protected override bool TryParseToken(CommonScriptCursor cursor, out Token token)
{
if (!base.TryParseToken(cursor, out token))
{
return(false);
}
if (token.Type is TokenType.MultiLineComment or TokenType.SingeLineComment)
{
var(offset, length) = token.Span.GetOffsetAndLength(cursor.Length);
ReadOnlySpan <char> span = cursor.Value.AsSpan(offset, length);
if (ImpalaUtility.IsCommentPlanHint(span))
{
token = new Token(TokenType.Fragment, token.Span);
}
}
return(true);
}
public IQsiTreeNode Parse(QsiScript script, CancellationToken cancellationToken = default)
{
var parser = ImpalaUtility.CreateParserInternal(
script.Script,
Dialect
);
var stmt = parser.root().stmt();
switch (stmt.children[0])
{
case Query_stmtContext queryStmt:
return(TableVisitor.VisitQueryStmt(queryStmt));
case Create_view_stmtContext createViewStmt:
return(ActionVisitor.VisitCreateViewStmt(createViewStmt));
case Create_tbl_as_select_stmtContext createTblAsSelectStmt:
return(ActionVisitor.VisitCreateTblAsSelectStmt(createTblAsSelectStmt));
case Use_stmtContext useStmt:
return(ActionVisitor.VisitUseStmt(useStmt));
case Upsert_stmtContext upsertStmt:
return(ActionVisitor.VisitUpsertStmt(upsertStmt));
case Update_stmtContext updateStmt:
return(ActionVisitor.VisitUpdateStmt(updateStmt));
case Insert_stmtContext insertStmt:
return(ActionVisitor.VisitInsertStmt(insertStmt));
case Delete_stmtContext deleteStmt:
return(ActionVisitor.VisitDeleteStmt(deleteStmt));
default:
throw TreeHelper.NotSupportedTree(stmt.children[0]);
}
}
protected bool IsCommentPlanHint()
{
return(ImpalaUtility.IsCommentPlanHint(Text));
}
public ImpalaLanguageService(Version version)
{
Dialect = ImpalaUtility.CreateDialect(version);
}
protected override (ITree Tree, string[] RuleNames) ParseAntlrTree(string input)
{
var parser = ImpalaUtility.CreateParserInternal(input, _dialect);
return(parser.root(), parser.RuleNames);
}
protected override IRawTreeParser CreateRawTreeParser()
{
return(new ImpalaRawParser(ImpalaUtility.CreateDialect(_verseion)));
}