internal static bool Parse(string s, NumberStyles style, IFormatProvider provider, bool tryParse, out uint result, out Exception exc)
{
result = 0;
exc = null;
if (s == null)
{
if (!tryParse)
{
exc = new ArgumentNullException("s");
}
return(false);
}
if (s.Length == 0)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
NumberFormatInfo nfi = null;
if (provider != null)
{
Type typeNFI = typeof(NumberFormatInfo);
nfi = (NumberFormatInfo)provider.GetFormat(typeNFI);
}
if (nfi == null)
{
nfi = Thread.CurrentThread.CurrentCulture.NumberFormat;
}
if (!Int32.CheckStyle(style, tryParse, ref exc))
{
return(false);
}
bool AllowCurrencySymbol = (style & NumberStyles.AllowCurrencySymbol) != 0;
bool AllowHexSpecifier = (style & NumberStyles.AllowHexSpecifier) != 0;
bool AllowThousands = (style & NumberStyles.AllowThousands) != 0;
bool AllowDecimalPoint = (style & NumberStyles.AllowDecimalPoint) != 0;
bool AllowParentheses = (style & NumberStyles.AllowParentheses) != 0;
bool AllowTrailingSign = (style & NumberStyles.AllowTrailingSign) != 0;
bool AllowLeadingSign = (style & NumberStyles.AllowLeadingSign) != 0;
bool AllowTrailingWhite = (style & NumberStyles.AllowTrailingWhite) != 0;
bool AllowLeadingWhite = (style & NumberStyles.AllowLeadingWhite) != 0;
bool AllowExponent = (style & NumberStyles.AllowExponent) != 0;
int pos = 0;
if (AllowLeadingWhite && !Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
bool foundOpenParentheses = false;
bool negative = false;
bool foundSign = false;
bool foundCurrency = false;
// Pre-number stuff
if (AllowParentheses && s [pos] == '(')
{
foundOpenParentheses = true;
foundSign = true;
negative = true; // MS always make the number negative when there parentheses
// even when NumberFormatInfo.NumberNegativePattern != 0!!!
pos++;
if (AllowLeadingWhite && !Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
if (s.Substring(pos, nfi.NegativeSign.Length) == nfi.NegativeSign)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
if (s.Substring(pos, nfi.PositiveSign.Length) == nfi.PositiveSign)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
}
if (AllowLeadingSign && !foundSign)
{
// Sign + Currency
Int32.FindSign(ref pos, s, nfi, ref foundSign, ref negative);
if (foundSign)
{
if (AllowLeadingWhite && !Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
if (AllowCurrencySymbol)
{
Int32.FindCurrency(ref pos, s, nfi,
ref foundCurrency);
if (foundCurrency && AllowLeadingWhite &&
!Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
}
}
}
if (AllowCurrencySymbol && !foundCurrency)
{
// Currency + sign
Int32.FindCurrency(ref pos, s, nfi, ref foundCurrency);
if (foundCurrency)
{
if (AllowLeadingWhite && !Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
if (foundCurrency)
{
if (!foundSign && AllowLeadingSign)
{
Int32.FindSign(ref pos, s, nfi, ref foundSign,
ref negative);
if (foundSign && AllowLeadingWhite &&
!Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
}
}
}
}
uint number = 0;
int nDigits = 0;
int decimalPointPos = -1;
uint digitValue;
char hexDigit;
// Number stuff
// Just the same as Int32, but this one adds instead of substract
while (pos < s.Length)
{
if (!Int32.ValidDigit(s [pos], AllowHexSpecifier))
{
if (AllowThousands &&
(Int32.FindOther(ref pos, s, nfi.NumberGroupSeparator) ||
Int32.FindOther(ref pos, s, nfi.CurrencyGroupSeparator)))
{
continue;
}
if (AllowDecimalPoint && decimalPointPos < 0 &&
(Int32.FindOther(ref pos, s, nfi.NumberDecimalSeparator) ||
Int32.FindOther(ref pos, s, nfi.CurrencyDecimalSeparator)))
{
decimalPointPos = nDigits;
continue;
}
break;
}
nDigits++;
if (AllowHexSpecifier)
{
hexDigit = s [pos++];
if (Char.IsDigit(hexDigit))
{
digitValue = (uint)(hexDigit - '0');
}
else if (Char.IsLower(hexDigit))
{
digitValue = (uint)(hexDigit - 'a' + 10);
}
else
{
digitValue = (uint)(hexDigit - 'A' + 10);
}
if (tryParse)
{
ulong l = number * 16 + digitValue;
if (l > MaxValue)
{
return(false);
}
number = (uint)l;
}
else
{
number = checked (number * 16 + digitValue);
}
continue;
}
try {
number = checked (number * 10 + (uint)(s [pos++] - '0'));
} catch (OverflowException) {
if (!tryParse)
{
exc = new OverflowException(Locale.GetText("Value too large or too small."));
}
return(false);
}
}
// Post number stuff
if (nDigits == 0)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
int exponent = 0;
if (AllowExponent)
{
if (Int32.FindExponent(ref pos, s, ref exponent, tryParse, ref exc) && exc != null)
{
return(false);
}
}
if (AllowTrailingSign && !foundSign)
{
// Sign + Currency
Int32.FindSign(ref pos, s, nfi, ref foundSign, ref negative);
if (foundSign && pos < s.Length)
{
if (AllowTrailingWhite && !Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
}
}
if (AllowCurrencySymbol && !foundCurrency)
{
if (AllowTrailingWhite && pos < s.Length && !Int32.JumpOverWhite(ref pos, s, false, tryParse, ref exc))
{
return(false);
}
// Currency + sign
Int32.FindCurrency(ref pos, s, nfi, ref foundCurrency);
if (foundCurrency && pos < s.Length)
{
if (AllowTrailingWhite && !Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
if (!foundSign && AllowTrailingSign)
{
Int32.FindSign(ref pos, s, nfi, ref foundSign,
ref negative);
}
}
}
if (AllowTrailingWhite && pos < s.Length && !Int32.JumpOverWhite(ref pos, s, false, tryParse, ref exc))
{
return(false);
}
if (foundOpenParentheses)
{
if (pos >= s.Length || s [pos++] != ')')
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
if (AllowTrailingWhite && pos < s.Length && !Int32.JumpOverWhite(ref pos, s, false, tryParse, ref exc))
{
return(false);
}
}
if (pos < s.Length && s [pos] != '\u0000')
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
// -0 is legal but other negative values are not
if (negative && (number > 0))
{
if (!tryParse)
{
exc = new OverflowException(
Locale.GetText("Negative number"));
}
return(false);
}
if (decimalPointPos >= 0)
{
exponent = exponent - nDigits + decimalPointPos;
}
if (exponent < 0)
{
//
// Any non-zero values after decimal point are not allowed
//
long remainder;
number = (uint)Math.DivRem(number, (int)Math.Pow(10, -exponent), out remainder);
if (remainder != 0)
{
if (!tryParse)
{
exc = new OverflowException("Value too large or too small.");
}
return(false);
}
}
else if (exponent > 0)
{
//
// result *= 10^exponent
//
// Reduce the risk of throwing an overflow exc
//
double res = checked (Math.Pow(10, exponent) * number);
if (res < MinValue || res > MaxValue)
{
if (!tryParse)
{
exc = new OverflowException("Value too large or too small.");
}
return(false);
}
number = (uint)res;
}
result = number;
return(true);
}
internal static bool Parse(string s, NumberStyles style, IFormatProvider fp, bool tryParse, out long result, out Exception exc)
{
result = 0;
exc = null;
if (s == null)
{
if (!tryParse)
{
exc = new ArgumentNullException("s");
}
return(false);
}
if (s.Length == 0)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
NumberFormatInfo nfi = null;
if (fp != null)
{
Type typeNFI = typeof(System.Globalization.NumberFormatInfo);
nfi = (NumberFormatInfo)fp.GetFormat(typeNFI);
}
if (nfi == null)
{
nfi = Thread.CurrentThread.CurrentCulture.NumberFormat;
}
if (!Int32.CheckStyle(style, tryParse, ref exc))
{
return(false);
}
bool AllowCurrencySymbol = (style & NumberStyles.AllowCurrencySymbol) != 0;
bool AllowHexSpecifier = (style & NumberStyles.AllowHexSpecifier) != 0;
bool AllowThousands = (style & NumberStyles.AllowThousands) != 0;
bool AllowDecimalPoint = (style & NumberStyles.AllowDecimalPoint) != 0;
bool AllowParentheses = (style & NumberStyles.AllowParentheses) != 0;
bool AllowTrailingSign = (style & NumberStyles.AllowTrailingSign) != 0;
bool AllowLeadingSign = (style & NumberStyles.AllowLeadingSign) != 0;
bool AllowTrailingWhite = (style & NumberStyles.AllowTrailingWhite) != 0;
bool AllowLeadingWhite = (style & NumberStyles.AllowLeadingWhite) != 0;
bool AllowExponent = (style & NumberStyles.AllowExponent) != 0;
int pos = 0;
if (AllowLeadingWhite && !Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
bool foundOpenParentheses = false;
bool negative = false;
bool foundSign = false;
bool foundCurrency = false;
// Pre-number stuff
if (AllowParentheses && s [pos] == '(')
{
foundOpenParentheses = true;
foundSign = true;
negative = true; // MS always make the number negative when there parentheses
// even when NumberFormatInfo.NumberNegativePattern != 0!!!
pos++;
if (AllowLeadingWhite && !Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
if (s.Substring(pos, nfi.NegativeSign.Length) == nfi.NegativeSign)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
if (s.Substring(pos, nfi.PositiveSign.Length) == nfi.PositiveSign)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
}
if (AllowLeadingSign && !foundSign)
{
// Sign + Currency
Int32.FindSign(ref pos, s, nfi, ref foundSign, ref negative);
if (foundSign)
{
if (AllowLeadingWhite && !Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
if (AllowCurrencySymbol)
{
Int32.FindCurrency(ref pos, s, nfi,
ref foundCurrency);
if (foundCurrency && AllowLeadingWhite &&
!Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
}
}
}
if (AllowCurrencySymbol && !foundCurrency)
{
// Currency + sign
Int32.FindCurrency(ref pos, s, nfi, ref foundCurrency);
if (foundCurrency)
{
if (AllowLeadingWhite && !Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
if (foundCurrency)
{
if (!foundSign && AllowLeadingSign)
{
Int32.FindSign(ref pos, s, nfi, ref foundSign,
ref negative);
if (foundSign && AllowLeadingWhite &&
!Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
}
}
}
}
long number = 0;
int nDigits = 0;
bool decimalPointFound = false;
int digitValue;
char hexDigit;
int exponent = 0;
// Number stuff
do
{
if (!Int32.ValidDigit(s [pos], AllowHexSpecifier))
{
if (AllowThousands &&
(Int32.FindOther(ref pos, s, nfi.NumberGroupSeparator) ||
Int32.FindOther(ref pos, s, nfi.CurrencyGroupSeparator)))
{
continue;
}
else
if (!decimalPointFound && AllowDecimalPoint &&
(Int32.FindOther(ref pos, s, nfi.NumberDecimalSeparator) ||
Int32.FindOther(ref pos, s, nfi.CurrencyDecimalSeparator)))
{
decimalPointFound = true;
continue;
}
break;
}
if (AllowHexSpecifier)
{
nDigits++;
hexDigit = s [pos++];
if (Char.IsDigit(hexDigit))
{
digitValue = (int)(hexDigit - '0');
}
else if (Char.IsLower(hexDigit))
{
digitValue = (int)(hexDigit - 'a' + 10);
}
else
{
digitValue = (int)(hexDigit - 'A' + 10);
}
ulong unumber = (ulong)number;
// IMPROVME: We could avoid catching OverflowException
try {
number = (long)checked (unumber * 16ul + (ulong)digitValue);
} catch (OverflowException e) {
if (!tryParse)
{
exc = e;
}
return(false);
}
}
else if (decimalPointFound)
{
nDigits++;
// Allows decimal point as long as it's only
// followed by zeroes.
if (s [pos++] != '0')
{
if (!tryParse)
{
exc = new OverflowException("Value too large or too " +
"small.");
}
return(false);
}
}
else
{
nDigits++;
try {
// Calculations done as negative
// (abs (MinValue) > abs (MaxValue))
number = checked (
number * 10 -
(long)(s [pos++] - '0')
);
} catch (OverflowException) {
if (!tryParse)
{
exc = new OverflowException("Value too large or too " +
"small.");
}
return(false);
}
}
} while (pos < s.Length);
// Post number stuff
if (nDigits == 0)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
if (AllowExponent)
{
if (Int32.FindExponent(ref pos, s, ref exponent, tryParse, ref exc) && exc != null)
{
return(false);
}
}
if (AllowTrailingSign && !foundSign)
{
// Sign + Currency
Int32.FindSign(ref pos, s, nfi, ref foundSign, ref negative);
if (foundSign && pos < s.Length)
{
if (AllowTrailingWhite && !Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
}
}
if (AllowCurrencySymbol && !foundCurrency)
{
if (AllowTrailingWhite && pos < s.Length && !Int32.JumpOverWhite(ref pos, s, false, tryParse, ref exc))
{
return(false);
}
// Currency + sign
Int32.FindCurrency(ref pos, s, nfi, ref foundCurrency);
if (foundCurrency && pos < s.Length)
{
if (AllowTrailingWhite && !Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
if (!foundSign && AllowTrailingSign)
{
Int32.FindSign(ref pos, s, nfi, ref foundSign,
ref negative);
}
}
}
if (AllowTrailingWhite && pos < s.Length && !Int32.JumpOverWhite(ref pos, s, false, tryParse, ref exc))
{
return(false);
}
if (foundOpenParentheses)
{
if (pos >= s.Length || s [pos++] != ')')
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
if (AllowTrailingWhite && pos < s.Length && !Int32.JumpOverWhite(ref pos, s, false, tryParse, ref exc))
{
return(false);
}
}
if (pos < s.Length && s [pos] != '\u0000')
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
if (!negative && !AllowHexSpecifier)
{
try {
number = checked (-number);
} catch (OverflowException e) {
if (!tryParse)
{
exc = e;
}
return(false);
}
}
// result *= 10^exponent
if (exponent > 0)
{
// Reduce the risk of throwing an overflow exc
double res = checked (Math.Pow(10, exponent) * number);
if (res < Int32.MinValue || res > Int32.MaxValue)
{
if (!tryParse)
{
exc = new OverflowException("Value too large or too small.");
}
return(false);
}
number = (long)res;
}
result = number;
return(true);
}
internal static bool Parse(string s, bool tryParse, out uint result, out Exception exc)
{
uint val = 0;
int len;
int i;
bool digits_seen = false;
bool has_negative_sign = false;
result = 0;
exc = null;
if (s == null)
{
if (!tryParse)
{
exc = new ArgumentNullException("s");
}
return(false);
}
len = s.Length;
char c;
for (i = 0; i < len; i++)
{
c = s [i];
if (!Char.IsWhiteSpace(c))
{
break;
}
}
if (i == len)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
if (s [i] == '+')
{
i++;
}
else
if (s[i] == '-')
{
i++;
has_negative_sign = true;
}
for (; i < len; i++)
{
c = s [i];
if (c >= '0' && c <= '9')
{
uint d = (uint)(c - '0');
if ((val > MaxValue / 10) || (val == (MaxValue / 10) && d > (MaxValue % 10)))
{
if (!tryParse)
{
exc = new OverflowException(Locale.GetText("Value is too large"));
}
return(false);
}
val = (val * 10) + d;
digits_seen = true;
}
else if (!Int32.ProcessTrailingWhitespace(tryParse, s, i, ref exc))
{
return(false);
}
}
if (!digits_seen)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
// -0 is legal but other negative values are not
if (has_negative_sign && (val > 0))
{
if (!tryParse)
{
exc = new OverflowException(
Locale.GetText("Negative number"));
}
return(false);
}
result = val;
return(true);
}
// FIXME: check if digits are group in correct numbers between the group separators
internal static bool Parse(string s, NumberStyles style, IFormatProvider provider, bool tryParse, out double result, out Exception exc)
{
result = 0;
exc = null;
if (s == null)
{
if (!tryParse)
{
exc = new ArgumentNullException("s");
}
return(false);
}
if (s.Length == 0)
{
if (!tryParse)
{
exc = new FormatException();
}
return(false);
}
// yes it's counter intuitive (buggy?) but even TryParse actually throws in this case
if ((style & NumberStyles.AllowHexSpecifier) != 0)
{
string msg = Locale.GetText("Double doesn't support parsing with '{0}'.", "AllowHexSpecifier");
throw new ArgumentException(msg);
}
if (style > NumberStyles.Any)
{
if (!tryParse)
{
exc = new ArgumentException();
}
return(false);
}
NumberFormatInfo format = NumberFormatInfo.GetInstance(provider);
if (format == null)
{
throw new Exception("How did this happen?");
}
//
// validate and prepare string for C
//
int len = s.Length;
int didx = 0;
int sidx = 0;
char c;
bool allow_leading_white = (style & NumberStyles.AllowLeadingWhite) != 0;
bool allow_trailing_white = ((style & NumberStyles.AllowTrailingWhite) != 0);
if (allow_leading_white)
{
while (sidx < len && Char.IsWhiteSpace(s [sidx]))
{
sidx++;
}
if (sidx == len)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
}
int sEndPos = s.Length - 1;
if (allow_trailing_white)
{
while (Char.IsWhiteSpace(s [sEndPos]))
{
sEndPos--;
}
}
if (TryParseStringConstant(format.NaNSymbol, s, sidx, sEndPos))
{
result = double.NaN;
return(true);
}
if (TryParseStringConstant(format.PositiveInfinitySymbol, s, sidx, sEndPos))
{
result = double.PositiveInfinity;
return(true);
}
if (TryParseStringConstant(format.NegativeInfinitySymbol, s, sidx, sEndPos))
{
result = double.NegativeInfinity;
return(true);
}
byte [] b = new byte [len + 1];
//
// Machine state
//
var state = ParseState.AllowSign;
//
// Setup
//
string decimal_separator = null;
string group_separator = null;
string currency_symbol = null;
int decimal_separator_len = 0;
int group_separator_len = 0;
int currency_symbol_len = 0;
if ((style & NumberStyles.AllowDecimalPoint) != 0)
{
decimal_separator = format.NumberDecimalSeparator;
decimal_separator_len = decimal_separator.Length;
}
if ((style & NumberStyles.AllowThousands) != 0)
{
group_separator = format.NumberGroupSeparator;
group_separator_len = group_separator.Length;
}
if ((style & NumberStyles.AllowCurrencySymbol) != 0)
{
currency_symbol = format.CurrencySymbol;
currency_symbol_len = currency_symbol.Length;
}
string positive = format.PositiveSign;
string negative = format.NegativeSign;
bool allow_trailing_parenthes = false;
for (; sidx < len; sidx++)
{
c = s [sidx];
if (c == '\0')
{
sidx = len;
continue;
}
switch (state)
{
case ParseState.AllowSign:
if ((style & NumberStyles.AllowLeadingSign) != 0)
{
if (c == positive [0] &&
s.Substring(sidx, positive.Length) == positive)
{
state = ParseState.Digits;
sidx += positive.Length - 1;
continue;
}
if (c == negative [0] &&
s.Substring(sidx, negative.Length) == negative)
{
state = ParseState.Digits;
b [didx++] = (byte)'-';
sidx += negative.Length - 1;
continue;
}
}
if ((style & NumberStyles.AllowParentheses) != 0 && c == '(')
{
b [didx++] = (byte)'-';
state = ParseState.Digits;
allow_trailing_parenthes = true;
continue;
}
state = ParseState.Digits;
goto case ParseState.Digits;
case ParseState.Digits:
if (Char.IsDigit(c))
{
b [didx++] = (byte)c;
break;
}
if (c == 'e' || c == 'E')
{
goto case ParseState.Decimal;
}
if (allow_trailing_parenthes && c == ')')
{
allow_trailing_parenthes = false;
state = ParseState.ConsumeWhiteSpace;
continue;
}
if (decimal_separator_len > 0 &&
decimal_separator [0] == c)
{
if (String.CompareOrdinal(s, sidx, decimal_separator, 0, decimal_separator_len) == 0)
{
b [didx++] = (byte)'.';
sidx += decimal_separator_len - 1;
state = ParseState.Decimal;
break;
}
}
if (group_separator_len > 0 &&
group_separator [0] == c)
{
if (s.Substring(sidx, group_separator_len) ==
group_separator)
{
sidx += group_separator_len - 1;
break;
}
}
if (currency_symbol_len > 0 &&
currency_symbol [0] == c)
{
if (s.Substring(sidx, currency_symbol_len) ==
currency_symbol)
{
sidx += currency_symbol_len - 1;
currency_symbol_len = 0;
break;
}
}
state = ParseState.TrailingSymbols;
goto case ParseState.TrailingSymbols;
case ParseState.Decimal:
if (Char.IsDigit(c))
{
b [didx++] = (byte)c;
break;
}
if (c == 'e' || c == 'E')
{
if ((style & NumberStyles.AllowExponent) == 0)
{
if (!tryParse)
{
exc = new FormatException("Unknown char: " + c);
}
return(false);
}
b [didx++] = (byte)c;
state = ParseState.ExponentSign;
break;
}
state = ParseState.TrailingSymbols;
goto case ParseState.TrailingSymbols;
case ParseState.ExponentSign:
if (Char.IsDigit(c))
{
state = ParseState.Exponent;
goto case ParseState.Exponent;
}
if (c == positive [0] &&
s.Substring(sidx, positive.Length) == positive)
{
state = ParseState.Digits;
sidx += positive.Length - 1;
continue;
}
if (c == negative [0] &&
s.Substring(sidx, negative.Length) == negative)
{
state = ParseState.Digits;
b [didx++] = (byte)'-';
sidx += negative.Length - 1;
continue;
}
goto case ParseState.ConsumeWhiteSpace;
case ParseState.Exponent:
if (Char.IsDigit(c))
{
b [didx++] = (byte)c;
break;
}
state = ParseState.TrailingSymbols;
goto case ParseState.TrailingSymbols;
case ParseState.TrailingSymbols:
if ((style & NumberStyles.AllowTrailingSign) != 0)
{
if (positive != null && c == positive [0] &&
s.Substring(sidx, positive.Length) == positive)
{
state = ParseState.ConsumeWhiteSpace;
sidx += positive.Length - 1;
allow_trailing_parenthes = false;
positive = null;
continue;
}
if (negative != null && c == negative [0] &&
s.Substring(sidx, negative.Length) == negative)
{
state = ParseState.ConsumeWhiteSpace;
Array.Copy(b, 0, b, 1, didx);
b [0] = (byte)'-';
++didx;
sidx += negative.Length - 1;
allow_trailing_parenthes = false;
negative = null;
continue;
}
}
if (currency_symbol_len > 0 &&
currency_symbol [0] == c)
{
if (s.Substring(sidx, currency_symbol_len) ==
currency_symbol)
{
sidx += currency_symbol_len - 1;
currency_symbol_len = 0;
break;
}
}
if (allow_trailing_white && Char.IsWhiteSpace(c))
{
break;
}
goto case ParseState.ConsumeWhiteSpace;
case ParseState.ConsumeWhiteSpace:
if (allow_trailing_parenthes && c == ')')
{
allow_trailing_parenthes = false;
state = ParseState.ConsumeWhiteSpace;
break;
}
if (allow_trailing_white && Char.IsWhiteSpace(c))
{
state = ParseState.ConsumeWhiteSpace;
break;
}
if (!tryParse)
{
exc = new FormatException("Unknown char");
}
return(false);
}
if (state == ParseState.Exit)
{
break;
}
}
b [didx] = 0;
unsafe
{
fixed(byte *p = &b[0])
{
double retVal;
if (!ParseImpl(p, out retVal))
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
if (IsPositiveInfinity(retVal) || IsNegativeInfinity(retVal))
{
if (!tryParse)
{
exc = new OverflowException();
}
return(false);
}
result = retVal;
return(true);
}
}
}
internal static bool Parse(string s, bool tryParse, out long result, out Exception exc)
{
long val = 0;
int len;
int i, sign = 1;
bool digits_seen = false;
result = 0;
exc = null;
NumberFormatInfo nfi = Thread.CurrentThread.CurrentCulture.NumberFormat;
if (s == null)
{
if (!tryParse)
{
exc = new ArgumentNullException("s");
}
return(false);
}
len = s.Length;
char c;
for (i = 0; i < len; i++)
{
c = s [i];
if (!Char.IsWhiteSpace(c))
{
break;
}
}
if (i == len)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
if (String.Compare(s, i, nfi.PositiveSign, 0, nfi.PositiveSign.Length) == 0)
{
i += nfi.PositiveSign.Length;
}
else if (String.Compare(s, i, nfi.NegativeSign, 0, nfi.NegativeSign.Length) == 0)
{
sign = -1;
i += nfi.NegativeSign.Length;
}
for (; i < len; i++)
{
c = s [i];
if (c >= '0' && c <= '9')
{
byte d = (byte)(c - '0');
if (val > (MaxValue / 10))
{
goto overflow;
}
if (val == (MaxValue / 10))
{
if ((d > (MaxValue % 10)) && (sign == 1 || (d > ((MaxValue % 10) + 1))))
{
goto overflow;
}
if (sign == -1)
{
val = (val * sign * 10) - d;
}
else
{
val = (val * 10) + d;
}
if (Int32.ProcessTrailingWhitespace(tryParse, s, i + 1, ref exc))
{
result = val;
return(true);
}
goto overflow;
}
else
{
val = val * 10 + d;
}
digits_seen = true;
}
else if (!Int32.ProcessTrailingWhitespace(tryParse, s, i, ref exc))
{
return(false);
}
}
if (!digits_seen)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
if (sign == -1)
{
result = val * sign;
}
else
{
result = val;
}
return(true);
overflow:
if (!tryParse)
{
exc = new OverflowException("Value is too large");
}
return(false);
}
internal static bool Parse(string s, bool tryParse, out short result, out Exception exc)
{
short val = 0;
int len;
int i, sign = 1;
bool digits_seen = false;
result = 0;
exc = null;
if (s == null)
{
if (!tryParse)
{
exc = new ArgumentNullException("s");
}
return(false);
}
len = s.Length;
char c;
for (i = 0; i < len; i++)
{
c = s [i];
if (!Char.IsWhiteSpace(c))
{
break;
}
}
if (i == len)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
c = s [i];
if (c == '+')
{
i++;
}
else if (c == '-')
{
sign = -1;
i++;
}
for (; i < len; i++)
{
c = s [i];
if (c >= '0' && c <= '9')
{
byte d = (byte)(c - '0');
if (val > (MaxValue / 10))
{
goto overflow;
}
if (val == (MaxValue / 10))
{
if ((d > (MaxValue % 10)) && (sign == 1 || (d > ((MaxValue % 10) + 1))))
{
goto overflow;
}
if (sign == -1)
{
val = (short)((val * sign * 10) - d);
}
else
{
val = (short)((val * 10) + d);
}
if (Int32.ProcessTrailingWhitespace(tryParse, s, i + 1, ref exc))
{
result = val;
return(true);
}
goto overflow;
}
else
{
val = (short)(val * 10 + d);
}
digits_seen = true;
}
else if (!Int32.ProcessTrailingWhitespace(tryParse, s, i, ref exc))
{
return(false);
}
}
if (!digits_seen)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
if (sign == -1)
{
result = (short)(val * sign);
}
else
{
result = val;
}
return(true);
overflow:
if (!tryParse)
{
exc = new OverflowException("Value is too large");
}
return(false);
}
internal static bool Parse(string s, NumberStyles style, IFormatProvider provider, bool tryParse, out uint result, out Exception exc)
{
result = 0;
exc = null;
if (s == null)
{
if (!tryParse)
{
exc = new ArgumentNullException("s");
}
return(false);
}
if (s.Length == 0)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
NumberFormatInfo nfi = null;
if (provider != null)
{
Type typeNFI = typeof(NumberFormatInfo);
nfi = (NumberFormatInfo)provider.GetFormat(typeNFI);
}
if (nfi == null)
{
nfi = Thread.CurrentThread.CurrentCulture.NumberFormat;
}
if (!Int32.CheckStyle(style, tryParse, ref exc))
{
return(false);
}
bool AllowCurrencySymbol = (style & NumberStyles.AllowCurrencySymbol) != 0;
bool AllowHexSpecifier = (style & NumberStyles.AllowHexSpecifier) != 0;
bool AllowThousands = (style & NumberStyles.AllowThousands) != 0;
bool AllowDecimalPoint = (style & NumberStyles.AllowDecimalPoint) != 0;
bool AllowParentheses = (style & NumberStyles.AllowParentheses) != 0;
bool AllowTrailingSign = (style & NumberStyles.AllowTrailingSign) != 0;
bool AllowLeadingSign = (style & NumberStyles.AllowLeadingSign) != 0;
bool AllowTrailingWhite = (style & NumberStyles.AllowTrailingWhite) != 0;
bool AllowLeadingWhite = (style & NumberStyles.AllowLeadingWhite) != 0;
int pos = 0;
if (AllowLeadingWhite && !Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
bool foundOpenParentheses = false;
bool negative = false;
bool foundSign = false;
bool foundCurrency = false;
// Pre-number stuff
if (AllowParentheses && s [pos] == '(')
{
foundOpenParentheses = true;
foundSign = true;
negative = true; // MS always make the number negative when there parentheses
// even when NumberFormatInfo.NumberNegativePattern != 0!!!
pos++;
if (AllowLeadingWhite && !Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
if (s.Substring(pos, nfi.NegativeSign.Length) == nfi.NegativeSign)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
if (s.Substring(pos, nfi.PositiveSign.Length) == nfi.PositiveSign)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
}
if (AllowLeadingSign && !foundSign)
{
// Sign + Currency
Int32.FindSign(ref pos, s, nfi, ref foundSign, ref negative);
if (foundSign)
{
if (AllowLeadingWhite && !Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
if (AllowCurrencySymbol)
{
Int32.FindCurrency(ref pos, s, nfi, ref foundCurrency);
if (foundCurrency && AllowLeadingWhite &&
!Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
}
}
}
if (AllowCurrencySymbol && !foundCurrency)
{
// Currency + sign
Int32.FindCurrency(ref pos, s, nfi, ref foundCurrency);
if (foundCurrency)
{
if (AllowLeadingWhite && !Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
if (foundCurrency)
{
if (!foundSign && AllowLeadingSign)
{
Int32.FindSign(ref pos, s, nfi, ref foundSign, ref negative);
if (foundSign && AllowLeadingWhite &&
!Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
}
}
}
}
uint number = 0;
int nDigits = 0;
bool decimalPointFound = false;
uint digitValue;
char hexDigit;
// Number stuff
// Just the same as Int32, but this one adds instead of substract
do
{
if (!Int32.ValidDigit(s [pos], AllowHexSpecifier))
{
if (AllowThousands && Int32.FindOther(ref pos, s, nfi.NumberGroupSeparator))
{
continue;
}
else
if (!decimalPointFound && AllowDecimalPoint &&
Int32.FindOther(ref pos, s, nfi.NumberDecimalSeparator))
{
decimalPointFound = true;
continue;
}
break;
}
else if (AllowHexSpecifier)
{
nDigits++;
hexDigit = s [pos++];
if (Char.IsDigit(hexDigit))
{
digitValue = (uint)(hexDigit - '0');
}
else if (Char.IsLower(hexDigit))
{
digitValue = (uint)(hexDigit - 'a' + 10);
}
else
{
digitValue = (uint)(hexDigit - 'A' + 10);
}
if (tryParse)
{
ulong l = number * 16 + digitValue;
if (l > MaxValue)
{
return(false);
}
number = (uint)l;
}
else
{
number = checked (number * 16 + digitValue);
}
}
else if (decimalPointFound)
{
nDigits++;
// Allows decimal point as long as it's only
// followed by zeroes.
if (s [pos++] != '0')
{
if (!tryParse)
{
exc = new OverflowException(Locale.GetText("Value too large or too small."));
}
return(false);
}
}
else
{
nDigits++;
try {
number = checked (number * 10 + (uint)(s [pos++] - '0'));
}
catch (OverflowException) {
if (!tryParse)
{
exc = new OverflowException(Locale.GetText("Value too large or too small."));
}
return(false);
}
}
} while (pos < s.Length);
// Post number stuff
if (nDigits == 0)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
if (AllowTrailingSign && !foundSign)
{
// Sign + Currency
Int32.FindSign(ref pos, s, nfi, ref foundSign, ref negative);
if (foundSign)
{
if (AllowTrailingWhite && !Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
if (AllowCurrencySymbol)
{
Int32.FindCurrency(ref pos, s, nfi, ref foundCurrency);
}
}
}
if (AllowCurrencySymbol && !foundCurrency)
{
// Currency + sign
Int32.FindCurrency(ref pos, s, nfi, ref foundCurrency);
if (foundCurrency)
{
if (AllowTrailingWhite && !Int32.JumpOverWhite(ref pos, s, true, tryParse, ref exc))
{
return(false);
}
if (!foundSign && AllowTrailingSign)
{
Int32.FindSign(ref pos, s, nfi, ref foundSign, ref negative);
}
}
}
if (AllowTrailingWhite && pos < s.Length && !Int32.JumpOverWhite(ref pos, s, false, tryParse, ref exc))
{
return(false);
}
if (foundOpenParentheses)
{
if (pos >= s.Length || s [pos++] != ')')
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
if (AllowTrailingWhite && pos < s.Length && !Int32.JumpOverWhite(ref pos, s, false, tryParse, ref exc))
{
return(false);
}
}
if (pos < s.Length && s [pos] != '\u0000')
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
// -0 is legal but other negative values are not
if (negative && (number > 0))
{
if (!tryParse)
{
exc = new OverflowException(
Locale.GetText("Negative number"));
}
return(false);
}
result = number;
return(true);
}
internal static bool Parse(string s, bool tryParse, out ulong result, out Exception exc)
{
ulong val = 0;
int len;
int i;
bool digits_seen = false;
bool has_negative_sign = false;
exc = null;
result = 0;
if (s == null)
{
if (!tryParse)
{
exc = new ArgumentNullException("s");
}
return(false);
}
len = s.Length;
char c;
for (i = 0; i < len; i++)
{
c = s [i];
if (!Char.IsWhiteSpace(c))
{
break;
}
}
if (i == len)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
if (s [i] == '+')
{
i++;
}
else if (s [i] == '-')
{
i++;
has_negative_sign = true;
}
// Actual number stuff
for (; i < len; i++)
{
c = s [i];
if (c >= '0' && c <= '9')
{
uint d = (uint)(c - '0');
if (val > MaxValue / 10 || (val == MaxValue / 10 && d > MaxValue % 10))
{
if (!tryParse)
{
exc = new OverflowException("Value is too large.");
}
return(false);
}
val = (val * 10) + d;
digits_seen = true;
}
else if (!Int32.ProcessTrailingWhitespace(tryParse, s, i, ref exc))
{
return(false);
}
}
if (!digits_seen)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
if (has_negative_sign && val > 0)
{
if (!tryParse)
{
exc = new OverflowException("Negative number.");
}
return(false);
}
result = val;
return(true);
}
internal static bool Parse(string s, bool tryParse, out sbyte result, out Exception exc)
{
int ival = 0;
int len;
int i;
bool neg = false;
bool digits_seen = false;
result = 0;
exc = null;
if (s == null)
{
if (!tryParse)
{
exc = new ArgumentNullException("s");
}
return(false);
}
len = s.Length;
char c;
for (i = 0; i < len; i++)
{
c = s [i];
if (!Char.IsWhiteSpace(c))
{
break;
}
}
if (i == len)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
c = s [i];
if (c == '+')
{
i++;
}
else if (c == '-')
{
neg = true;
i++;
}
for (; i < len; i++)
{
c = s [i];
if (c >= '0' && c <= '9')
{
if (tryParse)
{
int intval = ival * 10 - (int)(c - '0');
if (intval < MinValue)
{
return(false);
}
ival = (sbyte)intval;
}
else
{
ival = checked (ival * 10 - (int)(c - '0'));
}
digits_seen = true;
}
else
{
if (Char.IsWhiteSpace(c))
{
for (i++; i < len; i++)
{
if (!Char.IsWhiteSpace(s [i]))
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
}
break;
}
else
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
}
}
if (!digits_seen)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
ival = neg ? ival : -ival;
if (ival < SByte.MinValue || ival > SByte.MaxValue)
{
if (!tryParse)
{
exc = new OverflowException();
}
return(false);
}
result = (sbyte)ival;
return(true);
}
internal static bool Parse(string s, bool tryParse, out long result, out Exception exc)
{
long val = 0;
int len;
int i;
int sign = 1;
bool digits_seen = false;
result = 0;
exc = null;
if (s == null)
{
if (!tryParse)
{
exc = new ArgumentNullException("s");
}
return(false);
}
len = s.Length;
char c;
for (i = 0; i < len; i++)
{
c = s[i];
if (!Char.IsWhiteSpace(c))
{
break;
}
}
if (i == len)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
c = s[i];
if (c == '+')
{
i++;
}
else if (c == '-')
{
sign = -1;
i++;
}
for (; i < len; i++)
{
c = s[i];
if (c >= '0' && c <= '9')
{
if (tryParse)
{
val = val * 10 + (c - '0') * sign;
if (sign == 1)
{
if (val < 0)
{
return(false);
}
}
else if (val > 0)
{
return(false);
}
}
else
{
val = checked (val * 10 + (c - '0') * sign);
}
digits_seen = true;
}
else
{
if (Char.IsWhiteSpace(c))
{
for (i++; i < len; i++)
{
if (!Char.IsWhiteSpace(s[i]))
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
}
break;
}
else
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
}
}
if (!digits_seen)
{
if (!tryParse)
{
exc = Int32.GetFormatException();
}
return(false);
}
result = val;
return(true);
}
