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