From e85e0e2108d1c00dc852e0066bd486b22312a388 Mon Sep 17 00:00:00 2001
From: Ray Speth <speth@mit.edu>
Date: Tue, 23 Jan 2018 11:19:50 -0500
Subject: [PATCH] Fix constness of some AnyMap functions

---
 include/cantera/base/AnyMap.h     | 4 ++--
 include/cantera/base/AnyMap.inl.h | 2 +-
 src/base/AnyMap.cpp               | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/cantera/base/AnyMap.h b/include/cantera/base/AnyMap.h
index 1b3672162..ffb67daa3 100644
--- a/include/cantera/base/AnyMap.h
+++ b/include/cantera/base/AnyMap.h
@@ -92,7 +92,7 @@ public:
     AnyValue& operator=(const std::map<std::string, T> items);
 
     template<class T>
-    std::map<std::string, T> asMap();
+    std::map<std::string, T> asMap() const;
 
 private:
     std::string demangle(const std::type_info& type) const;
@@ -177,7 +177,7 @@ public:
 
     AnyValue& operator[](const std::string& key);
 
-    AnyValue& at(const std::string& key);
+    const AnyValue& at(const std::string& key) const;
 
     bool hasKey(const std::string& key) const;
 
diff --git a/include/cantera/base/AnyMap.inl.h b/include/cantera/base/AnyMap.inl.h
index 7b59b4b12..b87ff3c55 100644
--- a/include/cantera/base/AnyMap.inl.h
+++ b/include/cantera/base/AnyMap.inl.h
@@ -103,7 +103,7 @@ inline AnyMap& AnyValue::as<AnyMap>() {
 }
 
 template<class T>
-std::map<std::string, T> AnyValue::asMap()
+std::map<std::string, T> AnyValue::asMap() const
 {
     std::map<std::string, T> dest;
     for (const auto& item : as<AnyMap>().m_data) {
diff --git a/src/base/AnyMap.cpp b/src/base/AnyMap.cpp
index 2917e00a9..eeaff2b6a 100644
--- a/src/base/AnyMap.cpp
+++ b/src/base/AnyMap.cpp
@@ -164,7 +164,7 @@ AnyValue& AnyMap::operator[](const std::string& key)
     }
 }
 
-AnyValue& AnyMap::at(const std::string& key)
+const AnyValue& AnyMap::at(const std::string& key) const
 {
     const auto& slash = boost::ifind_first(key, "/");
     if (!slash) {