This lib will parse the JSON string into a composition of HashMaps and Vectors where JSON Object will be convert to HashMaps and JSON List will be the Vector. I decided to use Hashmap because it is easy to retrive the key and iterate through it without any fancy method.
I'm looking for a JSON parsing lib in Rust language that easily to retreive list JSON Object keys. I tried serde, maybe I'm too dumb but I can't find any simple way to retreive it, so I decided to implement a JSON parser.
Since Rust is type strict but still allows multiple types in enum, I create an enum called JSON to support all of data types in JSON. The table below shows the relation between my enum and each of JSON data type.
| enum | JSON Data type |
|---|---|
JSON::Int |
Number: 123 |
JSON::Flt* |
Number with floating points: 123.321 |
JSON::Str |
A JSON String datatype: "Example String" |
JSON::Lst |
A JSON List: [ "Str1", 12, 13.1 ] |
JSON::Obj |
An JSON Object: { "K1":12, "K2":false } |
JSON::Bol |
A boolean data: true, false |
JSON::Nul |
A null data type: null |
For the algorithm of this lib, I got some inspiration from PDA (Push Down Automata) and I tried to code this by myself, so please do not expect any excellent coding style or idiomatic way of rust or 100% correctness of PDA.
Currently, it is still in the alpha stage. I didn't finish the test yet, also the code so messy with a lot of duplication states ;-; I promise I will do code cleanup in.... some day, but I can't give you any precise date when this lib going to be on crate.io.
- For the float data type, I still find a good way to merge with
JSON::Intand renamed it toJSON::Num... but I still not sure which will be the best solution. - all of
panicsis going to be remove soon.