public static PatternCode Scan(string code)
{
PatternCode lPatternCode = new PatternCode();
int lPosition = 0;
PatternToken lPreviousToken = PatternToken.UNKNOWN;
// tokenize code
while (lPosition < code.Length)
{
string lTokenString = ReadTokenString(code, ref lPosition);
PatternToken lToken = GetToken(lTokenString, lPreviousToken);
// "*" could also be a variable
if ((lToken == PatternToken.MULTIPLY) && (lPreviousToken == PatternToken.COMMA || lPreviousToken == PatternToken.OPEN_PARA))
{
lToken = PatternToken.VARIABLE;
}
int lParameterCount = (lToken == PatternToken.FUNCTION) ? GetParameterCount(code, lPosition) : 0;
PatternOperand patternOperand = new PatternOperand(lToken, lTokenString, lParameterCount);
if (lToken == PatternToken.UNKNOWN)
{
lPatternCode.SetErrorMessage("Unknown Token: " + lTokenString.ToString());
return(lPatternCode);
}
lPatternCode.Add(patternOperand);
lPreviousToken = lToken;
}
return(lPatternCode);
}
public static PatternCode Compile(Pattern pattern)
{
PatternCode lPatternCode = PatternScanner.Scan(pattern.PatternSourceCode);
if (!lPatternCode.IsError())
{
PatternSyntax lPatternSyntax = new PatternSyntax(lPatternCode);
if (!lPatternSyntax.SyntaxCheck())
{
lPatternCode.SetErrorMessage(lPatternSyntax);
return(lPatternCode);
}
}
return(lPatternCode);
}
public static PatternCode Scan(string code)
{
PatternCode lPatternCode = new PatternCode();
int lPosition = 0;
PatternToken lPreviousToken = PatternToken.UNKNOWN;
// tokenize code
while (lPosition < code.Length)
{
string lTokenString = ReadTokenString(code, ref lPosition);
PatternToken lToken = GetToken(lTokenString, lPreviousToken);
// "*" could also be a variable
if ((lToken == PatternToken.MULTIPLY) && (lPreviousToken == PatternToken.COMMA || lPreviousToken == PatternToken.OPEN_PARA))
lToken = PatternToken.VARIABLE;
int lParameterCount = (lToken == PatternToken.FUNCTION) ? GetParameterCount(code, lPosition) : 0;
PatternOperand patternOperand = new PatternOperand(lToken, lTokenString, lParameterCount);
if (lToken == PatternToken.UNKNOWN)
{
lPatternCode.SetErrorMessage("Unknown Token: " + lTokenString.ToString());
return lPatternCode;
}
lPatternCode.Add(patternOperand);
lPreviousToken = lToken;
}
return lPatternCode;
}