Method enterLoop

rhino/src/main/java/org/mozilla/javascript/Parser.java:567–584

(Loop loop)

    }

    private void enterLoop(Loop loop) {
        if (loopSet == null) loopSet = new ArrayList<>();
        loopSet.add(loop);
        if (loopAndSwitchSet == null) loopAndSwitchSet = new ArrayList<>();
        loopAndSwitchSet.add(loop);
        pushScope(loop);
        if (currentLabel != null) {
            currentLabel.setStatement(loop);
            currentLabel.getFirstLabel().setLoop(loop);
            // This is the only time during parsing that we set a node's parent
            // before parsing the children.  In order for the child node offsets
            // to be correct, we adjust the loop's reported position back to an
            // absolute source offset, and restore it when we call
            // restoreRelativeLoopPosition() (invoked just before setBody() is
            // called on the loop).
            loop.setRelative(-currentLabel.getPosition());
        }
    }

    private void exitLoop() {
        loopSet.remove(loopSet.size() - 1);