
 ////////////////////////////////////////////////////////////////////////////////
+std::string LR0::dump (std::vector <std::vector <std::string>>& augmented, States& states) const
+{
+  std::stringstream out;
+
+  for (unsigned int c = 0; c < states.size (); ++c)
+  {
+    out << "  [" << c << "] ";
+
+    for (unsigned int i = 0; i < states[c].size (); ++i)
+    {
+      if (i)
+        out << "      ";
+
+      out << augmented[states[c][i]._rule][0]
+          << " "
+          << augmented[states[c][i]._rule][1];
+
+      for (unsigned int t = 2; t < augmented[states[c][i]._rule].size (); t++)
+      {
+        if ((int)t - 2 == states[c][i]._cursor)
+          out << " .";
+
+        out << " " << augmented[states[c][i]._rule][t];
+      }
+
+      out << "\n";
+    }
+
+    out << "\n";
+  }
+
+  out << "\n";
+  return out.str ();
+}
+
+////////////////////////////////////////////////////////////////////////////////
diff --git a/src/LR0.h b/src/LR0.h
index 4371e37d..1b11840e 100644
--- a/src/LR0.h
+++ b/src/LR0.h
@@ -60,6 +60,7 @@ protected:
 
 private:
   bool expandNonTerminals (std::vector <std::vector <std::string>>&, std::vector <std::pair <int, int>>&);
+  std::string dump (std::vector <std::vector <std::string>>&, States&) const;
 
 private:
   //        state         column        result