85 lines
2.5 KiB
TypeScript
85 lines
2.5 KiB
TypeScript
/**
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* @author Martin Karkowski
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* @email m.karkowski@zema.de
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* @create date 2020-11-06 08:53:51
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* @modify date 2020-11-06 08:53:51
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* @desc [description]
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*/
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/**
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* Function to stringify an Object. This Function will stringify Functions as well.
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* @param obj The Object.
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*/
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export function stringifyWithFunctions(obj) {
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return JSON.stringify(obj, (key, value) => {
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if (typeof value === "function") {
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let str: string = value.toString();
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// Todo Parse Arrow-Functions Correctly!
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// Details here: https://zendev.com/2018/10/01/javascript-arrow-functions-how-why-when.html
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// Difference Cases For:
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// 1) (a, b) => a + b;
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// 2) array => array[0];
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// 3) (a, b) => (a + b);
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// 4) (name, description) => ({name: name, description: description})
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// ....
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if (!str.startsWith("function") && !str.startsWith("(")) {
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const name = str.slice(0, str.indexOf("=>"));
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const func = str.slice(str.indexOf("=>(") + 3, str.length - 2);
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const adaptedFunc = "function(" + name + "){ return " + func + "; }";
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str = adaptedFunc;
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}
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return "/Function(" + str + ")/";
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}
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return value;
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});
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}
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/**
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* Function to parse a JSON String, in which methods should be available.
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* @param json A String containing the json Object
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*/
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export function parseWithFunctions(json: string) {
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return JSON.parse(json, (key, value) => {
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if (
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typeof value === "string" &&
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value.startsWith("/Function(") &&
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value.endsWith(")/")
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) {
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const _value = value.substring(10, value.length - 2);
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try {
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return eval("(" + _value + ")");
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} catch (e) {
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console.log("FAILED PARSING", value, _value);
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}
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}
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return value;
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});
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}
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/**
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* Function to stringify an Object. This Function is able to stringify Functions as well. Use the Flag withFunctions
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* @param obj The Object.
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* @param withFunctions Flag to Turn on / off the parsing of functions
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*/
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export function stringify(obj: any, withFunctions = false): string {
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if (withFunctions) {
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return stringifyWithFunctions(obj);
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}
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return JSON.stringify(obj);
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}
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/**
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* Function to parse a JSON String. This Function is able to parse Functions as well. Use the Flag withFunctions
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* @param json A String containing the json Object
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* @param withFunctions Flag to Turn on / off the parsing of functions
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*/
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export function parse(json: string, withFunctions = false): any {
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if (withFunctions) {
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return parseWithFunctions(json);
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}
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return JSON.parse(json);
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}
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