isHighSurrogate() private method

private isHighSurrogate ( char par0 ) : bool
par0 char
return bool
示例#1
0
        public virtual AbstractStringBuilder reverse()
        {
            boolean hasSurrogate = false;
            int     n            = count - 1;

            for (int j = (n - 1) >> 1; j >= 0; --j)
            {
                char temp  = value[j];
                char temp2 = value[n - j];
                if (!hasSurrogate)
                {
                    hasSurrogate = (temp >= Character.MIN_SURROGATE && temp <= Character.MAX_SURROGATE) ||
                                   (temp2 >= Character.MIN_SURROGATE && temp2 <= Character.MAX_SURROGATE);
                }
                value[j]     = temp2;
                value[n - j] = temp;
            }
            if (hasSurrogate)
            {
                // Reverse back all valid surrogate pairs
                for (int i = 0; i < count - 1; i++)
                {
                    char c2 = value[i];
                    if (Character.isLowSurrogate(c2))
                    {
                        char c1 = value[i + 1];
                        if (Character.isHighSurrogate(c1))
                        {
                            value[i++] = c1;
                            value[i]   = c2;
                        }
                    }
                }
            }
            return(this);
        }