public IDGenerator(String key, IRangeGenerator <T> rangeGenerator)
{
this.key = key.ToUpperInvariant();
this.rangeGenerator = rangeGenerator;
this.startRange = default(T);
this.endRange = default(T);
}
public static IIDGenerator <T> Create(string key, IRangeGenerator <T> rg)
{
IIDGenerator <T> idGen = null;
if (false == idGenerators.TryGetValue(key, out idGen))
{
switch (typeof(T).FullName)
{
case "System.Int64":
{
idGen = (IIDGenerator <T>) new Int64IDGenertor(key, (IRangeGenerator <Int64>)rg);
break;
}
case "System.Int32":
{
idGen = (IIDGenerator <T>) new Int32IDGenertor(key, (IRangeGenerator <Int32>)rg);
break;
}
case "System.Int16":
{
idGen = (IIDGenerator <T>) new Int16IDGenertor(key, (IRangeGenerator <Int16>)rg);
break;
}
}
if (!idGenerators.TryAdd(key, idGen))
{
throw new Exception("Cannot create ID Generator.");
}
}
return(idGen);
}
/// <summary>
/// Fills a portion of a provided character buffer with random characters using the provided character set.
/// </summary>
/// <param name="random">The pseudo-random engine that will be used to generate bits from which the return value is derived.</param>
/// <param name="buffer">The character buffer to which random charactors will be written.</param>
/// <param name="start">The start index of the character buffer where random character generation will begin. Must be less than or equal to <paramref name="buffer"/>.Length - <paramref name="length"/>.</param>
/// <param name="length">The number of random characters to be generated. Must be less than or equal to <c><paramref name="buffer"/>.Length - <paramref name="start"/></c>.</param>
/// <param name="characters">The allowable characters to select from when generating the string.</param>
/// <seealso cref="Characters(IRandom, char[], int, int, char[], char, float, bool, bool, bool)"/>
/// <seealso cref="String(IRandom, int, char[])"/>
public static void Characters(this IRandom random, char[] buffer, int start, int length, char[] characters)
{
if (length <= 0)
{
return;
}
int end = start + length;
IRangeGenerator <int> generator = random.MakeRangeCOGenerator(characters.Length);
for (int i = start; i < end; ++i)
{
buffer[i] = characters[generator.Next()];
}
}
private static string Base64String(this IRandom random, int length, char[] characters)
{
if (length <= 0)
{
return("");
}
char[] buffer = new char[length];
IRangeGenerator <int> generator = random.MakeRangeCOGenerator(64);
for (int i = 0; i < length; ++i)
{
buffer[i] = characters[generator.Next()];
}
return(new string(buffer));
}
/// <summary>
/// Generates a random string representing a sequence of decimal digits.
/// </summary>
/// <param name="random">The pseudo-random engine that will be used to generate bits from which the return value is derived.</param>
/// <param name="length">The length of the string to be generated.</param>
/// <returns>A random string, with each character being a uniformly random selection decimal digits { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }.</returns>
public static string DecimalString(this IRandom random, int length)
{
if (length <= 0)
{
return("");
}
char[] buffer = new char[length];
IRangeGenerator <int> generator = random.MakeRangeCOGenerator(10);
for (int i = 0; i < length; ++i)
{
buffer[i] = (char)('0' + generator.Next());
}
return(new string(buffer));
}
/// <summary>
/// Generates a random string representing a sequence of decimal digits.
/// </summary>
/// <param name="random">The pseudo-random engine that will be used to generate bits from which the return value is derived.</param>
/// <param name="length">The length of the string to be generated.</param>
/// <returns>A random string, with each character being a uniformly random selection decimal digits { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F }.</returns>
/// <remarks>Upper case letters are used for the digits A through F. If you want to control
/// the letter casing used, see <see cref="HexadecimalString(IRandom, int, Casing)"/>.</remarks>
/// <seealso cref="Casing"/>
/// <seealso cref="HexadecimalString(IRandom, int, Casing)"/>
public static string HexadecimalString(this IRandom random, int length)
{
if (length <= 0)
{
return("");
}
char[] buffer = new char[length];
IRangeGenerator <int> generator = random.MakeRangeCOGenerator(16);
for (int i = 0; i < length; ++i)
{
buffer[i] = _upperHexadecimalCharacters[generator.Next()];
}
return(new string(buffer));
}
/// <summary>
/// Fills a portion of a provided character buffer with random characters using the provided character set.
/// </summary>
/// <param name="random">The pseudo-random engine that will be used to generate bits from which the return value is derived.</param>
/// <param name="buffer">The character buffer to which random charactors will be written.</param>
/// <param name="start">The start index of the character buffer where random character generation will begin. Must be less than or equal to <paramref name="buffer"/>.Length - <paramref name="length"/>.</param>
/// <param name="length">The number of random characters to be generated. Must be less than or equal to <c><paramref name="buffer"/>.Length - <paramref name="start"/></c>.</param>
/// <param name="characters">The allowable characters to select from when generating the string.</param>
/// <param name="separator">The separator character to be randomly inserted into the string according to the probability specified.</param>
/// <param name="separatorProbability">The probability of any specific index in the string being a separator character. Must be in the range [0, 1].</param>
/// <param name="allowSeparatorAtEnd">Whether or not the last character to be generated is allowed to be a separator character.</param>
/// <param name="allowSeparatorAtBegin">Whether or not the first character to be generated is allowed to be a separator character.</param>
/// <param name="forceSeparatorAtBegin">Whether or not the first character to be generated must be a separator character. Ignored if <paramref name="allowSeparatorAtBegin"/> is false.</param>
/// <remarks><para>It is guaranteed that two separator characters will never be generated one immediately after the other within the
/// character sequence, regardless of the separator probability.</para>
/// <para>A separator probability of 0 will guarantee that there are no separators at all, while a probability of 1 will guarantee
/// that every second character is a separtor character. Probabilities less than 1 but greater that 0.5 will be biased toward the
/// same every-other character outcome, but will have a chance of generating longer sequences of non-separator characters, rather than
/// being strictly limited to one non-separator character at a time.</para></remarks>
/// <seealso cref="Characters(IRandom, char[], int, int, char[])"/>
/// <seealso cref="String(IRandom, int, char[], char, float, bool, bool, bool)"/>
public static void Characters(this IRandom random, char[] buffer, int start, int length, char[] characters, char separator, float separatorProbability, bool allowSeparatorAtEnd = false, bool allowSeparatorAtBegin = false, bool forceSeparatorAtBegin = false)
{
if (length <= 0)
{
return;
}
bool allowSeparatorState = allowSeparatorAtBegin;
bool forceSeparatorState = forceSeparatorAtBegin;
int end = start + length;
IRangeGenerator <int> generator = random.MakeRangeCOGenerator(characters.Length);
for (int i = start; i < end; ++i)
{
if (allowSeparatorState && (allowSeparatorAtEnd || i + 1 < end))
{
if (forceSeparatorState || random.Probability(separatorProbability))
{
buffer[i] = separator;
allowSeparatorState = false;
forceSeparatorState = false;
}
else
{
buffer[i] = characters[generator.Next()];
}
}
else
{
buffer[i] = characters[generator.Next()];
allowSeparatorState = true;
forceSeparatorState = random.Probability(separatorProbability);
}
}
}
public UIntWeightedProbabilityGenerator(IRandom random, uint numerator, uint denominator)
{
_rangeGenerator = random.MakeRangeCOGenerator(denominator);
_numerator = numerator;
}
public Int32IDGenertor(String key, IRangeGenerator <Int32> rangeGenerator)
: base(key, rangeGenerator)
{
this.SetRange();
}
public ULongWeightedProbabilityGenerator(IRandom random, ulong numerator)
{
_rangeGenerator = random.MakeULongGenerator();
_numerator = numerator;
}
public ULongWeightedProbabilityGenerator(IRandom random, ulong numerator, ulong denominator)
{
_rangeGenerator = random.MakeRangeCOGenerator(denominator);
_numerator = numerator;
}
public UIntWeightedProbabilityGenerator(IRandom random, uint numerator)
{
_rangeGenerator = random.MakeUIntGenerator();
_numerator = numerator;
}
public Int64IDGenertor(String key, IRangeGenerator <Int64> rangeGenerator)
: base(key, rangeGenerator)
{
}
public IntWeightedProbabilityGenerator(IRandom random, int numerator)
{
_rangeGenerator = random.MakeIntGenerator(true);
_numerator = numerator;
}
public DoubleWeightedProbabilityGenerator(IRandom random, double numerator, double denominator)
{
_rangeGenerator = random.MakeRangeCOGenerator(denominator);
_numerator = numerator;
}
public DoubleWeightedProbabilityGenerator(IRandom random, double numerator)
{
_rangeGenerator = random.MakeDoubleCOGenerator();
_numerator = numerator;
}
public FloatWeightedProbabilityGenerator(IRandom random, float numerator, float denominator)
{
_rangeGenerator = random.MakeRangeCOGenerator(denominator);
_numerator = numerator;
}
public FloatWeightedProbabilityGenerator(IRandom random, float numerator)
{
_rangeGenerator = random.MakeFloatCOGenerator();
_numerator = numerator;
}
private AngleGenerator(IRangeGenerator <float> rangeGenerator, float scale)
{
_rangeGenerator = rangeGenerator;
_scale = scale;
}
public LongWeightedProbabilityGenerator(IRandom random, long numerator)
{
_rangeGenerator = random.MakeLongGenerator(true);
_numerator = numerator;
}