1 /* 3.def.h 4.2 83/08/11 */ 2 3 #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)); } 4 5 #define IFTHEN(v) ( NTYPE(v) == IFVX && !DEFINED(LCHILD(v,ELSE))) 6 7 #define BRK(v) FATH(v) /* lexical successor of v, for ITERVX only */ 8 #define LABEL(v) REACH(v) 9