Joel Falcou wrote:
Eric Niebler a écrit :
Interesting. You might try disabling Proto's comma operator and writing your own that fires off expression evaluations.
I thought of that but I need the whole AST for checking for various stuff. Basically I transform a algebra AST into a a pair of objects : a tuples of matrix begin() pointer and a stripped AST so I can generate a software pipelined evaluation loop nest.
I tried adding the destructor-based evaluation and it seems to work but I fear there may be some side-effects I'll regret later.
Aside from the usual advice against doing stuff in destructors that can fail ... how do you ensure that only the top-level (outermost) object's destructor causes an evaluation? Might it be cleaner to be more explicit about evaluation, e.g., like: eval(( a = b+c, u = x + y, z = 3*e )); ? -- Eric Niebler BoostPro Computing http://www.boostpro.com