Function ReactFiberNewContext

code/new-context-api/public/app.js:11865–11914

(stack)

};

var ReactFiberNewContext = function (stack) {
  var createCursor = stack.createCursor,
      push = stack.push,
      pop = stack.pop;


  var providerCursor = createCursor(null);
  var valueCursor = createCursor(null);
  var changedBitsCursor = createCursor(0);

  var rendererSigil = void 0;
  {
    // Use this to detect multiple renderers using the same context
    rendererSigil = {};
  }

  function pushProvider(providerFiber) {
    var context = providerFiber.type.context;

    push(changedBitsCursor, context._changedBits, providerFiber);
    push(valueCursor, context._currentValue, providerFiber);
    push(providerCursor, providerFiber, providerFiber);

    context._currentValue = providerFiber.pendingProps.value;
    context._changedBits = providerFiber.stateNode;

    {
      warning(context._currentRenderer === null || context._currentRenderer === rendererSigil, 'Detected multiple renderers concurrently rendering the ' + 'same context provider. This is currently unsupported.');
      context._currentRenderer = rendererSigil;
    }
  }

  function popProvider(providerFiber) {
    var changedBits = changedBitsCursor.current;
    var currentValue = valueCursor.current;

    pop(providerCursor, providerFiber);
    pop(valueCursor, providerFiber);
    pop(changedBitsCursor, providerFiber);

    var context = providerFiber.type.context;
    context._currentValue = currentValue;
    context._changedBits = changedBits;
  }

  return {
    pushProvider: pushProvider,
    popProvider: popProvider
  };
};

var ReactFiberStack = function () {
  var valueStack = [];