static int ExtractLiteral()

in src/Microsoft.Azure.NotificationHubs/Messaging/ExpressionEvaluator.cs [214:254]

• 35 lines of code
• 8 McCabe index (conditional complexity)

        static int ExtractLiteral(string fullExpression, string tokenBegin, Token token)
        {
            int tokenEndIndex = 0;
            int startLookingFromIndex = 1;
            char literalSeperator = token.Type == TokenType.SingleLiteral ? '\'' : '\"';
            bool escapeCharsFound = false;

            while (true)
            {
                tokenEndIndex = tokenBegin.IndexOf(literalSeperator, startLookingFromIndex);

                if (tokenEndIndex == -1)
                {
                    throw new InvalidDataContractException(string.Format(SRClient.ExpressionLiteralMissingClosingNotation, fullExpression, tokenBegin));
                }

                if (tokenEndIndex + 1 < tokenBegin.Length && tokenBegin[tokenEndIndex + 1] == literalSeperator)
                {
                    escapeCharsFound = true;
                    startLookingFromIndex = tokenEndIndex + 2;
                    continue;
                }
                else
                {
                    string literal = tokenBegin.Substring(1, tokenEndIndex - 1);

                    if (escapeCharsFound)
                    {
                        token.Property = token.Type == TokenType.DoubleLiteral ? literal.Replace(@"""""", @"""") : literal.Replace(@"''", @"'");
                    }
                    else
                    {
                        token.Property = literal;
                    }

                    break;
                }
            }

            return tokenEndIndex;
        }