public void unrollRecursionContexts(ParserRuleContext _parentctx) { _precedenceStack.pop(); _ctx.stop = _input.LT(-1); ParserRuleContext retctx = _ctx; // save current ctx (return value) // unroll so _ctx is as it was before call to recursive method if (_parseListeners != null) { while (_ctx != _parentctx) { triggerExitRuleEvent(); _ctx = (ParserRuleContext) _ctx.parent; } } else { _ctx = _parentctx; } // hook into tree retctx.parent = _parentctx; if (_buildParseTrees && _parentctx != null) { // add return ctx into invoking rule's tree _parentctx.addChild(retctx); } }