private static void Initialize()
{
_baseReservedKeywords.Add("AND", LexicalComponent.CreateReservedKeyword(Category.And, "AND"));
_baseReservedKeywords.Add("OR", LexicalComponent.CreateReservedKeyword(Category.Or, "OR"));
_baseReservedKeywords.Add("ORDER BY", LexicalComponent.CreateReservedKeyword(Category.Order_by, "ORDER BY"));
_baseReservedKeywords.Add("ASC", LexicalComponent.CreateReservedKeyword(Category.Asc, "ASC"));
_baseReservedKeywords.Add("DESC", LexicalComponent.CreateReservedKeyword(Category.Desc, "DESC"));
_baseReservedKeywords.Add("FROM", LexicalComponent.CreateReservedKeyword(Category.From, "FROM"));
_baseReservedKeywords.Add("WHERE", LexicalComponent.CreateReservedKeyword(Category.Where, "WHERE"));
_baseReservedKeywords.Add("SELECT", LexicalComponent.CreateReservedKeyword(Category.Select, "SELECT"));
_tableInitialized = true;
}
public static LexicalComponent CheckReservedKeyword(LexicalComponent component)
{
if (!_tableInitialized)
{
Initialize();
}
if (_baseReservedKeywords.ContainsKey(component?.Lexeme?.ToUpper()) && component.Category == Category.Identifier)
{
return(LexicalComponent.CreateReservedKeyword(
_baseReservedKeywords[component.Lexeme.ToUpper()].Category,
component.Lexeme,
component.LineNumber,
component.InitialPosition,
component.FinalPosition));
}
return(component);
}