public LanguageData(Grammar grammar)
{
Grammar = grammar;
GrammarData = new GrammarData(this);
ParserData = new ParserData(this);
ScannerData = new ScannerData(this);
ConstructAll();
}
public LanguageData(Grammar grammar, bool construct = true)
{
Grammar = grammar;
GrammarData = new GrammarData(this);
ParserData = new ParserData(this);
ScannerData = new ScannerData(this);
if (construct)
{
ConstructAll();
}
}
public Scanner(Parser parser)
{
Parser = parser;
Data = parser.Language.ScannerData;
_grammar = parser.Language.Grammar;
//create token streams
var tokenStream = GetUnfilteredTokens();
//chain all token filters
Context.TokenFilters.Clear();
_grammar.CreateTokenFilters(Data.Language, Context.TokenFilters);
foreach (TokenFilter filter in Context.TokenFilters)
{
tokenStream = filter.BeginFiltering(Context, tokenStream);
}
Context.FilteredTokens = tokenStream.GetEnumerator();
}
private int _nextNewLinePosition = -1; //private field to cache position of next \n character
public SourceStream(ScannerData scannerData, int tabWidth)
{
_scannerData = scannerData;
TabWidth = tabWidth;
}
