Re: [Boost-users] [Spirit/qi] parsing order, exact matches

On 10/2/2013 2:31 PM, beet wrote:

Dear Boost-User list,

I have modified the calc6-example from the Spirit docs, so that it uses double variables rather than integers. I have then added a number of mathematical functions.

The rule for the unary functions (reduced to just sin and sinh here for readability) is:

unary_function_rule_ = (string_("sin") > '(' > expression_rule_ > ')') | (string_("sinh") > '(' > expression_rule_ > ')') ;

For this specific case you can reverse the order:

(string_("sinh") > '(' > expression_rule_ > ')') | (string_("sin") > '(' > expression_rule_ > ')')

for the more general case see: http://www.boost.org/doc/libs/1_41_0/libs/spirit/repository/doc/html/spirit_... Jeff