Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.utils.datastructures / src / org / simantics / utils / datastructures / map / Associativity.java

diff --git a/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/map/Associativity.java b/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/map/Associativity.java
new file mode 100644 (file)
index 0000000..c21dd88
--- /dev/null
+++ b/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/map/Associativity.java
@@ -0,0 +1,76 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.utils.datastructures.map;\r
+\r
+\r
+/**\r
+ * Description associativity of dimensions.\r
+ * The maximum number of dimensions is 32.\r
+ *\r
+ * @author Toni Kalajainen <toni.kalajainen@vtt.fi>\r
+ */\r
+public final class Associativity {\r
+               \r
+       public static Associativity of(boolean...dimensionAssociativity)\r
+       {\r
+               return new Associativity(dimensionAssociativity);\r
+       }       \r
+       \r
+       public static Associativity[] fullAssociativity(int level)\r
+       {               \r
+               int count = (1 << level)-1;\r
+               Associativity[] result = new Associativity[count];\r
+               for (int i=0; i<count; i++) \r
+                       result[i] = new Associativity(level, i);\r
+               return result;\r
+       }\r
+       \r
+       public int dimensionAssociativity;\r
+       public int level;\r
+       \r
+       public Associativity(boolean...dimensionAssociativity)\r
+       {\r
+               if (dimensionAssociativity==null || dimensionAssociativity.length>32)\r
+                       throw new IllegalArgumentException();\r
+               \r
+               int mask = 1;\r
+               for (boolean b : dimensionAssociativity) {\r
+                       if (b) this.dimensionAssociativity |= mask;\r
+                       mask <<= 1;\r
+               }\r
+               \r
+               level = dimensionAssociativity.length;\r
+       }\r
+       public Associativity(int level, int dimensionAssociativity)\r
+       {\r
+               this.dimensionAssociativity = dimensionAssociativity;\r
+               this.level = level;\r
+       }\r
+       \r
+       @Override\r
+       public int hashCode() {\r
+               return dimensionAssociativity;\r
+       }\r
+       \r
+       @Override\r
+       public boolean equals(Object obj) {\r
+        if (obj == null) return false;\r
+        if (!(obj.getClass().equals(this.getClass()))) return false;        \r
+        Associativity other = (Associativity) obj;                     \r
+               return dimensionAssociativity == other.dimensionAssociativity;\r
+       }\r
+       \r
+       public int getLevel() {\r
+               return level;\r
+       }\r
+       \r
+}\r