github.com/cloudwego/kitex@v0.9.0/pkg/utils/byte2str.go (about)

     1  /*
     2   * Copyright 2021 CloudWeGo Authors
     3   *
     4   * Licensed under the Apache License, Version 2.0 (the "License");
     5   * you may not use this file except in compliance with the License.
     6   * You may obtain a copy of the License at
     7   *
     8   *     http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  
    17  package utils
    18  
    19  import (
    20  	"reflect"
    21  	"unsafe"
    22  )
    23  
    24  // SliceByteToString converts []byte to string without copy.
    25  // DO NOT USE unless you know what you're doing.
    26  func SliceByteToString(b []byte) string {
    27  	return *(*string)(unsafe.Pointer(&b))
    28  }
    29  
    30  // StringToSliceByte converts string to []byte without copy.
    31  // DO NOT USE unless you know what you're doing.
    32  func StringToSliceByte(s string) []byte {
    33  	p := unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&s)).Data)
    34  	var b []byte
    35  	hdr := (*reflect.SliceHeader)(unsafe.Pointer(&b))
    36  	hdr.Data = uintptr(p)
    37  	hdr.Cap = len(s)
    38  	hdr.Len = len(s)
    39  	return b
    40  }