public IQsiTreeNode Parse(QsiScript script, CancellationToken cancellationToken = default)
{
var stream = new AntlrInputStream(script.Script);
var lexer = new HanaLexerInternal(stream);
var tokens = new CommonTokenStream(lexer);
var parser = new HanaParserInternal(tokens);
parser.AddErrorListener(new ErrorListener());
var statement = parser.hanaStatement();
switch (statement.children[0])
{
case DataManipulationStatementContext dataManipulationStatement:
return(ParseDataManipulationStatement(dataManipulationStatement));
case DataDefinitionStatementContext dataDefinitionStatement:
return(ParseDataDefinitionStatementStatement(dataDefinitionStatement));
case SessionManagementStatementContext sessionManagementStatement:
return(ParseSessionManagementStatement(sessionManagementStatement));
default:
throw TreeHelper.NotSupportedTree(statement.children[0]);
}
}
protected override (ITree Tree, string[] RuleNames) ParseAntlrTree(string input)
{
var stream = new AntlrInputStream(input);
var lexer = new HanaLexerInternal(stream);
var tokens = new CommonTokenStream(lexer);
var parser = new HanaParserInternal(tokens);
parser.AddErrorListener(new ErrorListener());
return(parser.root(), parser.RuleNames);
}
