ag-grid/dist/lib/valueService/expressionService.js

Advanced Data Grid / Data Table supporting Javascript / React / AngularJS / Web Components

/**
 * ag-grid - Advanced Data Grid / Data Table supporting Javascript / React / AngularJS / Web Components
 * @version v18.1.2
 * @link http://www.ag-grid.com/
 * @license MIT
 */
"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
    return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
    if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var __param = (this && this.__param) || function (paramIndex, decorator) {
    return function (target, key) { decorator(target, key, paramIndex); }
};
Object.defineProperty(exports, "__esModule", { value: true });
var logger_1 = require("../logger");
var context_1 = require("../context/context");
var context_2 = require("../context/context");
var ExpressionService = (function () {
    function ExpressionService() {
        this.expressionToFunctionCache = {};
    }
    ExpressionService.prototype.setBeans = function (loggerFactory) {
        this.logger = loggerFactory.create('ExpressionService');
    };
    ExpressionService.prototype.evaluate = function (expressionOrFunc, params) {
        if (typeof expressionOrFunc === 'function') {
            // valueGetter is a function, so just call it
            var func = expressionOrFunc;
            return func(params);
        }
        else if (typeof expressionOrFunc === 'string') {
            // valueGetter is an expression, so execute the expression
            var expression = expressionOrFunc;
            return this.evaluateExpression(expression, params);
        }
        else {
            console.error('ag-Grid: value should be either a string or a function', expressionOrFunc);
        }
    };
    ExpressionService.prototype.evaluateExpression = function (expression, params) {
        try {
            var javaScriptFunction = this.createExpressionFunction(expression);
            // the params don't have all these values, rather we add every possible
            // value a params can have, which makes whatever is in the params available.
            var result = javaScriptFunction(params.value, params.context, params.oldValue, params.newValue, params.value, params.node, params.data, params.colDef, params.rowIndex, params.api, params.columnApi, params.getValue, params.column, params.columnGroup);
            return result;
        }
        catch (e) {
            // the expression failed, which can happen, as it's the client that
            // provides the expression. so print a nice message
            console.log('Processing of the expression failed');
            console.log('Expression = ' + expression);
            console.log('Exception = ' + e);
            return null;
        }
    };
    ExpressionService.prototype.createExpressionFunction = function (expression) {
        // check cache first
        if (this.expressionToFunctionCache[expression]) {
            return this.expressionToFunctionCache[expression];
        }
        // if not found in cache, return the function
        var functionBody = this.createFunctionBody(expression);
        var theFunction = new Function('x, ctx, oldValue, newValue, value, node, data, colDef, rowIndex, api, columnApi, getValue, column, columnGroup', functionBody);
        // store in cache
        this.expressionToFunctionCache[expression] = theFunction;
        return theFunction;
    };
    ExpressionService.prototype.createFunctionBody = function (expression) {
        // if the expression has the 'return' word in it, then use as is,
        // if not, then wrap it with return and ';' to make a function
        if (expression.indexOf('return') >= 0) {
            return expression;
        }
        else {
            return 'return ' + expression + ';';
        }
    };
    __decorate([
        __param(0, context_2.Qualifier('loggerFactory')),
        __metadata("design:type", Function),
        __metadata("design:paramtypes", [logger_1.LoggerFactory]),
        __metadata("design:returntype", void 0)
    ], ExpressionService.prototype, "setBeans", null);
    ExpressionService = __decorate([
        context_1.Bean('expressionService')
    ], ExpressionService);
    return ExpressionService;
}());
exports.ExpressionService = ExpressionService;