public Number(BigInteger numerator, BigInteger denominator)
{
if (denominator == BigInteger.Zero)
{
numerator = 0;
denominator = 0;
State = NumberState.NaN;
}
BigInteger num = NumberAlgorithms.Gcd(numerator, denominator);
if (num == BigInteger.Zero)
{
State = NumberState.PositiveInfinity;
}
else if (denominator < BigInteger.Zero)
{
Numerator = -numerator / num;
Denominator = -denominator / num;
}
else
{
Numerator = numerator / num;
Denominator = denominator / num;
}
}
public static Number Create(byte[] bytes, int scale, NumberState state)
{
if (state == NumberState.None)
{
// This inlines common numbers to save a bit of memory.
if (scale == 0 && bytes.Length == 1)
{
if (bytes[0] == 0)
{
return(Zero);
}
if (bytes[0] == 1)
{
return(One);
}
}
return(new Number(bytes, scale, state));
}
if (state == NumberState.NegativeInfinity)
{
return(NegativeInfinity);
}
if (state == NumberState.PositiveInfinity)
{
return(PositiveInfinity);
}
if (state == NumberState.NotANumber)
{
return(NaN);
}
throw new ApplicationException("Unknown number state.");
}
internal Number(NumberState numberState, BigDecimal bigDecimal)
{
this.numberState = numberState;
if (numberState == NumberState.None)
{
SetBigDecimal(bigDecimal);
}
}
private Number(byte[] buf, int scale, NumberState state)
{
numberState = state;
if (numberState == NumberState.None)
{
BigInteger bigint = new BigInteger(buf);
SetBigDecimal(new BigDecimal(bigint, scale));
}
}
public Lexer()
{
EmptyState = new EmptyState(this);
NumberState = new NumberState(this);
OperatorState = new OperatorState(this);
CurrentState = EmptyState;
}
/// <summary>
/// Constructor.
/// Set event handlers and creates the label for viewing the Number.
/// </summary>
/// <param name="val">Value for the number</param>
public Number(int val)
{
OnRemove += BlankRemove;
StopEventColumn += EmptyStopHandler;
StopEventRow += EmptyStopHandler;
value = val;
Display = new Label();
Display.AutoSize = true;
Display.Text = this.ToString();
currentState = NumberState.stopped;
}
public PrimalityTestChoose(NumberState numberState, BigInteger number)
{
InitializeComponent();
_number = number;
_token = new CancellationTokenSource();
_options = new Options();
Init(numberState);
DataContext = _options;
TestButton.Click += TestButton_Click;
}
public IToken Next(IScanner scanner)
{
var state = new NumberState(scanner);
var current = scanner.Current;
if (current == CharacterTable.FullStop)
{
return(state.Dot());
}
else if (current == CharacterTable.Zero)
{
return(state.Zero());
}
return(state.Digit());
}
private void setNewState(char character)
{
switch (character)
{
case '.':
state = NumberState.DECIMAL_PART;
break;
case 'e':
case 'E':
state = NumberState.E_PART;
break;
default:
break;
}
}
private void Init(NumberState numberState)
{
switch (numberState)
{
case NumberState.Fermat:
{
PepinRadio.IsEnabled = true;
LucasLehmerRadio.IsEnabled = false;
PepinText.Text += "(recommend)";
_options.Type = PrimalityTestType.Pepin;
}
break;
case NumberState.Mersenne:
{
PepinRadio.IsEnabled = false;
LucasLehmerRadio.IsEnabled = true;
LucasLehmerText.Text += "(recommend)";
_options.Type = PrimalityTestType.LucasLehmer;
}
break;
case NumberState.Proth:
{
PepinRadio.IsEnabled = false;
LucasLehmerRadio.IsEnabled = false;
MessageBox.Show("This number is a Proth number, " +
"so best best primality test for you is Proth test.",
"Result", MessageBoxButton.OK);
}
break;
case NumberState.None:
PepinRadio.IsEnabled = false;
LucasLehmerRadio.IsEnabled = false;
break;
default:
throw new ArgumentOutOfRangeException(nameof(numberState), numberState, null);
}
}
public NumberParser(NumberState state)
{
_state = state;
switch (state)
{
case NumberState.IsZero:
NextChar(StructuralChar.DecimalSeparator, () => new NumberParser(NumberState.ReadyForFraction));
NextChar(StructuralChar.ScientificNotationSeparator, () => new NumberParser(NumberState.ReadyForExponentStart));
break;
case NumberState.ReadyForFirstDigit:
NextChar(StructuralChar.LeadingIntegerDigit, () => new NumberParser(NumberState.SecondaryDigit));
NextChar(StructuralChar.OnlyZero, () => new NumberParser(NumberState.IsZero));
break;
case NumberState.SecondaryDigit:
NextChar(StructuralChar.FollowingIntegerDigit, () => new NumberParser(NumberState.SecondaryDigit));
NextChar(StructuralChar.DecimalSeparator, () => new NumberParser(NumberState.ReadyForFraction));
NextChar(StructuralChar.ScientificNotationSeparator, () => new NumberParser(NumberState.ReadyForExponentStart));
break;
case NumberState.ReadyForFraction:
NextChar(StructuralChar.FollowingIntegerDigit, () => new NumberParser(NumberState.ReadyToContinueFraction));
break;
case NumberState.ReadyToContinueFraction:
NextChar(StructuralChar.FollowingIntegerDigit, () => new NumberParser(NumberState.ReadyToContinueFraction));
NextChar(StructuralChar.ScientificNotationSeparator, () => new NumberParser(NumberState.ReadyForExponentStart));
break;
case NumberState.ReadyForExponentStart:
NextChar(StructuralChar.FollowingIntegerDigit, () => new NumberParser(NumberState.ReadyToContinueExponent));
break;
case NumberState.ReadyToContinueExponent:
NextChar(StructuralChar.FollowingIntegerDigit, () => new NumberParser(NumberState.ReadyToContinueExponent));
break;
default:
throw new ArgumentOutOfRangeException(nameof(state), state, null);
}
}
public NumberValidityChecker(string input)
{
this.index = 0;
this.input = input;
this.state = NumberState.INTEGER_PART;
this.valid = false;
this.automataState = 0;
this.errorMessage = string.Empty;
this.decimalPart = 0;
this.integerPart = 0;
this.ePart = 0;
this.value = -1;
this.negativeInteger = false;
this.negativeE = false;
valid = checkString();
if (valid)
{
value = setValue();
}
}
protected override object CastObjectTo(object value, DataType destType)
{
var n = (Number)value;
var sqlType = destType.SqlType;
switch (sqlType)
{
case (SqlType.Bit):
case (SqlType.Boolean):
return(n.ToBoolean());
case (SqlType.TinyInt):
case (SqlType.SmallInt):
case (SqlType.Integer):
return((Number)n.ToInt32());
case (SqlType.BigInt):
return((Number)n.ToInt64());
case (SqlType.Float):
case (SqlType.Real):
case (SqlType.Double):
double d = n.ToDouble();
NumberState state = NumberState.None;
if (Double.IsNaN(d))
{
state = NumberState.NotANumber;
}
else if (Double.IsPositiveInfinity(d))
{
state = NumberState.PositiveInfinity;
}
else if (Double.IsNegativeInfinity(d))
{
state = NumberState.NegativeInfinity;
}
return(new Number(state, new BigDecimal(d)));
case (SqlType.Numeric):
// fall through
case (SqlType.Decimal):
return(Number.Parse(n.ToString()));
case (SqlType.Char):
return(new StringObject(CastUtil.PaddedString(n.ToString(), ((StringType)destType).MaxSize)));
case (SqlType.VarChar):
case (SqlType.LongVarChar):
return(new StringObject(n.ToString()));
case (SqlType.Date):
case (SqlType.Time):
case (SqlType.TimeStamp):
return(ToDate(n.ToInt64()));
case (SqlType.Blob):
// fall through
case (SqlType.Binary):
// fall through
case (SqlType.VarBinary):
// fall through
case (SqlType.LongVarBinary):
return(new BinaryObject(n.ToByteArray()));
case (SqlType.Null):
return(null);
default:
throw new InvalidCastException();
}
}
/**
* Creates a BigNumber from the given data.
*/
public static BigNumber Create(byte[] buf, int scale, NumberState state)
{
if (state == NumberState.None) {
// This inlines common numbers to save a bit of memory.
if (scale == 0 && buf.Length == 1) {
if (buf[0] == 0) {
return Zero;
} else if (buf[0] == 1) {
return One;
}
}
return new BigNumber(buf, scale, state);
} else if (state == NumberState.NegativeInfinity) {
return NegativeInfinity;
} else if (state == NumberState.PositiveInfinity) {
return PositiveInfinity;
} else if (state == NumberState.NotANumber) {
return NaN;
} else {
throw new ApplicationException("Unknown number state.");
}
}
internal Number(NumberState state)
{
Numerator = 0;
Denominator = 0;
State = state;
}
/// <summary>
/// Constructs the number.
/// </summary>
/// <param name="numberState"></param>
/// <param name="bigDecimal"></param>
internal BigNumber(NumberState numberState, BigDecimal bigDecimal)
{
this.numberState = numberState;
if (numberState == NumberState.None)
SetBigDecimal(bigDecimal);
}
public void SetNumberState(NumberState state) => _state = state;
private BigNumber(byte[] buf, int scale, NumberState state)
{
numberState = state;
if (numberState == NumberState.None) {
BigInteger bigint = new BigInteger(buf);
SetBigDecimal(new BigDecimal(bigint, scale));
}
}
private static Token GetToken(string json, ref int i)
{
while (i < json.Length && char.IsWhiteSpace(json[i]))
{
i++;
}
Token token = new Token();
string sub = json.Substring(i);
if (json[i] == '{')
{
token.type = TokenType.LBrace;
i = i + 1;
}
else if (json[i] == '}')
{
token.type = TokenType.RBrace;
i = i + 1;
}
else if (json[i] == '[')
{
token.type = TokenType.LBracket;
i = i + 1;
}
else if (json[i] == ']')
{
token.type = TokenType.RBracket;
i = i + 1;
}
else if (json[i] == ':')
{
token.type = TokenType.Colon;
i = i + 1;
}
else if (json[i] == ',')
{
token.type = TokenType.Comma;
i = i + 1;
}
else if (sub.StartsWith("true"))
{
token.type = TokenType.True;
i = i + 4;
}
else if (sub.StartsWith("false"))
{
token.type = TokenType.False;
i = i + 4;
}
else if (sub.StartsWith("null"))
{
token.type = TokenType.Null;
i = i + 4;
}
else if (json[i] == '"') //string
{
StringBuilder sb = new StringBuilder();
i++;
while (i < json.Length)
{
int len = 0;
while (i + len < json.Length && json[i + len] != '"' && json[i + len] != '\\')
{
len++;
}
sb.Append(json.Substring(i, len));
if (i + len >= json.Length)
{
throw new Exception("未找到匹配的引号");
}
else if (json[i + len] == '"')
{
i += len + 1;
break;
}
i += len + 1;
switch (json[i])
{
case '"':
sb.Append('"');
i++;
break;
case '\\':
sb.Append('\\');
i++;
break;
case '/':
sb.Append('/');
i++;
break;
case 'b':
sb.Append('\b');
i++;
break;
case 'f':
sb.Append('\f');
i++;
break;
case 'n':
sb.Append('\n');
i++;
break;
case 'r':
sb.Append('\r');
i++;
break;
case 't':
sb.Append('\t');
i++;
break;
case 'u':
string hex = json.Substring(i + 1, 4);
ushort code = Convert.ToUInt16(hex, 16);
char c = (char)code;
sb.Append(c);
i += 5;
break;
}
}
token.value = sb.ToString();
token.type = TokenType.String;
}
else if (json[i] == '-' || char.IsNumber(json[i])) //nubmer
{
dynamic value = 0;
bool isMinus = false;
int frac = 10;
bool isExponentNegative = false;
int exponent = 0;
NumberState state = NumberState.Start;
while (state != NumberState.End)
{
switch (state)
{
case NumberState.Start:
if (json[i] == '-')
{
isMinus = true;
state = NumberState.MinusRead;
}
else if (json[i] == '0')
{
state = NumberState.ZeroRead;
}
else if (char.IsNumber(json[i]))
{
value = CharToInt(json[i]);
state = NumberState.InInt;
}
else
{
throw new Exception("不能识别的字符‘" + json[i] + "’");
}
i++;
break;
case NumberState.MinusRead:
if (json[i] == '0')
{
state = NumberState.ZeroRead;
}
else if (char.IsNumber(json[i]))
{
value = CharToInt(json[i]);
state = NumberState.InInt;
}
else
{
throw new Exception("不能识别的字符‘" + json[i] + "’");
}
i++;
break;
case NumberState.InInt:
if (char.IsNumber(json[i]))
{
value *= 10;
value += CharToInt(json[i]);
}
else if (json[i] == '.')
{
state = NumberState.DotRead;
}
else if (json[i] == 'e' || json[i] == 'E')
{
state = NumberState.ERead;
}
else
{
i--;
state = NumberState.End;
}
i++;
break;
case NumberState.ZeroRead:
if (json[i] == '.')
{
state = NumberState.DotRead;
}
else if (json[i] == 'e' || json[i] == 'E')
{
state = NumberState.ERead;
}
else
{
i--;
state = NumberState.End;
}
i++;
break;
case NumberState.DotRead:
if (char.IsNumber(json[i]))
{
value += (double)CharToInt(json[i]) / frac;
frac *= 10;
state = NumberState.InFraction;
}
else
{
throw new Exception("不能识别的字符‘" + json[i] + "’");
}
i++;
break;
case NumberState.InFraction:
if (char.IsNumber(json[i]))
{
value += (double)CharToInt(json[i]) / frac;
frac *= 10;
}
else if (json[i] == 'e' || json[i] == 'E')
{
state = NumberState.ERead;
}
else
{
i--;
state = NumberState.End;
}
i++;
break;
case NumberState.ERead:
if (char.IsNumber(json[i]))
{
exponent = CharToInt(json[i]);
state = NumberState.InExponent;
}
else if (json[i] == '+')
{
state = NumberState.InExponent;
}
else if (json[i] == '-')
{
isExponentNegative = true;
state = NumberState.InExponent;
}
else
{
throw new Exception("不能识别的字符‘" + json[i] + "’");
}
i++;
break;
case NumberState.InExponent:
if (char.IsNumber(json[i]))
{
exponent *= 10;
exponent = CharToInt(json[i]);
}
else
{
i--;
state = NumberState.End;
}
i++;
break;
}
if (i >= json.Length)
{
state = NumberState.End;
}
}
if (exponent != 0)
{
if (isExponentNegative)
{
value = value * Math.Pow(10, -exponent);
}
else
{
value = value * Math.Pow(10, exponent);
}
}
if (isMinus)
{
token.value = -value;
}
else
{
token.value = value;
}
token.type = TokenType.Number;
}
else
{
throw new Exception("不能识别的字符‘" + json[i] + "’");
}
while (i < json.Length && char.IsWhiteSpace(json[i]))
{
i++;
}
return(token);
}
private Number(NumberState state, NumberKind kind)
{
this.State = state;
this.Kind = kind;
}