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package jsoniter
import (
"encoding/json"
"reflect"
"testing"
)
type Level1 struct {
Hello []Level2
}
type Level2 struct {
World string
}
func Test_nested(t *testing.T) {
iter := ParseString(`{"hello": [{"world": "value1"}, {"world": "value2"}]}`)
l1 := Level1{}
for l1Field := iter.ReadObject(); l1Field != ""; l1Field = iter.ReadObject() {
switch l1Field {
case "hello":
l2Array := []Level2{}
for iter.ReadArray() {
l2 := Level2{}
for l2Field := iter.ReadObject(); l2Field != ""; l2Field = iter.ReadObject() {
switch l2Field {
case "world":
l2.World = iter.ReadString()
default:
iter.reportError("bind l2", "unexpected field: "+l2Field)
}
}
l2Array = append(l2Array, l2)
}
l1.Hello = l2Array
default:
iter.reportError("bind l1", "unexpected field: "+l1Field)
}
}
if !reflect.DeepEqual(l1, Level1{
Hello: []Level2{
{World: "value1"},
{World: "value2"},
},
}) {
t.Fatal(l1)
}
}
func Benchmark_jsoniter_nested(b *testing.B) {
for n := 0; n < b.N; n++ {
iter := ParseString(`{"hello": [{"world": "value1"}, {"world": "value2"}]}`)
l1 := Level1{}
for l1Field := iter.ReadObject(); l1Field != ""; l1Field = iter.ReadObject() {
switch l1Field {
case "hello":
l1.Hello = readLevel1Hello(iter)
default:
iter.Skip()
}
}
}
}
func readLevel1Hello(iter *Iterator) []Level2 {
l2Array := make([]Level2, 0, 2)
for iter.ReadArray() {
l2 := Level2{}
for l2Field := iter.ReadObject(); l2Field != ""; l2Field = iter.ReadObject() {
switch l2Field {
case "world":
l2.World = iter.ReadString()
default:
iter.Skip()
}
}
l2Array = append(l2Array, l2)
}
return l2Array
}
func Benchmark_json_nested(b *testing.B) {
for n := 0; n < b.N; n++ {
l1 := Level1{}
json.Unmarshal([]byte(`{"hello": [{"world": "value1"}, {"world": "value2"}]}`), &l1)
}
}