From f658c5d35c2a901dda032d692519b148c0f7781c Mon Sep 17 00:00:00 2001
From: Paul Beckingham <paul@beckingham.net>
Date: Sat, 2 Jan 2016 14:27:00 -0500
Subject: [PATCH] LR0: Added ::getExpected to ::closure

---
 src/LR0.cpp | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/src/LR0.cpp b/src/LR0.cpp
index 7a8e7252..bb095da3 100644
--- a/src/LR0.cpp
+++ b/src/LR0.cpp
@@ -97,10 +97,20 @@ void LR0::initialize (const Grammar& grammar)
 LR0::Closure LR0::getClosure (const Closure& items)
 {
   LR0::Closure closure;
-
-  for (auto & item : items)
+  for (auto& item : items)
+  {
+    // closure(I) includes I.
     closure.push_back (item);
 
+    // Obtain all the expected symbols.
+    auto expected = getExpectations (items);
+    for (auto& exp : expected)
+    {
+      std::cout << "# Expecting " << exp << "\n";
+      std::cout << "# Add expansion of " << exp << "\n";
+    }
+  }
+
   return closure;
 }