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astjson_example_test.go
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astjson_example_test.go
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package astjson
import (
"errors"
"fmt"
)
type (
Sub struct {
ArrayInt []int `json:"array_int"`
Str string `json:"str"`
}
Nest struct {
Hello string `json:"hello"`
}
demo struct {
Str string `json:"str"`
Int int `json:"int"`
Float64 float64 `json:"float64"`
Bool bool `json:"bool"`
Null *int `json:"null"`
ArrayInt []int `json:"array_int"`
ArrayInt1 [1]int `json:"array_int1"`
Sub Sub `json:"sub"`
Nest
}
)
const jsonStr = `
{
"str": "str",
"int": 999,
"float64": 0.99,
"bool": true,
"null": null,
"array_int": [-1,0,1],
"array_int1": [-1,0,1],
"sub": {
"array_int": [-1,0,1],
"str": "str"
},
"hello": "hello"
}
`
func ExampleDecoder_Unmarshal() {
var d demo
err := NewDecoder().Unmarshal(NewParser([]byte(jsonStr)).Parse(), &d)
dieIf(err)
fmt.Println(d)
}
func ExampleWalker_Walk() {
astValue := NewParser([]byte(jsonStr)).Parse()
val, err := NewWalker(astValue).
Field("str").
Optional("num", func(value *Value) error {
actual := value.AstValue.(NumberAst).GetInt64()
if actual == 123 {
return nil
}
return errors.New("num should be 123")
}).
Field("bool").
Validate(func(value *Value) error {
if value.AstValue.(BoolAst) {
return nil
}
return errors.New("bool should be true")
}).
ValidateKey("null", func(value *Value) error {
return nil
}).
Field("empty").
Field("embed-object").
Field("array-in-object").
Field("array").
Field("empty-array").
Field("embed-empty-array").
Field("array-empty-obj").
Field("embed-empty-array").
Field("array-obj").
Walk()
dieIf(err)
var d demo
err = NewDecoder().Unmarshal(val, &d)
dieIf(err)
fmt.Println(d)
}
func dieIf(err error) {
if err != nil {
panic(err)
}
}