#34 add decoder adapter

feature_adapter.go

@@ -99,3 +99,17 @@ func MarshalToString(v interface{}) (string, error) {
 	}
 	return string(buf), nil
 }
+
+func NewDecoder(reader io.Reader) *AdaptedDecoder {
+	iter := Parse(reader, 512)
+	return &AdaptedDecoder{iter}
+}
+
+type AdaptedDecoder struct {
+	iter *Iterator
+}
+
+func (adapter *AdaptedDecoder) Decode(obj interface{}) error {
+	adapter.iter.ReadVal(obj)
+	return adapter.iter.Error
+}

jsoniter_adapter_test.go

@@ -0,0 +1,19 @@
+package jsoniter
+
+import (
+	"testing"
+	"github.com/json-iterator/go/require"
+	"encoding/json"
+	"bytes"
+)
+
+func Test_new_decoder(t *testing.T) {
+	should := require.New(t)
+	decoder1 := json.NewDecoder(bytes.NewBufferString(`[1]`))
+	decoder2 := NewDecoder(bytes.NewBufferString(`[1]`))
+	arr1 := []int{}
+	should.Nil(decoder1.Decode(&arr1))
+	should.Equal([]int{1}, arr1)
+	arr2 := []int{}
+	should.Nil(decoder2.Decode(&arr2))
+}