From 27f71d810f81c6e8fc59e0997585cb9cd9c46b11 Mon Sep 17 00:00:00 2001
From: Paul Beckingham <paul@beckingham.net>
Date: Sat, 2 Jan 2016 14:42:39 -0500
Subject: [PATCH] LR0: Made more methods const

---
 src/LR0.cpp | 4 ++--
 src/LR0.h   | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/LR0.cpp b/src/LR0.cpp
index e13135b8..423ce100 100644
--- a/src/LR0.cpp
+++ b/src/LR0.cpp
@@ -94,7 +94,7 @@ void LR0::initialize (const Grammar& grammar)
 //   until no more items can be added to J;
 //   return J
 // end
-LR0::Closure LR0::getClosure (const Closure& items)
+LR0::Closure LR0::getClosure (const Closure& items) const
 {
   LR0::Closure closure;
   for (auto& item : items)
@@ -116,7 +116,7 @@ LR0::Closure LR0::getClosure (const Closure& items)
 
 ////////////////////////////////////////////////////////////////////////////////
 // Collect a unique set of expected symbols from the closure.
-std::set <std::string> LR0::getExpected (const Closure& closure)
+std::set <std::string> LR0::getExpected (const Closure& closure) const
 {
   std::set <std::string> expected;
   for (auto& item : closure)
diff --git a/src/LR0.h b/src/LR0.h
index f0566838..befb2c27 100644
--- a/src/LR0.h
+++ b/src/LR0.h
@@ -68,8 +68,8 @@ public:
   };
 
 private:
-  Closure getClosure (const Closure&);
-  std::set <std::string> getExpected (const Closure&);
+  Closure getClosure (const Closure&) const;
+  std::set <std::string> getExpected (const Closure&) const;
   Closure expand (const Closure&) const;
 
 private: