Method nextToken

src/main/java/org/sfj/JSONOne.java:651–704

()

    }

    public Token nextToken() throws ParseException {
      if (!pushBack.isEmpty()) {
        return pushBack.removeFirst();
      }

      while (!isAtEnd()) {
        char ch = advance();
        switch (ch) {
          case '\n':
            line++;
            start++;
            break;
          case ' ':
          case '\r':
          case '\t':
            start++;
            break;
          case ':':
            return token(TokenType.COLON);
          case '{':
            return token(TokenType.LEFT_CURLY);
          case '}':
            return token(TokenType.RIGHT_CURLY);
          case '[':
            return token(TokenType.LEFT_BRACKET);
          case ']':
            return token(TokenType.RIGHT_BACKET);
          case '"':
            return stringToken();
          case '-':
          case '+':
          case '0':
          case '1':
          case '2':
          case '3':
          case '4':
          case '5':
          case '6':
          case '7':
          case '8':
          case '9':
            return numberToken(ch);
          case 'n':
            return advanceMatching("ull", false, TokenType.NULL);
          case 't':
            return advanceMatching("rue", false, TokenType.TRUE);
          case 'f':
            return advanceMatching("alse", false, TokenType.FALSE);
          case ',':
            return token(TokenType.COMMA);
        }
      }
      return token(TokenType.EOF);
    }

    private Token numberToken(char ch) {
      StringBuilder ret = new StringBuilder();