public bool Execute(DataContext context)
{
QLLexer lexer = new QLLexer(context.AntlrInput);
lexer.AddErrorListener(new LexerErrorHandler(context.ASTHandlerExceptions));
CommonTokenStream tokens = new CommonTokenStream(lexer);
QLParser parser = new QLParser(tokens);
parser.AddErrorListener(new ParserErrorHandler(context.ASTHandlerExceptions));
QLListener listener = new QLListener(context.ASTHandlerExceptions);
parser.AddParseListener(listener);
// commence parsing the input as a formBlock since it's supposed to be the entry point of the input file
parser.formBlock();
context.RootNode = listener.GetAstRootNode();
return !context.ASTHandlerExceptions.Any();
}
public bool Execute(DataContext context)
{
QLLexer lexer = new QLLexer(context.AntlrInput);
lexer.AddErrorListener(new LexerErrorHandler(context.ASTHandlerExceptions));
CommonTokenStream tokens = new CommonTokenStream(lexer);
QLParser parser = new QLParser(tokens);
parser.AddErrorListener(new ParserErrorHandler(context.ASTHandlerExceptions));
QLListener listener = new QLListener(context.ASTHandlerExceptions);
parser.AddParseListener(listener);
// commence parsing the input as a formBlock since it's supposed to be the entry point of the input file
parser.formBlock();
context.RootNode = listener.GetAstRootNode();
return(!context.ASTHandlerExceptions.Any());
}
private Reference <T> BuildAstTree <T>(string definition) where T : IAstNode
{
var stream = new AntlrInputStream(definition);
var lexer = new QLLexer(stream);
lexer.RemoveErrorListeners();
lexer.AddErrorListener(new QlErrorListener());
var tokens = new CommonTokenStream(lexer);
var parser = new QLParser(tokens);
parser.RemoveErrorListeners();
parser.AddErrorListener(new QlErrorListener());
var tree = parser.questionnaire();
var qlVisitor = new BuildAstVisitor(m_astFactory, m_domainItemLocator);
return(qlVisitor.Visit(tree).To <T>(m_domainItemLocator));
}
public ParsingTask Process(ParsingTask input)
{
if (string.IsNullOrEmpty(input.ParsingInput))
{
input.Errors.Add("Input string is empty");
_canContinue = false;
return(input);
}
QLParser parser = SetupParser(input.ParsingInput);
var errorListener = new ErrorListener();
parser.AddErrorListener(errorListener);
var visitor = new ParseTreeVisitor(new OperatorFactory(new ValueFactory()));
input.Ast = visitor.Visit(parser.form());
errorListener.Errors.ForEach(x => input.Errors.Add(x));
_canContinue = !errorListener.Errors.Any();
return(input);
}
private void AddErrorListener(QLParser parser)
{
parser.RemoveErrorListeners();
parser.AddErrorListener(new AntlrErrorListener(Messages));
}