From 82fa4e71dbfca8db43b7d9ea0dac5267966c94ee Mon Sep 17 00:00:00 2001
From: beder <jbeder@gmail.com>
Date: Wed, 7 Sep 2011 14:46:25 -0500
Subject: [PATCH] Implemented is()

---
 include/yaml-cpp/value/detail/node.h | 2 ++
 include/yaml-cpp/value/impl.h        | 9 +++++++--
 include/yaml-cpp/value/value.h       | 1 +
 3 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/include/yaml-cpp/value/detail/node.h b/include/yaml-cpp/value/detail/node.h
index 3932129..fdd5ecd 100644
--- a/include/yaml-cpp/value/detail/node.h
+++ b/include/yaml-cpp/value/detail/node.h
@@ -21,6 +21,8 @@ namespace YAML
 			node(): m_pRef(new node_ref) {}
 
 			ValueType::value type() const { return m_pRef->type(); }
+
+			bool is(const node& rhs) const { return m_pRef == rhs.m_pRef; }
 			
 			void set_ref(const node& rhs) { m_pRef = rhs.m_pRef; }
 			void set_data(const node& rhs) { m_pRef->set_data(*rhs.m_pRef); }
diff --git a/include/yaml-cpp/value/impl.h b/include/yaml-cpp/value/impl.h
index 197441d..566e333 100644
--- a/include/yaml-cpp/value/impl.h
+++ b/include/yaml-cpp/value/impl.h
@@ -57,6 +57,11 @@ namespace YAML
 	}
 	
 	// assignment
+	inline bool Value::is(const Value& rhs) const
+	{
+		return m_pNode->is(*rhs.m_pNode);
+	}
+
 	template<typename T>
 	inline Value& Value::operator=(const T& rhs)
 	{
@@ -88,7 +93,7 @@ namespace YAML
 	
 	inline Value& Value::operator=(const Value& rhs)
 	{
-		if(is(*this, rhs))
+		if(is(rhs))
 			return *this;
 		AssignNode(rhs);
 		return *this;
@@ -213,7 +218,7 @@ namespace YAML
 	
 	inline bool is(const Value& lhs, const Value& rhs)
 	{
-		return false;
+		return lhs.is(rhs);
 	}
 }
 
diff --git a/include/yaml-cpp/value/value.h b/include/yaml-cpp/value/value.h
index e269b34..039dfe2 100644
--- a/include/yaml-cpp/value/value.h
+++ b/include/yaml-cpp/value/value.h
@@ -31,6 +31,7 @@ namespace YAML
 		template<typename T> const T as() const;
 		
 		// assignment
+		bool is(const Value& rhs) const;
 		template<typename T> Value& operator=(const T& rhs);
 		Value& operator=(const Value& rhs);