private void FillTables()
{
KeywordsList.AddRange(Tokens.Where(t => t.HasType(TokenType.Keyword)).Select(t => t.Value).Distinct());
OperatorsList.AddRange(Tokens.Where(t => t.HasType(TokenType.Operator)).Select(t => t.Value).Distinct());
FunctionsList.AddRange(Tokens.Where(t => t.HasType(TokenType.Function)).Select(t => t.Value).Distinct());
IdentifiersList.AddRange(Tokens.Where(t => t.HasType(TokenType.Identifier)).Select(t => t.Value).Distinct());
ConstantsList.AddRange(Tokens.Where(t => t.HasOneOfTypes(TokenType.CharConstant, TokenType.IntegerConstant, TokenType.FloatConstant, TokenType.StringConstant)).Select(t => t.Value.Escape()).Distinct());
}