go/json-iterator
1
0
Fork 0
mirror of https://github.com/json-iterator/go.git synced 2025-04-23 11:37:32 +02:00
Code Issues Releases Activity

optimize true/false/null:

Browse Source
This commit is contained in:
Tao Wen 2017-01-22 19:28:14 +08:00
parent 1163c348f6
commit 9c2b1d24b3
1 changed files with 53 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

76
feature_stream.go
View File

@ -4,16 +4,6 @@ import (
"io"
)
var bytesNull []byte
var bytesTrue []byte
var bytesFalse []byte
func init() {
bytesNull = []byte("null")
bytesTrue = []byte("true")
bytesFalse = []byte("false")
}
type Stream struct {
out io.Writer
buf []byte
@ -68,29 +58,69 @@ func (b *Stream) Write(p []byte) (nn int, err error) {
// WriteByte writes a single byte.
func (b *Stream) writeByte(c byte) error {
func (b *Stream) writeByte(c byte) {
if b.Error != nil {
return b.Error
return
}
if b.Available() <= 0 && b.Flush() != nil {
return b.Error
return
}
b.buf[b.n] = c
b.n++
return nil
}
func (b *Stream) writeTwoBytes(c1 byte, c2 byte) error {
func (b *Stream) writeTwoBytes(c1 byte, c2 byte) {
if b.Error != nil {
return b.Error
return
}
if b.Available() <= 1 && b.Flush() != nil {
return b.Error
return
}
b.buf[b.n] = c1
b.buf[b.n + 1] = c2
b.n += 2
return nil
}
func (b *Stream) writeThreeBytes(c1 byte, c2 byte, c3 byte) {
if b.Error != nil {
return
}
if b.Available() <= 2 && b.Flush() != nil {
return
}
b.buf[b.n] = c1
b.buf[b.n + 1] = c2
b.buf[b.n + 2] = c3
b.n += 3
}
func (b *Stream) writeFourBytes(c1 byte, c2 byte, c3 byte, c4 byte) {
if b.Error != nil {
return
}
if b.Available() <= 3 && b.Flush() != nil {
return
}
b.buf[b.n] = c1
b.buf[b.n + 1] = c2
b.buf[b.n + 2] = c3
b.buf[b.n + 3] = c4
b.n += 4
}
func (b *Stream) writeFiveBytes(c1 byte, c2 byte, c3 byte, c4 byte, c5 byte) {
if b.Error != nil {
return
}
if b.Available() <= 3 && b.Flush() != nil {
return
}
b.buf[b.n] = c1
b.buf[b.n + 1] = c2
b.buf[b.n + 2] = c3
b.buf[b.n + 3] = c4
b.buf[b.n + 4] = c5
b.n += 5
}
// Flush writes any buffered data to the underlying io.Writer.
@ -195,22 +225,22 @@ func (stream *Stream) writeStringSlowPath(s string, i int, valLen int) {
}
func (stream *Stream) WriteNil() {
stream.Write(bytesNull)
stream.writeFourBytes('n', 'u', 'l', 'l')
}
func (stream *Stream) WriteTrue() {
stream.Write(bytesTrue)
stream.writeFourBytes('t', 'r', 'u', 'e')
}
func (stream *Stream) WriteFalse() {
stream.Write(bytesFalse)
stream.writeFiveBytes('f', 'a', 'l', 's', 'e')
}
func (stream *Stream) WriteBool(val bool) {
if val {
stream.Write(bytesTrue)
stream.WriteTrue()
} else {
stream.Write(bytesFalse)
stream.WriteFalse()
}
}