Function getControllers

lib/test/angular/1.8.0/angular.js:10709–10758

(directiveName, require, $element, elementControllers)

    }

    function getControllers(directiveName, require, $element, elementControllers) {
      var value;

      if (isString(require)) {
        var match = require.match(REQUIRE_PREFIX_REGEXP);
        var name = require.substring(match[0].length);
        var inheritType = match[1] || match[3];
        var optional = match[2] === '?';

        //If only parents then start at the parent element
        if (inheritType === '^^') {
          $element = $element.parent();
        //Otherwise attempt getting the controller from elementControllers in case
        //the element is transcluded (and has no data) and to avoid .data if possible
        } else {
          value = elementControllers && elementControllers[name];
          value = value && value.instance;
        }

        if (!value) {
          var dataName = '$' + name + 'Controller';

          if (inheritType === '^^' && $element[0] && $element[0].nodeType === NODE_TYPE_DOCUMENT) {
            // inheritedData() uses the documentElement when it finds the document, so we would
            // require from the element itself.
            value = null;
          } else {
            value = inheritType ? $element.inheritedData(dataName) : $element.data(dataName);
          }
        }

        if (!value && !optional) {
          throw $compileMinErr('ctreq',
              'Controller \'{0}\', required by directive \'{1}\', can\'t be found!',
              name, directiveName);
        }
      } else if (isArray(require)) {
        value = [];
        for (var i = 0, ii = require.length; i < ii; i++) {
          value[i] = getControllers(directiveName, require[i], $element, elementControllers);
        }
      } else if (isObject(require)) {
        value = {};
        forEach(require, function(controller, property) {
          value[property] = getControllers(directiveName, controller, $element, elementControllers);
        });
      }

      return value || null;
    }

    function setupControllers($element, attrs, transcludeFn, controllerDirectives, isolateScope, scope, newIsolateScopeDirective) {
      var elementControllers = createMap();