internal static bool Parse(string s, bool tryParse, out int result, out Exception exc)
{
int 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 = GetFormatException();
}
return(false);
}
var ps_length = nfi.PositiveSign.Length;
var ns_length = nfi.NegativeSign.Length;
if (len > ps_length && string.CompareOrdinalUnchecked(s, i, ns_length, nfi.PositiveSign, 0, ps_length) == 0)
{
i += ps_length;
}
else if (len > ns_length && string.CompareOrdinalUnchecked(s, i, ns_length, nfi.NegativeSign, 0, ns_length) == 0)
{
sign = -1;
i += ns_length;
}
for (; i < len; i++)
{
c = s [i];
if (c == '\0')
{
i = len;
continue;
}
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 (ProcessTrailingWhitespace(tryParse, s, i + 1, ref exc))
{
result = val;
return(true);
}
goto overflow;
}
else
{
val = val * 10 + d;
}
digits_seen = true;
}
else if (!ProcessTrailingWhitespace(tryParse, s, i, ref exc))
{
return(false);
}
}
if (!digits_seen)
{
if (!tryParse)
{
exc = 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 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);
}
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 = IntParser.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 = IntParser.GetFormatException();
}
return(false);
}
}
break;
}
else
{
if (!tryParse)
{
exc = IntParser.GetFormatException();
}
return(false);
}
}
}
if (!digits_seen)
{
if (!tryParse)
{
exc = IntParser.GetFormatException();
}
return(false);
}
ival = neg ? ival : -ival;
if (ival < MinValue || ival > MaxValue)
{
if (!tryParse)
{
exc = new OverflowException();
}
return(false);
}
result = (sbyte)ival;
return(true);
}
private static bool TryParseEnum(Type enumType, String value, bool ignoreCase, ref EnumResult parseResult)
{
if (enumType == null)
{
throw new ArgumentNullException(nameof(enumType));
}
Contract.EndContractBlock();
RuntimeType rtType = enumType as RuntimeType;
if (rtType == null)
{
throw new ArgumentException(SR.Arg_MustBeType, nameof(enumType));
}
if (!enumType.IsEnum)
{
throw new ArgumentException(SR.Arg_MustBeEnum, nameof(enumType));
}
if (value == null)
{
parseResult.SetFailure(ParseFailureKind.ArgumentNull, nameof(value));
return(false);
}
int firstNonWhitespaceIndex = -1;
for (int i = 0; i < value.Length; i++)
{
if (!Char.IsWhiteSpace(value[i]))
{
firstNonWhitespaceIndex = i;
break;
}
}
if (firstNonWhitespaceIndex == -1)
{
parseResult.SetFailure(ParseFailureKind.Argument, nameof(SR.Arg_MustContainEnumInfo), null);
return(false);
}
// We have 2 code paths here. One if they are values else if they are Strings.
// values will have the first character as as number or a sign.
ulong result = 0;
char firstNonWhitespaceChar = value[firstNonWhitespaceIndex];
if (Char.IsDigit(firstNonWhitespaceChar) || firstNonWhitespaceChar == '-' || firstNonWhitespaceChar == '+')
{
Type underlyingType = GetUnderlyingType(enumType);
Object temp;
try
{
value = value.Trim();
temp = Convert.ChangeType(value, underlyingType, CultureInfo.InvariantCulture);
parseResult.parsedEnum = ToObject(enumType, temp);
return(true);
}
catch (FormatException)
{ // We need to Parse this as a String instead. There are cases
// when you tlbimp enums that can have values of the form "3D".
// Don't fix this code.
}
catch (Exception ex)
{
if (parseResult.canThrow)
{
throw;
}
else
{
parseResult.SetFailure(ex);
return(false);
}
}
}
// Find the field. Let's assume that these are always static classes
// because the class is an enum.
TypeValuesAndNames entry = GetCachedValuesAndNames(rtType, true);
String[] enumNames = entry.Names;
ulong[] enumValues = entry.Values;
StringComparison comparison = ignoreCase ?
StringComparison.OrdinalIgnoreCase :
StringComparison.Ordinal;
int valueIndex = firstNonWhitespaceIndex;
while (valueIndex <= value.Length) // '=' is to handle invalid case of an ending comma
{
// Find the next separator, if there is one, otherwise the end of the string.
int endIndex = value.IndexOf(enumSeparatorChar, valueIndex);
if (endIndex == -1)
{
endIndex = value.Length;
}
// Shift the starting and ending indices to eliminate whitespace
int endIndexNoWhitespace = endIndex;
while (valueIndex < endIndex && Char.IsWhiteSpace(value[valueIndex]))
{
valueIndex++;
}
while (endIndexNoWhitespace > valueIndex && Char.IsWhiteSpace(value[endIndexNoWhitespace - 1]))
{
endIndexNoWhitespace--;
}
int valueSubstringLength = endIndexNoWhitespace - valueIndex;
// Try to match this substring against each enum name
bool success = false;
for (int i = 0; i < enumNames.Length; i++)
{
if (enumNames[i].Length == valueSubstringLength &&
string.Compare(enumNames[i], 0, value, valueIndex, valueSubstringLength, comparison) == 0)
{
result |= enumValues[i];
success = true;
break;
}
}
// If we couldn't find a match, throw an argument exception.
if (!success)
{
// Not found, throw an argument exception.
parseResult.SetFailure(ParseFailureKind.ArgumentWithParameter, nameof(SR.Arg_EnumValueNotFound), value);
return(false);
}
// Move our pointer to the ending index to go again.
valueIndex = endIndex + 1;
}
try
{
parseResult.parsedEnum = ToObject(enumType, result);
return(true);
}
catch (Exception ex)
{
if (parseResult.canThrow)
{
throw;
}
else
{
parseResult.SetFailure(ex);
return(false);
}
}
}
// Ported from the C version in mono_reflection_parse_type ()
static ParsedName ParseName(string name, bool recursed, int pos, out int end_pos)
{
end_pos = 0;
while (pos < name.Length && name [pos] == ' ')
{
pos++;
}
var res = new ParsedName()
{
Names = new List <string> ()
};
int start = pos;
int name_start = pos;
bool in_modifiers = false;
while (pos < name.Length)
{
switch (name [pos])
{
case '+':
res.Names.Add(name.Substring(name_start, pos - name_start));
name_start = pos + 1;
break;
case '\\':
pos++;
break;
case '&':
case '*':
case '[':
case ',':
case ']':
in_modifiers = true;
break;
default:
break;
}
if (in_modifiers)
{
break;
}
pos++;
}
if (res.Names.Count == 0)
{
res.Names.Add(name.Substring(name_start, pos - name_start));
}
bool isbyref = false;
bool isptr = false;
int rank = -1;
bool end = false;
while (pos < name.Length && !end)
{
switch (name [pos])
{
case '&':
if (isbyref)
{
return(null);
}
pos++;
isbyref = true;
isptr = false;
if (res.Modifiers == null)
{
res.Modifiers = new List <int> ();
}
res.Modifiers.Add(0);
break;
case '*':
if (isbyref)
{
return(null);
}
pos++;
if (res.Modifiers == null)
{
res.Modifiers = new List <int> ();
}
res.Modifiers.Add(-1);
isptr = true;
break;
case '[':
// An array or generic arguments
if (isbyref)
{
return(null);
}
pos++;
if (pos == name.Length)
{
return(null);
}
if (name [pos] == ',' || name [pos] == '*' || name [pos] == ']')
{
// Array
bool bounded = false;
isptr = false;
rank = 1;
while (pos < name.Length)
{
if (name [pos] == ']')
{
break;
}
if (name [pos] == ',')
{
rank++;
}
else if (name [pos] == '*') /* '*' means unknown lower bound */
{
bounded = true;
}
else
{
return(null);
}
pos++;
}
if (pos == name.Length)
{
return(null);
}
if (name [pos] != ']')
{
return(null);
}
pos++;
/* bounded only allowed when rank == 1 */
if (bounded && rank > 1)
{
return(null);
}
/* n.b. bounded needs both modifiers: -2 == bounded, 1 == rank 1 array */
if (res.Modifiers == null)
{
res.Modifiers = new List <int> ();
}
if (bounded)
{
res.Modifiers.Add(-2);
}
res.Modifiers.Add(rank);
}
else
{
// Generic args
if (rank > 0 || isptr)
{
return(null);
}
isptr = false;
res.TypeArguments = new List <ParsedName> ();
while (pos < name.Length)
{
while (pos < name.Length && name [pos] == ' ')
{
pos++;
}
bool fqname = false;
if (pos < name.Length && name [pos] == '[')
{
pos++;
fqname = true;
}
var arg = ParseName(name, true, pos, out pos);
if (arg == null)
{
return(null);
}
res.TypeArguments.Add(arg);
/*MS is lenient on [] delimited parameters that aren't fqn - and F# uses them.*/
if (fqname && pos < name.Length && name [pos] != ']')
{
if (name [pos] != ',')
{
return(null);
}
pos++;
int aname_start = pos;
while (pos < name.Length && name [pos] != ']')
{
pos++;
}
if (pos == name.Length)
{
return(null);
}
while (Char.IsWhiteSpace(name [aname_start]))
{
aname_start++;
}
if (aname_start == pos)
{
return(null);
}
arg.AssemblyName = name.Substring(aname_start, pos - aname_start);
pos++;
}
else if (fqname && pos < name.Length && name [pos] == ']')
{
pos++;
}
if (pos < name.Length && name [pos] == ']')
{
pos++;
break;
}
else if (pos == name.Length)
{
return(null);
}
pos++;
}
}
break;
case ']':
if (recursed)
{
end = true;
break;
}
return(null);
case ',':
if (recursed)
{
end = true;
break;
}
pos++;
while (pos < name.Length && Char.IsWhiteSpace(name [pos]))
{
pos++;
}
if (pos == name.Length)
{
return(null);
}
res.AssemblyName = name.Substring(pos);
end = true;
break;
default:
return(null);
}
if (end)
{
break;
}
}
end_pos = pos;
return(res);
}
private static string stripStyles(string s, NumberStyles style, NumberFormatInfo nfi,
out int decPos, out bool isNegative, out bool expFlag, out int exp, bool throwex)
{
isNegative = false;
expFlag = false;
exp = 0;
decPos = -1;
bool hasSign = false;
bool hasOpeningParentheses = false;
bool hasDecimalPoint = false;
bool allowedLeadingWhiteSpace = ((style & NumberStyles.AllowLeadingWhite) != 0);
bool allowedTrailingWhiteSpace = ((style & NumberStyles.AllowTrailingWhite) != 0);
bool allowedLeadingSign = ((style & NumberStyles.AllowLeadingSign) != 0);
bool allowedTrailingSign = ((style & NumberStyles.AllowTrailingSign) != 0);
bool allowedParentheses = ((style & NumberStyles.AllowParentheses) != 0);
bool allowedThousands = ((style & NumberStyles.AllowThousands) != 0);
bool allowedDecimalPoint = ((style & NumberStyles.AllowDecimalPoint) != 0);
bool allowedExponent = ((style & NumberStyles.AllowExponent) != 0);
/* get rid of currency symbol */
bool hasCurrency = false;
if ((style & NumberStyles.AllowCurrencySymbol) != 0)
{
int index = s.IndexOf(nfi.CurrencySymbol);
if (index >= 0)
{
s = s.Remove(index, nfi.CurrencySymbol.Length);
hasCurrency = true;
}
}
string decimalSep = (hasCurrency) ? nfi.CurrencyDecimalSeparator : nfi.NumberDecimalSeparator;
string groupSep = (hasCurrency) ? nfi.CurrencyGroupSeparator : nfi.NumberGroupSeparator;
int pos = 0;
int len = s.Length;
StringBuilder sb = new StringBuilder(len);
// leading
while (pos < len)
{
char ch = s[pos];
if (Char.IsDigit(ch))
{
break; // end of leading
}
else if (allowedLeadingWhiteSpace && Char.IsWhiteSpace(ch))
{
pos++;
}
else if (allowedParentheses && ch == '(' && !hasSign && !hasOpeningParentheses)
{
hasOpeningParentheses = true;
hasSign = true;
isNegative = true;
pos++;
}
else if (allowedLeadingSign && ch == nfi.NegativeSign[0] && !hasSign)
{
int slen = nfi.NegativeSign.Length;
if (slen == 1 || s.IndexOf(nfi.NegativeSign, pos, slen) == pos)
{
hasSign = true;
isNegative = true;
pos += slen;
}
}
else if (allowedLeadingSign && ch == nfi.PositiveSign[0] && !hasSign)
{
int slen = nfi.PositiveSign.Length;
if (slen == 1 || s.IndexOf(nfi.PositiveSign, pos, slen) == pos)
{
hasSign = true;
pos += slen;
}
}
else if (allowedDecimalPoint && ch == decimalSep[0])
{
int slen = decimalSep.Length;
if (slen != 1 && s.IndexOf(decimalSep, pos, slen) != pos)
{
if (throwex)
{
ThrowAtPos(pos);
}
else
{
return(null);
}
}
break;
}
else
{
if (throwex)
{
ThrowAtPos(pos);
}
else
{
return(null);
}
}
}
if (pos == len)
{
if (throwex)
{
throw new FormatException(Locale.GetText("No digits found"));
}
else
{
return(null);
}
}
// digits
while (pos < len)
{
char ch = s[pos];
if (Char.IsDigit(ch))
{
sb.Append(ch);
pos++;
}
else if (allowedThousands && ch == groupSep[0])
{
int slen = groupSep.Length;
if (slen != 1 && s.IndexOf(groupSep, pos, slen) != pos)
{
if (throwex)
{
ThrowAtPos(pos);
}
else
{
return(null);
}
}
pos += slen;
}
else if (allowedDecimalPoint && ch == decimalSep[0] && !hasDecimalPoint)
{
int slen = decimalSep.Length;
if (slen == 1 || s.IndexOf(decimalSep, pos, slen) == pos)
{
decPos = sb.Length;
hasDecimalPoint = true;
pos += slen;
}
}
else
{
break;
}
}
// exponent
if (pos < len)
{
char ch = s[pos];
if (allowedExponent && Char.ToUpperInvariant(ch) == 'E')
{
expFlag = true;
pos++;
if (pos >= len)
{
if (throwex)
{
ThrowInvalidExp();
}
else
{
return(null);
}
}
ch = s[pos];
bool isNegativeExp = false;
if (ch == nfi.PositiveSign[0])
{
int slen = nfi.PositiveSign.Length;
if (slen == 1 || s.IndexOf(nfi.PositiveSign, pos, slen) == pos)
{
pos += slen;
if (pos >= len)
{
if (throwex)
{
ThrowInvalidExp();
}
else
{
return(null);
}
}
}
}
else if (ch == nfi.NegativeSign[0])
{
int slen = nfi.NegativeSign.Length;
if (slen == 1 || s.IndexOf(nfi.NegativeSign, pos, slen) == pos)
{
pos += slen;
if (pos >= len)
{
if (throwex)
{
ThrowInvalidExp();
}
else
{
return(null);
}
}
isNegativeExp = true;
}
}
ch = s[pos];
if (!Char.IsDigit(ch))
{
if (throwex)
{
ThrowInvalidExp();
}
else
{
return(null);
}
}
exp = ch - '0';
pos++;
while (pos < len && Char.IsDigit(s[pos]))
{
exp *= 10;
exp += s[pos] - '0';
pos++;
}
if (isNegativeExp)
{
exp *= -1;
}
}
}
// trailing
while (pos < len)
{
char ch = s[pos];
if (allowedTrailingWhiteSpace && Char.IsWhiteSpace(ch))
{
pos++;
}
else if (allowedParentheses && ch == ')' && hasOpeningParentheses)
{
hasOpeningParentheses = false;
pos++;
}
else if (allowedTrailingSign && ch == nfi.NegativeSign[0] && !hasSign)
{
int slen = nfi.NegativeSign.Length;
if (slen == 1 || s.IndexOf(nfi.NegativeSign, pos, slen) == pos)
{
hasSign = true;
isNegative = true;
pos += slen;
}
}
else if (allowedTrailingSign && ch == nfi.PositiveSign[0] && !hasSign)
{
int slen = nfi.PositiveSign.Length;
if (slen == 1 || s.IndexOf(nfi.PositiveSign, pos, slen) == pos)
{
hasSign = true;
pos += slen;
}
}
else
{
if (throwex)
{
ThrowAtPos(pos);
}
else
{
return(null);
}
}
}
if (hasOpeningParentheses)
{
if (throwex)
{
throw new FormatException(Locale.GetText("Closing Parentheses not found"));
}
else
{
return(null);
}
}
if (!hasDecimalPoint)
{
decPos = sb.Length;
}
return(sb.ToString());
}
// 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 = 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 = 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 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, 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 = IntParser.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');
ulong v = ((ulong)val) * 10 + d;
if (v > MaxValue)
{
if (!tryParse)
{
exc = IntParser.GetOverflowException();
}
return(false);
}
val = (uint)v;
digits_seen = true;
}
else
{
if (Char.IsWhiteSpace(c))
{
for (i++; i < len; i++)
{
if (!Char.IsWhiteSpace(s[i]))
{
if (!tryParse)
{
exc = IntParser.GetFormatException();
}
return(false);
}
}
break;
}
else
{
if (!tryParse)
{
exc = IntParser.GetFormatException();
}
return(false);
}
}
}
if (!digits_seen)
{
if (!tryParse)
{
exc = IntParser.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);
}
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);
}
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);
}
