usr/src/usr.bin/struct/struct/3.def.h

/*      3.def.h 4.2     83/08/11        */

#define RECURSE(p,v,r)  { for (r = 0; r < CHILDNUM(v); ++r) if (DEFINED(LCHILD(v,r))) p(LCHILD(v,r)); if (DEFINED(RSIB(v))) p(RSIB(v)); }

#define IFTHEN(v)               ( NTYPE(v) == IFVX && !DEFINED(LCHILD(v,ELSE)))

#define BRK(v)  FATH(v)         /* lexical successor of v, for ITERVX only */
#define LABEL(v)        REACH(v)