Boost Regex cheat sheet

totalgee · February 9, 2022, 8:51pm

The default “flavour” for the C++ standard library regex is ECMAScript, and I think it’s the same for Boost (I believe SC uses Boost’s regex implementation).

Searching in the code, it looks like SC is also explicitly requesting ECMAScript regex syntax…

github.com

supercollider/supercollider/blob/18c4aad363c49f29e866f884f5ac5bd35969d828/lang/LangPrimSource/PyrStringPrim.cpp#L337

      
        
            }
            
            
struct sc_regexp_match {
                int pos;
                int len;
            };
            
            

            
static int prString_FindRegexp(struct VMGlobals* g, int numArgsPushed) {
                /* not reentrant */
                static detail::regex_lru_cache regex_lru_cache(boost::regex_constants::ECMAScript);
            
            
    using namespace boost;
            
            
    PyrSlot* a = g->sp - 2; // source string
                PyrSlot* b = g->sp - 1; // pattern
                PyrSlot* c = g->sp; // offset
            
            
    if (!isKindOfSlot(b, class_string) || (NotInt(c))) {
                    SetNil(a);
                    return errWrongType;