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[update] read string memory allocation optimization #650

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[update] read string memory allocation optimization #650

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8 changes: 7 additions & 1 deletion iter_str.go
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Original file line number Diff line number Diff line change
Expand Up @@ -3,16 +3,22 @@ package jsoniter
import (
"fmt"
"unicode/utf16"
"unsafe"
)

// bytesToString convert []byte to string
func bytesToString(b []byte) string {
return *(*string)(unsafe.Pointer(&b))
}

// ReadString read string from iterator
func (iter *Iterator) ReadString() (ret string) {
c := iter.nextToken()
if c == '"' {
for i := iter.head; i < iter.tail; i++ {
c := iter.buf[i]
if c == '"' {
ret = string(iter.buf[iter.head:i])
ret = bytesToString(iter.buf[iter.head:i])
iter.head = i + 1
return ret
} else if c == '\\' {
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