1//===- EndianStream.h - Stream ops with endian specific data ----*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file defines utilities for operating on streams that have endian
11// specific data.
12//
13//===----------------------------------------------------------------------===//
14
15#ifndef LLVM_SUPPORT_ENDIANSTREAM_H
16#define LLVM_SUPPORT_ENDIANSTREAM_H
17
18#include "llvm/ADT/ArrayRef.h"
19#include "llvm/Support/Endian.h"
20#include "llvm/Support/raw_ostream.h"
21
22namespace llvm {
23namespace support {
24
25namespace endian {
26/// Adapter to write values to a stream in a particular byte order.
27template <endianness endian> struct Writer {
28  raw_ostream &OS;
29  Writer(raw_ostream &OS) : OS(OS) {}
30  template <typename value_type> void write(ArrayRef<value_type> Vals) {
31    for (value_type V : Vals)
32      write(V);
33  }
34  template <typename value_type> void write(value_type Val) {
35    Val = byte_swap<value_type, endian>(Val);
36    OS.write((const char *)&Val, sizeof(value_type));
37  }
38};
39
40template <>
41template <>
42inline void Writer<little>::write<float>(float Val) {
43  write(FloatToBits(Val));
44}
45
46template <>
47template <>
48inline void Writer<little>::write<double>(double Val) {
49  write(DoubleToBits(Val));
50}
51
52template <>
53template <>
54inline void Writer<big>::write<float>(float Val) {
55  write(FloatToBits(Val));
56}
57
58template <>
59template <>
60inline void Writer<big>::write<double>(double Val) {
61  write(DoubleToBits(Val));
62}
63
64} // end namespace endian
65
66} // end namespace support
67} // end namespace llvm
68
69#endif
70