Parsley JSON

Parsley JSON is a JSON decoder that parses a JSON string into objects. Parsley JSON uses the definition of a struct to generate code that is efficient and fast. This library is inspired by easyjson.

Installation

go install github.com/Soreing/parsley/parsley@latest
go get github.com/Soreing/parsley

Usage

Objects that implement the ParsleyJSON interfaces can be used in the Unmarshal functions to encode or decode data. The interface can be implemented with the generator (or custom written for rare use cases).

dat := []byte (`{"name": "A Box", "weight": 10.5}`)
box := Box{}

err := parsley.Unmarshal(dat, &box)
if err != nil {
	panic(err)
}

Code Generation

To encode/decode data, first you need to generate the mapping functions for the structs you want to use. The json flag tells the generator to process the defined struct. You can add more flags separated by commas.

//parsley:json
type Box struct {
	Name   string  `json:"name"`
	Weight float64 `json:"weight"`
}

//parsley:json
type BoxList []Box

Run the generator with the path to the file or folder to the module. Assuming the above file is in tests/models/box.go, use the following command:

parsley tests/models/box.go

Struct Flags

Flag	Description
json	Process the struct or type define in the generator
skip	Skip the struct or type define during generation
public	Include private fields in encoding/decoding

Command Line Arguments

Arg	Description
-all	Processes all structs in a file or directory
-public	Include private fields in encoding/decoding for all types
-output_filename	Sets the filename of the generated code
-camel_case	Uses camel case naming for fields unless explicitly defined
-lower_case	Uses lower case naming for fields unless explicitly defined
-kebab_case	Uses kebab case naming for fields unless explicitly defined
-snake_case	Uses snake case naming for fields unless explicitly defined
-pascal_case	Uses pascal case naming for fields unless explicitly defined

Todo List

• Implement reading of scientific (exponential) notation for number fields
• Improve speed of floating point number creation