public BooleanExpression ParseFilter(string text, out IReadOnlyList <SqlParserError> errors)
{
ICharStream stream = CharStreams.fromstring(text);
stream = new CaseChangingCharStream(stream);
ITokenSource lexer = new KoraliumLexer(stream);
ITokenStream tokens = new CommonTokenStream(lexer);
KoraliumParser parser = new KoraliumParser(tokens)
{
BuildParseTree = true
};
var errorsListener = new AntlrErrorListener();
parser.AddErrorListener(errorsListener);
var booleanExpression = parser.boolean_expression();
errors = errorsListener.Errors;
if (errors.Count > 0)
{
return(null);
}
var visitor = new AntlrVisitor();
var result = visitor.Visit(booleanExpression) as BooleanExpression;
return(result);
}
public StatementList Parse(string text, out IReadOnlyList <SqlParserError> errors)
{
ICharStream stream = CharStreams.fromstring(text);
stream = new CaseChangingCharStream(stream);
ITokenSource lexer = new KoraliumLexer(stream);
ITokenStream tokens = new CommonTokenStream(lexer);
KoraliumParser parser = new KoraliumParser(tokens)
{
BuildParseTree = true
};
var errorsListener = new AntlrErrorListener();
parser.AddErrorListener(errorsListener);
var stmnt = parser.statements_list();
errors = errorsListener.Errors;
if (errors.Count > 0)
{
return(new StatementList());
}
var visitor = new AntlrVisitor();
var statements = visitor.Visit(stmnt) as List <Statement>;
return(new StatementList()
{
Statements = statements
});
}
