X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.databoard%2Fsrc%2Forg%2Fsimantics%2Fdataboard%2Fprimitives%2FUnsignedLong.java;fp=bundles%2Forg.simantics.databoard%2Fsrc%2Forg%2Fsimantics%2Fdataboard%2Fprimitives%2FUnsignedLong.java;h=9761a145f120c37f6daa9405a79b6d918aa35782;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.databoard/src/org/simantics/databoard/primitives/UnsignedLong.java b/bundles/org.simantics.databoard/src/org/simantics/databoard/primitives/UnsignedLong.java
new file mode 100644
index 000000000..9761a145f
--- /dev/null
+++ b/bundles/org.simantics.databoard/src/org/simantics/databoard/primitives/UnsignedLong.java
@@ -0,0 +1,200 @@
+package org.simantics.databoard.primitives;
+
+import java.math.BigInteger;
+
+
+/**
+ * Unsigned immutable 64-bit integer value. The value is between 0 and 18446744073709551615.
+ *
+ * @author Toni Kalajainen <toni.kalajainen@iki.fi>
+ */
+public abstract class UnsignedLong extends Number implements Comparable<Number> {
+
+	static final long serialVersionUID = 1L;
+	static final long L_MIN_VALUE = 0;
+	static final BigInteger HALF = new BigInteger("9223372036854775808"); // 2^63
+	static final BigInteger BI_MIN_VALUE = new BigInteger("0");
+	static final BigInteger BI_MAX_VALUE = new BigInteger("18446744073709551615"); // 2^64-1
+	
+	public static final UnsignedLong MIN_VALUE, MAX_VALUE, ZERO;
+	
+
+	/** Value container */
+	long value;
+	
+	/**
+	 * Get cached or create new immutable unsigned long
+	 *  
+	 * @param value
+	 * @return immutable unsigned long
+	 */
+    public static UnsignedLong valueOf(long value) {
+		if ( value>=0 && value<CACHE.length ) return CACHE[(int)value];
+    	if ( value<L_MIN_VALUE ) throw new IllegalArgumentException("Argument is not within range");
+		return new UnsignedLong.Immutable(value);    	
+    }    
+	
+    /**
+     * Get cached or create new immutable unsigned long
+     * 
+     * @param bits long bits
+     * @return immutable unsigned long
+     */
+    public static UnsignedLong fromBits(long bits) {
+		if (bits>=0 && bits<CACHE.length) return CACHE[(int)bits];
+    	UnsignedLong result = new UnsignedLong.Immutable();    	
+    	result.value = bits;
+    	return result;
+    }
+    
+	public static class Mutable extends UnsignedLong {
+	
+		private static final long serialVersionUID = 1L;
+
+		Mutable() {}
+		
+		public Mutable(int value) throws IllegalArgumentException {
+	    	if ( value<L_MIN_VALUE ) throw new IllegalArgumentException("Argument is not within range");
+	        this.value = value;
+	    }
+
+	    public Mutable(long value) throws IllegalArgumentException {
+	    	if ( value<L_MIN_VALUE ) throw new IllegalArgumentException("Argument is not within range");
+	        this.value = (int) value;
+	    }
+
+	    public Mutable(BigInteger value) throws IllegalArgumentException {
+			if (value.compareTo(BI_MIN_VALUE)<0 || value.compareTo(BI_MAX_VALUE)>0) throw new IllegalArgumentException("Argument is not within range");		
+			this.value = value.compareTo(HALF)<0 ? value.longValue() : value.subtract(HALF).longValue() | 0x80000000l;
+		}
+	    
+	    public Mutable(String stringValue) throws IllegalArgumentException {
+	        long value = Long.parseLong(stringValue);
+	    	if ( value<L_MIN_VALUE ) throw new IllegalArgumentException("Argument is not within range");
+	        this.value = (int) value;
+	    }	
+	    
+	    public static Mutable fromBits(long bits) {
+	    	Mutable result = new Mutable();
+	    	result.value = bits;
+	    	return result;
+	    }	    
+	    
+	    public void setFromBits(int intBits) {
+	    	this.value = intBits;
+	    }
+	    
+	    public void setValue(int value) {
+	    	if ( value<L_MIN_VALUE ) throw new IllegalArgumentException("Argument is not within range");
+	        this.value = value;
+	    }
+	    
+	    public void setValue(long value) {
+	    	if ( value<L_MIN_VALUE ) throw new IllegalArgumentException("Argument is not within range");
+	        this.value = (int) value;
+	    }
+
+	    public void setValue(BigInteger value) {
+			if (value.compareTo(BI_MIN_VALUE)<0 || value.compareTo(BI_MAX_VALUE)>0) throw new IllegalArgumentException("Argument is not within range");		
+			this.value = value.compareTo(HALF)<0 ? value.longValue() : value.subtract(HALF).longValue() | 0x80000000l;
+	    }	    
+	    
+	}
+	
+	public final static class Immutable extends UnsignedLong {
+		
+		private static final long serialVersionUID = 1L;
+
+		Immutable() {}
+		
+		public Immutable(int value) throws IllegalArgumentException {
+	    	if ( value<L_MIN_VALUE ) throw new IllegalArgumentException("Argument is not within range");
+	        this.value = value;
+	    }
+
+	    public Immutable(long value) throws IllegalArgumentException {
+	    	if ( value<L_MIN_VALUE ) throw new IllegalArgumentException("Argument is not within range");
+	        this.value = (int) value;
+	    }
+
+	    public Immutable(BigInteger value) throws IllegalArgumentException {
+			if (value.compareTo(BI_MIN_VALUE)<0 || value.compareTo(BI_MAX_VALUE)>0) throw new IllegalArgumentException("Argument is not within range");		
+			this.value = value.compareTo(HALF)<0 ? value.longValue() : value.subtract(HALF).longValue() | 0x80000000l;
+		}
+	    
+	    public Immutable(String stringValue) throws IllegalArgumentException {
+	        long value = Long.parseLong(stringValue);
+	    	if ( value<L_MIN_VALUE ) throw new IllegalArgumentException("Argument is not within range");
+	        this.value = (int) value;
+	    }	
+	    
+	}	
+	
+    public long toBits() {
+    	return value;
+    }
+	
+	@Override
+	public int intValue() {
+		return (int) value;
+	}
+	
+	@Override
+	public long longValue() {
+		return value;
+	}
+	
+	@Override
+	public float floatValue() {
+		return value;
+	}
+	@Override
+	public double doubleValue() {
+		return value;
+	}
+	
+	/**
+	 * Create big integer value
+	 * 
+	 * @return new big integer
+	 */
+	public BigInteger toBigInteger() {
+		return value>=0 ? BigInteger.valueOf(value) : BigInteger.valueOf(value & 0x7fffffff).add(HALF); 
+	}	
+	
+    @Override
+	public boolean equals(Object obj) {
+		if (obj == null) return false;
+		if (obj == this) return true;
+		
+		if (obj instanceof UnsignedLong == false) return false;
+		UnsignedLong other = (UnsignedLong) obj;
+		return value == other.value;
+	}
+    
+    @Override
+    public String toString() {
+    	return value>=0 ? Long.toString(value) : toBigInteger().toString();
+    }
+    
+	@Override
+	public int compareTo(Number obj) {
+		return value>=0 ? Long.signum( value - obj.longValue() ) : 1;
+	}
+	
+	@Override
+	public int hashCode() {
+	    return (int)value | (int)(value>>32);
+	}
+
+	// Initialize Cache
+	private static int CACHE_SIZE = 16;
+	private static UnsignedLong.Immutable[] CACHE;
+	static {
+		CACHE = new UnsignedLong.Immutable[CACHE_SIZE];
+		for (int i=0; i<CACHE_SIZE; i++) CACHE[i] = new UnsignedLong.Immutable(i);
+		ZERO = MIN_VALUE = CACHE[0];
+		MAX_VALUE = UnsignedLong.fromBits(0xFFFFFFFF);
+	}
+
+}