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📁 ..
📄 bench_test.go(8.57 KB)
📄 decode.go(35.29 KB)
📄 decode_test.go(61.95 KB)
📄 encode.go(38.39 KB)
📄 encode_test.go(28.27 KB)
📄 example_marshaling_test.go(1.23 KB)
📄 example_test.go(6.06 KB)
📄 example_text_marshaling_test.go(1.23 KB)
📄 fold.go(3.39 KB)
📄 fold_test.go(2.89 KB)
📄 fuzz.go(798 B)
📄 indent.go(3.4 KB)
📄 number_test.go(2.2 KB)
📄 scanner.go(16.03 KB)
📄 scanner_test.go(6.16 KB)
📄 stream.go(12.92 KB)
📄 stream_test.go(11.18 KB)
📄 tables.go(4.16 KB)
📄 tagkey_test.go(2.67 KB)
📄 tags.go(1.05 KB)
📄 tags_test.go(565 B)
📁 testdata

Editing: example_marshaling_test.go

// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package json_test

import (
	"encoding/json"
	"fmt"
	"log"
	"strings"
)

type Animal int

const (
	Unknown Animal = iota
	Gopher
	Zebra
)

func (a *Animal) UnmarshalJSON(b []byte) error {
	var s string
	if err := json.Unmarshal(b, &s); err != nil {
		return err
	}
	switch strings.ToLower(s) {
	default:
		*a = Unknown
	case "gopher":
		*a = Gopher
	case "zebra":
		*a = Zebra
	}

return nil
}

func (a Animal) MarshalJSON() ([]byte, error) {
	var s string
	switch a {
	default:
		s = "unknown"
	case Gopher:
		s = "gopher"
	case Zebra:
		s = "zebra"
	}

return json.Marshal(s)
}

func Example_customMarshalJSON() {
	blob := `["gopher","armadillo","zebra","unknown","gopher","bee","gopher","zebra"]`
	var zoo []Animal
	if err := json.Unmarshal([]byte(blob), &zoo); err != nil {
		log.Fatal(err)
	}

census := make(map[Animal]int)
	for _, animal := range zoo {
		census[animal] += 1
	}

fmt.Printf("Zoo Census:\n* Gophers: %d\n* Zebras:  %d\n* Unknown: %d\n",
		census[Gopher], census[Zebra], census[Unknown])

// Output:
	// Zoo Census:
	// * Gophers: 3
	// * Zebras:  2
	// * Unknown: 3
}

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Editing: example_marshaling_test.go

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