From ee684e7734d63619130ddf2d8414518c811797af Mon Sep 17 00:00:00 2001
From: Jan Travnicek <Jan.Travnicek@fit.cvut.cz>
Date: Tue, 15 Jan 2019 14:40:36 +0100
Subject: [PATCH] add forgotten const in overloaded operators of tree and trie

---
 .../src/extensions/container/forward_tree.hpp | 24 +++++++++----------
 alib2std/src/extensions/container/tree.hpp    | 24 +++++++++----------
 alib2std/src/extensions/container/trie.hpp    | 12 +++++-----
 3 files changed, 30 insertions(+), 30 deletions(-)

diff --git a/alib2std/src/extensions/container/forward_tree.hpp b/alib2std/src/extensions/container/forward_tree.hpp
index b36e280ad8..b26490aeac 100644
--- a/alib2std/src/extensions/container/forward_tree.hpp
+++ b/alib2std/src/extensions/container/forward_tree.hpp
@@ -267,7 +267,7 @@ public:
 		 *
 		 * \return true if the two iterators are the same, false othervise
 		 */
-		bool operator ==( const const_structure_iterator & other ) {
+		bool operator ==( const const_structure_iterator & other ) const {
 			return node == other.node && virtual_node == other.virtual_node;
 		}
 
@@ -279,7 +279,7 @@ public:
 		 *
 		 * \return true if the two iterators are not the same, false othervise
 		 */
-		bool operator !=( const const_structure_iterator & other ) {
+		bool operator !=( const const_structure_iterator & other ) const {
 			return !( * this == other );
 		}
 
@@ -408,7 +408,7 @@ public:
 		 *
 		 * \return true if the two iterators are the same, false othervise
 		 */
-		bool operator ==( const const_prefix_iterator & other ) {
+		bool operator ==( const const_prefix_iterator & other ) const {
 			return node == other.node;
 		}
 
@@ -420,7 +420,7 @@ public:
 		 *
 		 * \return true if the two iterators are not the same, false othervise
 		 */
-		bool operator !=( const const_prefix_iterator & other ) {
+		bool operator !=( const const_prefix_iterator & other ) const {
 			return !( * this == other );
 		}
 
@@ -539,7 +539,7 @@ public:
 		 *
 		 * \return true if the two iterators are the same, false othervise
 		 */
-		bool operator ==( const const_postfix_iterator & other ) {
+		bool operator ==( const const_postfix_iterator & other ) const {
 			return node == other.node;
 		}
 
@@ -551,7 +551,7 @@ public:
 		 *
 		 * \return true if the two iterators are not the same, false othervise
 		 */
-		bool operator !=( const const_postfix_iterator & other ) {
+		bool operator !=( const const_postfix_iterator & other ) const {
 			return !( * this == other );
 		}
 
@@ -1049,7 +1049,7 @@ public:
 	 *
 	 * \return true if this instance is equal to other instance, false othervise
 	 */
-	bool operator ==( const forward_tree & other ) {
+	bool operator ==( const forward_tree & other ) const {
 		return compare ( other ) == 0;
 	}
 
@@ -1061,7 +1061,7 @@ public:
 	 *
 	 * \return true if this instance is not equal to other instance, false othervise
 	 */
-	bool operator !=( const forward_tree & other ) {
+	bool operator !=( const forward_tree & other ) const {
 		return compare ( other ) != 0;
 	}
 
@@ -1073,7 +1073,7 @@ public:
 	 *
 	 * \return true if this instance is smaller than other instance, false othervise
 	 */
-	bool operator <( const forward_tree & other ) {
+	bool operator <( const forward_tree & other ) const {
 		return compare ( other ) < 0;
 	}
 
@@ -1085,7 +1085,7 @@ public:
 	 *
 	 * \return true if this instance is smaller or equal than other instance, false othervise
 	 */
-	bool operator <=( const forward_tree & other ) {
+	bool operator <=( const forward_tree & other ) const {
 		return compare ( other ) <= 0;
 	}
 
@@ -1097,7 +1097,7 @@ public:
 	 *
 	 * \return true if this instance is greater than other instance, false othervise
 	 */
-	bool operator >( const forward_tree & other ) {
+	bool operator >( const forward_tree & other ) const {
 		return compare ( other ) > 0;
 	}
 
@@ -1109,7 +1109,7 @@ public:
 	 *
 	 * \return true if this instance is greater or equal than other instance, false othervise
 	 */
-	bool operator >=( const forward_tree & other ) {
+	bool operator >=( const forward_tree & other ) const {
 		return compare ( other ) >= 0;
 	}
 
diff --git a/alib2std/src/extensions/container/tree.hpp b/alib2std/src/extensions/container/tree.hpp
index bed9b6768a..d4ccf1ed4c 100644
--- a/alib2std/src/extensions/container/tree.hpp
+++ b/alib2std/src/extensions/container/tree.hpp
@@ -288,7 +288,7 @@ public:
 		 *
 		 * \return true if the two iterators are the same, false othervise
 		 */
-		bool operator ==( const const_structure_iterator & other ) {
+		bool operator ==( const const_structure_iterator & other ) const {
 			return node == other.node && virtual_node == other.virtual_node;
 		}
 
@@ -300,7 +300,7 @@ public:
 		 *
 		 * \return true if the two iterators are not the same, false othervise
 		 */
-		bool operator !=( const const_structure_iterator & other ) {
+		bool operator !=( const const_structure_iterator & other ) const {
 			return !( * this == other );
 		}
 
@@ -429,7 +429,7 @@ public:
 		 *
 		 * \return true if the two iterators are the same, false othervise
 		 */
-		bool operator ==( const const_prefix_iterator & other ) {
+		bool operator ==( const const_prefix_iterator & other ) const {
 			return node == other.node;
 		}
 
@@ -441,7 +441,7 @@ public:
 		 *
 		 * \return true if the two iterators are not the same, false othervise
 		 */
-		bool operator !=( const const_prefix_iterator & other ) {
+		bool operator !=( const const_prefix_iterator & other ) const {
 			return !( * this == other );
 		}
 
@@ -560,7 +560,7 @@ public:
 		 *
 		 * \return true if the two iterators are the same, false othervise
 		 */
-		bool operator ==( const const_postfix_iterator & other ) {
+		bool operator ==( const const_postfix_iterator & other ) const {
 			return node == other.node;
 		}
 
@@ -572,7 +572,7 @@ public:
 		 *
 		 * \return true if the two iterators are not the same, false othervise
 		 */
-		bool operator !=( const const_postfix_iterator & other ) {
+		bool operator !=( const const_postfix_iterator & other ) const {
 			return !( * this == other );
 		}
 
@@ -1172,7 +1172,7 @@ public:
 	 *
 	 * \return true if this instance is equal to other instance, false othervise
 	 */
-	bool operator ==( const tree & other ) {
+	bool operator ==( const tree & other ) const {
 		return compare ( other ) == 0;
 	}
 
@@ -1184,7 +1184,7 @@ public:
 	 *
 	 * \return true if this instance is not equal to other instance, false othervise
 	 */
-	bool operator !=( const tree & other ) {
+	bool operator !=( const tree & other ) const {
 		return compare ( other ) != 0;
 	}
 
@@ -1196,7 +1196,7 @@ public:
 	 *
 	 * \return true if this instance is smaller than other instance, false othervise
 	 */
-	bool operator <( const tree & other ) {
+	bool operator <( const tree & other ) const {
 		return compare ( other ) < 0;
 	}
 
@@ -1208,7 +1208,7 @@ public:
 	 *
 	 * \return true if this instance is smaller or equal than other instance, false othervise
 	 */
-	bool operator <=( const tree & other ) {
+	bool operator <=( const tree & other ) const {
 		return compare ( other ) <= 0;
 	}
 
@@ -1220,7 +1220,7 @@ public:
 	 *
 	 * \return true if this instance is greater than other instance, false othervise
 	 */
-	bool operator >( const tree & other ) {
+	bool operator >( const tree & other ) const {
 		return compare ( other ) > 0;
 	}
 
@@ -1232,7 +1232,7 @@ public:
 	 *
 	 * \return true if this instance is greater or equal than other instance, false othervise
 	 */
-	bool operator >=( const tree & other ) {
+	bool operator >=( const tree & other ) const {
 		return compare ( other ) >= 0;
 	}
 
diff --git a/alib2std/src/extensions/container/trie.hpp b/alib2std/src/extensions/container/trie.hpp
index f0a9900fc2..0e03be46ba 100644
--- a/alib2std/src/extensions/container/trie.hpp
+++ b/alib2std/src/extensions/container/trie.hpp
@@ -505,7 +505,7 @@ public:
 	 *
 	 * \return true if this instance is equal to other instance, false othervise
 	 */
-	bool operator ==( const trie & other ) {
+	bool operator ==( const trie & other ) const {
 		return compare ( other ) == 0;
 	}
 
@@ -517,7 +517,7 @@ public:
 	 *
 	 * \return true if this instance is not equal to other instance, false othervise
 	 */
-	bool operator !=( const trie & other ) {
+	bool operator !=( const trie & other ) const {
 		return compare ( other ) != 0;
 	}
 
@@ -529,7 +529,7 @@ public:
 	 *
 	 * \return true if this instance is smaller than other instance, false othervise
 	 */
-	bool operator <( const trie & other ) {
+	bool operator <( const trie & other ) const {
 		return compare ( other ) < 0;
 	}
 
@@ -541,7 +541,7 @@ public:
 	 *
 	 * \return true if this instance is smaller or equal than other instance, false othervise
 	 */
-	bool operator <=( const trie & other ) {
+	bool operator <=( const trie & other ) const {
 		return compare ( other ) <= 0;
 	}
 
@@ -553,7 +553,7 @@ public:
 	 *
 	 * \return true if this instance is greater than other instance, false othervise
 	 */
-	bool operator >( const trie & other ) {
+	bool operator >( const trie & other ) const {
 		return compare ( other ) > 0;
 	}
 
@@ -565,7 +565,7 @@ public:
 	 *
 	 * \return true if this instance is greater or equal than other instance, false othervise
 	 */
-	bool operator >=( const trie & other ) {
+	bool operator >=( const trie & other ) const {
 		return compare ( other ) >= 0;
 	}
 
-- 
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