var App = Ember.Application.create({

  rootElement: '#app',

  LOG_RESOLVER: true

});

​

App.Router.map(function() {

});

​

App.ApplicationRoute = Ember.Route.extend({

  model() {

    return {

      validations: {

        attrs: {

          username: {

            isInvalid: true

          }

        }

      }

    }

  },

​

  actions: {

    error: function(error) {

      log(error.message);

    }

  }  

});

​

function MightyMorphinVGet(options) {

  this.options = options;

  this.syntax = null; // set by HTMLBars

}

​

MightyMorphinVGet.prototype.transform = function(ast) {

  var pluginContext = this;

  let b = this.syntax.builders;

  let walker = new this.syntax.Walker();

​

  walker.visit(ast, function(node) {

    if (!pluginContext.validate(node)) {

      return;

    }

    pluginContext.processParams(node);

​

    // TODO: add support for hash params

    // pluginContext.processHash(node);

  });

​

  return ast;

};

​

MightyMorphinVGet.prototype.processParams = function(node) { 

  for (var i = 0, l = node.params.length; i < l; i++) {

    let param = node.params[i];

    if (param.type === 'SubExpression' && param.path.original === 'v-get') {

      let replacementPath = param.params[0].original + '.validations.attrs.';

      replacementPath += param.params.slice(1).map(p => p.original).join('.');

​

      let newParam = this.syntax.builders.path(replacementPath);

​

      node.params[i] = newParam;

    }    

  }

}

​

MightyMorphinVGet.prototype.validate = function(node) {  

  return node.type === 'BlockStatement' || node.type === 'MustacheStatement';

};

​

Ember.HTMLBars.registerPlugin('ast', MightyMorphinVGet);

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Ember.onerror = function(error) {

  log(error.stack);

};

function log() {

  var msg = [].slice.call(arguments).join(' ');

  logs.insertBefore(document.createTextNode("\n" + msg), logs.firstChild);

}