X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.utils.datastructures%2Fsrc%2Forg%2Fsimantics%2Futils%2Fdatastructures%2Fmap%2FAssociativity.java;fp=bundles%2Forg.simantics.utils.datastructures%2Fsrc%2Forg%2Fsimantics%2Futils%2Fdatastructures%2Fmap%2FAssociativity.java;h=c21dd888e0db7b9d8d9111815cb81b4ec9b32782;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

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
index 000000000..c21dd888e
--- /dev/null
+++ b/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/map/Associativity.java
@@ -0,0 +1,76 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.utils.datastructures.map;
+
+
+/**
+ * Description associativity of dimensions.
+ * The maximum number of dimensions is 32.
+ *
+ * @author Toni Kalajainen <toni.kalajainen@vtt.fi>
+ */
+public final class Associativity {
+		
+	public static Associativity of(boolean...dimensionAssociativity)
+	{
+		return new Associativity(dimensionAssociativity);
+	}	
+	
+	public static Associativity[] fullAssociativity(int level)
+	{		
+		int count = (1 << level)-1;
+		Associativity[] result = new Associativity[count];
+		for (int i=0; i<count; i++) 
+			result[i] = new Associativity(level, i);
+		return result;
+	}
+	
+	public int dimensionAssociativity;
+	public int level;
+	
+	public Associativity(boolean...dimensionAssociativity)
+	{
+		if (dimensionAssociativity==null || dimensionAssociativity.length>32)
+			throw new IllegalArgumentException();
+		
+		int mask = 1;
+		for (boolean b : dimensionAssociativity) {
+			if (b) this.dimensionAssociativity |= mask;
+			mask <<= 1;
+		}
+		
+		level = dimensionAssociativity.length;
+	}
+	public Associativity(int level, int dimensionAssociativity)
+	{
+		this.dimensionAssociativity = dimensionAssociativity;
+		this.level = level;
+	}
+	
+	@Override
+	public int hashCode() {
+		return dimensionAssociativity;
+	}
+	
+	@Override
+	public boolean equals(Object obj) {
+        if (obj == null) return false;
+        if (!(obj.getClass().equals(this.getClass()))) return false;        
+        Associativity other = (Associativity) obj;			
+		return dimensionAssociativity == other.dimensionAssociativity;
+	}
+	
+	public int getLevel() {
+		return level;
+	}
+	
+}