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| Rev | Author | Line No. | Line |
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| 14 | pmbaty | 1 | //===- EndianStream.h - Stream ops with endian specific data ----*- C++ -*-===// |
| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // This file defines utilities for operating on streams that have endian |
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| 10 | // specific data. |
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| 11 | // |
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| 12 | //===----------------------------------------------------------------------===// |
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| 13 | |||
| 14 | #ifndef LLVM_SUPPORT_ENDIANSTREAM_H |
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| 15 | #define LLVM_SUPPORT_ENDIANSTREAM_H |
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| 16 | |||
| 17 | #include "llvm/ADT/ArrayRef.h" |
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| 18 | #include "llvm/Support/Endian.h" |
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| 19 | #include "llvm/Support/MathExtras.h" |
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| 20 | #include "llvm/Support/raw_ostream.h" |
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| 21 | |||
| 22 | namespace llvm { |
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| 23 | namespace support { |
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| 24 | |||
| 25 | namespace endian { |
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| 26 | |||
| 27 | template <typename value_type> |
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| 28 | inline void write(raw_ostream &os, value_type value, endianness endian) { |
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| 29 | value = byte_swap<value_type>(value, endian); |
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| 30 | os.write((const char *)&value, sizeof(value_type)); |
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| 31 | } |
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| 32 | |||
| 33 | template <> |
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| 34 | inline void write<float>(raw_ostream &os, float value, endianness endian) { |
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| 35 | write(os, FloatToBits(value), endian); |
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| 36 | } |
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| 37 | |||
| 38 | template <> |
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| 39 | inline void write<double>(raw_ostream &os, double value, |
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| 40 | endianness endian) { |
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| 41 | write(os, DoubleToBits(value), endian); |
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| 42 | } |
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| 43 | |||
| 44 | template <typename value_type> |
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| 45 | inline void write(raw_ostream &os, ArrayRef<value_type> vals, |
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| 46 | endianness endian) { |
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| 47 | for (value_type v : vals) |
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| 48 | write(os, v, endian); |
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| 49 | } |
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| 50 | |||
| 51 | /// Adapter to write values to a stream in a particular byte order. |
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| 52 | struct Writer { |
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| 53 | raw_ostream &OS; |
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| 54 | endianness Endian; |
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| 55 | Writer(raw_ostream &OS, endianness Endian) : OS(OS), Endian(Endian) {} |
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| 56 | template <typename value_type> void write(ArrayRef<value_type> Val) { |
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| 57 | endian::write(OS, Val, Endian); |
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| 58 | } |
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| 59 | template <typename value_type> void write(value_type Val) { |
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| 60 | endian::write(OS, Val, Endian); |
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| 61 | } |
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| 62 | }; |
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| 63 | |||
| 64 | } // end namespace endian |
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| 65 | |||
| 66 | } // end namespace support |
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| 67 | } // end namespace llvm |
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| 68 | |||
| 69 | #endif |