msvcp90: Add istream::operator>>complex implementation and tests.

[YongHao Hu]

Good point. I had sent a new patch to wine-patch.
Thank you very much for your comment. : )

On 2015年03月09日 18:23, Piotr Caban wrote:
> Hi,
>
> On 03/07/15 12:13, YongHao Hu wrote:
>> +/* 
>> ??$?5MDU?$char_traits at D@std@@@std@@YAAAV?$basic_istream at DU?$char_traits at D@std@@@0 at AAV10@AAV?$complex at M@0@@Z 
>> */
>> +/* 
>> ??$?5MDU?$char_traits at D@std@@@std@@YAAEAV?$basic_istream at DU?$char_traits at D@std@@@0 at AEAV10@AEAV?$complex at M@0@@Z 
>> */
>> +basic_istream_char* __cdecl 
>> basic_istream_char_read_complex_float(basic_istream_char *this, 
>> complex_float *v)
>> +{
>> +    float r;
>> +    basic_ios_char *base = basic_istream_char_get_basic_ios(this);
>> +    if(ios_base_good(&base->base)) {
> There's no need to check the stream state here, it will be done by 
> stream reading functions.
>> +        ws_basic_istream_char(this);
>> +        if(basic_istream_char_peek(this) == '(') {
>> +            basic_istream_char_get(this);
>> +            basic_istream_char_read_float(this, &r);
>> +            if(!ios_base_fail(&base->base)) {
> I think that the implementation will be more readable if you just 
> return on error here. The if(!ios_base_fail(...)) line can be changed to:
> if(ios_base_fail(&base->base))
>     return this;
> You don't need to set failbit in this case because it's already set by 
> basic_istream_char_read_float. The same applies to some other 
> ios_base_fail() checks.
>
> Thanks,
> Piotr