codegen

Gojay code generator

This package provides a command line tool to generate gojay's marshaling and unmarshing interface implementation for custom type(s)

Get started

go install github.com/francoispqt/gojay/gojaygen

Generate code

Basic command

The basic command is straightforward and easy to use:

cd $GOPATH/src/mycoany/myproject
gojaygen -p myproject

If you just want to the output to stdout, omit the third parameter.

Using flags

• s file/dir to path, can be a relative or absolute path
• t root types to generate with its all dependencies (comma separated)
• a annotation tag used to read meta data (default: json)
• o output file (relative or absolute path)
• p reuse object witt sync.Pool

Examples:

• Specific type in a go package, write to a file:

gojay -s /tmp/myproj -t SomeType -o output.go

• Specific types in a go package, with custom tag, write to a file::

gojay -s somegofile.go -a gojay -t SomeType

Generator tags

You can add tags to your structs to control:

• the JSON key
• skip a struct field
• the use of omit empty methods for marshaling
• timeFormat (java style data format)
• timeLayout (golang time layout)

Example:

type A struct {
    Str             string  `json:"string"`
    StrOmitEmpty    string  `json:"stringOrEmpty,omitempty"`
    Skip            string  `json:"-"`
	StartTime time.Time `json:"startDate" timeFormat:"yyyy-MM-dd HH:mm:ss"`
	EndTime *time.Time `json:"endDate" timeLayout:"2006-01-02 15:04:05"`
}