private QuotedParameterParserResult GetNextComplexString(string Input, char StartEndChar, int startPos)
{
// Define return-value / vars
QuotedParameterParserResult returnValue = new QuotedParameterParserResult();
returnValue.RemovedChars = 0;
returnValue.Result = "";
bool addNextDirect = false;
int unescapedQuotes = 0;
for (int i = 0; i < Input.Length; i++)
{
if (addNextDirect)
{
returnValue.Result += Input[i];
addNextDirect = false;
continue;
}
if (Input[i] == StartEndChar)
{
unescapedQuotes++;
}
if (Input[i] == '\\')
{
// This char will not be added to the result
returnValue.RemovedChars++;
addNextDirect = true;
continue;
}
returnValue.Result += Input[i];
// Leave if all unescaped quoates are closed
if (unescapedQuotes == 2)
{
returnValue.Result = returnValue.Result.Substring(0, (i - returnValue.RemovedChars) + 1);
break;
}
}
if (unescapedQuotes % 2 != 0)
{
errorListener.Error("Expected close token: " + StartEndChar.ToString(), -1, startPos, 1);
}
return(returnValue);
}
/// <summary>
/// Parse script into tokens
/// </summary>
/// <param name="Code"></param>
public void Parse(string Code)
{
string lastToken = "";
bool lastTokenIsSeperator = false;
for (int i = 0; i < Code.Length; i++)
{
char currentChar = Code[i];
// Add Seperators directly as a token
if (lexerConstants.TokenSeperator.Contains(currentChar))
{
if (lastToken.Trim() != "")
{
tokens.PushBack(new RawToken(lastToken.Trim(), null, new Tuple <int, int>(i - lastToken.Trim().Length, i)));
lastToken = "";
}
if (currentChar != ' ')
{
string toEnqueu = currentChar.ToString();
// Make from two seperate tokens (> =) one token >=
if (lastTokenIsSeperator == true)
{
if (tokens.Count != 0)
{
RawToken lastTokenChar = tokens.PeekLast();
foreach (string fol in lexerConstants.FollowingTokens)
{
if ((lastTokenChar.Content + currentChar) == fol)
{
tokens.PopLast();
toEnqueu = fol;
break;
}
}
}
}
// Single-Line comment
if (lexerConstants.SingleLineComment == toEnqueu)
{
string commentString = "";
for (i = i - (i > 0 ? 1 : 0); i < Code.Length; i++)
{
commentString += Code[i];
if (commentString.EndsWith(Environment.NewLine))
{
break;
}
}
lastToken = "";
}
// Multiline comment
else if (lexerConstants.StartMultilineComment == toEnqueu)
{
string commentString = "";
bool commentClosed = false;
for (i = i - 1; i < Code.Length; i++)
{
commentString += Code[i];
if (commentString.EndsWith(lexerConstants.EndMultilineComment))
{
commentClosed = true;
break;
}
}
// Proof, wether the comment is closed
if (commentClosed == false)
{
errorListener.Error("Multiline comment not closed.", -1, i, i - 3);
}
lastToken = "";
}
else
{
tokens.PushBack(new RawToken(toEnqueu, null, new Tuple <int, int>((i + 1) - toEnqueu.Trim().Length, (i + 1))));
lastTokenIsSeperator = true;
}
}
}
else if (lexerConstants.ComplexToken.Contains(currentChar))
{
if (lastToken.Trim() != "")
{
tokens.PushBack(new RawToken(lastToken.Trim(), null, new Tuple <int, int>(i - lastToken.Trim().Length, i)));
lastToken = "";
}
// Get Brackets like quoated strings
QuotedParameterParserResult result = GetNextComplexString(Code.Substring(i, Code.Length - i), currentChar, i);
i += (result.Result.Length - 1) + result.RemovedChars;
tokens.PushBack(new RawToken(result.Result.Trim(), null, new Tuple <int, int>(i - ((result.Result.Length - 1) + result.RemovedChars), (i + 1))));
lastTokenIsSeperator = false;
}
else if (currentChar == '\t')
{
// Do nothing then
if (lastToken.Trim() != "")
{
tokens.PushBack(new RawToken(lastToken.Trim(), null, new Tuple <int, int>(i - lastToken.Trim().Length, i)));
lastToken = "";
}
}
else
{
lastToken += currentChar;
lastTokenIsSeperator = false;
}
}
if (lastToken.Trim().Length > 0)
{
tokens.PushBack(new RawToken(lastToken.Trim(), null, new Tuple <int, int>(Code.Length - lastToken.Trim().Length, Code.Length)));
}
}