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demonstrate how to customize float encoding

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This commit is contained in:
Tao Wen 2017-05-11 08:00:50 +08:00
parent 1df353727b
commit 3f1fcaff87
2 changed files with 41 additions and 4 deletions
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8
feature_stream_float.go
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@ -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--
}
}

37
jsoniter_demo_test.go
View File

@ -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))
}