pjsval

package main

import (
	"log"
	"os"

	"github.com/moqada/pjsval"
)

func main() {
	in, err := os.Open("./example.json")
	if err != nil {
		log.Fatal(err)
		return
	}
	if err := pjsval.Generate(in, os.Stdout, "validator"); err != nil {
		log.Fatal(err)
		return
	}
}

Output:

package validator

import "github.com/lestrrat/go-jsval"

var InfoInstancesValidator *jsval.JSVal
var UserCreateValidator *jsval.JSVal
var UserSelfValidator *jsval.JSVal
var M *jsval.ConstraintMap
var R0 jsval.Constraint
var R1 jsval.Constraint
var R2 jsval.Constraint

func init() {
	M = &jsval.ConstraintMap{}
	R0 = jsval.String().RegexpString("^[0-9]{4}-[0-9]{2}-[0-9]{2}$")
	R1 = jsval.String()
	R2 = jsval.String()
	M.SetReference("#/definitions/user/definitions/birthday", R0)
	M.SetReference("#/definitions/user/definitions/firstName", R1)
	M.SetReference("#/definitions/user/definitions/lastName", R2)
	InfoInstancesValidator = jsval.New().
		SetName("InfoInstancesValidator").
		SetConstraintMap(M).
		SetRoot(
			jsval.EmptyConstraint,
		)

	UserCreateValidator = jsval.New().
		SetName("UserCreateValidator").
		SetConstraintMap(M).
		SetRoot(
			jsval.Object().
				Required("birthday", "email", "firstName", "lastName").
				AdditionalProperties(
					jsval.EmptyConstraint,
				).
				AddProp(
					"birthday",
					jsval.Reference(M).RefersTo("#/definitions/user/definitions/birthday"),
				).
				AddProp(
					"firstName",
					jsval.Reference(M).RefersTo("#/definitions/user/definitions/firstName"),
				).
				AddProp(
					"lastName",
					jsval.Reference(M).RefersTo("#/definitions/user/definitions/lastName"),
				),
		)

	UserSelfValidator = jsval.New().
		SetName("UserSelfValidator").
		SetConstraintMap(M).
		SetRoot(
			jsval.Object().
				AdditionalProperties(
					jsval.EmptyConstraint,
				).
				AddProp(
					"fields",
					jsval.String(),
				),
		)

}