/**
 * 对某个表达式进行求值
 * @param viewModel 数据对象
 * @param express
 */
export function tplExpress(viewModel, express) {
    if (viewModel.expressionRe.test(express)) {
        // If we have '{foo}' alone it is a literal 简单表达式
        express = express.substring(1, express.length - 1);
        return viewModel.get(express)

    } else {
        let ret = undefined
        viewModel.bind(express, function (v) {
            ret = v
            debugger
        })
        // Ext.app.bind.TemplateBinding
        debugger
    }
}

/**
 * 对多个表达式进行求值. 异步回调的方式返回
 *      {
 *          a: 1,
 *          b: '{someBind}',
 *          c: ['a', 'b', 'c'],
 *          d: ['a', 'b', '{someBind}'],
 *          e: {
 *              y: 1,
 *              z: 2
 *          },
 *          f: {
 *              y: 1,
 *              z: '{someBind}'
 *          }
 *      }
 *
 *      // Will produce
 *      {
 *          b: value,
 *          d: ['a', 'b', value],
 *          f: {
 *              y: 1,
 *              z: value
 *          }
 *      }
 * @param viewModel scope.viewModel对象
 * @param paramObject 求值对象
 */
export function calcObject(viewModel, paramObject) {
    // new Ext.app.bind.Multi({a:'1',b:'ddd{query.WH_ID}'},currentScope.viewModel,function(v){console.log(v)},currentScope, {single: true})
    return new Promise(resolve => {
        const schedule = new Ext.app.bind.Multi(
            paramObject,
            viewModel,
            (ret) => {
                schedule.destroy()
                resolve(ret)
            },
            viewModel,
            {single: true})
    })
}