github.com/gnolang/gno@v0.0.0-20240520182011-228e9d0192ce/tm2/pkg/amino/example_test.go (about)

     1  // Copyright 2017 Tendermint. All Rights Reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package amino_test
    16  
    17  import (
    18  	"fmt"
    19  	"reflect"
    20  
    21  	amino "github.com/gnolang/gno/tm2/pkg/amino"
    22  )
    23  
    24  func Example() {
    25  	type Message interface{}
    26  
    27  	type bcMessage struct {
    28  		Message string
    29  		Height  int
    30  	}
    31  
    32  	type bcResponse struct {
    33  		Status  int
    34  		Message string
    35  	}
    36  
    37  	type bcStatus struct {
    38  		Peers int
    39  	}
    40  
    41  	// amino.RegisterPackage registers globally.
    42  	amino.RegisterPackage(
    43  		amino.NewPackage(
    44  			reflect.TypeOf(bcMessage{}).PkgPath(),
    45  			"amino_test",
    46  			amino.GetCallersDirname(),
    47  		).
    48  			WithTypes(&bcMessage{}, &bcResponse{}, &bcStatus{}),
    49  	)
    50  
    51  	bm := &bcMessage{Message: "ABC", Height: 100}
    52  	msg := bm
    53  
    54  	var bz []byte // the marshalled bytes.
    55  	var err error
    56  	bz, err = amino.MarshalAnySized(msg)
    57  	fmt.Printf("Encoded: %X (err: %v)\n", bz, err)
    58  
    59  	var msg2 Message
    60  	err = amino.UnmarshalSized(bz, &msg2)
    61  	fmt.Printf("Decoded: %v (err: %v)\n", msg2, err)
    62  	bm2 := msg2.(*bcMessage)
    63  	fmt.Printf("Decoded successfully: %v\n", *bm == *bm2)
    64  
    65  	// Output:
    66  	// Encoded: 210A152F616D696E6F5F746573742E62634D65737361676512080A0341424310C801 (err: <nil>)
    67  	// Decoded: &{ABC 100} (err: <nil>)
    68  	// Decoded successfully: true
    69  }