1//===- EndianStream.h - Stream ops with endian specific data ----*- C++ -*-===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8// 9// This file defines utilities for operating on streams that have endian 10// specific data. 11// 12//===----------------------------------------------------------------------===// 13 14#ifndef LLVM_SUPPORT_ENDIANSTREAM_H 15#define LLVM_SUPPORT_ENDIANSTREAM_H 16 17#include "llvm/ADT/ArrayRef.h" 18#include "llvm/Support/Endian.h" 19#include "llvm/Support/raw_ostream.h" 20 21namespace llvm { 22namespace support { 23 24namespace endian { 25 26template <typename value_type> 27inline void write(raw_ostream &os, value_type value, endianness endian) { 28 value = byte_swap<value_type>(value, endian); 29 os.write((const char *)&value, sizeof(value_type)); 30} 31 32template <> 33inline void write<float>(raw_ostream &os, float value, endianness endian) { 34 write(os, FloatToBits(value), endian); 35} 36 37template <> 38inline void write<double>(raw_ostream &os, double value, 39 endianness endian) { 40 write(os, DoubleToBits(value), endian); 41} 42 43template <typename value_type> 44inline void write(raw_ostream &os, ArrayRef<value_type> vals, 45 endianness endian) { 46 for (value_type v : vals) 47 write(os, v, endian); 48} 49 50/// Adapter to write values to a stream in a particular byte order. 51struct Writer { 52 raw_ostream &OS; 53 endianness Endian; 54 Writer(raw_ostream &OS, endianness Endian) : OS(OS), Endian(Endian) {} 55 template <typename value_type> void write(ArrayRef<value_type> Val) { 56 endian::write(OS, Val, Endian); 57 } 58 template <typename value_type> void write(value_type Val) { 59 endian::write(OS, Val, Endian); 60 } 61}; 62 63} // end namespace endian 64 65} // end namespace support 66} // end namespace llvm 67 68#endif 69