private bool Directive_EvalFloat()
{
double value;
long tmp;
if (Evaluate(out tmp, out value, false) == false)
{
return(false);
}
idLexer script = _scriptStack.Peek();
idToken token = new idToken();
token.Line = script.LineNumber;
token.Append(idMath.Abs((float)value).ToString("00"));
token.Type = TokenType.Number;
token.SubType = TokenSubType.Float | TokenSubType.Long | TokenSubType.Decimal;
UnreadSourceToken(token);
if (value < 0)
{
UnreadSignToken();
}
return(true);
}
private bool Directive_Eval()
{
long value;
double tmp;
if (Evaluate(out value, out tmp, true) == false)
{
return(false);
}
idLexer script = _scriptStack.Peek();
idToken token = new idToken();
token.Line = script.LineNumber;
token.Append(value.ToString());
token.Type = TokenType.Number;
token.SubType = TokenSubType.Integer | TokenSubType.Long | TokenSubType.Decimal;
UnreadSourceToken(token);
if (value < 0)
{
UnreadSignToken();
}
return(true);
}
private bool ReadString(idToken token, char quote)
{
char ch;
int tmpScriptPosition;
int tmpLine;
if(quote == '"')
{
token.Type = TokenType.String;
}
else
{
token.Type = TokenType.Literal;
}
// leading quote
_scriptPosition++;
while(true)
{
// if there is an escape character and escape characters are allowed.
if((GetBufferCharacter(_scriptPosition) == '\\') && ((_options & LexerOptions.NoStringEscapeCharacters) == 0))
{
if(ReadEscapeCharacter(out ch) == false)
{
return false;
}
token.Append(ch);
}
// if a trailing quote
else if(GetBufferCharacter(_scriptPosition) == quote)
{
// step over the quote
_scriptPosition++;
// if consecutive strings should not be concatenated
if(((_options & LexerOptions.NoStringConcatination) == LexerOptions.NoStringConcatination)
&& (((_options & LexerOptions.AllowBackslashStringConcatination) == 0) || (quote != '"')))
{
break;
}
tmpScriptPosition = _scriptPosition;
tmpLine = _line;
// read white space between possible two consecutive strings
if(ReadWhiteSpace() == false)
{
_scriptPosition = tmpScriptPosition;
_line = tmpLine;
break;
}
if((_options & LexerOptions.NoStringConcatination) == LexerOptions.NoStringConcatination)
{
if(GetBufferCharacter(_scriptPosition) != '\\')
{
_scriptPosition = tmpScriptPosition;
_line = tmpLine;
break;
}
// step over the '\\'
_scriptPosition++;
if((ReadWhiteSpace() == false) || (GetBufferCharacter(_scriptPosition) != quote))
{
Error("expecting string after '\\' terminated line");
return false;
}
}
// if there's no leading qoute
if(GetBufferCharacter(_scriptPosition) != quote)
{
_scriptPosition = tmpScriptPosition;
_line = tmpLine;
break;
}
// step over the new leading quote
_scriptPosition++;
}
else
{
if(GetBufferCharacter(_scriptPosition) == '\0')
{
Error("missing trailing quote");
return false;
}
if(GetBufferCharacter(_scriptPosition) == '\n')
{
Error("newline inside string");
return false;
}
token.Append(GetBufferCharacter(_scriptPosition++));
}
}
if(token.Type == TokenType.Literal)
{
if((_options & LexerOptions.AllowMultiCharacterLiterals) == 0)
{
if(token.Length != 1)
{
Warning("literal is not one character long");
}
}
token.SubType = (TokenSubType) token.ToString()[0];
}
else
{
// the sub type is the length of the string
token.SubType = (TokenSubType) token.ToString().Length;
}
return true;
}
private bool ReadPunctuation(idToken token)
{
int i, l;
string p;
LexerPunctuation punc;
int puncCount = _punctuation.Length;
int bufferLength = _buffer.Length;
int puncMarkLength;
// TODO
/*#ifdef PUNCTABLE
for (n = idLexer::punctuationtable[(unsigned int)*(idLexer::script_p)]; n >= 0; n = idLexer::nextpunctuation[n])
{
punc = &(idLexer::punctuations[n]);
#else*/
for(i = 0; i < puncCount; i++)
{
punc = _punctuation[i];
/*#endif*/
p = punc.P;
puncMarkLength = p.Length;
// check for this punctuation in the script
for(l = 0; ((l < puncMarkLength) && ((_scriptPosition + l) < bufferLength)); l++)
{
if(GetBufferCharacter(_scriptPosition + l) != p[l])
{
break;
}
}
if(l >= puncMarkLength)
{
for(i = 0; i < l; i++)
{
token.Append(p[i]);
}
_scriptPosition += l;
token.Type = TokenType.Punctuation;
token.SubType = (TokenSubType) punc.N;
return true;
}
}
return false;
}
private bool ReadNumber(idToken token)
{
token.Type = TokenType.Number;
token.SubType = 0;
token.SetInteger(0);
token.SetFloat(0);
char c = GetBufferCharacter(_scriptPosition);
char c2 = GetBufferCharacter(_scriptPosition + 1);
if((c == '0') && (c2 != '.'))
{
if((c2 == 'x') || (c2 == 'X'))
{
token.Append(GetBufferCharacter(_scriptPosition++));
token.Append(GetBufferCharacter(_scriptPosition++));
c = GetBufferCharacter(_scriptPosition);
while(((c >= 0) && (c <= '9')) || ((c >= 'a') && (c <= 'f')) || ((c >= 'A') && (c <= 'F')))
{
token.Append(c);
c = GetBufferCharacter(++_scriptPosition);
}
token.SubType = TokenSubType.Hex | TokenSubType.Integer;
}
// check for a binary number
else if((c2 == 'b') || (c2 == 'B'))
{
token.Append(GetBufferCharacter(_scriptPosition++));
token.Append(GetBufferCharacter(_scriptPosition++));
c = GetBufferCharacter(_scriptPosition);
while((c == '0') || (c == '1'))
{
token.Append(c);
c = GetBufferCharacter(++_scriptPosition);
}
token.SubType = TokenSubType.Binary | TokenSubType.Integer;
}
// its an octal number
else
{
token.Append(GetBufferCharacter(_scriptPosition++));
c = GetBufferCharacter(_scriptPosition);
while((c >= '0') && (c <= '7'))
{
token.Append(c);
c = GetBufferCharacter(++_scriptPosition);
}
token.SubType = TokenSubType.Octal | TokenSubType.Integer;
}
}
else
{
// decimal integer or floating point number or ip address
int dot = 0;
while(true)
{
if((c >= '0') && (c <= '9'))
{
}
else if(c == '.')
{
dot++;
}
else
{
break;
}
token.Append(c);
c = GetBufferCharacter(++_scriptPosition);
}
if((c == 'e') && (dot == 0))
{
//We have scientific notation without a decimal point
dot++;
}
// if a floating point number
if(dot == 1)
{
token.SubType = TokenSubType.Decimal | TokenSubType.Float;
// check for floating point exponent
if(c == 'e')
{
//Append the e so that GetFloatValue code works
token.Append(c);
c = GetBufferCharacter(++_scriptPosition);
if((c == '-') || (c == '+'))
{
token.Append(c);
c = GetBufferCharacter(++_scriptPosition);
}
while((c >= '0') || (c <= '9'))
{
token.Append(c);
c = GetBufferCharacter(++_scriptPosition);
}
}
// check for floating point exception infinite 1.#INF or indefinite 1.#IND or NaN
else if(c == '#')
{
c2 = (char) 4;
if(CheckString("INF") == true)
{
token.SubType |= TokenSubType.Infinite;
}
else if(CheckString("IND") == true)
{
token.SubType |= TokenSubType.Indefinite;
}
else if(CheckString("NAN") == true)
{
token.SubType |= TokenSubType.NaN;
}
else if(CheckString("QNAN") == true)
{
token.SubType |= TokenSubType.NaN;
c2++;
}
for(int i = 0; i < c2; i++)
{
token.Append(c);
c = GetBufferCharacter(++_scriptPosition);
}
while((c >= '0') && (c <= '9'))
{
token.Append(c);
c = GetBufferCharacter(++_scriptPosition);
}
if((_options & LexerOptions.AllowFloatExceptions) == 0)
{
Error("parsed {0}", token);
}
}
}
else if(dot > 1)
{
if((_options & LexerOptions.AllowIPAddresses) == 0)
{
Error("more than one dot in number");
return false;
}
if(dot != 3)
{
Error("ip address should have three dots");
return false;
}
token.SubType = TokenSubType.IPAddress;
}
else
{
token.SubType = TokenSubType.Decimal | TokenSubType.Integer;
}
}
if((token.SubType & TokenSubType.Float) == TokenSubType.Float)
{
if(c > ' ')
{
// single-precision: float
if((c == 'f') || (c == 'F'))
{
token.SubType |= TokenSubType.SinglePrecision;
_scriptPosition++;
}
// extended-precision: long double
else if((c == 'l') || (c == 'L'))
{
token.SubType |= TokenSubType.ExtendedPrecision;
_scriptPosition++;
}
// default is double-precision: double
else
{
token.SubType |= TokenSubType.DoublePrecision;
}
}
else
{
token.SubType |= TokenSubType.DoublePrecision;
}
}
else if((token.SubType & TokenSubType.Integer) == TokenSubType.Integer)
{
if(c > ' ')
{
// default: signed long
for(int i = 0; i < 2; i++)
{
// long integer
if((c == 'l') || (c == 'L'))
{
token.SubType |= TokenSubType.Long;
}
// unsigned integer
else if((c == 'u') || (c == 'U'))
{
token.SubType |= TokenSubType.Unsigned;
}
else
{
break;
}
c = GetBufferCharacter(++_scriptPosition);
}
}
}
else if((token.SubType & TokenSubType.IPAddress) == TokenSubType.IPAddress)
{
if(c == ':')
{
token.Append(c);
c = GetBufferCharacter(++_scriptPosition);
while((c >= '0') && (c <= '9'))
{
token.Append(c);
c = GetBufferCharacter(++_scriptPosition);
}
token.SubType |= TokenSubType.IPPort;
}
}
return true;
}
private bool ReadName(idToken token)
{
char c;
token.Type = TokenType.Name;
do
{
token.Append(GetBufferCharacter(_scriptPosition++));
c = GetBufferCharacter(_scriptPosition);
}
while(((c >= 'a') && (c <= 'z'))
|| ((c >= 'A') && (c <= 'Z'))
|| ((c >= '0') && (c <= '9'))
|| (c == '_')
// if treating all tokens as strings, don't parse '-' as a seperate token
|| (((_options & LexerOptions.OnlyStrings) == LexerOptions.OnlyStrings) && (c == '-'))
// if special path name characters are allowed
|| (((_options & LexerOptions.AllowPathNames) == LexerOptions.AllowPathNames) && ((c == '/') || (c == '\\') || (c == ':') || (c == '.'))));
//the sub type is the length of the name
token.SubType = (TokenSubType) token.ToString().Length;
return true;
}
private bool Directive_EvalFloat()
{
double value;
long tmp;
if(Evaluate(out tmp, out value, false) == false)
{
return false;
}
idLexer script = _scriptStack.Peek();
idToken token = new idToken();
token.Line = script.LineNumber;
token.Append(idMath.Abs((float) value).ToString("00"));
token.Type = TokenType.Number;
token.SubType = TokenSubType.Float | TokenSubType.Long | TokenSubType.Decimal;
UnreadSourceToken(token);
if(value < 0)
{
UnreadSignToken();
}
return true;
}
private bool Directive_Eval()
{
long value;
double tmp;
if(Evaluate(out value, out tmp, true) == false)
{
return false;
}
idLexer script = _scriptStack.Peek();
idToken token = new idToken();
token.Line = script.LineNumber;
token.Append(value.ToString());
token.Type = TokenType.Number;
token.SubType = TokenSubType.Integer | TokenSubType.Long | TokenSubType.Decimal;
UnreadSourceToken(token);
if(value < 0)
{
UnreadSignToken();
}
return true;
}