fix readonly build

1 files changed, 40 insertions, 0 deletions

diff --git a/Mono.Cecil.Metadata/Row.cs b/Mono.Cecil.Metadata/Row.cs
index 024bc67..ab491a6 100644
--- a/Mono.Cecil.Metadata/Row.cs
+++ b/Mono.Cecil.Metadata/Row.cs
@@ -26,6 +26,8 @@
 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 //
 
+using System.Collections.Generic;
+
 namespace Mono.Cecil.Metadata {
 
 	struct Row<T1, T2> {
@@ -127,4 +129,42 @@ namespace Mono.Cecil.Metadata {
 			Col9 = col9;
 		}
 	}
+
+	sealed class RowEqualityComparer : IEqualityComparer<Row<string, string>>, IEqualityComparer<Row<uint, uint>>, IEqualityComparer<Row<uint, uint, uint>> {
+
+		public bool Equals (Row<string, string> x, Row<string, string> y)
+		{
+			return x.Col1 == y.Col1
+				&& x.Col2 == y.Col2;
+		}
+
+		public int GetHashCode (Row<string, string> obj)
+		{
+			string x = obj.Col1, y = obj.Col2;
+			return (x != null ? x.GetHashCode () : 0) ^ (y != null ? y.GetHashCode () : 0);
+		}
+
+		public bool Equals (Row<uint, uint> x, Row<uint, uint> y)
+		{
+			return x.Col1 == y.Col1
+				&& x.Col2 == y.Col2;
+		}
+
+		public int GetHashCode (Row<uint, uint> obj)
+		{
+			return (int) (obj.Col1 ^ obj.Col2);
+		}
+
+		public bool Equals (Row<uint, uint, uint> x, Row<uint, uint, uint> y)
+		{
+			return x.Col1 == y.Col1
+				&& x.Col2 == y.Col2
+				&& x.Col3 == y.Col3;
+		}
+
+		public int GetHashCode (Row<uint, uint, uint> obj)
+		{
+			return (int) (obj.Col1 ^ obj.Col2 ^ obj.Col3);
+		}
+	}
 }