public Questionnaire BuildAST(string inputString)
{
MemoryStream inputStream = new MemoryStream(Encoding.UTF8.GetBytes(inputString ?? ""));
AntlrInputStream antlrInputStream = new AntlrInputStream(inputStream);
QLLexer lexer = new QLLexer(antlrInputStream);
CommonTokenStream tokens = new CommonTokenStream(lexer);
_parser = new QLParser(tokens);
//Replaxe lexer/parser error listeners
lexer.RemoveErrorListeners();
_parser.RemoveErrorListeners();
lexer.AddErrorListener(new LexerErrorListener() { OnError = LexerErrors.Add });
_parser.AddErrorListener(new ParserErrorListener() { OnError = ParserErrors.Add });
//set manager on partial parser class
_parser.SetIdManager(Memory);
//build AST
_parseTree = _parser.questionnaire();
AST = _parser.GetAST();
//check for lexer/parser errors
if (!LexerErrors.Any() && !ParserErrors.Any())
{
TypeChecker.Run(AST);
}
return AST;
}
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 static QuestionForm ParseString(string input)
{
var errorHandler = new ParseErrorHandler();
var errorListener = new QLErrorListener(errorHandler);
var stream = CharStreams.fromstring(input);
var lexer = new QLLexer(stream);
lexer.RemoveErrorListeners();
lexer.AddErrorListener(errorListener);
ITokenStream tokens = new CommonTokenStream(lexer);
var parser = new QL(tokens);
parser.RemoveErrorListeners();
parser.AddErrorListener(errorListener);
var form = parser.form().result;
if (errorHandler.HasErrors)
{
errorHandler.ThrowParseException();
}
return(form);
}
public Questionnaire BuildAST(string inputString)
{
MemoryStream inputStream = new MemoryStream(Encoding.UTF8.GetBytes(inputString ?? ""));
AntlrInputStream antlrInputStream = new AntlrInputStream(inputStream);
QLLexer lexer = new QLLexer(antlrInputStream);
CommonTokenStream tokens = new CommonTokenStream(lexer);
_parser = new QLParser(tokens);
//Replaxe lexer/parser error listeners
lexer.RemoveErrorListeners();
_parser.RemoveErrorListeners();
lexer.AddErrorListener(new LexerErrorListener()
{
OnError = LexerErrors.Add
});
_parser.AddErrorListener(new ParserErrorListener()
{
OnError = ParserErrors.Add
});
//set manager on partial parser class
_parser.SetIdManager(Memory);
//build AST
_parseTree = _parser.questionnaire();
AST = _parser.GetAST();
//check for lexer/parser errors
if (!LexerErrors.Any() && !ParserErrors.Any())
{
TypeChecker.Run(AST);
}
return(AST);
}
private void btnParse_Click(object sender, EventArgs e)
{
txtOutput.Clear();
string inputString = txtInput.Text;
MemoryStream inputStream = new MemoryStream(Encoding.UTF8.GetBytes(inputString ?? ""));
AntlrInputStream input = new AntlrInputStream(inputStream);
QLLexer lexer = new QLLexer(input);
CommonTokenStream tokens = new CommonTokenStream(lexer);
QLParser parser = new QLParser(tokens);
lexer.RemoveErrorListeners();
parser.RemoveErrorListeners();
lexer.AddErrorListener(new LexerErrorListener(){OnError = WriteError});
parser.AddErrorListener(new ParserErrorListener(){OnError = WriteError});
IParseTree tree = parser.questionnaire();
//if (parser.NumberOfSyntaxErrors > 0)
// txtOutput.Text += string.Format("Parser errors found: {0}", parser.NumberOfSyntaxErrors);
QLVisitor visitor = new QLVisitor();
visitor.Visit(tree);
txtOutput.Text += string.Format(@"{0}{0} Generated parse tree:
{0} {1}
{0} {2}"
, Environment.NewLine
, tree.ToStringTree(parser)
, visitor.Visit(tree));
}