From 498947c71897bfad865d37252df6689c1a78e1d8 Mon Sep 17 00:00:00 2001
From: "arseny.kapoulkine"
 <arseny.kapoulkine@99668b35-9821-0410-8761-19e4c4f06640>
Date: Mon, 18 Oct 2010 16:59:31 +0000
Subject: Fixed internal_object() const-correctness, added xml_node::hash_value
 and xml_attribute::hash_value functions

git-svn-id: http://pugixml.googlecode.com/svn/trunk@767 99668b35-9821-0410-8761-19e4c4f06640
---
 src/pugixml.cpp | 14 ++++++++++++--
 src/pugixml.hpp | 10 ++++++++--
 2 files changed, 20 insertions(+), 4 deletions(-)

(limited to 'src')

diff --git a/src/pugixml.cpp b/src/pugixml.cpp
index febf2eb..1142930 100644
--- a/src/pugixml.cpp
+++ b/src/pugixml.cpp
@@ -3420,7 +3420,12 @@ namespace pugi
 		return (_attr && _attr->value) ? _attr->value : PUGIXML_TEXT("");
 	}
 
-	xml_attribute_struct* xml_attribute::internal_object()
+    size_t xml_attribute::hash_value() const
+    {
+        return static_cast<size_t>(reinterpret_cast<uintptr_t>(_attr) / sizeof(xml_attribute_struct));
+    }
+
+	xml_attribute_struct* xml_attribute::internal_object() const
 	{
         return _attr;
 	}
@@ -4134,7 +4139,12 @@ namespace pugi
 		return walker.end(arg_end);
 	}
 
-	xml_node_struct* xml_node::internal_object()
+    size_t xml_node::hash_value() const
+    {
+        return static_cast<size_t>(reinterpret_cast<uintptr_t>(_root) / sizeof(xml_node_struct));
+    }
+
+	xml_node_struct* xml_node::internal_object() const
 	{
         return _root;
 	}
diff --git a/src/pugixml.hpp b/src/pugixml.hpp
index 8fba12a..9b0d0d6 100644
--- a/src/pugixml.hpp
+++ b/src/pugixml.hpp
@@ -321,8 +321,11 @@ namespace pugi
     	xml_attribute next_attribute() const;
     	xml_attribute previous_attribute() const;
 
+        // Get hash value (unique for handles to the same object)
+        size_t hash_value() const;
+
 		// Get internal pointer
-		xml_attribute_struct* internal_object();
+		xml_attribute_struct* internal_object() const;
 	};
 
 #ifdef __BORLANDC__
@@ -532,8 +535,11 @@ namespace pugi
 		// Get node offset in parsed file/string (in char_t units) for debugging purposes
 		ptrdiff_t offset_debug() const;
 
+        // Get hash value (unique for handles to the same object)
+        size_t hash_value() const;
+
 		// Get internal pointer
-		xml_node_struct* internal_object();
+		xml_node_struct* internal_object() const;
 	};
 
 #ifdef __BORLANDC__
-- 
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