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Support: Functions for writing endian specific data to streams.

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This adds a new header, EndianStream.h, which supplies an adaptor for
writing endian specific data to a raw_ostream.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205032 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Justin Bogner 2014-03-28 19:14:43 +00:00
parent a53735bcf1
commit a655710ce0
1 changed files with 39 additions and 0 deletions
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include/llvm/Support/EndianStream.h Normal file
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//===- EndianStream.h - Stream ops with endian specific data ----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines utilities for operating on streams that have endian
// specific data.
//
//===----------------------------------------------------------------------===//
#ifndef _LLVM_SUPPORT_ENDIAN_STREAM_H_
#define _LLVM_SUPPORT_ENDIAN_STREAM_H_
#include <llvm/Support/Endian.h>
#include <llvm/Support/raw_ostream.h>
namespace llvm {
namespace support {
namespace endian {
/// Adapter to write values to a stream in a particular byte order.
template <endianness endian> struct Writer {
raw_ostream &OS;
Writer(raw_ostream &OS) : OS(OS) {}
template <typename value_type> void write(value_type Val) {
Val = byte_swap<value_type, endian>(Val);
OS.write((const char *)&Val, sizeof(value_type));
}
};
} // end namespace endian
} // end namespace support
} // end namespace llvm
#endif // _LLVM_SUPPORT_ENDIAN_STREAM_H_