public IQsiTreeNode Parse(QsiScript script, CancellationToken cancellationToken = default)
{
var stream = new AntlrInputStream(script.Script);
var lexer = new CqlLexerInternal(stream);
var tokens = new CommonTokenStream(lexer);
var parser = new CqlParserInternal(tokens);
parser.AddErrorListener(new ErrorListener());
var statement = parser.cqlStatement().children[0];
switch (statement)
{
case SelectStatementContext selectStatement:
return(TableVisitor.VisitSelectStatement(selectStatement));
case CreateMaterializedViewStatementContext createMaterializedViewStatement:
return(DefinitionVisitor.VisitCreateMaterializedViewStatement(createMaterializedViewStatement));
case UseStatementContext useStatement:
return(ActionVisitor.VisitUseStatement(useStatement));
case InsertStatementContext insertStatement:
return(ActionVisitor.VisitInsertStatement(insertStatement));
case UpdateStatementContext updateStatement:
return(ActionVisitor.VisitUpdateStatement(updateStatement));
case DeleteStatementContext deleteStatement:
return(ActionVisitor.VisitDeleteStatement(deleteStatement));
default:
throw TreeHelper.NotSupportedTree(statement);
}
}
protected override (ITree Tree, string[] RuleNames) ParseAntlrTree(string input)
{
var stream = new AntlrInputStream(input);
var lexer = new CqlLexerInternal(stream);
var tokens = new CommonTokenStream(lexer);
var parser = new CqlParserInternal(tokens);
parser.AddErrorListener(new ErrorListener());
return(parser.root(), parser.RuleNames);
}
