Merge branch 'master' into msbuilddll2

[mono.git] / mcs / class / corlib / System / Tuples.cs

diff --git a/mcs/class/corlib/System/Tuples.cs b/mcs/class/corlib/System/Tuples.cs
index 6256a029ebb13006cb8507cca724a4577f752d1a..27604d5307ba623babaf0cd419ae2125de7eca7f 100644 (file)
--- a/mcs/class/corlib/System/Tuples.cs
+++ b/mcs/class/corlib/System/Tuples.cs
@@ -27,7 +27,7 @@
 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 //
 
-#if MOONLIGHT || NET_4_0 || MOBILE
+#if NET_4_0
 
 using System;
 using System.Collections;
@@ -183,9 +183,10 @@ namespace System
 
                int IStructuralEquatable.GetHashCode (IEqualityComparer comparer)
                {
-                       int h = comparer.GetHashCode (item1);
-                       h = (h << 5) - h + comparer.GetHashCode (item2);
-                       return h;
+                       int h0;
+                       h0 = comparer.GetHashCode (item1);
+                       h0 = (h0 << 5) + h0 ^ comparer.GetHashCode (item2);
+                       return h0;
                }
 
                public override string ToString ()
@@ -263,10 +264,11 @@ namespace System
 
                int IStructuralEquatable.GetHashCode (IEqualityComparer comparer)
                {
-                       int h = comparer.GetHashCode (item1);
-                       h = (h << 5) - h + comparer.GetHashCode (item2);
-                       h = (h << 5) - h + comparer.GetHashCode (item3);
-                       return h;
+                       int h0;
+                       h0 = comparer.GetHashCode (item1);
+                       h0 = (h0 << 5) + h0 ^ comparer.GetHashCode (item2);
+                       h0 = (h0 << 5) + h0 ^ comparer.GetHashCode (item3);
+                       return h0;
                }
 
                public override string ToString ()
@@ -353,11 +355,13 @@ namespace System
 
                int IStructuralEquatable.GetHashCode (IEqualityComparer comparer)
                {
-                       int h = comparer.GetHashCode (item1);
-                       h = (h << 5) - h + comparer.GetHashCode (item2);
-                       h = (h << 5) - h + comparer.GetHashCode (item3);
-                       h = (h << 5) - h + comparer.GetHashCode (item4);
-                       return h;
+                       int h0, h1;
+                       h0 = comparer.GetHashCode (item1);
+                       h0 = (h0 << 5) + h0 ^ comparer.GetHashCode (item2);
+                       h1 = comparer.GetHashCode (item3);
+                       h1 = (h1 << 5) + h1 ^ comparer.GetHashCode (item4);
+                       h0 = (h0 << 5) + h0 ^ h1;
+                       return h0;
                }
 
                public override string ToString ()
@@ -453,12 +457,14 @@ namespace System
 
                int IStructuralEquatable.GetHashCode (IEqualityComparer comparer)
                {
-                       int h = comparer.GetHashCode (item1);
-                       h = (h << 5) - h + comparer.GetHashCode (item2);
-                       h = (h << 5) - h + comparer.GetHashCode (item3);
-                       h = (h << 5) - h + comparer.GetHashCode (item4);
-                       h = (h << 5) - h + comparer.GetHashCode (item5);
-                       return h;
+                       int h0, h1;
+                       h0 = comparer.GetHashCode (item1);
+                       h0 = (h0 << 5) + h0 ^ comparer.GetHashCode (item2);
+                       h1 = comparer.GetHashCode (item3);
+                       h1 = (h1 << 5) + h1 ^ comparer.GetHashCode (item4);
+                       h0 = (h0 << 5) + h0 ^ h1;
+                       h0 = (h0 << 5) + h0 ^ comparer.GetHashCode (item5);
+                       return h0;
                }
 
                public override string ToString ()
@@ -563,13 +569,16 @@ namespace System
 
                int IStructuralEquatable.GetHashCode (IEqualityComparer comparer)
                {
-                       int h = comparer.GetHashCode (item1);
-                       h = (h << 5) - h + comparer.GetHashCode (item2);
-                       h = (h << 5) - h + comparer.GetHashCode (item3);
-                       h = (h << 5) - h + comparer.GetHashCode (item4);
-                       h = (h << 5) - h + comparer.GetHashCode (item5);
-                       h = (h << 5) - h + comparer.GetHashCode (item6);
-                       return h;
+                       int h0, h1;
+                       h0 = comparer.GetHashCode (item1);
+                       h0 = (h0 << 5) + h0 ^ comparer.GetHashCode (item2);
+                       h1 = comparer.GetHashCode (item3);
+                       h1 = (h1 << 5) + h1 ^ comparer.GetHashCode (item4);
+                       h0 = (h0 << 5) + h0 ^ h1;
+                       h1 = comparer.GetHashCode (item5);
+                       h1 = (h1 << 5) + h1 ^ comparer.GetHashCode (item6);
+                       h0 = (h0 << 5) + h0 ^ h1;
+                       return h0;
                }
 
                public override string ToString ()
@@ -683,14 +692,17 @@ namespace System
 
                int IStructuralEquatable.GetHashCode (IEqualityComparer comparer)
                {
-                       int h = comparer.GetHashCode (item1);
-                       h = (h << 5) - h + comparer.GetHashCode (item2);
-                       h = (h << 5) - h + comparer.GetHashCode (item3);
-                       h = (h << 5) - h + comparer.GetHashCode (item4);
-                       h = (h << 5) - h + comparer.GetHashCode (item5);
-                       h = (h << 5) - h + comparer.GetHashCode (item6);
-                       h = (h << 5) - h + comparer.GetHashCode (item7);
-                       return h;
+                       int h0, h1;
+                       h0 = comparer.GetHashCode (item1);
+                       h0 = (h0 << 5) + h0 ^ comparer.GetHashCode (item2);
+                       h1 = comparer.GetHashCode (item3);
+                       h1 = (h1 << 5) + h1 ^ comparer.GetHashCode (item4);
+                       h0 = (h0 << 5) + h0 ^ h1;
+                       h1 = comparer.GetHashCode (item5);
+                       h1 = (h1 << 5) + h1 ^ comparer.GetHashCode (item6);
+                       h1 = (h1 << 5) + h1 ^ comparer.GetHashCode (item7);
+                       h0 = (h0 << 5) + h0 ^ h1;
+                       return h0;
                }
 
                public override string ToString ()
@@ -801,15 +813,19 @@ namespace System
 
                int IStructuralEquatable.GetHashCode (IEqualityComparer comparer)
                {
-                       int h = comparer.GetHashCode (item1);
-                       h = (h << 5) - h + comparer.GetHashCode (item2);
-                       h = (h << 5) - h + comparer.GetHashCode (item3);
-                       h = (h << 5) - h + comparer.GetHashCode (item4);
-                       h = (h << 5) - h + comparer.GetHashCode (item5);
-                       h = (h << 5) - h + comparer.GetHashCode (item6);
-                       h = (h << 5) - h + comparer.GetHashCode (item7);
-                       h = (h << 5) - h + comparer.GetHashCode (rest);
-                       return h;
+                       int h0, h1, h2;
+                       h0 = comparer.GetHashCode (item1);
+                       h0 = (h0 << 5) + h0 ^ comparer.GetHashCode (item2);
+                       h1 = comparer.GetHashCode (item3);
+                       h1 = (h1 << 5) + h1 ^ comparer.GetHashCode (item4);
+                       h0 = (h0 << 5) + h0 ^ h1;
+                       h1 = comparer.GetHashCode (item5);
+                       h1 = (h1 << 5) + h1 ^ comparer.GetHashCode (item6);
+                       h2 = comparer.GetHashCode (item7);
+                       h2 = (h2 << 5) + h2 ^ comparer.GetHashCode (rest);
+                       h1 = (h1 << 5) + h1 ^ h2;
+                       h0 = (h0 << 5) + h0 ^ h1;
+                       return h0;
                }
 
                public override string ToString ()
@@ -881,7 +897,7 @@ public class TupleGen
                        Console.WriteLine ("\t\t\tvar t = other as {0};", type_name);
                        Console.WriteLine ("\t\t\tif (t == null) {");
                        Console.WriteLine ("\t\t\t\tif (other == null) return 1;");
-                       Console.WriteLine ("\t\t\t\tthrow new ArgumentException ("other");");
+                       Console.WriteLine ("\t\t\t\tthrow new ArgumentException (\"other\");");
                        Console.WriteLine ("\t\t\t}");
                        Console.WriteLine ();
                        
@@ -937,10 +953,15 @@ public class TupleGen
                        if (arity == 1) {
                                Console.WriteLine ("\t\t\treturn comparer.GetHashCode ({0});", GetItemName (arity));
                        } else {
-                               Console.WriteLine ("\t\t\tint h = comparer.GetHashCode ({0});", GetItemName (1));
-                               for (int i = 2; i <= arity; ++i)
-                                       Console.WriteLine ("\t\t\th = (h << 5) - h + comparer.GetHashCode ({0});", GetItemName (i));
-                               Console.WriteLine ("\t\t\treturn h;");
+                               int varnum = IntLog2(arity);
+                               Console.Write ("\t\t\tint h0");
+                               for (int i = 1; i < varnum; ++i)
+                                       Console.Write (", h{0}", i);
+                               Console.WriteLine (";");
+
+                               WriteHash(0, 1, arity);
+
+                               Console.WriteLine ("\t\t\treturn h0;");
                        }
 
                        Console.WriteLine ("\t\t}");
@@ -967,6 +988,36 @@ public class TupleGen
                }
        }
 
+       static int IntLog2 (int n)
+       {
+               int r = -1;
+
+               while (n != 0) {
+                       n >>= 1;
+                       r++;
+               }
+
+               return r;
+       }
+
+       static void WriteHash (int destVar, int start, int count)
+       {
+               if (count == 1) {
+                       Console.WriteLine ("\t\t\th{0} = comparer.GetHashCode ({1});", destVar, GetItemName (start));
+               } else {
+                       int subCount = 1 << IntLog2(count-1);
+                       computeHash(destVar, start, subCount);
+                       start += subCount;
+                       count -= subCount;
+                       if (count == 1) {
+                               Console.WriteLine ("\t\t\th{0} = (h{0} << 5) + h{0} ^ comparer.GetHashCode ({1});", destVar, GetItemName (start));
+                       } else {
+                               WriteHash(destVar+1, start, count);
+                               Console.WriteLine ("\t\t\th{0} = (h{0} << 5) + h{0} ^ h{1};", destVar, destVar+1);
+                       }
+               }
+       }
+
        static string GetTypeName (int arity)
        {
                StringBuilder sb = new StringBuilder ();