demonstrate how to customize float encoding

feature_stream_float.go

@@ -34,9 +34,9 @@ func (stream *Stream) WriteFloat32(val float32) {
 	for p := precision - 1; p > 0 && fval < POW10[p]; p-- {
 		stream.writeByte('0')
 	}
-	stream.WriteUint64(fval);
+	stream.WriteUint64(fval)
 	for stream.buf[stream.n - 1] == '0' {
-		stream.n--;
+		stream.n--
 	}
 }
 
@@ -64,8 +64,8 @@ func (stream *Stream) WriteFloat64(val float64) {
 	for p := precision - 1; p > 0 && fval < POW10[p]; p-- {
 		stream.writeByte('0')
 	}
-	stream.WriteUint64(fval);
+	stream.WriteUint64(fval)
 	for stream.buf[stream.n - 1] == '0' {
-		stream.n--;
+		stream.n--
 	}
 }

jsoniter_demo_test.go

@@ -4,6 +4,8 @@ import (
 	"fmt"
 	"testing"
 	"github.com/json-iterator/go/require"
+	"unsafe"
+	"strconv"
 )
 
 func Test_bind_api_demo(t *testing.T) {
@@ -22,3 +24,38 @@ func Test_iterator_api_demo(t *testing.T) {
 	}
 	fmt.Println(total)
 }
+
+type DocumentMatch struct {
+	Index string   `json:"index,omitempty"`
+	ID    string   `json:"id"`
+	Score float64  `json:"score"`
+	Sort  []string `json:"sort,omitempty"`
+}
+
+type DocumentMatchCollection []*DocumentMatch
+
+type SearchResult struct {
+	Hits DocumentMatchCollection `json:"hits"`
+}
+
+func Test2(t *testing.T) {
+	RegisterTypeEncoder("float64", func(ptr unsafe.Pointer, stream *Stream) {
+		t := *((*float64)(ptr))
+		stream.WriteRaw(strconv.FormatFloat(t, 'E', -1, 64))
+	})
+	hits := []byte(`{"hits":[{"index":"geo","id":"firehouse_grill_brewery","score":3.584608106366055e-07,
+							"sort":[" \u0001@\t\u0007\u0013;a\u001b}W"]},
+							{"index":"geo","id":"jack_s_brewing","score":2.3332790568885077e-07,
+							"sort":[" \u0001@\u0013{w?.\"0\u0010"]},
+							{"index":"geo","id":"brewpub_on_the_green","score":2.3332790568885077e-07,
+							"sort":[" \u0001@\u0014\u0017+\u00137QZG"]}]}`)
+	var h SearchResult
+	err := Unmarshal(hits, &h)
+	fmt.Printf("SR %+v \n", h.Hits[0])
+	b, err := Marshal(h.Hits[0])
+	if err != nil {
+		fmt.Printf("error marshalling search res: %v", err)
+		//return
+	}
+	fmt.Printf("SR %s \n", string(b))
+}