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//
// Copyright (c) 2011-2019 Canonical Ltd
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package yaml_test

import (
	"fmt"
	"log"

	"gopkg.in/yaml.v3"
)

// An example showing how to unmarshal embedded
// structs from YAML.

type StructA struct {
	A string `yaml:"a"`
}

type StructB struct {
	// Embedded structs are not treated as embedded in YAML by default. To do that,
	// add the ",inline" annotation below
	StructA `yaml:",inline"`
	B       string `yaml:"b"`
}

var data = `
a: a string from struct A
b: a string from struct B
`

func ExampleUnmarshal_embedded() {
	var b StructB

	err := yaml.Unmarshal([]byte(data), &b)
	if err != nil {
		log.Fatalf("cannot unmarshal data: %v", err)
	}
	fmt.Println(b.A)
	fmt.Println(b.B)
	// Output:
	// a string from struct A
	// a string from struct B
}