public static double RandomDouble(IRandomGenExtended rand, int exponent)
{
if (exponent == Int32.MaxValue)
{
if (rand == null)
{
throw new ArgumentNullException(nameof(rand));
}
exponent = rand.GetInt32(2047);
}
if (rand == null)
{
throw new ArgumentNullException(nameof(rand));
}
long r = rand.GetInt32(0x10000);
r |= ((long)rand.GetInt32(0x10000)) << 16;
if (rand.GetInt32(2) == 0)
{
r |= ((long)rand.GetInt32(0x10000)) << 32;
if (rand.GetInt32(2) == 0)
{
r |= ((long)rand.GetInt32(0x10000)) << 48;
}
}
r &= ~0x7ff0000000000000L; // clear exponent
r |= ((long)exponent) << 52; // set exponent
return(BitConverter.ToDouble(BitConverter.GetBytes((long)r), 0));
}
public static EFloat RandomEFloat(IRandomGenExtended r)
{
if (r == null)
{
throw new ArgumentNullException(nameof(r));
}
if (r.GetInt32(100) == 0)
{
int x = r.GetInt32(3);
if (x == 0)
{
return(EFloat.PositiveInfinity);
}
if (x == 1)
{
return(EFloat.NegativeInfinity);
}
if (x == 2)
{
return(EFloat.NaN);
}
}
if (r.GetInt32(100) == 3)
{
return(CloseToPowerOfTwo(r));
}
return(EFloat.Create(
RandomEInteger(r),
(EInteger)(r.GetInt32(400) - 200)));
}
private static void AppendRandomDecimals(
IRandomGenExtended r,
StringBuilder sb,
int smallCount)
{
AppendRandomDecimalsLong(r, sb, smallCount);
}
public static EInteger RandomEInteger(IRandomGenExtended r)
{
if (r == null)
{
throw new ArgumentNullException(nameof(r));
}
int selection = r.GetInt32(100);
if (selection < 10)
{
int count = r.GetInt32(MaxNumberLength);
count = (int)(((long)count * r.GetInt32(MaxNumberLength)) /
MaxNumberLength);
count = (int)(((long)count * r.GetInt32(MaxNumberLength)) /
MaxNumberLength);
count = Math.Max(count, 1);
if (selection == 0 || selection == 1)
{
return(BitHeavyEInteger(r, count));
}
else if ((selection == 2 || selection == 3) && count < 500)
{
return(DigitHeavyEInteger(r, count));
}
byte[] bytes = RandomByteString(r, count);
return(EInteger.FromBytes(bytes, true));
}
else
{
byte[] bytes = RandomByteString(
r,
r.GetInt32(MaxShortNumberLength) + 1);
return(EInteger.FromBytes(bytes, true));
}
}
public static string RandomDecimalStringShort(IRandomGenExtended
wrapper, bool extended)
{
var sb = new StringBuilder();
if (wrapper == null)
{
throw new ArgumentNullException(nameof(wrapper));
}
int len = 1 + wrapper.GetInt32(4);
if (!extended)
{
sb.Append((char)('1' + wrapper.GetInt32(9)));
--len;
}
AppendRandomDecimals(wrapper, sb, len);
sb.Append('.');
len = 1 + wrapper.GetInt32(36);
AppendRandomDecimals(wrapper, sb, len);
sb.Append('E');
len = wrapper.GetInt32(25) - 12;
sb.Append(TestCommon.IntToString(len));
return(sb.ToString());
}
private static int GenerateUtf8(
IRandomGenExtended ra,
ByteWriter bs,
StringBuilder sb,
int len)
{
int r = ra.GetInt32(3);
int r2, r3, r4;
if (r == 0 && len >= 2)
{
r = 0xc2 + ra.GetInt32((0xdf - 0xc2) + 1);
bs.Write(r);
r2 = 0x80 + ra.GetInt32(0x40);
bs.Write(r2);
if (sb != null)
{
sb.Append((char)(((r - 0x80) << 6) | r2));
}
return(2);
}
else if (r == 1 && len >= 3)
{
r = 0xe0 + ra.GetInt32(16);
bs.Write(r);
int lower = (r == 0xe0) ? 0xa0 : 0x80;
int upper = (r == 0xed) ? 0x9f : 0xbf;
r2 = lower + ra.GetInt32((upper - lower) + 1);
bs.Write(r2);
r3 = 0x80 + ra.GetInt32(0x40);
bs.Write(r3);
if (sb != null)
{
sb.Append((char)(((r - 0x80) << 12) | ((r2 - 0x80) << 6) | r3));
}
return(3);
}
else if (r == 2 && len >= 4)
{
r = 0xf0 + ra.GetInt32(5);
bs.Write(r);
int lower = (r == 0xf0) ? 0x90 : 0x80;
int upper = (r == 0xf4) ? 0x8f : 0xbf;
r2 = lower + ra.GetInt32((upper - lower) + 1);
bs.Write(r2);
r3 = 0x80 + ra.GetInt32(0x40);
bs.Write(r3);
r4 = 0x80 + ra.GetInt32(0x40);
bs.Write(r4);
r = ((r - 0x80) << 18) | ((r2 - 0x80) << 12) | ((r3 - 0x80) << 6) | r4;
if (sb != null)
{
sb.Append((char)(((r - 0x10000) >> 10) | 0xd800));
sb.Append((char)(((r - 0x10000) & 0x3ff) | 0xdc00));
}
return(4);
}
return(0);
}
private static void GenerateArgument(
IRandomGenExtended r,
int majorType,
int len,
ByteWriter bs)
{
var maxArg = 4;
var sh = 0;
int minArg = (len < 0x18) ? 0 : ((len <= 0xff) ? 1 :
((len <= 0xffff) ? 2 : 3));
int arg = minArg + r.GetInt32(maxArg - minArg + 1);
switch (arg)
{
case 0:
bs.Write((majorType * 0x20) + len);
break;
case 1:
bs.Write((majorType * 0x20) + 0x18);
bs.Write(len & 0xff);
break;
case 2:
bs.Write((majorType * 0x20) + 0x19);
sh = 8;
for (int i = 0; i < 2; ++i)
{
bs.Write((len >> sh) & 0xff);
sh -= 8;
}
break;
case 3:
bs.Write((majorType * 0x20) + 0x1a);
sh = 24;
for (int i = 0; i < 4; ++i)
{
bs.Write((len >> sh) & 0xff);
sh -= 8;
}
break;
case 4:
bs.Write((majorType * 0x20) + 0x1b);
for (int i = 0; i < 4; ++i)
{
bs.Write(0);
}
sh = 24;
for (int i = 0; i < 4; ++i)
{
bs.Write((len >> sh) & 0xff);
sh -= 8;
}
break;
}
}
public static byte[] RandomByteStringShort(IRandomGenExtended rand)
{
if (rand == null)
{
throw new ArgumentNullException(nameof(rand));
}
return(RandomByteString(
rand,
rand.GetInt32(MaxExclusiveShortStringLength)));
}
public static int RandomInt32(IRandomGenExtended rand)
{
byte[] bytes = RandomByteString(rand, 4);
int ret = ((int)bytes[0]) & 0xff;
ret |= (((int)bytes[1]) & 0xff) << 8;
ret |= (((int)bytes[2]) & 0xff) << 16;
ret |= (((int)bytes[3]) & 0xff) << 24;
return(ret);
}
public static EInteger RandomEIntegerMajorType0(IRandomGenExtended rand)
{
int v = rand.GetInt32(0x10000);
EInteger ei = EInteger.FromInt32(v);
ei = ei.ShiftLeft(16).Add(rand.GetInt32(0x10000));
ei = ei.ShiftLeft(16).Add(rand.GetInt32(0x10000));
ei = ei.ShiftLeft(16).Add(rand.GetInt32(0x10000));
return(ei);
}
public static double RandomFiniteDouble(IRandomGenExtended rand)
{
long r = 0;
do
{
r = RandomInt64(rand);
} while (((r >> 52) & 0x7ff) == 0x7ff);
return(BitConverter.ToDouble(BitConverter.GetBytes((long)r), 0));
}
public static ERational RandomERational(IRandomGenExtended rand)
{
EInteger bigintA = RandomEInteger(rand);
EInteger bigintB = RandomEInteger(rand);
if (bigintB.IsZero)
{
bigintB = EInteger.One;
}
return(ERational.Create(bigintA, bigintB));
}
public static EInteger RandomEIntegerSmall(IRandomGenExtended r)
{
if (r == null)
{
throw new ArgumentNullException(nameof(r));
}
byte[] bytes = RandomByteString(
r,
r.GetInt32(MaxShortNumberLength) + 1);
return(EInteger.FromBytes(bytes, true));
}
private static void AppendRandomDecimalsLong(
IRandomGenExtended r,
StringBuilder sb,
long count)
{
if (sb == null)
{
throw new ArgumentNullException(nameof(sb));
}
if (r == null)
{
throw new ArgumentNullException(nameof(r));
}
if (count > 0)
{
var buflen = (int)Math.Min(0x10000, Math.Max(count + 8, 64));
var buffer = new byte[buflen];
while (count > 0)
{
r.GetBytes(buffer, 0, buflen);
var i = 0;
while (i < buflen && count > 0)
{
int x = ((int)buffer[i]) & 31;
if (x < 30)
{
sb.Append(charTable[x]);
--count;
++i;
}
else if (count >= 40 && i + 1 < buflen)
{
int y = (((int)buffer[i + 1]) & 0xff) %
valueSpecialDecimals2.Length;
sb.Append(valueSpecialDecimals2[y]);
count -= 40;
i += 2;
}
else if (count >= 10 && i + 1 < buflen)
{
int y = (((int)buffer[i + 1]) & 0xff) %
valueSpecialDecimals.Length;
sb.Append(valueSpecialDecimals[y]);
count -= 10;
i += 2;
}
else
{
++i;
}
}
}
}
}
public static byte[] RandomByteString(IRandomGenExtended rand, int length)
{
if (rand == null)
{
throw new ArgumentNullException(nameof(rand));
}
var bytes = new byte[length];
rand.GetBytes(bytes, 0, bytes.Length);
return(bytes);
}
public byte[] Generate(IRandomGenExtended random)
{
var bs = new ByteWriter();
if (random == null)
{
throw new ArgumentNullException(nameof(random));
}
this.Generate(random, 0, bs);
byte[] ret = bs.ToBytes();
return(ret);
}
public static byte[] RandomByteString(IRandomGenExtended rand)
{
if (rand == null)
{
throw new ArgumentNullException(nameof(rand));
}
int x = rand.GetInt32(MaxExclusiveStringLength);
var bytes = new byte[x];
rand.GetBytes(bytes, 0, bytes.Length);
return(bytes);
}
private static void GenerateJsonString(
IRandomGenExtended ra,
ByteWriter bs,
int depth)
{
int len = ra.GetInt32(1000) * ra.GetInt32(1000);
len /= 1000;
if (ra.GetInt32(50) == 0 && depth < 2)
{
// Exponential curve that strongly favors small numbers
var v = (long)ra.GetInt32(1000000) * ra.GetInt32(1000000);
len = (int)(v / 1000000);
}
bs.Write(0x22);
for (int i = 0; i < len;)
{
int r = ra.GetInt32(10);
if (r > 2)
{
int x = 0x20 + ra.GetInt32(60);
if (x == (int)'\"')
{
bs.Write((int)'\\').Write(x);
}
else if (x == (int)'\\')
{
bs.Write((int)'\\').Write(x);
}
else
{
bs.Write(x);
}
++i;
}
else if (r == 1)
{
bs.Write((int)'\\');
int esc = valueEscapes[ra.GetInt32(valueEscapes.Length)];
bs.Write((int)esc);
if (esc == (int)'u')
{
GenerateUtf16(ra, bs, null);
}
}
else
{
GenerateUtf8(ra, bs, null, len - i);
}
}
bs.Write(0x22);
}
private static EDecimal RandomEDecimalLowExponent(IRandomGenExtended rand)
{
while (true)
{
EDecimal ef = RandomObjects.RandomEDecimal(rand);
if (
ef.Exponent.CompareTo(-20000) >= 0 &&
ef.Exponent.CompareTo(20000) <= 0)
{
return(ef);
}
}
}
public static CBORObject RandomCBORArray(IRandomGenExtended rand, int
depth)
{
int x = rand.GetInt32(100);
int count = (x < 80) ? 2 : ((x < 93) ? 1 : ((x < 98) ? 0 : 10));
CBORObject cborRet = CBORObject.NewArray();
for (var i = 0; i < count; ++i)
{
cborRet.Add(RandomCBORObject(rand, depth + 1));
}
return(cborRet);
}
public static CBORObject RandomCBORMap(IRandomGenExtended rand, int depth)
{
int x = rand.GetInt32(100);
int count = (x < 80) ? 2 : ((x < 93) ? 1 : ((x < 98) ? 0 : 10));
CBORObject cborRet = CBORObject.NewMap();
for (var i = 0; i < count; ++i)
{
CBORObject key = RandomCBORObject(rand, depth + 1);
CBORObject value = RandomCBORObject(rand, depth + 1);
cborRet[key] = value;
}
return(cborRet);
}
public static long RandomInt64(IRandomGenExtended rand)
{
byte[] bytes = RandomByteString(rand, 8);
long ret = ((long)bytes[0]) & 0xff;
ret |= (((long)bytes[1]) & 0xff) << 8;
ret |= (((long)bytes[2]) & 0xff) << 16;
ret |= (((long)bytes[3]) & 0xff) << 24;
ret |= (((long)bytes[4]) & 0xff) << 32;
ret |= (((long)bytes[5]) & 0xff) << 40;
ret |= (((long)bytes[6]) & 0xff) << 48;
ret |= (((long)bytes[7]) & 0xff) << 56;
return(ret);
}
private static void GenerateJsonNumber(IRandomGenExtended ra, ByteWriter
bs)
{
if (ra.GetInt32(2) == 0)
{
bs.Write((int)'-');
}
int len = ((ra.GetInt32(2000) * ra.GetInt32(2000)) / 2000) + 1;
bs.Write(0x31 + ra.GetInt32(9));
for (int i = 0; i < len; ++i)
{
bs.Write(0x30 + ra.GetInt32(10));
}
if (ra.GetInt32(2) == 0)
{
bs.Write(0x2e);
len = ((ra.GetInt32(2000) * ra.GetInt32(2000)) / 2000) + 1;
for (int i = 0; i < len; ++i)
{
bs.Write(0x30 + ra.GetInt32(10));
}
}
if (ra.GetInt32(2) == 0)
{
int rr = ra.GetInt32(3);
if (rr == 0)
{
bs.Write((int)'E');
}
else if (rr == 1)
{
bs.Write((int)'E').Write((int)'+');
}
else if (rr == 2)
{
bs.Write((int)'E').Write((int)'-');
}
len = 1 + ra.GetInt32(5);
if (ra.GetInt32(10) == 0)
{
len = 1 + ((ra.GetInt32(2000) * ra.GetInt32(2000)) / 2000);
}
for (int i = 0; i < len; ++i)
{
bs.Write(0x30 + ra.GetInt32(10));
}
}
}
public static EInteger RandomEIntegerMajorType0Or1(IRandomGenExtended
rand)
{
int v = rand.GetInt32(0x10000);
EInteger ei = EInteger.FromInt32(v);
ei = ei.ShiftLeft(16).Add(rand.GetInt32(0x10000));
ei = ei.ShiftLeft(16).Add(rand.GetInt32(0x10000));
ei = ei.ShiftLeft(16).Add(rand.GetInt32(0x10000));
if (rand.GetInt32(2) == 0)
{
ei = ei.Add(1).Negate();
}
return(ei);
}
public static EDecimal GenerateEDecimalSmall(IRandomGenExtended wrapper)
{
if (wrapper == null)
{
throw new ArgumentNullException(nameof(wrapper));
}
if (wrapper.GetInt32(2) == 0)
{
EInteger eix = EInteger.FromBytes(
RandomByteString(wrapper, 1 + wrapper.GetInt32(36)),
true);
int exp = wrapper.GetInt32(25) - 12;
return(EDecimal.Create(eix, exp));
}
return(EDecimal.FromString(RandomDecimalStringShort(wrapper, false)));
}
private static void GenerateUtf8(IRandomGenExtended ra, ByteWriter bs, int
length)
{
for (int i = 0; i < length;)
{
int r = ra.GetInt32(10);
if (r > 0)
{
bs.Write(ra.GetInt32(128));
++i;
}
else
{
r = ra.GetInt32(3);
if (r == 0 && length - i >= 2)
{
r = 0xc2 + ra.GetInt32((0xdf - 0xc2) + 1);
bs.Write(r);
bs.Write(0x80 + ra.GetInt32(0x40));
i += 2;
}
else if (r == 1 && length - i >= 3)
{
r = 0xe0 + ra.GetInt32(16);
bs.Write(r);
int lower = (r == 0xe0) ? 0xa0 : 0x80;
int upper = (r == 0xed) ? 0x9f : 0xbf;
r = lower + ra.GetInt32((upper - lower) + 1);
bs.Write(r);
bs.Write(0x80 + ra.GetInt32(0x40));
i += 3;
}
else if (r == 2 && length - i >= 4)
{
r = 0xf0 + ra.GetInt32(5);
bs.Write(r);
int lower = (r == 0xf0) ? 0x90 : 0x80;
int upper = (r == 0xf4) ? 0x8f : 0xbf;
r = lower + ra.GetInt32((upper - lower) + 1);
bs.Write(r);
bs.Write(0x80 + ra.GetInt32(0x40));
bs.Write(0x80 + ra.GetInt32(0x40));
i += 4;
}
}
}
}
private static EInteger BitHeavyEInteger(IRandomGenExtended rg, int count)
{
var sb = new StringBuilder();
int[] oneChances =
{
999, 1, 980, 20, 750, 250, 980,
20, 980, 20, 980, 20, 750, 250,
};
int oneChance = oneChances[rg.GetInt32(oneChances.Length)];
for (var i = 0; i < count; ++i)
{
sb.Append((rg.GetInt32(1000) >= oneChance) ? '0' : '1');
}
return(EInteger.FromRadixString(sb.ToString(), 2));
}
private static int[] RandomLesserFields(IRandomGenExtended irg, EInteger
year)
{
int month = irg.GetInt32(12) + 1;
int days = IsLeapYear(year) ? ValueLeapDays[month] :
ValueNormalDays[month];
return(new int[] {
month,
irg.GetInt32(days) + 1,
irg.GetInt32(24),
irg.GetInt32(60),
irg.GetInt32(60),
irg.GetInt32(1000000000),
0,
});
}
private static void GenerateWhitespace(
IRandomGenExtended ra,
ByteWriter bs)
{
if (ra.GetInt32(10) == 0)
{
int len = ra.GetInt32(20);
int[] ws = { 0x09, 0x0d, 0x0a, 0x20 };
if (ra.GetInt32(100) == 0)
{
len = ra.GetInt32(100);
}
for (int i = 0; i < len; ++i)
{
bs.Write(ws[ra.GetInt32(ws.Length)]);
}
}
}
public static EInteger RandomSmallIntegral(IRandomGenExtended r)
{
if (r == null)
{
throw new ArgumentNullException(nameof(r));
}
int count = r.GetInt32(MaxShortNumberLength / 2) + 1;
var sb = new StringBuilder();
if (r.GetInt32(2) == 0)
{
sb.Append('-');
}
sb.Append((char)('1' + r.GetInt32(9)));
--count;
AppendRandomDecimals(r, sb, count);
return(EInteger.FromString(sb.ToString()));
}
