[*] refactor: 中间备份

conv.go

@@ -3,7 +3,6 @@ package jsonvalue
 import (
 	"bytes"
 	"fmt"
-	"log"
 	"reflect"
 	"strconv"
 )
@@ -20,41 +19,6 @@ func parseFloat(b []byte) (float64, error) {
 	return strconv.ParseFloat(unsafeBtoS(b), 64)
 }
 
-// reference: https://golang.org/src/encoding/json/decode.go, func unquote()
-func parseString(b []byte) (string, []byte, error) { // TODO:
-	firstQuote := bytes.Index(b, []byte{'"'})
-	lastQuote := bytes.LastIndex(b, []byte{'"'})
-	if firstQuote < 0 || firstQuote == lastQuote {
-		return "", nil, ErrIllegalString
-	}
-
-	b = b[firstQuote : lastQuote-firstQuote+1]
-
-	t, ok := unquoteBytes(b)
-	if !ok {
-		return "", nil, fmt.Errorf("invalid string '%s'", unsafeBtoS(b))
-	}
-	return unsafeBtoS(t), b, nil
-}
-
-func unquoteBytes(s []byte) (t []byte, ok bool) {
-	if len(s) < 2 || s[0] != '"' || s[len(s)-1] != '"' {
-		return
-	}
-	return parseStrText(s[1 : len(s)-1])
-}
-
-func parseStrText(s []byte) (t []byte, ok bool) {
-	it := &iter{b: s}
-	le, err := it.parseStrFromBytesBackward(0, len(it.b))
-	if err != nil {
-		log.Printf("it.parseStrFromBytesBackward error: %v", err)
-		return nil, false
-	}
-
-	return s[:le], true
-}
-
 func formatBool(b bool) string {
 	if b {
 		return "true"

jsonvalue.go

@@ -136,9 +136,9 @@ func (v *V) valueBytes() []byte {
 	return v.srcByte[v.srcOffset:v.srcEnd]
 }
 
-// UnmarshalString is equavilent to Unmarshal(unsafeBtoS(b)), but much more efficient.
+// UnmarshalString is equavilent to Unmarshal([]byte(b)), but much more efficient.
 //
-// UnmarshalString 等效于 Unmarshal(unsafeBtoS(b))，但效率更高。
+// UnmarshalString 等效于 Unmarshal([]byte(b))，但效率更高。
 func UnmarshalString(s string) (*V, error) {
 	// reference: https://stackoverflow.com/questions/41591097/slice-bounds-out-of-range-when-using-unsafe-pointer
 	// sh := (*reflect.StringHeader)(unsafe.Pointer(&s))

pprof_test/main.go

@@ -5,6 +5,7 @@ import (
 	"log"
 	"os"
 	"runtime/pprof"
+	"runtime/trace"
 	"time"
 
 	jsonvalue "github.com/Andrew-M-C/go.jsonvalue"
@@ -15,6 +16,7 @@ import (
 // go run .
 // go tool pprof -http=:6060 ./jsonvalue-unmarshal.profile
 // go tool pprof -http=:6061 ./jsoniter-get.profile
+// go tool trace jsonvalue-unmarshal-trace.profile
 
 const (
 	iteration = 200000
@@ -25,12 +27,29 @@ var (
 	printf        = log.Printf
 )
 
+func jsonvalueUnmarshalTraceTest() {
+	ft, err := os.OpenFile("jsonvalue-unmarshal-trace.profile", os.O_CREATE|os.O_RDWR|os.O_TRUNC, 0644)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer ft.Close()
+	trace.Start(ft)
+	defer trace.Stop()
+
+	_, err = jsonvalue.Unmarshal(unmarshalText)
+	if err != nil {
+		printf("unmarshal error: %v", err)
+		return
+	}
+
+	printf("jsonvalue unmarshal trace done")
+}
+
 func jsonvalueUnmarshalTest() {
 	f, err := os.OpenFile("jsonvalue-unmarshal.profile", os.O_CREATE|os.O_RDWR|os.O_TRUNC, 0644)
 	if err != nil {
 		log.Fatal(err)
 	}
-
 	defer f.Close()
 	pprof.StartCPUProfile(f)
 	defer pprof.StopCPUProfile()
@@ -43,7 +62,6 @@ func jsonvalueUnmarshalTest() {
 		}
 	}
 
-	printf("jsonvalue unmarshal done")
 }
 
 func jsonvalueMarshalTest() {
@@ -250,6 +268,8 @@ func main() {
 		printf("done, elapsed %v", time.Since(start))
 	}
 
+	run(jsonvalueUnmarshalTraceTest)
+
 	run(jsonvalueUnmarshalTest)
 	run(jsonvalueMarshalTest)