Abdul Haliq - Project Portfolio

Wrote a tutorial for the team to understand Responses at its most basic form

The parsing is done by JsonParser. It takes a string and attempts to read it as one of a JsonValueTypes and create its corresponding object wrapped in JsonValue. Since Objects and Arrays can recursively contain a json value, their contents are also read, created and wrapped.

Given below is the overview activity diagram of parsing a json string input.

It will first be tested to see if its an integer and if it fails it will be tested for a double. Consequently, boolean, string, json object, json array.

Json object values are themselves json values thus the activity diagram is called recursively Likewise for json array values.

The JsonParser is designed to be a utility class with a pure function without any mutation of state. Thus it should be self contained within a single function call.

Having that we are using the regex approach to parsing, some common parsing and regex creation methods are stored in the following class:

API : RegexUtil.java

RegexUtil#commandFormatRegex` creates a regex that starts with the command argument and lookaheads for the elements of args. Thus a regex for the input create front/asd back/dsa can be created with commandFormatRegex("create", new String[]{"front/", "back/"});.

RegexUtil#parseCommandFormat is an algorithm that parses user input and returns the resulting values from the input. Following the previous example, parsing the input will create an arraylist of two arraylists. The first arraylist contains one element "asd" and the second arraylist contains one element "dsa"; parallel to the arguments of the input.