1 files changed, 135 insertions, 0 deletions
diff --git a/runtime/CSharp3/Sources/Antlr3.Runtime.JavaExtensions/DictionaryExtensions.cs b/runtime/CSharp3/Sources/Antlr3.Runtime.JavaExtensions/DictionaryExtensions.cs
new file mode 100644
index 0000000..cd32ce9
--- /dev/null
+++ b/runtime/CSharp3/Sources/Antlr3.Runtime.JavaExtensions/DictionaryExtensions.cs
@@ -0,0 +1,135 @@
+/*
+ * [The "BSD licence"]
+ * Copyright (c) 2005-2008 Terence Parr
+ * All rights reserved.
+ *
+ * Conversion to C#:
+ * Copyright (c) 2008 Sam Harwell, Pixel Mine, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+namespace Antlr.Runtime.JavaExtensions
+{
+    using System.Collections.Generic;
+    using System.Linq;
+
+    using IDictionary = System.Collections.IDictionary;
+    using ObsoleteAttribute = System.ObsoleteAttribute;
+
+    public static class DictionaryExtensions
+    {
+        [Obsolete]
+        public static bool containsKey( this IDictionary map, object key )
+        {
+            return map.Contains( key );
+        }
+
+        [Obsolete]
+        public static object get( this IDictionary map, object key )
+        {
+            return map[key];
+        }
+
+        public static TValue get<TKey, TValue>( this IDictionary<TKey, TValue> map, TKey key )
+        {
+            TValue value;
+            if ( map.TryGetValue( key, out value ) )
+                return value;
+
+            if ( typeof( TValue ).IsValueType )
+                throw new KeyNotFoundException();
+
+            return default( TValue );
+        }
+
+        // disambiguates
+        public static TValue get<TKey, TValue>( this Dictionary<TKey, TValue> map, TKey key )
+        {
+            TValue value;
+            if ( map.TryGetValue( key, out value ) )
+                return value;
+
+            if ( typeof( TValue ).IsValueType )
+                throw new KeyNotFoundException();
+
+            return default( TValue );
+        }
+
+        public static TValue get<TKey, TValue>( this SortedList<TKey, TValue> map, TKey key )
+        {
+            TValue value;
+            if ( map.TryGetValue( key, out value ) )
+                return value;
+
+            if ( typeof( TValue ).IsValueType )
+                throw new KeyNotFoundException();
+
+            return default( TValue );
+        }
+
+        [Obsolete]
+        public static void put( this IDictionary map, object key, object value )
+        {
+            map[key] = value;
+        }
+
+        [Obsolete]
+        public static void put<TKey, TValue>( this IDictionary<TKey, TValue> map, TKey key, TValue value )
+        {
+            map[key] = value;
+        }
+
+        [Obsolete]
+        public static void put<TKey, TValue>( this Dictionary<TKey, TValue> map, TKey key, TValue value )
+        {
+            map[key] = value;
+        }
+
+        [Obsolete]
+        public static HashSet<object> keySet( this IDictionary map )
+        {
+            return new HashSet<object>( map.Keys.Cast<object>() );
+        }
+
+        [Obsolete]
+        public static HashSet<TKey> keySet<TKey, TValue>( this IDictionary<TKey, TValue> map )
+        {
+            return new HashSet<TKey>( map.Keys );
+        }
+
+        // disambiguates for Dictionary, which implements both IDictionary<T,K> and IDictionary
+        [Obsolete]
+        public static HashSet<TKey> keySet<TKey, TValue>( this Dictionary<TKey, TValue> map )
+        {
+            return new HashSet<TKey>( map.Keys );
+        }
+
+        [Obsolete]
+        public static HashSet<object> keySet<TKey, TValue>( this SortedList<TKey, TValue> map )
+        {
+            return new HashSet<object>( map.Keys.Cast<object>() );
+        }
+    }
+}