188     struct Branch {  struct
189         Branch() {  in Branch()  argument
192         Branch(Op op, int depth, size_t offset)  in Branch()  argument
197         enum Primed {
202         enum Done {
207         unsigned fOffset : 16; // offset in generated stream where branch needs to go
208         int fOpStackDepth : 7; // depth when operator was found
209         Op fOperator : 6; // operand which generated branch
210         mutable Primed fPrimed : 1;    // mark when next instruction generates branch
211         Done fDone : 1;    // mark when branch is complete
212         void prime() { fPrimed = kIsPrimed; }  in prime()