Re: [Spirit-general] char parser for a list of possible chars

[TONGARI J <ton...@gm...>]

2015-06-17 20:35 GMT+08:00 MM <fin...@gm...>:

> On 17 June 2015 at 13:23, Seth <bu...@se...> wrote:
>
>> On 06/17/2015 10:30 AM, MM wrote:
>> > Hi,
>> >
>> > Is there a more compact way to express this parser?
>> > With the target of having 'char' as an attribute?
>> >
>> > 1. char_('A') | char_('E') | char_('X')
>> >
>> Yes
>> >
>> > 2. char_("AEX")  // does this parse any of A or E or X?
>> Yes
>> >
>> > According to the rules, the synthetized attribute of 1. is variant<
>> > char, char, char >.
>> Yes
>>
>> > Does it simplify to char ?
>> Yes
>>
>>
>> ------------------------------------------------------------------------------
>>
> Thanks.
> How would I go about updating the 5th row here:
>
> http://www.boost.org/doc/libs/1_58_0/libs/spirit/doc/html/spirit/qi/quick_reference/qi_parsers/char.html
> ?
> to make it clearer?
>

It's in the 7th row (charset), you should look at this:

http://www.boost.org/doc/libs/1_58_0/libs/spirit/doc/html/spirit/qi/reference/char/char.html#spirit.qi.reference.char.char.char__def_