public void Interpret(string infix)
        {
            _stToLex = new StringToLexem(infix);

            while ((_lexems = _stToLex.ToLexems()).Count > 0 || _lexems.Any(x =>
                                                                            x.LexemType == LexemType.EndOfExpr || x.LexemType == LexemType.Brace))
            {
                if (_skipToCloseBrace)
                {
                    int opennedBraces = 0;
                    while (!_lexems.Any(x => x.LexemType == LexemType.Brace && x.Content.ToString() == "}" && opennedBraces == 0))
                    {
                        if (_lexems.Any(x => x.LexemType == LexemType.Brace))
                        {
                            var brace = _lexems.Single(x => x.LexemType == LexemType.Brace);
                            if (brace.Content.ToString() == "{")
                            {
                                opennedBraces++;
                            }
                            else
                            {
                                opennedBraces--;
                            }
                        }
                        _lexems = _stToLex.ToLexems();
                    }
                }
                Output.Clear();
                ToRPN();
                Stack.Clear();
                Eval();
            }
        }
        public void Interpret(string infix)
        {
            _stToLex = new StringToLexem(infix);

            while ((_lexems = _stToLex.ToLexems()).Count > 0 || _lexems.Any(x =>
                x.LexemType == LexemType.EndOfExpr || x.LexemType == LexemType.Brace))
            {
                if (_skipToCloseBrace)
                {
                    int opennedBraces = 0;
                    while (!_lexems.Any(x => x.LexemType == LexemType.Brace && x.Content.ToString() == "}" && opennedBraces == 0))
                    {
                        if (_lexems.Any(x => x.LexemType == LexemType.Brace))
                        {
                            var brace = _lexems.Single(x => x.LexemType == LexemType.Brace);
                            if (brace.Content.ToString() == "{") opennedBraces++; else opennedBraces--;
                        }
                        _lexems = _stToLex.ToLexems();
                    }
                }
                Output.Clear();
                ToRPN();
                Stack.Clear();
                Eval();
            }
        }